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| Study on Effect of Gas-phase 2EH(2-ethyl-1-hexanol) on Mass Transfer Characteristics of Lithium Bromide Solution |
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Received:September 02, 2020
Revised:September 07, 2020
Accepted:September 11, 2020
Published Online:December 03, 2020
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| DOI：doi：10.3969/j.issn.1007-7545.2020.12.014 |
| KeyWord:gas-phase 2EH(2-ethyl-1-hexanol); lithium bromide solution; surface tension; mass transfer |
| Author | Institution |
| WANG Gang |
北京建筑大学 环境与能源工程学院 |
| DONG Pei-wen |
北京建筑大学 环境与能源工程学院 |
| LIU Fang |
北京建筑大学 环境与能源工程学院 |
| ZENG Min |
西安交通大学 热流科学与工程教育部重点实验室 |
| ZHANG Qun-li |
北京建筑大学 环境与能源工程学院 |
| DUAN Zhi-yin |
北京建筑大学 环境与能源工程学院 |
| XIE Guo-zhen |
北京建筑大学 环境与能源工程学院 |
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| Abstract: |
| Effect of gas-phase 2EH(2-ethyl-1-hexanol) additive amount on surface tension of LiBr (lithium bromide solution) and influences of gas-phase 2EH additive amount and solution flow rate on mass transfer coefficient during falling film absorption process were studied by setting up a test device for mass transfer performance of LiBr. The experimental results show that addition of gas-phase 2EH has a significant effect on surface tension and mass transfer coefficient of LiBr. Surface tension drops with increase of additive amount of gas-phase 2EH, but mass transfer coefficient rises with increase of additive amount of gas-phase 2EH. Adsorption of gas-phase 2EH molecules on solution surface reduces solution surface tension gradient and causes the Marangoni effect, which is an important cause for increase of convective mass transfer enhancement ratio. |
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