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生物质混煤的灰分特性对混烧生物质锅炉的安全运行具有重要意义,以麦秆、杨木屑与典型烟煤分别制成单生物质和双生物质混煤,根据混煤中生物质的配比采用了分段式灰化温度制取灰样,并对灰样作熔融特性实验研究,找出灰熔点随生物质配比的变化规律;在电站锅炉上进行生物质与煤的混燃试验,对收集的锅炉飞灰作熔融特性分析,将结果与实验室的结论作比较,结果表明:两者有较好的一致性,且随生物质配比提高总体上会使混煤灰熔融温度降低。
The ash characteristics of biomass mixed coal is of great significance for the safe operation of mixed-fired biomass boilers. Single-biomass and double-biomass mixed coal are made from wheat straw, poplar wood and typical bituminous coal respectively. According to the ratio of biomass The ash sample was prepared by the segmented ashing temperature, and the melting characteristics of the ash sample were experimentally studied to find out the change rule of the ash melting point with the biomass ratio. The coal- The melting characteristics of the collected boiler fly ash were analyzed and the results were compared with the laboratory conclusions. The results showed that the two had good consistency, and with the increase of biomass ratio, the melting temperature of the mixed coal ash would decrease .