US3969490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of hydrogen chloride by thermal dissociation of organic substances containing chlorine
Assignee: BASF SE
•
Filing: 1973-12-12
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Granted: 1976-07-13
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Expires: 1993-12-12
Abstract
Abstract A process for the thermal dissociation of an organic substance containing chlorine in which substantially anhydrous hydrogen chloride is obtained. The substance containing chlorine is introduced in a first stage into a salt melt in the absence of oxygen, hydrogen chloride is discharged from the reaction mixture and then oxygen is supplied to the salt melt in a second stage.
Inventors
- 👤 Gerard DE Beuckelaer
- 👤 Gerd Krome
- 👤 Jan Langens
- 👤 Ferdinand Lockefeer
- 👤 Paul Schaerlaekens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:58
CPC Classifications
F; F23; F23G; F23G7/00; C; C01; C01B; C01B7/00; C01B7/01; Y; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
97 words
A process for the production of hydrogen chloride by thermal dissociation of an organic substance containing chlorine, wherein in a first stage, in which a temperature of from 400° to 1200°C. prevails, the substance containing chlorine is introduced into a salt melt of one or more alkali metal chlorides in the absence of oxygen, hydrogen chloride is discharged from reaction mixture and in a second stage, in which a temperature of from 650° to 1250°C. prevails, oxygen is supplied to the melt for the combustion of organic constituents remaining in it, and the combustion products are removed.
Claim 2
Dependent Claim
97 words
A process for the production of hydrogen chloride by thermal dissociation of an organic substance containing chlorine, wherein in a first stage, in which a temperature of from 400° to 1200°C. prevails, the substance containing chlorine is introduced into a salt melt of one or more alkali metal chlorides in the absence of oxygen, hydrogen chloride is discharged from reaction mixture and in a second stage, in which a temperature of from 650° to 1250°C. prevails, oxygen is supplied to the melt for the combustion of organic constituents remaining in it, and the combustion products are removed.
Claim 3
Dependent Claim
22 words
A process as set forth in claim 1 wherein a temperature of from 600° to 900°C is maintained in the first stage.
Claim 4
Dependent Claim
25 words
A process as set forth in claim 1 wherein the organic substance containing chlorine has a chlorine content of from 40 to 80% by weight.
Claim 5
Dependent Claim
37 words
A process as set forth in claim 1, said process being carried out on a continuous basis, wherein after the discharge of combustion products from the second stage, the salt melt is returned to the first stage.
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) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |