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US4489047A
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Process for removing hydrogen sulphide from process gases using solid acceptors, process for cyclic regenerating the used acceptors at high temperature, as well as process for preparing acceptors, which are suitable for this process
Assignee: Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
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Filing: 1982-10-29
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Granted: 1984-12-18
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Expires: 2002-10-29
Abstract
Abstract An acceptor of MnO x or iron oxide, wherein x has a value of from 1 to 1.5, supported on a (γ)-alumina carrier which may contain silica, is used to remove hydrogen sulfide from process gases. The acceptor is regenerated with steam in a reducing atmosphere at a temperature of from 300° C. to 700° C.
Inventors
- 👤 Willem A. de Jong
- 👤 Berend J. van der Linde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:27
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/52; Y; Y10; Y10S; Y10S502/00; Y10S502/515; Y10S502/517
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
70 words
A regenerative method for removing hydrogen sulphide from process gases which comprises: (a) contacting said gases with an MnO x or iron oxide acceptor, wherein x has a value of from 1 to 1.5, and wherein said acceptor is supported on a (γ)-alumina carrier, and (b) regenerating the acceptor by contacting the acceptor with steam at a temperature of from 300° C. to 700° C., wherein said steam contains hydrogen.
Claim 2
Dependent Claim
70 words
A regenerative method for removing hydrogen sulphide from process gases which comprises: (a) contacting said gases with an MnO x or iron oxide acceptor, wherein x has a value of from 1 to 1.5, and wherein said acceptor is supported on a (γ)-alumina carrier, and (b) regenerating the acceptor by contacting the acceptor with steam at a temperature of from 300° C. to 700° C., wherein said steam contains hydrogen.
Claim 3
Dependent Claim
11 words
A method according to claim 1 wherein said carrier contains silica.
Claim 4
Dependent Claim
11 words
A method according to claim 1 wherein said acceptor is MnO.
Claim 5
Dependent Claim
11 words
A method according to claim 2 wherein said acceptor is MnO.
Claim 6
Dependent Claim
20 words
A method according to claim 1 wherein 2-20 percent of said acceptor is Mn or Fe or a combination thereof.
Claim 7
Dependent Claim
20 words
A method according to claim 2 wherein 2-20 percent of said acceptor is Mn or Fe or a combination thereof.
Claim 8
Dependent Claim
20 words
A method according to claim 1 wherein 7-10 percent of said acceptor is Mn or Fe or a combination thereof.
Claim 9
Dependent Claim
20 words
A method according to claim 2 wherein 7-10 percent of said acceptor is Mn or Fe or a combination thereof.
Claim 10
Dependent Claim
21 words
A method according to claim 1 wherein conditions for said removal include a temperature of from 300° C. to 750° C.
Claim 11
Dependent Claim
21 words
A method according to claim 2 wherein conditions for said removal include a temperature of from 300° C. to 750° C.
Claim 12
Dependent Claim
21 words
A method according to claim 1 wherein conditions for said removal include a temperature of from 400° C. to 475° C.
Claim 13
Dependent Claim
21 words
A method according to claim 2 wherein conditions for said removal include a temperature of from 400° C. to 475° C.
Claim 14
Dependent Claim
28 words
A method according to claim 1 wherein water is present and comprises up to 10 percent of the volume of a container in which said method is performed.
Claim 15
Dependent Claim
28 words
A method according to claim 2 wherein water is present and comprises up to 10 percent of the volume of a container in which said method is performed.
Claim 16
Dependent Claim
21 words
A method according to claim 1 wherein said steam is present at a temperature of from 400° C. to 575° 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) | 1987-12-18 | 1988-06-18 | 1988-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-18 | 1992-06-18 | 1992-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-18 | 1996-06-18 | 1996-12-18 | $7700.00 | Window Closed / Lapsed |