Three-shaft gas turbine power system driven by hydrogen production from ammonia

Abstract

The utility model discloses a three-shaft gas turbine power system driven by ammonia hydrogen production. A liquid ammonia pump is sequentially connected with a liquid ammonia channel of a first intercooler, an ammonia gas channel I of a second intercooler, an ammonia gas channel II of a heat exchanger, a reaction channel of an ammonia decomposition reactor and a combustor through pipelines; the first air supercharging device inputs supercharged air into a compressed air channel I of the first intercooler, the compressed air channel I is connected with the second air supercharging device, and compressed air is input into a compressed air channel II of the second intercooler for heat exchange, then is compressed by a third air compressor and then is input into the combustor to be mixed with product gas for combustion; a flue gas outlet of the combustor is connected with a third turbine, the third turbine is connected with a flue gas channel I of the decomposition reactor, and the flue gas channel I is sequentially connected with a second air supercharging device and a first air supercharging device and conveys flue gas to a flue gas channel II of the heat exchanger. The system is simple, the gas turbine can generate larger compression ratio and higher combustion temperature, and the comprehensive energy efficiency of ammonia energy reaches 80-85%.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of generator or engine, concretely relates to a three-shaft gas turbine power system driven by ammonia hydrogen. BACKGROUND

[0002] Hydrogen energy has the characteristics of rich source, high energy density, green and low carbon, etc., and is the most potential clean energy. Under the background of the "double carbon" proposed by the country, due to the rich hydrogen in ammonia, the utilization of ammonia fuel is highly valued. When ammonia hydrogen combustion generates power, tail gas containing nitrogen oxides is generated at the same time, and direct emission will inevitably cause a large amount of heat energy waste, and at the same time, pollution to the environment, the current system for hydrogen production by ammonia energy is complex, and the comprehensive energy efficiency is low.

[0003] At present, the power generation or mobile equipment taking gas turbine as the power source is developing and applying rapidly, generally, the thermal efficiency of gas turbine is often between 30-40%, considering the waste heat utilization of gas turbine, heating the steam turbine is a way to improve the overall energy efficiency, due to the different working medium of the two, the coupling of the two is complex, resulting in large size. UTILITARY MODEL CONTENT

[0004] In order to solve the above-mentioned technical problems, overcome the technical problems of low comprehensive energy efficiency of ammonia energy in the prior art, therefore, the utility model provides a three-shaft gas turbine power system driven by ammonia hydrogen, adopts single ammonia fuel and working medium, simplifies the system complexity, the gas turbine generates greater compression ratio and higher combustion temperature, has greater power density and power output.

[0005] The technical scheme adopted is as follows:

[0006] A three-shaft gas turbine power system driven by ammonia hydrogen, characterized in that the system comprises a liquid ammonia tank, a liquid ammonia pump, a first intercooler, a second intercooler, a heat exchanger, an ammonia decomposition reactor, a combustor, a first air supercharging device, a second air supercharging device, a gas turbine power generation device and a tail gas treatment unit; the gas turbine power generation device comprises a generator and coaxially arranged third compressor and third turbine, and the generator and the third turbine are coaxially connected in drive;

[0007] The liquid ammonia pump inlet is connected with the outlet of the liquid ammonia tank, the liquid ammonia pump outlet is connected with the liquid ammonia channel inlet of the first intercooler through a pipeline, the liquid ammonia channel outlet is connected with the ammonia gas channel I inlet of the second intercooler through a pipeline, the outlet of the ammonia gas channel I is connected with the ammonia gas channel II inlet of the heat exchanger through a pipeline, the ammonia gas channel II outlet is connected with the reaction channel inlet of the ammonia decomposition reactor through a pipeline, and the reaction channel outlet is connected with the combustor through a pipeline;

[0008] The first air pressurizing device sucks ambient air and inputs the pressurized air to the compressed gas passage I inlet of the first intercooler, the compressed gas passage I outlet is connected with the second air pressurizing device, the second air pressurizing device inputs the pressurized air to the compressed gas passage II inlet of the second intercooler, the air discharged from the compressed gas passage II outlet is compressed by the third compressor and then input to the combustor to mix with the product gas discharged from the reaction passage outlet;

[0009] The flue gas outlet of the combustor is connected with the third turbine inlet through a pipeline, the third turbine outlet is connected with the flue gas passage I inlet of the ammonia decomposition reactor through a pipeline, the flue gas passage I outlet is sequentially connected with the second air pressurizing device and the first air pressurizing device through a pipeline, and the flue gas is delivered to the flue gas passage II of the heat exchanger, and the flue gas passage II outlet is connected with the tail gas treatment unit through a pipeline.

