B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
183/2
B01D 53/22 (2006.01) C07C 7/04 (2006.01)
Patent
CA 1062176
ABSTRACT A method for sweetening sour gas containing hydrogen sulfide and/or carbon dioxide sour gas components by delivering the sour gas as a feed mixture to a semi-permeable membrane being highly selective for such sour gas components, collecting permeated sour gas components, and then collecting the rejected, sweetened methane gas. In preferred form, the feed sour mixture is delivered to an anisotropic membrane having a separation factor in excess of about 20, having a high solubility parameter of greater than about 9, and having a permeation constant sufficient to assure efficient sweetening. In another preferred form, the sour feed gas mixture is delivered at a feed pressure which is substantially greater than the permeate pressure at which the permeated sour gas components are collected. The rejected sweet methane gas has at least about 99% concentration of methane and higher fuel components with less than 1% carbon dioxide and less than about 20 ppm of hydrogen sulfide.
214264
Klass Donald L.
Landahl Carl D.
LandOfFree
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