Optimization study and industrial application of ethane-propane co-cracking technology

Objective The co-cracking technology of ethane and propane is optimized.

Methods The BSPA ethylene cracking evaluation test equipment of KBR company is used to optimize the separate cracking of ethane and propane and the blending cracking technology according to different ratios in the laboratory.

Results When the blend proportion of ethane is 20%-90%, the yields of ethylene, diene and triene are increased. When the blend proportion of ethane is 80%-90%, the highest yields of ethylene, diene and triene are 55.28%, 56.05% and 58.01%, respectively.

Conclusion The optimized result is applied in industrial ethylene cracking plant, the total ethylene yield and the diene yield don't decrease when the proportion of light cracking feedstock in the whole cracking feedstock reduced more than 10%, and the remarkable industrial application effect has been obtained.