Hydrogasification of biomass to produce high yields of methane

Details Hydrogasification of biomass to produce high yields of methane Hydrogasification of biomass to produce high yields of methane

C - Chemistry, Metallurgy

07

C

48/32

C07C 1/00 (2006.01) C10B 53/02 (2006.01)

Patent

CA 1300885

ABSTRACT A process for hydrogasification of biomass to produce high yields of methane utilizes a reactor capable of carrying out rapid pyrolysis. Biomass particles, hydrogen, particles of a suitable catalyst that has both cracking and hydrogenation activity, and heat are introduced into said reactor. Pyrolysis is carried out in a hydrogen-rich atmosphere under the following conditions: (a) a temperature ranging from 450°C to 600°C; (b) a pressure equal to or greater than one atmosphere; (c) a gas residence time not exceeding two seconds; (d) a biomass particle residence time at least as long as the gas residence time; (e) a biomass particle size not exceeding 2 mm. The methane-rich product gas is then recovered. Conversion of carbon to methane of 69% has been attained using the process of the present invention.

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