Patent ID: 8975303
Filing Date: 2015-03-10
Classification: C01B,C07C,C10G,C10L,Y02P

Abstract:
1. A method comprising: providing steam and a first fraction of synthesis gas to a shift reactor, wherein a shift reaction occurs to produce a shift reaction gas; providing the shift reaction gas to a first methanation reactor, wherein a methanation reaction occurs to produce a first methanation reaction gas; providing the first methanation reaction gas to at least one second methanation reactor; providing a flow of synthesis gas that has not been through the shift reactor to the second methanation reactor, wherein a methanation reaction occurs to produce a second methanation reaction gas; removing the second methanation reaction gas from each of the second methanation reactors through an outlet, wherein the flowrate of the synthesis gas provided to each second methanation reactor is adjusted as a function of the temperature of the second methanation reaction gas flow detected at the outlet of the same methanation reactor; and adjusting the amount of steam provided to the shift reactor as a function of the temperature of the first methanation reaction gas flow detected at an outlet of the first methanation reactor.