Various Oily Sludge Treatment Solutions Decanter Centrifuge

• Customization: Available
• After-sales Service: 24 Hours on Line
• Warranty: 12monthes
• Model NO.: LW
• Type: Separating Plant
• Separation Mode: Sedimentation Type
• Operating Type: Continuous Type
• Installation: Horizontal
• Centrifuge Type: Horizontal Spiral Centrifuge
• Pressure: Low Pressure
• Condition: New
• Material: SS304 or SS316 L
• Machine Name: Lw Decanter Centrifuge
• Motor: ABB
• Touch Screen: Siemens
• Transport Package: Wooden Cases
• Specification: 2065*1050*800
• Trademark: SHENZHOU
• Origin: China, Jiangsu
• HS Code: 8421192000
• Production Capacity: 500sets
• Package Size: 130.00cm * 90.00cm * 160.00cm
• Package Gross Weight: 1050.000kg

Product Description

Treatment of crude oil and soil, oil sludge at the bottom of tank at oil and gas station, and oily sludge in sedimentation tanks.

• Crude oil and soil: In the process of drilling and test spraying in the oil extraction process, a large amount of crude oil falls on the ground and mixes with soil, sand, gravel, water and other substances to form a mixture of oil and soil. The oil content of it is generally 10%-30%. As there are all kinds of domestic garbage at the oil production site, in addition to mud and sand, there are also glass bottles, mineral water bottles, bags and other domestic garbage and other solid wastes in the sludge.
• Oil sludge at the bottom of tank at the gas station: When crude oil is stored for a long time in the storage tank of an oil and gas station, the high melting point wax, asphaltenes, colloids and the entrained silt and other inorganic impurities in the crude oil will become sediments together with the water, forming oily sludge at the bottom of the storage tank to reduce the effective volume of the storage tank. 
• Oily sludge in sedimentation tanks: Waste oil from oil refineries, petrochemical plants and other industries is usually poured directly into large sedimentation tanks. The oily sludge produced by sedimentation is called oily sludge in sedimentation tanks.

 

 

SHENZHOU waste oil recovery decanter centrifuges are specially designed to meet the separation requirements of the waste oil processing industry. The waste oil is normal consist of oil water and solids. SHENZHOU separation equipment offers high performance separation solutions to the 3 phase separation with maximum oil recovery.
 

 

• More sizes available with big length/diameter ratio of 4.2:1 or greater.
• High G force up to over 3000 G.
• Two phase or 3 phase separation decanter is available.
• Nitrogen purged centrifuge for explosion proof.
• Duplex Stainless Steel bowl for Corrosion resistant materials
• VFD control with HMI and PLC for automatically operation.
• Variable bowl speed, differential speed, and adjustable pump capacity for the system.
• Various scroll and bowl wear protection systems by tungsten carbide materials.
• Customized design with flexibility according to clients requirements.
• Worldwide partners and branches to offer you fast support for your waste oil recovery.

Depends on customer's requirements for the source of the waste oil and make-up of the raw material as well as the quality of the products after processing. The selection of equipment and process will be different, but a typical waste oil processing plant will include following.

• Separation of solids from the waste oil.
• Reducing the viscosity by using chemical or heating.
• Breaking the emulsions and make oil, water and solids bound in the emulsion accessible by de-emulsifier dosing for decanter centrifuge separation.
• Polymer dosing dewatering to improve the separation efficiency.
• 

  

  
  
   

• Oil storage tank bottom solids and water and oil
• Oily residues, slop oils from oil refineries
• Oil sludge lagoons
• Oil water mixtures from ship ballasts
• API oil water separator sludge treatment
• Industry discarded lubricant oils and emulsions
• Industrial oil / water and emulsion waste streams

   

 

 

Solution 1: High-efficiency LW series two-phase centrifuge

Working principle

After collecting the oily (waste) water by steam heating, add appropriate demulsifiers, active agents, etc., so that the oily water in the emulsified state can be demulsified. Then the oily (waste) water is separated by natural sedimentation in the grease trap. The upper layer of oil floating on the grease trap is collected and then enters the oil storage tank for further processing. The water in the middle layer of the grease trap, the undemulsified oil-water mixture and the sludge settled on the bottom layer are collected to enter the mixing tank for further processing. Using the high-efficiency LW series two-phase centrifuge to carry out the continuous separation of (oil + water) + slag. The centrifuge separated water and the undemulsified oil-water mixture are directly sent to the sewage treatment system for treatment. The high-efficiency dehydration LW series two-phase centrifuge can be used to complete this dehydration task. The slag phase after dehydration can be burned or thermally desorbed to recover the residual crude oil.

 

 

Among them, the Crude oil and soil needs to be vibrating and screened before heating and demulsification to remove large particles of soil, sand, glass bottles, mineral water bottles, bags, gauze and other solid wastes. Vibrating screens are used after pulping and demulsification for further remove the large particles of sand and then enter the centrifuge for separation.

Technological Points

1. Demulsifiers and surfactants can improve the efficiency of demulsification, increase the subsequent separation efficiency, increase the oil recovery rate and reduce the oil content in the slag phase.
2. Heating can reduce the viscosity of the oil, increase the oil recovery rate and reduce the solid content of the oil and water.
3. Adding PAM flocculant can increase the solid recovery rate and reduce the solid content in the liquid phase.
4. The use of high-efficiency LW series two-phase centrifuge can improve separation efficiency, increase oil recovery, and reduce residual oil content.
5. Water treatment solid-liquid separation uses high-efficiency LW series two-phase centrifuges, which can reduce the liquid content of the slag phase, facilitate transportation and increase the heat value of combustion.

Performance

• It can recover about 70-85% of oil (related to oil density, demulsification effect, temperature, etc.), and the recovered oil can be used for oil refining through further purification by a disc centrifuge.
• The dryness of the slag phase after centrifuge separation can reach 40~60%, and the total volume is reduced by more than 80% compared with before separation.

Model	Technical parameter					motor power		outline dimension(mm)	Machine weight (KG)
	(Diameter)mm	Rotation speed rpm	Length mm	Separation factor G	capacity M3/h	Main motor KW	Vice motor KW	Dimension: L×D×H
LW250×1000	250	3600	1000	1813	1-3	7.5/11	4/5.5	2065×1050×800	1100
LW360×1200	360	3500	1200	2467	3-8	11/18.5	7.5/11	2600×1500×850	1900
LW360×1500	360	3500	1500	2062	3-8	11/18.5	7.5/11	2800×1400×850	2000
LW420×1750	420	3200	1750	2406	4-20	30/37	11/18.5	3120×1580×1050	3000
LW450×1600	450	3200	1600	2578	5-25	30/45	11/22	3780×1050×1180	3500
LW450×1800	450	3200	1800	2578	5-25	30/45	11/22	3985×1050×1180	3600
LW450×2000	450	3000	2000	2266	5─25	30/45	11/22	4320×1050×1180	3800
LW500×1800	500	3000	1800	2517	10-30	37/55	15/22	4200×1110×1200	4300
LW500×2100	500	3000	2100	2517	10-30	37/55	15/22	4500×1110×1200	4500
LW550×1800	550	3000	1800	2769	10-35	45/55	18.5/22	4380×1160×1230	4800
LW550×2200	550	2800	2200	2412	10-35	45/55	18.5/30	4780×1160×1230	5000
LW650×1750	650	2000	1750	1454	20-50	75/90	30/37	4576×1300×1250	6000
LW650×2000	650	2000	2000	1454	20-50	75/90	30/37	4900×1300×1250	6200
LW800×2000	800	1800	2000	1450	40-100	90/110	45/55	6052×1460×2100	10000
LW1000×2350	1000	1600	2350	1432	50-140	110/132	55/75	6850×1860×2300	12800

 

Solution 2: High-efficiency LWS series three-phase centrifuge

The oily (waste) water is collected and heated by steam, and suitable demulsifiers, active agents, etc. are added to make the oily water in the emulsified state to achieve demulsification. The oily (waste) water after demulsification adopts high-efficiency LWS series three-phase centrifuge performs the continuous separation of oil + water + slag. The water separated by the centrifuge and the undemulsified oil-water mixture are directly sent to the sewage treatment system for treatment. It can be completed by the LW series two-phase centrifuge for dehydration. After dewatering, the slag phase can be burned or thermally desorbed to recover residual crude oil. The separated oil can be collected and used as crude oil.

Among them, the Crude oil and soil needs to be vibrating and screened before heating and demulsification to remove large particles of soil, sand, glass bottles, mineral water bottles, bags, gauze and other solid wastes. Vibrating screens are used after pulping and demulsification for further remove the large particles of sand and then enter the centrifuge for separation.

More parts show of the decanter centrifuge:
 

 

Performance

1. It can recover about 80~90% of oil (related to oil density, demulsification effect, temperature, etc.), and the recovered oil can be used for oil refining through the further purification of the disc centrifuge.
2. The water content of the oil phase after separation by the centrifuge can reach ≤3~5%.
3. The dryness of the slag phase after centrifuge separation can reach 40~60%, and the total volume is reduced by more than 80% compared with before separation.