Patent ID: 8021577

Claim:
A method for select product gas generation from solid carbonaceous materials comprising the steps of: inputting a feedstock solids carbonaceous material; subjecting said feedstock solids carbonaceous material to a pressurized environment; increasing a temperature within said pressurized environment to which said feedstock solids carbonaceous material is subjected; purging at least some oxygen from said pressurized environment to which said feedstock solids carbonaceous material is subjected; pyrolytically processing said feedstock solids carbonaceous material in a solid carbonaceous materials gasifier system in the substantial absence of oxygen; generating at least some contaminated select product gas in response to said step of pyrolytically processing said feedstock solids carbonaceous material; isolating contaminants from said contaminated select product gas to create scrubbed select product gas; returning at least some of said isolated contaminants within said solid carbonaceous materials gasifier system at the point of at least one selected location; reprocessing said returned isolated contaminants in said solid carbonaceous materials gasifier system; outputting said scrubbed select product gas from said solid carbonaceous materials gasifier system.