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一．前言 石油化工催化裂化技术在我国已有３０多年历史，特别是８０年代重油催化裂化技术的迅速发展，标志着我国炼油技术登上了一个新的台阶。催化裂化的原料，已由过去的常压、减压馏份油（蜡油）扩大到常压渣油、掺炼焦化蜡油和掺炼减压渣油，发展到今天的１００％全渣油．
one. Foreword Petrochemical catalytic cracking technology has a history of more than 30 years in China, especially the rapid development of heavy oil catalytic cracking technology in the 1980s, which indicates that China’s refining technology has reached a new level. The raw material for catalytic cracking has been expanded from atmospheric pressure and vacuum distillate oil (wax oil) in the past to atmospheric residue, coker blended wax oil and blended vacuum residue, and it has been developed to today’s 100% full residue oil. .