A combined system of a steam turbine generator set and an ammonia-fired gas turbine with peak-scaling energy storage

Abstract

The present invention discloses a combined system of a steam turbine generator set and an ammonia-burning gas turbine capable of peak-shaving and energy storage, the system comprising: two outlets of the boiler are connected to the first and second inlets of a reaction chamber, the second outlet of the reaction chamber is connected to the inlet of a steam turbine high-pressure cylinder, the outlet of the steam turbine high-pressure cylinder is connected to the inlet of a condenser through a steam turbine low-pressure cylinder and a first heat exchanger respectively, and the outlet of the condenser is connected to the inlet of a boiler through a water pump and a first heat exchanger; two steam turbines generate electricity and transmit it to an electrolytic cell, the electrolytic cell is connected to the third inlet of the reaction chamber, the first outlet of the reaction chamber is connected to the inlet of an ammonia storage tank through an ammonia condenser; the outlet of the ammonia storage tank is connected to the first inlet of a combustion chamber through a liquid ammonia pump, the outlet of the compressor is connected to the second inlet of the combustion chamber through a second heat exchanger, the outlet of the combustion chamber is connected to the inlet of a gas turbine, and the outlet of the gas turbine is connected to a denitration tower through a second heat exchanger. The combined system provided by the present invention can improve the efficiency and safety of the unit, and flexibly realize peak-shaving and energy storage through ammonia storage and combustion.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy storage, and in particular relates to a combined system of a steam turbine generator set and an ammonia-fired gas turbine capable of peak-shaving energy storage. Background Art

[0002] When the user's electricity consumption is at the valley value, the output power demand of the thermal power station decreases. In order to match the power demand, the temperature and pressure at the air inlet of the steam turbine unit decreases. When the boiler outlet temperature is too low, the boiler circulation slows down, resulting in local overheating of the tube wall and safety hazards of uneven temperature. The low steam temperature at the boiler outlet will also reduce the boiler efficiency, and the overall unit operation deviates from the design conditions, resulting in a decrease in system operation efficiency. In order to ensure the safe and efficient operation of boiler components and steam turbines, it is necessary to maintain the boiler outlet temperature and pressure at the valley value of electricity consumption. When the electricity consumption is at the valley value, if the steam turbine generator set operates according to the design conditions, there is a surplus of electricity compared to the user's demand, and this part of the electricity can be converted into other forms to realize energy storage and peak-shaving functions. One of the storage energy storage methods currently used is hydrogen storage, but it requires a heavy pressure-resistant container, and there are unsafe factors such as easy leakage and container explosion, so its promotion is limited. When the electricity consumption is at the peak, the electricity consumption often exceeds the electricity that the steam turbine generator set can provide. The power generation of a single steam turbine generator set cannot match the electricity consumption, and it is necessary to cooperate with the peak-shaving generator set to meet the demand.

[0003] Therefore, the existing steam turbine and energy storage system still have the following design deficiencies:

[0004] Fluctuations in electricity consumption can cause the steam turbine to deviate from the design point. When electricity consumption is low, the steam turbine is required to operate at low power. At this time, the boiler outlet temperature decreases, resulting in reduced unit efficiency and safety hazards. When the power is high, a single steam turbine generator set is difficult to meet the user's power supply needs. Summary of the invention

[0005] The purpose of the present invention is to provide a combined system of a steam turbine generator set and an ammonia-fired gas turbine capable of peak-shaving and energy storage to solve the above-mentioned technical problems. The energy storage system designed by the present invention can achieve peak-shaving and energy storage more safely, ensure the efficient and safe operation of boiler pipeline components and steam turbine systems, and can achieve peak-shaving in combination with an ammonia-fired gas turbine system, further expand the scope of application of the system, and improve energy utilization and system safety.

