Patent ID: 7263858
Filing Date: 2007-09-04
Classification: C01B,C01C,C01P,C07C,F25J,Y02P,Y10S

Abstract:
1. A method for producing a purified liquid stream comprising: providing a feed stream source; introducing under pressure a feed stream from the source to a purification vessel; supplying heat to the feed stream by heat exchange with a compressed refrigerant vapor stream in a first heat exchanger; distilling the feed stream to form a purified vapor; condensing the purified vapor to form purified liquid by heat exchange with a refrigerant liquid stream in a second heat exchanger, wherein the refrigerant liquid stream and the compressed refrigerant vapor stream are provided in a refrigerant flow network comprising the first heat exchanger, the second heat exchanger and a third heat exchanger; removing heat from the refrigerant flow network using the third heat exchanger; and withdrawing the purified liquid stream from the purification vessel.