20 TPD Semi-Continuous Pyrolysis Plant

A 20 TPD semi-continuous pyrolysis plant improves reactor turnover through high-temperature residue discharge and independent carbon black cooling. It offers medium-scale recyclers higher efficiency with more manageable investment, installation and operation.

Yushunxin transfers hot residue into a sealed cooling unit, where carbon black cools to about 50°C for bagging. Meanwhile, the main reactor prepares for the next cycle. Under suitable conditions, this design can support three batches within two days.

Semi-continuous pyrolysis plant

How Is the Semi-Continuous Pyrolysis System Configured?

Each section is configured according to the production flow.

A semi-continuous pyrolysis system is usually configured according to the actual material flow: pretreatment, screw feeding, reactor heating, oil gas recovery, combustible gas reuse, rear hot discharge, carbon black cooling, tail gas treatment and electrical control. Each section affects feeding stability, oil recovery efficiency, discharge speed and long-term operation.

Complete semi-continuous pyrolysis process

  • Waste tire and rubber feedstock should be de-wired and crushed into uniform blocks or particles, ideally 2–30 mm. Removing excess steel wire helps protect the screw feeder, improve rear discharge and reduce equipment wear.
  • PE, PP and PS plastics should be sorted and crushed into small, even pieces before pyrolysis. Operators should remove PVC and PET as much as possible because these materials may reduce oil quality, shorten reactor life and increase pressure on the tail-gas treatment system.
  • Oil sludge requires dehydration and impurity removal before feeding. When moisture exceeds 30–40%, Yushunxin usually recommends mechanical dewatering to lower fuel consumption and support more stable pyrolysis operation.

After pretreatment, the material enters the semi-continuous pyrolysis reactor through a screw feeding system. Stable feeding size and controlled impurity content help reduce blockage risk and keep the reactor loading more uniform. This is especially important for projects using rubber blocks, plastic flakes or oil sludge with variable viscosity.

The rotating pyrolysis reactor is heated by a burner system using LPG, diesel or natural gas. The reactor commonly works at 450–520°C, while some materials may require adjustment within 450–550°C. Under controlled thermal conditions and micro-negative pressure, the material decomposes into oil gas and solid residue.

The oil gas generated during pyrolysis enters the oil gas collection unit and condenser. After cooling, the condensable gas becomes pyrolysis oil and is stored in oil tanks. For plastic projects with wax-forming materials, a de-waxing unit can be added to reduce blockage risk and improve condensation stability.

Non-condensable combustible gas can be treated through safety devices and returned to the burner system as auxiliary fuel. This helps reduce LPG, diesel or natural gas consumption during stable operation. The gas reuse section should be matched with water seal, flame arrestor and other safety protection devices.

After pyrolysis is completed, hot residue is discharged from the rear side into a carbon black cooling reactor or sealed cooling unit. The main reactor can prepare for the next batch while the carbon black cools separately. When the carbon black temperature drops to around 50°C, it can be collected and bagged. This configuration helps the system achieve about 2 days / 3 batches under suitable operating conditions.

The tail gas treatment system is configured according to local emission requirements and material conditions. It may include dust removal, spray treatment, activated carbon adsorption or other purification units. The electrical control cabinet helps coordinate feeding, heating, rotation, condensation, discharge and safety protection, making daily operation easier for the customer’s team.

Feedstock Form

Typical Materials

Project Evaluation Focus

Whole or Large-Size Materials

Whole tires, cut tires, tire blocks, conveyor belt waste

Feeding method, reactor loading, pretreatment cost

Shredded or Irregular Solids

Tire chips, rubber scraps, plastic scraps, cable skin waste

Material size, impurity level, oil recovery potential

Sorted Plastics

PE, PP, PS, selected ABS plastics

Oil yield, condensation efficiency, de-waxing requirement

Mixed or Composite Waste

Mixed plastics, aluminum-plastic waste, packaging scraps

Sorting need, chlorine risk, residue separation

Oil-Based Materials

Oil sludge, tank bottom sludge, oily waste

Oil content, moisture, viscosity, sealed feeding, residue discharge

Product application affects project return.

Product application directly affects project returns. Waste tires, plastics and oil sludge generate different products, so buyers should evaluate local demand, product (pyrolysis oil, carbon black, solid residue ) use and residue disposal before selecting a pyrolysis solution. The table below summarizes the main outputs and their common applications.

