Biochar Energy Systems (BES) Open Source Transportable Trough Pyrolyser

1. Total Feed input depends on feedstock type, size and moisture content. For hardwood with a moisture content of 15% through will be approximately 250-300kg/hr dry 280-360kg/hr wet at maximum feed dimension 15mm and bulk density of 250kg/cu.m.

2. Biochar produced depends on feedstock and final pyrolysis temperature but for 500 C and hardwood feedstock 50-65kg/hr

3. Typical wet syngas flow rate from the trough 130kg/hr. Heat Production approximately 400kW.

4. Temperature range for biochar production 400-600C. 5. Desired temperature in the chamber 900C

Schematic of Internal Components

Stirring paddles (4)

Flare (7)

Feedstock hopper (1)

Primary air delivery

holes; six on each side (2)

Secondary air entrained via twenty holes on each side of

the reactor (5)

Biochar storage box (8) or screw Auger

Auxiliary air pipe (3)

Auxiliary air pipe

Water Injector 2

Water Sprays are used to activate the surface and control the temperature. In activating the surface H2 is produced and emissions are minimized

Designed Using Computational Fluid Dynamics to Ensure Low Emissions

Temperature Profile with Water Injection

Velocity Profile

CO about 140ppm and NOx less than 20ppm in initial testing with mixed wheat straw and chicken manure

Larger OPS design