Process for treating acid gas in staged furnaces with inter-stage heat recovery
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United States of America Patent
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Apr 13, 2010
Grant Date -
Sep 10, 2009
app pub date -
Mar 7, 2008
filing date -
Mar 7, 2008
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Abstract
A process for treating acid gas comprising hydrogen sulfide comprises introducing a first acid gas into a reducing furnace to produce a first oxidized gas stream, cooling the first oxidized gas stream in a first heat recovery system, introducing the cooled gas stream into an oxidizing furnace to produce a second oxidized gas stream and cooling the second oxidized gas stream in a second heat recovery system. The acid gas is preferably produced in a refinery after treatment of sour gas or sour water. Spent acid may be fed into oxidizing furnace as part of a sulfuric acid recovery process. The spent acid can be spent sulfuric acid from a sulfuric acid alkylation process.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- E. I. DU PONT DE NEMOURS AND COMPANY
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Chu, Luis Alberto | 1642 Flint Hill Rd. | 6 | 115 |
Hartstein, Eugene F | 9 Verbena Dr. | 5 | 18 |
Tekie, Zeru Berhane | 21 Norwegian Wood Dr. | 3 | 30 |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
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