Composition and method combining fluidized bed residue with scru

Details Composition and method combining fluidized bed residue with scru Composition and method combining fluidized bed residue with scru

1980-11-05

1983-08-09

Hruskoci, Peter A.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

55 73, 106109, 106120, 106DIG1, 210726, 210751, 264DIG49, 423244, C02F 1114

Patent

active

043977421

ABSTRACT:
A method of treating scrubber sludge removed from a gas scrubbing apparatus of the type adapted to reduce SO.sub.x content in the treated gas, is provided. The method comprises collecting the spent residue from a fluidized combustion bed of the type wherein lime or calcium carbonate particles are suspended in a fluidized medium and wherein a carbonaceous fuel is ignited proximate said fluidized medium to absorb therein substantial amounts of SO.sub.x which is generated upon ignition of said carbonaceous fuel. The fluidized bed combustion residue is then subjected to a separating treatment wherein a slurry of residue is mechanically agitated. The supernatant liquor from the slurry is separated therefrom, leaving a precipitate material which latter material is mixed with sludge. The novel composition comprises a combination of scrubber sludge and fluidized bed combustion residue precipitate, as above mentioned.

REFERENCES:
patent: 3642445 (1972-02-01), Muter et al.
patent: 3781408 (1973-12-01), Lin
patent: 3785840 (1974-01-01), Minnick et al.
patent: 3859799 (1975-01-01), Jaco, Jr.
patent: 3984312 (1976-10-01), Dulin et al.
patent: 4250134 (1981-02-01), Minnick
Minnick, "Devel. of Potent. Uses for the Residue from Fluidized Bed Combustion Processes," FE-2549-3, Prepared by U.S. ERDA, 8-29-77.
Minnick, "Devel. of Potent. Uses for the Residue from Fluidized Bed Combustion Processes," FE-2549-6, Prepared for U.S. ERDA, 1-3-78.

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