Making fuel oil from drill cuttings, tank bottom oil sludge, floor oil sludge, oil soil, tank oil sludge, etc.

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Thermal Desorption Unit – TDU

Thermal desorption unit is also known as TDU, which is designed for the treatment for drill cuttings, tank bottom oil sludge, floor oil sludge, oil soil, tank oil sludge, etc. After processed by the TDU unit, the contaminated oil sludge can be converted into fuel oil. Beston Group has the latest popular TDU unit for sale for oil sludge recycling and disposal. Follow us to learn more about the system.

Thermal Desorption Unit
Installation of Beston Thermal Desorption Units for Drill Cuttings

What is Thermal Desorption Unit?

Thermal desorption units are the equipment to heat the contaminated materials in a sealed reactor by enough high temperature for enough long time, to dry and vaporize the contaminants from it, and then obtain fuel oil finally.

Thermal desorption unit can be also called TDU, oil sludge pyrolysis plant, oil sludge treatment system, etc. See the description on wiki here.

tdu unit

What is Thermal Desorption Used For?

Harmless treatment of oil sludge: the thermal desorption system is used for recycling different forms of crude oil sludge, including drill cuttings, tank bottom oil sludge, floor oil sludge, etc. After processed by the TDU system, the oil sludge will not pollute the environment any more.

Used as fuel in industries: after processed by the TDU plant, the crude oil sludge can be converted into fuel oil, which can be used as fuel in many industries, including cement plant, glass plant, power plants, steel plants, boiler plants, ceramic plants, etc.

Thermal Desorption Unit

What is Thermal Desorption Process?

thermal desorption process for drill cuttings

1. Feeding of Oil Sludge

Collect all of the oil sludge together and then unload them to the workshop. Most of thermal desorption units are installed in the open air. And then use auto screw feeder to feed them into the pyrolysis reactor.

2. Treatment of Oil And Gas

Under the oxygen-free, high temperature and sealed environment, the three main components of oil sludge: oil, sludge, and water will be decomposed.

When the temperature rises to a certain degree, oil gas will come out. Thereinto, heavy particles in the gas will be liquefied into heavy oil and then dropped into the heavy oil tank; light particles in the gas will rise up and liquefied into light oil in the horizontal tube condenser and then also be reserved in the oil tank.

3. Discharging of Slag

The slag will be automatically collected during the process. The flue gas, before safe emission, may contain carbon and cause global warming, so they need to be cooled down at first and then go through de-dusting, washing, water spray, ceramic ring adsorption and activated carbon adsorption to remove the harmful matters in it. Finally, it will be discharged safely.

Note: we strongly recommend you choose the continuous pyrolysis plant because the oil sludge needs a pre-treatment before pyrolysis.

Top 5 Benefits of Using Thermal Desorption Technology

1. During the heating process, the pyrolysis reactor does not touch the open flame, which greatly improves the service life of the equipment.

2. The intermediate frequency power supply can fine-tune the input power power, to realize constant temperature heating, and improve the obtained fuel oil.

3. The TDU unit has realized the industrialized production, and the daily oil sludge processing capacity of a single machine can reach 32 tons; the operation of the central console greatly reduces the production cost and improves the working environment and labor intensity of workers.

4. The intermediate frequency power supply can be cut off in an instant, which greatly improves the safety performance of the equipment during operation. It is an innovation in the thermal desorption equipment and has good economic and social benefits.

5. The discharging of exhaust gas meets the international requirements, and there is no external discharge of waste water and waste oil residue water.

