METHOD FOR DEODORIZING BY COMBUSTION OF EXHAUST GAS CONTAINING ORGANIC SILICON

PROBLEM TO BE SOLVED: To achieve a deodorization by combustion of an exhaust gas containing organic silicon inexpensively without clogging a heat storage body and a heat exchanger by a method wherein the organic silicon in the exhaust gas is removed by adsorption and then, the exhaust gas is heated up to a specified temperature to perform a deodorization by combustion. SOLUTION: After the removal of foreign matters with a filter 11, an exhaust gas (20 deg.C) containing organic silicon, toluene and the like is supplied to a pretreating agent 14 comprising a porous adsorbent mainly composed of an activated charcoal by a blower 12 to let the pretreating agent 14 adsorb and remove the organic silicon while the organic silicon passes through the pretreating agent 14. Thereafter, with a combustion deodorizing apparatus during the normal operation the exhaust gas undergoes a heat exchange with a treating gas by a heat exchanger 13 for preheating to be preheated up to about 190 deg.C and reaches a platinum catalyst 16. As the temperature of the exhaust gas is already raised to 190 deg.C necessary for oxidizing reaction with the platinum catalyst 16, combustible components such as organic solvent in the exhaust gas is burned with the action of the platinum catalyst to make a treating gas of about 350 deg.C. The treating gas thus obtained is subjected to a heat exchange with the exhaust gas by the heat exchanger 13 for pretreating and then, discharged from a stack 17.