US4241033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the separation of sulfur oxides from a gaseous mixture containing sulfur oxides and oxygen
Assignee: Honeywell UOP LLC
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Filing: 1979-02-01
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Granted: 1980-12-23
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Expires: 1999-02-01
Abstract
Abstract An improved process for the separation of sulfur oxides from a gaseous mixture containing sulfur oxides and oxygen is disclosed. The gaseous mixture is contacted with a solid sulfur oxide acceptor comprising copper, copper oxide, or a mixture thereof dispersed on a carrier material in combination with a platinum group metal component and a component selected from the group consisting of rhenium, germanium and tin.
Inventors
- 👤 Edward A. Ginger
- 👤 Armand J. DERosset
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:09
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/74; B01D53/86; B01D53/8603; B01D53/8609
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
133 words
In a process for the separation of inorganic sulfur oxides by oxidation of said inorganic sulfur oxides from a gaseous mixture containing said inorganic sulfur oxides and oxygen in which said gaseous mixture is contacted with a solid sulfur oxides acceptor comprising copper, copper oxide or a mixture thereof dispersed on a carrier material at a temperature of from about 150° C. to about 450° C. and in which said acceptor is regenerated with a reducing gas, the improvement which comprises the addition to said carrier material of about 0.01 to about 1.0 wt.% of said solid acceptor of a platinum group metal or an oxide thereof and a component of about 0.01 to about 1.0 wt.% of said solid acceptor selected from the group consisting of germanium, rhenium, tin and oxides thereof.
Claim 2
Dependent Claim
133 words
In a process for the separation of inorganic sulfur oxides by oxidation of said inorganic sulfur oxides from a gaseous mixture containing said inorganic sulfur oxides and oxygen in which said gaseous mixture is contacted with a solid sulfur oxides acceptor comprising copper, copper oxide or a mixture thereof dispersed on a carrier material at a temperature of from about 150° C. to about 450° C. and in which said acceptor is regenerated with a reducing gas, the improvement which comprises the addition to said carrier material of about 0.01 to about 1.0 wt.% of said solid acceptor of a platinum group metal or an oxide thereof and a component of about 0.01 to about 1.0 wt.% of said solid acceptor selected from the group consisting of germanium, rhenium, tin and oxides thereof.
Claim 3
Dependent Claim
15 words
The improvement of claim 1 further characterized in that said platinum group metal is platinum.
Claim 4
Dependent Claim
15 words
The improvement of claim 1 further characterized in that said platinum group metal is palladium.
Claim 5
Dependent Claim
19 words
The improvement of claim 1 further characterized in that said platinum group metal is platinum in combination with palladium.
Claim 6
Dependent Claim
14 words
The improvement of claim 1 further characterized in that said selected component is germanium.
Claim 7
Dependent Claim
14 words
The improvement of claim 1 further characterized in that said selected component is rhenium.
Claim 8
Dependent Claim
14 words
The improvement of claim 1 further characterized in that said selected component is tin.
Claim 9
Dependent Claim
27 words
The improvement of claim 1 further characterized in that said carrier material is alumina having a surface area of at least about 50 square meters per gram.
Claim 10
Dependent Claim
15 words
The improvement of claim 1 further characterized in that said solid carrier material is gamma-alumina.
Claim 11
Dependent Claim
17 words
The improvement of claim 1 further characterized in that said reducing gas comprises hydrogen and carbon monoxide.
Claim 12
Dependent Claim
61 words
The improvement of claim 1 further characterized in that said sulfur dioxide-loaded acceptor is regenerated by heating the same in contact with a reducing gas comprising carbon monoxide and hydrogen in a mole ratio of from about 0.5:1 to about 1.5:1 and from about 50 to about 90 vol.% steam at a temperature of from about 350° to about 450° C.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-23 | 1984-06-23 | 1984-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-23 | 1988-06-23 | 1988-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-23 | 1992-06-23 | 1992-12-23 | $7700.00 | Window Closed / Lapsed |