Hydrogen-doped gas turbine power generation system mixed with solar energy and use method of hydrogen-doped gas turbine power generation system

Abstract

The invention belongs to the technical field of gas turbines, and particularly relates to a hydrogen-doped gas turbine power generation system mixed with solar energy and a use method of the hydrogen-doped gas turbine power generation system. During operation, liquid ammonia is heated and cracked into nitrogen and hydrogen in a heat exchanger (5), and the nitrogen and the hydrogen are combusted and do work together with natural gas and high-temperature and high-pressure gas in a combustion chamber (6); compressed air output by the gas compressor (2) exchanges heat with tail gas exhausted by the turbine (3) in the heat regenerator (4) and then is output to the heat collector (1), high-temperature and high-pressure gas is formed after solar irradiation heat is absorbed, the high-temperature and high-pressure gas flows through the heat exchanger (5) to promote liquid ammonia cracking, and then the high-temperature and high-pressure gas is input into the combustion chamber (6) for a new round of circulation. Compared with the prior art, the system has the advantages that solar heat is added on the basis of utilizing waste heat of the gas turbine, so that ammonia gas is cracked to obtain nitrogen and hydrogen, carbon emission is reduced, meanwhile, solar energy is utilized to heat fuel gas in the combustion chamber, the use of fuel quantity can be reduced to a certain extent, and the effects of energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of gas turbines, and in particular relates to a solar-hybrid hydrogen-blended gas turbine power generation system and a use method thereof. Background Art

[0002] Heavy-duty gas turbines are the most efficient heat-to-power conversion power generation equipment to date. With the advancement of the "carbon peak and carbon neutrality" goals, reducing carbon emissions has become an important design indicator. At present, the existing technologies related to the present invention mainly use the exhaust heat at the compressor end and the turbine end to achieve ammonia blending and cracking, thereby reducing the carbon emissions of gas turbines.

[0003] Patent CN115387914A discloses a combined power generation system of an ammonia decomposition synthesis gas turbine and a hydrogen-blended gas turbine, which generates electricity and heat by working the hydrogen and nitrogen produced by ammonia decomposition, and recycles the hydrogen as fuel after purification, and uses the generated heat for gasification of liquid ammonia. This patent uses hydrogen multiple times, and the device is more complicated. In addition, liquid ammonia cannot be efficiently cracked by using only the waste heat of the exhaust gas discharged by the gas turbine, and nitrogen oxides and carbon emissions will still be generated, causing pollution.

[0004] Patent CN115387913A discloses an ammonia-blended gas turbine power generation system with an integrated ammonia evaporator and an intercooler, including a low-pressure compressor, a high-pressure compressor, a combustion chamber, a turbine, a generator and an intercooler. This invention heats liquid ammonia to obtain ammonia vapor, and passes the ammonia vapor and natural gas into the combustion chamber for combustion to generate electricity. However, this patent does not treat the exhaust gas discharged from the turbine outlet, resulting in waste of exhaust gas heat and pollution, and there is only one heating source in the combustion process, resulting in high energy consumption.

[0005] Therefore, it is urgent to solve the problem that it is difficult to achieve the purpose of cracking ammonia by relying on the exhaust waste heat (450℃-650℃) generated by the gas turbine itself, and the existing technology cannot save fuel usage and cannot reduce the operating cost of the power plant. Summary of the invention

[0006] In view of the problem that the waste heat generated by the gas turbine cannot crack ammonia, and the gas turbine power generation system consumes fuel and has a high power generation cost, the present invention proposes a hybrid solar energy hydrogen-blended gas turbine power generation system and a method of using it, which can crack ammonia to reduce carbon emissions, and use the waste heat of gas turbine exhaust and the heat generated by solar energy to preheat air into high-temperature and high-pressure gas, thereby reducing fuel usage.

