Method of producing pyrolysis gases from carbon-containing mater

Details Method of producing pyrolysis gases from carbon-containing mater Method of producing pyrolysis gases from carbon-containing mater

1988-05-02

1989-09-12

Kratz, Peter

Gas: heating and illuminating

Processes

Fuel mixtures

48209, 252373, C10J 384, C10K 302

Patent

active

048656259

ABSTRACT:
A gasification process of improved efficiency is disclosed. A dual bed reactor system is used in which carbon-containing feedstock materials are first treated in a gasification reactor to form pyrolysis gases. The pyrolysis gases are then directed into a catalytic reactor for the destruction of residual tars/oils in the gases. Temperatures are maintained within the catalytic reactor at a level sufficient to crack the tars/oils in the gases, while avoiding thermal breakdown of the catalysts. In order to minimize problems associated with the deposition of carbon-containing materials on the catalysts during cracking, a gaseous oxidizing agent preferably consisting of air, oxygen, steam, and/or mixtures thereof is introduced into the catalytic reactor at a high flow rate in a direction perpendicular to the longitudinal axis of the reactor. This oxidizes any carbon deposits on the catalysts, which would normally cause catalyst deactivation.

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