Centrifuges for drilling generally include high-speed centrifuges and medium-speed centrifuges. 1000-2000r/min is a medium-speed centrifuge, and higher than 2000r/min is a high-speed centrifuge.
The choice of centrifuge is affected by the particle size of the solid phase particles to be separated, the diameter of the centrifuge drum, the highest speed, and the separation factor. The sedimentation centrifuge commonly used on the drilling site is the difference in the density of solid and liquid as the separation basis, mainly used to remove the solid phase material in the drilling fluid of 2-10μm, and is the last level of drilling fluid solid control equipment.
In response to this problem, we should first trek the decanter centrifuge drum speed, of course, within the safety tolerance range, and the material is non-corrosive or less corrosive. Then trudge the filtration area inside the centrifuge drum. The method is to increase the lining mesh, so that there is a small gap between the filter bag and the centrifuge drum, and the trekking permeability; Increase the section area, such as adding V-shaped filter baffles.
In the process of using the decanter centrifuge, the problem of slow dewatering power of the decanter centrifuge is encountered, which is manifested as the increase of solid image material in the drum, the extension of dewatering time of the decanter centrifuge, and the appearance of non-drying. This phenomenon belongs to the general phenomenon.
It can be a few times dehydration methods, reducing the amount of centrifuge dehydration filter material per time, more, less discharging method. If the material is sticky, wash it within the limits allowed by the process. Trudging solid phase material particle size, in the case of unchanged process, if you want to trek fear rate, you can consider increasing, such as adding flocculant.
Decanter centrifuge is one of the widely adaptable solid-liquid separation equipment on the market, mainly used for solid-liquid separation. When selecting the equipment, it depends on the specific condition of the material, the separation or not of the decanter centrifuge and the separation function are determined by the dryness of the solid particles in the suspension, such as salt and sugar and other water-soluble items, which need to be separated after using flocculant.
Kosun_decanter centrifuge is mainly composed of a drum, screw, differential system, liquid level baffle, drive system, and control system. It is a special equipment for solid-liquid separation designed according to the characteristics of petroleum drilling fluid, which 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 the drilling suspension by the principle of centrifugal sedimentation. The suspension enters the rotary drum from the feed pipe through the liquid outlet hole in the screw pusher. Under the action of centrifugal force, the solid particles are pushed to the inner wall of the rotary drum and discharged through the slag discharge port at the small end of the rotary drum through the blade on the screw pusher. This is repeated to achieve the purpose of continuous separation. Sedimentation centrifuge belongs to the category of horizontal spiral centrifuge, full name horizontal spiral sedimentation centrifuge. Factors affecting the use effect of decanter centrifuge
The use effect of decanter centrifuge, the impact of its mechanical part is divided into adjustable factors and non-adjustable factors, now respectively explained, first understand its principle of action, you can effectively control it in use
1, non-adjustable mechanical factors are drum diameter and effective length. Half cone Angle of the drum. Pitch. The following categories are described: drum diameter and effective length: The larger the drum diameter and the longer the effective length, the larger the effective settling area and the greater the processing capacity. Half cone Angle: When the sediment settling inside of the centrifuge drum is pushed to the discharge port along the end of the drum cone, it is subjected to the downward sliding reflux force due to the action of centrifugal force. Drum half cone Angle: a more important parameter in centrifuge design. In terms of clarifying effect, the cone Angle should be as large as possible. In terms of slag delivery and dehydration effect, the cone Angle is required to be as small as possible. Pitch: that is, the distance between two adjacent spiral blades, is a very important structural parameter, which directly affects the success or failure of slag transport. When the spiral diameter is fixed, the larger the pitch and the larger the spiral lift Angle, the greater the chance of the material being blocked between the spiral blades. At the same time, the large pitch will reduce the number of turns of the spiral blade, resulting in uneven material distribution at the end of the drum cone, resulting in increased vibration of the machine. Therefore, for difficult-to-separate materials such as activated sludge, slag delivery is more difficult, and the pitch should be smaller. Spiral type: According to the liquid and solid relative movement in the drum is divided into countercurrent and forward flow. The feeding chamber of the countercurrent centrifuge is in the middle of the spiral, that is, near the boundary between the dry zone and the settling zone, to ensure that the liquid phase has enough settling distance, but the solid phase can only stay for the time required to pass through the cone, so a higher centrifugal force is required; The material entering the drum from here will cause the settled solid particles in this area to float again due to disturbance, and will also produce turbulence and additional eddy currents, which will reduce the separation effect. 