WO1996040374B1 - Production of halogen and carbon oxide streams - Google Patents
Production of halogen and carbon oxide streamsInfo
- Publication number
- WO1996040374B1 WO1996040374B1 PCT/US1996/008381 US9608381W WO9640374B1 WO 1996040374 B1 WO1996040374 B1 WO 1996040374B1 US 9608381 W US9608381 W US 9608381W WO 9640374 B1 WO9640374 B1 WO 9640374B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- carbon
- molten metal
- bath
- gas
- halogenated organic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Abstract
A method relates to treating a halogenated organic waste to produce halogen gas and carbon oxide gas streams. The method includes directing a halogenated organic waste, having a halogen-to-hydrogen atomic ratio of less than about one, into a molten metal bath. The molten metal bath is inert to the halogen and has a free energy of oxidation greater than that of the formation of carbon monoxide from atomic carbon. The halogenated organic feed is converted into halogen gas and atomic carbon, whereby the halogen gas is released from the molten metal bath. An oxidant is directed into the molten metal bath, whereby the atomic carbon is oxidized to form a carbon oxide gas, which is released from the molten metal bath.
Claims
1. A method for processing a halogenated organic waste to produce a hydrogen halide gas and carbon oxide gas streams, comprising the steps of: a) directing a halogenated organic waste, having a halogen-to-hydrogen atomic ratio of less than about one into a molten metal bath, said molten metal bath being inert to said halogen and having a free energy of oxidation greater than that of the formation of a carbon oxide from atomic carbon, said halogenated organic feed being converted into a hydrogen halide gas and atomic carbon, whereby said hydrogen halide gas is released from the molten metal bath; and b) directing an oxidant into the molten metal bath, whereby the atomic carbon is oxidized to form a carbon oxide gas which is released from the molten metal bath, thereby processing the halogenated organic waste to produce hydrogen halide and carbon oxide gas streams.
2. The method of Claim 1 wherein the injection of oxidant into the molten metal bath is separate from that of the halogenated organic feed, whereby an enriched hydrogen halide gas stream is formed and, separately, an enriched carbon oxide gas stream is formed.
3. The method of Claim 2 wherein the halogenated organic feed and the oxidant are alternately directed into the molten metal bath.
4. The method of Claim 1 wherein the oxidant is directed into the molten metal bath at a location which is remote from that of the halogenated organic feed, and distinct streams of carbon oxide gas and hydrogen halide gas are formed concurrently.
5. The method of Claim 1 wherein the halogen of the halogenated hydrocarbon feed includes chlorine.
6. The method of Claim 1 wherein the halogen of the halogenated hydrocarbon feed is selected from a group consisting of fluorine, bromine and iodine.
7. The method of Claim 1 wherein the carbon oxide gas stream includes carbon monoxide.
8. The method of Claim 1 wherein the carbon oxide gas stream includes carbon dioxide.
9. The method of Claim 1 wherein the hydrogen halide includes hydrogen chloride.
10. The method of Claim 1 wherein the hydrogen halide is selected from the group consisting of hydrogen fluoride, hydrogen bromide and hydrogen iodide.
11. The method of Claim 1 wherein the hydrogen halide gas stream further includes a halogen gas selected from a group consisting of chlorine gas, fluorine gas, bromine gas and iodine gas .
12. The method of Claim 1 wherein the hydrogen halide gas further includes hydrogen gas.
13. The method of Claim 1 wherein the oxidant includes oxygen gas .
14. The method of Claim 1 wherein the oxidant includes carbon dioxide or water.
15. The method of Claim 1 wherein the molten bath includes a molten metal selected from the group consisting of gold, nickel, copper and cobalt.
