Oxygen recovery from turbine exhaust using solid electrolyte membrane
AssigneeAir Products and Chemicals, Inc.
InventorsMichael S. Chen, William P. Hegarty, William A. Steyert, deceased, by Lila O. Steyer, executrix
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Abstract
A process is provided for extracting high purity oxygen from a gas generator turbine exhaust stream by passing the turbine exhaust over the feed side of solid electrolyte membrane selective to the permeation of oxygen over other components of the exhaust stream to separate the oxygen from the exhaust stream, and removing the oxygen product stream from the permeate side of the membrane. The reject exhaust stream is then passed through a power generating turbine to recover net power.
Claims18
A process for oxygen coproduction and net power generation, comprising:
- (a) combusting a fuel with air to produce a combustion product stream,
- (b) expanding the combustion product stream through a turbine of a gas generator,
- (c) recovering oxygen from a resulting about 850.degree. to about 1800.degree. F. temperature and about 0.2 to about 100 psig pressure exhaust stream from said gas generator turbine which stream contains from about 5 to about 18% by volume of oxygen, which recovery comprises passing the exhaust stream over a feed side of a solid electrolyte membrane selective to the permeation of oxygen over other components of the stream to separate oxygen from the exhaust stream and removing the oxygen from the permeate side of the membrane, and
- (d) then further expanding the exhaust stream through a power generating turbine to recover net power.
Dependencies are inferred from the claim text.