[0010] Preferably, the first air pressurizing device comprises a first compressor and a first turbine arranged coaxially, and the second air pressurizing device comprises a second compressor and a second turbine arranged coaxially; the outlet of the first compressor is connected with the compressed gas passage I inlet of the first intercooler through a pipeline; the inlet of the second compressor is connected with the compressed gas passage I outlet of the first intercooler through a pipeline, and the outlet of the second compressor is connected with the compressed gas passage II inlet of the second intercooler through a pipeline.

[0011] Further preferably, the rotation shaft I of the first compressor and the first turbine, the rotation shaft II of the second compressor and the second turbine, and the rotation shaft III of the third compressor and the third turbine are coaxially connected in series to form a three-shaft turbine generator together with the generator.

[0012] Or preferably, the rotation shaft I of the first compressor and the first turbine, the rotation shaft II of the second compressor and the second turbine, and the rotation shaft III of the third compressor and the third turbine are connected in three-shaft driving mode through coaxial connection, gear driving or track driving to form a three-shaft turbine generator together with the generator.

[0013] Further, the system is further provided with an air compressor and a fuel bottle, and the air compressor and the fuel bottle are respectively connected with the combustion chamber of the combustor through pipelines.

[0014] Preferably, when the system is started, the compressed air provided by the air compressor and the fuel gas provided by the fuel bottle are simultaneously input into the combustor, when the outlet temperature of the combustion chamber of the combustor reaches the target process value, the gas turbine generator is driven to operate, when the reaction channel temperature of the ammonia decomposition reactor reaches the process value and the temperature of the heat exchanger also reaches the target process value, the liquid ammonia pump is started, when it is detected that the generator starts to generate electricity, the air compressor is closed, and when it is detected that the product gas stream flowing out of the ammonia decomposition reactor reaches the process value, the fuel bottle is closed.

[0015] Further, the fuel in the fuel bottle is a combustible gas or a volatile combustible liquid, which includes one or a mixture of several fuels of natural gas, hydrogen, ammonia, liquefied petroleum gas, methanol, ethanol, propanol, gasoline, aviation fuel.

[0016] Further, the reaction channel of the ammonia decomposition reactor is filled with iron-based catalyst and / or ruthenium-based catalyst, and when the ammonia decomposition reactor is normally operated, the ammonia decomposition reaction temperature in the ammonia decomposition reactor is 350-850℃, the ammonia space velocity is 1000-30000h -1 , and the gas pressure in the reaction channel is 0.06-1.8MPa.

[0017] Preferably, the ammonia decomposition reaction temperature is 450-580℃, the ammonia space velocity is 5000-12000h -1 , and the gas temperature at the outlet of the combustion chamber of the combustor is ≥750℃.

[0018] The technical scheme of the utility model has the following advantages:

[0019] A. The gas turbine in the system of the utility model only uses single ammonia fuel, and the hydrogen production reaction in the ammonia decomposition reactor is coupled to drive the gas turbine, which greatly simplifies the complexity of the system, and the temperature matching design of each component is achieved. The optimization of heat energy and kinetic energy utilization efficiency, the heat generated in the combustion chamber of the combustor makes the high-temperature flue gas and the surrounding gas expand to drive the steam turbine to rotate, and the flue gas heat in the combustor is utilized four times in stages:

[0020] Firstly, the flue gas waste heat after the work of the third turbine is used to heat the materials in the ammonia decomposition reactor, which promotes the reaction of the enthalpy change increase of the ammonia decomposition hydrogen production under the premise of no additional function;

[0021] Secondly, the kinetic energy of the cooled flue gas successively drives the work of the second turbine and the first turbine, and the turbine supercharging principle is used to make the inhaled ambient air increase once, thereby saving the energy consumption of the high-pressure air compressor, and the temperature-increased air generated by the supercharging is heated by heat exchange to provide the energy for the gasification of liquid ammonia;

[0022] Again, the utility model discloses a liquid ammonia or lower temperature ammonia gas as the cold source, and the two-stage intercooler is cooled, the efficiency of intercooler is improved, thereby help to increase compression ratio.

[0023] Finally, the flue gas after recooling further heats the ammonia gas flow in the heat exchanger.

[0024] The utility model discloses high comprehensive energy efficiency, and the efficiency for power generation can reach 50 -70%, if the energy efficiency utilization of tail gas is combined, can further reach 80-85%, and simultaneously, the use of zero carbon ammonia fuel is favorable to promote carbon emission reduction and help to realize the carbon neutralization strategy of the country.

[0025] B.The utility model system compactness is strong, and each rotating shaft in first air pressure boosting device, second air pressure boosting device and gas turbine power generation device forms coaxial series connection, makes coupling structure greatly simplify, thereby improves the reliability of system.

[0026] C.The utility model system provides air compressor and fuel bottle, when the system is in the stop state and needs cold start, or standby state needs to change into normal operating state, utilizes air compressor and fuel bottle to start whole device, until the temperature of burner outlet gas, the reaction channel temperature of ammonia decomposition reactor and reaction product flow and the temperature of heat exchanger all reach target process requirement, control air compressor and fuel bottle close, realize the independent operation of device, make generator can continuously output electric energy.

[0027] D.The utility model discloses still can directly replace generator with kinetic energy load system, realizes the output of kinetic energy and electric power, is suitable for steamship, car and other large -scale mobile equipment and heavy gas turbine, micro -type gas turbine's power generation and cogeneration, and application is wide. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the specific embodiment of the utility model, the following will be briefly introduced to the drawings needed to be used in the specific embodiment, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

[0029] Figure 1 It is the connection schematic diagram of the three-shaft gas turbine power system driven by ammonia hydrogen provided by the utility model;

[0030] Figure 2 It is the connection schematic diagram of the three-shaft gas turbine power system driven by ammonia hydrogen provided by the utility model with starting device.

[0031] The meaning of the identification in the drawing is as follows:

[0032] 1-liquid ammonia tank; 2-liquid ammonia pump; 3-first intercooler; 3a-compressed gas passage I, 3b-liquid ammonia passage; 4-second intercooler, 4a-compressed gas passage II, 4b-ammonia gas passage I; 5-heat exchanger, 5a-ammonia gas passage II, 5b-smoke gas passage II; 6-ammonia decomposition reactor, 6a-reaction passage, 6b-smoke gas passage I; 7-combustor; 8-first compressor; 9-first turbine; 10-second compressor; 11-second turbine; 12-third compressor; 13-third turbine; 14-generator; 15-tail gas treatment unit; 16-air compressor; 17-fuel bottle. DETAILED DESCRIPTION

[0033] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] The "gas space velocity" is a common technical term under the technical route of fixed bed reactor, which refers to the volume of gas flowing through a unit volume of catalyst per unit time under standard conditions, and its unit is commonly h-1. -1 .

[0035] As shown in Figure 1 The present application provides a kind of ammonia hydrogen production driven three-shaft gas turbine power system, including liquid ammonia tank 1, liquid ammonia pump 2, first intercooler 3, second intercooler 4, heat exchanger 5, ammonia decomposition reactor 6, combustor 7, first air pressurizing device, second air pressurizing device, gas turbine power generation device and tail gas treatment unit 15;Gas turbine power generation device includes generator 14 and coaxially arranged third compressor 12 and third turbine 13, and generator 14 is coaxially connected with third turbine 13;First intercooler 3 includes compressed gas passage I 3a and liquid ammonia passage 3b;Second intercooler 4 includes ammonia gas passage I 4b and compressed gas passage II 4a;Heat exchanger 5 includes ammonia gas passage II 5a and smoke gas passage II 5b;Ammonia decomposition reactor 6 includes reaction passage 6a and smoke gas passage I 6b;First intercooler 3 and second intercooler 4 are actually a kind of heat exchanger, and its main role is to cool the outlet gas of low-pressure compressor, to help system to obtain higher compression ratio, and first intercooler 3 and second intercooler 4 are cooled using liquid ammonia and gaseous low-temperature ammonia gas respectively.

