| 柴油机尿素SCR催化器优化设计 |
| |
| 引用本文： | 帅石金,张文娟,董红义,王建昕,王志.柴油机尿素SCR催化器优化设计[J].车用发动机,2007(1):44-47. |
| |
| 作者姓名： | 帅石金 张文娟 董红义 王建昕 王志 |
| |
| 作者单位： | 清华大学汽车安全与节能国家重点实验室,北京,100084 |
| |
| 基金项目： | 国家863计划子课题(2001AA64304003)，中国科学院知识创新工程项目(KZCX3-SW-430) |
| |
| 摘 要： | 运用计算流体力学手段对柴油机SCR催化器内排气流动、尿素水溶液喷射雾化、液滴蒸发、尿素热解和催化剂表面化学反应等整个NOx后处理过程进行了模拟,通过考察不同方案下载体前端面的尿素浓度分布及NOx转化率,研究了还原剂添加位置、喷嘴型式以及催化器入口扩张管形状等因素对催化器系统NOx转化性能的影响,研究结果为催化器的优化设计提供了指导依据。
|
| 关 键 词： | 柴油机 氮氧化物催化器 选择催化还原 计算流体力学 |
| 文章编号： | 1001-2222(2007)01-0044-04 |
| 修稿时间： | 2006-12-08 |
Optimal Design of Diesel Engine Urea-SCR Converter |
| |
| SHUAI Shi-jin,ZHANG Wen-juan,DONG Hong-yi,WANG Jian-xin,WANG Zhi.Optimal Design of Diesel Engine Urea-SCR Converter[J].Vehicle Engine,2007(1):44-47. |
| |
| Authors: | SHUAI Shi-jin ZHANG Wen-juan DONG Hong-yi WANG Jian-xin WANG Zhi |
| |
| Institution: | State Key Lab of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China |
| |
| Abstract: | With aid of Computational Fluid Dynamics(CFD) method,the flow process inside the diesel Urea-SCR DeNO_x catalytic converter was simulated,including the injection and atomization of urea solution,droplet evaporation,urea thermolysis and catalytic reactions in the monolith.The influence of injection position,injector shape and converter shape on DeNO_x performance was investigated by the NH_3 concentration uniformity and NO_x conversion.The results can provide some guidelines for the design and optimization of SCR systems. |
| |
| Keywords: | diesel engine NO_x catalytic converter SCR CFD |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
