US3950443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Utilization of waste products containing chlorine in the production of chlorinated organic compounds by combination of oxychlorination with combustion
Assignee: Individual
•
Filing: 1973-09-27
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Granted: 1976-04-13
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Expires: 1993-09-27
Abstract
Abstract Two byproducts of the chlorine-consuming industry, weak hydrochloric acid and chlorine-containing organic wastes, are utilized in the production of chlorinated organics, preferably hydrocarbons, by oxychlorination. The chlorine-containing organic waste is burned, liberating its chlorine content as HCl, its heat content being used to evaporate weak hydrochloric acid by direct contact with the combustion gases, and the mixture is passed, with organics, preferably hydrocarbons, and air, over an oxychlorination catalyst of the Deacon type. The chlorinated organic, preferably hydrocarbon, is recovered by conventional means.
Inventors
- 👤 Walter H. Prahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:14
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/15
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
60 words
A process of preparing chlorinated hydrocarbons by the oxychlorination process which comprises: 1. Oxidizing combustible chlorine-containing hydrocarbon waste material to form a combustion gas, 2. mixing the combustion gas with a hydrocarbon, a chlorinated hydrocarbon or mixtures thereof, 3. contacting said mixture in the vapor phase with an oxychlorination catalyst, and 4. recovering the chlorinated hydrocarbon obtained in the process.
Claim 2
Dependent Claim
60 words
A process of preparing chlorinated hydrocarbons by the oxychlorination process which comprises: 1. Oxidizing combustible chlorine-containing hydrocarbon waste material to form a combustion gas, 2. mixing the combustion gas with a hydrocarbon, a chlorinated hydrocarbon or mixtures thereof, 3. contacting said mixture in the vapor phase with an oxychlorination catalyst, and 4. recovering the chlorinated hydrocarbon obtained in the process.
Claim 3
Dependent Claim
22 words
Process of claim 1 in which the chlorine-containing combustible waste material is the only source of hydrogen chloride consumed in the oxychlorination.
Claim 4
Dependent Claim
22 words
Process of claim 1 in which part of the hydrochloric acid is derived from hydrochloric acid evaporated into the hot combustion gas.
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) | 1979-04-13 | 1979-10-13 | 1980-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-13 | 1983-10-13 | 1984-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-13 | 1987-10-13 | 1988-04-13 | $7700.00 | Window Closed / Lapsed |