16. The method of Claim 1 wherein the atomic carbon is soluble in the molten metal .
17. The method of Claim 16 wherein the carbon concentration of the molten metal bath is about 0.5 percent.
18. The method of Claim 16 wherein the carbon concentration of the molten metal bath is about 0.1 percent.
19. The method of Claim 16 wherein the carbon concentration of the molten metal bath is about 0.05 percent.
20. The method of Claim 1 wherein said molten metal bath includes a graphite refractory lining.
21. The method of Claim 1 wherein atomic chlorine is soluble in the molten metal.
22. The method of Claim 1 wherein the halogenated organic feed includes chloroethane.
23. The method of Claim 1 wherein the halogenated organic feed includes chlorobenzene.
24. The method of Claim 1 wherein the halogenated organic feed includes dioxin.
25. The method of Claim 1 wherein the halogenated organic feed includes polychlorinated biphenyls.
26. The method of Claim 1 wherein the molten bath comprises a first metal, which has a free energy of oxidation that is greater than that of oxidation of atomic carbon to form carbon monoxide, and a second metal, which has a free energy of oxidation that is greater than that of oxidation of carbon monoxide to form carbon dioxide.
27. The method of Claim 1 wherein the metal of the molten metal bath has a free energy of oxidation greater than that of the oxidation of carbon monoxide to form carbon dioxide.
28. A method for treating a halogenated organic waste to produce hydrogen halide gas and carbon oxide gas streams, comprising the steps of: a) directing a halogenated organic waste, having a halogen-to-hydrogen atomic ratio of less than about one into a molten nickel bath, said molten nickel bath being inert to said halogen under the conditions of the nickel molten bath and having a free energy of oxidation greater than that of the formation of a carbon oxide from atomic carbon, said halogenated organic feed being converted into a hydrogen halide gas and atomic carbon, whereby said hydrogen halide gas is released from the molten nickel bath while maintaining a low concentration of carbon in the nickel metal bath; and b) directing an oxidant into the molten nickel bath, whereby the atomic carbon is oxidized to form a carbon oxide gas which is released from the molten nickel bath, thereby processing the halogenated organic waste to produce the hydrogen halide and carbon oxide gas streams.
29. A method for treating a halogenated organic waste to produce hydrogen halide gas and carbon oxide gas streams, comprising the steps of: a) directing a halogenated organic waste, having a halogen-to-hydrogen atomic ratio of less than about one into a molten nickel bath, said molten nickel bath being inert to said halogen under the conditions of the nickel metal bath and having a free energy of oxidation greater than that of the formation of a carbon oxide from atomic carbon, said halogenated organic feed being converted into a hydrogen halide gas and atomic carbon, whereby said hydrogen halide gas is released from the molten nickel bath while maintaining a high concentration of carbon in the nickel metal bath; and b) directing an oxidant into the molten metal bath, whereby the atomic carbon is oxidized to form a carbon oxide gas which is released from the molten nickel bath, thereby treating the halogenated organic waste to produce hydrogen halide and carbon oxide gas streams.
30. A method for treating a halogenated organic waste to produce hydrogen halide gas and carbon oxide gas streams, comprising the steps of: a) directing a halogenated organic waste, having a halogen-to-hydrogen atomic ratio of less than about one into a molten copper bath, said molten copper bath being inert to said halogen under the conditions of the molten copper bath and having a free energy of oxidation greater than that of the formation of a carbon oxide from atomic carbon, said halogenated organic feed being converted into a hydrogen halide gas and atomic carbon, whereby said hydrogen halide gas is released from the molten copper bath while maintaining a high concentration of carbon in the copper bath; and b) directing an oxidant into the molten copper bath, whereby the atomic carbon is oxidized to form a carbon oxide gas which is released from the molten copper bath, thereby treating the halogenated organic waste to produce hydrogen halide and carbon oxide gas streams.
