CN110779009A - High-temperature high-pressure steam heating fused salt energy storage system of thermal power plant - Google Patents
High-temperature high-pressure steam heating fused salt energy storage system of thermal power plant Download PDFInfo
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- CN110779009A CN110779009A CN201911135895.9A CN201911135895A CN110779009A CN 110779009 A CN110779009 A CN 110779009A CN 201911135895 A CN201911135895 A CN 201911135895A CN 110779009 A CN110779009 A CN 110779009A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D11/00—Feed-water supply not provided for in other main groups
- F22D11/02—Arrangements of feed-water pumps
- F22D11/06—Arrangements of feed-water pumps for returning condensate to boiler
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
- F28D2020/0047—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material using molten salts or liquid metals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Abstract
The invention relates to a fused salt energy storage system heated by high-temperature and high-pressure steam in a thermal power plant. The energy storage system comprises a conventional thermal power generation system, a steam heating molten salt system and a molten salt heat storage system. The conventional thermal power generation system is a reheat steam unit; the steam heating molten salt system consists of five heat exchangers and is respectively connected with the thermal power generation system and the molten salt heat storage system, so that the heat exchange function of high-temperature and high-pressure steam of the thermal power generation system and the molten salt heat storage system is realized. According to the invention, the fused salt energy storage system is heated by high-temperature high-pressure steam, high-grade steam of a thermal power generation system is stored, steam at the inlet of a steam turbine can be bypassed, complete thermoelectric decoupling is realized, flexible operation and deep peak regulation of the thermal power generation system are facilitated, and safe operation of a boiler and a steam turbine generator unit is ensured.
Description
Technical Field
The invention relates to the technical field of energy storage, in particular to a fused salt energy storage system for heating high-temperature and high-pressure steam in a thermal power plant.
Background
In order to practice a green development idea, in recent years, the Chinese energy structure is rapidly transformed to new energy, the proportion of the new energy such as wind energy, solar energy and the like is rapidly increased, and the frequency of participating in peak regulation of a thermal power generating unit and the requirements on the quality of the thermal power generating unit are greatly improved. On the other hand, the peak-valley difference of the power consumption is increased day by day due to economic development, and a cogeneration unit is adopted in the north of China to ensure the heat supply in winter, so that the contradiction between the peak-valley difference of the power consumption and the heat supply season is rapidly worsened. Because the thermal power generating unit is still the most main basic power generation mode in China, the power grid continuously improves the standard and requires the thermal power generating unit to quickly respond to load changes. The thermoelectric decoupling technology is developed, so that the flexible peak regulation and wide-load operation of a thermal power generation system are facilitated, and the safe operation of a power grid is ensured.
Because the molten salt energy storage system is widely used in a solar thermal power generation system and has the capability of large-scale commercial application, domestic scholars propose a molten salt heat storage technology of a thermal power plant. Chinese patent CN 107401430A, CN 108534576A discloses a thermal storage system for electric and thermal peak regulation of a thermal power plant and a fused salt energy storage system for electric peak regulation of a thermal power generating unit respectively, wherein a steam turbine is used for extracting steam to heat fused salt in the daytime, and heat energy is stored. Chinese patent CN 108316980A, CN 110206603A, CN 110207092A discloses a thermal power generating unit fused salt heat storage and heat release peak regulation system, a thermal power generating unit thermoelectric decoupling system and method based on steam heating fused salt heat storage, and a thermal power generating unit power generation peak regulation system and method based on steam total heat heating fused salt heat storage respectively. Chinese patent CN 106885232A discloses a liquid energy storage system suitable for deep peak shaving of a thermal power generating unit, wherein one of high-pressure main steam and high-temperature reheat steam is adopted to heat a molten salt system to realize heat storage, and the released steam continues to return to a steam turbine to do work or return to a boiler reheating system. Chinese patents CN 108426238A and CN 108548168A respectively disclose a fused salt heat storage and supply system of a thermal power plant heated by main steam and a fused salt heat storage and peak regulation system of a thermal power plant heated by main