AUTOMATED MEMBRANE-ABSORPTION GAS SEPARATING SYSTEM ENSURING BIOGAS USE PROPERTIES Russian patent published in 2016 - IPC B01D63/00 B01D53/14 

FIELD: oil and gas industry.

SUBSTANCE: automated membrane-absorption gas separating system comprising two connected in series membrane-contactor modules, wherein each membrane-contactor module comprises a contactor absorber and a contactor desorber with the system ensuring a recirculation flow between the absorber and desorber. The first membrane-contactor module is intended to clean biogas from CO₂ admixtures, and the second membrane-contactor module is intended to dry the biogas from water vapours, the difference is that at the output of the second membrane-contactor module a gas mixture humidity sensor is installed, it is connected with a unit of regulating the recirculation flow during the biogas dehydration in the second membrane-contactor module, and a sensor of carbon dioxide content in the gas mixture connected with the unit of regulating the flow and temperature of the recirculating medium during biogas cleaning in the first membrane-contactor module.

EFFECT: automation of biogas cleaning and dehydration.

1 dwg