[0007] The purpose of the present invention is achieved through the following technical solutions:

[0008] One of the technical solutions of the present invention is to provide a solar-powered, hydrogen-doped gas turbine power generation system, including a gas turbine assembly and an electronic control element;

[0009] The gas turbine assembly includes a heat collector, a compressor, a turbine, a regenerator, a heat exchanger, and a combustion chamber;

[0010] The output ends of the compressor and the turbine are both connected to the input end of the regenerator, and the exhaust gas output by the turbine exchanges heat with the compressed air output by the compressor in the regenerator. After the heat exchange, the regenerator discharges the exhaust gas and outputs the compressed air to the collector;

[0011] The collector heats the compressed air from the regenerator through solar radiation heat exchange to obtain high-temperature and high-pressure gas. The high-temperature and high-pressure gas and liquid ammonia are respectively input into the heat exchanger through the hot flow inlet and the cold flow inlet of the heat exchanger and heat exchange in the heat exchanger. The high-temperature and high-pressure gas after heat exchange and the gas generated by the cracking of liquid ammonia are respectively output to the combustion chamber through the hot flow outlet and the cold flow outlet of the heat exchanger. Natural gas is also introduced into the combustion chamber. The output end of the combustion chamber is connected to the input end of the turbine.

[0012] The electronic control element is electrically connected to the gas turbine assembly and is used for electronically controlling the gas turbine assembly.

[0013] Furthermore, the regenerator exchanges heat between the compressed air input from the compressor and the exhaust gas input from the turbine, and preliminarily heats the compressed air before transmitting it to the collector.

[0014] Furthermore, after the turbine generates electricity, the exhaust gas is output to the regenerator, so as to recover the heat in the exhaust gas.

[0015] Furthermore, the compressor inputs compressed air into the regenerator through the cold flow inlet of the regenerator, and the turbine inputs exhaust gas into the regenerator through the hot flow inlet of the regenerator. After heat exchange, the exhaust gas is discharged to the atmosphere through the hot flow outlet of the regenerator, and the compressed air is output to the collector through the cold flow outlet of the regenerator.

[0016] Furthermore, since the gas turbine exhaust contains water vapor, liquid water will form in the pipeline after leaving the turbine. The use of a recuperator helps to avoid the impact of condensed water on the equipment, and the latent heat released by the condensation of water vapor can also help to preliminarily heat the compressed air.

[0017] Furthermore, the output end of the heat collector is connected to the hot flow inlet of the heat exchanger, and the hot flow outlet of the heat exchanger is connected to the input end of the combustion chamber; the cold flow inlet of the heat exchanger is used to input liquid ammonia, and the cold flow outlet of the heat exchanger is connected to the input end of the combustion chamber for outputting the gas generated after the cracking of the liquid ammonia.

[0018] Furthermore, the collector reheats the compressed air from the regenerator through radiation heat exchange to obtain high-temperature and high-pressure gas, which enters the heat exchanger through the heat flow inlet of the heat exchanger.

[0019] Furthermore, the liquid ammonia is input into the heat exchanger through the cold flow inlet of the heat exchanger, and is thermally cracked into nitrogen and hydrogen in the heat exchanger, and the nitrogen and hydrogen are output to the combustion chamber through the cold flow outlet.

[0020] Furthermore, the heat for heat exchange of the liquid ammonia in the heat exchanger comes from the high-temperature and high-pressure gas output from the collector to the heat exchanger, and the thermal energy of the high-temperature and high-pressure gas comes from the thermal energy of solar energy and exhaust gas, and mainly comes from solar energy. Since the cracking of ammonia into hydrogen and ammonia requires high temperature conditions (above 800°C), the compressed air discharged from the compressor is converted into high-temperature and high-pressure gas by utilizing the waste heat of the gas turbine exhaust gas and the heat of solar energy. After the high-temperature gas enters the heat exchanger, it can provide stable high-temperature conditions for the cracking of liquid ammonia, and the liquid ammonia is heated evenly through pipeline heat exchange, thereby ensuring that the liquid ammonia can be stably cracked.

[0021] Furthermore, the temperature of the heat flow inlet of the heat exchanger is 900°C-1200°C.

[0022] Furthermore, the temperature of the hot flow inlet of the heat exchanger is preferably 1000° C. Without adding any catalyst, the high temperature can ensure that the liquid ammonia is fully cracked.

[0023] Furthermore, the high-temperature and high-pressure gas in the heat exchanger is discharged from the hot flow outlet to the combustion chamber, and the nitrogen and hydrogen are discharged from the cold flow outlet to the combustion chamber.