[0006] In order to achieve the above object, the present invention adopts the following technical scheme:

[0007] A combined system of a steam turbine generator set and an ammonia-burning gas turbine capable of peak-scaling and energy storage, comprising a boiler, a steam turbine high-pressure cylinder, a steam turbine low-pressure cylinder, a first generator, a condenser, a water pump, a first heat exchanger, an electrolytic cell, a reaction chamber, an ammonia condenser, an ammonia storage tank, a liquid ammonia pump, a combustion chamber, a gas turbine, a compressor, a second generator, a transmission, a second heat exchanger and a denitration tower;

[0008] The first outlet of the boiler is connected to the first inlet of the reaction chamber, the second outlet of the boiler is connected to the second inlet of the reaction chamber, the second outlet of the reaction chamber is connected to the steam turbine high-pressure cylinder, the outlet of the steam turbine high-pressure cylinder is connected to the first inlet of the first heat exchanger, the first outlet of the first heat exchanger is connected to the condenser, the outlet of the steam turbine high-pressure cylinder is simultaneously connected to the steam turbine low-pressure cylinder, the steam turbine high-pressure cylinder and the steam turbine low-pressure cylinder are connected to the first generator, the outlet of the steam turbine low-pressure cylinder is connected to the condenser, the condenser is connected to the water pump, the water pump outlet is connected to the second inlet of the first heat exchanger, and the second outlet of the first heat exchanger is connected to the boiler;

[0009] The first generator generates electrical energy and transmits it to the electrolytic cell, the electrolytic cell is connected to the reaction chamber through the third inlet, the first outlet of the reaction chamber is connected to the ammonia condenser, and the ammonia condenser is connected to the ammonia storage tank;

[0010] The liquid ammonia pump of the ammonia storage tank is connected to the combustion chamber through the first inlet, other fuels are connected to the combustion chamber through the third inlet, the combustion chamber outlet is connected to the gas turbine, the air duct is connected to the compressor, the gas turbine and the compressor are connected to the second generator through the transmission to generate electricity; the gas turbine outlet is connected to the first inlet of the second heat exchanger, the first outlet of the second heat exchanger is connected to the denitrification tower, the compressor outlet is connected to the second inlet of the second heat exchanger, and the second outlet of the second heat exchanger is connected to the second inlet of the combustion chamber.

[0011] A further improvement of the present invention is that it further comprises a first control valve, and the first outlet of the boiler is connected to the first inlet of the reaction chamber via the first control valve.

[0012] A further improvement of the present invention is that it also includes a second control valve, and the ammonia storage tank is connected to the combustion chamber from the first inlet through the second control valve and the liquid ammonia pump.

[0013] A further improvement of the present invention is that it further comprises a third control valve, and the air is connected to the compressor via the third control valve.

[0014] A further improvement of the present invention is that, during operation, in the initial state, all control valves are in a closed state;

[0015] When the user is in the low electricity consumption period, the first control valve is opened, the second control valve and the third control valve remain closed, and part of the electric energy output by the first generator is connected to the electrolytic cell; the high-temperature steam in the boiler passes through the reaction chamber and enters the steam turbine high-pressure cylinder, pushing the steam turbine high-pressure cylinder to expand and do work, part of the steam flows through the steam turbine high-pressure cylinder and directly enters the steam turbine low-pressure cylinder to expand and do work, and part of the steam is connected to the second inlet of the first heat exchanger; the steam turbine high-pressure cylinder and the steam turbine low-pressure cylinder are connected to the first generator through the main shaft, and the mechanical energy is converted into electrical energy by driving the main shaft to rotate. The steam flowing out of the steam turbine low-pressure cylinder enters the condenser and is condensed into water. The water is pumped into the first inlet of the first heat exchanger by the water pump and extracted from the steam turbine high-pressure cylinder. The steam is heat exchanged, the preheated water flows into the boiler from the first outlet of the first heat exchanger, and the cooled steam flows into the condenser from the second outlet of the first heat exchanger; at this time, the power output of the steam turbine generator set is stable and higher than the power consumption of the user, and the surplus power is partially connected to the electrolytic cell through the first generator, and the surplus power is used to electrolyze to produce hydrogen; the hydrogen produced by electrolysis in the electrolytic cell enters the reaction chamber through the third inlet, and the nitrogen after the air in the boiler is fully burned enters the reaction chamber through the first inlet through the first control valve. After the high temperature and high pressure conditions provided by the steam entering the reaction chamber from the second inlet of the boiler, the mixed nitrogen and hydrogen react to produce ammonia, which is condensed into liquid ammonia after passing through the ammonia condenser and flows into the ammonia storage tank, and ammonia storage and energy storage are realized in the ammonia storage tank.

