Three-phase Centrifuge for Crude Oil and Coal Chemical Industry

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WP centrifuges are applied in various oil recovery projects. Slope oil is a valuable but dangerous resource in oilfield, in order to mostly recover the oil, decanter centrifuge plays a key role while removing the impurity from the sludge. Apart from the slope oil, Contaminated Lubricating Oil and engine oil needs to have water and other impurities removed on a constant basis. It’s a reliable way to prevent symptoms of wear appearing on engine components and a drop in performance or even failures.

Oil separation and recovery
In the oil exploration activities, the oil sludge generated from pipeline rupture and the tank bottom sludge generated from tank cleaning all contain a large amount of crude oil. In order to better protect the environment and save energy, centrifuges are widely used to separate and recover the crude oil. WPE, after years of field trials and scientific and technological innovation, developed a special three-phase centrifuge for recovery of crude oil, the recovery rate of crude oil as high as 85% -90%.

Crude Oil and Coal Chemical decanter centrifuge
Coal tar typical separation

Process Description

Coal tar recovery
Coal tar is a dark brown, viscous liquid produced when the coal is distilled off. The yield rate of coal tar is usually at 3-4% of the dry coal. According to different coking temperatures, coal tar can be divided into high-temperature tar, intermediate temperate and low temperature tar. According to different pyrolysis temperate, it can be divided into low temperature (450 ℃ ~ 650 ℃) dry distillation tar, low and medium temperature (600 ℃ ~ 800 ℃) furnace tar, Medium temperature (900 ℃ ~ 1000 ℃) vertical coal tar, high temperature (1000 ℃) coking tar. The crude tar is produced by the coking process with circulating ammonia spray gas and condensate cooling in the primary cooler, containing about 4% water, and sometimes up to 8 to 10%.

Coal Tar Specifications

Type

Color

Density

Content

Low Temperate
Coal Tar

Auburnish black

Less than 1g/cm³ Alkanes, olefins and aromatic hydrocarbons around 50%.
Phenols around 30%
High mechanical impurities, high metal impurities, high aromatic content

High Temperate Coal Tar

Black

More than 1g/cm³ It is the product of secondary decomposition of low temperature tar at high temperature, which is fundamentally different from low temperature coal tar

WPE Centrifuge has high separation efficiency, the separated particles can be as small as 2μm in diameter. The treated sludge contains more than 60% solids. It is easy to optimize the clarification of the liquid, as well as the dryness of the solid phase.

Coal Tar Centrifuge Models and Specification

Model

Dia
mm

Ratio

Speed
rpm

G force

Main Motor kW

Back Motor kW

Capacity m3/h

Weight
kg

Dimension
(L×W×H)mm

LWS350×1435B

350

4.1

4000

3136

22~30

7.5

4~8

2500

3400×900×1400

LWS450×1845B

450

4.1

3800

3640

30~37

11

10~15

4000

4500×1000×1400

LWS500×2050B

500

4.1

3500

3430

37~45

15

15~20

5000

4900×1200×1470

LWS530×2173B

530

4.1

3300

3232

45~55

18.5

18~22

5600

5100×1250×1500

LWS585×2400B

585

4.1

3000

2948

75~90

22

25~30

6500

5300×1300×1750

LWS630×2583B

630

4.1

3000

3175

90~110

30

30~40

7800

5100×1550×1400