EP0748648A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method for producing oxygen and generating power using a solid electrolyte membrane integrated with a gas turbine
Assignee: Praxair Technology Inc
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Filing: 1996-06-13
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Granted: —
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Expires: 2016-06-13
Abstract
Abstract A compressed, oxygen-containing gas stream is combusted and then contacted with a solid electrolyte membrane to produce an oxygen-depleted, compressed gas stream and product oxygen. Preferably, the oxygen-depleted gas stream is further combusted, used to produce steam, and/or used to preheat the oxygen-containing gas stream prior to expansion in a gas turbine.
Inventors
- 👤 Ravi Prasad
- 👤 Christian Friedrich Gottzmann
- 👤 Raymond Francis Drnevich
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 17:26
CPC Classifications
C; C01; C01B; C01B13/00; C01B13/02; C01B13/0229; C01B13/0248; C01B13/0251; B; B01; B01D; B01D53/00; B01D53/22; B01D53/32; B01D53/326; C01B2210/00; C01B2210/0043; C01B2210/0046
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
101 words
A method for producing oxygen and generating power, said method comprising the steps of: (a) combusting a compressed, oxygen-containing gas stream in a first combustor to raise the temperature of the gas stream; (b) contacting the combusted, compressed, oxygen-containing gas stream with a solid electrolyte membrane to produce an oxygen-depleted, compressed gas stream and product oxygen therefrom; (c) combusting the oxygen-depleted, compressed gas stream in a second combustor to raise the temperature of that stream; and (d) expanding in a gas turbine the combusted, oxygen-depleted, compressed gas stream recovered from the solid electrolyte membrane and the second combustor, thereby generating power.
Claim 2
Dependent Claim
19 words
The method of claim 1 wherein, prior to step (d), heat is recovered from the oxygen-depleted, compressed gas stream.
Claim 3
Dependent Claim
25 words
The method of claim 1 further comprising obtaining an expanded, oxygen-depleted gas stream from the turbine and recovering heat from the expanded, oxygen-depleted gas stream.
Claim 4
Dependent Claim
36 words
The method of claim 1 wherein a portion of the compressed, oxygen-containing gas stream bypasses the first combustor and is mixed with the combusted, compressed, oxygen-containing gas stream prior to contact with the solid electrolyte membrane.
Claim 5
Dependent Claim
49 words
The method of claim 1 wherein a portion of the compressed, oxygen-containing gas stream of step (a) bypasses the first combustor and the solid electrolyte membrane and is combusted in the second combustor together with the oxygen-depleted, compressed gas stream recovered from the solid electrolyte membrane of step (b).
Claim 6
Dependent Claim
34 words
The method of claim 5 wherein, prior to being combusted in the second combustor, the bypassing portion of the compressed, oxygen-containing gas stream passes through a flow control device to adjust its flow rate.
Claim 7
Dependent Claim
29 words
The method of claim 1 wherein a portion of the oxygen-depleted, compressed gas stream from step (b) bypasses the second combustor and is introduced directly into the gas turbine.
Claim 8
Dependent Claim
49 words
The method of claim 1 wherein a portion of the combusted, compressed, oxygen-containing gas stream of step (a) bypasses the solid electrolyte membrane and is combined prior to delivery to the second combustor with at least a portion of the compressed, oxygen-containing gas stream which bypasses the first combustor.
Claim 9
Independent Claim
90 words
A method for producing oxygen and generating steam, said method comprising the steps of: combusting a compressed, oxygen-containing gas stream in a first combustor; contacting the combusted, compressed, oxygen-containing gas stream with a solid electrolyte membrane to produce an oxygen-depleted, compressed gas stream and product oxygen therefrom; directing at least a portion of the product oxygen through a heat exchanger to generate steam; and expanding the oxygen-depleted, compressed gas stream recovered from the solid electrolyte membrane in a turbine to drive a compressor to obtain the compressed oxygen-containing gas stream.
References Cited (Backward Citations)
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