DEVICE FOR SEPARATING GAS COMPONENTS CONTAINED IN A GAS MIXTURE, AND USE THEREOF FOR SEPARATING METHANE AND CARBON DIOXIDE FROM A BIOGAS

摘要

The invention relates to a device for separating a first gas component and a second gas component which are contained in a gas mixture, comprising: a liquid/gas absorption separation column (10), comprising a lower tank (12) and an upper separation area (11); means for placing the gas mixture in contact, with a liquid solution capable of selectively absorbing the second gas component, via counter-flow circulation in the separation area (11); and means (19) for recovering the first gas component, separate from the second gas component. The tank (12) stores a volume (16) of absorbing solution. The transverse cross-sectional surface of the tank (12) of the absorption column (10) is no lower than twice the transverse cross-sectional surface of the separation area (11) of the absorption column (10).