Hazardous waste melter

Details Hazardous waste melter Hazardous waste melter

1992-01-22

1994-06-07

Reynolds, Bruce A.

Industrial electric heating furnaces

Glass furnace device

Joule effect heating

373 27, 373 30, 373 34, 373 35, 373 79, 373 85, 373116, 65134, 252629, C03B 5027

Patent

active

053196694

ABSTRACT:
An apparatus for processing various hazardous waste materials by melting in a vessel for subsequent solidification is disclosed which includes a seal for the cover thereof. Melter includes a high-speed mixing impeller powered by a drive shaft which extends through an opening in the cover. The vessel is electrically heated by discharge of electrical energy through the melt contained in the vessel. In one embodiment the impeller and shaft are included in the electrical heating circuit. A shaft seal engages the shaft at a point spaced from the cover. An axially extensible seal seals a space bounded by the shaft seal and the opening in the cover. Purge gas is supplied to the sealed space to provide positive gas flow from the sealed space into the vessel. A cold wall transport duct for off-gas porting is disclosed. A bottom drain structure including a sleeve and plug is also disclosed. The output of the melter may be subsequently heated in a holding tank to refine the output.

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