[0016] A further improvement of the present invention is that when the generator set is at its peak power consumption, the ammonia gas turbine system participates in peak load regulation, closes the first control valve, opens the second control valve and the third control valve, and cuts off the power transmission from the first generator to the electrolytic cell; the high-temperature steam drives the steam turbine high-pressure cylinder and the steam turbine low-pressure cylinder to expand and do work, driving the first generator to output power, and at this time all the power is output to the user; the liquid ammonia in the ammonia storage tank is pumped into the first inlet of the combustion chamber by the liquid ammonia pump through the second control valve, the compressed and preheated air enters the combustion chamber through the second inlet, and other fuels enter the combustion chamber through the third inlet, and the liquid ammonia, other fuels and high-pressure air are mixed in the combustion chamber. After fully mixed and burned in the combustion chamber, high-temperature and high-pressure combustion gas is obtained. The combustion gas flows from the combustion chamber into the gas turbine to drive the main shaft to rotate, and is connected to the compressor and the second generator through the transmission. The compressor compresses the air entering through the third control valve, and the second generator generates electricity for peak regulation of the steam turbine generator set; the gas flowing out of the gas turbine enters the first inlet of the second heat exchanger, and the compressed air flowing out of the compressor enters the second inlet of the second heat exchanger. The cooled gas passes through the first outlet of the second heat exchanger and enters the denitrification tower for exhaust gas treatment. The heated high-pressure air flows from the second outlet of the second heat exchanger into the second inlet of the combustion chamber to fully burn with the fuel.

[0017] A further improvement of the present invention is that the other fuels are natural gas, liquefied gas, biomass gas and hydrogen.

[0018] A further improvement of the present invention is that during the peak period of electricity consumption, the ammonia-fired gas turbine is operated to peak-shave the steam turbine generator set, and the stored liquid ammonia is burned and then outputs electricity through the operation of the ammonia-fired gas turbine. The amount of electricity generated in this process can meet the difference between the output electricity of the steam turbine generator set and the peak electricity consumption, thereby completing the peak-shaving function.

[0019] The present invention has at least the following beneficial technical effects:

[0020] The present invention sets up an ammonia synthesis process. When the electricity consumption is at a valley value, the ammonia synthesis process can enable the steam turbine system to maintain the designed operating conditions, ensure that the boiler components and the steam turbine components can operate in an efficient and safe state, improve the system safety, and ensure the stable and reliable operation of the system when the user's electricity consumption is at a valley value.

[0021] Furthermore, the present invention utilizes synthetic ammonia technology for energy storage, which can effectively store energy during the valley period of electricity consumption. Ammonia only needs to be pressurized to 0.7MPa-0.8MPa at room temperature to be liquefied, while the pressure of existing hydrogen storage tanks is usually 30MPa-70MPa. Compared with traditional hydrogen storage processes, ammonia energy storage requires lower pressure, simpler equipment, and is easier to implement, which can better ensure the safe operation of the ammonia energy storage process.

[0022] Furthermore, the present invention is combined with an ammonia-fired gas turbine system. When the electricity consumption peaks, the ammonia-fired gas turbine system participates in peak regulation, uses the stored liquid ammonia to release energy, and makes up for the difference between the electricity consumption and the power generation of the steam turbine generator set, thereby realizing flexible energy utilization and peak regulation functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art; obviously, the drawings described below are some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of a combined system of a steam turbine generator set and an ammonia-fired gas turbine capable of peak-shaving and energy storage according to an embodiment of the present invention;

[0025] Description of reference numerals:

[0026] 1. Boiler; 2. Steam turbine high-pressure cylinder; 3. Steam turbine low-pressure cylinder; 4. First generator; 5. Condenser; 6. Water pump; 7. First heat exchanger; 8. Electrolytic cell; 9. Reaction chamber; 10. Ammonia condenser; 11. Ammonia storage tank; 12. Liquid ammonia pump; 13. Combustion chamber; 14. Gas turbine; 15. Compressor; 16. Second generator; 17. Transmission; 18. Second heat exchanger; 19. Denitrification tower.

[0027] 101, first control valve; 102, second control valve; 103, third control valve. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical effect and technical solution of the embodiment of the present invention clearer, the technical solution in the embodiment of the present invention is clearly and completely described below in conjunction with the drawings in the embodiment of the present invention; it is obvious that the described embodiment is a part of the embodiment of the present invention. Based on the embodiment disclosed in the present invention, other embodiments obtained by ordinary technicians in this field without making creative work should all fall within the scope of protection of the present invention.

