US4145192A
Expired / Lapsed
US
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Method of processing technical gases
Assignee: Individual
•
Filing: 1977-02-23
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Granted: 1979-03-20
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Expires: 1997-02-23
Abstract
Abstract A method of processing technical gases such as natural or synthetic gases containing water vapor, acidic and neutral sulfur compounds and/or higher hydrocarbons which comprises treating said gas with an anhydrous solvent containing N-methyl-ε-caprolactam, an alkanolamine and a glycol to simultaneously remove said sulfur compounds, hydrocarbons and water vapor.
Inventors
- 👤 Hans Beise
- 👤 Burkhard Schlicht
- 👤 Manfred Thiele
- 👤 Manfred Gross
- 👤 Hans-Peter Minak
- 👤 Manfred Schingnitz
- 👤 Klaus Wehner
- 👤 Werner Burk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:39
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/08; C10K1/16; B; B01; B01D; B01D53/00; B01D53/14; B01D53/1493; C07; C07C; C07C7/00; C07C7/11
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
45 words
A method of processing natural or synthetic gases containing water vapor, acidic and neutral sulphur compounds and higher hydrocarbons, which compises treating said gas with an anhydrous solvent containing N-methyl-ε-caprolactam, an alkanolamine and a glycol to simultaneously remove said sulphur compounds; hydrocarbons and water vapor.
Claim 2
Independent Claim
45 words
A method of processing natural or synthetic gases containing water vapor, acidic and neutral sulphur compounds and higher hydrocarbons, which compises treating said gas with an anhydrous solvent containing N-methyl-ε-caprolactam, an alkanolamine and a glycol to simultaneously remove said sulphur compounds; hydrocarbons and water vapor.
Claim 3
Dependent Claim
28 words
The method as in claim 1, wherein the glycol content constitutes about 5% to 60% by weight, and the alkanolamine content constitutes about 0 to 30% by weight.
Claim 4
Dependent Claim
21 words
The method as in claim 1, wherein the glycol is selected from the class consisting of di-ethylene glycol and tri-ethylene glycol.
Claim 5
Dependent Claim
25 words
A method in accordance with claim 1, wherein said anhydrous solvent is substantially completely regenerated for reuse in the processing of natural and synthetic gases.
Claim 6
Dependent Claim
16 words
A method as in claim 1, wherein the N-methyl-ε-caprolactam constitutes the major constituent of the solvent.
Claim 7
Dependent Claim
17 words
A method in accordance with claim 5, wherein the N-methyl-ε-caprolactam constitutes about 60% to 90% by weight.
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) | 1982-03-19 | 1982-09-18 | 1983-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-19 | 1986-09-18 | 1987-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-19 | 1990-09-18 | 1991-03-20 | $7700.00 | Window Closed / Lapsed |