[0024] Furthermore, natural gas is introduced into the combustion chamber.

[0025] Furthermore, high-temperature and high-pressure gas, nitrogen, hydrogen and natural gas are introduced into the combustion chamber for mixed combustion, and heat energy is output to the turbine for power generation.

[0026] Furthermore, the ideal hydrogen blending ratio of the natural gas / hydrogen mixed fuel in the combustion chamber is 5%-20%. The mixed fuel with this ratio can be used on existing gas turbines, requiring less equipment modification and significantly reducing CO2 emissions.

[0027] Furthermore, the ideal hydrogen blending ratio of the natural gas / hydrogen mixed fuel in the combustion chamber is preferably 15%. When the hydrogen blending ratio is 15%, the efficiency can be improved while maintaining NO x Low emissions, significantly reducing CO2 emissions, relatively easier to control in safety management, and with lower risks.

[0028] Furthermore, the gas turbine assembly also includes a liquid ammonia tank and a pump. The liquid ammonia tank, the pump and the cold flow inlet of the heat exchanger are connected in sequence. The liquid ammonia comes from the liquid ammonia tank, and the liquid ammonia is transported to the heat exchanger under the action of the pump.

[0029] Furthermore, the gas turbine power generation system further comprises a photovoltaic array and a battery, wherein the photovoltaic array, the battery and the electronic control element are electrically connected;

[0030] The photovoltaic array is used to convert light energy into electrical energy, a part of which is input into the electronically controlled element for controlling the gas turbine assembly, and the remaining part is stored in the battery. The electronically controlled element electronically controls the gas turbine assembly when the gas turbine power generation system is running. When the light energy is insufficient to provide electrical energy for the electronically controlled element, the battery is enabled to power the electronically controlled element. This allows the electronically controlled element to electronically control the gas turbine assembly when the light energy is insufficient and the gas turbine power generation system is running, which is beneficial to saving energy and ensuring safe and stable operation of the gas turbine.

[0031] Furthermore, the gas turbine assembly is connected to a load, wherein the compressor and the turbine are connected to the load via a shaft.

[0032] The second technical solution of the present invention is to provide a method for using a hybrid solar energy hydrogen-blended gas turbine power generation system, including: liquid ammonia is pumped out from a liquid ammonia tank and enters a heat exchanger from a cold flow inlet, high-temperature and high-pressure gas flows through the heat exchanger to bring heat, liquid ammonia is thermally cracked into nitrogen and hydrogen in the heat exchanger, and is burned together with natural gas and high-temperature and high-pressure gas in a combustion chamber, exhaust gas formed by combustion performs work in a turbine and is output to a regenerator, exhaust gas is discharged after heat exchange with compressed air in a compressor in the regenerator, compressed air is output to a collector to absorb solar radiation heat to form high-temperature and high-pressure gas, high-temperature and high-pressure gas flows through a heat exchanger to exchange heat with liquid ammonia to promote liquid ammonia cracking, and then is input into the combustion chamber for circulation.

[0033] Compared with the prior art, the present invention has the following advantages:

[0034] 1. Stable cracking of liquid ammonia: The cracking of ammonia into nitrogen and hydrogen requires high temperature conditions (above 800°C). During operation, this system uses the waste heat of gas turbine exhaust and the heat of solar energy to convert the compressed air discharged from the compressor into high-temperature and high-pressure gas, convert light energy into the internal energy of high-temperature and high-pressure gas, and transport the high-temperature and high-pressure gas to the heat exchanger to crack liquid ammonia to obtain nitrogen and hydrogen. After entering the heat exchanger, the high-temperature and high-pressure gas can provide stable high-temperature conditions for the cracking of liquid ammonia, and the liquid ammonia is heated evenly through pipeline heat exchange, ensuring that the liquid ammonia can be stably cracked, thereby ensuring the stable output of nitrogen and hydrogen.

