SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2014, Vol. 22 ›› Issue (8): 950-953.DOI: 10.1016/j.cjche.2014.06.001

• ENERGY, RESOURCES AND ENVIRONMENTAL TECHNOLOGY • Previous Articles    

CO2 Removal from Biogas byWater Washing System

Yong Xiao1, Hairong Yuan1, Yunzhi Pang1, Shulin Chen2, Baoning Zhu1, Dexun Zou1, Jingwei Ma2, Liang Yu2, Xiujin Li1   

  1. 1. Centre for Resource and Environmental Research, Beijing University of Chemical Technology, Beijing 100029, China;
    2. Department of Biological Systems Engineering, Washington State University, Pullman,WA 99164, USA
  • Received:2012-11-08 Revised:2013-06-17 Online:2014-11-04 Published:2014-08-28
  • Supported by:

    Supported by the National Technology Research and Development Program of China (2008AA062402), the China–US International Cooperation Project (2011DFA90800), and the Ministry of Science and Technology, China.

CO2 Removal from Biogas byWater Washing System

Yong Xiao1, Hairong Yuan1, Yunzhi Pang1, Shulin Chen2, Baoning Zhu1, Dexun Zou1, Jingwei Ma2, Liang Yu2, Xiujin Li1   

  1. 1. Centre for Resource and Environmental Research, Beijing University of Chemical Technology, Beijing 100029, China;
    2. Department of Biological Systems Engineering, Washington State University, Pullman,WA 99164, USA
  • 通讯作者: Xiujin Li
  • 基金资助:

    Supported by the National Technology Research and Development Program of China (2008AA062402), the China–US International Cooperation Project (2011DFA90800), and the Ministry of Science and Technology, China.

Abstract: CO2 removal from biogas by water washing system was investigated with various parameters, including liquid/gas ratio, pressure, temperature, and CO2 content. The results indicate that CO2 removal ratio could reach 34.6%- 94.2% as liquid/gas ratio increased from0.14 to 0.50. Increasing pressure (from0.8 to 1.2MPa) could improve gas purification with a constant inflow rate of gas. Temperature played a key role in the process and lower temperature in absorption tower was beneficial for reducing CO2 content. CO2 removal ratio could reach 24.4%-83.2% when CO2 content in the simulated gas was 25%-45%. The lowest CO2 content after absorption was 2.6% at 1.2MPawith 400 L·h-1 gas flowand 200 L·h-1 water flow,whichmeets the requirement of CO2 content in natural gas for vehicle fuel.

Key words: Biogas purification, CO2 removal, Water washing, Pilot system

摘要: CO2 removal from biogas by water washing system was investigated with various parameters, including liquid/gas ratio, pressure, temperature, and CO2 content. The results indicate that CO2 removal ratio could reach 34.6%- 94.2% as liquid/gas ratio increased from0.14 to 0.50. Increasing pressure (from0.8 to 1.2MPa) could improve gas purification with a constant inflow rate of gas. Temperature played a key role in the process and lower temperature in absorption tower was beneficial for reducing CO2 content. CO2 removal ratio could reach 24.4%-83.2% when CO2 content in the simulated gas was 25%-45%. The lowest CO2 content after absorption was 2.6% at 1.2MPawith 400 L·h-1 gas flowand 200 L·h-1 water flow,whichmeets the requirement of CO2 content in natural gas for vehicle fuel.

关键词: Biogas purification, CO2 removal, Water washing, Pilot system