Method for cleaning of a hot flue gas stream from waste incinera

Details Method for cleaning of a hot flue gas stream from waste incinera Method for cleaning of a hot flue gas stream from waste incinera

1987-01-12

1988-12-06

Sneed, H. M. S.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Halogenous component

423210, 423244, 106103, 106117, 106118, B01D 4706, B01J 800

Patent

active

047895322

ABSTRACT:
In a method for cleaning of flue gas derived from waste incineration, of the kind which comprises spray drying a lime slurry in the hot flue gas, the amount of active lime used is from 1.5 to 2.5 times larger than the amount reacting with the acidic components of the flue gas; furthermore, ground blast-furnace slag is incorporated in the lime slurry in an amount that is equivalent to 30 to 100% by weight of the amount of calcium salts generated at the flue gas cleaning. An end-product is hereby obtained, which upon admixing with water, forms a concrete-like material with high mechanical strength and great ability to retain the pollutants present therein so that the product is suited for disposal in nature with a minimum risk of polluting water streams and ground water.

REFERENCES:
patent: 3634115 (1972-01-01), Minnick
patent: 3785840 (1974-01-01), Minnick et al.
patent: 3920795 (1975-11-01), Selmeczi
patent: 4124405 (1978-11-01), Quienot
patent: 4198380 (1980-04-01), Kobl
patent: 4251236 (1981-02-01), Fattinger et al.
patent: 4273747 (1981-01-01), Rasmussen
patent: 4317806 (1982-03-01), Leisegang
patent: 4341745 (1982-07-01), Zopff

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