KOSUN

标签： Solid control equipment

  • High-efficiency solid-liquid separation technology and application

    In industrial production and environmental governance, solid-liquid separation equipment is an important piece of equipment for enhancing efficiency, reducing costs and achieving green development. Solid-liquid separation technology is widely applied in fields such as oil drilling, municipal sewage treatment, mining, chemical engineering, and food processing, and is gradually becoming a "must-have equipment" on enterprise production lines.

     


    The core working principle of solid-liquid separation equipment is based on the mechanical characteristics of multiphase fluids. Through physical actions such as gravitational sedimentation, centrifugal force field, membrane separation, and medium screening, it achieves precise separation of solid-liquid two-phase systems. The essence of its technology lies in taking advantage of the differences in physical properties such as density, particle size and interfacial tension between solid particles and liquid media, and enhancing the separation efficiency through an external force field. Common types of equipment include centrifuges, vibrating screens, filter presses and cyclones, etc. Among them, the centrifuge utilizes the centrifugal acceleration generated by the high-speed rotation of the drum (which can reach hundreds to thousands of times the gravitational acceleration) to achieve rapid sedimentation separation by taking advantage of the density difference between the solid and liquid phases, and is particularly suitable for the efficient treatment of fine particle suspensions. The vibrating screen uses the periodic mechanical vibration generated by the excitation device to cause the material to form a throwing motion on the screen surface. The liquid and fine particles smaller than the screen holes pass through the screen, while the coarse particles larger than the screen holes are retained, achieving classification and separation. The filter press is based on the principle of deep filtration driven by pressure. It uses filter cloth as the filtering medium. Under the high-pressure squeezing action of the plate and frame or diaphragm, the liquid passes through the pores of the filter cloth to form filtrate, and the solid particles are retained to form a filter cake. It is particularly suitable for the deep dewatering of high-concentration suspensions. The cyclone utilizes the strong swirling field generated when the fluid enters tangentially. Under the combined action of centrifugal force and gravity, solid particles with higher density move towards the wall of the device and are discharged with the underflow, while liquids with lower density rise along the central axis and are discharged from the overflow port, achieving continuous solid-liquid separation operation. These devices, through the optimized matching and combined use of working condition parameters, can significantly enhance separation efficiency and ensure the stable operation of industrial production processes.


     

    The application fields of solid-liquid separation equipment are very extensive. In oil drilling, it can separate drill cuttings in the drilling fluid circulation system and maintain the performance of the drilling fluid. When treating municipal sewage, it can be used for sludge dewatering and water quality purification to ensure compliance with discharge standards. In the field of mining and metallurgy, it helps with pulp concentration and tailings treatment to achieve resource recovery. In the chemical and pharmaceutical industries, it can separate by-products and improve the purity of finished products. In the production of food and beverages, it can be used in processes such as juice clarification, starch extraction, and brewing filtration. From environmental governance to resource utilization, solid-liquid separation equipment almost covers all industrial scenarios related to liquids.
     
    When purchasing solid-liquid separation equipment, enterprises should focus on multiple key factors, such as processing capacity, and match the equipment model according to the production scale. Particle size: Different equipment is suitable for different ranges of solid particles. Degree of automation, whether continuous operation and remote monitoring are required; Wear-resistant and corrosion-resistant materials to adapt to acidic, alkaline or high-wear working conditions; There is also after-sales service. Does the manufacturer provide installation, commissioning, training and long-term maintenance? Choosing a suitable solid-liquid separation equipment manufacturer can help enterprises save on later operating costs and improve overall benefits. And such equipment itself also has many advantages. It not only separates efficiently, but also has strong processing capacity and stable efficiency. It can also save energy and protect the environment, reduce the discharge of wastewater and solid waste, and meet the requirements of green development. At the same time, it is easy to operate, highly automated, and can reduce reliance on manual labor.


     

     

  • How to choose a drilling fluid centrifuge in oil drilling engineering?

    Drilling fluid centrifuges are indispensable equipment in oil drilling engineering. Their main function is to separate solid particles in drilling fluid to ensure the performance and quality of the drilling fluid.
    Selecting the appropriate drilling fluid centrifuge is of great significance in improving drilling efficiency, reducing drilling costs, and protecting the environment.

     

    I. Understand the basic types of drilling fluid centrifuges
    Drilling fluid centrifuges are mainly classified into the following types:
    Sedimentation centrifuge: It uses centrifugal force to make solid particles settle and separate in a high-speed rotating drum.
    Separation centrifuge: Through high-speed rotation, it separates liquids and solid particles of different densities.
    Filter centrifuge: Separates solids and liquids through a filter medium.
    Understanding different types of centrifuges helps to select the appropriate equipment based on specific drilling conditions.
     
