In some embodiments, a multistage scrubber that includes a plurality of stages, each stage comprising one or more scrubbing modules having adsorbents configured to adsorb and remove molecules from a flowing mixture of gas traversing the multi-stage scrubber is disclosed. The sorbents may be used in repeatable adsorption-regeneration swing cycles including concentration swing adsorption (CSA) cycle, temperature swing adsorption (TSA) cycle and pressure swing adsorption (PSA) cycle.

The invention relates to a device (1) for separating and collecting water from a gas stream, comprising a water separator (2), configured as a riser, and a water tank (3) which is arranged below the water separator (2), wherein the water separator (2) has, at its lower end, an outlet (4) which opens into the water tank (3), a lateral gas inlet (5), and a gas outlet (6) which is arranged at its upper end.

The invention also relates to a fuel cell system (20) with a corresponding device (1) and to a method for operating a fuel cell system (20).

A device includes a container, an oxygen-to-water selectively permeable membrane supported by the container, a chamber disposed in the container to hold a hydrogen generating fuel, and a proton exchange membrane fuel cell supported within the container between the oxygen-to-water selectively permeable membrane and the chamber.

A battery module has an improved structure to appropriately control the discharge of gas or flame generated inside the battery module and effectively block the introduction of external foreign substances. The battery module includes a cell assembly having at least one battery cell; a module case configured to accommodate the cell assembly in an inner space thereof and having a venting hole formed therein to discharge a venting gas generated from the cell assembly; a venting unit located at an outer side of the module case and configured so that the venting gas discharged from the venting hole is introduced therein and discharged to the outside; and a filter unit at least partially located inside the venting unit and configured to filter substances introduced into the venting unit.

Provided is an acid gas separation membrane that includes an acid gas separation layer containing a hydrophilic resin and an acid gas carrier, a hydrophobic porous membrane layer supporting the acid gas separation layer, a porous membrane protective layer protecting the acid gas separation layer, and a first layer having a Gurley number of less than or equal to 0.5 times a Gurley number of the hydrophobic porous membrane layer and the porous membrane protective layer, the Gurley number of the first layer being greater than or equal to 0.1 s and less than or equal to 30 s. Also provided is an acid gas separation method using the acid gas separation membrane, as well as an acid gas separation module and an acid gas separation apparatus that each include the acid gas separation membrane.

A device for decreasing hydrogen concentration of a fuel cell system is installed in an exhaust system for discharging exhaust gas which includes hydrogen and air and is discharged from fuel cells to the atmosphere through an exhaust line. The device includes a catalyst diluter having catalysts for diluting the hydrogen in an exhaust gas by generating a catalytic reaction and connected to the exhaust line. An air diluter is disposed outside the catalyst diluter and guides external air to a gas exit side of the catalyst diluter.

An exhaust moisture removal system for an electric generation system including: a sorbent wheel; an interchanger; a hydrogen evaporator including an exhaust portion; and an exhaust outflow stream passageway configured to convey an exhaust from a hydrogen fuel cell of the electric generation system through a first pass and then through a second pass, the second pass being located downstream of the first pass, wherein the first pass of the exhaust outflow stream passageway passes through the sorbent wheel, then through the interchanger, and then through the hydrogen evaporator, and wherein the second pass of the exhaust outflow stream passageway passes through the hydrogen evaporator, then through the interchanger, and then through the sorbent wheel.

A carbon dioxide capture system for capturing carbon dioxide from an exhaust stream. The system may include a fuel cell configured to output a first exhaust stream comprising carbon dioxide and water. The system may further include an electrolyzer cell configured to receive a first portion of the first exhaust stream and output a second exhaust stream comprising oxygen and carbon dioxide. The fuel cell may be a solid oxide fuel cell. The electrolyzer cell may be a molten carbonate electrolysis cell.

A membrane-forming dope for non-solvent induced phase separation methods, the membrane-forming dope comprising 15 to 40 wt. % of polysulfone-based resin, 5 to 60 wt. % of polyvinylpyrrolidone, and 0.1 to 10 wt. % of polyoxyethylene sorbitan fatty acid ester, all of which are dissolved in a water-soluble organic solvent solution. A porous hollow fiber membrane is produced by spinning the membrane-forming dope by a non-solvent induced phase separation method using an aqueous liquid as a core liquid. The obtained high-performance porous hollow fiber membrane can be used as a water vapor permeable membrane used in fuel cells, because its water vapor permeability is not significantly reduced even after use in a high temperature environment such as, for example, 100 to 120? C.

An integrated gas management device (GMD) for a fuel cell has a gas-to-gas humidifier for transferring water from a second gas to a first gas; and a heat exchanger attached to a first end of the humidifier core for cooling the first gas. The GMD may optionally have a thermal isolation plate between the heat exchanger and the first end of the humidifier core. The GMD further has a bypass line to allow the first gas to bypass the humidifier. The first gas may be cathode charge air and the second gas may be cathode exhaust.