高校化学工程学报2012，Vol.26Issue(1)：69-76,8.
甲醇制烯烃流化床反应器的模拟与分析
Simulation of Fluidized Bed Reactor for Methanol to Olefins(MTO)Process
摘要
Abstract
The two-phase model was employed to simulate the fluidized bed reactor for the continuous methanol to olefins (MTO) process over SAPO-34 catalyst. Followed by Lagrangian method, the MTO reactions and the coke accumulation on the SAPO-34 catalyst particles were investigated in detail, including the effects of the mass transfer rate, the catalyst residence time and the back-mixing of the catalyst particles on the MTO process. The results show that, the rate of the inter-phase mass transfer is much slower than the rate of the MTO chemical reaction, and the mass transfer is the controlling step in the fluidized bed MTO process. Increasing mass transfer rate or catalyst residence time, the coke accumulation on the catalyst will be promoted, which will also result in increasing the selectivity of ethylene and propylene. However, reducing the catalyst back-mixing or employing the multi-stage bed, the olefins products' distribution is affected only a little. And the option of counter-current multi-stage bed even leads to a remarkable decrease of the selectivity of ethylene and propylene.关键词
MTO/流化床/停留时间/模拟Key words
MTO/ fluidized bed/ residence time/ simulation分类
化学化工引用本文复制引用
郑康,成有为,李希..甲醇制烯烃流化床反应器的模拟与分析[J].高校化学工程学报,2012,26(1):69-76,8.基金项目
国家自然科学基金资助项目(20806072). （20806072）