[0035] 2. Save fuel: High-temperature and high-pressure gas entering the combustion chamber increases the temperature of the combustion chamber. The thermal efficiency is directly related to the temperature of the gas entering the combustion chamber. The introduction of high-temperature and high-pressure gas into the combustion chamber can improve the efficiency of the Brayton cycle and increase the temperature difference in the combustion chamber, thereby improving the thermal efficiency. The thermal efficiency is proportional to the ratio of the highest temperature to the lowest temperature. Increasing the temperature of the high-temperature part can significantly improve the cycle efficiency, so that less fuel can be used to produce the same output work. High-temperature and high-pressure gas enters the combustion chamber as one of the fuel gases to burn and do work. When the heat provided by solar energy is high enough, the temperature of the high-temperature and high-pressure gas is higher and the amount of additional fuel required is less, because part of the energy has been stored in the gas, reducing fuel consumption, saving power generation costs, and reducing pollution caused by fuel combustion, improving the economy of the system. In addition, the introduction of high-temperature and high-pressure gas can increase the expansion ratio after combustion, making the overall efficiency of the gas turbine higher, thereby reducing the use of fuel. High-temperature and high-pressure gas helps to improve the combustion process, making the fuel burn more completely, reducing fuel losses, and improving the heat release efficiency of the fuel.

[0036] 3. Energy saving and emission reduction: In the present invention, the main components of the fuel entering the combustion chamber are nitrogen, hydrogen and natural gas. Compared with pure natural gas as fuel, the combustion of hydrogen-blended fuel gas can effectively reduce carbon emissions, save natural gas energy, reduce the carbon content in the exhaust gas, and achieve the effect of energy saving and emission reduction.

[0037] 4. Recovery of exhaust gas heat: The present invention recovers the heat in the exhaust gas discharged by the turbine through a heat exchanger, preheats the compressed air, reduces the heat waste of the exhaust gas, improves energy utilization efficiency, and saves energy at the same time.

[0038] 5. The device of the present invention is simple, easy to operate and easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the structure of a hydrogen-blended gas turbine power generation system hybrid with solar energy;

[0040] In the figure: 1-collector; 2-compressor; 3-turbine; 4-regenerator; 5-heat exchanger; 6-combustion chamber; 7-liquid ammonia tank; 8-pump; 9-photovoltaic array; 10-battery; 11-electronic control element; 12-load. DETAILED DESCRIPTION

[0041] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0042] See also Figure 1To describe the present embodiment, a solar-hybrid hydrogen-blended gas turbine power generation system includes a gas turbine assembly and a solar power generation assembly;

[0043] The gas turbine assembly includes a heat collector 1, a compressor 2, a turbine 3, a regenerator 4, a heat exchanger 5, and a combustion chamber 6;

[0044] The output ends of the compressor 2 and the turbine 3 are both connected to the input end of the regenerator 4, the output end of the compressor 2 is connected to the cold flow inlet of the regenerator 4, the output end of the turbine 3 is connected to the hot flow inlet of the regenerator 4, the hot flow outlet of the regenerator 4 is connected to the atmosphere, and the cold flow outlet is connected to the input end of the collector 1, the exhaust gas output by the turbine 3 exchanges heat with the compressed air output by the compressor 2 in the regenerator 4, and after the heat exchange, the regenerator 4 discharges the exhaust gas from the hot flow outlet and outputs the compressed air from the cold flow outlet to the collector 1;

[0045] The output end of the heat collector 1 is connected to the hot flow inlet of the heat exchanger 5, the cold flow inlet of the heat exchanger 5 is connected to liquid ammonia, and the cold flow outlet and the hot flow outlet of the heat exchanger 5 are both connected to the combustion chamber 6. The heat collector 1 heats the compressed air from the regenerator 4 through solar radiation heat exchange to obtain high-temperature and high-pressure gas. The high-temperature and high-pressure gas and liquid ammonia are respectively input into the heat exchanger 5 through the hot flow inlet and the cold flow inlet of the heat exchanger 5 and exchange heat in the heat exchanger 5. The high-temperature and high-pressure gas after heat exchange and the gas generated by the cracking of liquid ammonia are respectively output to the combustion chamber 6 through the hot flow outlet and the cold flow outlet of the heat exchanger 5, and natural gas is also introduced into the combustion chamber 6. The output end of the combustion chamber 6 is connected to the input end of the turbine 3;

