Methanol to propylene process using moving bed technology and its engineering study

YAN Lixia; JIANG Yuntao; JIANG Binbo; LIAO Zuwei; HUANG Zhengliang; WANG Jingdai; YANG Yongrong; WANG Xieqing

doi:10.3969/j.issn.0438-1157.2014.01.001

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Methanol to propylene process using moving bed technology and its engineering study

更新时间：2025-12-10

- Methanol to propylene process using moving bed technology and its engineering study
- CIESC Journal Issue 1, Pages: 2-11(2014)
- 作者机构：
  
  化学工程联合国家重点实验室, 浙江大学化学工程与生物工程学系,浙江,杭州,310027
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2014.01.001
  CLC： Q028.8
- Online First：05 January 2014，
  
  Published：05 January 2014
- 稿件说明：
移动端阅览
YAN Lixia, JIANG Yuntao, JIANG Binbo, et al. Methanol to propylene process using moving bed technology and its engineering study[J]. CIESC Journal, 2014, (1): 2-11.
DOI：

YAN Lixia, JIANG Yuntao, JIANG Binbo, et al. Methanol to propylene process using moving bed technology and its engineering study[J]. CIESC Journal, 2014, (1): 2-11. DOI： 10.3969/j.issn.0438-1157.2014.01.001.

摘要

提出了一种新型的移动床甲醇制丙烯工艺（MMTP）并进行工程化分析。首先，根据反应器必须与催化剂的反应失活速率相匹配的原则，认为移动床是与失活速率处于中等水平的ZSM-5催化剂相匹配的最佳反应器。因此，MMTP工艺在充分发挥ZSM-5催化剂多产丙烯优势的基础上，结合移动床的中等循环速率进行反应-再生，从而实现催化剂高产丙烯的连续化与稳定化；其次，针对MTP反应的强放热特点，对比了流化床工艺的一步法操作与固定床工艺的两步法操作，发现MMTP工艺采用两步法操作既能合理地分配反应热，又能灵活地调控产品分布；最后，通过换热网络的优化设计与醇油共炼的工艺集成，使得MMTP工艺在节水节能的同时仍具有高丙烯收率。目前，在现有的MMTP工艺技术基础上，已经完成1万吨丙烯/年的工艺包设计，技术和经济的竞争优势十分明显，市场推广应用前景广阔。

Abstract

A novel moving bed process for methanol to propylene (MMTP)

and conducts engineering analysis for this process were presented. Firstly

according to the principle that the reactor must be matched with reaction catalyst deactivation

the most matching reactor for ZSM-5 catalysts (with mid-level deactivation) is moving bed. Moreover

the MMTP process can not only exert higher propylene selectivity of the catalyst

but also can utilize medium particle circulation rate for reaction and regeneration to serialize and stabilize high yield of propylene process. Secondly

regarding the strong exothermal characteristics of the MMTP reaction

two kinds of processes

fluidized bed one-step operation and fixed bed two-step operation

are compared. Based on the comparison results

it is concluded that the two-step operation of MMTP process can allocate reasonable reaction heat and control product distribution with flexibility. Finally

through integration of heat-exchange network optimization and alcohol-oil refining process

MMTP process owns high propylene yield on the basis of water and energy saving. On the basis of current MMTP process

10000 t·a-1 propylene technology package design has been completed. In summary

MMTP owns visible competitive advantages both on technique and economics

which has high application potential in industry.

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