Abstract
ABSTRACT The chemistry of catalytic cracking of heavy oils is basic and essential to the research, use and development of advanced catalytic cracking techniques for heavy oils. The effect of physic-chemical characteristics of heavy oils on the catalytic cracking process were discussed. The researches on chemical composition and structure of heavy oils were summarized in terms of separation methods and the determination of chemical composition and structural parameters. Studies and developments of the chemistry of catalytic cracking of heavy oils were reviewed in this paper. At last, some problems to be resolved about the feed, catalyst, processing and regeneration were put forward based on information in hand.
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