Gas turbine plant and gas turbine plant control method

Abstract

It starts up a gas turbine without using fossil fuels. [Solution] The gas turbine plant comprises a tank for storing liquid ammonia, a gas turbine having a combustor that generates combustion gas, and a supply line that supplies liquid ammonia from the tank to the combustor when the gas turbine is started. The supply line has a vaporization line that vaporizes the liquid ammonia from the tank using a vaporizer at startup and supplies it to the combustor.

Description

Technical Field

[0001] The present disclosure relates to a gas turbine plant and a method for controlling a gas turbine plant.

Background Art

[0002] As a highly efficient power generation facility, a gas turbine combined cycle power plant (hereinafter also referred to as "GTCC") is known. In addition to power generation by a gas turbine, this GTCC uses the exhaust heat thereof in a heat recovery steam generator (hereinafter also referred to as "HRSG") to generate steam, and also generates power with a steam turbine using the steam, thereby achieving high power generation efficiency. In such a GTCC, a configuration is known in which liquid ammonia is vaporized and heated by the heat of the steam generated in the HRSG, and the heated ammonia is supplied as fuel to the combustor of the gas turbine (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the plant described in Patent Document 1, since steam is generated in the HRSG, it is necessary to start the gas turbine using fossil fuel. From the perspective of decarbonization, a configuration for starting the gas turbine without using fossil fuel is required.

[0005] The present disclosure has been made in view of the above, and an object thereof is to provide a gas turbine plant and a method for controlling a gas turbine plant that can start the gas turbine without using fossil fuel.

Means for Solving the Problems

[0006] The gas turbine plant according to this disclosure comprises a tank for storing liquid ammonia, a gas turbine having a combustor for generating combustion gas, and a supply line for supplying liquid ammonia from the tank to the combustor when the gas turbine is started, wherein the supply line has a vaporization line for vaporizing the liquid ammonia from the tank by a vaporizer at startup and supplying it to the combustor.

[0007] The gas turbine plant control method according to this disclosure is a gas turbine plant control method for controlling the above-mentioned gas turbine plant, wherein, when the gas turbine is started, liquid ammonia from the tank is supplied to the combustor via the vaporization line in a vaporized state by the startup vaporizer. [Effects of the Invention]

[0008] According to this disclosure, a gas turbine can be started without using fossil fuels. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a schematic diagram of a gas turbine plant according to an embodiment. [Figure 2] Figure 2 shows an example of a vaporizer used during startup. [Figure 3] Figure 3 shows another example of a startup vaporizer. [Figure 4] Figure 4 shows another example of a startup vaporizer. [Figure 5] Figure 5 is a schematic diagram illustrating an example of fuel supply operation in the fuel supply unit. [Figure 6] Figure 6 is a schematic diagram illustrating an example of fuel supply operation in the fuel supply unit. [Figure 7] Figure 7 is a schematic diagram illustrating an example of fuel supply operation in the fuel supply unit. [Modes for carrying out the invention]

[0010] Hereinafter, embodiments of the gas turbine plant according to this disclosure will be described with reference to the drawings. However, this embodiment does not limit the present invention. Furthermore, the components in the following embodiments include those that are easily substituted or substantially identical to those that are easily substituted by those skilled in the art.

[0011] Figure 1 is a schematic diagram of the gas turbine plant 100 according to this embodiment. In this embodiment, the gas turbine plant 100 is described as a power plant, but it can be used for various applications that extract energy by burning fuel.

[0012] As shown in Figure 1, the gas turbine plant 100 according to this embodiment includes a gas turbine 11, a heat recovery boiler 13 that generates steam by exchanging heat energy from the combustion exhaust gas 12 from the gas turbine 11 in a heat exchange unit (not shown), a steam turbine 16 driven by the steam generated in the heat recovery boiler 13, and a condenser 30 that generates water from the steam discharged from the steam turbine 16. The gas turbine plant 100 also has a fuel supply unit 40 that supplies fuel to the combustor 11B of the gas turbine 11. In addition to generating electricity with the gas turbine 11, the gas turbine plant 100 constitutes a gas turbine combined cycle (GTCC) that also generates electricity with the steam turbine 16 by utilizing the waste heat in the heat recovery boiler 13.

[0013] The gas turbine 11 comprises an air compressor 11A, a combustor 11B, and a turbine section 11C. The air compressor 11A has alternating stages of rotor blades and stator blades, and compresses air A introduced from the outside to produce high-temperature, high-pressure compressed air which is then introduced to the combustor 11B. The combustor 11B injects fuel F into the high-temperature, high-pressure compressed air introduced from the air compressor 11A and burns it to generate high-temperature combustion gas. In this embodiment, fuel F is ammonia. Fuel F is supplied from a fuel supply unit 40. The turbine section 11C has alternating stages of rotor blades and stator blades, and the combustion gas generated in the combustor 11B passes through it. As the combustion gas passes through the turbine section 11C, the rotor blades are rotated by the energy of the combustion gas. The turbine section 11C and the air compressor 11A are connected by a rotating shaft. High-temperature, high-pressure combustion gas is supplied from the combustor 11B to the turbine section 11C, where the thermal energy of the high-temperature, high-pressure combustion gas is converted into rotational energy. This rotational energy drives the coaxially positioned air compressor 11A. The gas turbine 11 also has a gas turbine generator G1 connected to its rotating shaft, and the rotational energy drives the gas turbine generator G1 to generate electricity. The combustion exhaust gas 12 that has driven the turbine section 11C is discharged into the waste heat recovery boiler 13. The waste heat recovery boiler 13 recovers the thermal energy of the combustion exhaust gas 12.

[0014] The waste heat recovery boiler 13 has a heat exchange section 13A. The heat exchange section 13A of the waste heat recovery boiler 13 is connected to the steam turbine 16 and the rated vaporizer 44 and heater 45, which will be described later. The condensate produced in the steam turbine 16, the rated vaporizer 44 and heater 45 is supplied to the condenser 30 via the condensate line L2. The condenser 30 is connected to the heat exchange section 13A and supplies condensate to the heat exchange section 13A.

[0015] The fuel supply unit 40 includes a tank 41 and a supply line L1. The tank 41 stores liquid ammonia. The supply line L1 includes a vaporization line L11, a spray line L12, and a rated-time line L13.

[0016] The vaporization line L11 vaporizes the liquid ammonia from the tank 41 by the startup vaporizer 43 and supplies it to the combustor 11B. A vaporization control valve V1 is provided in the vaporization line L11. The vaporization control valve V1 adjusts the flow rate of the liquid ammonia flowing through the vaporization line L11. The vaporization control valve V1 is controlled by the valve control unit 60.

[0017] The spray line L12 sprays and supplies the liquid ammonia from the tank 41 to the combustor 11B in a liquid state. A spray control valve V2 is provided in the spray line L12. The spray control valve V2 adjusts the flow rate of the liquid ammonia flowing through the spray line L12. The spray control valve V2 is controlled by the valve control unit 60.

[0018] The rated operation line L13 supplies the liquid ammonia from the tank 41 to the combustor 11B during the rated operation of the gas turbine 11. The rated operation line L13 vaporizes the liquid ammonia from the tank 41 in the rated vaporizer 44, heats the ammonia vaporized in the rated vaporizer 44 with the heater 45, and supplies it to the combustor 11B. The rated vaporizer 44 vaporizes the liquid ammonia by heat exchange with the steam generated in the exhaust heat recovery boiler 13. The heater 45 heats the vaporized ammonia by heat exchange with the steam generated in the exhaust heat recovery boiler 13. A rated control valve V3 is provided in the rated operation line L13. The rated control valve V3 adjusts the flow rate of the liquid ammonia flowing through the rated operation line L13. The rated control valve V3 is controlled by the valve control unit 60.

[0019] Figure 2 is a diagram showing an example of a startup vaporizer. The startup vaporizer 43A shown in Figure 2 includes an outer cylinder 51, an inner cylinder 52, a combustion supply pipe 53, a vaporization supply pipe 54, a manifold 55, an oxidant supply unit 56, and a discharge unit 57. The startup vaporizer 43A has a firing mechanism (not shown).

[0020] The outer cylinder 51 and the inner cylinder 52 are formed using a metal such as SUS, for example. The outer cylinder 51 and the inner cylinder 52 are, for example, cylindrical and arranged so that the central axis AX is common. The outer cylinder 51 and the inner cylinder 52 form a double-pipe structure. The outer cylinder 51 and the inner cylinder 52 are arranged with a gap in the radial direction. An oxidant such as oxygen or air flows through the gap. Also, due to the provision of the gap, the inner cylinder 52 can be cooled. The outer cylinder 51 has a lid portion 51a on one end side in the axial direction of the central axis AX (the left side in FIG. 2). The inner cylinder 52 has a tapered portion 52a on one end side in the axial direction of the central axis AX (the left side in FIG. 2).

