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从80年代初以来，渣油转化工艺进展迅速。近来，渣油催化裂化、自动化的渣油脱金属、溶剂脱沥青、沥青和焦炭气化又进一步增加了渣油加工和经济利用的方案。延迟焦化是热加工高转化率工艺的主力，全世界装置能力为5565万m3／d，工艺上改进包括缩短焦化周期、减少焦炭产率和增加
Since the early 1980s, the residue conversion process is progressing rapidly. Recently, residual oil catalytic cracking, automated residue demetallation, solvent deasphalting, asphalt and coke gasification have further added options for processing and economic use of residual oil. Delayed coking is the main process for the high conversion rate of thermal processing, the world installation capacity of 55.65 million m3 / d, process improvements include shortening the coking cycle, reducing coke yield and increase