尿素SCR催化反应中气态氨供给速率计算方法研究

发布时间：2018-07-05 14:35

  本文选题：内燃机 + 尿素SCR　； 参考：《内燃机工程》2017年05期

【摘要】：在研究选择性催化还原(SCR)反应的气态氨平衡关系及催化剂动态转化效率-储氨量关系的基础上,提出了一种基于催化剂台架试验-性能模拟计算结果对比的台架试验条件下SCR催化反应体系中气态氨供给速率、尿素存积速率的定量计算方法。使用该方法针对特定SCR台架试验数据进行的计算,结果表明:在催化剂入口排气温度300℃、空速40 000h-1时,尿素水溶液分解存在一定程度滞后,但最终分解较为完全。这为研究SCR台架评价中尿素水溶液的分解条件及其对评价结果的影响提供了工具。
[Abstract]:Based on the study of the gaseous ammonia equilibrium in the selective catalytic reduction (SCR) reaction and the relationship between the dynamic conversion efficiency of the catalyst and the amount of ammonia storage, A quantitative calculation method of ammonia supply rate and urea accumulation rate in SCR catalytic reaction system was proposed based on the comparison of the results of catalyst bench test and performance simulation. The results show that the decomposition of urea aqueous solution is delayed to a certain extent when the exhaust temperature of catalyst inlet is 300 鈩，

本文编号：2100527