초록 ▼

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. Pyrolys

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 temperatue ranging from 500°C. to 550°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.

대표청구항 ▼

A process of hydrogasification of biomass for producing high yields of methane, said process comprising introducing biomass particles, hydrogen, particles of a catalyst that has both cracking and hydrogenation activity and heat into a reactor capable of carrying out rapid pyrolysis, mixing said biom

A process of hydrogasification of biomass for producing high yields of methane, said process comprising introducing biomass particles, hydrogen, particles of a catalyst that has both cracking and hydrogenation activity and heat into a reactor capable of carrying out rapid pyrolysis, mixing said biomass particles with said catalyst particles in said reactor in a hydrogen-rich atmosphere, carrying out said pyrolysis under the following reaction conditions: (a) a temperature ranging from substantially 450°C. to substantially 600°C.; (b) a pressure at least as high as substantially one atmosphere; (c) a gas residence time not exceeding substantially 5 seconds; (d) a biomass particle residence time at least as long as the gas residence time; (e) a biomass particle size not exceeding substantially 2 mm; and recovering methane rich product gas so formed.