31. The method of Claim 29 wherein the molten copper bath further includes nickel .
32. The method of Claim 30 wherein the nickel is about one percent, by weight, of the copper-nickel bath.
33. A method for processing a halogenated organic waste to produce a halogen gas and carbon oxide gas streams, comprising the steps of: a) directing a halogenated organic waste, having a halogen-to-hydrogen atomic ratio of greater than about one into a molten metal bath, said molten metal bath being inert to said halogen and having a free energy of oxidation greater than that of the formation of a carbon oxide from atomic carbon, said halogenated organic feed being converted into a halogen gas and atomic carbon, whereby said halogen gas is released from the molten metal bath; and b) directing an oxidant into the molten metal bath, whereby the atomic carbon is oxidized to form a carbon oxide gas which is released from the molten metal bath, thereby processing the halogenated organic waste to produce hydrogen halide and carbon oxide gas streams.
34. The method of Claim 35 wherein the injection of oxidant into the molten metal bath is separate from that of the halogenated organic feed, whereby an enriched halogen gas stream is formed and, separately, an enriched carbon oxide gas stream is formed.
35. The method of Claim 33 wherein the halogenated organic feed and the oxidant are alternately directed into the molten metal bath.
36. The method of Claim 33 wherein the oxidant is directed into the molten metal bath at a location which is remote from that of the halogenated organic feed, and distinct streams of carbon oxide gas and hydrogen halide gas are formed concurrently.
37. The method of Claim 33 wherein the halogen of the halogenated hydrocarbon feed includes chlorine.
38. The method of Claim 33 wherein the halogen of the halogenated hydrocarbon feed is selected from a group consisting of fluorine, bromine and iodine.
39. The method of Claim 33 wherein the carbon oxide gas stream includes carbon monoxide.
40. The method of Claim 33 wherein the carbon oxide gas stream includes carbon dioxide.
41. The method of Claim 33 wherein the halogen gas is selected from a group consisting of chlorine gas, fluorine gas, bromine gas and iodine gas.
42. The method of Claim 33 wherein the oxidant includes oxygen gas.
43. The method of Claim 33 wherein the oxidant includes carbon dioxide or water.
44. The method of Claim 33 wherein the molten bath includes a molten metal selected from the group consisting of gold, nickel, copper and cobalt.
45. The method of Claim 33 wherein the atomic carbon is soluble in the molten metal.
46. The method of Claim 45 wherein the carbon concentration of the molten metal bath is about 0.5 percent.
47. The method of Claim 45 wherein the carbon concentration of the molten metal bath is about 0.1 percent.
48. The method of Claim 45 wherein the carbon concentration of the molten metal bath is about 0.05 percent.
49. The method of Claim 33 wherein said molten metal bath includes a graphite refractory lining.
50. The method of Claim 33 wherein atomic chlorine is soluble in the molten metal.
51. The method of Claim 33 wherein the halogenated organic feed includes tetrachloroethane.
52. The method of Claim 33 wherein the halogenated organic feed includes hexachlorobenzene.
53. The method of Claim 33 wherein the halogenated organic feed includes dioxin.
54. The method of Claim 33 wherein the halogenated organic feed includes polychlorinated biphenyls.
55. The method of Claim 33 wherein the molten bath comprises a first metal, which has a free energy of oxidation that is greater than that of oxidation of atomic carbon to form carbon monoxide, and a second metal, which has a free energy of oxidation that is greater than that of oxidation of carbon monoxide to form carbon dioxide.
56. The method of Claim 33 wherein the metal of the molten metal bath has a free energy of oxidation greater than that of the oxidation of carbon monoxide to form carbon dioxide.
57. A method for processing a halogenated organic waste to produce a hydrogen halide gas and carbon oxide gas streams, comprising the steps of: a) directing a halogenated organic waste, having a halogen-to-hydrogen atomic ratio of greater than about one into a molten metal bath, said molten metal bath being inert to said halogen and having a free energy of oxidation greater than that of the formation of a carbon oxide from atomic carbon, said halogenated organic feed being converted into atomic halogen and atomic carbon, whereby said halogen is dissolved in the molten metal bath; b) directing an oxidant into the molten metal bath, whereby the atomic carbon is oxidized to form a carbon oxide gas, which is released from the molten metal bath; and c) directing a reductant into the molten metal bath, whereby the atomic halogen is reduced to form a hydrogen halide which is released from the molten metal bath, thereby processing the halogenated organic waste to produce hydrogen halide and carbon oxide gas streams.
