US4631183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the destruction of toxic organic products
Assignee: Hydro-Québec
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Filing: 1985-06-25
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Granted: 1986-12-23
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Expires: 2005-06-25
Abstract
Abstract There is disclosed a process for the destruction of toxic organic halogenated substances which comprises treating in a reaction chamber under a reductive atmosphere and at a temperature of from 1000° to 1600° C. a mixture of a toxic organic halogenated substance, carbon and a carbonate or bicarbonate of an alkali metal or of an alkaline earth metal whereby vapors of the alkali or alkaline earth metal are generated "in situ" to cause total degradation of the toxic organic halogenated substance into alkali or alkaline earth metal halide and carbon with the production of carbon monoxide which is subsequently oxidized into carbon dioxide.
Inventors
- 👤 Jean M. Lalancette
- 👤 Germain Belanger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:22
CPC Classifications
A; A62; A62D; A62D3/00; A62D3/30; A62D3/37; A62D3/10; A62D3/19; B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/68; B01D53/70; F; F23; F23G; F23G7/00; A62D2101/00; A62D2101/04; A62D2101/20; A62D2101/22; A62D2101/24; A62D2101/26; A62D2101/28; A62D2101/40; A62D2101/47; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/908; Y10S210/909
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
107 words
Process for the destruction of toxic organic halogenated substances which comprises treating in a reaction chamber under a reductive atmosphere and heated by a member of the group consisting of resistance heating, arc heating, and induction heating at a temperature of from 1000° to 1600° C. a mixture of a toxic organic halogenated substance, carbon and a carbonate or bicarbonate of an alkali metal and generating "in situ" to cause essentially total degradation of the toxic organic halogenated substance into alkali metal halide and free carbon and carbon monoxide exit gas containing at least some free alkali metal which carbon monoxide is subsequently oxidized into carbon dioxide.
Claim 2
Dependent Claim
107 words
Process for the destruction of toxic organic halogenated substances which comprises treating in a reaction chamber under a reductive atmosphere and heated by a member of the group consisting of resistance heating, arc heating, and induction heating at a temperature of from 1000° to 1600° C. a mixture of a toxic organic halogenated substance, carbon and a carbonate or bicarbonate of an alkali metal and generating "in situ" to cause essentially total degradation of the toxic organic halogenated substance into alkali metal halide and free carbon and carbon monoxide exit gas containing at least some free alkali metal which carbon monoxide is subsequently oxidized into carbon dioxide.
Claim 3
Dependent Claim
15 words
The process of claim 1, wherein the reaction time is from 1 to 40 seconds.
Claim 4
Dependent Claim
21 words
The process of claim 1, wherein the reaction time is about 20 seconds and the reaction temperature is about 1500° C.
Claim 5
Dependent Claim
35 words
The process of claim 1, wherein carbonate or bicarbonate of the alkali metal is premixed with the carbon and the mixture is impregnated with the toxic organic halogenated substance and introduced in the reaction chamber.
Claim 6
Dependent Claim
23 words
The process of claim 4, wherein the gaseous components obtained from the reaction are vented from the reaction chamber to a combustion chamber.
Claim 7
Dependent Claim
44 words
The process of claim 1, wherein a mixture of the carbonate or bicarbonate of the alkali metal and carbon is pelletized and introduced in the reaction chamber while the toxic organic halogenated substance is simultaneously introduced in the reaction chamber by a different orifice.
Claim 8
Dependent Claim
13 words
The process of claim 1, wherein the reaction chamber is lined with graphite.
Claim 9
Dependent Claim
11 words
The process of claim 7 wherein the alkali metal is sodium.
Claim 10
Dependent Claim
12 words
The process of claim 1 carried out in the absence of oxygen.
Claim 11
Dependent Claim
17 words
The process of claim 9 wherein at least 99.9% of the toxic organic halogenated substances are degraded.
Claim 12
Dependent Claim
17 words
The process of claim 1 wherein at least 99.9% of the toxic organic halogenated substances are degraded.
Claim 13
Dependent Claim
38 words
The process of claim 1 consisting essentially of carrying out the process wherein the materials employed in the reductive atmosphere consist essentially of the toxic organic halogenated substance, carbon and a carbonate or bicarbonate of an alkali metal.
Claim 14
Dependent Claim
36 words
The process of claim 1 consisting of carrying out the process wherein the materials employed in the reductive atmosphere consist of the toxic organic halogenated substance, carbon and a carbonate or bicarbonate of an alkali metal.
Claim 15
Dependent Claim
11 words
The process of claim 1 wherein the alkali metal is sodium.
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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) | 1989-12-22 | 1990-06-23 | 1990-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-22 | 1994-06-23 | 1994-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-22 | 1998-06-23 | 1998-12-23 | $7700.00 | Window Closed / Lapsed |