Recovered Product

Main Source

Application

Pyrolysis Oil

Waste Tires / Waste Plastics / Oil Sludge

1. Used as industrial fuel in boilers, furnaces, cement plants, brick factories and steel plants.

2. Further refining can produce diesel-range fuel for industrial heating, generators and heavy machinery.

Recovered Carbon Black

Waste Tires

1. Sold as fuel-grade carbon material or ground into fine powder.

2. Pressed into briquettes to improve storage, transportation and fuel use.

Solid Residue

Oil Sludge

Non-hazardous residue may be used in suitable construction materials after testing and local compliance approval.

Combustible Gas

Waste Tires / Waste Plastics / Oil Sludge

Returned to the burner system after purification and safety treatment to heat the reactor and reduce external fuel consumption.

Advantages of Semi-Continuous Pyrolysis Equipment

Semi-continuous pyrolysis equipment combines mechanical feeding, high-temperature residue discharge and flexible production control. With a typical capacity of 5–20 TPD, it suits commercial projects that have stable feedstock supply and need higher efficiency without excessive investment.

Product of semi-continuous pyrolysis machine

A water-cooled screw can discharge hot residue without waiting for the reactor to cool completely. This reduces downtime between cycles. A properly configured line can complete about three operating cycles within two days, improving equipment utilization and daily output.

Mechanical feeding and enclosed discharge reduce repeated manual loading, reactor opening and direct handling of hot residue. This creates a cleaner production route and limits operator exposure to dust and high temperatures.
The control system coordinates feeding, reactor rotation, temperature monitoring, gas recovery and residue discharge. Your team can maintain more consistent operation while relying less on intensive manual work.

Semi-continuous pyrolysis equipment is suitable for investors who want to raise output but are not ready to invest in a large automated production line.
Hot feeding, faster residue discharge and mechanical material transfer improve operating efficiency without adding unnecessary system complexity. This gives budget-conscious projects a practical path to reduce labor, increase daily capacity and expand production step by step.

Which Yushunxin Models Can Be Selected for 8–20TPD Projects?

Model selection should match feedstock, working cycle and site conditions.

Yushunxin provides YSX-S8, YSX-S10, YSX-S12, YSX-S15 and YSX-S20 semi-continuous pyrolysis equipment for different 8–20TPD project requirements. Final capacity should be calculated according to raw material type, feeding size, loading condition, heating time, discharge efficiency and actual working schedule.

Model

YSX-S8

YSX-S10

YSX-S12

YSX-S15

YSX-S20

Capacity Per Batch

8 Tons

10 Tons

12 Tons

15 Tons

20 Tons

Reactor Size

2200×6000 mm

2200×6600 mm

2800×8000 mm

2600×6600 mm

2800×6600 mm

Reactor Thickness

14-22 mm

14-22 mm

14-22 mm

14-22 mm

14-22 mm

ReactorMaterial

Q345R / SS304 / SS310 / SS316

Q345R / SS304 / SS310 / SS316

Q345R / SS304 / SS310 / SS316

Q345R / SS304 / SS310 / SS316

Q345R / SS304 / SS310 / SS316

Heating Method

Direct Burner Heating

Direct Burner Heating

Direct Burner Heating

Direct Burner Heating

Direct Burner Heating

Fuel Type

LPG / Diesel / Natural Gas

LPG / Diesel / Natural Gas

LPG / Diesel / Natural Gas

LPG / Diesel / Natural Gas

LPG / Diesel / Natural Gas

Discharging Method

Rear Optional

Rear Optional

Rear Optional

Rear Optional

Rear Optional

Working Temperature

450–520°C

450–520°C

450–550°C

450–520°C

450–520°C

Container Loading

2×40HQ

2×40HQ

1×40FR + 1×40HQ

1×40FR + 1×40HQ

1×40FR + 1×40HQ

Land Requirement

300–500 m²

Working Cycle

2days three batchs
  • Projects still testing feedstock stability can start with the YSX-S8 or YSX-S10. These semi-continuous pyrolysis models are easier to operate and manage.
  • Once feedstock supply and oil sales become stable, the YSX-S12, YSX-S15 or YSX-S20 can support higher output. Final selection should match the project budget, site layout and target production rhythm.

If you are evaluating a 20 TPD Semi-Continuous Pyrolysis Plant for sale, Yushunxin can provide model selection, process configuration, equipment quotation, shipping plan, installation guidance and commissioning support for your recycling project.

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