Analysis of the overall pressure balance loop for a methanol-to-olefins dual fluidized bed reactor-regenerator

作     者：Bijan Hejazi Neda Shabany Bijan Hejazi;Neda Shabany

作者机构：Chemical Engineering DepartmentFaculty of EngineeringFerdowsi University of MashhadMashhad***Iran Petrochemical Research and Technology Co.TehranIran 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2023年第82卷第11期

页      面：13-24页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：This research did not receive any specific grant from funding agencies in the public  commercial  or not-for-profit sectors 

主　　题：Pressure balance loop Methanol-to-olefins Dual fluidized bed SAPO-34 catalyst 

摘      要：Development of a comprehensive reactor model is of paramount importance for design and scale-up of methanol-to-olefins (MTO) process in a dual fluidized bed reactor (DFB). These models must integrate suitable reaction kinetic expressions with hydrodynamic models properly descriptive of gas-solid contact in fluidized bed reactors. In this modeling study, our previously developed kinetic models of MTO fluidized bed reactor and regenerator are coupled with overall mass, energy and pressure balances to ensure smooth circulation of catalyst particles between the two fluidized beds. This integrated model was then applied to determine geometric dimensions of a demo-scale MTO DFB configuration and to obtain the mass distribution of catalyst particles throughout the entire system including the pipes connecting the two reactors. Our model is capable of being integrated into simulation software such as Aspen Plus for plant-wide optimization and scale-up studies.