US3879180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for treating a gas current which is obtained by coal gasification
Assignee: Gutehoffnungshutte Sterkrade AG
•
Filing: 1972-12-18
•
Granted: 1975-04-22
•
Expires: 1992-12-18
Abstract
Abstract A method of treating a gas current which is obtained from coal by gasification comprises compressing the gas in several stages and prior to the entrance into a subsequent stage, cooling and separating the liquid from at least a portion of the gas and then heating the cooled and separated gas. The apparatus includes a plurality of compression stages with at least one of the stages having connections to a cooler and a water separator through which the gases pass and including a heater for treating at least the portion of the gas which passed through the cooler and separator and which is then delivered into a conduit for transferring all of the removed gas from the previous stage into a subsequent stage.
Inventors
- 👤 Jochen Hutgens
- 👤 Gunter Adomat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:52
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/04; C10B; C10B57/00; C10B57/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A METHOD OF TREATING GAS CURRENT ATTAINED FROM COAL BY GASIFICATION, COMPRISING COMPRESSING THE GAS IN SEVERAL STAGES, REMOVING THE GAS FROM ONE OF SAID STAGES AND, PRIOR TO ITS ENTRANCE INTO A SUBSEQUENT STAGE, COOLING AT LEAST A PORTION OF THE GAS AND SEPARATING THE LIQUID THEREFROM, AND COLLECTING LEAKAGE GAS FROM A SUBSEQUENT COMPRESSION STAGE AND SUBSEQUENTLY HEATING THE COOLED AND SEPARATED GAS BEFORE IT IS DELIVERED TO THE NEXT STAGE BY CONTACTING IT WITH THE LEAKAGE GAS.
Claim 2
Independent Claim
80 words
A METHOD OF TREATING GAS CURRENT ATTAINED FROM COAL BY GASIFICATION, COMPRISING COMPRESSING THE GAS IN SEVERAL STAGES, REMOVING THE GAS FROM ONE OF SAID STAGES AND, PRIOR TO ITS ENTRANCE INTO A SUBSEQUENT STAGE, COOLING AT LEAST A PORTION OF THE GAS AND SEPARATING THE LIQUID THEREFROM, AND COLLECTING LEAKAGE GAS FROM A SUBSEQUENT COMPRESSION STAGE AND SUBSEQUENTLY HEATING THE COOLED AND SEPARATED GAS BEFORE IT IS DELIVERED TO THE NEXT STAGE BY CONTACTING IT WITH THE LEAKAGE GAS.
References Cited (Backward Citations)
US1310672A
Cited
US1943116A
Cited
US2399865A
Cited
US2692849A
Cited
US2793506A
Cited
US2957318A
Cited
US3372555A
Cited
US3463088A
Cited
US3303997A
Cited
US3349571A
Cited
US3430451A
Cited
US3556749A
Cited
US3702063A
Cited
US3579308A
Cited
US3643675A
Cited
US3740163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |