Patent US2855279A successfully refreshed from Google Patents.
US2855279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for converting hydrochloric acid into chlorine
Assignee: Individual
•
Filing: 1956-03-29
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Granted: 1958-10-07
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Expires: 1976-03-29
Abstract
No abstract record available.
Inventors
- 👤 Walter Hermine Johanna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:01
CPC Classifications
C; C01; C01B; C01B7/00; C01B7/01; C01B7/03; C01B7/04; Y; Y02; Y02P; Y02P20/00; Y02P20/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A PROCESS FOR CONVERTING HYDROCHLORIC ACID INTO CHLORINE COMPRISES OF THE FOLLOWING STEPS: PASSING AN AQUEOUS HYDROCHLORIC ACID SOLUTION OF CONCENTRATION NOT TO EXCEED 35% IN COUNTERCURRENT FLOW WITH A GASEOUS MIXTURE OF AIR AND NO2 AT TEMPERATURES BETWEEN 80* C. AND THE BOILING POINT OF SAID HYDROCHLORIC ACID SOLUTION THROUGH A REACTOR PROVIDED WITH PACKING MATERIAL, SCRUBBING THE EFFLUENT GASES FROM SAID REACTOR WITH SULFURIC ACID HAVING A CONCENTRATION OF 60%-98% TO ABSORB NO2 AND MOISTURE FROM THE SAID EFFLUENT GASES, FURTHER SCRUBBING THE UNABSORBED GASES ISSUING FROM THE SULFURIC ACID SCRUBBER WITH CARBON TETRACHLORIDE UNDER INCREASED PRESSURES, AND RECOVERING PURE CHLORINE IN THE GASEOUS STATE BY PARTIAL PRESSURE RELEASE OF THE CARBON TETRACHLORIDE SOLUTION.
Claim 2
Dependent Claim
116 words
A PROCESS FOR CONVERTING HYDROCHLORIC ACID INTO CHLORINE COMPRISES OF THE FOLLOWING STEPS: PASSING AN AQUEOUS HYDROCHLORIC ACID SOLUTION OF CONCENTRATION NOT TO EXCEED 35% IN COUNTERCURRENT FLOW WITH A GASEOUS MIXTURE OF AIR AND NO2 AT TEMPERATURES BETWEEN 80* C. AND THE BOILING POINT OF SAID HYDROCHLORIC ACID SOLUTION THROUGH A REACTOR PROVIDED WITH PACKING MATERIAL, SCRUBBING THE EFFLUENT GASES FROM SAID REACTOR WITH SULFURIC ACID HAVING A CONCENTRATION OF 60%-98% TO ABSORB NO2 AND MOISTURE FROM THE SAID EFFLUENT GASES, FURTHER SCRUBBING THE UNABSORBED GASES ISSUING FROM THE SULFURIC ACID SCRUBBER WITH CARBON TETRACHLORIDE UNDER INCREASED PRESSURES, AND RECOVERING PURE CHLORINE IN THE GASEOUS STATE BY PARTIAL PRESSURE RELEASE OF THE CARBON TETRACHLORIDE SOLUTION.
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) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |