LIU Yongdong¹, WU Yonghong¹, SU Hui², TIAN Jingxiao², JIN Zhengwei², YIN Jiajie¹, LUO Faliang¹

(1. State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering；College of Chemisty and Chemical Engineering,Ningxia University， Yinchuan 750021， China； 2. Institute of Coal Chemical Industry Technology,CHN Energy Ningxia Coal Industry Group Co., Ltd.， Yinchuan 750411， China)

Abstract: In order to save energy, reduce the over-grinding phenomenon in the ultra-fine process of the methanol to propylene deactivated molecular sieve catalyst (MTP-DC), and finally provide the recycling of MTP-DC, the kinetic analysis of the MTP-DC ultra refining process was carried out. The results show that the particle size distribution of MTP-DC is uniform in the ultra-fine process and the ultra-fine process of two intervals with the particle size larger than 2.863 μm and smaller than 2.552 μm follow different grinding kinetic equations. In the two intervals, kinetic parameter m value gradually decreases with the decreasing of MTP-DC granularity, and k value increases with the decreasing of MTP-DC granularity, respectively.

Keywords: ultrafinement; methanol to propylene deactivated molecular sieve catalyst;kinetic analysis; particle size distribution

中图分类号： TQ029+.1

文献标志码：A

文章编号：1008-5548(2021)05-0077-08

DOI:10.13732/j.issn.1008-5548.2021.05.010

收稿日期： 2021-03-09，修回日期：2020-03-26，在线出版时间：2021-08-17 08:41。

基金项目：宁夏回族自治区重点研发项目，编号：2019BDE03004；宁夏高等学校一流学科建设项目及国家双一流学科建设项目，编号：NXYLXK2017A04。

第一作者简介：刘永东(1990—)，男，助理工程师，硕士研究生，研究方向为高分子材料改性。E-mail：1123927495@qq.com。

通信作者简介：罗发亮(1976—)，男(回族)，教授，博士，从事高分子材料改性研究。E-mail：flluo@iccas.ac.cn。