Method and apparatus for the thermal treatment of waste materials
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United States of America Patent
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Dec 11, 1990
Grant Date -
N/A
app pub date -
Oct 2, 1989
filing date -
Oct 1, 1988
priority date (Note) -
Expired
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Abstract
In a method for the thermal treatment of wastes (combustible, poorly combustible and incombustible), especially those which cannot be harmlessly dumped, air is preheated in a first regenerator (2) to a temperature of 800.degree. to 1200.degree. C. and fed through a first combustion chamber (7) to a melting vessel (6) into which wastes are dumped for thermal treatment. The flue gas from the melting vessel is fed through a second combustion chamber (7') to a second regenerator (2'). The two regenerators contain sections for thermal storage (3, 3'), for the adsorption (4, 4') of flue gas impurities and for the further treatment (5, 5') of the flue gas. The air and flue gas flow is reversible, i.e., air preheated in the second regenerator (2') is fed to the melting vessel (6) through the second combustion chamber (7'). The flue gas is fed through the first combustion chamber (7) to the first regenerator (2).
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