Tag Archives: Best Quality Centrifuges

DCLW series Industry Decanter centrifuge is widely used in wastewater treatment, crude oil recovery, coal tar recovery, palm oil recovery, fruit juice production, protein production, DC Solid control production, starch production, food waste treatment, etc. with VFD, and PLC Control, can choose 2/3 phase separation.

Our Centrifuge Drum and spiral parts titanium welding with 304/316 / 316L/321 stainless steel, stale performance and long service, warmly welcomed by the customers at home and abroad.

decanter centrifuge

DCLW Decanter centrifuge is driven by two motors. The main motor drives the drum and the outer casing of differential through belts while the auxiliary motor, after the differential shifting speed, drives the spiral propeller. This will make the drum and the spiral propeller rotate in the same direction with a certain differential speed.

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Decanter centrifuge are used to process unweighted and weighted, water-based and oil-based drilling fluids (muds). Mechanical energy is utilized to increase the gravitational force exerted on solids that are present in the mud system.oilfield Decanting Centrifuge are able to apply over 3,000 G-forces on the liquid/solids mixture, which separates the heavier solids from the lighter solids. Additionally, high G-forces separate fine solids from liquid.

 

DC dewatering decanter centrifuge is GW series decanter centrifuge with beach angle of 11 degrees. DC GW series decanter centrifuge is usually used dewatering and thickening purpose. It is widely used for maximum dewatering requirements of municipal and industrial wastewater sludge.

Today we shipped a set of DCLW350-1200 decanter centrifuge to pakistan used for wastewater treatment. The dewatering decanter centrifuge is designed for easy separation material include large particle size, high density difference of solid and liquid, low viscosity, high concentration, high treatment capacity and higher dryness than clarity. The materials like sludge or wastewater containing fine particles usually need to be added with flocculants to gather the fine particles condensed into large ones, and then dewatered with DCLW series decanter centrifuge.

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The characteristics of Decanter centrifuge by DC

:1. Innovative design includes longer bowl, allowing drilling fluids to thread through more slowly, thus resulting in drier solids and finer separation point;
2. Big bowl offers big volume. It also generates high-G force;
3. Stainless steel bowl, scroll, compartment are available and covered with corrosion-proof coating so as to have longer lifespan;
4. Tungsten carbide scroll points with wide spacing flights at tapered end create a finer layer of conveyed solids for consistent, uniform separation and maximum solids control efficiency.
5. German FAG or Swedish SKF brand bearings are available;
6. Electrical Components complies with SIEMENS/Schneider ATEX or IEC Ex.

decanter centrifuge

DC Machinery not only provide users with Dewatering Decanter Centrifuges, rely on DC rich production line of separation and conveying equipment. DC can also provide users with turnkey solutions for the material dewatering process, including solutions for material transportation, classification and dewatering.

Decanter centrifuge are used to process unweighted and weighted, water-based and oil-based drilling fluids (muds). Mechanical energy is utilized to increase the gravitational force exerted on solids that are present in the mud system.

Oilfield Decanting Centrifuge are able to apply over 3,000 G-forces on the liquid/solids mixture, which separates the heavier solids from the lighter solids. Additionally, high G-forces separate fine solids from liquid.

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Last week, DC Solid control company shipped 3 sets of Middle decanter centrifuge to Saudi Arabian used for oilfield to treat unweighted drilling fluid. The model of the three sets decanter centrifuges are DCLW450-1000. And the main specification as below:
Drum diameter: 450mm
Drum Length: 1000mm
Drum Speed/rpm: 1480rpm
Main Motor Power: 22kw-IV class
Back Motor power: 5.5kw-IV class
Max treating capacity: 40m3/h
Separation factor: 548G

centrifuge

Such decanter centrifuge applies to solid liquid separation of suspension liquids with solid phase particle equivalent diameter ≥ 3μm, weight concentration ratio ≤10%, volume concentration ratio ≤70% or solid liquid density difference ≥0.05g/cm . HSS has different series of decanter centrifuges with bowl diameter from 220 ~ 1100mm. The machine can be also sorted by bowl type, such as thickening, dewatering, classifying, clarifying etc., to be fit for different separations.

Please contact DC Solid control to get more detailed information about all kinds of decanter centrifuges.

Decanter Centrifuge is designed for the drilling mud solids control and oilfield waste management, wastewater processed and HDD drilling site. Today, DC Solid control shipped a set of high speed decanter centrifuge to UAE for HDD Field.

The high speed centrifuge is VFD drive decanter centrifuge with variable speed allows drilling contracor or mud service company to do the barite recovery, fine/ ultra fine solids separation,dewatering centrifuge. DC have the decanter centrifuge from 9 inch bowl to 22 inch bowl available for different applications. DC decanter centrifuge bowl length and diameter ration is over 3, this gives the best result for the drilling fluids cleaning.

drilling centrifuge

The model of this high speed centrifuge is DCLW355 Series. DCLW355 Decanter Centrifuge is the most popular size centrifuge in the oil drilling industry. It can be used for fine/ultra fine solids separation, barite recovery and zero-discharge dewatering. With it’s removable legs, the DCLW355 Decanter Centrifuge can be used on solids control mud tank or the telescopic skid for drilling waste management.

centrifuge

The bowl diameter of the DCLW355 Decanter Centrifuge is around 14inch (360mm) with bowl length 50inch (1270mm), 3.5 is good bowl length/diameter ration for oil drilling mud. DCLW355 Decanter Centrifuge is driven by main motor and back derive motor with High Torch Sun-Wheel Gear Box, DC have the fixed speed available with different pulley for option to change the centrifuge speed, and VFD drive with PLC control available for your different applications.

 

Decanter centrifuge is the third phase solid separation equipment of drilling fluid mud system. This week DC Solid control shipped 2 sets of Middle decanter centrifuge to Russian. The model of the Middle centrifuge is DCLW450-1000 Series which is a professional unit used for drilling fluid cleaning system.

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The main specification as below:

Drum dia:450mm
Drum length: 1000mm
Treating capacity: 45m3/h
Main Power: 22kw
Back Power: 11kw

The Operation Principle of Drilling Mud Decanter Centrifuge

The drilling fluid decanting centrifuge is driven by two motors. The main motor drives the drum and differential shell rotation by the belt . The vice motor drives the spiral through the differential variable speed . The drum and spiral
rotate together in the same direction, but at different speeds . Separate the solid phases in the drilling mud by the centrifugal sedimentation principle. Suspending fluids is pushed into the rotor drum through the inlet pipe and under
the force of screw propeller, under the effect of centrifugal force, the solid phases will be pushed onto the inside wall of the drum, pass the impeller on the screw propeller and be discharged from the exhaust hole at the small side of
the drum. The fluids is excreted from the overflow hole of the large end. So continuous circle like above to achieve the target of continuous solid-liquid separation.

DCLW decanter centrifuge adopts centrifugal force to separate solid particles out of drilling fluid.Different solid or particle have different density and flow speed,some decanter centrifuge also can separate particles as different size
and density DCLW decanter centrifuge is widely used in oil and gas drilling,chemical,foodstuff,pharmacy,mineral beneficiation,water treatment,etc.

Centrifuges are used to process unweighted and weighted, water-based and oil-base drilling fluids. The DCGLW series centrifuge uses high G-forces to separate fine solids from liquids.

Mud is introduced in the feed chamber through a feed tube and exits in to the bowl via four nozzles. The DCGLW is able to exert up to 2,870 G’s on the mud. It has a fixed drive unit and has customized hardware and software packages that can be designed to meet specific installation and operation needs. With a processing capacity up to 200 gal/min the 3400 series centrifuge offers outstanding performance over a wide range of drilling applications and conditions.

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Features of DCGLW Series Decanter Centrifuge

1. Straight and cone section of the drum are made from 2205 duplex stainless steel material,adopt centrifugal casting process;
2. Remaining components of the drum assembly are made from SS316L;
3. Screw carrier adopts YG6 wear-resistant alloy sheet protection.With long life,easy maintenance and replacement;
4. Diversion port of screw pusher and slag-drip opening of the drum are protected by replaceable wear-resistant alloy sleeve,prolonging the service life and maintenance cycle.

DCGLW series decanter centrifuge is widely used in trenchless HDD, city bored piling, oil & gas drilling, Drilling Waste Management, tunneling construction, environment protection, chemical Industry, food industry, Pharmaceutical Industry, Oil Sludge Dewatering Systems, Coal Bed Gas Solids Control System, Oil Mud Separation, mining, Water Drilling etc.

 

Centrifuge-evaluation procedures in common usage develop an efficiency rating expressed in percentage barite recovery and/or drilled-solid injection. DCLW Series decanter centrifuge can be used for onshore and offshore drilling site based on its good quality.

DC solids control produce 3 models of high speed,middle speed, variable speed 2 phase centrifuges that separate solids from liquids. In all three models, the operating principle is theoretically the same.

Decanter centrifuge

Besides above DC Solid control company has developed a wide range of decanting centrifuge equipment to provide optimal results. In weighted drilling fluid systems, decanters recover as much as 95% of heavy barite, which is returned to be re-used in the active system, while also removing finer, lower-gravity solids. By discarding lower-gravity solids our equipment is able to maintain a higher level of fluid consistency and help produce higher drilling efficiencies.

