300MW燃煤锅炉污泥掺烧现场试验关键技术研究与工程应用  

Key Technology Research and Engineering Application of the Co-combustion of Sludge and Coal in a 300 MW Coal-fired Boiler

作　　者：冯炳全 李德波 孙超凡 冯永新 梁汉贤 苏湛清 张渭添 Feng Bingquan;Li Debo;Sun Chaofan;Feng Yongxin;Liang Hanxian;Su Zhanqing;Zhang Weitian(Runqing Environmental Water(Shenzhen)Co.,Ltd.,Shenzhen 510060,Guangdong Province,China;China Southern Power Grid Electric Power Technology Co.,Ltd.,Guangzhou 510080,China)

机构地区：[1]润清环保水务(深圳)有限公司,广东深圳510060 [2]南方电网电力科技股份有限公司,广州510080

出　　处：《发电设备》2021年第2期131-136,共6页Power Equipment

基　　金：国家自然科学基金重点项目(51376161)。

摘　　要：针对某电厂300 MW掺烧生活污泥的1号锅炉开展了锅炉燃烧特性理论研究、现场掺烧试验,评估了不同掺烧比例对锅炉燃烧特性、污染物排放的影响。结果表明:掺烧40%含水率的生活污泥,掺烧比例在10%以下时,理论燃烧温度降低了7 K,污泥掺烧对于煤的元素成分影响不大,对飞灰浓度影响不大,不会造成省煤器等受热面的磨损加剧,烟囱出口处NO_(x )、SO_(2)和粉尘排放浓度都能满足超低排放要求,脱硫石膏、脱硫废水、脱硫浆液、飞灰和炉渣中重金属排放浓度满足相关环保标准的排放要求。For a 300 MW sludge and coal co-fired NO.1 boiler unit, theoretical study on the combustion characteristics and mixed test were carried out, the effects of different mixing ratio on combustion characteristics and pollutant emission of boiler were evaluated. The results show that when the mixing burning ratio is below 10%, co-combustion of sludge with 40% moisture content will lead to 7 K decrease of combustion temperature. The influence on the fuel characteristic and ash formation characteristic are negligible. There is no significant difference wear detected on the economizer heating surface. For the pollutant emissions, the release of NO_(x) , SO_(2) and dust meet the emission requirements and the environmental protection standard. The heavy metals in the desulfurization gypsum, desulfurization wastewater, desulfurization slurry, fly ash and slag meet the emission requirements and the environmental protection standards.

关 键 词：污泥掺烧 重金属 锅炉效率 

分 类 号：TK224.11[动力工程及工程热物理—动力机械及工程]