%0 Journal Article
%T 循环流化床锅炉超低排放技术研究
%A 吴优福
%J 洁净煤技术
%D 2017
%X 针对循环流化床锅炉污染物生成量较低的特点,分析了锅炉SO_2生成量的影响因素,不同脱硫工艺的优缺点,结合试验研究结果和工程应用实例提出了循环流化床锅炉实现SO_2超低排放的技术。结果表明:循环流化床锅炉SO_2生成量取决于煤的硫分中可燃硫所占比例、煤灰中CaO等碱金属氧化物含量和锅炉运行参数,运行参数中床温影响最大;通过优化锅炉运行参数降低SO_2生成量,炉内干法高效脱硫和烟气脱硫相结合的深度脱硫技术可以实现SO_2超低排放的目标,并具有更高的调节灵活性和运行可靠性;烟气脱硫工艺的选取上,CFB-FGD半干法脱硫工艺相对于石灰石-石膏湿法脱硫工艺更具有经济优势。 According to the characteristics of low pollutant content of circulating fluidized bed boiler,this study analyzed the factors influencing on the production of boiler SO_2 and compared the advantages and drawbacks of different desulfurization processes.Based on the experimental results and engineering application examples,the paper put forward the strategy for realizing the ultra low emission of SO_2. Results show that the actual emission value of SO_2 depends on the proportion of totally combustible sulfur in coal and the content of alkali metal oxide( such as Ca O) in coal ash as well as the operating parameters of the boiler.Among the operating parameters,the bed temperature is the most important factor.By using the reasonable operation parameters,optimizing the dry desulfurization process and combining with flue gas desulfurization process can achieve the goal of deep desulfurization.Regarding to the selection of flue gas desulfurization process,CFB-FGD semi-dry desulfurization process has a greater economic advantage than the Limestone-gypsum wet desulfurization process
%K 循环流化床锅炉
%K SO2
%K 超低排放
%K 深度脱硫 circulating fluidized bed boiler
%K SO2
%K ultra low emission
%K deep desulfurization
%U http://www.jjmjs.com.cn/WKD/WebPublication/paperDigest.aspx?paperID=cc021417-9b5c-4032-997e-c078b3fe606e