CO2 Removal from Biogas byWater Washing System

doi:10.1016/j.cjche.2014.06.001

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. 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. 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

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

Yong Xiao, Hairong Yuan, Yunzhi Pang, Shulin Chen, Baoning Zhu, Dexun Zou, Jingwei Ma, Liang Yu, Xiujin Li. CO₂ Removal from Biogas byWater Washing System[J]. Chin.J.Chem.Eng., 2014, 22(8): 950-953.

Yong Xiao, Hairong Yuan, Yunzhi Pang, Shulin Chen, Baoning Zhu, Dexun Zou, Jingwei Ma, Liang Yu, Xiujin Li. CO₂ Removal from Biogas byWater Washing System[J]. Chinese Journal of Chemical Engineering, 2014, 22(8): 950-953.

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CO₂ Removal from Biogas byWater Washing System

CO₂ Removal from Biogas byWater Washing System

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