US3892677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for regeneration of sulfur oxide acceptors
Assignee: Shell USA Inc
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Filing: 1969-07-15
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Granted: 1975-07-01
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Expires: 1989-07-15
Abstract
Abstract A process is disclosed for the regeneration of sulfur dioxideloaded solid, metal containing acceptor obtained by contacting a sulfur oxide- and oxygen-containing gas mixture with the solid acceptor by contacting the loaded acceptor with a reducing gas containing hydrocarbon and an inert diluent, such as steam, thereby reducing the amount of hydrocarbon deposited on the acceptor during regeneration.
Inventors
- 👤 Jaap E Naber
- 👤 Frits M Dautzenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:54
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/50; B01D53/508; C; C01; C01B; C01B17/00; C01B17/48; C01B17/50; C01B17/60; Y; Y10; Y10S; Y10S502/00; Y10S502/515; Y10S502/517
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
93 words
A PROCESS FOR THE REGENERATION OF A SULFUR OXIDE-LOADED ACCEPTOR OBTAINED BY CONTACTING A SULFUR OXIDE- AND OXYGENCONTAINING GAS MIXTURE WITH A SOLID ACCEPTOR OF A SOLID REFRACTORY CARRIER MATERIAL COMPOSITED WITH A METAL OR A METAL COMPOUND CAPABLE OF TAKING UP SULFUR OXIDES, WHICH COMPRISES TREATING SAID LOADED ACCEPTOR AT A TEMPERATURE OF 200* TO 500*C WITH A REDUCINGGAS COMPRISING AN INHERT DILUENT AND A HYDROCARBON IN A VOLUME ATIO OF 0.2:1 TO 20:1 SAID HYDROCARBON HAVING AT LEAST THREE CABON ATOMS PER MOLECULE, AND REMOVING A SILFUR DIOXIDE-CONTAINING SPENT REDUCING GAS.
Claim 2
Dependent Claim
93 words
A PROCESS FOR THE REGENERATION OF A SULFUR OXIDE-LOADED ACCEPTOR OBTAINED BY CONTACTING A SULFUR OXIDE- AND OXYGENCONTAINING GAS MIXTURE WITH A SOLID ACCEPTOR OF A SOLID REFRACTORY CARRIER MATERIAL COMPOSITED WITH A METAL OR A METAL COMPOUND CAPABLE OF TAKING UP SULFUR OXIDES, WHICH COMPRISES TREATING SAID LOADED ACCEPTOR AT A TEMPERATURE OF 200* TO 500*C WITH A REDUCINGGAS COMPRISING AN INHERT DILUENT AND A HYDROCARBON IN A VOLUME ATIO OF 0.2:1 TO 20:1 SAID HYDROCARBON HAVING AT LEAST THREE CABON ATOMS PER MOLECULE, AND REMOVING A SILFUR DIOXIDE-CONTAINING SPENT REDUCING GAS.
Claim 3
Dependent Claim
17 words
THE PROCESS OF CLAIM 1 IN WHICH THE METAL OR METAL COMPOUND IS COPPER OR COPPER OXIDE.
Claim 4
Dependent Claim
27 words
THE PROCESS OF CLAIM 1 IN WHICH SAID SOLID CARRIER MATERIAL IS COMPOSITD WITH A VANADIUM COMPOUND AND AN ALKAL COMPOUND CAPABLE OF TAKING UP SULFUR OXIDES.
Claim 5
Dependent Claim
27 words
The process of claim 1 in which the reducing gas comprises inert diluent and hydrocarbon in a volume ratio in the range of from 10:1 to 0.5:1.
Claim 6
Dependent Claim
27 words
The process of claim 1 in which the reducing gas comprises inert diluent and hydrocarbon in a volume ratio in the range of from 6:1 to 1:1.
Claim 7
Dependent Claim
12 words
THE PROCESS OF CLAIM 1 IN WHICH SAID INERT DILUENT IS STEAM.
Claim 8
Dependent Claim
20 words
The process of claim 1 in which the reducing gas contains hydrocarbon with at least five carbon atoms per molecule.
Claim 9
Dependent Claim
27 words
The process of claim 1 in which the reducing gas contains hydrocarbon having a boiling point at atmospheric pressure in the range of from 40* to 200*C.
Claim 10
Dependent Claim
28 words
The process of claim 1 in which said spent reducing gas is cooled until a hydrocarbon condensate is formed, which condensate is evaporated and re-used in the process.
Claim 11
Dependent Claim
23 words
The process of claim 1 in which the loaded acceptor is treated at a temperature in the range of from 350* to 450*C.
Claim 12
Dependent Claim
22 words
The process of claim 5 wherein the inert diluent is steam and the hydrocarbon has at least five carbon atoms per molecule.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |