Simulation of Heat and Mass Transfer in Vertical Radial Flow Adsorbers

doi:10.7652/xjtuxb202202002

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Simulation of Heat and Mass Transfer in Vertical Radial Flow Adsorbers

更新时间：2025-05-08

- Simulation of Heat and Mass Transfer in Vertical Radial Flow Adsorbers
- Vol. 56, Issue 2, Pages: 17-25(2022)
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202202002
  CLC： TQ110
- Online First：10 February 2022，
  
  Published：2022
- 稿件说明：
移动端阅览
Simulation of Heat and Mass Transfer in Vertical Radial Flow Adsorbers[J]. 2022, 56(2): 17-25.
DOI：

Simulation of Heat and Mass Transfer in Vertical Radial Flow Adsorbers[J]. 2022, 56(2): 17-25. DOI： 10.7652/xjtuxb202202002.

摘要

为了揭示立式径向流吸附器吸附层内CO

和H

O竞相吸附的传热传质规律

基于已有的氧化铝和分子筛的CO

和H

O的吸附实验数据

采用计算流体动力学(CFD)技术对吸附层的CO

和H

O的二元吸附过程进行研究

建立了吸附层内CO

和H

O竞相吸附的传热传质数学模型

分析了流动均匀性和吸附性能的关系

同时对比了4种结构吸附器的吸附性能。结果表明:吸附过程中流动均匀性是反映吸附器内流场分布的参数

与吸附性能变化规律相近

且可侧面反映立式径向流吸附器的吸附剂利用率和吸附性能; 向心Z型的吸附器其CO

与H

O穿透区域不同

其他3种结构的CO

与H

O穿透区域相同; 向心π型的吸附器其CO

穿透区域和主要吸附区域为进气侧吸附层区域

其他3种结构为与进气侧相对的吸附层区域; 吸附器性能方面

离心π型的性能最好

压降相对于向心Z型降低了12.0%

吸附时间是向心Z型的2.34倍。该研究为立式径向流吸附器的选择和设计提供了理论参考。

Abstract

In order to reveal the laws of heat and mass transfer of competitive adsorption of CO

and H

O in the adsorption layers of vertical radial flow adsorber

based on the existing experimental data of CO

and H

O adsorption of alumina and molecular sieve

CFD(Computational Fluid Dynamics)technology is used to study the binary adsorption process of CO

and H

O in the adsorption layers. A mathematical model of h

eat and mass transfer of competitive adsorption of CO

and H

O in the adsorption layer is established

the relationship between flow uniformity and adsorption performance is analyzed

and the adsorption performance of four types of adsorbers is compared. The results show that the flow uniformity in the adsorption process is a parameter reflecting the flow field distribution in the adsorbers

which has a similar change law with the adsorption performance and can be used to reflect the adsorbent utilization rate and adsorption performance of vertical radial flow adsorbers. The CO

and H

O penetration regions of centripetal Z-type are different

while those of the other three structures are the same. The CO

penetration region and main adsorption region of centripetal π-type are the adsorption layer near the inlet side

and those of the other three structures are the adsorption layer opposite to the inlet side. In terms of the adsorber performance

the centrifugal π-type has the best performance

the pressure drop is 12.0% lower than that of centripetal Z-type

and the adsorption time is 2.34 times that of centripetal Z-type. The research results provide a theoretical reference for the selection and design of vertical radial flow adsorber.

关键词

Keywords

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