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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
•
Filing: 1979-02-01
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Granted: 1980-12-23
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Expires: 1999-02-01
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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.

References Cited (Backward Citations)

US3501897A Cited
US3778501A Cited
US3794588A Cited
US3816597A Cited
US3864451A Cited
US4117082A Cited
US3981825A Cited
US3972829A Cited
US3998759A Cited

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

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