Please find more information on DC solids control site. Or you can contact us freely. DC provides the high quality solids control decanter centrifuge, also other equipment.

 

Centrifuge used in well drilling mud solids control is decanter centrifuge, also referred as decanting centrifuge. It is rather popular with drilling contractors or fluids service company. Strictly speaking, centrifuge is the 5th purification or cleaning equipment for drilling fluid. It is set after desilter cone or mud cleaner. It is mainly used to separate solids sized 2~7 microns.

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Description of decanter centrifuge

Decanter centrifuge including low speed, middle speed and high speed one. Different speed will produce different centrifugal force, treating capacity, and separation point. Centrifuge consists of scroll conveyor, drum, motor, differential, inlet port, discharge port, solid discard port, and so on. Decanter centrifuge will be fed by submersible slurry pump or screw pump with drilling fluid for finer separation of solid.

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Centrifuge procedure

The material feeding into the inlet port, under centrifugal force generated by drum and scroll conveyor rotation, the solid will be dried and discharged via solids discard port. We know, on the centrifuge bowl or drum there are liquid zone and drying zone. Cleaned drilling fluids will flow out centrifuge via the clean liquid effluent at liquid zone end.

If you are looking for an oilfield decanter centrifuge that is highly effective and affordable, please browse our products. We offer a range of centrifuges of different sizes and capabilities that give you the exact results you need at a price that you can afford.

High speed has costs, not to the driller, but to the centrifuge owner. Suppose the centrifuge is one pound out of balance. If the centrifuge rotates at 900 RPM, the unbalanced load is 276 lbs, and this unbalanced load is carried by the bearings through to the frame. If it sped up too 1800 RPM, the unbalance load goes up to 1,104 lbs. To keep the centrifuge from shaking itself to death or an early bearing failure, higher speeds require better mechanical tolerances. Generally, to maintain these tolerances over a service life of many years, the centrifuge should be made from stainless steel.

decanter centrifuge

The second problem is stress. All of the mud in the centrifuge is pressing outward putting the bowl and hubs under stress. As the centrifuge is run faster and faster, the stresses build up and can cause catastrophic failure. No decanter centrifuge should be run faster, with a heavier weight mud than it’s designer planned on, and in addition, the structural parts should be in good shape. Corrosion and wear can weaken a centrifuge to the point where it is unsafe at any useful speed. Higher speeds require high strength, corrosion resistant materials.

centrifuge

The third problem is wear. Drilling mud contains grit; it slowly grinds the wearing surfaces of the centrifuge, and eventually enough metal is worn away that the centrifuge must be rebuilt. The wear rate is proportional to the g-force. At low speeds, the grit is ground into the metal at a moderate force, but doubling the bowl speed causes four times the wear rate. It cuts the service life to 1/4 of what it would be, and considering down time, easily increases the maintenance cost five fold.

In addition, as the centrifuge wears, it loses metal. It unfortunately doesn’t lose it uniformly, and as it wears, it goes out of balance. As I discussed previously, imbalance means premature failure through excessive vibration.

Horizontal decanter centrifuge has the advantages of good separation performance, well-adapted, can be automatic continuous operated, exercise intensively is small, small footprint and lower maintenance cost. So the decanter centrifuge had a rapidly development recent years, which can be widely used in industrial wastewater and municipal wastewater process field.

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Main feature of the decanters centrifuge compared with others:
1.1 Separation factor is high: Max 4000.
1.2 Ration of length and diameter is big: Max 4.2.
1.3low energy consumption: 1/3~1/2 of the same product.
1.4 Smoothness Of Operation : Parts precision dynamic balancing and the whole set machine work dynamic balance, vibration strength of the decanter is below 5mm/s, is fall far below 《Technical condition of decanter centrifuges》, 7.1mm/s.
1.5 Low noise: less than 85Db(A).
1.6 Operating reliability: DC company decanters differential mechanism adopt planetary gear transmission in high speed, and adopt pin-cycloid planetary gearing in low speed to improve the working reliablity. Spiral drive main bear use roller bearing and the structure of the thrust ball bearing which can improve the bear ability of the Axial force.
1.7 Wear-resistant treatment: The touching part of our company is made of stainless steel and superior alloy steel, the blades of screw pusher paint abrasion- resistant alloy or spectacles special cemented carbide.
1.8. All kinds of models: The diameter series of the decanter produced by our company are 250、350、450、550, slenderness ratio is 2. 3. 4. ect.

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DC decanters centrifuge  widely used in oil, chemical, light industry, mining, metallurgy, food, environmental protection and ect, which can totaly meet the requirements of dehydration of solid, and liquid phase.