CN115163306A - Turbo generator set and burning ammonia gas turbine combined system of adjustable peak energy storage - Google Patents

Turbo generator set and burning ammonia gas turbine combined system of adjustable peak energy storage Download PDF

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Publication number
CN115163306A
CN115163306A CN202210860190.9A CN202210860190A CN115163306A CN 115163306 A CN115163306 A CN 115163306A CN 202210860190 A CN202210860190 A CN 202210860190A CN 115163306 A CN115163306 A CN 115163306A
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ammonia
inlet
outlet
steam turbine
heat exchanger
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张荻
王培宇
孙磊
谢永慧
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Xian Jiaotong University
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Xian Jiaotong University
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/02—Preparation, purification or separation of ammonia
    • C01C1/04—Preparation of ammonia by synthesis in the gas phase
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/02—Hydrogen or oxygen
    • C25B1/04—Hydrogen or oxygen by electrolysis of water
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/60—Constructional parts of cells
    • C25B9/65—Means for supplying current; Electrode connections; Electric inter-cell connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/10—Adaptations for driving, or combinations with, electric generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
    • F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
    • F01K7/38—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating the engines being of turbine type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
    • F02C3/20—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/08—Heating air supply before combustion, e.g. by exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0228—Coupling of the liquefaction unit to other units or processes, so-called integrated processes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J15/00—Systems for storing electric energy
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J15/00—Systems for storing electric energy
    • H02J15/008—Systems for storing electric energy using hydrogen as energy vector

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Organic Chemistry (AREA)
  • Power Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

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

Description

Turbo generator set and burning ammonia gas turbine combined system of adjustable peak energy storage
Technical Field
The invention belongs to the technical field of energy storage, and particularly relates to a turbo generator set and ammonia-fired gas turbine combined system capable of adjusting peak energy storage.
Background
When user's power consumption valley value, thermal power station output electric quantity demand reduces, in order to match with the electric quantity demand, turbine unit inlet end temperature pressure descends. When the temperature at the outlet of the boiler is too low, the circulation of the boiler is slowed down, so that the potential safety hazard of local overheating and uneven temperature of the pipe wall is caused. Too low also can lead to boiler efficiency to reduce of boiler outlet steam temperature, and the skew design operating mode of whole unit operation causes the system operating efficiency to descend. In order to ensure the safe and efficient operation of the boiler components and the steam turbine, it is necessary to maintain the temperature and the pressure of the outlet of the boiler during the valley value of the power consumption. When the power consumption valley value is reached, if the steam turbine generator unit operates according to the design working condition, the power consumption is more abundant than the power consumption required by a user, and the part of the power can be converted into other forms to realize the energy storage and peak regulation functions. One storage energy storage method used at present is hydrogen storage energy storage, however, a thick and heavy pressure-resistant container is required, and unsafe factors such as easy leakage and container explosion exist, so that the implementation is limited. When being in the power consumption peak value, the power consumption often surpasss turbo generator set and can provide the electric quantity, and single turbo generator set generated energy can't match with the power consumption, needs the cooperation peak shaver generating set in order to satisfy the demand.
Therefore, the existing steam turbine and energy storage system still have the following design defects:
the condition that the steam turbine deviates from a design point due to fluctuation of electric quantity is caused, when the electric quantity is low, the steam turbine is required to operate at low power, and at the moment, the temperature of the outlet of a boiler is reduced, so that the efficiency of a unit is reduced and potential safety hazards exist; when the power is high, the single steam turbine generator unit is difficult to meet the power supply requirement of a user.
Disclosure of Invention
The invention aims to provide a combined system of a turbo generator unit with adjustable peak energy storage and an ammonia-fired gas turbine, so as to solve the technical problems. The energy storage system designed by the invention can more safely realize peak shaving energy storage, ensure the efficient and safe operation of boiler pipeline components and a steam turbine system, realize peak shaving by combining an ammonia-fired gas turbine system, further expand the application range of the system and improve the energy utilization rate and the system safety.
