SCR反应物理化学过程模型及验证  

Physical and Chemical Process Model of SCR and Its Verification

作　　者：贾思峰[1] 管斌[1] 刘柯[1] 李忠照[1] 林赫[1] 黄震[1] 

机构地区：[1]上海交通大学动力机械及工程教育部重点实验室,上海200240

出　　处：《车用发动机》2016年第5期1-4,16,共5页Vehicle Engine

摘　　要：针对柴油机选择性催化还原(SCR)脱硝技术,建立了零维SCR反应器数学模型,并利用VC++编写了仿真计算软件。通过小样台架试验测试了钒基催化剂在不同温度、空速、含氧量、NO_2与NO_x的摩尔比以及氨氮比条件下的NO_x转化率,并与计算结果进行对比。结果表明,模型计算值与试验结果具有很好的一致性,低温条件下,空速越低,NO_2与NO_x的摩尔比越大,NO_x的转化率越高。Based on SCR DeNO x technology of diesel engine ,a zero‐dimension mathematic model of SCR reactor was built and the calculation software was compiled with VC ＋ ＋ software .The catalyst conversion performances of vanadium‐based cat‐alyst under different temperatures ,space velocities ,oxygen contents ,NO2 /NO x molar ratios and NH3 /NO x ratios were in‐vestigated and compared with the calculated results .The results show that the calculated results agree well with the experimen‐tal results .At low temperature , smaller space velocity and larger NO2 /NO x molar ratio will lead to higher conversion efficiency of NO x .

关 键 词：选择性催化还原 数学模型 仿真 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]