FIELD: chemical engineering. SUBSTANCE: emission gas is brought into contact with alkali wash solution having such concentration that high-fluorine carboxylic acid salts precipitated as separate phase. Apparatus comprises scrubber, supply pipeline for emission gas being treated, alkali wash solution-supply pipeline, settler with overflow leading through a pipeline to collector, and emission gas release pipeline. EFFECT: enhanced process efficiency. 10 cl, 1 dwg
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