DOUBLE-CIRCUIT MEMBRANE-ADSORPTION UNIT FOR COMPRESSED GAS DRYING Russian patent published in 2020 - IPC B01D53/47 B01D53/26 

FIELD: gas industry.

SUBSTANCE: invention relates to a double-circuit membrane-adsorption plant for drying compressed gases and gas mixtures, and can be used for drying technical and natural gas for subsequent liquefaction, transportation and use. Proposed plant comprises three alternately operated absorbers 1–3 filled with solid adsorbent, selective for water vapor, connected in parallel and successively passing filling, production and regeneration stages, membrane steam separator consisting of expansion receiver 4, compressor 5, highly selective to water vapor of membrane module 6 and condenser 7, and also system of valves 8–19. At that inlet branch pipe of expansion receiver 4 through three valves is connected to inputs of adsorbers 1–3, and outlet branch pipe is connected to compressor 5 inlet. Compressor outlet pipe 5 is connected to inlet of membrane module 6, retentate of which is connected through three adjustable valves to outlet branch pipes of adsorbers 1–3, and permeate is connected to input of capacitor 7. Outlet pipe of condenser 7 is connected to the input of compressor 5.

EFFECT: invention reduces power consumption of sorption systems and increases energy efficiency and productivity of adsorption drying of compressed gas.

5 cl, 1 dwg