气固流化床内费托铁基催化剂的流化特性

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冯留海^1,2，冯钰琦³，赵杰³，门卓武¹，李希²，卜亿峰^1*

1. 北京低碳清洁能源研究所，北京 102209 2. 浙江大学化学工程与生物工程学系，浙江杭州 310027 3. 北京石油化工学院过程装备与控制工程，北京 102627

收稿日期:2019-02-25修回日期:2019-08-02出版日期:2020-03-22发布日期:2020-03-20
通讯作者:卜亿峰

基金资助:国家重点研发计划项目

Flow behaviors of FT catalyst in gas-solid fluidized bed

Liuhai FENG^1,2, Yuqi FENG³, Jie ZHAO³, Zhuowu MEN¹, Xi LI², Yifeng BU^1*

1. National Institute of Clean-and-low-carbon Energy, Beijing 102209, China 2. Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China 3. School of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102627, China

Received:2019-02-25Revised:2019-08-02Online:2020-03-22Published:2020-03-20

摘要/Abstract

摘要： 为研究费托(Fischer?Tropsch, FT)催化剂在气固流化床内的流动过程，分析了催化剂的主要物性参数，在不同直径流化床内测量了各表观气速下FT催化剂的流动特性，并与广泛应用的流化催化裂化(Fluid Catalytic Cracking, FCC)催化剂的流态化行为进行了对比。结果表明，同为A类颗粒，相较于FCC催化剂，由于FT催化剂的休止角较小(约为FCC催化剂的75%)，其临界流化速度较小、床层膨胀高度和气节高度较小；两种催化剂在流化床内流化过程基本相似，随表观气速增大依次出现膨胀、鼓泡、湍动等流型，但各流型转变时的临界速度差异较大。催化剂物性参数对流化特性影响较大，FT催化剂在各阶段流化过程均相对稳定，有利于催化剂在流化床内均匀分布，其气固接触效果优于FCC催化剂；不同催化剂床层高径比下气节高度变化的转折点与流型存在对应关系，可将气节高度随表观气速的变化关系作为判断湍动流化区内流型临界速度的依据。

引用本文

冯留海冯钰琦赵杰门卓武李希卜亿峰. 气固流化床内费托铁基催化剂的流化特性[J]. 过程工程学报, 2020, 20(3): 302-307.
Liuhai FENG Yuqi FENG Jie ZHAO Zhuowu MEN Xi LI Yifeng BU. Flow behaviors of FT catalyst in gas-solid fluidized bed[J]. Chin. J. Process Eng., 2020, 20(3): 302-307.

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