Coal Tar Dewatering and Recovery

As a by-product of coke and gas produced by coking plants, coal tar has absolute practical value in the industrial and medical industries. In the tar extraction process, dehydration and solid removal effects will directly affect the purity of tar. The purity of tar will directly affect its market value.

ZK SEPARATION Decanters for Coal Tar Recovery Process

ZK decanter centrifuge has huge technical advantages in the recovery process of coal tar. Because we have more than 20 years of experience and technology precipitation in industrial centrifuges, ZK coal tar decanter can be used in the dehydration and solid separation process in the tar recovery process of the coking plant. It can effectively separate solid impurities and water from the tar and extract high-purity tar. Simultaneously, our equipment has the characteristics of anti-wear protection and continuous operation and is equipped with an automated control unit, which can significantly reduce the labor operation cost and save the company the most considerable degree of production and operation costs.

Tar Decanter Centrifuge Parameters
Model LWS250 x 1025C(X) LWS350 x 1550C(X) LWS450 x 1845C(X) LWS520 x 2150C(X) LWS580 x 2400C(X) LWS650 x 2600C(X)
Speed (rpm) 5000 4000 3500 3200 3000 2800
Max G Force 3500 3136 3087 2982 2948 2854
Main Motor (kW) 11 22 30 45 55/75 75/90
Back Motor (kW) 4 5.5 7.5 15 18.5 22
Capacity (m3/h) >1 >3 ~ 5 >5 ~ 10 >10 ~ 15 >15 ~ 20 >20 ~ 30
Weight (kg) 1250 2500 4000 5200 6500 8000
Dimension (mm) 2500x800x1150 3700x1050x1400 3800x1150x1600 4800x1250x1800 5300x1750x1382 5600x1850x1500
Drive Type VFD + PLC + HMI
Bowl Material SUS2205(Duplex Stainless Steel) / SUS2304 (Duplex Stainless Steel) / 316L / 316 Centrifugal Casting
Screw Material SUS2205(Duplex Stainless Steel) / SUS2304 (Duplex Stainless Steel) / 316L / 316 Centrifugal Casting
Bearing SKF / NSK
Tar Decanter Separation Performance
  1. The centrifuge features high separation efficiency, compact structure, and continuous operation. The diameter of the separated particles can be reduced to 2 μm. The solid content (toluene insoluble matter) in the treated coke button is more than 45%, which can easily optimize the clarification of liquid and the dryness of solids.
  2. Tar quality after separation: aqueous ammonia content: <2.5%; tar content: ≥97%; solid content (> 100 μm): <0.3%.
  3. After separation, the tar in the aqueous ammonia: ≤ 4g/L.

Coal Tar Treatment Process

Coal tar treatment process

See More Similar Fields of Application

ZK Tar Decanter Application Cases

  • tar decanter
    Coal Tar Separation
  • coal tar decanter
    Coal Tar Treatment
  • tar decanter centrifuge
    Tar Cleaning

Why Choose ZK Decanter Centrifuge?

Reliable Quality

The bowl (core component) is made of SAF 2205 duplex stainless steel by centrifugal casting process, and its performance is superior to conventional 304 and 316. All weld joints have undergone flaw detection and thermal treatment, and are provided with certificates of conformity or records for traceability.

Stable Operation

The dynamic balance precision of the centrifuge is ≥ Class 2.5, which is superior to the requirement of the standard, so that the centrifuge can be operated smoothly and its longevity is extended. The noise of the complete machine is < 85 dB, the vibration intensity is < 7.1 (load) and 4.5 (no-load). It is equipped with a mechanical and electrical dual overload protection device to ensure safe operation.

long service
Long Service Life

The screw conveyor and bowl adopt of the most advanced, reliable and convenient wear-resistant treatment technology and structure in China. All bearings adopt original imported NSK/SKF bearings. The electric control box is made of electrical elements of famous brands such as Siemens and Schneider.

High Degree of Automation

ZK decanter differential speed automatic control technology can automatically adjust the screw conveyor’s differential speed, to prevent overload and blockage. The complete machine is equipped with bearing temperature sensor and vibration sensor, and is provided with alarms for main motor overload, differential over torque, low differential speed, etc. Meanwhile, its supporting frequency conversion (flameproof) control cabinet can realize automatic start and stop with one key.

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  1. ZK SEPARATION zkcentrifuge.com