2, adjustable mechanical factors are drum speed, difference speed (difference ratio), liquid ring layer thickness, and process factors, the following categories are described: drum speed: drum speed adjustment is usually achieved by variable frequency motor or hydraulic motor. The higher the rotational speed, the greater the centrifugal force, which is helpful to improve the solid content of mud cake. However, excessive rotation speed will destroy the sludge flocculation, but reduce the dehydration effect. At the same time, the higher speed has high requirements for materials, the wear of the machine increases, and the power consumption, vibration, and level will also increase accordingly. Difference velocity (difference ratio), the difference velocity directly affects the slag discharge capacity, mud biscuit degree, and filtrate quality to improve the difference velocity, which is conducive to improving the slag discharge capacity, but the sludge dehydration time will be shortened, the water content of the mud cake after dehydration is large, and too large difference velocity will increase the disturbance of the spiral to the liquid pool in the clarified area, and the filtrate quality is relatively poor (commonly known as “back mixing”). Liquid ring layer thickness: liquid ring layer thickness is an important parameter for equipment optimization, which directly affects the effective sedimentation volume of the centrifuge and the length of the dry zone (bank zone), and then affects the treatment effect of sludge dehydration. Generally, it is achieved by manually adjusting the level of the liquid level baffle in the shutdown state, and the adjustment must ensure that the level of each level baffle is the same, otherwise, it will cause severe vibration when the centrifuge is running. The increase in the thickness of the liquid ring layer will increase the settling area, the residence time of the material in the machine will also increase correspondingly, and the quality of the filtrate will be improved, but the length of the dry zone (bank zone) at the same time will be shortened, resulting in the reduction of the mud biscuit degree. On the contrary, lower liquid ring layer thickness can obtain higher solid content of mud cake, but at the cost of filtrate quality. Process factors: To improve the sludge dewatering performance, an appropriate amount of organic polymer flocculant, such as polyacrylamide (PAM), should be uniformly added before mechanical dewatering to reduce the specific resistance of the sludge, so that the sludge solid phase and liquid phase separation is easier to dehydrate, and the type of flocculant must be adapted to the characteristics of the sludge and the type of equipment and operating conditions. In many cases, the agent with better performance in the flocculant selection beaker test does not have better performance in practical applications, and the important reason is that although the agent characteristics meet the sludge characteristics to a certain extent, it cannot fully meet the operating conditions of the equipment.
Many factors affect the dewatering effect of decanter centrifuge, and all factors affect each other, so the treatment effect is the result of the comprehensive action of the above factors, the selection of centrifuge should be combined with the actual situation of the project, the adjustment of operating parameters should be considered from the expected mud cake moisture content, solid rate and economic factors required by the disposal method of the mud cake after dehydration
KOSUN series of decanter centrifuges are used for sedimentation and separation of suspensions with solid particles diameter above 2μm. The specific gravity and viscosity of treated mud can meet the ideal operational requirements, providing conditions for better recycling and
efficient energy-saving environmental protection.KOSUN series of decanter centrifuges have undergone years of research,production, on-site application, and continuous optimization and
improvement. It has the advantages of good separation effect, large processing capacity, reliable operation, long service life, convenient maintenance, stable operation. and low noise.
Features and Advantages
Innovative designs include a longer bowl, which extends the residence time of the mud in the bowl,
resulting in drier solid phase and finer separation points.
Corrosion-resistant and wear-resistant bowl is provided, with quick-change hard alloy sleeves at the
sand discharge port of the cone bowl.
The discharge surface of the screw propeller is welded with a tungsten carbide wear-resistant layer.
We adopts bearings made by German FAG or Swedish SKF.
Electrical components comply with Siemens/Schneider explosion-proof standards or the International
Special screw pumps and submersible slurry pumps for centrifuge feeding are provided to meet the processing requirements under different operating conditions.
Solid-liquid separation centrifuge is an essential equipment for various industries to separate solid particles from liquid suspension. This process is critical for the purification and clarification of liquids and the recovery of valuable solids. A centrifuge works by applying centrifugal force to a mixture, causing the solid particles to settle at the bottom and the clarified liquid to drain from the top.
One of the main uses of solid-liquid separation centrifuges is in the wastewater treatment industry. Centrifuges are used to remove solid particles, such as sludge and sediment, from wastewater, resulting in cleaner water that can be safely discharged or reused. Additionally, centrifuges are used in the pharmaceutical and biotechnology industries to separate cells, proteins and other biomolecules from fermentation broths and cell cultures.