    Second, consider the properties of the drilling fluid
    The properties of drilling fluid are crucial to the selection of centrifuges. The following are several key drilling fluid parameters:
    Density: High-density drilling fluid requires a higher centrifugal force to effectively separate solid particles.
    Viscosity: High-viscosity drilling fluids require stronger centrifuges for processing to prevent clogging.
    Solid content: Drilling fluids with high solid content require more efficient separation equipment.
    Iii. Determine the processing capacity
    Processing capacity is one of the factors to be considered when choosing a centrifuge. Processing capacity mainly includes two aspects:
    Processing capacity: The volume of drilling fluid that a centrifuge can process within a unit of time.
    Separation efficiency: The proportion of solid particles that a centrifuge can separate from drilling fluid.
    Generally speaking, the higher the processing capacity, the larger the size and power requirements of the centrifuge will be accordingly increased.

    I. Understand the basic types of drilling fluid centrifuges

    Drilling fluid centrifuges are mainly classified into the following types:
    Sedimentation centrifuge: It uses centrifugal force to make solid particles settle and separate in a high-speed rotating drum.
    Separation centrifuge: Through high-speed rotation, it separates liquids and solid particles of different densities.
    Filter centrifuge: Separates solids and liquids through a filter medium.
    Understanding different types of centrifuges helps to select the appropriate equipment based on specific drilling conditions.
     
    Second, consider the properties of the drilling fluid
    The properties of drilling fluid are crucial to the selection of centrifuges. The following are several key drilling fluid parameters:
    Density: High-density drilling fluid requires a higher centrifugal force to effectively separate solid particles.
    Viscosity: High-viscosity drilling fluids require stronger centrifuges for processing to prevent clogging.
    Solid content: Drilling fluids with high solid content require more efficient separation equipment.
    Iii. Determine the processing capacity
    Processing capacity is one of the factors to be considered when choosing a centrifuge. Processing capacity mainly includes two aspects:
    Processing capacity: The volume of drilling fluid that a centrifuge can process within a unit of time.
    Separation efficiency: The proportion of solid particles that a centrifuge can separate from drilling fluid.
    Generally speaking, the higher the processing capacity, the larger the size and power requirements of the centrifuge will be accordingly increased.

     

     

  • Another breakthrough in the Central Asian market! Kosun has started the delivery of 110 mud agitators and sand pumps

    Recently, Xi 'an KOSUN has completed the loading of the first batch of 45 high-performance mud agitators and 20 sand pumps custom-produced for an important partner in Central Asia – Uzbekistan.
     This move marks that the order of over 110 pieces of equipment signed by both parties has entered the substantive delivery stage.
    It fully demonstrated the competitive strength of Xi 'an KOSUN in the international oil and gas equipment market.

     


     

     

    To ensure that the equipment fully meets its strict project standards, the Uzbekistan client specially dispatched a professional engineer team to the Xi 'an KOSUN production base to conduct a comprehensive and detailed pre-shipment acceptance of the first batch of mud agitators and sand pumps to be dispatched. Customer representatives went deep into the workshop and conducted a detailed inspection of the key manufacturing processes, material quality, core performance parameters and overall appearance quality of the equipment. After rigorous testing and evaluation, the customer highly praised Kosun Company's advanced production technology, excellent product quality and strict quality control system, and successfully signed the acceptance document.
     

         

     

    In complex engineering fields involving fluid circulation such as oil drilling, geological exploration, and underground continuous wall construction, the on-site application of mud agitators plays an irreplaceable and crucial role. Its core mission lies in ensuring the stable performance of the circulating medium, especially the drilling fluid, thereby laying the foundation for the smoothness and safety of the entire operation process. The sand pump can efficiently and stably transfer the slurry containing highly abrasive solids, directly affecting the efficiency of the entire solid control process and the service life of the equipment.
     


     

    Xi 'an KOSUN always prioritizes customer satisfaction and product reliability. From precise design, strict material selection to lean manufacturing, every link implements a strict quality control process to ensure that every piece of equipment delivered can operate stably and efficiently at the customer's site and stand the test of time and complex working conditions.

     

            

     

    At present, the first batch of delivered equipment has embarked on its journey to Uzbekistan. Kosun is efficiently organizing the production of the remaining equipment to ensure the strict completion of subsequent
     order deliveries as planned and fully support the smooth progress of the customer's project construction.
    ​This cooperation has further consolidated Kosun Company's position in the Central Asian market and laid a solid foundation for deepening broader cooperation between the two sides in the future.

