Patent ID: 7374742
Filing Date: 2008-05-20
Classification: B01D,C01B,C10K,C10L,Y02E

Abstract:
1. A method for producing a sweet gas stream from a sour gas stream, wherein the sweet gas stream comprises a decreased mole fraction of a sulfur species and an increased mole fraction of a fuel species in relation to the sour gas stream, said method comprising: (a) subjecting the sour gas stream to a sulfur recovery process, thus producing a sweet gas stream, without first subjecting the sour gas stream to a sulfur species removal process, said sulfur recovery process comprising a catalyst which does not comprise activated carbon, wherein said sulfur recovery process is a sub-dewpoint Claus process conducted at a pressure of between 10 atm and 110 atm and at a temperature of between about 300° F. and about 500° F., wherein the sulfur recovery process converts H