将石油焦与烟煤掺混在煤粉锅炉里进行燃烧，使燃烧特性变得复杂，甚至使锅炉燃烧效率下降。
When the pulverized coal blended with petroleum coke is burned in the boiler, the combustion characteristics would becomecomplicate, even the combustion efficiency of boiler would decline.
石油焦的燃烧特性处于烟煤和无烟煤之间。
The combustion characters of petroleum coke were between those of soft coal and anthracite .
石油焦的成份与煤差异很大，其燃烧特性不同于煤。
The constituent of petroleum coke is different from coal, and it has different combustion characteristics from coal.
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