Patent US4447262A successfully refreshed from Google Patents.
US4447262A
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Destruction of halogen-containing materials
Assignee: Boeing North American Inc
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Filing: 1983-05-16
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Granted: 1984-05-08
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Expires: 2003-05-16
Abstract
Abstract An organic waste containing halogen is destroyed by treatment in a molten salt pool comprising a mixture of a basic alkaline earth metal compound with an alkaline earth metal halide. An oxygen-containing gas is introduced into the pool containing the waste to produce a gaseous combustion product and to cause the halogen present in the waste to react with the basic alkaline earth metal compound to produce additional alkaline earth metal halide.
Inventors
- 👤 Richard L. Gay
- 👤 Arthur L. Kohl
- 👤 Samuel J. Yosim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:28
CPC Classifications
A; A62; A62D; A62D3/00; A62D3/30; A62D3/32; C; C01; C01F; C01F11/00; C01F11/20; C01F11/24; C10; C10B; C10B53/00; C22; C22B; C22B7/00; C22B7/001; A62D2101/00; A62D2101/20; A62D2101/22; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/908; Y10S210/909; Y10S423/00; Y10S423/09; Y10S423/12
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
92 words
A process for destroying a halogen-containing organic waste which comprises: providing a molten salt pool containing a basic alkaline earth metal compound selected from the group consisting of alkaline earth metal oxides and carbonates and an alkaline earth metal halide; introducing into said molten salt pool a halogen-containing organic waste and an oxygen-containing gas in an amount sufficient to convert said waste into a gaseous combustion product and to cause the halogen present in said waste to react with said basic alkaline earth metal compound to form additional alkaline earth metal halide.
Claim 2
Dependent Claim
92 words
A process for destroying a halogen-containing organic waste which comprises: providing a molten salt pool containing a basic alkaline earth metal compound selected from the group consisting of alkaline earth metal oxides and carbonates and an alkaline earth metal halide; introducing into said molten salt pool a halogen-containing organic waste and an oxygen-containing gas in an amount sufficient to convert said waste into a gaseous combustion product and to cause the halogen present in said waste to react with said basic alkaline earth metal compound to form additional alkaline earth metal halide.
Claim 3
Dependent Claim
11 words
A process according to claim 1 wherein said pool contains CaO.
Claim 4
Dependent Claim
13 words
A process according to claim 1 wherein said pool contains CaCO 3 .
Claim 5
Dependent Claim
15 words
A process according to claim 1 wherein said pool contains CaO and CaCl 2 .
Claim 6
Dependent Claim
25 words
A process according to claim 1 wherein said pool comprises a mixture of CaO and CaCl 2 containing about 2 to 20 wt. % CaO.
Claim 7
Dependent Claim
12 words
A process according to claim 1 wherein said oxygen-containing gas comprises air.
Claim 8
Dependent Claim
14 words
A process according to claim 1 wherein said gaseous product comprises a combustible gas.
Claim 9
Dependent Claim
15 words
A process according to claim 1 wherein said gaseous product comprises a non-combustible flue gas.
Claim 10
Dependent Claim
38 words
A process according to claim 1 wherein a stream of said basic alkaline earth metal compound is continuously or intermittently fed into said pool and a stream of molten salt is continuously or intermittently removed from said pool.
Claim 11
Dependent Claim
134 words
A process for treating an organic waste containing halogen and nonreactive metal values which comprises: providing a molten salt pool comprising a mixture of a basic alkaline earth metal compound selected from the group consisting of alkaline earth metal oxides and carbonates with an alkaline earth metal halide; introducing into said pool a halogen-containing organic waste and an oxygen-containing gas in an amount sufficient to convert said waste into a gaseous combustion product and to cause the halogen present in said waste to react with said basic alkaline earth metal compound to form additional alkaline earth metal halide; recovering said gaseous product, said alkaline earth metal halide and said nonreactive metal values from said molten salt pool; and adding to said molten salt pool as salt makeup an alkaline earth metal oxide or carbonate.
Claim 12
Dependent Claim
134 words
A process for treating an organic waste containing halogen and nonreactive metal values which comprises: providing a molten salt pool comprising a mixture of a basic alkaline earth metal compound selected from the group consisting of alkaline earth metal oxides and carbonates with an alkaline earth metal halide; introducing into said pool a halogen-containing organic waste and an oxygen-containing gas in an amount sufficient to convert said waste into a gaseous combustion product and to cause the halogen present in said waste to react with said basic alkaline earth metal compound to form additional alkaline earth metal halide; recovering said gaseous product, said alkaline earth metal halide and said nonreactive metal values from said molten salt pool; and adding to said molten salt pool as salt makeup an alkaline earth metal oxide or carbonate.
Claim 13
Dependent Claim
26 words
A process according to claim 10 wherein said metal values are selected from the group consisting of copper, silver, gold, tin, lead, antimony, bismuth and aluminum.
Claim 14
Dependent Claim
20 words
A process according to claim 10 wherein said metal values are recovered in the form of the molten free metal.
Claim 15
Dependent Claim
38 words
A process according to claim 10 wherein a stream of said basic alkaline earth metal compound is continuously or intermittently fed into said pool and a stream of molten salt is continuously or intermittently removed from said pool.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1987-05-08 | 1987-11-07 | 1988-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-08 | 1991-11-07 | 1992-05-08 | $3760.00 | Window Closed / Lapsed |
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