Patent ID: 8039519
Filing Date: 2011-10-18
Classification: C01B,C07C,C10G,C10L,Y02P

Abstract:
1. A process for producing SNG from a fresh syngas feedstock, said process comprising at least the steps of: reacting said fresh syngas into a methanation section comprising at least a first adiabatic reactor and at least one further adiabatic reactor connected in series, so that each of said at least one further reactor(s) is fed with a gas stream taken from the previous reactor of the methanation section; feeding said fresh syngas feedstock in parallel to each of said reactors; and re-circulating at least a portion of the reacted gas as input gas to at least one of said reactors, wherein at least a portion of a reacted gas stream taken from said first reactor is used as a re-circulated gas to dilute the fresh syngas feedstock stream fed to said first reactor, obtaining a diluted gas stream at the inlet of said first reactor.