Gas separation: processes – Selective diffusion of gases – Selective diffusion of gases through substantially solid...
Patent
1998-11-04
2000-10-31
Spitzer, Robert H.
Gas separation: processes
Selective diffusion of gases
Selective diffusion of gases through substantially solid...
95118, 95139, 95143, 95288, 96 4, 96108, B01D 5322, B01D 5304
Patent
active
061396044
ABSTRACT:
A low energy cost process for the co-production of oxygen and nitrogen employing a fuel tube extending into the first oxygen selective ion transport membrane whereby fuel is introduced adjacent to the closed end and flows cocurrently with oxygen containing gas in the annulus and an oxygen selective ion transport membrane having a separator section and a reactor section. An oxygen-containing feedstock, typically air, is compressed and then contacts the cathode side of the separator section where a portion of the oxygen contained within the feedstock is transported to the anode side of the separator section and recovered as an oxygen product gas. Substantially the remainder of the oxygen contained within the feedstock is transported from the cathode side of the reactor section to the anode side and exothermically reacted with a fuel. Following the exothermic reaction, hot nitrogen rich product gas is expanded in a turbine to generate the power necessary to compress the feedstock. Expanded nitrogen rich product gas may then be recovered from the turbine exhaust.
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Gottzmann Christian Friedrich
Keskar Nitin Ramesh
Prasad Ravi
Wulf James Bragdon
Praxair Technology Inc.
Rosenblum David M.
Spitzer Robert H.
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