Title:
A METHOD AND APPARATUS FOR PRODUCING BIOCHAR
Document Type and Number:
WIPO Patent Application WO/2014/155058
Kind Code:
A1
Abstract:
It is known to produce biochar from wood by the use of ring kilns and the like. However, they are inefficient and release 'greenhouse gases' to the atmosphere. The present invention provides a method of producing biochar from woody biomass comprising the steps of (a) placing feedstock (60) in a first kiln (10); (b) burning fuel in an oxidiser (70) and directing the resultant heated gases from the oxidiser to the feedstock to reduce the moisture content of the feedstock; (c) burning fuel in an oxidiser and directing the resultant heated gases from the oxidiser to the feedstock to pyrolyse the feedstock; (d) removing at least some of the pyrolytic gases, released from the feedstock in step c, to the oxidiser for burning therein; (e) directing at least a portion of the at least partially inert gases resultant from the burning of the pyrolytic gases in step d to the feedstock to regulate the amount of heat and air supplied to the kiln to controllably continue pyrolysis of the feedstock therein.
Inventors:
MCCHESNEY IAN (GB)
Application Number:
PCT/GB2014/050837
Publication Date:
October 02, 2014
Filing Date:
March 17, 2014
Export Citation:
Assignee:
CARBON GOLD LTD (GB)
International Classes:
C10B49/02; C10B53/02
Foreign References:
| US20060280670A1 | 2006-12-14 | |||
| GB2322439A | 1998-08-26 | |||
| US20130067802A1 | 2013-03-21 |
Attorney, Agent or Firm:
HANDSOME I.P. LTD (Queen Square, Bath Somerset BA1 1HN, GB)
Download PDF: