Details

Autor(en) / Beteiligte

• Jiang, Lei
• Ge, Yun-Shan
• Shah, Asad Naeem
• Tan, Jian-Wei

Titel

3D simulation research on urea-SCR DeNO(x) catalyst for diesel engine

Ist Teil von

• Journal of Beijing Institute of Technology, 2009-12, Vol.18 (4), p.428-432

Erscheinungsjahr

2009

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• In order to reduce oxides of nitrogen (NO(x)) emanated from a diesel engine, a comprehensive urea selective catalyst reduction (SCR) DeNO(x) catalyst was modeled in which numerical simulations were used as a complementary tool for the experimental investigations to make the design decisions, and hence shorten the development process. In this approach, relevant conversion reactions were studied in 1D model, and the parameters obtained in this way were transferred to 3D simulations. According to the results of the study, the conversion of NO and NO(2) increased with the increase in monolith solid temperature. With the increase in the ratio of NO(2)/NO, the conversion of NO, NO(2) and NO(x) increased resulting in maximum reduction of NO(x) at the ratio of 1; beyond this ratio, the conversion of NO(2) and NO(x) decreased; however, NO continued to be converted till the ratio was 1.8. The conversion of NO(x) decreased with the increase in space velocity.