关键词: 焦化, 聚合, 碳氢化合物

Abstract: At the molecular level, advances of coke formation rule of heavy oil were reviewed.The relation between four components of heavy oil and coke formation was induced, so was the research in the coke formation of heavy oil model compounds.For group constituents of heavy oil, researches show that proper amounts of saturates lead to high-quality coke; the quality of coke gets worse with more rings; resins and asphaltenes coke easily and the quality of coke is bad; heteroatoms lead to bad coke, but hazard extent of heteroatoms is different.For heavy oil model compounds, researches show that thermal condensation of toluene is hard to react; from naphthalene to pyrene, the condensation difficulty becomes lower and lower;because of side chains, the quality of dimethylnaphthalene coke is worse than that of naphthalene; because of its special spatial configuration, 1, 2, 4, 5-tetramethylbenzene cokes easily and quality of the coke is pretty good; the worse the quality of heteroatom model compound coke, the worse the quality of aromatics with that kind of heteroatom model compounds.With the development of the ultra high resolution mass spectrometry technology, there are more possibilities that aromatics thermal condensation reaction mechanism will be explored further.

Key words: coking, polymerization, hydrocarbons