中文摘要：

为控制水泥脱硝工程产生的氨排放问题,中国发布《水泥工业大气污染物排放标准》（GB 4915—2013）对水泥企业氨排放限值提出明确要求。但水泥脱硝设施同步配套的氨在线检测仪记录数据表明,多数水泥厂脱硝后的氨排放浓度远超过标准限值。为此,对照火电厂相关标准和技术规范,指出了水泥工业氨排放标准和技术规范文件中存在的问题。结合实际检测数据和国外相关文献,确认水泥工业存在＂本底氨＂排放,水泥原料、协同处理废弃物、生产工况变化是导致本底氨排放的主要原因。选择性非催化还原（SNCR）脱硝设施产生的氨逃逸将增加氨排放浓度,反应温度窗口、停留时间、氨/氮摩尔比（NSR）、喷射方案等均会影响氨逃逸浓度。优化水泥生产工艺、SNCR脱硝工艺或配套选择性催化还原（SCR）脱硝系统等方式可有效控制水泥厂本底氨及氨逃逸。

英文摘要：

In order to control the ammonia emission of cement denitrification facilities,the air pollutants emission standards for cement industry（GB 4915-2013）put forward the clear request for ammonia emission of cement industry.However,the simultaneous ammonia on-line monitor discovered that the ammonia emission of cement industry after denitrification greatly exceeded the limited value of current standard.Accordingly,the problems existed in ammonia emission standard for cement industry and technical specification files were analyzed based on the related thermal power plant control standard and technical reports,the definitions of＂ammonia emission＂and＂ammonia-slip＂were defined.By analyzing the emission sources of ammonia in cement industry and detection methods,combining the actual test data with the foreign literature,it was confirmed that the original ammonia emission existed in the cement industry and the cement raw materials,fuel,waste co-deposition process,production condition varieties were the reasons to cause original ammonia emission.Besides,the unreacted ammonia in the selective non-catalytic reduction（SNCR）denitrification facilities also causes ammonia-slip;reaction temperature window,residence time,molar ratio of ammonia and nitrogen（NSR）,ammonia injection scheme affect the concentration of ammonia escape.Hence,this paper purposes the ways to control the original ammonia and ammonia escape,including optimizing cement production process,SNCR denitrification process and carrying selective catalytic reduction（SCR）denitrifacation auxiliary system and so on.