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Patent US2772146A successfully refreshed from Google Patents.
US2772146A
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Process for the recovery of elementary sulfur from gases containing hydrogen sulfide
Assignee: Individual
•
Filing: 1952-09-29
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Granted: 1956-11-27
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Expires: 1972-09-29
Abstract
No abstract record available.
Inventors
- 👤 Pippig Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:07
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/08; C10K1/10; C10K1/12; C10K1/128; C01; C01B; C01B17/00; C01B17/02; C01B17/04; C01B17/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
IN THE CONTINUOUS RECOVERY OF ELEMENTARY SULFUR FROM A GAS CONTAINING HYDROGEN SULFIDE BY A PROCESS INVOLVING THE STEPS OF ABSORBING HYDROGEN SULFIDE FROM THE GAS IN AN ALKALINE WASHING LIQUID INCLUDING A FREE OXYGEN CONTAINING OXIDIZING AGENT FOR HYDROGEN SULFIDE BY WASHING SAID GAS WITH SAID WASHING LIQUID IN A WASHING STAGE THEREAFTER TREATING SAID WASHING LIQUID WITH OXYGEN IN AN OXIDIZING STAGE TO OXIDIZE THE ABSORBED HYDROGEN SULFIDE TO ELEMENTARY SULFUR, REMOVING SAID SULFUR FROM THE WASHING LIQUID AND RECYCLING THE LATTER INTO SAID WASHING STAGE IN ORDER TO ABSORB HYDROGEN SULFIDE FROM ANOTHER PORTION OF GAS, THE IMPROVEMENT WHICH COMPRISES MAINTAINING THE HYDROGEN SULFIDE-ENRICHED WASHING LIQUID WITHIN THE OXIDIZING STAGE AT A TEMPERATURE NOT IN EXCESS OF ABOUT 25* C. ARTIFICIAL COOLING OF SAID ENRICHED LIQUID.
Claim 2
Dependent Claim
129 words
IN THE CONTINUOUS RECOVERY OF ELEMENTARY SULFUR FROM A GAS CONTAINING HYDROGEN SULFIDE BY A PROCESS INVOLVING THE STEPS OF ABSORBING HYDROGEN SULFIDE FROM THE GAS IN AN ALKALINE WASHING LIQUID INCLUDING A FREE OXYGEN CONTAINING OXIDIZING AGENT FOR HYDROGEN SULFIDE BY WASHING SAID GAS WITH SAID WASHING LIQUID IN A WASHING STAGE THEREAFTER TREATING SAID WASHING LIQUID WITH OXYGEN IN AN OXIDIZING STAGE TO OXIDIZE THE ABSORBED HYDROGEN SULFIDE TO ELEMENTARY SULFUR, REMOVING SAID SULFUR FROM THE WASHING LIQUID AND RECYCLING THE LATTER INTO SAID WASHING STAGE IN ORDER TO ABSORB HYDROGEN SULFIDE FROM ANOTHER PORTION OF GAS, THE IMPROVEMENT WHICH COMPRISES MAINTAINING THE HYDROGEN SULFIDE-ENRICHED WASHING LIQUID WITHIN THE OXIDIZING STAGE AT A TEMPERATURE NOT IN EXCESS OF ABOUT 25* C. ARTIFICIAL COOLING OF SAID ENRICHED LIQUID.
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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) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |