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Title: Process to stabilize scrubber sludge

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. 4 figs.
Authors:
; ;
Publication Date:
OSTI Identifier:
7146336
Report Number(s):
US 5276254; A
PPN: US 7-868701
Resource Type:
Patent
Resource Relation:
Patent File Date: 15 Apr 1992
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; METALS; LAND POLLUTION CONTROL; SLUDGES; AGGLOMERATION; CALCIUM SULFATES; FLY ASH; SCRUBBERS; STABILIZATION; TOXIC MATERIALS; AEROSOL WASTES; ALKALINE EARTH METAL COMPOUNDS; ASHES; CALCIUM COMPOUNDS; COMBUSTION PRODUCTS; CONTROL; ELEMENTS; EQUIPMENT; HAZARDOUS MATERIALS; MATERIALS; OXYGEN COMPOUNDS; POLLUTION CONTROL; POLLUTION CONTROL EQUIPMENT; RESIDUES; SULFATES; SULFUR COMPOUNDS; WASTES 540120* -- Environment, Atmospheric-- Chemicals Monitoring & Transport-- (1990-)