58. The method of Claim 57 wherein the reductant includes hydrogen gas.
59. The method of Claim 57 wherein the molten metal bath includes zinc.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU59685/96A AU5968596A (en) | 1995-06-07 | 1996-06-03 | Production of halogen and carbon oxide streams |
| JP9500999A JPH11506720A (en) | 1995-06-07 | 1996-06-03 | Production of halogen and carbon oxide streams |
| EP96916979A EP0843579A1 (en) | 1995-06-07 | 1996-06-03 | Production of halogen and carbon oxide streams |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/478,439 US5695732A (en) | 1995-06-07 | 1995-06-07 | Method for treating a halogenated organic waste to produce halogen gas and carbon oxide gas streams |
| US08/478,439 | 1995-06-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1996040374A1 WO1996040374A1 (en) | 1996-12-19 |
| WO1996040374B1 true WO1996040374B1 (en) | 1997-01-30 |
Family
ID=23899941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1996/008381 Ceased WO1996040374A1 (en) | 1995-06-07 | 1996-06-03 | Production of halogen and carbon oxide streams |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5695732A (en) |
| EP (1) | EP0843579A1 (en) |
| JP (1) | JPH11506720A (en) |
| AU (1) | AU5968596A (en) |
| TW (1) | TW350019B (en) |
| WO (1) | WO1996040374A1 (en) |
| ZA (1) | ZA964418B (en) |
Families Citing this family (38)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5769924A (en) * | 1996-08-14 | 1998-06-23 | Eckert; C. Edward | Method of treating aluminum with chlorine produced from chlorocarbon compounds |
| WO2002100563A1 (en) * | 2001-06-08 | 2002-12-19 | Hiroshi Suzuki | Method and apparatus for decomposing material containing organic substance |
| US7507367B2 (en) | 2002-07-12 | 2009-03-24 | Cooper Paul V | Protective coatings for molten metal devices |
| US7731891B2 (en) | 2002-07-12 | 2010-06-08 | Cooper Paul V | Couplings for molten metal devices |
| US20050013715A1 (en) | 2003-07-14 | 2005-01-20 | Cooper Paul V. | System for releasing gas into molten metal |
| US7402276B2 (en) | 2003-07-14 | 2008-07-22 | Cooper Paul V | Pump with rotating inlet |
| US7470392B2 (en) | 2003-07-14 | 2008-12-30 | Cooper Paul V | Molten metal pump components |
| US20070253807A1 (en) | 2006-04-28 | 2007-11-01 | Cooper Paul V | Gas-transfer foot |
| US7906068B2 (en) | 2003-07-14 | 2011-03-15 | Cooper Paul V | Support post system for molten metal pump |
| US9409232B2 (en) | 2007-06-21 | 2016-08-09 | Molten Metal Equipment Innovations, Llc | Molten metal transfer vessel and method of construction |
| US8337746B2 (en) | 2007-06-21 | 2012-12-25 | Cooper Paul V | Transferring molten metal from one structure to another |
| US9205490B2 (en) | 2007-06-21 | 2015-12-08 | Molten Metal Equipment Innovations, Llc | Transfer well system and method for making same |
| US9643247B2 (en) | 2007-06-21 | 2017-05-09 | Molten Metal Equipment Innovations, Llc | Molten metal transfer and degassing system |
| US8613884B2 (en) | 2007-06-21 | 2013-12-24 | Paul V. Cooper | Launder transfer insert and system |
| US9156087B2 (en) | 2007-06-21 | 2015-10-13 | Molten Metal Equipment Innovations, Llc | Molten metal transfer system and rotor |
| US9410744B2 (en) | 2010-05-12 | 2016-08-09 | Molten Metal Equipment Innovations, Llc | Vessel transfer insert and system |
