Refrigeration – Cryogenic treatment of gas or gas mixture – Separation of gas mixture
Patent
1998-05-22
1999-11-09
Capossela, Ronald
Refrigeration
Cryogenic treatment of gas or gas mixture
Separation of gas mixture
62915, 60 3912, F25J 300
Patent
active
059791837
ABSTRACT:
Oxygen is produced by compressing air to provide a first and a second pressurized air stream, separating the first pressurized air stream into an oxygen-rich product stream and a nitrogen-rich byproduct stream, and combining the nitrogen-rich byproduct stream with the second pressurized air stream. The resulting combined stream is heated by indirect heat exchange with a hot process stream and is work expanded in a gas turbine expander. At least a portion of the expander shaft work is utilized for the air compression step. Fuel is combusted with the expander discharge stream to provide the hot process stream for heating the combined stream prior to expansion. The use of this integrated indirectly-fired gas turbine to provide pressurized feed air for the air separation system improves the availability and reliability of the integrated system compared with conventional directly-fired gas turbine systems.
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Smith Arthur Ramsden
Woodward Donald Winston
Air Products and Chemicals Inc.
Capossela Ronald
Fernbacher John M.
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