Methanol to Propylene Process in a Moving Bed Reactor with Byproducts Recycling: Kinetic Study and Reactor Simulation

详细信息    查看全文

• 作者：Binbo Jiang ; Xiang Feng ; Lixia Yan ; Yuntao Jiang ; Zuwei Liao ; Jingdai Wang ; Yongrong Yang
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2014
• 出版时间：March 26, 2014
• 年：2014
• 卷：53
• 期：12
• 页码：4623-4632
• 全文大小：477K
• 年卷期：v.53,no.12(March 26, 2014)
• ISSN：1520-5045

文摘

A moving bed reactor concept was introduced to the methanol to propylene process. To implement this concept, a modified kinetic model of MTP reaction on a special HZSM-5 pellet catalyst was developed; a moving bed reactor model in propylene yield platform period was proposed. Applying these two models, a two-stage moving bed in series with methanol quenched between stages was investigated. Water and part of the byproducts were recycled to the first moving bed reactor. Simulation results showed that the recycle of byproducts could increase the yield of propylene to 70%. The roles of higher hydrocarbons in the two reactors were different since they acted as reactants in the first moving bed while as products in the second one.