[0036] First air pressurizing device includes coaxially arranged first compressor 8 and first turbine 9, and second air pressurizing device includes coaxially arranged second compressor 10 and second turbine 11.

[0037] The liquid ammonia pump 2 is connected with the outlet of the liquid ammonia tank 1, the outlet of the liquid ammonia pump 2 is connected with the inlet of the liquid ammonia channel 3b of the first intercooler 3 through a pipeline, the outlet of the liquid ammonia channel 3b is connected with the inlet of the ammonia gas channel I4b of the second intercooler 4 through a pipeline, the outlet of the ammonia gas channel I4b is connected with the inlet of the ammonia gas channel II5a of the heat exchanger 5 through a pipeline, the outlet of the ammonia gas channel II5a is connected with the inlet of the reaction channel 6a of the ammonia decomposition reactor 6 through a pipeline, and the outlet of the reaction channel 6a is connected with the combustor 7 through a pipeline; the first air compressor 8 inhales ambient air and pressurizes the ambient air to input into the inlet of the compressed gas channel I3a of the first intercooler 3, the outlet of the compressed gas channel I3a is connected with the second air compressor 10 through a pipeline, the second air compressor 10 pressurizes air to input into the inlet of the compressed gas channel II4a of the second intercooler 4, the air discharged from the outlet of the compressed gas channel II4a is compressed by the third air compressor 12 and then input into the combustor 7 to mix with product gas discharged from the outlet of the reaction channel 6a; the flue gas outlet of the combustor 7 is connected with the inlet of the third turbine 13 through a pipeline, the outlet of the third turbine 13 is connected with the inlet of the flue gas channel I6b of the ammonia decomposition reactor 6 through a pipeline, the outlet of the flue gas channel I6b is connected with the second turbine 11 and the first turbine 9 through a pipeline in sequence, and the flue gas is delivered to the flue gas channel II5b of the heat exchanger 5, and the outlet of the flue gas channel II5b is connected with the tail gas treatment unit 15 through a pipeline, and tail gas waste heat can be treated or recycled.

[0038] The first air compressor 8 and the first turbine 9 have a common rotating shaft I in the utility model, and the first turbine 9 rotates to drive the first air compressor 8 to rotate synchronously; the second air compressor 10 and the second turbine 11 have a common rotating shaft II, and the second turbine 11 rotates to drive the second air compressor 10 to rotate synchronously; the third air compressor 12 and the third turbine 13 have the same rotating shaft III, and the third turbine 13 rotates to drive the third air compressor 12 to rotate. Of course, the rotating shaft I, the rotating shaft II and the rotating shaft III can be coaxially connected in series to form a three-shaft turbine generator. The rotating shaft I, the rotating shaft II and the rotating shaft III can be connected coaxially, driven by a gear or a track belt, and the like, to form linkage and drive the rotor of the generator 14 to rotate, so that the generator 14 generates electricity.

[0039] For example, the first compressor 8 is coaxial with the first turbine 9, the rotating shaft I is a solid shaft; the second compressor 10 is coaxial with the second turbine 11, the rotating shaft II is a hollow shaft, the rotating shaft I of the first turbine 9 passes through the middle of the rotating shaft II; the third compressor 12 is coaxial with the third turbine 13, the rotating shaft III is a hollow shaft, the hollow shaft of the second turbine 11 passes through the middle of the rotating shaft III. The above-mentioned configuration mode of two hollow shafts and one solid shaft (or two solid shafts and one hollow shaft) can realize more compact mechanical structure, and there is no direct mechanical transmission relationship between the rotating shafts; the first turbine 11, the second turbine 12 and the third turbine 13 are driven by the same gas flow in sequence and produce rotation respectively.

[0040] Of course, the generator 14 can also be replaced by a kinetic load such as a flywheel, a propeller, a rotating shaft, etc., which can be used to drive power equipment such as a car, a ship, an airplane, etc.

