B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/22 (2006.01) B01D 53/32 (2006.01) C01B 13/02 (2006.01) C10J 3/00 (2006.01) F02C 1/00 (2006.01) F02C 1/04 (2006.01)
Patent
CA 2254245
A process for producing a gas stream containing oxygen and steam to feed a coal gasifier or other downstream process by compressing and heating a feed gas stream, and separating the heated feed gas stream into an oxygen-depleted gas stream on a retentate side of an ion transport membrane and an oxygen-containing gas stream on a permeate side. The permeate side is purged with a purge gas stream containing steam to produce a gas stream containing oxygen and steam, and at least a portion of the gas stream containing oxygen and steam is fed to the coal gasifier after blending with a pure oxygen stream recovered from the remaining portion of the purge stream or by a parallel nonpurged ion transport separator in the system to achieve the appropriate steam-to-oxygen ratio for the downstream process.
Gottzmann Christian Friedrich
Keskar Nitin Ramesh
Prasad Ravi
Praxair Technology Inc.
Sim & Mcburney
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