Patent ID: 8241523
Filing Date: 2012-08-14
Classification: B01J,C01B,C10G,C10J,C10K,Y02E,Y02P

Abstract:
1. A method for producing synthesis gas, the method comprising: introducing a low quality gas comprising synthesis gas and a first percentage of non-synthesis gas components into a fluid bed conditioner operated at a conditioning temperature, wherein the fluid bed conditioner is one fluid bed of a dual fluidized bed loop and is configured to convert at least a portion of said non-synthesis gas components into synthesis gas components; extracting a first catalytic heat transfer stream comprising a catalytic heat transfer material and having a first temperature from the fluid bed conditioner and introducing at least a portion of the first catalytic heat transfer stream and a flue gas into a fluid bed combustor, wherein the fluid bed combustor is a second fluid bed of the dual fluidized bed loop, is configured to regenerate the catalyst via combustion at a combustion temperature, and is operated at less than 1.1 times stoichiometric air; extracting a second catalytic heat transfer stream comprising catalytic heat transfer material and having a second temperature from the fluid bed combustor and introducing at least a portion of the second catalytic heat transfer stream into the fluid bed conditioner; and extracting a high quality synthesis gas comprising a second percentage of non-synthesis gas components from the fluid bed conditioner, wherein the second percentage is less than the first percentage.