A system and method for treating flue gas of a boiler based on solar energy are provided, wherein a heat pump is connected with a heat collector via first and second valves, a carbon dioxide electrolysis chamber is connected with a flue gas pretreatment chamber and a power distribution control module for electrolyzing and reducing carbon dioxide, a gas phase separation chamber is connected with a gas phase outlet to separate a mixture, and discharge the separated gas phase products; a Fischer-Tropsch reaction chamber is connected with the gas phase separation chamber to pass the separated carbon monoxide and hydrogen into a flowing reaction cell, a liquid phase product separation chamber is connected with a liquid phase outlet to separate the liquid phase hydrocarbon fuel products, and separate and supplement electrolyte; an electrolyte cooling circulation chamber is connected with the liquid phase product separation chamber.

According to one embodiment, a carbon dioxide adsorption-desorption device including an electrode that includes a porous composite is provided. The porous composite includes an electro-conductive component and a porous material on the electro-conductive component. The porous material has pores of an angstrom size or a nanometer size, and includes a moiety exhibiting redox activity according to electrical response.

The present invention relates to an extraction unit for extracting hydrogen from a gas mixture, including a tube or vessel, including a transit channel for passing a gas mixture in a feed-through direction from a receiving opening to a dispensing opening, which tube or vessel is arranged to be received in-line in a gas transport pipe, at least one membrane-electrode assembly arranged in the tube or vessel with at least one anode, a membrane and a cathode. The assembly is arranged such that an anode surface faces the transit channel and that a cathode surface faces away from the transit channel to a drain separated from the feed-through channel. The anode and the cathode are provided with a connector for an electrical voltage source.

A method of operating a solid oxide electrolyzer system includes providing a water inlet stream to at least one solid oxide electrolyzer cell (SOEC), generating a wet hydrogen product stream from the at least one SOEC, providing the wet hydrogen product stream to at least one hydrogen pump, generating a compressed hydrogen product and an unpumped effluent in the at least one hydrogen pump, and recycling at least a portion of the unpumped effluent upstream of the at least one hydrogen pump.

In an aspect, a hydrogen separation unit includes an electrochemical cell stack that includes a separator stack located in between an anode side and a cathode side; a mixed gas conduit for receiving a mixed gas stream to the anode side; an anode removal conduit for removing a helium rich stream from the anode side; and a cathode removal conduit for removing a hydrogen rich stream from the cathode side. The separation stack includes a plurality of electrochemical cells, each of which includes a proton exchange membrane located in between an anode and a cathode. The proton exchange membrane can include a cation. The separation stack can be a cascading separation stack.

An onboard oxygen generation system for an aircraft is operatively connected to an oxygen tank of an oxygen supply system for the aircraft. The oxygen generation system includes an oxygen generator, a water source connected to the oxygen generator, and a power source connected to the oxygen generator. Oxygen produced by the oxygen generator from the water is supplied to the oxygen tank. Hydrogen gas produced by the oxygen generator can be combined with air to form water vapor and either discharged overboard the aircraft through a discharge vent or used to supply water to the water source.

A method for separating a Lewis acid gas from a fluid mixture, comprising contacting the fluid mixture with a reduced electroactive species; a non-aqueous electrolyte; and a stabilizing additive to form an anion adduct between the Lewis acid gas and the reduced electroactive species, wherein the electroactive species comprises an oxidized state, and at least one reduced state that bonds with the Lewis acid gas to form the anion adduct, wherein the stabilizing additive comprises a cationic Lewis acid, a hydrogen-bond donor, or a combination thereof, and the stabilizing additive is present in an effective amount to kinetically favor the forming of the anion adduct from the reduced electroactive species and thermodynamically favor the forming of the anion adduct in the thermodynamic equilibrium between the anion adduct and the reduced electroactive species.

A device for obtaining a newly generated oxygen from an atmospheric environment is disclosed. The device includes a container having an inlet and an outlet, a cathode accommodated in the container and being in contact with an environmental oxygen in the atmospheric environment, an anode accommodated in the container and disposed at a position opposite to the cathode, an electrolyte accommodated in the container and immersing therein the cathode and the anode, a moisture removal unit disposed at the outlet having an outlet position, and a gas permeable element disposed at the outlet, wherein the cathode is disposed at the inlet, and the gas permeable element is disposed at a position closer to the outlet position than the moisture removal unit.

In an aspect, a bipolar membrane cell comprises a separation layer located in between an anode half-cell and a cathode half-cell; wherein the anode half-cell comprises a proton exchange membrane and an anode; where the proton exchange membrane is located in between the anode and the separation layer; wherein the cathode half-cell comprises an anion exchange membrane and a cathode; wherein the anion exchange membrane is located in between the cathode and the separation layer; and an external circuit connecting the anode and the cathode.

An environment control system utilizes oxygen and humidity control devices that are coupled with an enclosure to independently control the oxygen concentration and the humidity level within the enclosure. An oxygen depletion device may be an oxygen depletion electrolyzer cell that reacts with oxygen within the cell and produces water through electrochemical reactions. A desiccating device may be g, a dehumidification electrolyzer cell, a desiccator, a membrane desiccator or a condenser. A controller may control the amount of voltage and/or current provided to the oxygen depletion electrolyzer cell and therefore the rate of oxygen reduction and may control the amount of voltage and/or current provided to the dehumidification electrolyzer cell and therefore the rate of humidity reduction. The oxygen level may be determined by the measurement of voltage and a limiting current of the oxygen depletion electrolyzer cell. The enclosure may be a food or artifact enclosure.