     

    Xi 'an KOSUN, as an industry benchmark in the fields of oil and gas equipment and environmental governance, has been dedicated to technological innovation and quality improvement for 34 years.
    The company now holds 53 international patent technologies and has continuously obtained global authoritative certifications such as the US API, the EU CE, and the Russian GOST.
    With outstanding product performance and a complete service system, Our business has covered over 70 countries and regions around the world.
    We have long been providing professional solutions for international energy giants and have established stable strategic cooperative relationships in key markets such as Central Asia, Russia and the Middle East.
    This series of achievements fully validates the outstanding quality and market recognition of Kosun products.

  • The multi-field application of drilling fluid desanders

     
    As a key unit of the mud purification system, the drilling fluid desander plays a cornerstone role in multiple industrial scenarios with its highly efficient solid particle separation technology.
    It utilizes the principle of centrifugal force field to precisely remove sandy particles from drilling fluid that damage system performance, ensuring the reliable operation of core equipment and promoting the industrial model of resource recycling. The following are several application scenarios of drilling fluid desanders:
     
    I. Oil Drilling: A dual test of performance and weather resistance
    1. Onshore deep Wells: As the well depth increases, the composition of cuttings carried by the drilling fluid becomes increasingly complex and variable.
    The desander needs to continuously deal with the challenges of mixed solid phases such as sandstone and mudstone. Its unique conical separation structure can generate a stable high-speed centrifugal field, effectively sort particles according to density gradients, significantly reduce the abrasive damage of sand particles to core components such as drilling pumps, and extend the service life of equipment.
    2. Offshore platforms: The harsh salt spray and high-humidity environment impose higher requirements on the corrosion resistance of equipment.
    The core components of the desander are usually made of corrosion-resistant alloy materials such as duplex stainless steel to ensure long-term high-precision separation capabilities under harsh Marine conditions.

     

     

    II. Geological Exploration: Adaptive Evolution under Extreme Working Conditions
    1. Complex strata: In the face of sudden changes in the strata encountered during drilling (such as sudden gushing gravel or high-viscosity soil layers),
    which cause a sharp increase in the solid concentration of the drilling fluid, the intelligent feed control system of the desander equipment can respond quickly and dynamically adjust the processing rate to ensure stable separation efficiency.
    2. Extreme environments: When operating in permafrost areas or high-altitude cold regions, the equipment is equipped with an insulation system,
    effectively preventing a sharp increase in the viscosity of drilling fluid at low temperatures and ensuring that the sand separation process is not disturbed by drastic temperature fluctuations. This highly adaptable design enables it to work reliably in harsh environments such as plateaus and deserts, providing pure mud media for geological information acquisition.
    III. Mining: The Synergy of Resource Sorting and Recycling
    1. Metal mine drilling: Drilling fluids are often mixed with valuable mineral micro-powders.
    The desander needs to be precisely controlled to distinguish the target mineral particles from the useless waste sand and avoid economic losses. Its modularly designed density adjustment unit can be flexibly configured according to the characteristics of minerals, maximizing resource recovery while protecting the drilling tools.
    2. Coal mine engineering: The desander and the coal slime treatment system work in coordination. The separated fine sand is used as underground filling material, while the coal slime is recycled as fuel, forming a closed-loop chain of "drilling – separation – reuse", significantly reducing the environmental footprint of mine operations.

     

    IV. Municipal Infrastructure: The Integration of Miniaturization and Green Construction
    1. Urban exploration: In small-scale drilling scenarios such as subway exploration or pipeline detection, portable desanders have emerged. Its highly integrated skid-mounted design is suitable for narrow Spaces and can be flexibly moved with the drilling rig. The purified slurry can be directly reused to prepare new slurry, significantly reducing the on-site discharge of waste liquid.
    2. Pile foundation construction: The desander and the slurry circulation pool work in tandem to efficiently remove sand particles and impurities mixed in during the concrete pouring process, ensuring the stable performance of the wall protection slurry and guaranteeing the formation quality and integrity of the pile foundation structure.
    In such applications, the desander not only solves the solid control problem but also strongly supports the green and civilized construction of the city by achieving zero discharge of slurry.
    The diverse application demands of various industries are constantly driving the technology of drilling fluid desanders to upgrade in the directions of intelligence,
    specialization and environmental friendliness. From special models that can withstand extreme environments to customized equipment that meets ultra-fine sorting requirements,
    its development trajectory has always closely followed the pain points of the industry, becoming a precise link in modern engineering that balances production efficiency and ecological responsibility.

     

  • Drilling waste treatment: Reducing costs and increasing efficiency, creating a New Era of green drilling!