[0029] See also Figure 1 A combined system of a steam turbine generator set and an ammonia-fired gas turbine with peak-adjustable energy storage according to an embodiment of the present invention includes a boiler 1, a steam turbine high-pressure cylinder 2, a steam turbine low-pressure cylinder 3, a first generator 4, a condenser 5, a water pump 6, a first heat exchanger 7, an electrolytic cell 8, a reaction chamber 9, an ammonia condenser 10, an ammonia storage tank 11, a liquid ammonia pump 12, a combustion chamber 13, a gas turbine 14, a compressor 15, a second generator 16, a transmission 17, a second heat exchanger 18, a denitration tower 19, a first control valve 101, a second control valve 102, and a third control valve 103.

[0030] The first outlet of the boiler 1 is connected to the first inlet of the reaction chamber 9 via the first control valve 101, the second outlet of the boiler 1 is connected to the second inlet of the reaction chamber 9, the second outlet of the reaction chamber 9 is connected to the steam turbine high-pressure cylinder 2, the outlet of the steam turbine high-pressure cylinder 2 is connected to the first inlet of the first heat exchanger 7, the first outlet of the first heat exchanger 7 is connected to the condenser 5, the outlet of the steam turbine high-pressure cylinder 2 is simultaneously connected to the steam turbine low-pressure cylinder 3, the steam turbine high-pressure cylinder 2 and the steam turbine low-pressure cylinder 3 are connected to the first generator 4, the outlet of the steam turbine low-pressure cylinder 3 is connected to the condenser 5, the condenser 5 is connected to the water pump 6, the outlet of the water pump 6 is connected to the second inlet of the first heat exchanger 7, and the second outlet of the first heat exchanger 7 is connected to the boiler 1.

[0031] The first generator 4 generates electric energy and transmits it to the electrolytic cell 8. The electrolytic cell 8 is connected to the reaction chamber 9 through the third inlet. The first outlet of the reaction chamber 9 is connected to the ammonia condenser 10. The ammonia condenser 10 is connected to the ammonia storage tank 11.

[0032] The ammonia storage tank 11 is connected to the combustion chamber 13 from the first inlet through the second control valve 102 and the liquid ammonia pump 12, and other fuels are connected to the combustion chamber 13 through the third inlet. The outlet of the combustion chamber 13 is connected to the gas turbine 14, and the air is connected to the compressor 15 through the third control valve 103. The gas turbine 14 and the compressor 15 are connected to the second generator 16 through the transmission 17 to generate electricity. The outlet of the gas turbine 14 is connected to the first inlet of the second heat exchanger 18, and the first outlet of the second heat exchanger 18 is connected to the denitration tower 19. The outlet of the compressor 15 is connected to the second inlet of the second heat exchanger 18, and the second outlet of the second heat exchanger 18 is connected to the second inlet of the combustion chamber 13.

[0033] The embodiment of the present invention provides a combined system of a steam turbine generator set and an ammonia-fired gas turbine with peak-shaving and energy storage, which can improve the operating safety of the boiler and ensure the overall efficiency of the steam turbine set, and realize the comprehensive utilization of energy and the functions of peak-shaving and energy storage. Specifically, the present invention introduces an ammonia production process to ensure the output power and efficiency of the steam turbine generator set. At the same time, the high-power output also keeps the boiler outlet temperature stable, thereby ensuring the safe operation of the boiler components; the present invention realizes energy storage by producing and storing ammonia. Compared with the traditional hydrogen storage energy storage method, this method requires lower equipment pressure, simpler structure, and higher energy storage safety; the present invention realizes the peak-shaving function through the operation of the ammonia-fired gas turbine system. When the user's electricity consumption peaks, the energy release of the ammonia storage energy is used to peak the steam turbine generator set to meet the demand for electricity that exceeds the steam turbine generator set.

[0034] A combined system of a steam turbine generator set and an ammonia-fired gas turbine capable of peak-shaving and energy storage according to an embodiment of the present invention comprises the following steps during operation:

[0035] In the initial state, all control valves are in the closed state.

