Patent ID: 6793712
Filing Date: 2004-09-21
Classification: B01D,C10L,F25J

Abstract:
A process for pretreating natural gas for liquefaction, said process comprising the steps of:(a) heating a natural gas stream in a first side of a first heat exchanger; (b) downstream of the first side of the first heat exchanger, heating the natural gas stream in a first side of a second heat exchanger; (c) downstream of the first side of the second heat exchanger, removing an acid gas from the natural gas stream in an acid gas removal system; (d) downstream of the acid gas removal system, cooling the natural gas in a second side of the second heat exchanger by indirect heat exchange with the natural gas stream that is heated in step (b); (e) downstream of the second side of the second heat exchanger, removing water from the natural gas stream in a first dehydrator; and (f) downstream of the first dehydrator, cooling the natural gas stream in a second side of the first heat exchanger by indirect heat exchange with the natural gas that is heated in step (a).