steam, and part of the main steam is extracted to exchange heat with fused salt to realize heat storage. (only a small portion of the main steam is extracted, and the reheat steam is reduced). Chinese patent CN 208418894U discloses fused salt energy storage heating system that power plant's degree of depth peak shaver and flexibility were reformed transform, extracts partly high-pressure main steam and partly reheat steam and carries out the heat exchange with the fused salt respectively, becomes low temperature high pressure main steam after the heat exchange, gets into the reheater after mixing with two sections bleeds of steam turbine, becomes low temperature reheat steam after the reheat steam heat exchange and is used for the heat supply. (only a small amount of main steam can be extracted, otherwise, overpressure of a reheater can be caused by low-temperature high-pressure main steam; heat storage can be realized only by heat supply load; phase change heating cannot be realized by high-temperature steam, and most heat energy is wasted in heat supply or condensation). Chinese patent CN 110006026A discloses a deep peak shaving system of a thermal power plant, wherein a part of high-pressure main steam and a part of reheat steam are extracted to respectively exchange heat with molten salt, the high-pressure main steam is subjected to pressure reduction and then to heat exchange, then enters a reheater, and the reheat steam is changed into low-temperature steam after heat exchange and enters a low-pressure heater of a steam turbine. (the high-pressure main steam is greatly decompressed to cause energy loss; the high-temperature steam cannot be utilized for phase change heating, and most heat energy is wasted for heat supply or condensation)
The existing molten salt heat storage system is high in coupling with a thermal power generation thermodynamic system, small in heat storage capacity, and incapable of realizing independent energy storage of molten salt during shutdown of a turbine, part of the heat storage capacity of the molten salt heat storage system is limited by heat supply capacity, and part of the molten salt heat storage system cannot store steam phase change heat, so that heat waste is caused.
Disclosure of Invention
In order to solve the problems, the invention provides a fused salt energy storage system heated by high-temperature and high-pressure steam of a thermal power plant, which can realize partial peak regulation of the load of a steam turbine by heating the fused salt system by steam, can also realize the full peak regulation of the load of the steam turbine without being limited by heat supply, ensures that the heat energy of high-grade steam is almost completely stored, and further improves the deep peak regulation capability of the thermal power plant.
The technical scheme adopted by the invention is as follows: the utility model provides a thermal power factory high temperature high pressure steam heating fused salt energy storage system, includes thermal power system, steam heating fused salt system and fused salt heat-retaining system, its characterized in that: the thermal power generation system, the steam heating molten salt system and the molten salt heat storage system are sequentially connected, so that the heat exchange function of high-temperature and high-pressure steam of the thermal power generation system and the molten salt heat storage system is realized.
Preferably, the steam heating molten salt system comprises an overheating heater, an evaporation heater, a preheating heater A, a high-pressure water feed pump and a high-pressure water feed temperature mixing device, high-pressure main steam of the thermal power generation system enters the overheating heater through a steam inlet pipeline of the overheating heater to exchange heat with molten salt in the overheating heater, then enters the evaporation heater through a steam outlet pipeline of the heating heater to exchange heat with the molten salt in the evaporation heater, is condensed into high-pressure water, then enters the preheating heater A through a high-pressure water inlet pipeline of the preheating heater A to become high-pressure supercooled water, and is finally pressurized and sent to the water supply system through the high-pressure water feed pump to realize high-pressure steam.
Further, steam heating fused salt system still includes reheat heater, preheating heater B, high temperature high pressure steam intercommunication pipeline and low temperature reheat steam exhaust to the auxiliary steam header pipeline, thermal power system's high temperature reheat steam mixes with the high pressure main steam that part comes by high temperature high pressure steam intercommunication pipeline earlier, and the pressure risees the back and gets into reheating heater through reheat heater steam inlet pipeline, with the interior fused salt heat transfer of reheating heater, then gets into preheating heater B through reheat heater steam outlet pipeline, becomes low temperature reheat steam back by returning to low temperature reheat system, and increment steam that high pressure main steam brought gets into the auxiliary steam header by low temperature reheat steam exhaust to auxiliary steam header pipeline, realizes high temperature reheat steam circulation.
