Abstract:

The impurities in industrial butene such as H₂O, CO and O₂ have great influence on the activity of catalysts in polyolefin plants. Therefore, the butene raw material must be refined to remove the excessive H₂O, CO, O₂ and other impurities before participating in polymerization reaction. In this paper, the butane refining unit of a polyolefin plant is simulated by Aspen Plus, the refining process is discussed based on the stripper model established and the simulation results, and the characteristics and advantages of two butene refining schemes are introduced and discussed. Appropriate refining scheme may be selected according to the actual situations of a specific project.

Key words: butene refining')">

butene refining, process simulation, scheme optimization