| 摘要 |
PROBLEM TO BE SOLVED: To perform a stable operation for a long period by preventing the closure of an opening part of a heat storage material through which untreated waste gas flows in a heat storage type waste gas treatment device. SOLUTION: The heat storage type waste gas treatment device comprises a furnace 4 for treating the untreated waste gas including VOC at high temperature, a heat storage layer 3 of honeycomb shape in section for preheating the untreated waste gas and removing heat of treated waste gas and a distributing valve 2 for distributing the untreated waste gas to the high temperature heat storage layer. A pressure loss part of a waste gas passage is detected in accordance with the differential pressure of the heat storage layer, and the rotation of the distributing valve 2 is controlled to adjust the flowing time of the high temperature treated waste gas flowing through the heat storage layer 3, so that the pressure loss part is heated to 450 to 500 deg.C. Thus, adhering silicone oil is rapidly oxidized to become silica particles. The silica particles can be simply removed by a blower to suppress the closure of the waste gas passage with a stable operation. |