[0036] When the user is in the low electricity consumption valley, the first control valve 101 is opened, the second control valve 102 and the third control valve 103 remain closed, and the power output of the first generator 4 is partially connected to the electrolytic cell 8. The high-temperature steam in the boiler 1 passes through the reaction chamber 9 and enters the steam turbine high-pressure cylinder 2, pushing the steam turbine high-pressure cylinder 2 to expand and do work. Part of the steam flows through the steam turbine high-pressure cylinder 2 and directly enters the steam turbine low-pressure cylinder 3 to expand and do work, and part of the steam is connected to the second inlet of the first heat exchanger 7. The steam turbine high-pressure cylinder 2 and the steam turbine low-pressure cylinder 3 are connected to the first generator 4 through the main shaft, and the mechanical energy is converted into electrical energy by driving the main shaft to rotate. The steam flowing out of the steam turbine low-pressure cylinder 3 enters the condenser 5 and is condensed into water. The water is pumped into the first inlet of the first heat exchanger 7 by the water pump 6, and heat is exchanged with the steam extracted from the steam turbine high-pressure cylinder 2. The preheated water flows into the boiler 1 from the first outlet of the first heat exchanger 7, and the cooled steam flows into the condenser 5 from the second outlet of the first heat exchanger 7. At this time, the power output of the steam turbine generator set is stable and significantly higher than the power consumption of the user. The surplus power generation can be connected to the electrolytic cell 8 through the first generator 4, and the surplus power can be used to electrolyze and produce hydrogen. The hydrogen produced by electrolysis in the electrolytic cell 8 enters the reaction chamber 9 through the third inlet, and the nitrogen after the air in the boiler 1 is fully burned enters the reaction chamber 9 through the first inlet through the first control valve 101. After the high temperature and high pressure conditions provided by the steam entering the reaction chamber 9 from the second inlet of the boiler 1, the mixed nitrogen and hydrogen react to produce ammonia. The ammonia passes through the ammonia condenser 10 and is condensed into liquid ammonia and flows into the ammonia storage tank 11, and ammonia storage and energy storage are realized in the ammonia storage tank 11.

[0037] When the generator set is at the peak of electricity consumption, the ammonia gas turbine system participates in peak regulation, closes the first control valve 101, opens the second control valve 102 and the third control valve 103, and cuts off the power transmission from the first generator 4 to the electrolytic cell 8. The operation mode of the steam turbine generator set remains similar to that of the valley of electricity consumption. The high-temperature steam still drives the steam turbine high-pressure cylinder 2 and the steam turbine low-pressure cylinder 3 to expand and work, driving the first generator 4 to output electricity. At this time, all electricity is output to the user, and part of the electricity is no longer connected to the electrolytic cell 8. The liquid ammonia in the ammonia storage tank 11 is pumped into the first inlet of the combustion chamber 13 by the liquid ammonia pump 12 through the second control valve 102, and the compressed and preheated air enters the combustion chamber 13 through the second inlet. Other fuels such as methane enter the combustion chamber 13 through the third inlet. The liquid ammonia, other fuels and high-pressure air are fully mixed and burned in the combustion chamber 14 to obtain high-temperature and high-pressure gas. The gas flows from the combustion chamber 13 into the gas turbine 14 to drive the main shaft to rotate, and is connected to the compressor 15 and the second generator 16 through the transmission 17. The compressor 15 compresses the air entering through the third control valve 103, and the second generator 16 generates electricity for peak load regulation of the steam turbine generator set. The gas flowing out of the gas turbine 14 enters the first inlet of the second heat exchanger 18, and the compressed air flowing out of the compressor 15 enters the second inlet of the second heat exchanger 18. The cooled gas passes through the first outlet of the second heat exchanger 18 and enters the denitrification tower 19 for tail gas treatment. The heated high-pressure air flows from the second outlet of the second heat exchanger 18 into the second inlet of the combustion chamber 13 to fully burn with the fuel. During the peak period of electricity consumption, the operation of the ammonia-fired gas turbine regulates the peak load of the steam turbine generator set. After the stored liquid ammonia is burned, the ammonia-fired gas turbine operates to output electricity. The electricity generated in this process can meet the difference between the output power of the steam turbine generator set and the peak power consumption, thus completing the peak load regulation function.

[0038] The present invention can achieve the following: utilizing the low-peak electricity to store ammonia energy to ensure efficient and safe operation of the boiler and turbine unit; during peak electricity consumption, the ammonia-fired gas turbine system participates in peak-shaving, and the liquid ammonia energy is released through the ammonia-fired gas turbine system to output electrical energy, thereby flexibly realizing the peak-shaving function and making the system operate stably and reliably.

