水泥窑低温SCR脱硝技术中试研究  

Pilotscale study of selective catalytic reduction of NO_x at low temperature in cement kiln

作　　者：刘海兵[1] 顾军[1] 李威 竹涛[3] Beijing Building Materials Academy of Science Research(State Key Laboratory of Solid Waste Reuse for Building Material,Beijing 100041,China)

机构地区：[1]北京建筑材料科学研究总院固废资源化与节能建材国家重点实验室,北京100041 [2]北京金隅太行前景水泥有限公司,北京102471 [3]中国矿业大学(北京),北京100083

出　　处：《水泥》2018年第8期47-51,共5页Cement

基　　金：2015年度首都蓝天行动科技示范工程后补助项目(Z151100001515008)

摘　　要：以锐钛型工业级蜂窝状催化剂为材料,在新型干法水泥生产线窑尾布袋除尘器后进行了10 000 m^3/h的低温选择性催化还原脱硝(SCR)试验研究。结果显示,空速对脱硝效率的影响受制于催化剂活性温度,5 000h^(-1)空速值设计是可行的。温度是SCR脱硝的关键因素。脱硝效率随着温度升高而增高,130℃时脱硝效率大约30%,150℃脱硝效率达50%,170℃可实现80%以上脱硝效率,稳定实现100 mg/Nm^3以内排放,氨逃逸浓度小于1 ppm。The 10 000 m3/h pilot SCR experiment on low-temperature and low dust was conducted by using industrial grade, anatase type, cellular catalyst in NSP kiln end after bag filter. The results showed that the effect of SV on denitration efficiency was constrained by the active temperature of the catalyst, and the SV value of 5 000 h-1 was feasible. Temperature was a key factor in SCR denitration, and the efficiency increase with temperature increase. The denitrification efficiency was 30% and 50% respectively in 130 ℃ and 150 ℃.When the reaction temperature was 170℃, the denitrification efficiency would steady over 80%, the NOx emission concentration was stable less than 100mg/m3, and the ammonia escape was less than 1 ppm.

关 键 词：水泥窑 SCR 低温脱硝 氨逃逸 催化剂 

分 类 号：X781.5[环境科学与工程—环境工程]