Patent ID: 9255232
Filing Date: 2016-02-09
CPC Classification: B01J,C01B,C10G,C10J,C10K,F02G,Y02E,Y02P

Claim Text:
1. A method comprising: introducing a carbonaceous feedstock and a heated particulate heat transfer material into a gasifier comprising a fluidized bed, whereby at least a portion of the carbonaceous material is pyrolyzed to produce a gasification product gas comprising hydrogen and carbon monoxide, and wherein the fluidized bed comprises particulate heat transfer material fluidized by introducing a gasifier fluidization gas into the gasifier; removing, from a lower average density entrained space region of the gasifier, a gasification product gas comprising, entrained therein, char, particulate heat transfer material, and optionally unreacted carbonaceous feedstock; separating at least one solids product comprising char, particulate heat transfer material and optionally unreacted carbonaceous material from the gasification product gas, providing a particulate-reduced product gas; heating at least a portion of the at least one solids product by passing same through a combustor, thus producing a heated portion of the at least one solids product and a combustor flue gas, wherein at least a portion of the heat for heating is obtained via combustion of the char in the at least a portion of the at least one solids product; separating the heated portion of the at least one solids product from the flue gas in a combustor separator, and introducing the separated heated portion of the at least one solids product directly into a gasifier seal pot configured to prevent backflow of material from the gasifier, and directly therefrom into the gasifier, thus providing heat for pyrolysis; and subjecting at least a portion of the gasification product gas to Fischer-Tropsch synthesis, producing power from at least a portion of the gasification product gas, or both.