Patent ID: 6521143
Filing Date: 2003-02-18
Classification: B01D,C01B

Abstract:
A process for simultaneously producing a syngas product having a H2/CO ratio of 2.5 or less and a hydrogen gas product, said process comprising the steps of:passing a feed gas comprising a hydrocarbon through a primary reformer to provide a primary effluent; diverting a portion of said effluent from said primary reformer to provide a side stream separate from a primary stream of said effluent; reacting water and carbon monoxide in said primary stream to provide an enriched primary stream having increased amounts of carbon dioxide and hydrogen therein; extracting carbon dioxide from said enriched primary stream to provide a hydrogen enriched primary stream and primary extracted carbon dioxide; processing said hydrogen enriched primary stream to provide said hydrogen gas product; feeding at least a portion of said side stream to said secondary reformer to provide a secondary reformer effluent; cooling said secondary reformer effluent to provide a cooled side stream; extracting carbon dioxide from said cooled side stream to provide said syngas product and secondary extracted carbon dioxide; and combining said primary and secondary extracted carbon dioxide with said side stream upstream of said secondary reformer to increase the amount of carbon dioxide being fed to the secondary reformer.