     
    Amid the roar of oilfield development, drilling operations are advancing efficiently. However, the drilling waste that comes along with it has become a persistent problem plaguing the industry's development – the traditional disposal methods are costly, environmental protection pressure follows closely, and the waste of resources is truly regrettable. How to break the deadlock? The drilling waste treatment technology developed by Xi 'an KOSUN offers you a one-stop green solution!

     

     

    The first step: Reuse and "cut off the flow" from the source
    In traditional drilling, the landing of mud is the "starting point" of pollution – mud mixed with heavy metals and petroleum substances seeps into the soil and is difficult to degrade naturally for 30 years.
    The solid control equipment combined with the mud non-landing technology enables the mud to circulate in a "closed loop" within the drilling system.
     
    Step 2: Reduction treatment + recycling, turning "waste" into "treasure"
    During the drilling process, barite (a key raw material for drilling mud) is quite expensive. If it is lost along with the waste, it is equivalent to "pouring money into the mud".
    The barite recovery technology of this system can efficiently extract barite from waste and reuse it for slurry preparation.
     
    Step 3: Emission safety net, Zero risk for Compliance
    Even after multiple layers of recycling, there is still a small amount of waste that needs to be discharged. The solidification,
    biodegradation and thermal desorption technologies in the system make the emissions "harmless".
    The working principle of the drilling waste treatment system is based on the comprehensive application of various technical means such as physical, chemical and biological methods. The uniformity of materials is improved through pretreatment. The effective separation of oil, water and residue is achieved by using solid-liquid separation technology. Then, through the oil recovery and wastewater treatment system, the recycling of oil and the standard treatment of wastewater are respectively realized. The waste residue is treated harmlessly to ensure the environmental friendliness of the entire treatment process.
     
    From drill cuttings recovery, solid-liquid separation to drying and volume reduction, and resource reuse, the processing system is modularly designed and flexibly combined to adapt to various working conditions and processing requirements. It can be applied to onshore drilling platforms and shale gas Wells. Offshore drilling platform Projects such as co-processing of waste from petrochemical enterprises. The application of the drilling waste treatment system has effectively reduced environmental pollution during the oilfield development process and improved the utilization efficiency of resources. The drilling waste treatment system, as an important environmental protection equipment in the field of petroleum exploration and development, its research and application are of great significance for promoting the sustainable development of the petroleum industry. In the future, with the continuous advancement of technology and increasingly strict environmental protection requirements, this field will embrace an even broader development prospect.

  • What factors affect the performance of the horizontal screw centrifuge?

     
    The horizontal screw centrifuge mainly consists of a drum, a screw, a differential system, a liquid level baffle, a drive system and a control system, etc. It is a dedicated solid-liquid separation equipment designed in accordance with the characteristics of petroleum drilling fluid. It can complete various processes such as feeding, centrifugal sedimentation and unloading at full speed. It is mainly used for recovering barite, removing fine solids, reducing the solid content of drilling fluid, controlling the density and viscosity of drilling fluid, ensuring the performance of drilling fluid and playing an important role in rapid drilling. The LW series centrifuge separates drilling suspensions based on the principle of centrifugal sedimentation. The suspension enters the drum through the liquid outlet hole in the screw conveyor via the feed pipe. Under the action of centrifugal force, solid particles are pushed to the inner wall of the drum and discharged from the small end of the drum through the blades on the screw conveyor. The liquid phase overflows through the overflow hole at the large end of the drum. This cycle is repeated continuously to achieve the purpose of continuous separation. The sedimentation centrifuge belongs to the category of horizontal screw centrifuges, and its full name is horizontal screw sedimentation centrifuge.

     

     

    Factors affecting the performance of horizontal screw centrifuges
     
    The application effect of the horizontal screw centrifuge is influenced by the mechanical part, which can be divided into adjustable factors and non-adjustable factors. The following is an explanation of each. First, by understanding its working principle, it can be effectively controlled during use
    The non-adjustable mechanical factors include: the diameter of the drum and its effective length. Semi-cone Angle of the drum. Pitch. Spiral type. The following classification is explained: Drum diameter and effective length: The larger the drum diameter, the longer the effective length, the larger the effective settlement area, and the greater the processing capacity. The semi-cone Angle of the drum: When the sediment settled on the inner side of the centrifuge drum is pushed towards the discharge port along the conical end of the drum, it is subjected to a downward sliding reflux force due to the effect of centrifugal force. The semi-cone Angle of the drum: A relatively important parameter in the design of centrifuges. In terms of clarification effect, the cone Angle should be as large as possible. In terms of slag conveying and dewatering effects, the cone Angle should be as small as possible. Pitch: that is, the distance between two adjacent helical blades, is a very important structural parameter and directly affects the success or failure of slag transportation. When the diameter of the helix is constant, the larger the pitch and the greater the helix Angle, the greater the chance that the material will get clogged between the helix blades. At the same time, a large pitch will reduce the number of turns of the helical blade, resulting in uneven material distribution at the conical end of the drum and causing increased machine vibration. Therefore, for difficult-to-separate materials such as activated sludge, the conveying of the residue is rather challenging, and the pitch should be smaller. Spiral type: According to the different ways of relative movement of liquid and solid within the drum, it is divided into counter-flow type and co-flow type. The feeding chamber of the counter-flow centrifuge is located in the middle of the screw, that is, near the boundary between the drying zone and the sedimentation zone, to ensure that the liquid phase has sufficient sedimentation distance, but the solid phase can only stay for the time it needs to pass through the conical part, so a relatively high centrifugal force is required. When materials enter the drum from here, the solid particles that have already settled in this area will float up again due to disturbance, and turbulence and additional vortices will also be generated, reducing the separation effect.
     
