Abstract: The combustion controller controls the fuel and air that are supplied to the combustion furnace for burning substances, and addresses the aforementioned object by including: fuel supply unit for supplying fuel and air into the combustion furnace; air supply unit for supplying air into the combustion furnace, the air supply unit being disposed downstream of the fuel supply unit in the direction of flow of combustion air; concentration measuring unit for measuring the concentration of hydrogen sulfide of the combustion air by passing a measurement beam of light through the combustion air at a measurement position downstream of the fuel supply unit in the direction of flow of the combustion air; and control unit for controlling the amount of air supplied from the fuel supply unit based on a measurement result provided by the concentration measuring unit.

Abstract: Disclosed is a sieve including a mixing space, a sieving space, and a mixture transport space formed therein. A mesh for holding an active material in the mixing space is arranged in the undermost part of the mixing space. A gas containing a powder of a conductive material is supplied from a lower part of the mesh toward an upper part of the mesh to float the active material placed on the mesh and cause the collision between floating particles of the active material and particles of the conductive material, thereby producing particles of a mixture. Among the particles of the mixture, particles having particle sizes equal to or smaller than a desired particle size range rise up from the mixing space to the mixture transport space through the sieving space, while particles having relatively large particle sizes do not reach the mixture transport space.

Abstract: The combustion controller controls the fuel and air that are supplied to the combustion furnace for burning substances, and addresses the aforementioned object by including: fuel supply unit for supplying fuel and air into the combustion furnace; air supply unit for supplying air into the combustion furnace, the air supply unit being disposed downstream of the fuel supply unit in the direction of flow of combustion air; concentration measuring unit for measuring the concentration of hydrogen sulfide of the combustion air by passing a measurement beam of light through the combustion air at a measurement position downstream of the fuel supply unit in the direction of flow of the combustion air; and control unit for controlling the amount of air supplied from the fuel supply unit based on a measurement result provided by the concentration measuring unit.

Abstract: A corrosion sensor 11A is installed on a tower 102, which is a structure such as a wind power generator, a substrate 12 of the corrosion sensor 11A is made of a material 13A, 13B, . . . identical to a material of each constituent member (such as a generator) of, for example, a wind power generator that is the structure, a coating film 16A is used to cover a plurality of conductive units 15 provided on a surface of the substrate 12 of the corrosion sensor 11A via insulating units 14, respectively, with the coating film 16A, and the coating film 16A identical to the coating film 16A applied onto the constituent member (such as a generator) is applied entirely onto an outer surface 102a of the tower 102 of the structure.

Abstract: A corrosion detecting apparatus includes a first conductive part, an insulating film part made of a material same as that applied to an outdoor structure, which covers the first conductive part, and linear second conductive parts provided in plural with a predetermined gap there between on top of the film part, to detect a corrosion current generated due to degradation of the film part. The corrosion current is detected by a water film generated by a crack formed due to degradation of the film part.

Abstract: An object of the invention is to provide a sodium refining apparatus which has a simple constitution and does not deteriorate a solid electrolyte employed therein. The sodium refining apparatus of the invention, in which impurities contained in sodium are removed by a solid electrolyte having sodium ion conductivity, includes a bottom-closed casing made of a solid electrolyte and containing a small amount of highly pure sodium; an outer casing accommodating said bottom-closed casing and containing, outside said bottom-closed casing, impurity-containing sodium; a first electrode inserted in the impurity-containing sodium; a second electrode inserted in the highly pure sodium; and a power source for applying DC voltage to the electrodes; wherein the impurity-containing sodium and the highly pure sodium are in electrical contact with each other via the solid electrolyte.

Abstract: An object of the invention is to provide a sodium refining apparatus which has a simple constitution and does not deteriorate a solid electrolyte employed therein. The sodium refining apparatus of the invention, in which impurities contained in sodium are removed by a solid electrolyte having sodium ion conductivity, includes a bottom-closed casing made of a solid electrolyte and containing a small amount of highly pure sodium; an outer casing accommodating said bottom-closed casing and containing, outside said bottom-closed casing, impurity-containing sodium; a first electrode inserted in the impurity-containing sodium; a second electrode inserted in the highly pure sodium; and a power source for applying DC voltage to the electrodes; wherein the impurity-containing sodium and the highly pure sodium are in electrical contact with each other via the solid electrolyte.