[0041] The specific process is described as follows:

[0042] The liquid ammonia pump 2 pumps the liquid ammonia into the liquid ammonia passage 3b inlet of the first intercooler 3 at a certain flow rate, the liquid ammonia flows out of the first intercooler 3 and is completely gasified, the ammonia gas from the first intercooler 3 enters the ammonia gas passage I 4b from the inlet of the second intercooler 4, and then flows out of the second intercooler 4, enters the ammonia gas passage II 5a from the inlet of the heat exchanger 5, and flows out from the outlet after heat exchange; the hot ammonia gas from the heat exchanger 5 enters the reaction passage 6a of the ammonia decomposition reactor through the inlet of the ammonia decomposition reactor 6, the product gas generated by the reaction flows out from the outlet of the ammonia decomposition reactor 6, and enters the downstream combustor 7.

[0043] The first compressor 8 inhales air from the environment, the air is compressed and flows out of the first compressor 8, enters the compressed air passage I3a of the first intercooler 3, is cooled and then enters the second compressor 10; the compressed air from the first compressor 8 is further compressed in the second compressor 10; the compressed air flowing out of the second compressor 10 enters the compressed air passage II4a of the second intercooler 4 from the inlet of the second intercooler 4, is cooled and then flows out of the outlet of the second intercooler 4 and enters the third compressor 12; the compressed air from the second compressor 10 is further compressed in the third compressor 12; the compressed air flowing out of the third compressor 12 mixes with the product gas flowing out of the reaction passage 6a of the ammonia decomposition reactor and then burns in the combustor 7; the product flue gas flowing out of the flue gas outlet of the combustor 7 flows into the third turbine 13, the flue gas flow drives the blades of the third turbine 13 to rotate, and drives the turbine shaft and the rotating shaft of the third compressor 12 to rotate together; the flue gas flowing out of the third turbine 13 enters the flue gas passage I6b of the ammonia decomposition reactor 6 from the inlet of the ammonia decomposition reactor, and the heat-exchanged flue gas flows out of the ammonia decomposition reactor 6, enters the second turbine 11, the flue gas flow drives the blades of the second turbine 11 to rotate, and drives the turbine shaft and the rotating shaft of the second compressor 10 to rotate together; the flue gas flowing out of the second turbine 11 enters the first turbine 9, drives the blades of the first turbine 9 to rotate, and drives the turbine shaft and the rotating shaft of the second compressor 8 to rotate together; the flue gas flowing out of the first turbine 9 enters the flue gas passage II5b of the heat exchanger 5, is heat-exchanged, flows out of the heat exchanger 5 and enters the tail gas treatment unit 15.

[0044] Since the first air pressurizing device, the second air pressurizing device and the gas turbine power generation device are coaxial, the blades of the first turbine 9, the second turbine 11 and the third turbine 13 rotate, drive the turbine shafts corresponding to the blades, the rotating shafts of the first compressor 8, the second compressor 10 and the third compressor 12 rotate together, and further drive the rotor of the generator 14 to rotate, so that the generator 14 generates power.

[0045] The process conditions of the system under the continuous working state are as follows:

[0046] The ammonia decomposition reactor 6 uses a fixed bed reactor technical route, that is, the ammonia decomposition reaction catalyst is filled in the reaction passage 6a in the form of a fixed bed layer, and the temperature of the catalyst in the reaction passage 6a is mainly controlled by heating of the flue gas entering the flue gas passage I6b; the ammonia decomposition reaction catalyst is preferably an iron-based catalyst or a ruthenium-based catalyst, or the two types of catalysts are mixed and filled; after the ammonia decomposition reactor 6 is stably operated, the reaction conditions are as follows: the reaction temperature is 350-850 DEG C, preferably 450-580 DEG C; the space velocity of the ammonia gas in the reaction passage 6a is 1000-30000 h -1 , preferably 5000-12000 h -1The mass flow rate of the ammonia entering the ammonia decomposition reactor 6 can be calculated according to the filling amount of the catalyst and the target space velocity; the gas pressure in the reaction channel 6a is between 0.06-1.8 MPa; after the ammonia gas flows through the ammonia decomposition catalyst, the ammonia gas is converted into decomposition products to obtain hydrogen and nitrogen, and the conversion rate of the ammonia gas is greater than 98.0%.

[0047] The burner 7 contains an ignition device, and after successful ignition and stable operation of the device at a suitable fuel flow rate and air flow rate, the flow rate of the compressed air is 1-40 times the flow rate of the ammonia gas flowing into the ammonia decomposition reactor; whether the combustion state meets the process conditions is judged according to whether the outlet gas temperature of the burner continuously remains not lower than 750 DEG C, and the working temperature of the boiler 3 in the utility model is between 70 DEG C-400 DEG C.