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Beston Thermal Desorption Unit for Sale

Model BLJ-3 BLJ-6 BLJ-10 BLJ-16 BLL-16 BLL-30
Capacity 1-3t/d 4-6t/d 8-10t/d 12-16t/d 8t/d (only for rubber powder) 30-35t/d
Working Process Batch Batch Batch Batch Semi-continuous Fully continuous
Reactor Size φ1400*4900mm φ2200*6000mm φ2600*6600mm φ2800*7100mm φ2800*7100mm φ1800*18500mm
Reactor Material Q345R Q345R Q345R Q345R Q345R 310S stainless steel
Drive System 350 reducer+4kw drive motor 400 reducer+5.5kw drive motor 400 reducer+5.5kw drive motor 500 reducer+7.5kw drive motor 500 reducer+7.5kw drive motor ZQH650-50 reducer+15kw frequency conversion motor
Land (L*W*H) 18m*4.2m*6m 30m*12m*8m 30m*13m*8m 33m*13m*8m 33m*13m*8m 70m*20m*10m
Power 16.65kw 37.85kw 44.3kw 55.6kw 55.6kw 256kw
Burner 2*200,000 kcal 2*300,000 kcal 2*300,000 kcal 2*400,000 kcal 2*400,000 kcal 2.5 million kcal per set
Total Weight of Shipped Materials About 18t About 24.5t About 28t About 34.5t About 34.5t About 150t
Number of Containers 1*40HQ 1*40FR+1*40HQ+1*20 GP 1*40FR+2*40HQ 1*40FR+2*40HQ 1*40FR+2*40HQ 25m*8m bulk cargo+8*40HQ
Noise (dB) ≤60 ≤60 ≤60 ≤60 ≤60 ≤60
Heating Materials Fuel oil (including tyre/plastic pyrolysis oil), natural gas, LPG, diesel, etc.
Condensing System Vertical Condenser φ426*3000
Single piece condensing area
Single piece condensing area
Single piece condensing area
Single piece condensing area
Single piece condensing area
2 sets of vertical condenser
3-in-1 Condenser 3000*2200*2250
Condensing area
Condensing area
Condensing area
Condensing area
Condensing area

Note: Beston thermal desorption unit price varies by different models. If you are interested in the thermal desorption unit for drill cuttings, you can contact us for the latest TDU price.

Analysis of Oil Sludge Treatment Results

Profit of finished fuel oil

After processed by thermal desorption plant, the refined fuel oil can be sold directly or used as fuel oil in cement factory, glass factory or other industries. The products are favored by the market and bring considerable economic benefits.

Profit of oil residue

The soil residue produced after thermal desorption system can be landfilled or sold to brick factories to make bricks, or sold to oilfield companies for use as an oil well anti-slump agent.


Due to the relatively high hazard and serious pollution of oil sludge, the related petroleum department has given great financial support to the thermal desorption unit for drill cuttings. After the industrial park has obtained the relevant qualifications from the government’s environmental impact assessment department, the department will give a certain subsidy for each ton of oil sludge processed, and the subsidy is based on prevailing conditions.

Skid-mounted Thermal Desorption Equipment Shipped to Oman 2021
Skid-mounted Thermal Desorption Equipment Shipped to Oman

Why You Should Invest in a Thermal Desorption Unit?

Ecological Benefits

Oil sludge is polluting the earth seriously. The TDU unit can help solve the problem of environmental pollution, relieve the pressure of resource shortage and benefit the future generations.

Economic Benefits

You can enjoy subsidies from the government. Otherwise, you can also make money by crude oil sludge treatment. Through the above profit analysis table, you can see that the annual profit is very considerable.

Social Benefits

Investing in Beston thermal desorption units can create jobs for the local people. In addition to that, you will also enjoy the respect from others. Not only do you create jobs, but also improve the local environment.

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Why Choose Beston Group?

Top 3 In The Industry

Keep an average annual sales growth rate of 20% for 5 years continuously.

30+ Senior Project Consultants

Combine with more than 20 solution managers to provide you with multilingual, localized and professional services.

Complete And Competitive Solutions

Provide digital factory management, highly customized solutions, bidding support, and project feasibility analysis support.

Perfect Quality Control System

Strict and standard quality control procedures for the whole process in raw material storage testing, production testing, air tightness and safety testing, delivery and installation testing; we welcome any testing from third-party professional organizations.

Installation And Support

Provide the layout drawing design, foundation drawing design, PID drawing design, installation/operation/maintenance instructions.

After-sales Service

Quick feedback within 24 hours; spare parts can be deployed within 7 days; engineers can solve the problem both online and on-site.

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