Biochar sustainably increases crop yields and sequesters historical carbon dioxide emissions
Horizontal bed biochar production kiln. This unit can be used for a variety of feedstocks, it has a pre-dryer, incorporates the ability to closely control process parameters of temperature and residence time, and can be flexibly configured to make use of the excess heat produced, and condense tars from the raw syngas. Capacity can be adjusted by increasing or decreasing the width and length of the unit, up to a maximum of about 4 tonnes of char produced per 24 hour day. Heat energy to dry and pyrolyse the feedstock is provided by flaring a portion the syngas produced. It is also possible to mount and operate this unit on a trailer.
High Capacity Biochar Production. This unit is designed for higher capacity production from wood chip only. Heat energy to pyrolyse the feedstock is provided by flaring a portion the syngas produced.As dimensioned above, it would process about a tonne of wood chip per hour and produce 8 tonnes of biochar per 24 hour day. The diameter and height can be enlarged to increase capacity, up to about 16 tonnes a day. Process parameters of temperature and residence time can be controlled. Accessories to pre-dry the feedstock, or make use of the excess heat produced, which amounts to approximately 1.4 to 1.7 MWh per tonne of feedstock processed, can be easily added to the unit. A water jacket to condense wood tars from the raw syngas stream is another possible option.
Tilting batch kiln for easy manual biochar production. Our batch kiln is designed primarily for sticks or split wood. The tilting mechanism allows for easy loading and unloading. It is also possible to configure 3 units in a round robin fashion so that the excess heat from one is used to start the pyrolysis process in another. These units require no electricity, so they can be run in remote locations. They can also be mounted on and operated from a trailer.
A corn field with biochar ...
... and without biochar.