Abstract:

The steam cracker feedslate and its developing trend are introduced. It is considered that the cracking feedstock has become lighter and lighter. The impact of changes in feedslate on the process and equipment of different systems in ethylene plant is analyzed based on the cracking conditions and cracking gas composition of several typical cracking feedstock. The feedstock properties, the proportion of each feedstock, the process technology and the design margin are different among ethylene plants, and the load change proportion is different among systems and equipment when the cracking feedstock changes. Therefore, calculation shall be done for the systems and equipment in ethylene plant to judge the adaptability of each system to the changes in feedstock. 

Key words: ethylene, steam cracking, cracking feedstock