Gas separation: processes – Selective diffusion of gases – Selective diffusion of gases through substantially solid...
Patent
1995-06-07
1996-10-08
Spitzer, Robert
Gas separation: processes
Selective diffusion of gases
Selective diffusion of gases through substantially solid...
95288, B01D 5322
Patent
active
055627544
ABSTRACT:
Oxygen is recovered from a heated, compressed, oxygen-containing feed gas by selective permeation of oxygen through an ion transport membrane separation system and the hot, pressurized non-permeate gas is passed through an expansion turbine to recover power for compressing the feed gas and optionally generating electric power. Membrane performance and process heat recovery are enhanced by the addition of water to selected process streams. Steam raised by process heat is used to sweep the permeate side of the membrane to increase the oxygen permeation rate. The injection of partially or fully vaporized water into the expansion turbine inlet gas recovers process heat and increases mass flow to the turbine.
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Agrawal Rakesh
Brengel David D.
Foster Edward P.
Kang Doohee
Russek Steven L.
Air Products and Chemicals Inc.
Fernbacher John M.
Spitzer Robert
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