摘要
选择性催化还原(selective catalytic reduction,SCR)脱硝反应塔入口气流不均匀会导致脱硝率下降、氨逃逸率增大以及加速部分催化剂老化等问题,对此,采用Flunt数值模拟方法,对某300 MW机组SCR脱硝反应塔入口结构进行优化。模拟结果表明,反应塔入口宜采用三角形入口,入口处设置垂直导流板,之前还需设置倾斜导流板,这种结构能使进入反应塔的烟气流动均匀和稳定。
Ill-proportioned air flow at entrance of selective catalytic reduction （SCR） denitration reactor may cause reduction of denitration rate, increase of escapement rate of ammonia and acceleration of some catalysts. Therefore, Flunt numerical simulation method is adopted for entrance structure optimization of selective catalytic reduction denitration reactors. The simulation result shows that the entrance of reactors should be triangle-structured, vertical skirt plate should be installed at the entrance and in front of which upturned skirt plate should be mounted. The structure may enable the air flow to be proportioned and stable.
出处
《广东电力》
2012年第1期84-86,共3页
Guangdong Electric Power
