石油的组成与性质（Composition and properties of petroleum）.docVIP

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石油的组成与性质（Composition and properties of petroleum）.doc

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石油的组成与性质（Composition and properties of petroleum）

石油的组成与性质（Composition and properties of petroleum） This article is contributed by ljohnson53de DOC documents may experience poor browsing on the WAP side. It is recommended that you first select TXT, or download the source file to the local view. Composition and properties of petroleum 2007-6-21 13:46:03 International Petroleum network users comments also known as crude oil is extracted from deep underground in the dark brown viscous liquid combustible. Oil is a mixture of ancient creatures in the sea or lake formed after a long evolution, and coal as part of fossil fuel. The oil properties of different because of the producing areas. The density of 0.8 ~ 1 g / cm 3 a wide range of viscosity, freezing point, difference (30 ~ -60 ~ C), boiling point range at room temperature to above 500 DEG C, soluble in various organic solvents, insoluble in water, but can form the emulsion with water. The chemical composition of oil is mainly carbon (83% ~ 87%), hydrogen (11% ~ 14%), the rest of sulfur (0.06% ~ 0.8%), nitrogen (0.02% ~ 1.7%), oxygen (0.08% ~ 1.82%) and trace metals (nickel, vanadium, iron, etc.). The main component of hydrocarbons formed by carbon and hydrogen in the form of oil, about 95% ~ 99%, sulfur, oxygen and nitrogen compounds Harmful to the petroleum products in petrochemical industry should be removed. Different areas of the petroleum hydrocarbon structure and the proportion is big, but are mainly alkanes, cycloalkanes and aromatic hydrocarbon class three. Usually in alkane oil called paraffinic oil; in cycloalkanes, aromatic hydrocarbon based said ring hydrocarbon oil; between two of the intermediate base oil. The main characteristics of crude oil in China is more waxy, high freezing point, low sulfur content, nitrogen content was medium, nickel, vanadium content is very small. In addition to individual oil, crude oil and gasoline fraction less residue composition of 1/3., different types of petroleum processing. The method is different, is also different