Modeling and analysis of the Lurgi‐type methanol to propylene process: Optimization of olefin recycle
Modeling and analysis of the Lurgi‐type methanol to propylene process: Optimization of olefin recycle
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DOI：
10.1002/aic.15565
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发表时间：
2017
期刊：
影响因子：
3.7
通讯作者：
Xun Huang;Hu Li;Hui Li;Wende Xiao
中科院分区：
文献类型：
--
作者：
Xun Huang;Hu Li;Hui Li;Wende Xiao
本文提出了通过减少主反应器中回收的烯烃并加装烯烃裂化反应器来提高工业甲醇制丙烯工艺轻烯烃收率的策略。采用非均相固定床模型对反应器进行了模拟，并建立了稳健的数学程序来确定反应器的构型和烯烃的循环流量。提出了两种调节方法：循环率和烯烃种类。结果表明，当比例由100%降至23%以下或除戊烯和己烯外只回收丁烯进入主反应器时，C2-C3烯烃的收率可由60%左右提高到70%，其中后一种方法的催化剂需要量比附加裂化反应器少7倍。©2016美国化学工程师学会学报，63:306-313,2017
This work proposed a strategy to improve the yield of light olefins of industrial methanol to propylene process by reducing the olefins recycled back into the main reactor and appending an olefin cracking reactor. The heterogeneous fixed-bed model was employed to simulate the reactors with a robust mathematical procedure developed to determine the reactor configuration and the recycle flow rates of the olefins. Two methods were proposed for the modulation: the recycle ratio and species of the olefins, respectively. Results show that the yield of C2–C3 olefins can be improved up to 70% from the basement of about 60% when the ratio is reduced from 100% to less than 23% or when only butene apart from pentene and hexene is recycled back into the main reactor, and the latter method is more effective as its catalyst requirement is seven times less than the former's in the appended cracking reactor. © 2016 American Institute of Chemical Engineers AIChE J, 63: 306–313, 2017