Furthermore, the low-temperature molten salt in the low-temperature molten salt heat storage tank of the molten salt heat storage system is pressurized by a low-temperature molten salt pump and then is divided into two paths of molten salts, one path of molten salt enters the preheating heater A to be heated, the other path of molten salt enters the preheating heater B to be heated, the two paths of molten salt are mixed and then enter the evaporation heater, the two paths of molten salt are divided into two paths of molten salt again after being heated, one path of molten salt enters the overheating heater to be heated, the other path of molten salt enters the reheating heater to be heated, and the two paths of molten.
Furthermore, the working temperature of the high-temperature molten salt heat storage tank is 400-565 ℃.
Furthermore, the working temperature of the low-temperature molten salt heat storage tank is 290-310 ℃.
The beneficial effects obtained by the invention are as follows: adopt the high temperature high pressure steam heating fused salt of thermal power factory, high pressure main steam and high temperature reheat steam heat the fused salt simultaneously, heat low temperature fused salt into high temperature fused salt. And the high-pressure main steam is cooled by the molten salt to become high-pressure condensed water, and the high-pressure condensed water is pressurized and then returns to a boiler water supply system to finish the cyclic heating. And the high-temperature reheated steam is cooled by molten salt to become low-temperature reheated steam, and the low-temperature reheated steam returns to a boiler reheater to complete the cyclic heating. Therefore, the flexible variable load of the steam turbine can be realized, the stable load operation of the boiler is ensured, and the shutdown without stopping the boiler can also be realized.
The invention has the following advantages:
(1) the decoupling operation of the boiler and the steam turbine is realized, and the operation flexibility of the steam turbine is improved;
(2) the deep peak regulation capacity of the thermal power plant is improved, and the power grid dispatching requirement is met;
(3) the heat storage efficiency is higher, the heat of high-grade steam is directly stored, and the low heat storage efficiency of electric heating is avoided.
Drawings
FIG. 1-2 is a schematic flow diagram of a molten salt energy storage system heated by high-temperature high-pressure steam of a thermal power plant according to the present invention;
reference numerals: a conventional thermal power generation system 1, a high-pressure main steam pipeline 1.1, a high-temperature reheat steam pipeline 1.2, a low-temperature reheat steam pipeline 1.3, a water supply pipeline 1.4, a condensed water pipeline 1.5, a boiler 1.6, a turbo generator unit 1.7, an auxiliary steam header 1.8, a steam heating molten salt system 2, an overheating heater 2.1, an overheating heater steam inlet pipeline 2.11, an overheating heater molten salt outlet pipeline 2.12, an overheating heater steam outlet pipeline 2.13, an overheating heater molten salt inlet pipeline 2.14, a reheating heater 2.2, a reheating heater steam inlet pipeline 2.21, a reheating heater molten salt outlet pipeline 2.22, a reheating heater steam outlet pipeline 2.23, a reheating heater inlet pipeline 2.24, an evaporation heater 2.3, a preheating heater A2.4, a preheating heater A high-pressure water inlet pipeline 2.41, a preheating heater A molten salt outlet pipeline 2.42, a preheating heater A high-pressure water outlet pipeline 2.43, a preheating heater A inlet pipeline 2.44, a preheating heater A molten salt outlet, The system comprises a preheating heater B2.5, a preheating heater B steam outlet pipeline 2.51, a preheating heater B molten salt inlet pipeline 2.52, a preheating heater B molten salt outlet pipeline 2.53, a high-temperature high-pressure steam communication pipeline 2.6, a low-temperature reheating steam exhaust-to-auxiliary steam header pipeline 2.7, a high-pressure water feed pump 2.8, a high-pressure water feed temperature mixing device 2.9, a high-pressure water feed bypass pipeline 2.91, a molten salt heat storage system 3, a high-temperature molten salt heat storage tank 3.1, a low-temperature molten salt heat storage tank 3.2 and a low-temperature molten salt pump 3.3.
Detailed Description
The invention will be further described with reference to the following drawings and specific embodiments.
