A method of separating a composition containing at least one organofluorine compound from at least one inorganic compound by contacts the composition with a semipermeable membrane. Other methods separate a organofluorine compound from a composition containing at least one other organofluorine compound or chlorocarbon. Methods also include isolating a single organofluorine compound from a composition comprising a mixture of organofluorine compounds, chlorocarbons, and/or inorganic compounds.

A method of separating a composition containing at least one organofluorine compound from at least one inorganic compound by contacts the composition with a semipermeable membrane. Other methods separate a organofluorine compound from a composition containing at least one other organofluorine compound or chlorocarbon. Methods also include isolating a single organofluorine compound from a composition comprising a mixture of organofluorine compounds, chlorocarbons, and/or inorganic compounds.

An electrical switching device is provided for interrupting an electrical connection. The device has a switching chamber and two contact pieces being arranged directly in the switching chamber or in an encapsulated housing arranged in the switching chamber and configured to be gas-tight in relation to the switching chamber. The contact pieces are movable relative to each other to bring about a switching action. A fluid insulation medium is also provided, which is arranged in the switching chamber or in a storage volume which can be connected to the switching chamber. The switching chamber or the storage volume has an outlet for letting out the fluid insulation medium. A filter is provided at or adjacent to the outlet, the filter configured to filter gaseous components of the insulation medium, or the reaction products thereof, conducted through the outlet.

An electrical switching device is provided for interrupting an electrical connection. The device has a switching chamber and two contact pieces being arranged directly in the switching chamber or in an encapsulated housing arranged in the switching chamber and configured to be gas-tight in relation to the switching chamber. The contact pieces are movable relative to each other to bring about a switching action. A fluid insulation medium is also provided, which is arranged in the switching chamber or in a storage volume which can be connected to the switching chamber. The switching chamber or the storage volume has an outlet for letting out the fluid insulation medium. A filter is provided at or adjacent to the outlet, the filter configured to filter gaseous components of the insulation medium, or the reaction products thereof, conducted through the outlet.

Provided is a novel exhaust gas processing device which allows processing target exhaust gas having a large flow volume to be handled with a small-capacity plasma generator, by preheating a high-temperature decomposable gas component of the processing target exhaust gas. An exhaust gas processing device 10 preheats processing target exhaust gas F in the presence of moisture with heat from at least either an electric heater 15 or a heat exchanger 17 and subsequently thermally decomposes the exhaust gas with an atmospheric pressure plasma P. A device main body 11 has a heating decomposition chamber T therein. A plasma generator 14 is of a non-transferred type and is installed at a top surface portion 11a of the device main body 11. A reactor 12 has a cylindrical shape and is installed within the device main body 11 such that an upper end opening 12i thereof is directed toward a plasma emission port 14f of the plasma generator 14. A moisture supply unit 18 is provided at an inlet side of the device main body 11. At least either the electric heater 15 or the heat exchanger 17 is disposed in a first space T1.

Provided is a novel exhaust gas processing device which allows processing target exhaust gas having a large flow volume to be handled with a small-capacity plasma generator, by preheating a high-temperature decomposable gas component of the processing target exhaust gas. An exhaust gas processing device 10 preheats processing target exhaust gas F in the presence of moisture with heat from at least either an electric heater 15 or a heat exchanger 17 and subsequently thermally decomposes the exhaust gas with an atmospheric pressure plasma P. A device main body 11 has a heating decomposition chamber T therein. A plasma generator 14 is of a non-transferred type and is installed at a top surface portion 11a of the device main body 11. A reactor 12 has a cylindrical shape and is installed within the device main body 11 such that an upper end opening 12i thereof is directed toward a plasma emission port 14f of the plasma generator 14. A moisture supply unit 18 is provided at an inlet side of the device main body 11. At least either the electric heater 15 or the heat exchanger 17 is disposed in a first space T1.

Process for treating a medium by the removal or destruction of one or more undesired substances present in said medium, comprising combining hydrogen peroxide and alkali hydroxide in an aqueous solution to form superoxide, and bringing the resultant superoxide-containing solution into contact with said medium. The process is useful for the destruction of halogenated organic pollutants and also for carbon dioxide removal from flue gases. The process can also be applied for soil remediation.

The present disclosure provides a method for converting the target gas contained in the exhaust gas in plasma phase and an apparatus for implementing the method, the method comprising the steps of: generating a plasma in a conversion region in which the conversion of the target gas occurs; supplying, to the conversion region, a conversion promoting agent containing a conversion promoting element of which the first ionization energy is not greater than 10 eV for promoting the conversion of the target gas; supplying, to the conversion region, a conversion agent that produces conversion products by combining with the dissociation products of the target gas and prevents the dissociation products from recombining into the target gas; and supplying the exhaust gas containing the target gas to the conversion region.

The present disclosure provides a method for converting the target gas contained in the exhaust gas in plasma phase and an apparatus for implementing the method, the method comprising the steps of: generating a plasma in a conversion region in which the conversion of the target gas occurs; supplying, to the conversion region, a conversion promoting agent containing a conversion promoting element of which the first ionization energy is not greater than 10 eV for promoting the conversion of the target gas; supplying, to the conversion region, a conversion agent that produces conversion products by combining with the dissociation products of the target gas and prevents the dissociation products from recombining into the target gas; and supplying the exhaust gas containing the target gas to the conversion region.

An exhaust gas treatment system capable of purifying exhaust gas containing moisture includes superheated steam generating pipes (20, 40) and a housing (10). The superheated steam generating pipe (20, 40) is formed of a material capable of generating heat by energization, and has a flow path (200, 400) through which exhaust gas can flow, and moisture contained in the exhaust gas flowing through the flow path is converted into superheated steam by the heat. The housing (10) is provided to accommodate the superheated steam generating pipe, is formed to allow the exhaust gas before being introduced into the flow path to flow therethrough and can preheat the exhaust gas by the heat of the superheated steam generating pipe.