In order to achieve the purpose, the invention adopts the following technical scheme:
a turbo generator set and ammonia-burning gas turbine combined system capable of adjusting peak energy storage comprises 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;
a first outlet of the boiler is connected to a first inlet of the reaction chamber, a second outlet of the boiler is connected to a second inlet of the reaction chamber, a second outlet of the reaction chamber is connected to a steam turbine high-pressure cylinder, an outlet of the steam turbine high-pressure cylinder is connected with a first inlet of a first heat exchanger, a first outlet of the first heat exchanger is connected to a condenser, an outlet of the steam turbine high-pressure cylinder is simultaneously connected to a steam turbine low-pressure cylinder, the steam turbine high-pressure cylinder and the steam turbine low-pressure cylinder are connected to a first generator, an outlet of the steam turbine low-pressure cylinder is connected with the condenser, the condenser is connected with a water pump, an outlet of the water pump is connected to a second inlet of the first heat exchanger, and a second outlet of the first heat exchanger is connected to the boiler;
the first generator generates electric energy to be transmitted to the electrolytic cell, the electrolytic cell is connected to the reaction chamber from the third inlet, the first outlet of the reaction chamber is connected with 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 a first inlet, other fuels are connected to the combustion chamber through a third inlet, an outlet of the combustion chamber is connected to the gas turbine, the air passage is connected to the compressor, and the gas turbine and the compressor are connected to a second generator through a transmission to realize power generation; the outlet of the gas turbine is connected to the first inlet of the second heat exchanger, the first outlet of the second heat exchanger is connected to the denitration tower, the outlet of the compressor is connected to the second inlet of the second heat exchanger, and the second outlet of the second heat exchanger is connected with the second inlet of the combustion chamber.
A further development of the invention is that it also comprises a first control valve, via which the first outlet of the boiler is connected to the first inlet of the reaction chamber.
The invention further improves the method and the device, and further comprises a second control valve, wherein the ammonia storage tank is connected to the combustion chamber from the first inlet through the second control valve and the liquid ammonia pump.
A further development of the invention is that it also comprises a third control valve, through which the air is connected to the compressor.
The invention has the further improvement that when in work, all the control valves are in a closed state in an initial state;
when a user is in a low ebb of electricity, the first control valve is opened, the second control valve and the third control valve are kept closed, and the part of the electric energy output by the first generator is communicated with the electrolytic cell; high-temperature steam in the boiler enters the steam turbine high-pressure cylinder after passing through the reaction chamber to push the steam turbine high-pressure cylinder to expand and do work, part of the steam directly enters the steam turbine low-pressure cylinder to expand and do work after flowing through the steam turbine high-pressure cylinder, and part of the steam is connected to a second inlet of the first heat exchanger; the steam turbine high-pressure cylinder and the steam turbine low-pressure cylinder are connected to a first generator through a main shaft, mechanical energy is converted into electric energy by driving the main shaft to rotate, steam flowing out of the steam turbine low-pressure cylinder enters a condenser and is condensed into water, the water is pumped into a first inlet of a first heat exchanger through a water pump and exchanges heat with the steam extracted from the steam turbine high-pressure cylinder, the preheated water flows into a boiler through a first outlet of the first heat exchanger, and the cooled steam flows into the condenser through a second outlet of the first heat exchanger; at the moment, the power output of the steam turbine generator unit is stable and is higher than the electricity consumption of a user, part of electricity is communicated to an electrolytic cell through a first generator by the surplus electricity, and hydrogen is prepared by the surplus electricity through electrolysis; the electrolytic cell electrolyzes to obtain hydrogen, the hydrogen enters the reaction chamber through the third inlet, the nitrogen which is fully combusted in the boiler enters the reaction chamber through the first control valve from the first inlet, the mixed nitrogen and hydrogen react to obtain ammonia gas after the high-temperature and high-pressure conditions provided by the steam which enters the reaction chamber through the second inlet and passes through the boiler, the ammonia gas is condensed into liquid ammonia after passing through the ammonia condenser and flows into the ammonia storage tank, and the ammonia storage energy storage is realized in the ammonia storage tank.
The invention has the further improvement that when the generator set is at the peak value of electricity utilization, the ammonia-fired gas turbine system participates in peak shaving, the first control valve is closed, the second control valve and the third control valve are opened, and the electric energy transmission from the first generator to the electrolytic cell is cut off; the high-temperature steam pushes the steam turbine high-pressure cylinder and the steam turbine low-pressure cylinder to expand and do work, so that the first generator is driven to output electric energy, and all the electric energy is output to a user; liquid ammonia in the ammonia storage tank is pumped into a first inlet of the combustion chamber by a liquid ammonia pump through a second control valve, air which is preheated by compression enters the combustion chamber through a second inlet, other fuels enter the combustion chamber through a third inlet, the liquid ammonia, the other fuels and high-pressure air are fully mixed and combusted in the combustion chamber to obtain high-temperature and high-pressure gas, the gas flows into a gas turbine from the combustion chamber to drive a main shaft to rotate and is connected to a compressor and a second generator through a transmission, the compressor compresses the air entering from a third control valve, and the second generator generates electricity to be used for carrying out peak regulation on a turbo-generator set; and the gas flowing out of the gas turbine enters a first inlet of the second heat exchanger, the compressed air flowing out of the compressor enters a second inlet of the second heat exchanger, the cooled gas enters the denitration tower through a first outlet of the second heat exchanger for tail gas treatment, and the heated high-pressure air flows into a second inlet of the combustion chamber from a second outlet of the second heat exchanger to be fully combusted with the fuel.
A further improvement of the invention is that the other fuels are natural gas, liquefied gas, biomass gas and hydrogen.
The invention has the further improvement that during the peak period of power consumption, the operation of the ammonia-burning gas turbine adjusts the peak of the turbo-generator set, the stored liquid ammonia is combusted and then the stored liquid ammonia is operated to output electric energy through the ammonia-burning gas turbine, and the electric energy generated in the process can meet the difference between the output electric energy of the turbo-generator set and the peak value of the power consumption, thereby completing the realization of the peak adjusting function.
The invention has at least the following beneficial technical effects:
the invention sets the synthetic ammonia process, when the electricity consumption valley value is used, the synthetic ammonia process can enable the steam turbine system to maintain the design working condition, ensure that the boiler part and the steam turbine part can operate in an efficient and safe state, improve the safety of the system and ensure the stable and reliable operation of the system when the electricity consumption valley value is used by a user.
Furthermore, the invention utilizes the synthetic ammonia technology to store energy, can effectively store the energy when the power consumption is at the valley value, the ammonia can be liquefied only by pressurizing to 0.7MPa-0.8MPa at normal temperature, the pressure of the existing hydrogen storage tank is usually 30MPa-70MPa, the pressure required by the ammonia storage and energy storage process is lower than that of the traditional hydrogen storage and energy storage process, the equipment is simpler and easier to realize, and the safe operation of the ammonia storage and energy storage process can be better ensured.
Furthermore, the invention combines an ammonia combustion gas turbine system, when the power consumption is at the peak value, the ammonia combustion gas turbine system participates in peak regulation, the stored liquid ammonia is utilized to release energy, the difference between the power consumption and the generating capacity of the steam turbine generator unit is complemented, and the flexible energy utilization and peak regulation functions are realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art are briefly introduced below; it is obvious that the drawings in the following description are some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic diagram of a combined system of a turbo unit and an ammonia-fired gas turbine with adjustable peak energy storage according to an embodiment of the present invention;
description of reference numerals:
1. a boiler; 2. a steam turbine high pressure cylinder; 3. a steam turbine low pressure cylinder; 4. a first generator; 5. a condenser; 6. a water pump; 7. a first heat exchanger; 8. an electrolytic cell; 9. a reaction chamber; 10. an ammonia condenser; 11. an ammonia storage tank; 12. a liquid ammonia pump; 13. a combustion chamber; 14. a gas turbine; 15. a compressor; 16. a second generator; 17. a transmission; 18. a second heat exchanger; 19. a denitration tower.