[0048] As shown in Figure 2 As a further preferred embodiment of the utility model, the system is provided with an air compressor 16 and a fuel bottle 17, which are respectively communicated with the combustion chamber of the burner 7 through pipelines. When the system is in a stop state and needs to be cold started, or in a standby state and needs to be changed into a normal operation state, the air compressor 16 and the fuel bottle 17 need to be operated, so that the system reaches the normal operation condition and then the air compressor and the fuel bottle are closed. The specific starting operation method is as follows:

[0049] The air compressor 16 is opened, the fuel bottle 17 is started, compressed air and fuel gas are mixed and ignited to form flue gas, and the third turbine 13 starts to rotate when the flue gas temperature reaches the target process value; the tail gas of the third turbine 13 enters the inlet of the flue gas channel I6b, and the liquid ammonia pump 2 is started when the temperature in the reaction channel 6a of the ammonia decomposition reactor 6 reaches the process value and the temperature of the heat exchanger 5 also reaches the target process value, so that the liquid ammonia flows out of the liquid ammonia tank 1 and further flows; the air compressor 16 is closed or disconnected from the system when the generator 14 starts to generate electricity, and the air source is switched to the ambient atmosphere at this time; the fuel bottle 17 is closed or disconnected from the system when the product gas flow from the reaction channel 6a reaches the process value; and the power generation device can be continuously operated and the generator 14 can continuously output electric energy. The fuel bottle 17 contains combustible gas or volatile combustible liquid, such as natural gas, hydrogen, ammonia, liquefied petroleum gas, methanol, ethanol, propanol, gasoline, aviation fuel, etc., which can stably burn in air or be mixed and combined with these fuels.

[0050] The unmentioned parts of the utility model are applicable to the prior art.

[0051] Obviously, the above embodiments are merely exemplary and not limiting. Based on the above description, one of ordinary skill in the art can make other different forms of changes or modifications. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or modifications derived therefrom are still within the protection scope of the present application.

Claims

1. An ammonia-to-hydrogen driven tri-axial gas turbine power system, characterized by, The system comprises a liquid ammonia tank (1), a liquid ammonia pump (2), a first intercooler (3), a second intercooler (4), a heat exchanger (5), an ammonia decomposition reactor (6), a combustor (7), a first air pressurizing device, a second air pressurizing device, a gas turbine power generation device, and a tail gas treatment unit (15); the gas turbine power generation device comprises a generator (14) and coaxially arranged third compressor (12) and third turbine (13), the generator (14) and the third turbine (13) form coaxial driving connection; The liquid ammonia pump (2) inlet is connected with the liquid ammonia tank (1) outlet, the liquid ammonia pump (2) outlet is connected with the liquid ammonia passage (3b) inlet of the first intercooler (3) through a pipeline, the liquid ammonia passage (3b) outlet is connected with the ammonia gas passage I (4b) inlet of the second intercooler (4) through a pipeline, the ammonia gas passage I (4b) outlet is connected with the ammonia gas passage II (5a) inlet of the heat exchanger (5) through a pipeline, the ammonia gas passage II (5a) outlet is connected with the reaction passage (6a) inlet of the ammonia decomposition reactor (6) through a pipeline, and the reaction passage (6a) outlet is connected with the combustor (7) through a pipeline. The first air pressurizing device inhales ambient air and inputs the pressurized air into the compressed gas passage I (3a) inlet of the first intercooler (3), the compressed gas passage I (3a) outlet is connected with the second air pressurizing device through a pipeline, the second air pressurizing device inputs the compressed air into the compressed gas passage II (4a) inlet of the second intercooler (4) after compressing the air, the air discharged from the compressed gas passage II (4a) outlet is compressed by the third compressor (12) and then input into the combustor (7) to mix with the product gas discharged from the reaction passage (6a) outlet. The flue gas outlet of the combustor (7) is connected with the third turbine (13) inlet through a pipeline, the third turbine (13) outlet is connected with the flue gas passage I (6b) inlet of the ammonia decomposition reactor (6) through a pipeline, the flue gas passage I (6b) outlet is connected with the second air pressurizing device and the first air pressurizing device through a pipeline in sequence, and the flue gas is delivered to the flue gas passage II (5b) of the heat exchanger (5), and the flue gas passage II (5b) outlet is connected with the tail gas treatment unit (15) through a pipeline.