[0021] The combustion supply pipe 53 penetrates the lid portion 51a of the outer cylinder 51 and is inserted into the interior of the inner cylinder 52. The combustion supply pipe 53 supplies liquid ammonia into the interior of the inner cylinder 52. The combustion supply pipe 53 is arranged at the central portion in the radial direction of the outer cylinder 51 and the inner cylinder 52, that is, at a position overlapping the central axis AX. The tip of the combustion supply pipe 53 (the end portion on the right side in FIG. 2) is a nozzle 53a that ejects liquid ammonia.

[0022] The vaporization supply pipe 54 penetrates the lid portion 51a of the outer cylinder 51 and is connected to the manifold 55. The vaporization supply pipe 54 supplies liquid ammonia to the manifold 55. The vaporization supply pipe 54 is arranged at a position corresponding to the tapered portion 52a of the inner cylinder 52 in the radial direction.

[0023] The manifold 55 is arranged around the central axis AX so as to surround the outer surface of the tapered portion 52a of the inner cylinder 52 over one circumference. The manifold 55 circulates the liquid ammonia supplied from the vaporization supply pipe 54 of the tapered portion 52a along the circumferential direction. The manifold 55 has nozzles 55a at a plurality of locations around the central axis AX. The nozzle 55a protrudes from the manifold 55 toward the tapered portion 52a side, penetrates the tapered portion 52a, and is connected to the interior of the inner cylinder 52. The nozzle 55a is arranged along the side surface 52b of the inner cylinder 52. The nozzle 55a supplies liquid ammonia into the inner cylinder 52 along the side surface 52b.

[0024] The oxidizer supply unit 56 is positioned between the inner circumference of the tapered portion 52a of the inner cylinder 52 and the outer circumference of the combustion supply pipe 53. Examples of oxidizers include oxygen and air. The oxidizer supply unit 56 supplies the oxidizer flowing through the gap between the outer cylinder 51 and the inner cylinder 52 into the interior of the inner cylinder 52.

[0025] The discharge section 57 discharges the ammonia that has vaporized inside the inner cylinder 52.

[0026] When using the vaporizer 43A at startup, first, liquid ammonia is supplied to the inside of the inner cylinder 52 from the nozzle 53a via the combustion supply pipe 53, and oxidizer is supplied to the inside of the inner cylinder 52 from the oxidizer supply unit 56. Then, the mixture of liquid ammonia and oxidizer is ignited by an ignition mechanism (not shown). As a result, a combustion region R1 is formed inside the inner cylinder 52 where the liquid ammonia burns. The combustion region R1 is formed in the vicinity of the nozzle 53a and the oxidizer supply unit 56 inside the inner cylinder 52.

[0027] After the combustion region R1 is formed, liquid ammonia is supplied to the manifold 55 from the vaporization supply pipe 54. The liquid ammonia supplied to the manifold 55 flows circumferentially within the manifold 55 and is supplied to the inside of the inner cylinder 52 from each nozzle 55a along the side surface 52b. This liquid ammonia moves along the side surface 52b in the axial direction of the central axis AX (right side in Figure 2), cooling the inner cylinder 52, and is mostly vaporized by the heat generated in the combustion region R1. In this way, a vaporization region R2 is formed in the region along the side surface 52b of the inner cylinder 52. The vaporized ammonia is discharged from the discharge section 57 to the vaporization line L11 and supplied to the combustor 11B.

[0028] Furthermore, the heat generated in the combustion region R1 causes some of the liquid ammonia to decompose and produce hydrogen. The gas discharged from the discharge section 57 may contain this hydrogen. In this embodiment, by adjusting the temperature in the discharge section 57 to 1200°C or higher, sufficiently heated fuel F (ammonia and hydrogen) can be supplied to the combustor 11B.

[0029] Figure 3 shows another example of a startup vaporizer. The startup vaporizer 43B shown in Figure 3 differs from the startup vaporizer 43A shown in Figure 2 in that it does not have a manifold 55. In addition, a vaporization supply pipe 54 is provided that penetrates the side surface 51b of the outer cylinder 51 and wraps around the side surface 52b of the inner cylinder 52, and is supplied to the inside of the inner cylinder 52 from multiple points on the side surface 52b of the inner cylinder 52 via nozzles 54a. The other configurations are the same as those of the startup vaporizer 43A. Thus, liquid ammonia for vaporization may be supplied from the side surface 52b of the inner cylinder 52.

