Adsorption characteristics of CO2/H2O with low humidity

被引：0

作者：

Ren K. ^{[1
]}

Lu J. ^{[1
]}

Wang S. ^{[1
]}

Tang J. ^{[1
]}

机构：

[1] School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing

来源：

Huagong Jinzhan/Chemical Industry and Engineering Progress | 2022年 / 41卷 / 12期

关键词：

activated alumina; activated carbon; adsorption; carbon capture; CO[!sub]2[!/sub]/H[!sub]2[!/sub]O; selectivity; zeolite 3A and 13X;

D O I：

10.16085/j.issn.1000-6613.2022-0246

中图分类号：

学科分类号：

摘要：

Carbon capture, utilization and storage is an essential way to achieve the goal of carbon peak and neutrality, the gases exhaust from power industry and coal supercritical water gasification systems after condenser of carbon capture are mainly CO2/H2O with 1%—5% H2O, which needs to separate using by adsorption. To purify and reutilize the low-moisture CO2/H2O, the adsorption breakthrough curve, temperature profiles, adsorption capacity of binary CO2/H2O at different temperature (303K, 313K) and H2O mole fraction (0.7%—3.0%) were studied experimentally for four adsorbents of activated carbon, activated alumina, zeolites 3A and 13X. The separation factor and isosteric heat of binary CO2/H2O were also analyzed. Results show that as adsorption time increases, the bed temperature and the concentration of each component present the same trend. As the inlet temperature increases, the saturation time of H2O decreases. As the mole fraction of H2O increases, the adsorption of CO2 was inhibited due to competitive adsorption, and the saturated time of H2O in activated carbon and activated alumina increases, but that of H2O in zeolite 3A and 13X decreased. The adsorption amounts of H2O increased with the increase of H2O concentration, while the isosteric heat decreased with the adsorption amounts, which presented the opposite for CO2. Zeolite 3A had the smallest CO2 adsorption amounts and the largest CO2/H2O separation factor. When H2O mole fraction was less than 1%, the separation factor of zeolite 13X, which had the largest CO2 adsorption amounts, was greater than that of activated alumina. Therefore, the zeolite 3A and 13X were suitable for the separation of CO2/H2O with low moisture. © 2022 Chemical Industry Press. All rights reserved.

引用

页码：6698 / 6710

页数：12

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[1]

FU Wenfeng, WANG Lanjing, YANG Yongping, Optimal design for double reheat coal-fired power plants with post-combustion CO2 capture: a novel thermal system integration with a carbon capture turbine, Energy, 221, (2021)

[2]

GUAN Yuru, SHAN Yuli, HUANG Qi, Et al., Assessment to China’s recent emission pattern shifts[J], Earth’s Future, 9, 11, (2021)

[3]

GOUEDARD C, PICQ D, LAUNAY F, Et al., Amine degradation in CO2 capture. I. A review, International Journal of Greenhouse Gas Control, 10, pp. 244-270, (2012)

[4]

WANG M, LAWAL A, STEPHENSON P, Et al., Post-combustion CO2 capture with chemical absorption: a state-of-the-art review, Chemical Engineering Research and Design, 89, 9, pp. 1609-1624, (2011)

[5]

GUO Liejin, JIN Hui, Boiling coal in water: hydrogen production and power generation system with zero net CO2 emission based on coal and supercritical water gasification, International Journal of Hydrogen Energy, 38, 29, pp. 12953-12967, (2013)

[6]

CHEN Zhewen, ZHANG Xiaosong, HAN Wei, Et al., A power generation system with integrated supercritical water gasification of coal and CO2 capture, Energy, 142, pp. 723-730, (2018)

[7]

PFAFF I, OEXMANN J, KATHER A., Optimised integration of post-combustion CO2 capture process in greenfield power plants, Energy, 35, 10, pp. 4030-4041, (2010)

[8]

WEBLEY Paul A., Adsorption technology for CO2 separation and capture: a perspective, Adsorption, 20, 2, pp. 225-231, (2014)

[9]

BEN-MANSOUR R, HABIB M A, BAMIDELE O E, Et al., Carbon capture by physical adsorption: materials, experimental investigations and numerical modeling and simulations—A review, Applied Energy, 161, pp. 225-255, (2016)

[10]

LU Junhui, CAO Haishan, LI Junming, Energy and cost estimates for separating and capturing CO2 from CO2/H2O using condensation coupled with pressure/vacuum swing adsorption, Energy, 202, (2020)

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