プラズマ複合プロセスに基づくディーゼル排気微粒子・NOxの浄化技術

概要

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New atmospheric-pressure nonequilibrium plasma combined exhaust gas aftertreatment technologies are developed without using precious metal catalysts and harmful ammonia etc. Two types of innovative environmental protection systems (a dry system and a wet system) , which enable to produce ultra low CO2, PM (Particulate Matter) , NOx emissions, fuel consumption and low cost, are realized for diesel hybrid engine, marine engine and combustion boiler applications. This paper mainly reviews the principles of these systems and some recent experimental results. The effective or apparent required plasma energy can be decreased greatly using these system. It is confirmed for a 5.5 kW diesel engine exhaust that the NOx complete reduction and the DPF continuous regeneration are possible using the dry system. It is also confirmed for a cylindrical smoke tube boiler (flow rate of heavy oil fuel = 52 L/h) that more than 80 % NOx reduction is achieved using the wet system.
2006-09-20