H2 solubility and mass transfer in anthraquinone working solution: Experimental and modeling study

doi:10.1016/j.cjche.2016.10.001

›› 2017, Vol. 25 ›› Issue (2): 143-148.DOI: 10.1016/j.cjche.2016.10.001

• Selected Papers from the International Chemical Separation Technology Conference (ICSTC) • 上一篇下一篇

H₂ solubility and mass transfer in anthraquinone working solution: Experimental and modeling study

Zhigang Lei, Yaru Guo, Yanyan Guo, Xinxin Li, Chengna Dai

State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China

收稿日期:2016-08-15 修回日期:2016-10-05 出版日期:2017-02-28 发布日期:2017-03-14
通讯作者: Chengna Dai
基金资助:
Supported by the National Natural Science Foundation of China (Nos. 21476009, 21406007, and U1462104).

H₂ solubility and mass transfer in anthraquinone working solution: Experimental and modeling study

Zhigang Lei, Yaru Guo, Yanyan Guo, Xinxin Li, Chengna Dai

State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China

Received:2016-08-15 Revised:2016-10-05 Online:2017-02-28 Published:2017-03-14
Supported by:
Supported by the National Natural Science Foundation of China (Nos. 21476009, 21406007, and U1462104).

摘要/Abstract

摘要： Thisworkwas focused on the measurement of the solubility of hydrogen (H₂) in anthraquinoneworking solution at temperatures of 30.0-80.0℃ and pressures of 0.2-3.0 MPa by the method of experimental and COSMO-RS model study. The influence of various factors, i.e., including pressure, temperature and solvent volume ratio, on H₂ solubility was investigated. According to the experimental results, H₂ solubility in anthraquinone working solution increases with the increase of pressure. At low pressures, the temperature had little effect on H₂ solubility while under high pressures H₂ solubility increases with increasing temperature. Henry's constant ln_H has a good linear relationship with 1/_T (ln_H=-1319.1/_T+9.91). The effect of volume ratio of trioctyl phosphate to trimethylbenzene on the solubility of hydrogen was studied and the results showed that increasing the amount of trimethylbenzene was conducive to the dissolution of hydrogen. In addition, there is a linear relationship between ln((P₀-P_e)/(P_t-P_e)) and the time t. Gas-liquid mass transfer coefficient was obtained by calculating the slope of the line.

关键词: Hydrogen, Solubility, Anthraquinone working solution, Trimethylbenzene, COSMO-RS model, Mass transfer

Abstract: Thisworkwas focused on the measurement of the solubility of hydrogen (H₂) in anthraquinoneworking solution at temperatures of 30.0-80.0℃ and pressures of 0.2-3.0 MPa by the method of experimental and COSMO-RS model study. The influence of various factors, i.e., including pressure, temperature and solvent volume ratio, on H₂ solubility was investigated. According to the experimental results, H₂ solubility in anthraquinone working solution increases with the increase of pressure. At low pressures, the temperature had little effect on H₂ solubility while under high pressures H₂ solubility increases with increasing temperature. Henry's constant ln_H has a good linear relationship with 1/_T (ln_H=-1319.1/_T+9.91). The effect of volume ratio of trioctyl phosphate to trimethylbenzene on the solubility of hydrogen was studied and the results showed that increasing the amount of trimethylbenzene was conducive to the dissolution of hydrogen. In addition, there is a linear relationship between ln((P₀-P_e)/(P_t-P_e)) and the time t. Gas-liquid mass transfer coefficient was obtained by calculating the slope of the line.

Key words: Hydrogen, Solubility, Anthraquinone working solution, Trimethylbenzene, COSMO-RS model, Mass transfer

Zhigang Lei, Yaru Guo, Yanyan Guo, Xinxin Li, Chengna Dai. H₂ solubility and mass transfer in anthraquinone working solution: Experimental and modeling study[J]. , 2017, 25(2): 143-148.

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H₂ solubility and mass transfer in anthraquinone working solution: Experimental and modeling study

H₂ solubility and mass transfer in anthraquinone working solution: Experimental and modeling study

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