101. A first control valve; 102. a second control valve; 103. and a third control valve.
Detailed Description
In order to make the purpose, technical effect and technical solution of the embodiments of the present invention clearer, the following clearly and completely describes the technical solution of the embodiments of the present invention with reference to the drawings in the embodiments of the present invention; it is to be understood that the described embodiments are only some of the embodiments of the present invention. Other embodiments, which can be derived by one of ordinary skill in the art from the disclosed embodiments without inventive faculty, are intended to be within the scope of the invention.
Referring to fig. 1, a turbo generator set and ammonia-fired gas turbine combined system 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.
A first outlet of the boiler 1 is connected to a first inlet of the reaction chamber 9 through a first control valve 101, a second outlet of the boiler 1 is connected to a second inlet of the reaction chamber 9, a second outlet of the reaction chamber 9 is connected to the steam turbine high pressure cylinder 2, an outlet of the steam turbine high pressure cylinder 2 is connected to a first inlet of a first heat exchanger 7, a first outlet of the first heat exchanger 7 is connected to a condenser 5, an 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 a first generator 4, an outlet of the steam turbine low pressure cylinder 3 is connected to the condenser 5, the condenser 5 is connected to a water pump 6, an outlet of the water pump 6 is connected to a second inlet of the first heat exchanger 7, and a second outlet of the first heat exchanger 7 is connected to the boiler 1.
The first generator 4 generates electric energy and transmits the electric energy to the electrolytic cell 8, the electrolytic cell 8 is connected to the reaction chamber 9 from the third inlet, the first outlet of the reaction chamber 9 is connected with the ammonia condenser 10, and the ammonia condenser 10 is connected to the ammonia storage tank 11;
the ammonia storage tank 11 is connected to the combustion chamber 13 through a first inlet by a second control valve 102 and a liquid ammonia pump 12, other fuel is connected to the combustion chamber 13 through a third inlet, an outlet of the combustion chamber 13 is connected to a gas turbine 14, air is connected to a compressor 15 through a third control valve 103, and the gas turbine 14 and the compressor 15 are connected to a second generator 16 through a transmission 17 to realize power generation. The outlet of the gas turbine 14 is connected to a first inlet of a second heat exchanger 18, a first outlet of the second heat exchanger 18 is connected to a denitration tower 19, the outlet of the compressor 15 is connected to a second inlet of the second heat exchanger 18, and a second outlet of the second heat exchanger 18 is connected to a second inlet of the combustion chamber 13.
The steam turbine generator unit and the ammonia-fired gas turbine combined system capable of adjusting peak energy storage provided by the embodiment of the invention can improve the operation safety of a boiler, ensure the overall efficiency of the steam turbine generator unit and realize the functions of comprehensive utilization of energy and peak energy storage. The invention particularly ensures the output power and efficiency of the steam turbine generator unit by introducing the ammonia production process, and simultaneously ensures the temperature of the boiler outlet to be kept stable by high power output, thereby ensuring the safe operation of boiler parts; the invention realizes energy storage by ammonia preparation and storage, and compared with the traditional hydrogen storage mode, the mode needs lower equipment pressure, simpler structure and higher energy storage safety; the invention realizes the peak regulation function through the operation of the ammonia-fired gas turbine system, and utilizes the energy released by stored ammonia energy to regulate the peak of the turbo generator set when the power consumption of a user is at the peak value, thereby meeting the requirement of exceeding the power supply of the turbo generator set.
The turbo generator set and ammonia-fired gas turbine combined system capable of adjusting peak energy storage provided by the embodiment of the invention comprises the following steps of:
in the initial state, all control valves are in the closed state.
