沈文豪¹,张亚新¹,赵玲²

• 1:新疆大学 化学化工学院，新疆 乌鲁木齐 830046
• 2:华东理工大学 化学工程联合国家重点实验室，上海 200237

摘要(Abstract)：

针对固定床甲烷化反应器内催化剂积炭问题，采用离散元方法（DEM）建立小管径比随机堆积球形催化剂床层，计算流体力学（CFD）方法模拟催化剂外层到内层的积炭形成过程，探讨入口氢气占比、温度、流速和催化剂温度对积炭的影响。结果表明：反应初期积碳最严重，0~4 000 s平均孔隙率值下降了0.34，4 000~8 000 s平均孔隙率值下降了0.075；从催化剂外层到内层，积炭程度呈圆环状减小；入口氢气占比从0~40%、催化剂温度从850~770 K，催化剂平均孔隙率值增大0.27、0.22；入口流速从0.015~0.005 m·s^-1、温度从500~400 K，催化剂中心孔隙率值减小0.01、0.005。结论可为固定床反应器和甲烷化积炭效应研究提供参考。

关键词(KeyWords)： 固定床反应器;积炭;多尺度;计算流体力学;离散元

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金（21766034）。

作者(Author): 沈文豪¹,张亚新¹,赵玲²

DOI: 10.3969/j.issn.1003-9015.2019.00.008

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