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US 6,021,723 AGranted
Hazardous waste treatment method and apparatus
AssigneeJohn A. Vallomy
InventorJohn A. Vallomy
Life of this patent
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Abstract
A method and apparatus for heat treating of hazardous waste by heating the waste in a pyrolyzing chamber and forming an off-gas, heating the off-gas for a sufficient time to destroy dioxins and furans, then reducing and cooling the off-gas in a secondary treating chamber having a graphite stack and recovering metallics by distillation.
Claims14
Apparatus for treatment of waste containing toxic and/or hazardous substances comprising:
- a heated pyrolyzing chamber for primary destruction of waste;
- means for heating said pyrolyzing chamber and for maintaining the interior of said pyrolyzing chamber at a high temperature;
- a charging mechanism connected to said pyrolyzing chamber for introducing waste to said chamber;
- a post reaction area associated with said pyrolyzing chamber and adjacent said pyrolyzing chamber;
- means for heating said post reaction area;
- a gas off-take communicating with said post reaction area;
- a cooling zone communicating with said gas off-take for passing off-gas through said cooling zone and said gas off-take;
- and
- a stack of eraphite articles in said cooling zone.
6 more elements
Apparatus for treatment of waste containing toxic and/or hazardous substances comprising:
- a pyrolyzing chamber for primary destruction of waste, said pyrolyzing chamber having a liquid metal tapping hole and a slag tapping hole;
- means for heating said pyrolyzing chamber and for maintaining the interior of said pyrolyzing chamber at a temperature of greater than about 3000.degree. F. (1650.degree. C.);
- a charging mechanism connected to said pyrolyzing chamber;
- a post reaction area adjacent to said pyrolyzing chamber and coterminous with said pyrolyzing chamber;
- means for heating said post reaction area to a temperature from about 2500.degree. F. (1370.degree. C.) to about 3000.degree. F. (1650.degree. C.) for a period of at least 2 seconds;
- a gas off-take communicating with said post reaction area and coupled to said pyrolyzing chamber;
- a secondary treating chamber connected to said gas off-take for passing off-gas through said second treating chamber and said gas off-take;
- and
- a stack of graphite articles in said second treating chamber for reducing the temperature. of the off-gas passing therethrough.
6 more elements
Dependencies are inferred from the claim text.