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基于生物质直燃发电技术,以煤作为主要添加剂进行现场工业环境试验,研究生物质直燃锅炉掺烧不同品种、不同比例煤后污染物排放特性及对锅炉腐蚀性的影响,以确定掺烧煤的品种和最佳比例。研究结果表明:相对于纯燃生物质,在掺烧煤后飞灰中的Cl元素含量降低、灰熔点升高,进而可以消除高温受热面飞灰的沉积问题,有效解决固相碱金属氯化物造成的高温腐蚀;同时随着掺煤比例的提高,NOx和SO2排放量均有不同程度的增加。
Based on the biomass direct-fired power generation technology, an on-site industrial environmental test was conducted using coal as the main additive to study the pollutant emission characteristics and impact on boiler corrosivity after burning different types of coal-fired biomass fired boilers and different proportions of coal, The variety and the best ratio. The results showed that compared with pure biomass, the content of Cl in the fly ash decreased and the ash melting point increased compared with the pure biomass, which further eliminated the deposition of fly ash in the high temperature heated surface and effectively solved the problems of solid phase alkali metal chloride Caused by high temperature corrosion; at the same time with the increase of the proportion of coal, NOx and SO2 emissions have varying degrees of increase.