[0039] In summary, the present invention provides a combined system of a steam turbine generator set and an ammonia-fired gas turbine with peak-shaving and energy storage, which can ensure the safe and efficient operation of boiler and turbine unit components, store and release energy in a safer way, and thus achieve flexible peak-shaving and energy storage, improve the system's applicability, and ensure the system's safety and stability. Specific advantages include: (1) The present invention sets up an ammonia production process, which can effectively store electricity at valley values, and thereby ensure that the turbine unit and boiler components operate at designed conditions and maintain their high efficiency and reliability. (2) The present invention uses ammonia energy storage to replace traditional hydrogen energy storage systems, significantly reducing the pressure and equipment complexity required for the energy storage device, and improving the safety performance of the energy storage components. (3) The present invention uses an ammonia energy storage device in combination with an ammonia-fired gas turbine system to store and release energy, achieving flexible peak-shaving functions to match peak electricity consumption, further expanding the scope of application of the system, improving the system's energy utilization, and ensuring system stability.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art can still modify or make equivalent substitutions to the specific implementations of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention are within the scope of protection of the claims of the present invention to be approved.

Claims

1. A combined system of a steam turbine generator set and an ammonia-fired gas turbine capable of peak-shaving and energy storage, characterized in that: It includes a boiler, a steam turbine high-pressure cylinder, a steam turbine low-pressure cylinder, a first generator, a condenser, a water pump, a first heat exchanger, an electrolytic cell, a reaction chamber, an ammonia condenser, an ammonia storage tank, a liquid ammonia pump, a combustion chamber, a gas turbine, a compressor, a second generator, a transmission, a second heat exchanger and a denitration tower; The first outlet of the boiler is connected to the first inlet of the reaction chamber, the second outlet of the boiler is connected to the second inlet of the reaction chamber, the second outlet of the reaction chamber is connected to the steam turbine high-pressure cylinder, the outlet of the steam turbine high-pressure cylinder is connected to the first inlet of the first heat exchanger, the first outlet of the first heat exchanger is connected to the condenser, the outlet of the steam turbine high-pressure cylinder is simultaneously connected to the steam turbine low-pressure cylinder, the steam turbine high-pressure cylinder and the steam turbine low-pressure cylinder are connected to the first generator, the outlet of the steam turbine low-pressure cylinder is connected to the condenser, the condenser is connected to the water pump, the water pump outlet is connected to the second inlet of the first heat exchanger, and the second outlet of the first heat exchanger is connected to the boiler; The first generator generates electrical energy and transmits it to the electrolytic cell, the electrolytic cell is connected to the reaction chamber through the third inlet, the first outlet of the reaction chamber is connected to the ammonia condenser, and the ammonia condenser is connected to the ammonia storage tank; The liquid ammonia pump of the ammonia storage tank is connected to the combustion chamber through the first inlet, other fuels are connected to the combustion chamber through the third inlet, the combustion chamber outlet is connected to the gas turbine, the air duct is connected to the compressor, the gas turbine and the compressor are connected to the second generator through the transmission to generate electricity; the gas turbine outlet is connected to the first inlet of the second heat exchanger, the first outlet of the second heat exchanger is connected to the denitrification tower, the compressor outlet is connected to the second inlet of the second heat exchanger, and the second outlet of the second heat exchanger is connected to the second inlet of the combustion chamber.

2. The combined system of a steam turbine generator set and an ammonia-fired gas turbine capable of peak-shaving and energy storage according to claim 1 is characterized in that: The boiler further comprises a first control valve, wherein the first outlet of the boiler is connected to the first inlet of the reaction chamber via the first control valve.

3. The combined system of a steam turbine generator set and an ammonia-fired gas turbine capable of peak-shaving and energy storage according to claim 2 is characterized in that: It also includes a second control valve, and the ammonia storage tank is connected to the combustion chamber from the first inlet through the second control valve and the liquid ammonia pump.

4. The combined system of a steam turbine generator set and an ammonia-fired gas turbine capable of peak-shaving and energy storage according to claim 3 is characterized in that: A third control valve is also included, through which air is connected to the compressor.