    2. Adjustable mechanical factors include:

     

    drum speed, differential speed (differential ratio), liquid ring layer thickness, and process factors. The following is a classification explanation: Drum speed: The adjustment of drum speed is usually achieved through a variable frequency motor or a hydraulic motor. The greater the rotational speed, the greater the centrifugal force, which is conducive to increasing the solid content of the mud cake. However, if the rotational speed is too high, the sludge flocs will be destroyed, which will instead reduce the dewatering effect. At the same time, higher rotational speeds have higher requirements for materials, increase the wear and tear on the machine, and the power consumption, vibration and level will also increase accordingly. Differential velocity (differential ratio) directly affects the sludge discharge capacity, the dryness of the sludge cake and the quality of the filtrate. Increasing the differential velocity is beneficial for enhancing the sludge discharge capacity, but the dewatering time of the sediment will be shortened, and the moisture content of the sludge cake after dewatering will be high. At the same time, excessive differential velocity will increase the disturbance of the screw to the liquid pool in the clarification zone, and the quality of the filtrate will be relatively poor (commonly known as "backmixing"). The thickness of the liquid ring layer: The thickness of the liquid ring layer is an important parameter for equipment optimization, directly affecting the effective sedimentation volume of the centrifuge and the length of the drying zone (shore zone), and thereby influencing the treatment effect of sludge dewatering. Generally, it is achieved by manually adjusting the height of the liquid level baffles when the machine is shut down. During adjustment, it is necessary to ensure that the heights of all liquid level baffles are consistent; otherwise, it will cause severe vibration during the operation of the centrifuge. An increase in the thickness of the liquid ring layer will expand the sedimentation area, and the residence time of the material in the machine will also increase accordingly, improving the quality of the filtrate. However, at the same time, the length of the drying zone (shore zone) within the machine will shorten, resulting in a decrease in the dryness of the mud cake. On the contrary, reducing the thickness of the liquid ring layer can achieve a higher solid content in the mud cake, but it comes at the expense of the quality of the filtrate. Process factors: To improve the dewatering performance of sludge, an appropriate amount of organic high-molecular flocculants, such as polyacrylamide (PAM), should generally be uniformly added before mechanical dewatering to reduce the specific resistance of the sludge, making it easier to dewater after the separation of the solid and liquid phases of the sludge. The type of flocculant must be compatible with the characteristics of the sludge, as well as the type of equipment and operating conditions. In many cases, the reagents that perform well in the beaker test for flocculant selection do not have better performance in practical applications. A very important reason for this is that although the characteristics of the reagents to some extent meet the characteristics of the sludge, they cannot fully meet the operating conditions of the equipment.
     

    There are many factors that affect the dewatering efficiency of the horizontal screw centrifuge, and these factors interact with each other. Therefore, the treatment effect is the result of the combined action of the above-mentioned factors. The selection of the centrifuge should be based on the actual situation of the engineering project, and the adjustment of operating parameters should comprehensively consider factors such as the expected moisture content, solid content and economy of the dewatered mud cake as required by the disposal method of the dewatered mud cake.

  • Innovation and application of vertical cuttings spin dryrs, key equipment in the oil drilling industry

     
    Oil drilling, as a globally significant energy resource, faces numerous challenges during the extraction process. During the drilling process, a large amount of drilling cuttings are produced. These cuttings are usually mixed with drilling fluid. If not handled properly, it will not only cause waste of resources but also cause serious pollution to the environment. As an advanced solid-liquid separator, the vertical cuttings dryer plays a crucial role in the oil drilling industry. It can effectively process drilling cuttings, achieving the recycling and reuse of drilling fluids and the standard discharge of cuttings. It can effectively handle drilling cuttings, achieving the recycling of drilling fluid and the standard discharge of cuttings. With the continuous growth of global energy demand and increasingly strict environmental protection standards, it is of great practical significance to have a thorough understanding of the working principle and performance advantages of vertical cuttings dryers and their application in the oil drilling industry.

