Batch Plastic Pyrolysis Plant

The Pyrojin waste plastic batch pyrolysis plant converts mixed plastics - PP, PE, PS and other thermoplastic polymers - into diesel-like fuel oil, combustible gas and a small amount of residue through oxygen-free thermal cracking. It is built for small and medium-scale plastic recycling stations, renewable-resource businesses and independent investors. Built-in temperature zoning prevents chlorine-containing plastics such as PVC from decomposing at the wrong temperature and releasing toxic gas, protecting both the system and the operator.

How a Waste Plastic Batch Pyrolysis Plant Works

1. Mixed plastic waste is loaded into the horizontal rotary reactor.
2. The reactor is sealed and heated indirectly in a low-oxygen, anaerobic environment, so the flame never contacts the feedstock.
3. Segmented temperature control cracks the polymer chains into oil vapour and non-condensable gas.
4. The oil vapour is condensed into liquid fuel oil; the non-condensable gas is routed through a water-seal safety device back to the furnace for combustion.
5. Flue gas passes through a spray tower for acid-base neutralisation with alkaline lye (desulphurisation), then an adsorption tower, before discharge under the project's permitted limits.
6. The solid residue - carbon black - is discharged as a closed-loop by-product for activated carbon or recycling; there is no steel wire in plastic feedstock.

The system runs as a closed loop: the non-condensable gas heats the reactor for energy self-circulation, with no open-flame contact and controlled emissions.

Models and Specifications

Series capacity covers 1-15 t/d; PB-10/12/15 are the three standard models. Main reactor: horizontal rotation at 0.4 rpm, circulating-water cooling, normal-pressure design, external gear transmission, noise ≤85 dB, installation footprint approx. 35 m × 20 m, 4-6 operators per shift.

Outputs: Fuel Oil, Carbon Black Residue and Gas

• Diesel-like fuel oil - low viscosity, high ignition point and high calorific value; after simple dehydration and filtration it runs industrial boilers, kilns and heating equipment. Yield depends on the plastic mix (the PB platform lists 40-45% oil as a reference -.
• Carbon black / solid residue - a small amount, used for activated carbon or recycled as raw material.
• Combustible gas - recycled to heat the reactor, lowering operating cost.

Key Equipment Features

• Built-in temperature zoning that prevents PVC chlorine release at unsuitable temperatures.
• Indirect heating for uniform temperature control and longer reactor life (extended lifespan).
• Low investment cost and compact footprint for fast payback.
• External gear-ring drive for quiet, stable rotation.
• Combustible gas recycling for energy self-circulation and lower fuel consumption.
• Fully sealed horizontal rotary design for clean, closed operation.
• Slight negative pressure with automatic submerged-arc welding and ultrasonic NDT for safety.
• Multi-furnace tandem operation to reduce heat loss.
• Oil-gas fractionation tower separating fuel oil into three density grades.
• Multi-stage flue-gas purification for acid neutralisation and dust removal.
• Enclosed high-temperature char discharge for clean carbon-black handling.

Batch vs Continuous Pyrolysis

Choose batch for lower upfront investment, mixed-plastic feeding and a simpler system; choose continuous for high-volume, round-the-clock output.

Frequently Asked Questions

• What plastics can be processed? Mixed PP, PE and PS thermoplastics are standard; the plant can also handle other plastic waste. PVC-containing plastics are managed by temperature zoning to prevent chlorine release.
• What is the delivery time? The delivery schedule and departure port are confirmed in the commercial quotation.
• What payment methods do you accept? Mainly T/T; other methods on request.
• Are you a factory or a trading company? We operate our own factory in Shangqiu, Henan, China.
• Do you provide installation support? Installation, commissioning, training, warranty and maintenance support are defined in the supply contract.
• What is the capacity? Standard PB-10/12/15 models cover 10/12/15 t/day (1-15 t/d range); capacity can be customised.
• What information do I need for a quote? Plastic type, daily volume, project location and target outputs.

Get a Configuration Quote

Tell us your plastic type, daily volume and project location, and a Pyrojin engineer will prepare a matching configuration, layout and investment estimate.