US4089809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regenerable sorbent and method for removing hydrogen sulfide from hot gaseous mixtures
Assignee: United States Department of Energy
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Filing: 1976-03-01
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Granted: 1978-05-16
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Expires: 1996-03-01
Abstract
Abstract Hydrogen sulfide is effectively removed from hot gaseous mixtures useful for industrial purposes by employing a solid absorbent consisting of silica-supported iron oxide in pellet form.
Inventors
- 👤 William L. Farrior, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:11
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/06; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/52; B01J23/00; B01J23/70; B01J23/74; B01J23/745
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
47 words
A solid sorbent for sorbing hydrogen sulfide from gaseous mixtures, said sorbent consisting essentially of a sintered admixture of Fe 2 O 3 and silica particulates with the Fe 2 O 3 being in the mixture in a concentration in the range of about 25-50 weight percent.
Claim 2
Dependent Claim
47 words
A solid sorbent for sorbing hydrogen sulfide from gaseous mixtures, said sorbent consisting essentially of a sintered admixture of Fe 2 O 3 and silica particulates with the Fe 2 O 3 being in the mixture in a concentration in the range of about 25-50 weight percent.
Claim 3
Dependent Claim
57 words
A solid sorbent as claimed in claim 1 with said solid sorbent being formed of Fe 2 O 3 particulates having a surface area in the range of 5 to 100 m 2 /g prior to sintering and silica particulates having a surface area in the range of 4 to 6.5 m 2 /g prior to sintering.
Claim 4
Dependent Claim
57 words
A solid sorbent as claimed in claim 2, wherein a binder selected from the group consisting of bentonite and sodium silicate is incorporated in the admixture before the sintering thereof with the bentonite being in a concentration of 1 to 3 weight percent and the sodium silicate being in a concentration of 5 to 20 ml solution.
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) | 1981-05-15 | 1981-11-14 | 1982-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-15 | 1985-11-14 | 1986-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-15 | 1989-11-14 | 1990-05-16 | $7700.00 | Window Closed / Lapsed |