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天然石油的主要成份,是各种分子构造不同的碳氢化合物,在化学上,我们总称之为烃。另外还有一些氮、硫、氧的化合物以及水份、盐类、泥砂等杂质。所以初从油井里取出的原油,一定需要经过精炼,分成各种产品,才能加以利用。精炼原油的第一步就是分溜。所谓分溜,就是利用原油中所含各种碳氢化合物分子的沸点不同,在不同的温度下,加以蒸发,然后再将蒸发出来的汽体冷凝成为液体。大致说,石油中所含的碳氢化合物,
The main components of natural petroleum are various hydrocarbon compounds with different molecular structures. Chemically, we call them hydrocarbons. There are also some nitrogen, sulfur, oxygen compounds as well as moisture, salts, mud and other impurities. Therefore, crude oil that was first taken out of an oil well must be refined and separated into various products before it can be used. The first step in refining crude oil is sub-slip. The so-called sub-slip is to use the boiling point of various hydrocarbon molecules contained in crude oil, evaporate at different temperatures, and then condense vaporized gas into liquid. Broadly speaking, hydrocarbons contained in oil,