Batch Biomass Pyrolysis Reactor

The Pyrojin biomass to biochar batch reactor converts agricultural and woody residues - acai berries, rice husks, wood chips, straw and more - into biochar through slow pyrolysis at 350-500 °C. The controlled temperature range maximises biochar yield at 30-35%, producing a porous, highly adsorptive char suited to soil improvement, carbon sequestration and agricultural production. A flue-gas recirculation system reuses part of the pyrolysis tail gas as fuel, cutting fuel use by 40% compared with conventional designs.

How a Biomass to Biochar Batch Reactor Works

1. Crop and woody residues (acai berries, rice husks, wood chips, straw) are loaded; dry and wet materials can be mixed-fed.
2. The reactor is sealed and heated indirectly in a low-oxygen, anaerobic environment, so the flame never contacts the biomass.
3. Slow pyrolysis at 350-500 °C breaks the biomass down thermally, maximising the solid biochar fraction.
4. By-products - tar and combustible gas - are recovered and recycled to improve overall economic return.
5. A flue-gas recirculation system reuses part of the tail gas as fuel, reducing external energy use.
6. Flue gas passes through a spray tower for acid-base neutralisation (desulphurisation), then an adsorption tower, before discharge under the project's permitted limits.
7. The solid residue is discharged as biochar - not carbon black or steel wire.

The system runs as a closed loop, lowering harmful emissions and supporting a more environmentally friendly production process.

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, external gear transmission, noise ≤85 dB, installation footprint approx. 35 m × 20 m, 4-6 operators per shift.

Outputs: Biochar, Tar and Combustible Gas

• Biochar (30-35%) - porous structure with good adsorption, for soil improvement, carbon sequestration and agricultural production increase.
• Tar - a by-product recovered and recycled to improve overall economic return.
• Combustible gas - recycled as fuel through flue-gas recirculation, cutting fuel use by 40%.

Key Equipment Features

• Slow pyrolysis at 350-500 °C maximising biochar yield (30-35%).
• Porous, highly adsorptive biochar suited to soil improvement, carbon sequestration and agricultural production.
• Flue-gas recirculation reusing pyrolysis tail gas as fuel, cutting fuel use 40% versus conventional designs.
• Wide feedstock adaptability (acai berries, rice husks, wood chips, straw) with dry/wet mixed feeding.
• 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 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.
• Multi-stage flue-gas purification for acid neutralisation and dust removal.

Batch vs Continuous Pyrolysis

Choose batch for smaller biomass volumes and flexible dry/wet mixed feeding; choose continuous for high-volume, round-the-clock throughput.

Frequently Asked Questions

• What biomass can be processed? Agricultural and woody residues such as acai berries, rice husks, wood chips and straw; dry and wet materials can be mixed-fed.
• What is the biochar yield? Slow pyrolysis at 350-500 °C produces 30-35% biochar.
• 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? Feedstock type, daily volume, project location and target outputs.

Get a Configuration Quote

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