Process for converting ligneous matter of vegetable origin by torrefaction, and product obtained thereby
United States Patent 4553978
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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