[0030] Figure 4 shows another example of a startup vaporizer. The startup vaporizer 43C shown in Figure 4 may not have a double-pipe structure, but rather a configuration in which the first cylindrical section 58 and the second cylindrical section 59 are connected in series. In this case, by supplying liquid ammonia for combustion and an oxidizer to the first cylindrical section 58 and igniting them by an ignition mechanism (not shown), a combustion region R1 can be formed inside the first cylindrical section 58. Furthermore, by supplying liquid ammonia to the second cylindrical section 59, the liquid ammonia vaporizes due to the heat of the combustion region R1. That is, a vaporization region R2 can be formed inside the second cylindrical section 59.

[0031] Next, an example of the operation when starting the gas turbine 11 in the gas turbine plant 100 configured as described above will be explained. In the following explanation, the operation of supplying fuel F to the combustor 11B of the gas turbine 11 will be described. Figures 5 to 7 are schematic diagrams showing an example of the fuel supply operation in the fuel supply unit 40.

[0032] At the start-up of the gas turbine 11, the valve control unit 60 controls the vaporization control valve V1 and the spray control valve V2, as shown in Figure 5, so that the flow rate of liquid ammonia to the vaporization line L11 is greater than the flow rate to the spray line L12. The liquid ammonia supplied to the vaporization line L11 is vaporized by the start-up vaporizer 43 and supplied to the combustor 11B containing a small amount of hydrogen. By supplying gaseous ammonia to the combustor 11B in this way, ignition in the combustor 11B can be made easier. The presence of a small amount of hydrogen in the ammonia increases the combustion efficiency in the combustor 11B.

[0033] After the gas turbine 11 starts up, the valve control unit 60 controls the spray control valve V2 to gradually increase the flow rate of liquid ammonia to the spray line L12, as shown in Figure 6. The liquid ammonia supplied to the spray line L12 is sprayed in liquid form and supplied to the combustor 11B. Since the liquid ammonia is supplied while it is ignited and burning by gaseous ammonia, it can burn properly. After the gas turbine 11 starts up, the valve control unit 60 may either control the vaporization control valve V1 to remain unchanged, or it may control the vaporization control valve V1 to increase or decrease the flow rate of liquid ammonia flowing through the vaporization line L11 according to the flow rate of liquid ammonia flowing through the spray line L12.

[0034] When the gas turbine 11 is operating at its rated capacity, steam is being generated in the heat recovery boiler 13. Therefore, when the gas turbine 11 is operating at its rated capacity, the valve control unit 60 controls the rated control valve V3 to increase the flow rate of liquid ammonia flowing through the rated line L13, as shown in Figure 7. The liquid ammonia supplied to the rated line L13 is vaporized by the rated vaporizer 44 and heated by the heater 45 before being supplied to the combustor 11B. When increasing the flow rate of liquid ammonia flowing through the rated line L13, the valve control unit 60 controls the vaporization control valve V1 and the spray control valve V2 to gradually decrease the flow rates of liquid ammonia flowing through the vaporization line L11 and the spray line L12. This control allows the fuel F supplied to the combustor 11B to be switched to ammonia vaporized and heated using the heat from the heat recovery boiler 13, thereby improving energy efficiency.

[0035] As described above, the gas turbine plant according to the first aspect of this disclosure comprises a tank 41 for storing liquid ammonia, a gas turbine 11 having a combustor 11B for generating combustion gas, and a supply line L1 for supplying liquid ammonia from the tank 41 to the combustor 11B when the gas turbine 11 is started, the supply line L1 having a vaporization line L11 that vaporizes the liquid ammonia from the tank 41 by a vaporizer 43 at startup and supplies it to the combustor 11B.

[0036] With this configuration, by supplying gaseous ammonia to the combustor 11B when starting the gas turbine 11, ignition in the combustor 11B can be facilitated. Therefore, the gas turbine 11 can be started without using fossil fuels.

[0037] In the gas turbine plant according to a second aspect of the present disclosure, in the first aspect, the supply line L1 has a spray line L12 that sprays and supplies liquid ammonia from the tank 41 to the combustor 11B.

