Abstract: A gas turbine plant includes a gas turbine, an exhaust heat recovery boiler, and a water supply system that is configured to supply water to the exhaust heat recovery boiler. The exhaust heat recovery boiler has an evaporator configured to use an exhaust gas to heat water, thereby generating steam, and a reheater that is configured to heat steam with the exhaust gas introduced from the evaporator. The water supply system has a water supply line that is configured to supply water from a water supply source to the exhaust heat recovery boiler, and a supplied water temperature regulator that is configured to regulate a temperature of supplied water, which is the water in the water supply line.

Abstract: A steam turbine includes an outer casing (19) that is provided with a first steam outlet port (54), through which exhaust steam flowing through the entire length of a flow path (21) defined between an inner casing main body (45) and an outer casing main body (51) in a direction along an axis (O1) is discharged to the outside of the outer casing (19), and a second steam outlet port (55), which is provided in the outer casing main body (51) and through which the exhaust steam passing through a portion of the flow path (21) or the exhaust steam not passing through the flow path (21) is discharged to the outside of the outer casing (19); a first valve (28) that adjusts opening of the first steam outlet port (54); and a second valve (32) that adjusts opening of the second steam outlet port (55).

Abstract: A gas turbine plant is provided with a gas turbine, a heating device, a decomposition gas line, and a decomposition gas compressor. The heating device heats ammonia and thermally decomposes the ammonia to convert the ammonia into decomposition gas including hydrogen gas and nitrogen gas. The decomposition gas line sends the decomposition gas PG from the heating device to the gas turbine. The decomposition gas compressor increases the pressure of the decomposition gas to a pressure equal to or higher than a feed pressure at which the decomposition gas is allowed to be fed to the gas turbine.

Abstract: Provided is a plant that includes: a boiler; a device connected to the boiler; a water supply source that is configured to pool water; a water supply line that supplies water from the water supply source to the boiler; a cooler that transfers heat from a medium to be cooled to supply-water, which is the water flowing along the water supply line; a thermometer that determines a temperature of the medium to be cooled or the supply-water; and a temperature regulator that is configured to regulate the temperature of the medium to be cooled on the basis of the temperature determined by the thermometer.

Abstract: A carbon dioxide recovery system for collecting carbon dioxide from an exhaust gas generated in a facility including a combustion device includes: a first exhaust gas passage through which the exhaust gas containing carbon dioxide flows; a fuel cell including an anode, a cathode disposed on the first exhaust gas passage so that the exhaust gas from the first exhaust gas passage is supplied to the cathode, and an electrolyte transferring, from the cathode to the anode, a carbonate ion derived from carbon dioxide contained in the exhaust gas from the first exhaust gas passage; and a second exhaust gas passage diverging from the first exhaust gas passage upstream of the cathode so as to bypass the cathode. A part of the exhaust gas is introduced to the second exhaust gas passage.

Abstract: A gas turbine plant includes a connection line configured to connect an outlet of a compressor high-pressure stage and an inlet of a turbine via a combustor, a bypass line configured to cause some or all of air compressed at a compressor low-pressure stage to bypass the compressor high-pressure stage and to be supplied to the connection line, and an adjustment device configured to adjust a flow rate of the air flowing through the bypass line. A plurality of types of fluid are supplied to the connection line in addition to the air compressed by the compressor, and during operation of the gas turbine plant, supply of at least one type of fluid of the plurality of types of fluid to the connection line is stopped according to an operating state of the gas turbine plant.

Abstract: A non-positive displacement type pressurizing device for pressurizing a fluid includes a rotor including a rotary blade row including a plurality of rotary blades provided at intervals in a circumferential direction; a casing that accommodates the rotor; a stationary blade row supported by the casing and including a plurality of stationary blades provided at intervals in the circumferential direction; and a plurality of heat exchanging units for cooling the fluid, wherein the heat exchanging units are configured to divide a flow path formed between stationary blades, of the plurality of stationary blades, adjacent to one another in the circumferential direction in a height direction of the stationary blades.

Abstract: Provided is a plant that includes: a boiler (30); a device connected to the boiler (30); a water supply source (41) that is configured to pool water; a water supply line (44) that supplies water from the water supply source (41) to the boiler (30); a cooler (50, 60g, 60s, 70g, 70s, 80) that transfers heat from a medium to be cooled to supply-water (W), which is the water flowing along the water supply line (44); a thermometer (59, 69, 79, 89) that determines a temperature of the medium to be cooled or the supply-water; and a temperature regulator (53, 62, 72, 82) that is configured to regulate the temperature of the medium to be cooled on the basis of the temperature determined by the thermometer (59, 69, 79, 89).

Abstract: A steam turbine includes an inner casing which has an inner casing body in which a first main flow path to which steam is to be supplied from an inner introduction port is defined, an outer casing which has an outer casing body which defines a second main flow path between the inner casing body and the outer casing body and an upper discharge port and a lower discharge port which are in the outer casing body and through which exhaust steam is to be discharged, an upper valve and a lower valve configured to adjust a flow rate of the exhaust steam which has been discharged, and a control unit which can independently control the upper valve and the lower valve.

