脱硝催化剂失活及再生实验  

Experimental study on deactivation and regeneration performance of denitration catalysts

作　　者：王丽朋[1] 陈宝康[1] 姚燕[1] 杨晓宁[1] 孔凡海[1] 

机构地区：[1]西安热工研究院有限公司苏州分公司,江苏苏州215153

出　　处：《热力发电》2017年第11期67-72,共6页Thermal Power Generation

基　　金：中国华能集团公司总部科技项目(HNJK14-H01)~~

摘　　要：以某电厂失活和再生催化剂为研究对象,采用全尺寸催化剂性能检测台和比表面积仪、X射线荧光光谱仪、X射线衍射光谱仪、扫描电镜等仪器对催化剂进行了性能检测和表征分析。结果表明:2层催化剂经过24 000 h脱硝运行后,不能满足脱硝效率≥83.0%且氨逃逸量≤3?L/L的设计要求,催化剂相对活性为0.70;经再生处理后,催化剂孔道得到了疏通,各项指标恢复到新催化剂的水平,2层催化剂满足设计脱硝效率和氨逃逸量要求的同时,有效控制了SO2/SO3转化率;再生后催化剂相对活性提高到0.99,脱硝性能得到明显改善。Taking the deactivated and regenerated denitration catalysts used in a power plant as the research objects, the full-size catalyst performance test bench and several instruments such as XRF, BET, SEM and XRD were employed to carry out performance test and characterization analysis for the catalysts. The results show that, after 24 000 hours＇ operation, two layers of the catalysts could not satisfy the design requirements that the de-NOx efficiency should be higher than 83% and the ammonia escape rate be below 3 μL/L. The relative activity value of the deactivated catalyst was 0.70. After regeneration, the catalyst pores were cleared and the performance indexes of the regenerated catalyst returned to a level of new catalyst. The de-NOx efficiency and ammonia escape rate of the two layers of catalysts met the performance requirements. The SO2/SO3 conversion rate was well controlled. The relative activity value of the regenerated catalyst increased to 0.99 and the denitration performance was significantly improved.

关 键 词：脱硝催化剂 失活 再生 脱硝效率 氨逃逸 活性 SO2/SO3转化率 

分 类 号：X115[环境科学与工程—环境科学]