我厂有两台上海锅炉厂生产的SG—400—50412型超高压中间再热锅炉,原设计烧无烟煤,按贫煤校核。于1980年9月和1981年7月分别投产后,基本燃用单一煤种——淄博贫煤。几年来,飞灰可燃物比较稳定,一般在5％左右。自1986年改烧山西西山煤后,飞灰可燃物逐渐上升,1~#炉最高达12％,平均为8.84％,2~#炉平均6.44％。严重影响机组的经济性能。山东淄博煤与山西西山煤种特性见表1。 Our factory has two sets of SG-400-50412 UHP intermediate reheat boilers produced by Shanghai Boiler Factory. The original design was anthracite, which was checked by lean coal. After they were put into operation in September 1980 and July 1981, respectively, they basically consumed a single coal type, lean coal in Zibo. In recent years, fly ash combustible material is relatively stable, generally about 5%. Since the conversion of Shanxi Xishan coal in 1986, the fly ash combustibles gradually increased, up to 12% in 1 ~ # furnace, with an average of 8.84% and 2 ~ # furnace average 6.44%. Seriously affect the unit’s economic performance. Shandong Zibo coal and Shanxi Xishan coal characteristics shown in Table 1.