Abstract: A power generation plant includes a plant device, an AC motor for starting the plant device, at least one DC power source, and a first inverter disposed between the at least one DC power source and the AC motor and between the at least one DC power source and an electrical power grid. The first inverter is configured to convert DC power from the at least one DC power source to AC power and is capable of selectively supplying the AC power to the AC motor or the electrical power grid.

Abstract: A plant includes a fuel supply line for supplying high-pressure fuel gas; and at least one expander disposed in the fuel supply line and configured to extract power from the high-pressure fuel gas by expanding the high-pressure fuel gas.

Abstract: An intake air cooling device includes a water supply line and a heat pump device. The water supply line is configured to send water to a waste heat recovery boiler which is configured to generate steam using heat of an exhaust gas from a gas turbine. The heat pump device is configured to transfer heat of air suctioned by the gas turbine to water flowing through the water supply line and thereby cool the air while heating the water.

Abstract: A boiler including one or more evaporators, an economizer, and a low-temperature heat exchanger. The economizer is located on a downstream side of the most downstream evaporator which is an evaporator at the most downstream side among the one or more evaporators. The low-temperature heat exchanger is located on the downstream side of the economizer, has an inlet for receiving water from the outside, and is configured to heat the water introduced from the inlet and sent to the economizer with the combustion gas.

Abstract: The present invention provides a gas turbine plant that includes a gas turbine, an exhaust heat recovery boiler, and a water supply system that is configured to supply water to the exhaust heat recovery boiler. The exhaust heat recovery boiler has an evaporator that uses an exhaust gas to heat water, thereby generating steam, and a reheater that is configured to heat steam from outside with the exhaust gas passing through the evaporator. The water supply system has a water supply line that is configured to supply water from a water supply source to the exhaust heat recovery boiler, and a supplied water temperature regulator that is configured to regulate the temperature of the supplied water, which is the water flowing along the water supply line.

Abstract: A gas turbine includes: a compressor configured to compress air; a combustor configured to combust fuel in the air compressed by the compressor so as to generate combustion gas; and a turbine configured to be driven using the combustion gas. Air coolers are configured to bleed the air from a plurality of places having different pressures in the compressor and cool the air bled from the respective places so as to generate cooling air. A waste heat recovery device is configured to recover waste heat from at least two of the air coolers.

Abstract: A gas turbine exhaust heat recovery plant includes a plurality of gas turbine exhaust heat recovery devices that have a gas turbine and an exhaust heat recovery boiler for generating steam by recovering exhaust heat of the gas turbine, a steam-utilizing facility that utilizes the steam generated by the exhaust heat recovery boiler, and an inter-device heat medium supply unit capable of supplying a portion of water heated or a portion of the steam generated by at least one of the gas turbine exhaust heat recovery devices out of the plurality of gas turbine exhaust heat recovery devices, to the other gas turbine exhaust heat recovery device.

Abstract: A steam turbine system (200) includes a steam turbine (60) in which a main flow path (C) through which a main steam flows is formed, and a saturated steam generation portion (210) that is configured to generate a saturated steam. The saturated steam generation portion (210) is configured to feed the saturated steam into a wet region (C1) in which the main steam in the main flow path (C) is in a wet state via a hollow portion formed inside a stator vane (650) of the steam turbine (60). The stator vane (650) has a plurality of supply ports that are formed such that the hollow portion is configured to communicate with the main flow path (C), and a discharge amount of the saturated steam increases from an inner circumferential side toward an outer circumferential side in a blade height direction.

Abstract: A steam turbine (1) includes an inner casing (3) which has an inner casing body (15) in which a first main flow path (11) to which steam is supplied from an inner introduction port (16) is formed, an outer casing (5) which has an outer casing body (20) which forms a second main flow path (120) between the inner casing body (15) and the outer casing body (20) and an upper discharge port (23) and a lower discharge port (24) which are provided in the outer casing body (20) and through which exhaust steam (S2) is discharged, an upper valve (7) and a lower valve (8) which adjust a flow rate of the discharged exhaust steam (S2), and a control unit (9) which can independently control the upper valve (7) and the lower valve (8).

Abstract: A gas turbine plant is provided with a gas turbine, a heating device, a decomposition gas line, and a decomposition gas compressor. The heating device heats ammonia and thermally decomposes the ammonia to convert the ammonia into decomposition gas including hydrogen gas and nitrogen gas. The decomposition gas line sends the decomposition gas PG from the heating device to the gas turbine. The decomposition gas compressor increases the pressure of the decomposition gas to a pressure equal to or higher than a feed pressure at which the decomposition gas is allowed to be fed to the gas turbine.

Abstract: A waste heat recovery device includes: a low-boiling-point medium Rankine cycle in which a low-boiling-point medium circulates while the low-boiling-point medium is repeatedly condensed and evaporated; a heated water line that guides liquid water, which is heated here, to the low-boiling-point medium Rankine cycle from a waste heat recovery boiler; and a water recovery line that returns the water, which has passed through the low-boiling-point medium Rankine cycle, to the waste heat recovery boiler. The low-boiling-point medium Rankine cycle includes a heater that heats the low-boiling-point medium by exchanging heat between the low-boiling-point medium, which is a liquid, and liquid water, which has passed through the heated water line.