[0046] The electric control element 11 is electrically connected to the gas turbine assembly and is used to electrically control the gas turbine assembly;

[0047] The gas turbine power generation system further comprises a photovoltaic array 9 and a battery 10, wherein the photovoltaic array 9 and the battery 10 are electrically connected to an electric control element 11;

[0048] The photovoltaic array 9 is used to convert light energy into electrical energy, a part of which is input into the electronically controlled element 11 for controlling the gas turbine assembly, and the remaining part is stored in the battery 10. The electronically controlled element 11 electronically controls the gas turbine assembly when the gas turbine power generation system is running. When the light energy is insufficient to provide electrical energy for the electronically controlled element 11, the battery 10 is enabled to power the electronically controlled element 11, so that the electronically controlled element 11 electronically controls the gas turbine assembly when the light energy is insufficient and the gas turbine power generation system is running, which is beneficial to saving energy and ensuring the safe and stable operation of the gas turbine.

[0049] The gas turbine assembly also includes a liquid ammonia tank 7 and a pump 8. The liquid ammonia tank 7, the pump 8 and the cold flow inlet of the heat exchanger 5 are connected in sequence. The liquid ammonia comes from the liquid ammonia tank 7, and the liquid ammonia is transported to the heat exchanger 5 under the action of the pump 8.

[0050] The compressor 2 is used for compressing air, and the turbine 3 inputs fuel gas and outputs exhaust gas.

[0051] The compressed air output by the compressor 2 and the exhaust gas output by the turbine 3 are both delivered to the regenerator 4 .

[0052] The turbine 3 outputs the exhaust gas to the regenerator 4 after generating electricity, so as to recover the heat in the exhaust gas.

[0053] The regenerator 4 exchanges heat between the compressed air input by the compressor 2 and the exhaust gas input by the turbine 3 , preliminarily heats the compressed air and then transmits it to the collector 1 .

[0054] The compressor 2 inputs the compressed air into the regenerator 4 through the cold flow inlet, and the turbine 3 inputs the exhaust gas into the regenerator 4 through the hot flow inlet. After heat exchange, the exhaust gas is discharged to the atmosphere through the hot flow outlet of the regenerator 4, and the compressed air is output to the collector 1 through the cold flow outlet of the regenerator 4.

[0055] Since the gas turbine exhaust contains water vapor, liquid water will be formed in the pipeline after leaving the turbine 3. The use of the regenerator 4 helps to avoid the impact of condensed water on the equipment, and the latent heat released by the condensation of water vapor also helps to preliminarily heat the compressed air.

[0056] The output end of the heat collector 1 is connected to the hot flow inlet of the heat exchanger 5, and the hot flow outlet of the heat exchanger 5 is connected to the input end of the combustion chamber 6; the cold flow inlet of the heat exchanger 5 is used to input liquid ammonia, and the cold flow outlet of the heat exchanger 5 is connected to the input end of the combustion chamber 6 for outputting the gas generated after the cracking of the liquid ammonia.

[0057] In the collector 1, the compressed air from the regenerator 4 is reheated by radiation heat exchange to obtain high-temperature and high-pressure gas, which enters the heat exchanger 5 through the heat flow inlet of the heat exchanger 5. The flow process in the heat exchanger 5 is specifically as follows: input from the heat flow inlet, and output from the heat flow outlet to the combustion chamber 6 after heat exchange in the heat exchanger 5.

[0058] After the liquid ammonia is input into the heat exchanger 5 through the cold flow inlet of the heat exchanger, it exchanges heat with the high-temperature and high-pressure gas in the heat exchanger 5 to be cracked into nitrogen and hydrogen. The cracked nitrogen and hydrogen are output from the cold flow outlet to the combustion chamber 6.

