GAS-SEPARATION MEMBRANE MODULE FOR OPERATION WITH CHEMICALLY ACTIVE GAS Russian patent published in 2019 - IPC B01D53/22 B01D63/02 B01D63/04 B01D63/10 

FIELD: manufacturing technology.

SUBSTANCE: invention relates to a cost-effective gas-separation membrane module. Gas-separation membrane module used in operation with acid gas contains: a hollow high-pressure vessel open at the first and second ends, made of carbon steel or low-alloyed steel, wherein the high-pressure vessel has a first end surface on said first end and a second end surface on said second end; first end cover made of carbon steel or low-alloy steel, sealing said first end of said high-pressure vessel on said first end surface, wherein said first end cover comprises first channel formed therein; second end cover made of carbon steel or low-alloy steel, sealing said second end of said high pressure vessel on said second end surface, wherein said second end cover has a second channel formed therein, said high pressure vessel having a third channel formed therein; a plurality of gas-separation membranes disposed in a high pressure vessel in the form of a beam, wherein a plurality of membranes are enclosed in a tube grid of solid polymer on at least one end of the beam in a compacted manner, wherein each of said membranes has a first side and a second side, wherein each of said membranes is designed and made for separation of feed gas containing acid gas supplied to its first side, by means of gases penetration through membrane to its second side so that to provide permeate gas with low pressure on second side and residual gas with high pressure on first side, wherein the permeate gas is enriched with one or more gases compared to the residual gas; pipe of first channel, made of high-alloy steel, which is in fluid communication with first channel and one of first sides of membranes and second sides of membranes; pipe of the second channel made of high-alloy steel, which is in fluid communication with the second channel and the other of the first sides of membranes and second sides of membranes; and at least two compressible sealing elements comprising first and second compressible sealing elements, wherein: said first compressible sealing element is compressed between outer surface of first channel pipe and inner surface of first channel, wherein at least one of said first pipe outer surface and said first channel inner surface is provided with corrosion-resistant plating; said second compressible sealing element is compressed between outer surface of second channel pipe and inner surface of second channel, wherein at least one of said outer surface of second channel pipe and said inner surface of second channel is equipped with corrosion-resistant lining.

EFFECT: improved tightness of membrane modules.

15 cl, 7 dwg