There are many advantages to using a solid-liquid separation centrifuge. First, they are able to efficiently separate solid particles from liquids, significantly reducing the amount of waste produced. Not only does this help minimize environmental impact, it also reduces disposal costs. Additionally, centrifuges provide a continuous and automated separation process, resulting in consistent and reliable results.
Another advantage of solid-liquid separation centrifuges is their versatility. They can handle a variety of solid-liquid mixtures, including those with high solids concentrations, making them suitable for a variety of industrial applications. In addition, centrifuges enable high levels of clarification, producing clear liquid products with very low solids content.
In addition, solid-liquid separation centrifuges are known for their compact design and low energy consumption, making them a cost-effective and space-saving solution for solid-liquid separation processes. They also offer flexibility in scalability and can be easily adapted to different production capabilities.
In summary, solid-liquid separation centrifuges play a vital role in various industries by efficiently and reliably separating solid particles from liquid suspensions. Their uses range from wastewater treatment to pharmaceutical and biotech applications, and their advantages include high efficiency, versatility and cost-effectiveness. As the industry continues to prioritize sustainability and efficiency, solid-liquid separation centrifuges are likely to remain an indispensable tool in the solid-liquid separation process.
KOSUN- China Solids Control Leader&Drilling Waste Management Expert Email: sales2@adkosun.com WhatsApp/Wechat:+86 13379250593 Contact person: Monica Li Online consulting: http://www.kosun.com http://www.kosuneco.com
The role of centrifugal pumps in drilling mud operations is critical to maintaining the efficiency and safety of the drilling process. One of the primary uses of centrifugal pumps in drilling in drilling mud operations is to handle mud.
Mud is a mixture of water and solids that is a byproduct of the drilling process. This mixture is often abrasive and may contain a variety of materials, including rock, sand and drill cuttings. Effective removal and transportation of this mud is important to prevent clogging of drilling equipment and maintain a clean working environment.
Centrifugal pumps in drilling are commonly used in drilling mud operations to handle the mud efficiently. These pumps are designed to use centrifugal force to increase the pressure of the slurry, making it easier to transport. A rotating impeller within the pump creates a high-speed slurry flow, which is then directed to the desired location through the discharge pipCe.
One of the main advantages of using centrifugal pumps in drilling to handle slurries is their ability to handle large volumes of fluid with minimal maintenance. These pumps are designed to handle abrasive materials and are wear-resistant, making them ideal for the harsh conditions of drilling mud operations.
In addition to handling the mud, centrifugal pumps in drilling also play a vital role in maintaining circulation of the drilling mud itself. Drilling mud is essential for cooling and lubricating drilling equipment and carrying drill cuttings to the surface. Centrifugal pumps in drilling are used to circulate drilling mud from the surface to the drill bit and back, ensuring that the mud remains in constant motion to perform its various functions.
centrifugal pumps
In summary, centrifugal pumps in drilling play a vital role in drilling mud operations, especially in handling the mud and maintaining drilling mud circulation. Their ability to efficiently transport abrasives and large volumes of fluid makes them an important component in ensuring the smooth and safe operation of the drilling process.
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KOSUN- China Solids Control Leader&Drilling Waste Management Expert Email: sales2@adkosun.com WhatsApp/Wechat:+86 13379250593 Contact person: Monica Li Online consulting: http://www.kosun.com http://www.kosuneco.com
Proper and timely maintenance of horizontal centrifugal sand pumps is necessary to ensure their normal operation and extend their lifespan. This aspect should be given importance for the use of any type of pump.
Check the oil level on the power end when the oil level stabilizes. This should be done at least once a day. If a chain drive is used, the oil level in the chain box should also be checked.
Observe the working condition of the cylinder liner and piston. It is normal to have a small amount of mud carried out with the piston. If there is leakage, promptly replace the piston and thoroughly inspect the wear of the cylinder liner. If there is significant wear, the cylinder liner should be replaced in a timely manner.
Check the cylinder liner cavity in the frame. If there is a large amount of mud or oil deposits, it should be cleaned. Check the water tank of the spray pump. If the water level is insufficient, it should be replenished. If the water quality is contaminated, it should be replaced. The water tank should also be cleaned.
Check the inflation pressure of the airbag to ensure it meets the operational requirements.
Check the reliability of the safety valve and replace it if necessary.
Check the pressure gauge of the lubricating oil pump for any changes. If the pressure is very low (less than 0.035MPa) or there is no pressure, promptly inspect the inlet and outlet filters for any blockages.
