Recovery of CO2 and H2 from PSA offgas in an H2 plant
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United States of America Patent
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-
Apr 22, 2003
Grant Date -
N/A
app pub date -
Jun 25, 2001
filing date -
Nov 10, 1998
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A gas separation apparatus and process has a first pressure swing adsorption (PSA) unit (110) receiving feed gas (112), which comprises a first and a second component. First PSA unit (110) produces first product gas (114) pre-dominantly containing the first component, and first off gas (116) containing at least some of the first component and second component. Compressor (120) is coupled to first PSA unit (110) to compress first off gas (116) to form compressed off gas (126), which is passed downstream to absorber unit (130), which employs a solvent to remove at least part of the second component from compressed off gas (126), forming an enriched compressed off gas (136B). Second PSA unit (140) receives enriched compressed off gas (136B) and produces second product gas (142) which predominantly contains the first component and a second off gas that is sent to waste or reformer burner (150).
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Patent Citation Ranking
- 25 Citation Count
- B01D Class
- 79.79 % this patent is cited more than
- 22 Age