5. The combined system of a steam turbine generator set and an ammonia-fired gas turbine capable of peak-shaving and energy storage according to claim 4 is characterized in that: When working, in the initial state, all control valves are in the closed state; When the user is in the low electricity consumption period, the first control valve is opened, the second control valve and the third control valve remain closed, and part of the electric energy output by the first generator is connected to the electrolytic cell; the high-temperature steam in the boiler passes through the reaction chamber and enters the steam turbine high-pressure cylinder, pushing the steam turbine high-pressure cylinder to expand and do work, part of the steam flows through the steam turbine high-pressure cylinder and directly enters the steam turbine low-pressure cylinder to expand and do work, and part of the steam is connected to the second inlet of the first heat exchanger; the steam turbine high-pressure cylinder and the steam turbine low-pressure cylinder are connected to the first generator through the main shaft, and the mechanical energy is converted into electrical energy by driving the main shaft to rotate. The steam flowing out of the steam turbine low-pressure cylinder enters the condenser and is condensed into water. The water is pumped into the first inlet of the first heat exchanger by the water pump and extracted from the steam turbine high-pressure cylinder. The steam is heat exchanged, the preheated water flows into the boiler from the first outlet of the first heat exchanger, and the cooled steam flows into the condenser from the second outlet of the first heat exchanger; at this time, the power output of the steam turbine generator set is stable and higher than the power consumption of the user, and the surplus power is partially connected to the electrolytic cell through the first generator, and the surplus power is used to electrolyze to produce hydrogen; the hydrogen produced by electrolysis in the electrolytic cell enters the reaction chamber through the third inlet, and the nitrogen after the air in the boiler is fully burned enters the reaction chamber through the first inlet through the first control valve. After the high temperature and high pressure conditions provided by the steam entering the reaction chamber from the second inlet of the boiler, the mixed nitrogen and hydrogen react to produce ammonia, which is condensed into liquid ammonia after passing through the ammonia condenser and flows into the ammonia storage tank, and ammonia storage and energy storage are realized in the ammonia storage tank.

6. The combined system of a steam turbine generator set and an ammonia-fired gas turbine capable of peak-shaving and energy storage according to claim 5 is characterized in that: When the generator set is at its peak power consumption, the ammonia gas turbine system participates in peak load regulation, closes the first control valve, opens the second control valve and the third control valve, and cuts off the power transmission from the first generator to the electrolytic cell; the high-temperature steam drives the steam turbine high-pressure cylinder and the steam turbine low-pressure cylinder to expand and do work, driving the first generator to output power. At this time, all power is output to the user; the liquid ammonia in the ammonia storage tank is pumped into the first inlet of the combustion chamber through the second control valve by the liquid ammonia pump, the compressed and preheated air enters the combustion chamber through the second inlet, and other fuels enter the combustion chamber through the third inlet, and the liquid ammonia, other fuels and high-pressure air are fully mixed in the combustion chamber. After the combined combustion, high-temperature and high-pressure fuel gas is obtained. The fuel gas flows from the combustion chamber into the gas turbine to drive the main shaft to rotate, and is connected to the compressor and the second generator through the transmission. The compressor compresses the air entering through the third control valve, and the second generator generates electricity for peak regulation of the steam turbine generator set; the fuel gas flowing out of the gas turbine enters the first inlet of the second heat exchanger, and the compressed air flowing out of the compressor enters the second inlet of the second heat exchanger. The cooled fuel gas passes through the first outlet of the second heat exchanger and enters the denitrification tower for exhaust gas treatment. The heated high-pressure air flows from the second outlet of the second heat exchanger into the second inlet of the combustion chamber to fully burn with the fuel.

7. A combined system of a steam turbine generator set and an ammonia-fired gas turbine capable of peak-shaving and energy storage according to claim 6, characterized in that: Other fuels are natural gas, liquefied gas, biogas and hydrogen.

8. The combined system of a steam turbine generator set and an ammonia-fired gas turbine capable of peak-shaving and energy storage according to claim 6 is characterized in that: During peak electricity consumption, the ammonia-fired gas turbine operates to peak-shave the steam turbine generator set. The stored liquid ammonia is burned and then outputs electricity through the ammonia-fired gas turbine. The amount of electricity generated in this process can meet the difference between the output of the steam turbine generator set and the peak electricity consumption, thus completing the peak-shaving function.

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