部分分解アンモニア添加によるディーゼル排気中の窒素酸化物の低減法

概要

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A chemical process capable of reducing nitric oxide from the diesel engine exhaust is studied. In this process, an amidogen (NH_2) -containing ammonia gas is mixed with the exhaust gas to ensure destruction of NO by NH_2 at a relatively low temperature level. Theoretical predictions based on the rate-controlled partial equilibrium method show that the addition of only a small amount of NH_2 may effectively reduce nitric oxide in the exhaust gas. The feasibility of the proposed process is demonstrated on a miniature system consisting of an NH_2 producer and a mixing chamber into which a part of exhaust gas from a diesel engine is introduced. Results show that a significant reduction of nitric oxides is achieved at a mixing-chamber temperature higher than 750 K. Furthermore, the practical feasibility in controlling NO_x is compared with that of the cianuric-acid method proposed by Perry and Siebers.
一般社団法人日本機械学会の論文
1990-03-25