화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.38, No.1, 129-134, January, 2021
DOI10.1007/s11814-020-0686-z  Export Citation
Enhancement of CO2 desorption using ultrasound and vacuum in water scrubbing biogas upgrading system
Fuqiang Jin1, 2, †, Haipeng Xu1, 2, Dongliang Hua1, 2, †, Lei Chen1, 2, Yan Li1, 2, Yuxiao Zhao1, 2, and Bin Zuo3
  • 1Shandong Key Laboratory of Biomass Gasification Technology, Energy Research Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
  • 2School of Energy and Power Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
  • 3Laoling Shengli New Energy Co., Ltd, Dezhou 253600, China
E-mail:,
Ultrasound and vacuum were respectively employed to enhance CO2 desorption in a water scrubbing biogas upgrading system. Results showed that incomplete CO2 desorption could cause a high CO2 content in the water and seriously affect the purity of the product gas. Vacuum had a strong enhancement effect on CO2 desorption. When a vacuum of 0.04MPa was used to enhance CO2 desorption, the amount of the stripping air could be reduced to 1/16-th of that without enhancement, indicating that vacuum could greatly enhance CO2 desorption and significantly decrease the amount of the stripping air, which was expected to reduce a large amount of energy consumption. In contrast, the enhancement effect of ultrasound was not so obvious for CO2 desorption in the desorption column with air stripping, since the solution could be well desorbed by gas stripping, though ultrasound could strongly affect the static CO2 desorption.
Keywords:Water Scrubbing;Biogas Upgrading;Vacuum;Ultrasound;Desorption
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