【作者】 叶宏； 冯小琼； 陈军辉； 姜涛； 熊文朋； 梅林德；

【Author】 Ye Hong;Feng Xiaoqiong;Chen Junhui;Jiang Tao;Xiong Wenpeng;Mei Linde;Sichuan Academy of Environmental Sciences;Sichuan Province Environmental Protection Technology Engineering;

【机构】 四川省生态环境科学研究院； 四川省环保科技工程有限责任公司；

【摘要】 采用德图烟气分析仪和激光二极管技术测试四川省水泥企业NO_x和NH₃排放浓度,通过调研获取企业氨水用量、污染治理技术等信息,对比分析研究水泥企业NH3排放浓度、氨水用量、NO_x排放浓度、脱硝技术等,掌握四川省水泥行业NH₃排放特征及其影响因素。研究结果显示:1)四川省水泥企业NH₃排放浓度不容忽视,最高达502 mg/m³。2)氨水用量与NH₃排放浓度总体为正相关性,当NH₃排放浓度>10 mg/m³时,氨水用量基本≥4 kg/t熟料。3)单独采用SNCR脱硝技术进行NO_x深度治理（NO_x≤100mg/m³）,会增加氨水用量,进而增加水泥窑NH₃排放浓度。4)目前水泥企业NH₃排放缺少有效的监管手段,NH₃排放可能被低估。5)建议禁止单一采用SNCR脱硝技术开展超低排放改造,增加NH₃排放监测频次,适时推进NH₃在线监测,现有技术条件下NO_x超低排放改造限值不宜<100 mg/m³。更多还原

【Abstract】 Testo 350 gas analyzing instrument and WS-CRDS ammonia instrument were used to measure NO_x and NH₃ concentration of cement industry in Sichuan province, and activity date was collected through field investigations, in order to analyze NH₃ emission concentration, dosages of aqua ammonia, NO_x emission concentration, denitrification technology and so on. Results showed that 1) the NH₃ emission concentration of cement industry should not be ignored, which could up to 502 mg/m³. 2) There was a positive correlation between the dosages of aqua ammonia and MH₃ concentration, when NH₃ emission concentration was greater than 10 mg/m³, aqua ammonia consumption was basically greater than or equal to 4 kg/t. 3) If SNCR denitrification technology was used separately for NO_x deep treatment（NO_x≤100 mg/m³）, aqua ammonia consumption would be increased, and NH₃ emission concentration of cement kiln would be increased. 4) NH₃ emission from cement industry in Sichuan province lacked effective regulation measures, and NH₃ emission might be underestimated. 5) It was suggested to prohibit the use of SNCR technology alone to carry out NO_x ultra-low emission, increase the frequency of NH₃ emission monitoring, and timely promote NH₃ online monitoring. Under the existing technical conditions, the limit of NO_x ultra-low emission should not be lower than 100 mg/m³.更多还原