Patent ID: 8715380
Filing Date: 2014-05-06
Classification: B01J,C01B,C10G,C10J,C10K,Y02E,Y02P

Abstract:
1. A method for deep desulfurization of synthesis gas, the method comprising: producing a flue gas and a gasifier product synthesis gas in a dual fluidized bed loop by: introducing the gasifier product synthesis gas into a fluid bed conditioner, the fluid bed conditioner one fluidized bed reactor of a second dual fluidized bed loop; introducing the flue gas from the fluid bed combustor into a second fluid bed combustor, wherein the second fluid bed combustor is the second fluidized bed reactor of the second dual fluidized bed loop; extracting a first catalytic heat transfer stream comprising a catalytic heat transfer material and having a third temperature from the fluid bed conditioner, and introducing at least a portion of the first catalytic heat transfer stream into the second fluid bed combustor; extracting a second catalytic heat transfer stream comprising catalytic heat transfer material and having a fourth temperature greater than the third temperature from the second fluid bed combustor, and introducing at least a portion of the second catalytic heat transfer stream into the fluid bed conditioner; and extracting, from the fluid bed conditioner, a high quality synthesis gas comprising less sulfur than the gasifier product synthesis gas.