When the user is in a low valley of electricity, the first control valve 101 is opened, the second control valve 102 and the third control valve 103 are kept closed, and the part of the electric energy output by the first generator 4 is connected to the electrolytic cell 8. High-temperature steam in the boiler 1 enters the steam turbine high-pressure cylinder 2 after passing through the reaction chamber 9 to push the steam turbine high-pressure cylinder 2 to expand and do work, part of the steam directly enters the steam turbine low-pressure cylinder 3 to expand and do work after flowing through the steam turbine high-pressure cylinder 2, and part of the steam is connected to a 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 a first generator 4 through a main shaft, mechanical energy is converted into electric energy by driving the main shaft to rotate, steam flowing out of the steam turbine low-pressure cylinder 3 enters a condenser 5 and is condensed into water, the water is pumped into a first inlet of a first heat exchanger 7 through a water pump 6 and exchanges heat with steam extracted from the steam turbine high-pressure cylinder 2, the preheated water flows into the boiler 1 through a first outlet of the first heat exchanger 7, and the cooled steam flows into the condenser 5 through a second outlet of the first heat exchanger 7. At the moment, the power output of the steam turbine generator unit is stable and is obviously higher than the power consumption of a user, and the surplus generated energy can be used for communicating part of the electric quantity to the electrolytic cell 8 through the first generator 4 and electrolyzing the surplus electric quantity to prepare hydrogen. The electrolytic cell 8 is electrolyzed to obtain hydrogen which enters the reaction chamber 9 through the third inlet, nitrogen which is fully combusted in the boiler 1 enters the reaction chamber 9 through the first inlet through the first control valve 101, the mixed nitrogen and hydrogen react to obtain ammonia gas after passing through the boiler 1 under the high-temperature and high-pressure condition provided by steam which enters the reaction chamber 9 through the second inlet, the ammonia gas is condensed into liquid ammonia after passing through the ammonia condenser 10 and flows into the ammonia storage tank 11, and ammonia storage and energy storage are realized in the ammonia storage tank 11.
When the power generating set is at the peak value of power utilization, the ammonia-burning gas turbine system participates in peak shaving, the first control valve 101 is closed, the second control valve 102 and the third control valve 103 are opened, and the electric energy transmission from the first power generator 4 to the electrolytic cell 8 is cut off. The operation mode of the steam turbine generator unit is similar to that of the power consumption valley, the high-temperature steam pushes the steam turbine high-pressure cylinder 2 and the steam turbine low-pressure cylinder 3 to expand and do work, the first generator 4 is driven to output electric energy, all the electric energy is output to a user at the moment, and part of the electric energy is not communicated to the electrolytic cell 8. Liquid ammonia in the ammonia storage tank 11 is pumped into a first inlet of the combustion chamber 13 through the second control valve 102 by the liquid ammonia pump 12, air which is compressed and preheated enters the combustion chamber 13 through a second inlet, other fuels such as methane and the like enter the combustion chamber 13 through a third inlet, and the liquid ammonia, the other fuels and high-pressure air are fully mixed and combusted in the combustion chamber 14 to obtain high-temperature and high-pressure fuel gas. The gas flows into the gas turbine 14 from the combustion chamber 13 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 from the third control valve 103, and the second generator 16 generates electricity to adjust the peak of the turbo generator set. The gas flowing out of the gas turbine 14 enters a first inlet of the second heat exchanger 18, the compressed air flowing out of the compressor 15 enters a second inlet of the second heat exchanger 18, the cooled gas enters the denitration tower 19 through a first outlet of the second heat exchanger 18 for tail gas treatment, and the heated high-pressure air flows into a second inlet of the combustion chamber 13 through a second outlet of the second heat exchanger 18 to be fully combusted with the fuel. During the peak period of the power consumption, the operation of the ammonia-burning gas turbine adjusts the peak of the turbo generator set, the stored liquid ammonia is combusted and then outputs electric energy through the operation of the ammonia-burning gas turbine, and the electric quantity generated in the process can meet the difference between the output electric quantity of the turbo generator set and the power consumption peak value, so that the peak adjusting function is realized.
The invention can realize that: during the power utilization valley, the valley power is utilized to store ammonia and energy, so that the efficient and safe operation of the boiler and the turbine unit is ensured; when the electricity consumption is in a peak, the ammonia combustion gas turbine system participates in peak regulation, the liquid ammonia energy storage is released to output electric energy through the ammonia combustion gas turbine system, and then the peak regulation function is flexibly achieved, so that the system works stably and reliably.