| US8366993B2 (en) | 2007-06-21 | 2013-02-05 | Cooper Paul V | System and method for degassing molten metal |
| CA2773082A1 (en) * | 2009-02-11 | 2010-08-02 | Natural Energy Systems Inc. | Process for the conversion of organic material to methane rich fuel gas |
| US8524146B2 (en) | 2009-08-07 | 2013-09-03 | Paul V. Cooper | Rotary degassers and components therefor |
| US8444911B2 (en) | 2009-08-07 | 2013-05-21 | Paul V. Cooper | Shaft and post tensioning device |
| US10428821B2 (en) | 2009-08-07 | 2019-10-01 | Molten Metal Equipment Innovations, Llc | Quick submergence molten metal pump |
| US8449814B2 (en) | 2009-08-07 | 2013-05-28 | Paul V. Cooper | Systems and methods for melting scrap metal |
| US8535603B2 (en) | 2009-08-07 | 2013-09-17 | Paul V. Cooper | Rotary degasser and rotor therefor |
| US8714914B2 (en) | 2009-09-08 | 2014-05-06 | Paul V. Cooper | Molten metal pump filter |
| US9108244B2 (en) | 2009-09-09 | 2015-08-18 | Paul V. Cooper | Immersion heater for molten metal |
| US8309049B2 (en) | 2009-10-19 | 2012-11-13 | Battelle Energy Alliance, Llc | Molten metal reactor and method of forming hydrogen, carbon monoxide and carbon dioxide using the molten alkaline metal reactor |
| US8128902B2 (en) * | 2011-04-12 | 2012-03-06 | Midwest Refrigerants, Llc | Method for the synthesis of anhydrous hydrogen halide and anhydrous carbon dioxide |
| US8834830B2 (en) | 2012-09-07 | 2014-09-16 | Midwest Inorganics LLC | Method for the preparation of anhydrous hydrogen halides, inorganic substances and/or inorganic hydrides by using as reactants inorganic halides and reducing agents |
| US9903383B2 (en) | 2013-03-13 | 2018-02-27 | Molten Metal Equipment Innovations, Llc | Molten metal rotor with hardened top |
| US9011761B2 (en) | 2013-03-14 | 2015-04-21 | Paul V. Cooper | Ladle with transfer conduit |
| US10052688B2 (en) | 2013-03-15 | 2018-08-21 | Molten Metal Equipment Innovations, Llc | Transfer pump launder system |
| US10138892B2 (en) | 2014-07-02 | 2018-11-27 | Molten Metal Equipment Innovations, Llc | Rotor and rotor shaft for molten metal |
| US10947980B2 (en) | 2015-02-02 | 2021-03-16 | Molten Metal Equipment Innovations, Llc | Molten metal rotor with hardened blade tips |
| US10267314B2 (en) | 2016-01-13 | 2019-04-23 | Molten Metal Equipment Innovations, Llc | Tensioned support shaft and other molten metal devices |
| US11149747B2 (en) | 2017-11-17 | 2021-10-19 | Molten Metal Equipment Innovations, Llc | Tensioned support post and other molten metal devices |
| US11358216B2 (en) | 2019-05-17 | 2022-06-14 | Molten Metal Equipment Innovations, Llc | System for melting solid metal |
| US11873845B2 (en) | 2021-05-28 | 2024-01-16 | Molten Metal Equipment Innovations, Llc | Molten metal transfer device |
| US12146508B2 (en) | 2022-05-26 | 2024-11-19 | Molten Metal Equipment Innovations, Llc | Axial pump and riser |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3445192A (en) * | 1963-03-25 | 1969-05-20 | Hooker Chemical Corp | Apparatus for production and recovery of hydrogen halides |
| DE2261795C3 (en) * | 1972-12-16 | 1975-05-28 | Basf Ag, 6700 Ludwigshafen | Process for the production of hydrogen chloride by thermal cleavage of organic substances containing chlorine |