[0038] With this configuration, liquid ammonia is supplied while the gaseous ammonia is igniting and burning, allowing for proper combustion.

[0039] In a third aspect of the present disclosure, the gas turbine plant, in the first or second aspect, has a supply line L1 which includes a vaporization control valve V1 and a spray control valve V2 that control the flow rate of liquid ammonia flowing to the vaporization line L11 and the spray line L12.

[0040] This configuration allows for appropriate control of the flow rate of liquid ammonia in the vaporization line L11 and the spray line L12.

[0041] In the gas turbine plant according to the fourth aspect of this disclosure, in the third aspect, the vaporization control valve V1 and the spray control valve V2 increase the flow rate of liquid ammonia to the vaporization line L11 above the flow rate to the spray line L12 at the start of startup of the gas turbine 11, and gradually increase the flow rate of liquid ammonia to the spray line L12 thereafter.

[0042] With this configuration, at the start-up of the gas turbine 11, gaseous ammonia can be appropriately supplied to the combustor 11B, and then liquid ammonia can be supplied to the combustor 11B while it is ignited and burning by the gaseous ammonia. This reduces the energy consumed by the vaporizer 43 during startup.

[0043] In any of the first to fourth embodiments of the present disclosure, the gas turbine plant has a supply line L13 which supplies liquid ammonia from a tank 41 to a combustor 11B when the gas turbine 11 is operating at its rated capacity. The supply line L13 vaporizes the liquid ammonia from the tank 41 in a rated vaporizer 44, heats the ammonia vaporized in the rated vaporizer 44 in a heater 45, and supplies it to the combustor 11B.

[0044] With this configuration, during rated operation of the gas turbine 11, ammonia that has been vaporized in the rated vaporizer 44 and heated in the heater 45 is supplied, so that combustion can be carried out properly in the combustor 11B.

[0045] A gas turbine plant according to a sixth aspect of this disclosure further comprises, in a fifth aspect, a waste heat recovery boiler 13 that exchanges heat with exhaust gas from a gas turbine 11 to generate steam, and a rated vaporizer 44 and heater 45 vaporize liquid ammonia and heat the ammonia by heat exchange with the steam generated in the waste heat recovery boiler 13.

[0046] With this configuration, when the gas turbine 11 is operating at its rated capacity, ammonia that has been vaporized and heated by heat exchange with the steam generated in the waste heat recovery boiler 13 is supplied to the combustor 11B, thereby improving energy efficiency.

[0047] In any of the first to fourth embodiments of the present disclosure, the gas turbine plant includes an inner cylinder 52 capable of forming a combustion region R1 for burning liquid ammonia to generate heat and a vaporization region R2 for vaporizing liquid ammonia with the heat generated in the combustion region R1, and nozzles 53a and 55a for separately supplying liquid ammonia to the combustion region R1 and vaporization region R2 of the inner cylinder 52, respectively.

[0048] With this configuration, liquid ammonia can be properly vaporized in the vaporizer 43 during startup.

[0049] In the gas turbine plant according to the eighth aspect of the present disclosure, in the seventh aspect, nozzle 53a supplies liquid ammonia from one end of the inner cylinder 52 in the longitudinal direction and from the radial center, and nozzle 55a supplies liquid ammonia along the side surface 52b of the inner cylinder 52.

[0050] With this configuration, liquid ammonia is supplied in a way that avoids the combustion region R1 formed in the center of the inner cylinder 52, so that it can be properly vaporized while cooling the inner cylinder 52.

[0051] A gas turbine plant control method according to the ninth aspect of this disclosure is a gas turbine plant control method for controlling any of the first to eighth aspects of this disclosure, wherein when the gas turbine 11 is started, liquid ammonia from the tank 41 is supplied to the combustor 11B via the vaporization line L11 in a vaporized state by the startup vaporizer 43.

[0052] With this configuration, by supplying gaseous ammonia to the combustor 11B when starting the gas turbine 11, ignition in the combustor 11B can be facilitated. Therefore, the gas turbine 11 can be started without using fossil fuels.

[0053] A gas turbine plant control method according to a tenth aspect of the present disclosure, in a ninth aspect, in a gas turbine plant, the supply line L1 has a spray line L12 that sprays liquid ammonia from a tank 41 to a combustor 11B, and at the start of startup of the gas turbine 11, the flow rate of liquid ammonia to the vaporization line L11 is greater than the flow rate to the spray line L12, and the flow rate of liquid ammonia to the spray line L12 is gradually increased from the start of startup.