In conclusion, the invention provides a turbo generator set and ammonia-fired gas turbine combined system capable of adjusting peak energy storage, which can ensure safe and efficient operation of a boiler and a turbine set component, store and release energy in a safer mode, further realize flexible peak energy storage, improve the applicable range of the system and ensure the safety and stability of the system. The concrete advantages include: (1) The invention sets the ammonia production process, can effectively store the electricity quantity when the electricity consumption valley value is used, and ensures that the turbine unit and the boiler part operate under the design working condition, thereby keeping the high-efficiency reliability of the operation. (2) The invention utilizes the stored ammonia energy to replace the traditional hydrogen storage energy storage system, obviously reduces the pressure required by the energy storage device and the complexity of equipment, and improves the safety performance of the energy storage component. (3) The ammonia storage energy storage device and the ammonia combustion gas turbine system are combined to perform energy storage and release, a flexible peak regulation function is realized to match the peak power consumption of power utilization, the application range of the system is further expanded, the energy utilization rate of the system is improved, and the stability of the system is ensured.
Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can make modifications and equivalents to the embodiments of the present invention without departing from the spirit and scope of the present invention, which is set forth in the claims of the present application.

Claims (8)

1. A turbo generator set and ammonia combustion gas turbine combined system capable of adjusting peak energy storage is characterized by 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;
a first outlet of the boiler is connected to a first inlet of the reaction chamber, a second outlet of the boiler is connected to a second inlet of the reaction chamber, a second outlet of the reaction chamber is connected to a steam turbine high-pressure cylinder, an outlet of the steam turbine high-pressure cylinder is connected with a first inlet of a first heat exchanger, a first outlet of the first heat exchanger is connected to a condenser, an outlet of the steam turbine high-pressure cylinder is simultaneously connected to a steam turbine low-pressure cylinder, the steam turbine high-pressure cylinder and the steam turbine low-pressure cylinder are connected to a first generator, an outlet of the steam turbine low-pressure cylinder is connected with the condenser, the condenser is connected with a water pump, an outlet of the water pump is connected to a second inlet of the first heat exchanger, and a second outlet of the first heat exchanger is connected to the boiler;
the first generator generates electric energy and transmits the electric energy to the electrolytic cell, the electrolytic cell is connected to the reaction chamber from the third inlet, the first outlet of the reaction chamber is connected with 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 a first inlet, other fuels are connected to the combustion chamber through a third inlet, the outlet of the combustion chamber is connected to a gas turbine, an air passage is connected to a compressor, and the gas turbine and the compressor are connected to a second generator through a transmission to realize power generation; the outlet of the gas turbine is connected to the first inlet of the second heat exchanger, the first outlet of the second heat exchanger is connected to the denitration tower, the outlet of the compressor is connected to the second inlet of the second heat exchanger, and the second outlet of the second heat exchanger is connected with the second inlet of the combustion chamber.
2. The peak energy storage adjustable steam turbine generator unit and ammonia-fired gas turbine combined system according to claim 1, further comprising 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 peak energy storage adjustable steam turbine generator unit and ammonia-fired gas turbine combined system according to claim 2, further comprising a second control valve, wherein 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 peak energy storage adjustable steam turbine generator unit and ammonia gas turbine combined system according to claim 3, further comprising a third control valve, wherein the air is connected to the compressor through the third control valve.
