The present invention relates to a fuel cell membrane humidifier which can prevent gas leakage due to repetition of driving and stopping of a fuel cell, can be manufactured with relatively low manufacturing costs and high productivity, and can suppress vibrations generated during operation. A fuel cell membrane humidifier according to an embodiment of the present invention comprises: a humidification module for humidifying air supplied from the outside with moisture in exhaust gas discharged from a fuel cell stack; and caps respectively coupled to both ends of the humidification module. The humidification module comprises: a mid-case which has both ends opened and a step difference formed on the inner circumferential surface thereof; at least one cartridge which is disposed within the mid-case and accommodates a plurality of hollow fiber membranes; a fixed layer in which ends of the hollow fiber membranes are potted and supported by the inner wall of the mid-case; a bracket which is supported by the step difference of the mid-case and is in contact with the fixed layer; and a packing member which has a groove into which an end of the mid-case is fitted and is in contact with the bracket. In addition, the humidification module has a damping protrusion which is formed on the inner wall of the mid-case and fitted into the fixed layer to suppress vibration generated in the cartridge by air flowing inside the humidification module.

A hollow fiber membrane bundle useful for manufacturing a wide variety of hollow fiber membrane modules having different flow configurations includes hollow fiber membranes arranged around a porous support tube, a cured resin tubesheet formed at first end of the bundle, and either a cured resin nub or a cured resin tubesheet formed at a second end of the bundle. The bore(s) of the hollow fiber membranes are open at a face of the tubesheet adjacent the first end of the bundle. The tubesheet has an annular structure that encapsulates the hollow fiber membranes and the porous support tube at the first end of the bundle but which does not completely block a bore of the porous support tube, wherein the collection tube has a plurality of orifices formed therein at least at positions adjacent the nub.

An electrochemical separation device includes a first electrode, a second electrode, and a cell stack including a plurality of sub-blocks each having alternating depleting compartments and concentrating compartments and each including frame and channel portions disposed between the first electrode and the second electrode. An internal seal formed of a first material is disposed between and in contact with the channel portions between adjacent sub-blocks in the cell stack and configured to prevent leakage between depleting compartments and concentrating compartments in the adjacent sub-blocks. An external seal formed of a second material having at least one material parameter different from the first material is disposed between and in contact with the frames of the adjacent sub-blocks in the cell stack and configured to prevent leakage from an internal volume of the electrochemical separation device to outside of the electrochemical separation device.

The present invention relates to a fuel cell membrane humidifier capable of improving humidification efficiency by performing two-stage humidification, and a fuel cell system comprising same. A fuel cell membrane humidifier according to an embodiment of the present invention comprises: a dry air supply means; a fuel cell membrane humidifier which performs two-stage humidification on the dry air supplied from the dry air supply means; a fuel cell stack for generating energy and humid exhaust gas by reacting the humidified air supplied from the fuel cell membrane humidifier with hydrogen; and a bypass flow path for bypassing a portion of the exhaust gas generated in the fuel cell stack. The fuel cell membrane humidifier comprises: a mid-case; a cap which is fastened with the mid-case and has a bypass inlet connected to the bypass flow path; a mixing humidifier which performs mixed humidification by mixing the dry air introduced through the cap and the exhaust gas introduced through the bypass inlet; and at least one cartridge which is disposed in the mid-case and accommodates a plurality of hollow fiber membranes that perform moisture exchange.

Described are filtration membranes that include a porous fluoropolymer membrane and thermally stable ionic groups; filters and filter components that include these filtration membranes; methods of making the filtration membranes, filters, and filter components; and method of using a filtration membrane, filter component, or filter to remove unwanted material from fluid.

The present disclosure describes a field flow fractionator including (1) a top plate assembly including (a) a first non-corrosive material, and (b) at least three fluid fittings machined (simpler) into the material, (2) a spacer, (3) a membrane, (4) a bottom plate assembly including (a) a second non-corrosive material, (b) a cavity machined into the second non-corrosive material, (c) a frit configured to be placed into the cavity, and (d) at least one bottom plate o-ring configured to seal the bottom plate assembly to the spacer, and (5) where the top plate assembly, the spacer, the membrane, and the bottom assembly define a separation channel. In an embodiment, the at least three fluid fittings including a fitting for an in-flow, a fitting for an out-flow, and a fitting for a cross-flow.

An object of the present invention is to provide a separation membrane module in which an end member is prevented from coming out even at the occurrence of a reverse pressure or the like. The invention relates to a separation membrane module which is equipped with a cylinder-shaped housing and a tubular separation membrane and which takes out a fluid which has permeated the tubular separation membrane. An end pipe is connected to one end portion of the tubular separation membrane; the end pipe is supported by a support plate which is disposed so as to traverse the housing; and an end plug is connected to the other end portion of the tubular separation membrane. The separation membrane module is further equipped with a coming-out preventive member.

A piece of substrate material is formed under heat and pressure against a cavity into a shaped substrate sheet having one or more depressions. Two substrate sheets are bonded together to form a substrate wherein the one or more depressions form one or more interior channels. The substrate, if not formed with pre-coated substrate material, is coated with a dope and quenched to form a filtering membrane. A plurality of membranes may be placed side by side to form a bundle with permeating ends of the membrane, which are open to the one or more interior channels, separated by gaps or spacers. The bundle is connected to a header to produce a module. The module can be assembled into a cassette.

The present invention relates to a hollow-fiber membrane module including: a hollow-fiber membrane bundle including a plurality of hollow-fiber membranes bundled in a potting part; a housing enclosing the hollow-fiber membrane bundle; and a protective member contacting with an outer surface of the potting part and continuously covering the outer surface, in which the protective member has a notched part through which one end of the protective member communicates with another end in a longitudinal direction of the hollow-fiber membrane bundle.

A filter element assembly comprises a filtration media and an end fitting through which a sealing connection is made between the assembly and a housing so that the end fitting defines a flow path between the housing and the filtration media. The end fitting has first and second parts which can be separated axially, and the filter media extends axially away from the second part in a direction away from the first part. Each of the parts has an outer wall with an external threaded cylindrical surface, and each of the first and second parts has an axially facing edge surface which faces the other of the first and second parts, the facing edge surfaces shaped to define a pre-determined relative rotational alignment of the first and second parts, where the parts fit together so that the threads on the external surfaces of the parts form a continuous thread.