Patent US3288557A successfully refreshed from Google Patents.
US3288557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of acid gases for gas streams
Assignee: Chemical Construction Corp
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Filing: 1962-07-26
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Granted: 1966-11-29
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Expires: 1982-07-26
Abstract
No abstract record available.
Inventors
- 👤 Sidney A Bresler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:06
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/08; C10K1/10; C10K1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
IN THE PROCESS OF REMOVING WEAKLY ACIDIC GASES FROM GAS STREAMS BY SCRUBBING WITH AN AQUEOUS ALKALINE SCRUB SOLUTION, FOLLOWED BY REGENERATING OF THE SCRUB SOLUTION BY HEATING IN A STRIPPING TOWARD WHEREBY A MIXED VA STREAM CONTAINING DESORBED ACID GAS AND STEAM IS PRODUCED, THE IMPROVED METHOD OF RECOVERING HEAT FROM SAID MIXED VAPOR STREAM WHICH COMPRISES COOLING SAID MIXED VAPOR STREAM BY A FIRST INDIRECT HEAT EXCHANGE, WHEREBY A PORTION OF SAID STEAM COMPONENT IS CONDENSED TO FORM A FIRST CONDENSATE STREAM, RECYCLING SAID FIRST CONDENSATE STREAM TO SAID REGENERATIOON STEP IN THE UPPER PART OF SAID STRIPPING TOWER, FURTHER COOLING SAID MIXED VAPOR STREAM BY A SECOND HEAT EXCHANGE, WHEREBY ANOTHER PORTION OF SAID STREAM COMPONENT IS CONDENSED TO FORM A SECOND CONDENSATE STREAM, DIVIDING SAID SECOND CONDENSATE STREAM INTO A FIRST PORTION AND A SECOND POR-
Claim 2
Dependent Claim
140 words
IN THE PROCESS OF REMOVING WEAKLY ACIDIC GASES FROM GAS STREAMS BY SCRUBBING WITH AN AQUEOUS ALKALINE SCRUB SOLUTION, FOLLOWED BY REGENERATING OF THE SCRUB SOLUTION BY HEATING IN A STRIPPING TOWARD WHEREBY A MIXED VA STREAM CONTAINING DESORBED ACID GAS AND STEAM IS PRODUCED, THE IMPROVED METHOD OF RECOVERING HEAT FROM SAID MIXED VAPOR STREAM WHICH COMPRISES COOLING SAID MIXED VAPOR STREAM BY A FIRST INDIRECT HEAT EXCHANGE, WHEREBY A PORTION OF SAID STEAM COMPONENT IS CONDENSED TO FORM A FIRST CONDENSATE STREAM, RECYCLING SAID FIRST CONDENSATE STREAM TO SAID REGENERATIOON STEP IN THE UPPER PART OF SAID STRIPPING TOWER, FURTHER COOLING SAID MIXED VAPOR STREAM BY A SECOND HEAT EXCHANGE, WHEREBY ANOTHER PORTION OF SAID STREAM COMPONENT IS CONDENSED TO FORM A SECOND CONDENSATE STREAM, DIVIDING SAID SECOND CONDENSATE STREAM INTO A FIRST PORTION AND A SECOND POR-
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |