REVIEW ARTICLE


Numerical Simulation to Reduce NOx of Diesel Engine Urea-SCR System



Zhang Hui1, Xu Boyan2, Wang Chuansheng*, 1
1 School of Mechanical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
2 School of Mechanical Engineering, Shandong Jianzhu University, Jinan 250101, China

Article Information


Identifiers and Pagination:

Year: 2014
Volume: 8
First Page: 643
Last Page: 647
Publisher Id: TOMEJ-8-643
DOI: 10.2174/1874155X01408010643

Article History:

Received Date: 08/01/2015
Revision Received Date: 15/01/2015
Acceptance Date: 16/01/2015
Electronic publication date: 31/12/2014
Collection year: 2014

© 2014 Hui et al

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the School of Mechanical Engineering, Qingdao University of Science and Technology, Singling Road, Qingdao, 266042, China; Tel: 13608966169; E-mail: wcsmta@qust.edu.cn


Abstract

By using computational fluid dynamics and chemical reaction dynamics method, the mathematical model of SCR (selective catalytic reduction) system was established. On the basis of the verified feasibility, by CFD numerical analytical method, the reducing agent inside the catalysts concentration distribution was compared under different added urea schemes. Jet direction and the form of fuel injector were studied on the basis of the effects of reducing agent concentration distribution. The simulation result shows good agreement with the experimental data. The simulated results can be utilized in optimization design of the diesel SCR catalyst.

Keywords: NO, numerical simulation, Urea-SCR, Grid Model, AVL exhaust gas analyzer, SCR catalyst.