New process development and process evaluation for capturing CO<sub>2</sub> in flue gas from power plants using ionic liquid [emim][Tf<sub>2</sub>N]

Lan Li; Xiaoting Huang; Quanda Jiang; Luyue Xia; Jiawei Wang; Ning Ai

doi:10.1016/j.cjche.2019.08.005

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New process development and process evaluation for capturing CO₂ in flue gas from power plants using ionic liquid [emim][Tf₂N]

Separation Science and Engineering | Updated：2026-01-06

- New process development and process evaluation for capturing CO₂ in flue gas from power plants using ionic liquid [emim][Tf₂N]
- Chinese Journal of Chemical Engineering Vol. 28, Issue 3, Pages: 721-732(2020)
- Affiliations：
  
  1. College of Chemical Engineering, Zhejiang University of Technology,Hangzhou,China,310014
  2. Zhejiang Province Key Laboratory of Biomass Fuel,Hangzhou,China,310014
  3. Biodiesel Laboratory of China Petroleum and Chemical Industry Federation,Hangzhou,China,310014
  4. Zhejiang Supcon Software Co., Ltd,Hangzhou,China,310014
  5. School of Engineering & Applied Science, Aston University,,W Midlands,England,Birmingham,UK,B4 7ET
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2019.08.005
  CLC：
- Published：2020
- Accepted：
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in flue gas from power plants using ionic liquid [emim][Tf
DOI：

in flue gas from power plants using ionic liquid [emim][Tf DOI： 10.1016/j.cjche.2019.08.005.

摘要

Abstract

Using the ionic liquid [emim

]

[Tf

]

as a physical solvent

it was found by Aspen Plus simulation that it was possible to attempt to capture CO

from the flue gas discharged from the coal-fired unit of the power plant. Using the combination of model calculation and experimental determination

the density

isostatic heat capacity

viscosity

vapor pressure

thermal conductivity

surface tension and solubility of [emim

]

[Tf

]

were obtained. Based on the NRTL model

the Henry coefficient and NRTL binary interaction parameters of CO

dissolved in [emim

]

[Tf

]

were obtained by correlating [emim

]

[Tf

]

with the gas-liquid equilibrium data of CO

. Firstly

the calculated relevant data is imported into Aspen Plus

and the whole process model of the ionic liquid absorption process is established. Then the absorption process is optimized according to the temperature distribution in the absorption tower to obtain a new absorption process. Finally

the density

constant pressure heat capacity

surface tension

thermal conductivity

and viscosity of [emim

]

[Tf

]

were c

hanged to investigate the effect of ionic liquid properties on process energy consumption

solvent circulation and heat exchanger design. The results showed that based on the composition of the inlet gas stream to the absorbers

with a capture rate of 90% and a mass purity higher than 99.5% was captured. These results indicate that the [emim

]

[Tf

]

could be used as a physical solvent for CO

capture from coal-fired units. In addition

the results will provide a theoretical basis for the design of new ionic liquids for CO

capture.

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Related Author

Bo-Yun Liu

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Liang Yang

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Yihui Dong

Related Institution

School of Power Engineering, Naval University of Engineering

School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology

College of Mathematics Science, Bohai University

Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences

2 Tianjin Key Laboratory of Membrane Science and Desalination Technology, State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University

⁰

New process development and process evaluation for capturing CO2 in flue gas from power plants using ionic liquid [emim][Tf2N]

DOI：10.1016/j.cjche.2019.08.005

摘要

Abstract

关键词

Keywords

references

New process development and process evaluation for capturing CO₂ in flue gas from power plants using ionic liquid [emim][Tf₂N]