ガス直通コロナ放電による燃焼排ガス中の窒素酸化物除去特性

概要

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In order to develop methods of plasma injection for removing pollutants such as NO_x and SO_x contained in combustion exhaust gas, we have investigated radical formation in nitrogen arc plasma, and reported that the NO_x removal efficiency has a maximum value in the range of low electrical power for plasma operated under stable conditions. In this paper, in order to further economize electrical energy in actual use, the simulated exhaust gas (N_2+O_2+CO_2+NO) is excited by passing through a corona discharge tube in a high electric voltage field. The NO is oxidized to NO_2, and OH radical generated from H_2O contained in gas reacts with NO_2, and NO concentration decreases as a result of generation of HNO_3. The effects of H_2O, O_2 and CO_2 contents on the NO_x reduction rate are discussed experimentally. The NO_x reduction rate of about 25% is obtained under the input power of 45 watts.
一般社団法人日本機械学会の論文
1995-11-25