Abstract: A steam turbine according to the present invention comprises: a shaft which rotates about the rotation axis thereof; a plurality of moving blades which extend in the radial direction from the outer peripheral surface of the shaft and which are arranged along the circumferential direction; a casing main body which covers the shaft and the moving blades from the outer peripheral side; a plurality of stationary blades which are arranged on the inner circumferential surface of the casing main body; and a substance supply unit which supplies, to the surfaces of the moving blades and/or the surfaces of the stationary blades, a film forming substance that is hydrophobic, wherein the substance supply unit has a storage unit, a supply passage which is formed inside the casing and through which the film forming substance flows, and discharge units which are formed inside the moving blades and/or the stationary blades and which guide the film forming substance to the surfaces.

Abstract: An adsorption structure provided in a flow path through which a fluid flows includes a plurality of cells that are structural units and are arranged side by side in the flow path, and the cells each include an inorganic adsorbent material that adsorbs a component included in the fluid. The cells are cuboids, the plurality of cells are arranged to be in a lattice form in a plane orthogonal to a flow path direction in which the flow path extends, and are arranged to be alternately stacked in the flow path direction. The cells each have a collision portion with which a flow of the fluid changes in a direction intersecting with the flow path direction in which the flow path extends. The collision portion is a surface intersecting with the flow path direction.

Abstract: A dehydrogenation processing method for a turbine blade of a steam turbine. The method includes a step of heating the turbine blade by suppling heating steam into a casing of the steam turbine after a steam turbine plant is stopped. The heating steam supplied to the casing has a temperature that is higher than steam passing through the turbine blade during operation of the steam turbine plant. The method further includes repeating the process of supplying the heating steam into the casing a multiple of times.

Abstract: A dehydrogenation processing method for a turbine blade of a steam turbine includes: a step of heating the turbine blade by supplying heating steam into a casing of the steam turbine when a steam turbine plant is started or stopped.