Numerical analysis of reaction process and flow field in fixed bed of methanation reactor

CHENG Yuanhong; ZHANG Yaxin; WANG Jide; ZHAO Jing

doi:10.11949/j.issn.0438-1157.20150826

您当前的位置：

首页 >

文章列表页 >

Numerical analysis of reaction process and flow field in fixed bed of methanation reactor

更新时间：2025-12-10

- Numerical analysis of reaction process and flow field in fixed bed of methanation reactor
- CIESC Journal Issue 9, Pages: 3391-3397(2015)
- 作者机构：
  
  新疆大学化学化工学院, 煤炭清洁转化与化工过程自治区重点实验室,新疆,乌鲁木齐,830046
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20150826
  CLC： Q545TQ052.5
- Online First：05 September 2015，
  
  Published：05 September 2015
- 稿件说明：
移动端阅览
CHENG Yuanhong, ZHANG Yaxin, WANG Jide, et al. Numerical analysis of reaction process and flow field in fixed bed of methanation reactor[J]. CIESC Journal, 2015, (9): 3391-3397.
DOI：

CHENG Yuanhong, ZHANG Yaxin, WANG Jide, et al. Numerical analysis of reaction process and flow field in fixed bed of methanation reactor[J]. CIESC Journal, 2015, (9): 3391-3397. DOI： 10.11949/j.issn.0438-1157.20150826.

摘要

以甲烷化固定床反应器床层为研究对象

使用CFD软件编写CEL语言

将甲烷化反应以源项的形式添加到模拟过程中

对比多孔介质模型与填充球床模型模拟的准确性

选择填充球床模型进行模拟

获得了床层的速度场、组分浓度以及温度场分布。研究结果表明:与填充球床模型比较

由于多孔介质模型简化了内部的孔隙结构

使用其对固定床反应器进行模拟时存在较大误差

其中出口温度模拟值比实测值低13.6%;固定床的壁效应使近壁面处10%的圆环面积上通过20%的质量流量

进而显著影响床层内部场的分布;床层内部轴向温升显著

从250℃ 升高到 685℃

同时径向温度分布不均

变化范围在20～40℃内波动。

Abstract

Fixed bed of methanation reactor was simulated by inserting methanation reaction into simulation process in the form of the source term by using the CFD software to write CEL language. Then

by comparing the simulation accuracy of porous model and packed pebble-bed model

and choosing the packed pebble-bed model to simulate

the velocity field

the concentration of the components and the temperature field distribution in bed layer were obtained. The results showed that using the porous model to simulate fixed bed reactor caused greater error with the reason that porous model ignore the internal pore structure. The effect of wall in fixed bed significantly influenced on the field distribution. For example

20% of the mass flowed through the area near the wall that shared only 10% of the total area. The axial temperature rose from 250℃ to 685℃ significantly and the radial temperature distribution was not uniform with a fluctuating range of within 20℃ to 40℃.

关键词

Keywords

references

Views

497

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Simulation of novel bionic tree-shaped ground heat exchanger to mitigate thermal short-circuiting

Heat and mass transfer of filamentous particles in a fixed bed

CFD analysis of wall effects in packed beds with small tube-to-sphere diameter ratio

CFD simulation and parametric optimization of syngas production from non-catalytic autothermal reforming of natural gas

Transfer dynamics and reaction control mechanism over methanation catalyst particles in transport bed

Related Author

Lingling XU

Liang PU

ZHU Liping

YUAN Zhulin

YAN Yaming

LUO Dengshan

WANG Hongsheng

LI Bin

Related Institution

School of Energy and Power Engineering, Xi’an Jiaotong University

Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University

Key Laboratory of Energy Thermal Conversion and Control, Ministry of Education, School of Energy and Environment, Southeast University

Key Laboratory of Tobacco Processing Technology, CNTC

School of Energy and Power Engineering, University of Shanghai for Science and Technology

⁰