【一天一词“走出去”】Day16

催化裂化 Catalytic Cracking

石油二次加工的主要工艺，将重质油转化为汽油，柴油等轻质产品的主要手段。催化裂化是重质油在热和催化剂作用下进行的裂化反应，与热裂化相比，其轻质油产率高，汽油辛烷值高，安定性好，并副产低碳烯烃。

The main process of oil secondary processing, making the heavy oil into gasoline, diesel and other light products the main means. Catalytic cracking is a cracking reaction of heavy oil under the effect of heat and catalyst. Compared with thermal cracking, it has high light oil yield, high gasoline octane number, good stability and by-product light olefins.