Lw Decanter Centrifuge for Oil Sludge Treatment

• After-sales Service: 24 Hours on Line
• Warranty: 1year
• Type: Centrifuge
• Usage: Industrial
• Material: Stainless Steel
• Control System: Variable Frequency Drive
• Model NO.: LW
• Certification: GMP/CE/ISO
• After Warranty Service: Permanent Video Technical Support
• Transport Package: Wooden Case
• Specification: According to The Model
• Trademark: SHENZHOU
• Origin: China
• HS Code: 8421191000
• Production Capacity: 500sets/Year

Product Description

 

 

A cobalt-based alloy wearlayer is welded to the surface, which has excellent resistance to oxidation, corrosion and heat,giving
Screw convoy a longer life cycle.

3 phase decanter centrifuge is mainly designed for Solid-liquid-liquid three-phase separation of materials.With our over 10 years of experience in the separation industry, it is the most advanced type machine for 3 phase separation. It is designed for 24 hours continuous and smooth operation throughout the day. It is mainly composed of driving system, decanter bowl, screw conveyor inside the bowl, cover box, skid and VFD control panel.

To ensure that the separation process can take place, the solid phase must be the specifically heaviest phase and the two liquid phases must have different densities.The main difference between the 2 phase decanter and 3 phase decanter is that the 3 phase decanter not only separate the solids but also separate two phase of the liquid.

Differential

The differential drives the screw discharger and makes it rotate at a constant speed of the external drum. The speed difference between the external drum and the screw discharger is determined by the reduction ratio of the differentialand the speed of the external drum.

 

3 phase liquid-liquid-solid Decanter centrifuges, also called tricanter , Taking advantage of the principle that the heavy liquid,light liquid and solid phase, with different density and mutually insoluble in the mixed liquid, gain different sedimentation speed in the centrifugal force field or gravity force field, separating stratification or causing the solid particles in the liquid to deposit can be achieved.It is the popular machine throughout the world and widely used in the crude oil separation.Specially used for remove sludge and water from crude oil.

PLC Control Panel

The electrical control adopts the double conversion auto control system, which can display the parameters such as frequency, rotation speed, differential speed and current of operating major and auxiliary electrical engine. 

 

Eletrical Components: SIEMENS/Schneider/ABB

1) City tap water, domestic sludge dewatering; 2) Oil drilling mud dewatering; 3) Sludge Oil Recovery;
4) Refinery sludge concentrated dehydration; 5) Distiller 's grains dehydration; 6) Paper, printing and dyeing wastewater separation;
7) Medical sludge dewatering; 8) Soy protein dehydration; 9) Plant oil clarification and separation; 10) Cosmetic clarification and separation;
11) Bleaching powder separation. 12) Palm oil sludge Separating.

Separation principle: Under the action of centrifugal force field, when the density of the solid phase is greater than that of the liquid phase, the solid phase is deposited on the inner wall of the bowl, and the screw conveyor and the bowl move the solid phase to the discharge under the set differential speed. When it enters the cone end of the bowl and reaches the discharge port, it leaves the overflow surface, the moisture content of the solid phase is further reduced, and is discharged to the discharge port. The liquid phase overflows from the overflow port at the big end of the bowl.
The overflow radius can be adjusted to suit different materials. The smaller the overflow radius, the higher the moisture content of the solid phase and the lower the solid content of the liquid phase (the liquid phase is clearer); the larger the overflow radius, the lower the moisture content of the solid phase and the lower the solid content of the liquid phase. High (more turbid liquid phase).
LWX horizontal decanter (centripetal pump liquid) centrifuge: the liquid discharge method is centripetal pump, and the liquid discharge radius is adjustable. The outlet liquid has a certain pressure and can be directly connected to the outlet pipeline.
LWXF horizontal decanter (explosion-proof) centrifuge: Before starting the centrifuge, the centrifuge inner cavity and the casing cavity are replaced with nitrogen, and the oxygen content concentration in the inner cavity is below the set safe concentration before it can be started. Nitrogen is added during operation. Nitrogen seals are installed at both ends of the centrifuge to ensure the isolation of the centrifuge cavity from the outside and meet explosion-proof requirements. The motor of the centrifuge and the electrical components on site must meet the explosion-proof grade of the working condition. The transmission belt is antistatic and has static grounding. In explosion-proof applications, centripetal pumps are generally used. The solid outlet of the centrifuge must be connected to the fan and other devices.
The settling velocity of the solid-liquid two-phase mixture is determined by the dispersion state of the suspended matter and the two-phase density, and is also significantly affected by the surface state of the solid-liquid two-phase, because it can affect the stability of the mixture and control the interaction between particles. state of contact. The properties of these systems may also be time dependent, as some suspensions have settling velocities that vary with time.
Settling velocity is the main basis for type selection. By analyzing and testing the physical and chemical properties of the solid-liquid mixture, determining the separation process, and conducting necessary technical and economic analysis (product quality, yield, energy consumption, production capacity, operation safety, control), select the appropriate separation equipment.
Generally, the sedimentation method is more economical than the filtration method, especially in those cases involving high-volume, continuous liquid flow, gravity settling is considered to be the first choice.
When the density difference between the solid-liquid two-phase is very small, try not to use the sedimentation method for solid-liquid two-phase separation. Or increase the density difference through appropriate process methods, or increase its separation power through the action of centrifugal force.

Structure drawing of shenzhou three phase decanter centrifuge:

The feed product is pumped into the decanter centrifuge through an inlet. Feed into a horizontal bowl and then rotate. The bowl consists of a cylindrical portion and a conical portion. The separation takes place in the cylindrical part of the bowl. Fast rotation produces centrifugal forces of up to 4000 x g. Under these forces, solid particles with a higher density are collected and compacted on the wall of the bowl. The scroll (also a screw conveyor or screw conveyor) rotates inside the bowl at slightly different speeds. This speed difference is called a differential speed. In this way, the scroll conveys the precipitated particles along the cylindrical portion of the bowl to the conical end of the bowl. At the smallest end of the conical portion of the filter bowl, dehydrated solids leave the filter bowl through the discharge port. The clarified liquid exits through the mating disc (internal centrifugal pump).
With a 3 phase decanter centrifuge, it is possible to separate 3 phases from each other in one process step only. For example, two liquids which cannot be mixed because of different densities (e.g. oil and water) are separated from a solids phase. The heavy liquid (water) collects in the middle between the oil and the solids layer. Thus the two liquids separated from each other can be drawn off from the decanter. The solids are transported via the scroll to the discharge openings as it happens also in 2-phase separation

№	Items		Data	Remark
1	Drum diameter		355
2	Drum length		1460
3	Drum shape		Cylinder-cone
4	Wedge slope		2 × 8°
5	Maximum speed		4000Rpm	According toy our requirements to adjust
6	Separate factor(G-force)		3136g	Different rotation speed choose,the G-force is different.
7	Spiral shape		One end, levogyration	Spiral outer edge is sprayed with tungsten carbide
8	Differential		Planet gear differential	2K-H two stages
9	Maximum processing capacity		1-5m3/h	Different as material character and demand changes
10	Differential speed		3-30r/min	Frequency conversion adjustment
11	Motor	Main motor	15KW
		Mate motor	7.5KW
12	Gross weight		2300kg
13	Main bearing lubricate method		Grease lubricate
14	Overall dimension		3380*925*1530mm (length × width × height)
15	Inner Overflow diameter		Φ224	Adjust overflow board as technics demands
16	Outer overflow diameter		190-Φ230	Adjust overflow board as technics demands
16	Spiral emit residue capability		500~1000kg/h	Different as differential speed changes

№		Items				Data	Remark
1		Drum diameter				420
2		Drum length				1800
3		Drum shape				Cylinder-cone
4		Wedge slope				2 × 8°
5		Maximum speed				3300r/min
6		Separate factor				2560
7		Spiral shape				One end, levogyration	Spiral outer edge is sprayed with tungsten carbide
8		Differential				Planet gear differential	2K-H two stages
9		Capacity				3-10m3 /h	Different as material character and demand changes
10		Differential speed				3-30r/min	Frequency conversion adjustment
11		Motor		Main motor		YE2-160M1-2	30KW
				Mate motor		YE2-112M-2	11KW
12		Gross weight				2800kg
13		Main bearing lubricate method				Grease lubricate
14		Overall dimension				4050×1700×1100 (length × width × height)
15	Overflow diameter				Φ265			Adjust overflow board as technics demands
16	Spiral emit residue capability				500-1200kg/h			Different as differential speed changes

№	Items		Data	Remark
1	Drum diameter		500
2	Drum length		2000
3	Drum shape		Cylinder-cone
4	Wedge slope		2 × 8°
5	Maximum speed		3200r/min
6	Separate factor		2867
7	Spiral shape		One end, levogyration	Spiral outer edge is sprayed with tungsten carbide
8	Differential		Planet gear differential	2K-H two stages
9	Maximum processing capacity		20-30m3 /h	Different as material character and demand changes
10	Differential speed		3-35r/min	Frequency conversion adjustment
11	Motor	Main motor	YE2-225M-4	45KW
		Auxiliary  motor	YE2-180L-4	22KW
12	Gross weight		4480kg
13	Main bearing lubricate method		Grease lubricate	0.37K
14	Overall dimension		4190×1740×1215 (length × width × height)

№	Items		Data	Remark
1	Drum diameter		520
2	Drum length		2100
3	Drum shape		Cylinder-cone
4	Wedge slope		2 × 8°
5	Maximum speed		3200r/min
6	Separate factor		3154
7	Spiral shape		One end, levogyration	Spiral outer edge is sprayed with tungsten carbide
8	Differential		Planet gear differential	2K-H two stages
9	Maximum processing		20-40m3 /h	Different as material character and demand changes
10	Differential speed		3-35r/min	Frequency conversion adjustment
11	Motor	Main motor	YE2-225M-4	55KW
		Auxiliary  motor	YE2-180L-4	15KW
12	Gross weight		5100kg
13	Main bearing lubricate method		Grease lubricate	0.37K
14	Overall dimension		4350×1800×1000 (length × width × height)

Best Service for You

1) 7day*24hours Hot-line & Email Service
2) Your inquiry related to our products or prices will be replied in 24hours.
3) Well-trained and experienced staffs to answer all your questions in fluent English.

4) Abundant spare parts in stock are available to provide.

5) Our technicians could be dispatched for overseas service.
6) Your workers could get trained in our factory.
FAQ

1.What's the application of centrifuge?

This machine is widely used in many fields such as environmental, pharmaceutical food, chemical industry for separation/washing/dewatering . It can separate almost all liquid and solid with proper feature.

2.How to clean the machine?

The machine has self-cleaning function. When the processing is finished, you just put one button and the machine will do the cleaning automatically.

3. How to choose the machine material?

For the material, we have stainless steel 304, 316 and 321 for your option. Generally SS304 is used. If there's suspension with corrosion, then SS 321 /316 or Ti is needed.

4.What's the capacity of the machine?

Firstly we have different model with different capacity for this machine.

Secondly, the capacity will be customized according to concentration of the suspension. Higher the concentration, lower the capacity.

5. How is the processing result?

The finished cake moisture and solid lost rate is based on the material feature. And different machine just brings different processing capacity. Also we can offer testing service to get realistic results.