[0059] The heat for heat exchange of the liquid ammonia in the heat exchanger 5 comes from the high-temperature and high-pressure gas output from the collector 1 to the heat exchanger 5, and the thermal energy of the high-temperature and high-pressure gas comes from the thermal energy of solar energy and exhaust gas, and mainly comes from solar energy. The cracking of ammonia into hydrogen and ammonia requires high temperature conditions (above 800°C). By utilizing the waste heat of the gas turbine exhaust gas and the heat of solar energy, the compressed air discharged from the compressor 2 is converted into high-temperature and high-pressure gas. After the high-temperature gas enters the heat exchanger 5, it can provide stable high-temperature conditions for the cracking of liquid ammonia, and the liquid ammonia is heated evenly through pipeline heat exchange, thereby ensuring that the liquid ammonia can be stably cracked.

[0060] The temperature of the hot flow inlet of the heat exchanger 5 is 900° C.-1200° C., preferably 1000° C., and the high temperature can ensure that the liquid ammonia is fully cracked without adding any catalyst.

[0061] The high-temperature and high-pressure gas in the heat exchanger 5 is discharged from the hot flow outlet to the combustion chamber 6 , and the nitrogen and hydrogen are discharged from the cold flow outlet to the combustion chamber 6 .

[0062] The gas source of the combustion chamber 6 is high temperature and high pressure gas, nitrogen, hydrogen, and natural gas;

[0063] High-temperature and high-pressure gas, nitrogen, hydrogen and natural gas are introduced into the combustion chamber 6 for combustion, and heat energy is output to the turbine 3 for power generation. The turbine 3 discharges the exhaust gas after work to the regenerator 4 for heat recovery.

[0064] The hydrogen blending ratio of the natural gas / hydrogen mixed fuel in the combustion chamber 6 is 5%-20%, preferably 15%.

[0065] When the hydrogen blending ratio is 5%-20%, the mixed fuel can be used in existing gas turbines, requiring less equipment modification and significantly reducing CO2 emissions. When the hydrogen blending ratio is 15%, it can improve efficiency while maintaining NO x Low emissions, significantly reducing CO2 emissions, relatively easier to control in safety management, and with lower risks.

[0066] The gas turbine assembly is connected to a load 12 , wherein the compressor 2 and the turbine 3 are connected to the load 12 via a shaft.

[0067] refer to Figure 1It can be seen that when the gas turbine power generation system of the present invention is in operation, first, the photovoltaic array 9 reflects sunlight to the collector 1, and the collector 1 converts light energy into heat energy. At the same time, the photovoltaic array 9 collects solar energy and converts it into electrical energy to be stored in the battery 10 and supplied to the electronic control element 11. The compressor 2 compresses the air and inputs it into the regenerator 4. At the same time, the turbine 3 outputs the exhaust gas to the regenerator 4. After the compressed air and the exhaust gas exchange heat in the regenerator 4, the exhaust gas is discharged to the atmosphere. After the compressed air is heat exchanged with the exhaust gas, it is output to the collector 1 for secondary heating to obtain high-temperature and high-pressure gas. The liquid ammonia in the liquid ammonia tank 7 is pressurized by the pump 8 and then input into the heat exchanger 5. The high-temperature and high-pressure gas outputted from the collector 1 flows through the heat exchanger 5. Specifically, the liquid ammonia enters from the cold flow inlet of the heat exchanger 5, and the high-temperature and high-pressure gas enters from the hot flow inlet of the heat exchanger 5. The liquid ammonia is thermally cracked into nitrogen and hydrogen, and outputted from the cold flow outlet of the heat exchanger 5 to the combustion chamber 6, and the high-temperature and high-pressure gas is outputted from the hot flow outlet of the heat exchanger 5 to the combustion chamber 6 after heat exchange. At the same time, natural gas is also introduced into the combustion chamber 6, so there are nitrogen, hydrogen, natural gas and high-temperature and high-pressure gas in the combustion chamber 6 for co-combustion, and the high-temperature and high-pressure gas can provide a part of the energy, thereby improving the cycle efficiency. The heat energy obtained after the combustion in the combustion chamber 6 drives the turbine 3 to generate electricity, and the turbine 3 discharges the exhaust gas to the regenerator 4, so as to achieve the reuse of the heat of the exhaust gas and start a new round of circulation.

