Patent ID: 8769961
Filing Date: 2014-07-08
Classification: B01J,C01B,F02C,Y02E,Y02P

Abstract:
1. A method for producing fuel gas mixture comprising; exothermically reacting a first portion of a hydrocarbon feed stream with steam, an oxidant gas comprising molecular oxygen to produce an exothermically generated syn-gas product, or a combination of the steam and the oxidant gas; endothermically reforming a second portion of the hydrocarbon feed stream with steam over a catalyst in a heat exchange reformer to produce an endothermically-reformed syn-gas product, wherein at least a portion of heat used in generation of the endothermically-reformed syn-gas product is obtained by recovering heat from the exothermically-generated syn-gas product and the endothermically reformed syn-gas product; cooling a combination of the endothermically-reformed syn-gas product and the exothermically-generated syn-gas product to generate a cooled syn-gas stream; reducing a pressure of the cooled syn-gas stream in a power producing expansion turbine to the to generate a lower-pressure stream having a pressure for a power producing gas turbine; catalytically reacting the lower-pressure syngas in one or more catalytic carbon monoxide shift reactors to generate a combined stream including additional hydrogen (H cooling the combined stream to near ambient temperature in a multipassage multi stream plate-fin heat exchanger which heats water for steam production for the syn-gas generation system and preheats fuel gas product and evaporates water for mixing with the fuel gas product; removing CO generating oxygen and nitrogen in an air separation unit which is supplied with air produced from air compressors driven by a first gas turbine; mixing at least part of the nitrogen from the air separation unit with the CO utilizing at least part of the heat in the first gas turbine exhaust, preheating fuel plus oxygen plus steam feeds to the syn-gas generation system.