20415 高温窒素プラズマによるディーゼル排ガスの浄化(OS3 エンジン燃焼と排気浄化)

概要

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A technique for removing the NOx contained in combustion exhaust gas has been developed by using radicals produced in the mixing arc plasma. By feeding the diesel exhaust from engine into (N_2+diesel oil) arc plasma torch, diesel oil and N_2 radicals such as NH, HC, N, H are produced, and these radicals are mixed in a reactor with the exhaust gas. The NOx decreases as a result of the formation of the innocuous products N_2, H_2O and CO_2 if O_2 is contained in the gas. Under present experimental conditions, diesel oil reacts as reduction agency such as the thermal De-NOx process, the oxidation of diesel oil are not expected. In the case of t O_2 rich gas, NOx increases with increasing input power to plasma. The effects of input power, Diesel oil/NOx, treated gas flow rate and the distance from nozzle exit to exhaust pipe L/d on the NOx removal rate are investigated experimentally.
一般社団法人日本機械学会の論文
2005-03-17