Patent ID: 8043390

Claim:
An apparatus for the controlled gasification of carbon containing feeds such as biomass, comprising: an upper gasification chamber having an inlet to receive a carbon-containing feed; a lower reforming chamber having an outlet to provide an output comprising syngas, said syngas comprising carbon monoxide and molecular hydrogen; a grate disposed between said upper gasification chamber and said lower reforming chamber, said grate having a plurality of openings, said openings being small enough to allow for the formation of a bed of embers and to prevent larger embers from passing between said chambers, said openings also being large enough to allow gases and ash particles to pass between said chambers; a first plurality of injectors to supply at least one of an oxidant or steam to the upper chamber; and a second plurality of injectors to supply at least one of an oxidant or steam to the lower chamber; the first plurality of injectors and the second plurality of injectors being independently controllable to provide for independent temperature control of said chambers.