A gas separation membrane module includes a seal between a higher pressure gas and a lower pressure gas. The seal includes a compressible sealing member in between sealing surfaces. At least one of the sealing surfaces has corrosion-resistant cladding provided over either low alloy steel or high alloy steel. The cladding reduce the possibility of a seal failure due to corrosion of low alloy or high alloy steel exposed to acid gases or condensed moisture containing acid gases dissolved therein while at the same not requiring that all surfaces of the membrane module exposed to acid gases be provided with cladding.

A gas separation membrane module includes a seal between a higher pressure gas and a lower pressure gas. The seal includes a compressible sealing member in between sealing surfaces. At least one of the sealing surfaces has corrosion-resistant cladding provided over either low alloy steel or high alloy steel.

The cladding reduce the possibility of a seal failure due to corrosion of low alloy or high alloy steel exposed to acid gases or condensed moisture containing acid gases dissolved therein while at the same not requiring that all surfaces of the membrane module exposed to acid gases be provided with cladding.

A cover member (36) that forms an end of a housing (26) of an oxygenator (10) has a recessed wall portion (88) recessed relative to a cover main body (74) further toward a side of a gas exchange unit (30) than an inner surface (74a). A pressure control hole (86) is formed through a main body (74) of the cover member (36), and a sampling port (90a) is disposed in the second recessed wall portion (88) to collect gas guided out from the gas exchange unit (30). The sampling port (90a) faces, at its inner opening portion (92), a second outlet side end face (31b) of the gas exchange unit (30).

The present invention relates to a membrane humidifier for a fuel cell, which can prevent a decrease in humidification efficiency due to a pressure difference between the inside and outside of a membrane humidifier, the membrane humidifier for a fuel cell, according to an embodiment of the present invention, comprising: a middle case having a module insertion part inside; a cap case coupled to the middle case; a hollow fiber membrane module inserted to the module insertion part; and a pressure buffer part between the inner wall of the middle case and the module insertion part.

A reverse osmosis system forming part of a reverse osmosis stage of a desalination water treatment plant, the reverse osmosis system has: a reverse osmosis unit having a reverse osmosis membrane housed in a pressure vessel extending longitudinally along an axis, and having a port extending along the axis: a conduit; and a permeate outlet segment connecting the port to the conduit, the permeate outlet segment having: a first connecting end hydraulically connected to the port of the reverse osmosis unit; a second connecting end hydraulically connected to the conduit; an elbow between the first connecting end and the second connecting end; and an inspection port stemming from the elbow, the inspection port being aligned with the first connecting end along the axis.

The present invention relates to a membrane humidifier for a fuel cell, which can prevent a decrease in humidification efficiency due to a pressure difference between the inside and outside of a membrane humidifier, the membrane humidifier for a fuel cell, according to an embodiment of the present invention, comprising: a middle case having a module insertion part inside; a cap case coupled to the middle case; a hollow fiber membrane module inserted to the module insertion part; and a pressure buffer part between the inner wall of the middle case and the module insertion part.

Stack assembly comprising a hollow external housing having a central axis, the external housing extending from a first end to a second end and enclosing a housing space, and a membrane stack comprising a plurality of membranes, wherein the membrane slack is positionable inside the external housing and a number of side plates extending substantially parallel to the central axis, wherein each side plate of the number of side plates is associated with a side of the membrane stack and extending along the associated side and a number of sealing connectors that extend substantially parallel to the central axis and adjacent with an inner surface of the external housing, wherein each sealing connector of the number of sealing connectors is configured to connect two side plates to each other, wherein the sealing connectors and the side plates cooperate to form an enclosing structure, and wherein, in use of the stack assembly, the enclosing structure encloses the membrane stack. The invention also relates to a method for assembling a stack assembly and a method for generating energy or performing an electrodialysis process.

The present invention addresses to a high-pressure vessel for packaging hollow fiber type membranes with application in the field of separation process with contactors with membranes aiming at a compact device/piece of equipment configured for the packaging of hollow fiber type bundles that can be used for various fluid separation processes such as liquid-liquid, liquid-gas and gas-gas, capable of working at high-pressures, enabling adequate hydrodynamic conditions and easily scalable. It is called a module the general piece of equipment, consisting of the vessel (A or C), object of the present invention, and the membranes packed inside the vessel. This piece of equipment consists of a vessel inside which the membranes are placed (14), and two heads attached at the ends (B or D). Each head has two connection points, thus allowing this device to be used with membrane contactors-type separation systems, such as classical permeation systems (liquid-liquid, gas-gas, pervaporation).

The present disclosure is directed to a membrane vessel, the membrane vessel comprising: a cylindrical tube for holding a membrane element, the cylindrical tube having a first end and a second end; at least one flared end of the cylindrical tube wherein the tube flares outward at an angle from the end of the cylindrical tube; a cap configured to fit into the end of the cylindrical tube, the cap comprising an inclined distal perimeter surface configured to contact the inner surface of the flared tube.