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  • Summary & Details

A study on reductants pulse supply to a NH3-SCR catalyst toward NOx conversion improvement and reductants reduction (First Report)

NH3-SCR触媒における還元剤パルス供給によるNOx浄化率向上及び還元剤供給量削減に関する研究(第1報)

Detailed Information

Category(J)研究論文

Translation

Category(E)ResearchPaper
Author(J)1) 関 圭一朗, 2) 上山 陸人, 3) 草鹿 仁
Author(E)1) Keiichiro Seki, 2) Rikuto Ueyama, 3) Jin Kusaka
Affiliation(J)1) 早稲田大学, 2) 早稲田大学, 3) 早稲田大学
Abstract(J)尿素SCR触媒システムにおいて,NOx浄化率予測モデルを用いて還元剤の能動的制御の有用性について調査した.浄化率の低い低温度域に着目し,振幅及び周波数の制御を行ったところ浄化率が向上する傾向が得られた.その際,硝酸アンモニウムの生成を抑制しつつアンモニアの被覆率を上げるかが重要であることを見出した.

Translation

Abstract(E)In this study, the active control of reductant pulse supply was investigated using the SCR reaction model to improve the NOx purification ratio and reduce the amount of reductant supply in a urea-SCR catalyst system. The improvement was obtained when the active control of amplitude and frequency of NH3 pulse supply was carried out at low temperature. In this case, it was important to increase the ammonia coverage while suppressing the formation of ammonium nitrate.

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