Loosen the clamp on the piston rod daily. Check if the clamp cone surface, the piston rod, and the connecting surface of the intermediate rod are clean. Rotate the piston rod one-quarter turn and tighten it. This is done to evenly distribute the wear on the piston, prolonging the lifespan of both the piston and the cylinder liner.
Before tightening the valve cover, apply lubricating grease to the thread surface. Check for any loosening every 4 hours.
Regularly observe the seals on the valve cover, cylinder liner (including the seal between the wear plate and the fluid cylinder), and the alarm hole. If there is mud discharge, promptly replace the corresponding sealing ring.
Above is the sharing of KOSUN Machinery regarding the maintenance and servicing of horizontal centrifugal sand pumps.
Tags： horizontal centrifugal sand pump, drilling mud centrifugal pump manufacturer, centrifugal pumps for sale
KOSUN- China Solids Control Leader&Drilling Waste Management Expert Email: sales2@adkosun.com WhatsApp/Wechat:+86 13379250593 Contact person: Monica Li Online consulting: http://www.kosun.com http://www.kosuneco.com
During the drilling process, a large amount of waste, such as cuttings and mud, is generated. The screw conveyor can be used to transport these wastes from the drilling wellbore to waste disposal equipment for processing and disposal.
2, Drilling fluid treatment:
Drilling fluid is an essential working medium in drilling and needs to be recycled and treated. The screw conveyor can transport the used drilling fluid from the bottom of the well to the treatment equipment for solid-liquid separation, sand and mud removal, and other treatments.
3, Cuttings waste disposal:
During drilling, the drill bit continuously cuts through the formation, resulting in a large amount of cuttings and waste. The screw conveyor can transport these cuttings’ waste to the treatment equipment for separation, filtration, recovery, and other treatments.
4, Drilling fluid additive transport:
The screw conveyor can also be used to transport various additives required for drilling fluid to the drilling wellbore, ensuring the stability and performance of the drilling fluid.
The KOSUN screw conveyor features a compact structure, small cross-section, lightweight, good sealing performance, high transmission efficiency, easy installation, disassembly, and movement, as well as safe operation. In oil drilling, it plays a crucial role in conveying, processing, and separating, thereby improving the efficiency and benefits of the drilling process.
Tags: screw conveyor, oil drilling, waste, disposal, for sale, manufacture, factory, benefits, process, efficiency
At the end of January 2022, a large oily sludge treatment system and related centralized control system designed and manufactured by KOSUN was completed, assembled and commissioned, and then packed in 14 train cars, which were loaded from China-Xi’an and successfully shipped to the project site in Aktau, Kazakhstan via the Eurasian railway line in 28 days.The production period of this system coincided with the outbreak of the new crown epidemic in Xi’an, China, and the city was closed. All KOSUN employees eliminated various difficulties. With the strong support of the China Railway Xi’an Bureau and the assistance of various departments, a week before the Chinese Lunar New Year The entire system has been shipped.
Factory Workshop Production Scene
This system is ordered by an internationally renowned general contractor of environmental protection projects in Europe from our company through international bidding, and the final use location is in Aktau, Kazakhstan. Our company has undertaken a series of work such as technical design, manufacturing, inspection, transportation, and foreign technical support services for the project.
KOSUN designed and produced this set of oiled sludge treatment system which is applicable to the treatment of solid waste collection station containing oil, it is an oiled sludge treatment system with international advanced technology, the system has a treatment capacity of 60 tons/hour, mainly consisting of six modules such as pre-treatment skid, screening skid, centrifuge skid, loading/unloading conveying system, water treatment system and electrical control system. The main equipment included are: coarse analysis screen, high frequency vibrating screen, sand cleaner, mud cleaner, slurry pump, horizontal spiral centrifuge, water treatment system, automatic dosing device and PLC electrical control system, fully meeting the environmental protection treatment requirements of the customer site.
System arrives at the project site in Kazakhstan
KOSUN is a professional environmental protection equipment manufacturer integrating product development, production and sales. Among the various solid waste treatment products designed and produced by KOSUN, the oil sludge treatment system is mainly used in the energy production field, such as the drilling waste from oil drilling platforms in the oil development and refining process, the refining three mud and oil sludge treatment at the bottom of oil tanks in oil refineries and oil and gas storage and transportation stations, the system is specially designed to treat oil sludge with high viscosity and high oil content. After environmental protection treatment, it can achieve the goal of reducing, resourceizing and harmless disposal of solid waste and wastewater produced in the production process of energy industry, and realize the double harvest of economic benefits and environmental protection and emission reduction.
