1催化裂化技术的重要性及存在的问题1.1催化裂化技术的重要性催化裂化是指在石油炼制过程中,在热和催化剂的作用下使重油发生裂化反应,转化为裂化气、汽油和柴油等的过程.从20世纪90年代开始,随着世界原油的重质化和劣质化日趋严重,而且市场对重质燃料的需求越来越少,使重油催 The importance of a catalytic cracking technology and existing problems 1.1 The importance of catalytic cracking technology Catalytic cracking refers to the cracking process of heavy oil in the process of petroleum refining, under the action of heat and catalyst, into cracking gas, gasoline and diesel Etc. Since the 1990s, as the world’s heavy crude oil has become increasingly heavy and poor quality, and the market demand for heavy fuels less and less, so that heavy oil reminder