COATING EXHAUST GAS TREATMENT METHOD AND COATING EXHAUST GAS TREATMENT APPARATUS

摘要

PROBLEM TO BE SOLVED: To reduce a facility cost and a maintenance burden in a coating exhaust gas treatment apparatus.SOLUTION: In a coating exhaust gas treatment apparatus where a powder agent is dispersed to exhaust air EA from a coating chamber 2 by a powder dispersion means 11 and a filter coating layer consisting of a powder agent accumulation layer is formed on the surface of a filter 8: the degree of powder agent burden corresponding to the coating conditions of each object W to be coated being sequentially coated by spray coating in the coating chamber 2 is set; and the powder agent repeatedly used in an exhaust treatment air duct fs is changed to a fresh powder agent when the integrated value of the degree of the powder agent burden accompanying the sequential coating of the object W to be coated exceeds a set threshold.SELECTED DRAWING: Figure 1