     

     

    I. Overview of Vertical Rock Cuttings Spin Dryer
     
    1. Working principle
     
    This equipment utilizes centrifugal force to achieve efficient separation of drilling cuttings and drilling fluid. During operation, the drill cuttings mixture enters the high-speed rotating drum. Under the action of centrifugal force, the denser cuttings are thrown towards the drum wall and scraped off by the scraper, while the drilling fluid accumulates towards the center and is discharged from the overflow outlet. This method features high separation efficiency and large processing capacity, which can meet the rapid and precise demands of solid-liquid separation in the oil drilling industry.
     
    2. Structure
     
    Vertical cuttings spin dryers are typically composed of rollers, scrapers, drive units, frames and control systems. The drum is the core component of the equipment. Its material is generally made of high-strength and wear-resistant materials to withstand the huge centrifugal force and rock debris wear during high-speed rotation. The scraper is installed inside the drum. Its function is to promptly scrape off the rock debris adhering to the inner wall of the drum, ensuring the normal operation of the equipment and the separation effect. The drive unit provides power for the rotation of the drum. Generally, high-performance motors and transmission systems are adopted to achieve smooth and high-speed rotation of the drum. The frame plays a role in supporting and fixing each component, ensuring the stability of the equipment during operation. The control system is used to control the start-up, stop, speed regulation and other operating parameters of the equipment, to achieve the automatic and intelligent operation of the equipment, and to improve the operational efficiency and reliability of the equipment.
     
    3. Performance characteristics
     
    Efficient solid-liquid separation
    The vertical cuttings spin dryer has excellent solid-liquid separation capabilities and can effectively separate drilling fluid from drilling cuttings. This equipment was designed and manufactured with full consideration of the harsh environment and high-load operation requirements of oil drilling operations. It adopts high-quality materials and advanced manufacturing processes to ensure high reliability and stability. In practical applications, many oil drilling enterprises have reported that the vertical cuttings spin dryer can still maintain a good working condition after continuous operation for thousands of hours, providing a strong guarantee for the smooth progress of drilling operations. Easy to operate and maintain

     

     

    Ii. The Key Role of Vertical Cuttings Dryers in the Oil Drilling Industry
     
     
    Reduce waste emissions
     
    During the process of oil drilling, a large amount of drilling cuttings and waste drilling fluid are directly discharged without effective treatment, which will cause serious pollution to the surrounding environment. Vertical cuttings dryers can effectively separate drilling fluids from cuttings, reduce the water and oil content of cuttings, and thereby decrease the overall waste discharge. The oil content of the processed rock cuttings can be as low as less than 5%, meeting international environmental protection standards and significantly reducing the risk of pollution to soil, water and other environments.
     
    2. Reduce pollution to soil and water
     
    The traditional methods for handling drilling waste are prone to causing harmful substances to seep into the soil and water bodies, resulting in long-term damage to the ecological environment. The vertical cuttings dryer separates harmful substances from cuttings in drilling fluid through efficient solid-liquid separation, preventing these substances from causing damage to soil and water. The vertical cuttings dryer effectively separates harmful substances in the drilling fluid from the cuttings through solid-liquid separation, avoiding direct pollution to the soil and water. Meanwhile, the recovered drilling fluid can be reused after further processing, reducing the usage of new drilling fluid and indirectly lowering the potential pollution risk to the environment.
     
     
    3. Recovery and reuse of drilling fluid
     
    Drilling fluid is an important consumable in oil drilling operations, and its cost accounts for a large proportion of the total drilling cost. Vertical cuttings dryers can effectively recover drilling fluid from drilling cuttings. After appropriate treatment, the drilling fluid can be reused in drilling operations. Generally speaking, a large amount of drilling fluid can be recovered by using this kind of equipment, and the recovery rate can reach a certain percentage.
     
    4. Ensure the continuity of drilling operations
     
    In drilling operations, if drilling cuttings are not dealt with in a timely manner, they will accumulate, affecting the normal operation of drilling equipment and even causing safety accidents. The vertical cuttings dryer can continuously and stably process drilling cuttings, ensuring the continuity of drilling operations. The vertical cuttings dryer provides continuous and stable cuttings treatment, ensuring the continuity of drilling operations. The high reliability and stability of the equipment enable it to maintain a good working condition for a relatively long time, reducing the downtime caused by equipment failures.
    Vertical cuttings spin dryers play a crucial role in the oil drilling industry. It not only complies with increasingly strict environmental protection regulations, reducing waste emissions and pollution to soil and water, but also effectively lowers costs through the recycling and reuse of drilling fluids and the reduction of waste treatment costs. Meanwhile, its rapid processing of drilling cuttings ensures the continuity of drilling operations, which can significantly improve drilling efficiency, reduce flammable and explosive substances, lower the risk of equipment failure, and enhance overall operational safety.