5. The peak energy storage adjustable steam turbine generator unit and ammonia-fired gas turbine combined system according to claim 4, wherein during operation, all control valves are in a closed state in an initial state;
when a user is in a low valley of electricity, the first control valve is opened, the second control valve and the third control valve are kept closed, and part of the electric energy output by the first generator is connected to the electrolytic cell; high-temperature steam in the boiler enters the steam turbine high-pressure cylinder after passing through the reaction chamber to push the steam turbine high-pressure cylinder to expand and do work, part of the steam directly enters the steam turbine low-pressure cylinder to expand and do work after flowing through the steam turbine high-pressure cylinder, and part of the steam is connected to a second inlet of the first heat exchanger; the steam turbine high-pressure cylinder and the steam turbine low-pressure cylinder are connected to a first generator through a main shaft, mechanical energy is converted into electric energy by driving the main shaft to rotate, steam flowing out of the steam turbine low-pressure cylinder enters a condenser and is condensed into water, the water is pumped into a first inlet of a first heat exchanger through a water pump and exchanges heat with the steam extracted from the steam turbine high-pressure cylinder, the preheated water flows into a boiler through a first outlet of the first heat exchanger, and the cooled steam flows into the condenser through a second outlet of the first heat exchanger; at the moment, the power output of the steam turbine generator unit is stable and is higher than the electricity consumption of a user, part of electricity is communicated to an electrolytic cell through a first generator by the surplus electricity, and hydrogen is prepared by the surplus electricity through electrolysis; the electrolytic cell electrolyzes to obtain hydrogen, the hydrogen enters the reaction chamber through the third inlet, the nitrogen which is fully combusted in the boiler enters the reaction chamber through the first control valve from the first inlet, the mixed nitrogen and hydrogen react to obtain ammonia gas after the high-temperature and high-pressure conditions provided by the steam which enters the reaction chamber through the second inlet and passes through the boiler, the ammonia gas is condensed into liquid ammonia after passing through the ammonia condenser and flows into the ammonia storage tank, and the ammonia storage energy storage is realized in the ammonia storage tank.
6. The peak-load-adjustable combined turbo-generator unit and ammonia-fired gas turbine system of claim 5, wherein when the power unit is at peak power consumption, the ammonia-fired gas turbine system participates in peak load adjustment, 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 pushes the steam turbine high-pressure cylinder and the steam turbine low-pressure cylinder to expand and do work, so that the first generator is driven to output electric energy, and all the electric energy is output to a user; liquid ammonia in the ammonia storage tank is pumped into a first inlet of the combustion chamber by a liquid ammonia pump through a second control valve, air which is preheated by compression enters the combustion chamber through a second inlet, other fuels enter the combustion chamber through a third inlet, the liquid ammonia, the other fuels and high-pressure air are fully mixed and combusted in the combustion chamber to obtain high-temperature and high-pressure gas, the gas flows into a gas turbine from the combustion chamber to drive a main shaft to rotate and is connected to a compressor and a second generator through a transmission, the compressor compresses the air entering from a third control valve, and the second generator generates electricity to be used for carrying out peak regulation on a turbo-generator set; and the gas flowing out of the gas turbine enters a first inlet of the second heat exchanger, the compressed air flowing out of the compressor enters a second inlet of the second heat exchanger, the cooled gas enters the denitration tower through a first outlet of the second heat exchanger for tail gas treatment, and the heated high-pressure air flows into a second inlet of the combustion chamber from a second outlet of the second heat exchanger to be fully combusted with the fuel.
7. The peak energy storage adjustable steam turbine generator unit and ammonia-fired gas turbine combined system according to claim 6, wherein the other fuels are natural gas, liquefied gas, biomass gas and hydrogen.
8. The combined system of the turbo generator unit and the ammonia-fired gas turbine as claimed in claim 6, wherein during peak period of power consumption, the ammonia-fired gas turbine is operated to adjust peak of the turbo generator unit, the stored liquid ammonia is combusted and then the ammonia-fired gas turbine is operated to output electric energy, and the electric energy generated in the process can satisfy the difference between the output electric energy of the turbo generator unit and the peak value of power consumption, thereby completing the function of peak adjustment.
CN202210860190.9A 2022-07-21 2022-07-21 Turbo generator set and burning ammonia gas turbine combined system of adjustable peak energy storage Pending CN115163306A (en)

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CN202210860190.9A CN115163306A (en) 2022-07-21 2022-07-21 Turbo generator set and burning ammonia gas turbine combined system of adjustable peak energy storage

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