Simulation of solubility for separating carbon dioxide from gas mixture using ZIF-8/glycol slurry

ZONG Jie; MA Qinglan; CHEN Guangjin; SUN Changyu

doi:10.11949/j.issn.0438-1157.20180236

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Simulation of solubility for separating carbon dioxide from gas mixture using ZIF-8/glycol slurry

更新时间：2025-12-10

- Simulation of solubility for separating carbon dioxide from gas mixture using ZIF-8/glycol slurry
- CIESC Journal Issue 10, Pages: 4276-4283(2018)
- 作者机构：
  
  中国石油大学(北京)高压流体相态及物性研究实验室,北京,102249
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20180236
  CLC： Q021.2
- Online First：05 October 2018，
  
  Published：05 October 2018
- 稿件说明：
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ZONG Jie, MA Qinglan, CHEN Guangjin, et al. Simulation of solubility for separating carbon dioxide from gas mixture using ZIF-8/glycol slurry[J]. CIESC Journal, 2018, (10): 4276-4283.
DOI：

ZONG Jie, MA Qinglan, CHEN Guangjin, et al. Simulation of solubility for separating carbon dioxide from gas mixture using ZIF-8/glycol slurry[J]. CIESC Journal, 2018, (10): 4276-4283. DOI： 10.11949/j.issn.0438-1157.20180236.

摘要

吸收-吸附耦合分离法在分离捕集CO2方面表现出潜在的优势，应用Kurihara等提出的基于局部组成概念的混合规则与Patel-Teja状态方程相结合确定乙二醇与气体组分间的吸收平衡，由溶解度实验数据确定了混合规则中的二元交互作用参数；采用Langmuir等温吸附方程确定ZIF-8与气体组分间的吸附平衡，进而确定了ZIF-8表面乙二醇膜的选择渗透压与气体组分平衡逸度间的关联式。最后将热力学模型应用到了预测ZIF-8/乙二醇浆液分离捕集CO2体系。

Abstract

The absorption-adsorption hybrid method has potential superiority on CO2 separation and caption. In this work

the Patel-Teja equation of state coupled with the Kurihara mixing rule was used to describe the absorption equilibrium. The binary interaction coefficients between pure gas components and glycol were determined by correlating the experimental gas solubility data. Then

the Langmuir equation was applied to calculate the adsorption of gas in ZIF-8

and get the correlation of osmotic pressure of glycol liquid membrane on the surface of ZIF-8 with the equilibrium fugacity of gas component. Finally

the obtained model was applied to predict the separation of CO2 from gas mixture using ZIF-8/glycol slurry.

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