  • Hot washing process of oil sludge: A key technology for environmental protection and resource regeneration in oil fields

    The rapid development of the petroleum industry has brought about a thorny problem: oily sludge. These black pollutants produced during the processes of oil extraction, transportation and refining contain a large amount of toxic and harmful substances. They not only damage the structure and ecological functions of the soil, but also may pollute groundwater and threaten human health.
     
    The traditional incineration and landfill treatment methods are not only inefficient but may also cause secondary pollution. Facing the increasingly severe environmental protection situation, oilfield enterprises urgently need an efficient, environmentally friendly and economical solution.
     
    The hot washing process of oil sludge is an efficient and environmentally friendly technology for treating oil sludge. It achieves the reduction, harmless treatment and resource utilization of oil sludge by heating, washing and separating the oil sludge, thus separating the oil, water and solid substances in the oil sludge.

     


     

    The hot washing process flow of oil sludge mainly includes the following steps:
     
    1. Vibrating screen pretreatment: Screen the oil sludge to be treated to remove large particle waste. At the same time, add spray water to make the oil sludge more moist, which is convenient for subsequent treatment.
    2. Mixing tank treatment: Put the sieved oil sludge into the mixing tank, add hot water and chemicals, and stir thoroughly. The agent can play a role in emulsifying, dispersing and dissolving the oil in the oil sludge, while hot water can increase the temperature of the oil sludge and accelerate the separation of the oil.
    3. Sedimentation tank separation: Put the stirred oil sludge into the sedimentation tank for sedimentation separation. During the sedimentation process, the oil in the sludge will float to the water surface, forming floating oil, while water and solid substances will settle at the bottom of the tank. Floating oil can be transported through pipelines to waste oil tanks for recycling and reuse, while water can be transported through pipelines to water tanks for recycling and reuse.
    4. Centrifuge separation: Place the sediment at the bottom of the sedimentation tank into a centrifuge for centrifugal separation. During the centrifugation process, water and solid substances in the sediment will be separated. The water can be transported through pipelines to the water tank for recycling, while the solid substances will be discharged and treated as waste residue.


     

    The hot washing process of oil sludge has the following advantages:
     
    1. Environmentally friendly and pollution-free: The entire treatment process does not produce waste gas, wastewater or waste residue, and will not cause secondary pollution to the environment.
    2. High resource utilization rate: The oil in the oil sludge can be recovered and reused, and at the same time, water and solid substances can be recycled, which improves the utilization rate of resources.
    3. Low processing cost: Compared with traditional oil sludge treatment methods, the oil sludge hot washing process has a lower processing cost and a higher cost performance.
    The hot washing process of oil sludge is an efficient, environmentally friendly, resource-efficient and low-cost oil sludge treatment technology. It can effectively solve the problem of oil sludge pollution and contribute to the sustainable development of the petroleum industry.

  • Xi ‘an KOSUN successfully delivered the renovation project of the vibrating screen mesh bracket for a domestic lake dredging project

    Following the successful delivery of a set of sludge treatment and screening system for the second phase of a large lake dredging project in early 2025 and receiving high recognition from the owner,
    Xi 'an KOSUN has recently taken on the key equipment upgrade task for the first phase of the project again – successfully completing the intelligent transformation of the vibrating screen mesh support
    frame and passing the owner's acceptance in one go The continuation of this technical collaboration marks that Kosun's technical strength and service quality in the field of environmental protection dredging have continuously won the trust of the market.
     
     
    The dredging project in this lake area has a processing capacity of up to 1,800 cubic meters per hour and requires continuous high-intensity operation for many years.
    Traditional vibrating screens are prone to problems such as deformation and cracking of the screen frame during long-term high-load operation, which affects the efficiency of silt removal.
    To break through this bottleneck, the project party conducted multiple rounds of on-site investigations and technical comparisons. Ultimately, Xi 'an KOSUN was selected to carry out a special upgrade and transformation of the existing equipment to enhance the screening efficiency and reduce maintenance costs.

     

              


     

    After a thorough analysis of the on-site working conditions, the Kosun technical team proposed three core renovation plans:
     
    1. Material upgrade: Low alloy high strength structural steel is adopted to replace the original carbon steel brackets, effectively extending their service life.
    2. Structural optimization: Change the type of screen mesh from the original small polyurethane screen mesh to large stainless steel strip seam mesh to reduce maintenance costs and decrease the workload of personnel.
    3. Static mechanical analysis: Adjust the structure of the screen mesh bracket through static mechanical analysis to effectively avoid cracking risks.