[0068] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A solar-hydrogen-blended gas turbine power generation system, characterized in that: The invention comprises a gas turbine assembly and an electric control element (11), wherein the gas turbine assembly comprises a heat collector (1), a compressor (2), a turbine (3), a regenerator (4), a heat exchanger (5), and a combustion chamber (6); The output ends of the compressor (2) and the turbine (3) are both connected to the input end of the regenerator (4); the exhaust gas output by the turbine (3) exchanges heat with the compressed air output by the compressor (2) in the regenerator (4); after the heat exchange, the regenerator (4) discharges the exhaust gas and outputs the compressed air to the collector (1); The heat collector (1) heats the compressed air from the regenerator (4) by solar radiation heat exchange to obtain high-temperature and high-pressure gas. The high-temperature and high-pressure gas and liquid ammonia are respectively input into the heat exchanger (5) through the hot flow inlet and the cold flow inlet of the heat exchanger (5) and heat exchange occurs in the heat exchanger (5). The high-temperature and high-pressure gas after heat exchange and the gas generated by the cracking of the liquid ammonia are output to the combustion chamber (6) through the hot flow outlet and the cold flow outlet of the heat exchanger (5) and are burned together with the natural gas introduced into the combustion chamber (6). The output end of the combustion chamber (6) is connected to the input end of the turbine (3); The electric control element (11) is electrically connected to the gas turbine assembly and is used for electrically controlling the gas turbine assembly.

2. A hybrid solar-hydrogen-blended gas turbine power generation system according to claim 1, characterized in that: The temperature of the heat flow inlet of the heat exchanger (5) is 900°C-1200°C.

3. A hybrid solar-hydrogen-blended gas turbine power generation system according to claim 1, characterized in that: The temperature of the heat flow inlet of the heat exchanger (5) is 1000°C.

4. A hybrid solar-hydrogen-blended gas turbine power generation system according to claim 1, characterized in that: The liquid ammonia is cracked into nitrogen and hydrogen in the heat exchanger (5), and the nitrogen and hydrogen are output to the combustion chamber (6) through the cold flow outlet.

5. A hybrid solar-hydrogen-blended gas turbine power generation system according to claim 4, characterized in that: The hydrogen blending ratio of the natural gas / hydrogen mixed fuel in the combustion chamber (6) is 5%-20%.

6. A solar-hydrogen-blended gas turbine power generation system according to claim 4, characterized in that: The hydrogen blending ratio of the natural gas / hydrogen mixed fuel in the combustion chamber (6) is 10%.

7. A solar-hydrogen-blended gas turbine power generation system according to claim 1, characterized in that: The gas turbine assembly further comprises a liquid ammonia tank (7) and a pump (8). The liquid ammonia comes from the liquid ammonia tank (7), and the liquid ammonia is transported to the heat exchanger (5) under the action of the pump (8).

8. The hybrid solar-hydrogen-blended gas turbine power generation system according to claim 1, characterized in that: The gas turbine power generation system further comprises a photovoltaic array (9) and a storage battery (10), and the photovoltaic array (9), the storage battery (10) and the electric control element (11) are electrically connected to each other; The photovoltaic array (9) is used to convert light energy into electrical energy, a portion of which is used to power the electric control element (11), and the remaining portion is stored in the storage battery (10).

9. The hybrid solar-hydrogen-blended gas turbine power generation system according to claim 1, characterized in that: The gas turbine assembly is connected to a load (12), and the compressor (2) and the turbine (3) are connected to the load (12) via a shaft.

10. The method for using a hybrid solar-hydrogen-blended gas turbine power generation system as claimed in claim 1, characterized in that: Liquid ammonia is thermally cracked into nitrogen and hydrogen in the heat exchanger (5), and is burned together with natural gas and high-temperature and high-pressure gas in the combustion chamber (6). The exhaust gas generated by the combustion performs work in the turbine (3) and is then output to the regenerator (4). The exhaust gas is discharged after heat exchange with the compressed air in the compressor (2) in the regenerator (4). The compressed air is output to the collector (1) to absorb solar radiation heat to form high-temperature and high-pressure gas. The high-temperature and high-pressure gas then flows through the heat exchanger (5) to exchange heat with the liquid ammonia to cause the liquid ammonia to crack, and is then input to the combustion chamber (6) for circulation.

Images