都市ごみ焼却炉排ガスの接触還元脱硝法に関する研究 : 触媒劣化特性と再生方法の検討

概要

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Recently, the technique of catalytic reduction of NO_x has been experimentally used to purify dirty gas containing catalytic poisons and dust such as flue gas from a municipal refuse incinerator. However, many problems such as the deterioration of catalytic performance and regeneration technique for the catalyst remain unsolved for practical application. In this paper, in order to perform regeneration with the most energy conservation, heat treatment of 410 to 600℃ for 2 to 6 hours was studied using an electric furnace and the recovery of twenty percent of NO_x removal efficiency was obtained. Regeneration techniques for catalysts are discussed on the basis of the results of the change of micropore volume, surface area and accumulation of Na, K, Ca, Fe, in the catalyst. The effects of HCl, SO_2 contained in flue gas on catalyst performance are also discussed by using the result of the compulsory poisoning test.
1991-01-25