【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 from 0.14 to 0.50.Increasing pressure（from 0.8 to 1.2 MPa） 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%at1.2 MPa with 400 L·h^-1 gas flow and 200 L·h^-1 water flow,which meets the requirement of CO₂ content in natural gas for vehicle fuel.更多还原

【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 from 0.14 to 0.50.Increasing pressure（from 0.8 to 1.2 MPa） 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%at1.2 MPa with 400 L·h^-1 gas flow and 200 L·h^-1 water flow,which meets the requirement of CO₂ content in natural gas for vehicle fuel.更多还原