A large amount of C5 fraction is generated in the ethylene production process with petroleum hydrocarboncracking.
在石油烃类裂解制取乙烯的过程中，有大量的C5馏分产生。
2
Applying the method of mathematical statistics, the model for predicting olefin yield distribution of hydrocarboncracking is obtained.
采用经验法，以芳烃指数、裂解温度、停留时间为参数，建立烃类裂解烯烃产率分布模型。
3
The hydrocarboncracking catalysts prepared by the silica rich REHY as an active component possessed high cracking activity, low coke formation and high metal tolerance...