[0054] With this configuration, at the start-up of the gas turbine 11, gaseous ammonia can be appropriately supplied to the combustor 11B, and then liquid ammonia can be supplied to the combustor 11B while it is ignited and burning by the gaseous ammonia. This reduces the energy consumed by the vaporizer 43 during startup.

[0055] The technical scope of the present invention is not limited to the embodiments described above, and modifications can be made as appropriate without departing from the spirit of the invention. [Explanation of Symbols]

[0056] 11 Gas Turbine 11A Air Compressor 11B Combustor 11C Turbine Section 12 Combustion exhaust gas 13. Waste heat recovery boiler 13A Heat exchanger 16 Steam Turbine 30 Condenser 40 Fuel supply section 41 tanks 43, 43A, 43B, 43C Startup vaporizer 44. Rated vaporizer, rated vaporizer 45 Heater 51 Outer cylinder 51a Lid 51b,52b side 52 Inner cylinder 52a Tapered section 53 Combustion supply pipe 53a, 54a, 55a nozzles 54 Vaporization supply pipe 55 Manifold 56 Oxidizing agent supply unit 57 Discharge section 58 First cylinder part 59 Second cylinder part 60 Valve control unit 100 Gas Turbine Plant A air AX center axis F fuel G1 Gas Turbine Generator L1 supply line L2 Condensate Line L11 Vaporization Line L12 spray line L13 Rated Line R1 Combustion Region R2 vaporization region V1 Vaporization control valve V2 spray control valve V3 Rated Control Valve

Claims

1. A tank for storing liquid ammonia, A gas turbine having a combustor that generates combustion gases, A supply line that supplies liquid ammonia from the tank to the combustor when the gas turbine is started up. Equipped with, The supply line includes a vaporization line that vaporizes the liquid ammonia from the tank using a vaporizer at startup and supplies it to the combustor. Gas turbine plant.

2. The supply line includes a spray line that sprays and supplies liquid ammonia from the tank to the combustor. The gas turbine plant according to claim 1.

3. The supply line has a control valve that controls the flow rate of liquid ammonia flowing through the vaporization line and the spray line. The gas turbine plant according to claim 2.

4. The control valve increases the flow rate of liquid ammonia to the vaporization line compared to the flow rate to the spray line at the start of the gas turbine startup, and gradually increases the flow rate of liquid ammonia to the spray line after the start of startup. The gas turbine plant according to claim 3.

5. The supply line includes a rated-time line that supplies liquid ammonia from the tank to the combustor during the rated operation of the gas turbine. The rated-time line vaporizes liquid ammonia from the tank using a rated-time vaporizer, heats the vaporized ammonia in a heater, and supplies it to the combustor. The gas turbine plant according to claim 1.

6. The system further comprises a heat recovery boiler that exchanges heat with the exhaust gas from the aforementioned gas turbine to generate steam, The rated vaporizer and heater perform vaporization of liquid ammonia and heating of ammonia by heat exchange with the steam generated in the waste heat recovery boiler. The gas turbine plant according to claim 5.

7. The aforementioned carburetor at startup is A cylindrical portion capable of forming a combustion region in which liquid ammonia is burned to generate heat, and a vaporization region in which the liquid ammonia is vaporized by the heat generated in the combustion region, The cylindrical portion comprises a combustion supply unit and a vaporization supply unit, which separately supply liquid ammonia to the combustion region and the vaporization region, respectively. The gas turbine plant according to claim 1.

8. The combustion supply unit supplies liquid ammonia from one end of the cylindrical portion in the longitudinal direction and from the central part in the radial direction. The vaporization supply unit supplies liquid ammonia along the side surface of the cylindrical portion. The gas turbine plant according to claim 7.

9. A gas turbine plant control method for controlling the gas turbine plant described in claim 1, When the gas turbine is started, liquid ammonia from the tank is supplied to the combustor via the vaporization line, in a vaporized state by the startup vaporizer. Gas turbine plant control method.

10. In the gas turbine plant, the supply line includes a spray line that sprays and supplies liquid ammonia from the tank to the combustor. At the start of the gas turbine, the flow rate of liquid ammonia to the vaporization line is set to be greater than the flow rate to the spray line, and the flow rate of liquid ammonia to the spray line is gradually increased from the start of the gas turbine. The gas turbine plant control method according to claim 9.

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