US3975172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of gaseous components from scrubbing liquid
Assignee: Linde GmbH
•
Filing: 1974-03-14
•
Granted: 1976-08-17
•
Expires: 1994-03-14
Abstract
Abstract Process for the recovery of one or more components of a raw gas, absorbed by the scrubbing liquid during a physical gas scrubbing step, by expanding the laden scrubbing liquid, characterized in that the expanded, laden scrubbing liquid is stripped, before its final regeneration, with a gas consisting exclusively of one or more components of the raw gas and essentially free of the components to be recovered and to be scrubbed out.
Inventors
- 👤 Gerhard Ranke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:37
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/14; B01D53/1418; B01D53/1425; Y; Y02; Y02C; Y02C20/00; Y02C20/40
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
154 words
A process comprising the steps of (a) scrubbing raw gas with a scrubbing liquid so as to substantially free it from all components which are intended to be removed as impurities from the raw gas as well as a portion of components which are desired products, said raw gas being thereby converted into a first product gas, a part thereof being withdrawn as product; (b) further scrubbing another part of the first product gas with substantially completely regenerated scrubbing liquid, so as to free said part substantially completely from the remainder of said components desired as products in the first product gas, thus yielding a second product gas; (c) stripping resultant laden scrubbing liquid with said second product gas to obtain a laden stripping gas containing said portion of components which are desired products; and (d) subjecting resultant stripped scrubbing liquid to a final regeneration step to obtain a substantially completely regenerated scrubbing liquid.
Claim 2
Dependent Claim
154 words
A process comprising the steps of (a) scrubbing raw gas with a scrubbing liquid so as to substantially free it from all components which are intended to be removed as impurities from the raw gas as well as a portion of components which are desired products, said raw gas being thereby converted into a first product gas, a part thereof being withdrawn as product; (b) further scrubbing another part of the first product gas with substantially completely regenerated scrubbing liquid, so as to free said part substantially completely from the remainder of said components desired as products in the first product gas, thus yielding a second product gas; (c) stripping resultant laden scrubbing liquid with said second product gas to obtain a laden stripping gas containing said portion of components which are desired products; and (d) subjecting resultant stripped scrubbing liquid to a final regeneration step to obtain a substantially completely regenerated scrubbing liquid.
Claim 3
Dependent Claim
29 words
A process according to claim 1, further comprising compressing resultant laden stripping gas to the raw gas pressure and admixing resultant compressed laden stripping gas to the raw gas.
Claim 4
Dependent Claim
61 words
A process according to claim 1, said raw gas being a gas obtained from the partial oxidation of a sulfur-containing crude oil, said raw gas containing hydrogen, hydrogen sulfide; carbon dioxide, carbon monoxide, nitrogen and methane, said first product gas being a mixture of methane, hydrogen, nitrogen, and carbon oxides and said second product gas being hydrogen essentially free of methane.
Claim 5
Dependent Claim
11 words
A process according to claim 3, said scrubbing liquid being methanol.
Claim 6
Dependent Claim
11 words
A process according to claim 1, said scrubbing liquid being methanol.
Claim 7
Dependent Claim
14 words
A process according to claim 1 wherein said final regenerating step is thermal regeneration.
Claim 8
Dependent Claim
21 words
A process according to claim 1 wherein scrubbing liquid employed in step (a) is laden scrubbing liquid withdrawn from step (b).
Claim 9
Dependent Claim
23 words
A process according to claim 1 wherein said resultant laden scrubbing liquid in step (c) is laden scrubbing liquid withdrawn from step (a).
Claim 10
Dependent Claim
16 words
A process according to claim 1 wherein the laden scrubbing liquid is expanded in step (c).
Claim 11
Dependent Claim
23 words
A process according to claim 7 wherein said resultant laden scrubbing liquid in step (c) is laden scrubbing liquid withdrawn from step (a).
Claim 12
Dependent Claim
16 words
A process according to claim 10 wherein the laden scrubbing liquid is expanded in step (c).
Claim 13
Dependent Claim
14 words
A process according to claim 11 wherein said final regenerating step is thermal regeneration.
References Cited (Backward Citations)
DE832143C
Cited
US3023843A
Cited
US3201920A
Cited
US3236030A
Cited
US3492788A
Cited
US3770622A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-17 | 1980-02-16 | 1980-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-17 | 1984-02-16 | 1984-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-17 | 1988-02-16 | 1988-08-17 | $7700.00 | Window Closed / Lapsed |