Patent US3816599A successfully refreshed from Google Patents.
US3816599A
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Hydrogen chloride recovery
Assignee: Lummus Technology LLC
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Filing: 1971-11-16
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Granted: 1974-06-11
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Expires: 1991-11-16
Abstract
Abstract AN OFF-GAS FROM AN OXYCHLORINATOR CONTAINING WATER VAPOR AND HYDROGEN CHLORIDE IS SUBJECTED TO HIGH PRESSURELOW PRESSURE AZEOTROPIC DISTILLATION TO RECOVER HYDROGEN CHLORIDE THEREFROM. AN OXYGEN-CONTAINING GAS IS USED AS A STRIPPING MEDIUM IN THE HIGH PRESSURE COLUMN AND THE HYDROGEN CHLORIDE OF THE OFF-GAS IS RECOVERED WITH THE OXYGEN-CONTAINING GAS FOR INTRODUCTION INTO THE OXYCHLORINATOR.
Inventors
- 👤 N Kafes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:04
CPC Classifications
C; C01; C01B; C01B7/00; C01B7/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |