EXHAUST GAS TREATMENT METHOD, EXHAUST GAS TREATMENT DEVICE, AND EXHAUST GAS TREATMENT SYSTEM

摘要

An exhaust gas treatment system provided with an exhaust gas treatment device (1a), the exhaust gas treatment system having: a reaction unit (20) for causing a gas purification agent and an acidic gas to react, the reaction unit (20) being provided with a gas purification agent addition means (21) for adding a gas purification agent to an exhaust gas containing the acidic gas and having a temperature of at least 190°C; and a removal unit (30) provided with a bag filter for removing the reaction product obtained by the reaction unit (20) from the exhaust gas; the gas purification agent containing slaked lime having a specific surface area as measured by the BET method of at least 25 m2/g and a pore volume as measured by the nitrogen desorption BJH method of at least 0.15 cm3/g. In this exhaust gas treatment system, an exhaust gas purification catalyst may be supported on the bag filter.