Numerical calculation and analysis of diesel Urea-SCR system

2018 International Conference of Green Buildings and Environmental Management

土木建筑工程;生态环境科学

Jiao, Yunjing^1 ; Bai, Yashuang^1 ; Zheng, Qingping^2

Department of Mechanical and Electrical Engineering, North China Institute of Aerospace Engineering, Langfang

065000, China^1

School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin

300030, China^2

关键词: After treatment devices;    Calculation models;    Catalytic reduction;    Diesel engine emissions;    Exhaust temperature;    Numerical calculation;    One-dimensional simulations;    Urea-selective catalytic reduction;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/186/4/012023/pdf
DOI  :  10.1088/1755-1315/186/4/012023

来源: IOP

【 摘 要 】

The urea selective catalytic reduction (Urea-SCR) system is a after-treatment device to control diesel engine emissions. On the basis of the experiment, a one-dimensional calculation model for the catalytic reduction of the engine is established. Through the one-dimensional simulation, the effect factors such as urea injection, exhaust temperature and length of catalysis converter in the diesel engine Urea-SCR system on NOx conversion efficiency are studied. This study provides a theoretical basis for the selection and matching of catalytic converters.