Apparatuses and methods are provided for applying accelerated electrons to a gaseous medium by means of an electron beam generator, which has at least one cathode for emitting electrons and at least one electron exit window, wherein a) the at least one cathode is annular and the at least one electron exit window is in the form of an annular first hollow cylinder, the annular electron exit window in the form of the first hollow cylinder forms an inner wall of an annular housing of the electron beam generator, wherein the electrons emitted by the cathode are accelerated to the ring axis of the annular housing; b) an annular second hollow cylinder is arranged within the electron exit window in the form of the first hollow cylinder and delimits an annular space between the first hollow cylinder and the second hollow cylinder; c) a cooling gas is fed through the annular space between the first hollow cylinder and the second hollow cylinder; and d) the gaseous medium to which accelerated electrons are to be applied is fed through the second hollow cylinder.

A purifying device, including: an air guiding part provided with an air passage, a negative ion generator, and an air guiding cover. The negative ion generator includes an emitting head, and the emitting head is arranged to face the air passage. The air guiding part is provided with a first position limiting structure disposed on an inner wall of the air passage, and the first position limiting structure is provided with a position limiting groove configured to receive the emitting head. The air guiding cover is arranged on a top of the inner wall of the air passage and configured to press and cover the position limiting groove, and the inner wall of the air passage is configured to support the air guiding cover.

An atmosphere purification reactor using an electron beam and an atmosphere purification apparatus including the same are disclosed. The atmosphere purification reactor using an electron beam according to an exemplary embodiment of the present invention includes a housing which has a predetermined length and is formed to have a hollow form such that a fluid introduced from an outside passes through the housing, a guide part which is disposed in the housing in a longitudinal direction and guides a moving path of the fluid such that the fluid moves while rotating, and a transmissive part which is provided at one side of the housing so as to transmit an electron beam into the housing.

Disclosed herein is an air-water extraction system that includes a water selective membrane configured to transport water from humid air via selective diffusion through the water selective membrane; a low pressure chamber in fluid communication with the water selective membrane and a hydrogen gas inlet configured to deliver a dry hydrogen to the low pressure gas chamber, a membrane and electrode assembly comprising an anode, a proton exchange membrane, a cathode, and a power supply; wherein the anode is in fluid communication with the low pressure chamber, a high pressure chamber in fluid communication with the cathode for receiving a saturated hydrogen and a liquid water from the cathode; a water conduit in fluid communication with the high pressure chamber configured to remove the liquid water from the high pressure chamber, and a hydrogen conduit for removing the saturated hydrogen from the high pressure chamber.

The invention concerns an electrostatic precipitator comprising an ionisation stage, a collector stage and a power supply. The power supply comprises a first high-voltage power supply unit for applying a first DC high voltage to the ionization stage and a second high-voltage power supply unit for applying a second DC high voltage to the collector stage. The first high-voltage power supply unit is configured to operate the ionization stage current-controlled. A current sensor required for this is advantageously arranged in the return line carrying low voltage, for which purpose the first high-voltage power supply unit and the second high-voltage power supply unit are galvanically isolated from the mains connection and from each other.

The present disclosure relates to methods of scrubbing of gas by exposure to electrons and apparatuses therefor. Such methods and apparatuses could be used to reduce harmful emissions created by the burning of fossil fuels, e.g. to power ships. According to one aspect there is provided apparatus for electron irradiation scrubbing, said apparatus comprising: an anode; a cathode a nanostructure located between said anode and said cathode, said nanostructure being configured to field-emit electrons in response to the presence of an electric field between the anode and cathode when a potential difference is established therebetween; and a housing coupled to said nanostructure and configured for locating the nanostructure so that it extends into a container containing gas to be scrubbed such that an interior of said container can be exposed to said electrons. According to further aspects there are provided systems comprising such apparatus and methods making use of it.

Provided are a method for treating sulfur hexafluoride and an apparatus for collecting and treating by-products. The method for treating sulfur hexafluoride, and the apparatus for collecting and treating by-products according to the present invention are a significantly effective method and apparatus capable of safely treating sulfur hexafluoride at low cost.

A system for neutralizing exhaust gases from an aircraft at altitude includes a turbofan jet engine. The turbofan jet engine creates exhaust gases. An exhaust is located within the turbofan jet engine. The exhaust has an interior volume. At least one corona discharge unit is located within the interior volume of the exhaust. The at least one corona discharge unit creates electrical discharges comprising high-speed relativistic electrons and gamma rays within the exhaust. The exhaust gases and the electrical discharges are directed to interact with one another in the interior volume of the exhaust. The interaction generates positively charged plasma ions within the exhaust gases. The exhaust gases are neutralized before leaving the turbofan jet engine.

A process for direct compression of hydrogen separated from a hydrocarbon source is described herein. The process comprises a first zone wherein a hydrocarbon reaction that produce hydrogen occurs, a ceramic proton conductor which under an applied electric field transport hydrogen from said first zone to said second zone, and a second zone where compressed hydrogen is produced. The heat energy generated by ohmic resistance in the membrane is partially recuperated as chemical energy in the hydrocarbon reforming process to generate hydrogen.

A self-power air refresher system includes an air refresher apparatus and a plant microbial fuel cell (PMFC). The air refresher apparatus includes a fan, a filter located on an air-outlet path of the fan, and an energy storage device connected to the fan. The PMFC is disposed on the air-outlet path and includes soil contained in a container, a plant planted in the soil, and a first and second electrodes. The interaction between roots of the plant and microorganisms near the roots generates electrons, and the electrons are transmitted to the energy storage device through the first and second electrodes installed in the soil so as to enable the energy storage device to supply power to the fan. The air that has passed through the filter enters the soil of the PMFC, and is filtered by the plant and then discharged from the container.