| BE817313A (en) * | 1974-07-05 | 1974-11-04 | Deoxidation and degassing copper and its alloys - using hexachlorobenzene together with sodium fluoborate for grain refinement | |
| JPS5573835A (en) * | 1978-11-21 | 1980-06-03 | Fuji Electric Co Ltd | Metal recovering method |
| US4246255A (en) * | 1979-04-02 | 1981-01-20 | Rockwell International Corporation | Disposal of PCB |
| US4337368A (en) * | 1980-04-21 | 1982-06-29 | The Franklin Institute | Reagent and method for decomposing halogenated organic compounds |
| US4469661A (en) * | 1982-04-06 | 1984-09-04 | Shultz Clifford G | Destruction of polychlorinated biphenyls and other hazardous halogenated hydrocarbons |
| US4497782A (en) * | 1982-10-28 | 1985-02-05 | S. Garry Howell | Method for destroying toxic organic chemical products |
| US4447262A (en) * | 1983-05-16 | 1984-05-08 | Rockwell International Corporation | Destruction of halogen-containing materials |
| US4552667A (en) * | 1984-06-25 | 1985-11-12 | Shultz Clifford G | Destruction of organic hazardous wastes |
| US4574714A (en) * | 1984-11-08 | 1986-03-11 | United States Steel Corporation | Destruction of toxic chemicals |
| US4602574A (en) * | 1984-11-08 | 1986-07-29 | United States Steel Corporation | Destruction of toxic organic chemicals |
| EP0371201A1 (en) * | 1988-12-01 | 1990-06-06 | Ruhrkohle Aktiengesellschaft | Process for the hydrogenation of chloroorganic compounds and neutralisation of the resulting hydrogen chloride, and neutralising agent for hydrogen chloride resulting from chloroorganic compounds |
| SE467483B (en) * | 1989-11-24 | 1992-07-27 | Ips Interproject Service Ab | PROCEDURE DISCOVER HALOGENEOUS SUBSTANCES |
| US5084264A (en) * | 1989-12-12 | 1992-01-28 | Battelle Memorial Institute | Process for oxidation of hydrogen halides to elemental halogens |
| US5177304A (en) * | 1990-07-24 | 1993-01-05 | Molten Metal Technology, Inc. | Method and system for forming carbon dioxide from carbon-containing materials in a molten bath of immiscible metals |
| US5191154A (en) * | 1991-07-29 | 1993-03-02 | Molten Metal Technology, Inc. | Method and system for controlling chemical reaction in a molten bath |
| CA2113174A1 (en) * | 1991-07-29 | 1993-02-18 | Casey E. Mcgeever | Method and system for oxidation in a molten bath |
| GB9216666D0 (en) * | 1992-08-06 | 1992-09-23 | Electricity Ass Tech | A process for the destruction of halocarbons |
| US5435982A (en) * | 1993-03-31 | 1995-07-25 | Molten Metal Technology, Inc. | Method for dissociating waste in a packed bed reactor |
| US5301620A (en) * | 1993-04-01 | 1994-04-12 | Molten Metal Technology, Inc. | Reactor and method for disassociating waste |
| US5537940A (en) * | 1993-06-08 | 1996-07-23 | Molten Metal Technology, Inc. | Method for treating organic waste |
-
1995
- 1995-06-07 US US08/478,439 patent/US5695732A/en not_active Expired - Lifetime
-
1996
- 1996-05-30 ZA ZA964418A patent/ZA964418B/en unknown
- 1996-06-03 EP EP96916979A patent/EP0843579A1/en not_active Withdrawn
- 1996-06-03 AU AU59685/96A patent/AU5968596A/en not_active Abandoned
- 1996-06-03 JP JP9500999A patent/JPH11506720A/en active Pending
- 1996-06-03 WO PCT/US1996/008381 patent/WO1996040374A1/en not_active Ceased
- 1996-06-04 TW TW085106641A patent/TW350019B/en active
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