The petroleum is first heated in a boiler to separate the smaller hydrocarbons with low boiling points from the larger hydrocarbons with high boiling points.
石油先在一蒸发器内加热，从高沸点的大分子碳水化合物中分离出低沸点的小分子碳水化合物。
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Biomass biomass boiler precipitator fuel is a renewable source of carbon, with great production, wide distribution, low sulfur, low nitrogen, fast growth, low carbon dioxide emissions.
This paper emphatically describes how to lift its fume exhaust temperature under low load running of a boiler so as to reduce low temperature corrosion.