Process for converting ligneous matter of vegetable origin by torrefaction, and product obtained thereby
United States Patent 4553978
Link to this page:
http://www.freepatentsonline.com/4553978.html

Abstract:
The present invention relates to a process for converting ligneous matter of vegetable origin by torrefaction, and to the product obtained. Wood or any other ligneous matter is subjected in a neutral atmosphere to a treatment of torrefaction at a temperature of between 200° and 280° C., and preferably between 240° and 260° C. for a duration of 30 mins. to 5 hours. The product of the invention is not fermentable, it has a specific mass close to 0.25 kg/dm3, a calorific power of at least about 5000 kcal/kg, a content of fixed carbon of 35 to 40% and can be broken up by hand; it may be used as fuel in boilers and in gas generators.
Inventors:

Yvan, Schwob (Paris, FR)

Application Number: 06/410636
Filing Date: 08/23/1982
Publication Date: 11/19/1985

Green Charcoal by Pronatura Internationali, France

Two billion people around the world use wood for household energy needs. This contributes significantly to the world's deforestation activities as well as increasing the risk of droughts and desertification. In an attempt to reduce deforestation, Pro-Natura has developed Green-Charcoal.