The Pyrojin continuous plastic pyrolysis plant converts mixed waste plastics - PP, PE and PS - into light hydrocarbon oil in a sealed, continuous process. A purpose-built anti-clogging screw feeder stops plastic from melting and jamming the inlet, while dual temperature zones separate wax from oil for a cleaner product. It is built for medium and large-scale operators running 24/7 at 20-50 tonnes per day.
How a Continuous Plastic Pyrolysis Plant Works
- Mixed plastic granules or pieces are fed through a sealed, anti-clogging screw feeder.
- The plastic is indirectly heated above 200 °C under slight negative pressure with no oxygen contact.
- Two temperature zones separate the products: a low-temperature zone (300-350 °C) releases wax first, and a high-temperature zone (400-450 °C) completes cracking into light hydrocarbon oil.
- Oil vapour is condensed into liquid oil; non-condensable gas is separated.
- Purified non-condensable gas is recycled to fuel the furnace, cutting external energy use by about 50%.
- Flue gas is treated through alkali neutralisation (desulphurisation) and an adsorption tower before Treated discharge; solid residue is discharged through a water-cooled screw conveyor.
Models and Specifications
| Model | PC-30 | PC-40 | PC-50 |
|---|---|---|---|
| Capacity | 30 t/day | 40 t/day | 50 t/day |
| Furnace size | φ1700×12500 mm | φ2500×12500 mm | φ2500×15000 mm |
| Gross weight | 90 t | 100 t | 150 t |
| Working power | 100-120 kW | 100-120 kW | 100-120 kW |
| Heating method | Indirect heat (oil, natural gas or electricity) | Indirect heat (oil, natural gas or electricity) | Indirect heat (oil, natural gas or electricity) |
| Working pressure | Slight negative pressure | Slight negative pressure | Slight negative pressure |
| Shipping | 2×FR+5×40' HQ | 2×FR+5×40' HQ | 4×FR+5×40' HQ |
Series capacity covers 20-50 t/d. Main reactor runs at slight negative pressure, horizontal rotation 0.3 rpm, circulating-water cooling, noise ≤85 dB, installation footprint approx. 50 m × 20 m, 1-2 operators per shift.
Outputs: Light Hydrocarbon Oil, Wax and Char
- Light hydrocarbon oil (up to 55%) - for petrochemical use and further refining.
- Wax - separated in the low-temperature zone before oil cracking.
- Carbon black / char residue - recycled raw material for rubber, plastics and other industries.
Key Equipment Features
- Anti-clogging screw feeding for mixed plastic granules and pieces - prevents melt blockage.
- Dual temperature zones (300-350 °C / 400-450 °C) for wax-and-oil separation.
- Continuous catalyst injection to improve oil quality.
- Multi-stage sealed slag discharge holding residue at about 50 °C.
- Slight-negative-pressure gas containment with emission controls configured to project requirements.
- Automatic cleaning system for furnace and condenser coke removal.
- Self-powered gas recycling cutting about 50% of external energy use.
- Lean-manning automation (1-2 operators per shift).
- Temperature-control system configured around the selected process.
- Automatic nitrogen safety system and centralised control console.
Continuous vs Batch Pyrolysis
| Continuous (PC) | Batch (PB) | |
|---|---|---|
| Scale | ≥10,000 t/year | ≈3,000 t/year |
| Operation | 24/7 | Single furnace per day |
| Automation | High (1-2 operators) | Moderate manpower |
| Feedstock | Plastic granules / rubber powder | Whole tyres / mixed plastic |
Choose continuous for high-volume, round-the-clock output and lean manning; choose batch for lower upfront investment.
Frequently Asked Questions
- What plastics can be processed? PP, PE and PS are typical inputs; PVC, halogen-containing material and any mixed stream require feed analysis and engineering review.
- 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.
- What is the warranty? Warranty, installation, training and maintenance support are defined in the supply contract.
- What information do I need for a quote? Plastic type, daily volume, project location and target outputs.
Get a Configuration Quote
Send your plastic type, daily volume and project location, and a Pyrojin engineer will prepare a matching line configuration, layout and investment estimate.
Equipment and project images
