Gas separation: processes – Selective diffusion of gases – Selective diffusion of gases through substantially solid...
Patent
1992-09-01
1993-08-31
Spitzer, Robert
Gas separation: processes
Selective diffusion of gases
Selective diffusion of gases through substantially solid...
505 1, 505701, 505778, 505785, 96 4, B01D 5322, B01D 7102
Patent
active
052404730
ABSTRACT:
This invention relates to a process for restoring permeance of an oxygen-permeable ion transport membrane utilized to recover oxygen from an oxygen-containing gaseous mixture which contains water, carbon dioxide or volatile hydrocarbons. The process utilizes a class of ion transport membranes formed from multicomponent metallic oxides wherein permeance of such membranes had been believed to be permanently degraded by water and the like under conventional process operating temperatures. This invention provides a continuous process for restoring oxygen permeance of such membranes caused by deleterious interaction between the membrane and components such as carbon dioxide, water or hydrocarbons at elevated process temperatures.
REFERENCES:
patent: 5108465 (1992-04-01), Bauer et al.
patent: 5162301 (1992-11-01), Reich et al.
patent: 5169415 (1992-12-01), Roettger et al.
E. A. Cooper, et al. J. Mater. Res. 6 (1991) 1393.
Y. Gao, et al., J. Meter. Res. 5 (1990) 1363.
Carolan Michael F.
Dyer Paul N.
LaBar, Sr. James M.
Thorogood Robert M.
Air Products and Chemicals Inc.
Gourley Keith D.
Marsh William F.
Simmons James C.
Spitzer Robert
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