2. The ammonia-to-hydrogen powered tribrid gas turbine power system of claim 1 wherein, The first air pressurizing device comprises a first compressor (8) and a first turbine (9) arranged coaxially, and the second air pressurizing device comprises a second compressor (10) and a second turbine (11) arranged coaxially; the outlet of the first compressor (8) is connected with the compressed gas passage I (3a) inlet of the first intercooler (3) through a pipeline; the inlet of the second compressor (10) is connected with the compressed gas passage I (3a) outlet of the first intercooler (3) through a pipeline, and the outlet of the second compressor (10) is connected with the compressed gas passage II (4a) inlet of the second intercooler (4) through a pipeline.

3. The ammonia-to-hydrogen powered tribrid gas turbine power system of claim 2, wherein, The rotation shaft I of the first compressor (8) and the first turbine (9), the rotation shaft II of the second compressor (10) and the second turbine (11), and the rotation shaft III of the third compressor (12) and the third turbine (13) are coaxially connected in series, and form a three-shaft turbine generator with the generator.

4. The ammonia-to-hydrogen powered tribrid gas turbine power system of claim 2, wherein, The rotation shaft I of the first compressor (8) and the first turbine (9), the rotation shaft II of the second compressor (10) and the second turbine (11), and the rotation shaft III of the third compressor (12) and the third turbine (13) are connected by coaxial linkage, gear drive or track drive to form a three-shaft drive connection, and form a three-shaft turbine generator with the generator.

5. The ammonia-to-hydrogen-powered tribrid gas turbine power system according to any one of claims 1-4, characterized in that, The system is also provided with an air compressor (16) and a fuel bottle (17), which are respectively communicated with the combustion chamber of the combustor (7) through pipelines.

6. The ammonia-to-hydrogen-powered tribrid gas turbine power system of claim 5, wherein, When the system is started, the compressed air provided by the air compressor (16) and the fuel gas provided by the fuel bottle (17) are simultaneously input into the combustor (7), and when the outlet temperature of the combustion chamber of the combustor (7) reaches the target process value, the gas turbine power generation device is driven to operate; when the temperature of the reaction channel (6a) of the ammonia decomposition reactor (6) reaches the process value, and the temperature of the heat exchanger (5) also reaches the target process value, the liquid ammonia pump (2) is started; when it is detected that the generator (14) starts to generate electricity, the air compressor (16) is closed; when it is detected that the product gas stream flowing out of the ammonia decomposition reactor (6) reaches the process value, the fuel bottle (17) is closed.

7. The ammonia-to-hydrogen-powered tribrid gas turbine power system, according to claim 6, wherein, The fuel in the fuel bottle (17) is a combustible gas or a volatile combustible liquid, which includes one or a mixture of several fuels of natural gas, hydrogen, ammonia, liquefied petroleum gas, methanol, ethanol, propanol, gasoline, aviation coal. The fuel in the fuel bottle (17) is a combustible gas or a volatile combustible liquid, which includes one or a mixture of several fuels of natural gas, hydrogen, ammonia, liquefied petroleum gas, methanol, ethanol, propanol, gasoline, aviation coal.

8. The ammonia-to-hydrogen-powered tribrid gas turbine power system, according to claim 1, wherein, The reaction channel (6a) of the ammonia decomposition reactor (6) is filled with iron-based catalyst and / or ruthenium-based catalyst, and the ammonia decomposition reactor (6) has a normal operation ammonia decomposition reaction temperature of 350-850℃, an ammonia space velocity of 1000-30000h -1 , and a gas pressure in the reaction channel (6a) of 0.06-1.8MPa.

9. The ammonia-to-hydrogen-powered tribrid gas turbine power system, according to claim 8, wherein, The ammonia decomposition reaction temperature is 450-580℃, and the ammonia space velocity is 5000-12000h -1 The gas temperature at the outlet of the combustion chamber of the burner (7) is ≥750℃.

Images