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Patent US2842423A successfully refreshed from Google Patents.
US2842423A
Expired / Lapsed
US
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Separation of acid gases from coal carbonization gases
Assignee: Individual
•
Filing: 1955-04-13
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Granted: 1958-07-08
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Expires: 1975-04-13
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Gollmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:54
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/52; B01D53/526; C; C01; C01B; C01B17/00; C01B17/16; C01B17/167; C10; C10K; C10K1/00; C10K1/08; C10K1/10; C10K1/12; C10K1/122
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A PROCESS FOR SEPARATION AND RECOVERY OF HYDROGEN SULFIDE, AND THE LIKE, FROM COALS CARBONIZATION GAS COMPRISING: SCRUBBING THE COAL CARBONIZATION GAS WITH AN ALKALINE AQUEOUS ABSORBENT AND ABSORBING HYDROGEN SULFIDE THEREFROM; REMOVING FOULED ABSORBENT CONTAINING THE DISSOLVED HYDROGEN SULFIDE FROM THE ABSORPTION ZONE AND FLOWING THIS FOULED ABSORBENT THROUGH AN ACTIFICATION ZONE UNDR SUBATMOSPHERIC PRESSURE; INJECTING STEAM THROUGH JET EVACUATING MEANS IN COMMUNICATION WITH SAID ACTIFICATION ZONE TO MAINTAIN SAID SUBATMOSPHERIC PRESSURE, WHEREBY THE TENDENCY OF THE VAPORS FROM SAID ACTIFICATION ZONE TO FORM HARD POLYMERS IN THE PROCESS EQUIPMENT IS SUBSTANTIALLY ELIMINATED, PRODUCING WITHIN SAID EVACUAT-
Claim 2
Dependent Claim
98 words
A PROCESS FOR SEPARATION AND RECOVERY OF HYDROGEN SULFIDE, AND THE LIKE, FROM COALS CARBONIZATION GAS COMPRISING: SCRUBBING THE COAL CARBONIZATION GAS WITH AN ALKALINE AQUEOUS ABSORBENT AND ABSORBING HYDROGEN SULFIDE THEREFROM; REMOVING FOULED ABSORBENT CONTAINING THE DISSOLVED HYDROGEN SULFIDE FROM THE ABSORPTION ZONE AND FLOWING THIS FOULED ABSORBENT THROUGH AN ACTIFICATION ZONE UNDR SUBATMOSPHERIC PRESSURE; INJECTING STEAM THROUGH JET EVACUATING MEANS IN COMMUNICATION WITH SAID ACTIFICATION ZONE TO MAINTAIN SAID SUBATMOSPHERIC PRESSURE, WHEREBY THE TENDENCY OF THE VAPORS FROM SAID ACTIFICATION ZONE TO FORM HARD POLYMERS IN THE PROCESS EQUIPMENT IS SUBSTANTIALLY ELIMINATED, PRODUCING WITHIN SAID EVACUAT-
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) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |