Decarbonization performance of downflow tubular gas-liquid contactor of microbubble-type

被引：0
|
作者：
Yang H. [1 ,2 ]
Kong L. [1 ,2 ]
Chen J. [1 ,2 ]
Sun H. [1 ,2 ]
Song J. [1 ,2 ]
Wang S. [1 ,2 ]
Kong B. [1 ,2 ]
机构：
[1] Department of Environmental Engineering, Beijing Institute of Petrochemical Technology, Beijing
[2] Beijing Key Laboratory of Pipeline Critical Technology and Equipment for Deepwater Oil & Gas Development, Beijing
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2023年 / 42卷
关键词：
carbon dioxide; downflow tubular gas-liquid contactor; enhanced mass transfer; gas-liquid absorption; gas-liquid mixing; microbubble;
D O I：
10.16085/j.issn.1000-6613.2023-1344
中图分类号：
学科分类号：
摘要：
The micro bubble downflow tubular gas-liquid contactor is a kind of downward co-current gas-liquid contact mass transfer equipment. It enhances mass transfer by absorbing high-density micro bubbles generated by the high-speed liquid jet of the jet bubble generator, which has the advantages of compact structure, large gas-liquid contact area, and high mass transfer efficiency. Based on the performance experimental testing platform of a micro bubble downflow tubular gas-liquid contactor and the CO2-N2 mixed gas system, the effects of pump liquid volume on pressure drop and maximum natural suction capacity were first investigated. On this basis, the effects of different operational and structural parameters on its decarbonization performance were explored. The results showed that the micro bubble downflow tubular gas-liquid contactor adopted high-speed liquid jet negative pressure suction, the pressure drop and maximum natural suction capacity increased with the increase of liquid volume. When the liquid volume was 14L/min, the maximum natural suction capacity fluctuated within the range of 12.5—14L/min with the increase of column length; during the process of increasing the liquid volume from 4L/min to 14L/min, the pressure drop increased from 20kPa to 300kPa. The change in the length of the mass transfer section had a relatively small impact on the CO2 removal rate, while the liquid to gas ratio and the inlet gas volume had a greater impact. The CO2 removal rate increased with the increase of MDEA solution concentration, and the MDEA solution concentration decreased with the increase of cycle times. After three cycles of use, the absorption capacity significantly decreased. The self-designed micro bubble downflow tubular gas-liquid contactor had good decarbonization performance, with a maximum CO2 removal rate of over 99%. © 2023 Chemical Industry Press. All rights reserved.
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页码：197 / 204
页数：7
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