US3260059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of hydrogen chloride
Assignee: Hooker Chemical Corp
•
Filing: 1963-10-21
•
Granted: 1966-07-12
•
Expires: 1983-10-21
Abstract
No abstract record available.
Inventors
- 👤 David S Rosenberg
- 👤 Edward A Belmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:39
CPC Classifications
C; C01; C01B; C01B7/00; C01B7/01; Y; Y10; Y10S; Y10S62/00; Y10S62/931
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
A METHOD OF PURFYING HYDROGEN CHLORIDE GAS CONTAINING WATER AND ORGANIC AND/OR INORGANIC CONTAMINANTS, WHICH COMPRISES REMOVING FROM THE HYDROGEN CHLORIDE GAS SUBSTANTIALLY ALL OF THE WATER AND SOLIDIFIABLE ORGANIC AND/OR INORGANIC CONTAMINANTS BY COMPRESSING THE HYDROGEN CHLORIDE GAS CONTAINING THESE IMPURITIES TO A PRESSURE WITHIN THE RANGE OF ABOUT 1 TO ABOUT 4 ATMOSPHERES, COOLING THE THUS-COMPRESSED GAS TO A TEMPERATURE NOT SUBSTANTIALLY BELOW ABOUT -10* CENTIGRADE, WHEREBY THE WATER AND SUBSTANTIAL AMOUNTS OF THE ORGANIC AND/OR INORGANIC CONTAMINANTS ARE CONDENSED TO FORM A MIST IN THE GAS, THEREAFTER, SEPARATING THE MIST FROM THE GAS, COMPRESSING THE THUS-TREATED GAS TO A SUITABLE LIQUEFACTION PRESSURE OF AT LEAST ABOUT 4 ATOMSPHERES, INTRODUCING THE THUS-COMPRESSED GAS UNDER PRESSURE INTO A FRACTIONATION ZONE, COUNTERCURRENTLY CONTACTING THE GAS WITHIN THE FRACTIONATION ZONE WITH LIQUID HYDROGEN CHLORIDE, MAINTAINING REFLUX CONDITIONS WITHIN THE FRACTIONATION ZONE, FORMING A LIQUID FRACTION CONTAINING THE CONTAMINANTS HAVING A HIGHER BOILING POINT THAN HYDROGEN CHLORIDE, WHICH FRACTION IS REMOVED SUBSTANTIALLY CONTINUOUSLY FROM A LOWER PORTION OF THE FRACTIONATION ZONE, AND FORMING A PURIFIED HYDROGEN CHLORIDE PRODUCT, SUBSTANTIALLY FREE OF HIGHER BOILER IMPURITIES, WHICH PRODUCT IS RECOVERED FROM AN UPPER PORTION OF THE FRACTIONATION ZONE.
Claim 2
Independent Claim
194 words
A METHOD OF PURFYING HYDROGEN CHLORIDE GAS CONTAINING WATER AND ORGANIC AND/OR INORGANIC CONTAMINANTS, WHICH COMPRISES REMOVING FROM THE HYDROGEN CHLORIDE GAS SUBSTANTIALLY ALL OF THE WATER AND SOLIDIFIABLE ORGANIC AND/OR INORGANIC CONTAMINANTS BY COMPRESSING THE HYDROGEN CHLORIDE GAS CONTAINING THESE IMPURITIES TO A PRESSURE WITHIN THE RANGE OF ABOUT 1 TO ABOUT 4 ATMOSPHERES, COOLING THE THUS-COMPRESSED GAS TO A TEMPERATURE NOT SUBSTANTIALLY BELOW ABOUT -10* CENTIGRADE, WHEREBY THE WATER AND SUBSTANTIAL AMOUNTS OF THE ORGANIC AND/OR INORGANIC CONTAMINANTS ARE CONDENSED TO FORM A MIST IN THE GAS, THEREAFTER, SEPARATING THE MIST FROM THE GAS, COMPRESSING THE THUS-TREATED GAS TO A SUITABLE LIQUEFACTION PRESSURE OF AT LEAST ABOUT 4 ATOMSPHERES, INTRODUCING THE THUS-COMPRESSED GAS UNDER PRESSURE INTO A FRACTIONATION ZONE, COUNTERCURRENTLY CONTACTING THE GAS WITHIN THE FRACTIONATION ZONE WITH LIQUID HYDROGEN CHLORIDE, MAINTAINING REFLUX CONDITIONS WITHIN THE FRACTIONATION ZONE, FORMING A LIQUID FRACTION CONTAINING THE CONTAMINANTS HAVING A HIGHER BOILING POINT THAN HYDROGEN CHLORIDE, WHICH FRACTION IS REMOVED SUBSTANTIALLY CONTINUOUSLY FROM A LOWER PORTION OF THE FRACTIONATION ZONE, AND FORMING A PURIFIED HYDROGEN CHLORIDE PRODUCT, SUBSTANTIALLY FREE OF HIGHER BOILER IMPURITIES, WHICH PRODUCT IS RECOVERED FROM AN UPPER PORTION OF THE FRACTIONATION ZONE.
References Cited (Backward Citations)
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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) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |