Importance

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Abstract

The invention relates to a method for controlling a fume treatment center (FTC) (23), scrubbing the baking fumes from a rotary baking furnace (1), in which the fumes are drawn in through at least one suction manifold (11) of the baking furnace (1) and collected in a duct (20, 20′) that conveys said fumes to the fume treatment center (23). The fume treatment center includes a tower (24) which sprays water into the fumes in order to cool same and a least one reactor (25) for the physico-chemical neutralization of the fumes, comprising contact with a reagent powder, such as alumina, followed by filtering (36) of the loaded reagent and the fume dust and recycling in the reactor (25) of at least one fraction of the filtered reagent and mixing of the same with fresh reagent. The method includes at least the following steps: the flow of water in the cooling tower (24) is adjusted and/or the flow and/or recycling rate of the reagent in the reactor (25) is adjusted as a function of at least one parameter indicating the level of pollution of the fumes at the inlet of the fume treatment center (23). The invention can be used for baking carbon cathodes and anodes for aluminum electrolysis.

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First Claim