Process to stabilize scrubber sludge

Details Process to stabilize scrubber sludge Process to stabilize scrubber sludge

1992-04-15

1994-01-04

Lewis, Michael

Hazardous or toxic waste destruction or containment

Containment

Solidification, vitrification, or cementation

23313AS, 588257, C22B 114

Patent

active

052762548

ABSTRACT:
A process for stabilizing sludge containing flyash and calcium sulfate formed by a lime or limestone scrubber increases the sludge particles to a size at which leaching of toxic metals from the particles no longer occurs at toxic levels. The sludge is dewatered and injected into the furnace in a manner to cause the flyash to soften and stick together. The agglomerated particles then fall into a bottom ash pit for removal as a common waste.

REFERENCES:
patent: 4153655 (1979-05-01), Minnick et al.
patent: 4306903 (1981-12-01), Beggs et al.
patent: 4977837 (1990-12-01), Roos et al.
patent: 5019360 (1991-05-01), Lehto
patent: 5041398 (1991-08-01), Kauser et al.

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