     

              

     

    This renovation not only solved the existing problems of the owner, but also provided a standardized renovation example for large-scale water area dredging projects.
    In the future, we will continue to output the "KOSUN solution". After the project is completed, it is expected to significantly improve the screening efficiency of the dredging project.
    Xi 'an KOSUN responds to the call of "Green mountains and clear waters" with technological innovation It demonstrates the social responsibility of environmental protection equipment enterprises.
     
     
    Xi 'an KOSUN has been dedicated to the research and development and manufacturing of solid-liquid separation equipment for over 30 years. Its products are widely used in municipal sludge,
    river dredging, mine tailings and other fields. Its independently developed vibrating screen series equipment is renowned for its high stability, and its service network covers more than 70 countries around the world.

     

     

  • The ＂golden pair＂ in the mud solid control system: the classification coordination mechanism of the desander and the centrifuge

    In the slurry solid control system, after the vibrating screen completes the separation of coarse particles, the coordinated action of the desander and the centrifuge becomes the key link to achieve precise classification of solid particles. Through different separation principles and classification treatments, the solid particles in the mud are efficiently separated by particle size, which not only ensures the stable performance of the drilling fluid but also significantly improves the utilization rate of resources and environmental benefits.
     

           

     

    I. Working Principles of Desander and Centrifuge
     
    Desander: Separation of medium particles under centrifugal force field
     
    Working principle: The solid-containing slurry enters the cyclone in a tangential direction. Under the centrifugal force field generated by high-speed rotation, the denser solid particles (76-47μm) are thrown towards the wall of the cyclone and discharged downward along the cone, while the liquid phase and fine particles are discharged from the central overflow pipe.
    Technical features: Processing capacity 50-200m³/h, separation efficiency depends on the feed slurry pressure (0.2-0.4MPa), cyclone diameter (8-12 inches), and sand discharge port size (1/4-1/2 inch).
     
    Centrifuge: Fine separation through ultra-high-speed rotation
     
    Working principle: The slurry enters the high-speed rotating drum (3000-5000 RPM), generating a strong centrifugal force to separate ultrafine particles (<15μm) from weighting agents such as barite. The liquid phase is discharged through the overflow port, and the solid phase is conveyed to the slag discharge port by the screw conveyor.
    Technical advantages: The separation accuracy can reach 5μm, the barite recovery rate exceeds 90%, and the material loss is significantly reduced.


     

     

    Ii. Synergistic Mechanism: "Classification – purification – circulation" in a trinity
     
    Classification treatment: The desander serves as the pretreatment unit
    The desander prioritizes the separation of medium particles larger than 74μm, which can reduce the processing load of the centrifuge by 30-50%. Data from a certain shale gas project shows that the processing capacity of the centrifuge after pretreatment has dropped from 150m³/h to 80m³/h, and the service life of the equipment has been extended by 20%.
     
    Deep purification: The centrifuge achieves fine control

     

    After being treated by the desander, the solid content of the mud was reduced to below 8%. The centrifuge further reduced the content of particles smaller than 15μm from 12% to within 5%, significantly improving the rheological properties of the drilling fluid.


     


     

    Resource recycling: A win-win situation for economic benefits and environmental protection
    The collaborative system can achieve a barite recovery rate of over 90%, and the moisture content of rock cuttings after dehydration is less than 30%. It can comprehensively reduce the cost of mud by 25-40% and cut the discharge of hazardous waste by more than 40%.
     
    Iii. Equipment Selection and Maintenance Guide
     
    Selection suggestions
    Desander: Polyurethane wear-resistant cyclone is preferred, and the processing capacity should cover the maximum drilling displacement (120%).
    Centrifuge: Select the dual-motor drive model based on the density of the slurry. The material of the drum needs to be corrosion-resistant
     
    Key points of maintenance
    Daily inspection: Cyclone wear condition, centrifuge vibration value
    Regular maintenance: Lubricate the bearings weekly and replace the seals monthly
    Anti-clogging measures: Install 100 front-mounted filters and configure an automatic backwashing device
     
    Hierarchical collaboration doubles efficiency
    The collaborative effect of the desander and the centrifuge is essentially an art of balancing "efficiency and precision". The former rapidly separates medium-sized particles through centrifugal force, while the latter achieves ultrafine purification through ultra-high-speed rotation. Both are indispensable. In the modern drilling field that pursues cost reduction, efficiency improvement and green low-carbon development, optimizing the collaborative mechanism of this "golden pair" will inject continuous vitality into the mud solid control system.