As shown in fig. 1-2, the thermal power plant high-temperature high-pressure steam heating molten salt energy storage system shown in fig. 2 comprises a thermal power generation system 1, a steam heating molten salt system 2 and a molten salt heat storage system 3, wherein the steam heating molten salt system 2 is respectively connected with the thermal power generation system 1 and the molten salt heat storage system 3, so that the heat exchange function of the thermal power generation system high-temperature high-pressure steam and the molten salt heat storage system is realized. In the present embodiment, the thermal power generation system 1 employs a conventional thermal power generation system.
The specific heat storage process is as follows:
high-pressure main steam of a conventional thermal power generation system 1 enters a superheated heater 2.1 through a superheated heater steam inlet pipeline 2.11, exchanges heat with molten salt in the superheated heater 2.1, then enters an evaporation heater 2.3 through a hot heater steam outlet pipeline 2.13, exchanges heat with the molten salt in the evaporation heater 2.3, is condensed into high-pressure water, enters a preheating heater A through a preheating heater A high-pressure water inlet pipeline 2.41, is changed into high-pressure supercooled water, and is finally pressurized and sent to a water supply system through a high-pressure water feed pump 2.8, so that high-pressure steam-water circulation is realized.
High-temperature reheat steam of a conventional thermal power generation system 1 is mixed with high-pressure main steam partially coming from a high-temperature high-pressure steam communication pipeline 2.6, the high-temperature reheat steam enters a reheat heater 2.2 through a reheat heater steam inlet pipeline 2.21 after the pressure is increased, the high-temperature reheat steam exchanges heat with fused salt in the reheat heater 2.2, then enters a preheating heater B through a reheat heater steam outlet pipeline 2.23, the high-temperature reheat steam is changed into low-temperature reheat steam and then returns to a low-temperature reheat system, incremental steam brought by the high-pressure main steam enters an auxiliary steam header 1.8 through low-temperature reheat steam exhaust to an auxiliary steam header pipeline 2.7, and the steam-water circulation of the high.
The low-temperature molten salt in the low-temperature molten salt heat storage tank 3.2 of the molten salt heat storage system 3 is pressurized by a low-temperature molten salt pump 3.3 and then divided into two paths of molten salts, one path of molten salt enters a preheating heater A2.4 to be heated, the other path of molten salt enters a preheating heater B2.5 to be heated, the two paths of molten salts are mixed and then enter an evaporation heater 2.3, the two paths of molten salts are divided into two paths of molten salts again after being heated, one path of molten salt enters a overheating heater 2.1 to be heated, the other path of molten salt enters a reheating heater 2.2 to be heated, and the two paths of molten salts are mixed.
According to different unit parameters of a thermal power plant, the working temperature of the high-temperature molten salt heat storage tank 3.1 may be different, and under the condition of conventional subcritical and supercritical unit parameters, the working temperature of the high-temperature molten salt heat storage tank 3.1 is about 400 ℃, and the working temperature of the low-temperature molten salt heat storage tank 3.2 is about 290 ℃.
The energy storage system comprises a conventional thermal power generation system, a steam heating molten salt system and a molten salt heat storage system. The conventional thermal power generation system is a reheat steam unit, and the steam heating molten salt system consists of five heat exchangers and is respectively connected with the thermal power generation system and the molten salt heat storage system, so that the heat exchange function of high-temperature and high-pressure steam of the thermal power generation system and the molten salt heat storage system is realized. According to the invention, the fused salt energy storage system is heated by high-temperature high-pressure steam, high-grade steam of a thermal power generation system is stored, steam at the inlet of a steam turbine can be bypassed, complete thermoelectric decoupling is realized, flexible operation and deep peak regulation of the thermal power generation system are facilitated, and safe operation of a boiler and a steam turbine generator unit is ensured.
The foregoing shows and describes the general principles and principal structural features of the present invention. The present invention is not limited to the above examples, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a thermal power factory high temperature high pressure steam heating fused salt energy storage system, includes thermal power system (1), steam heating fused salt system (2) and fused salt heat-retaining system (3), its characterized in that: the thermal power generation system (1), the steam heating molten salt system (2) and the molten salt heat storage system (3) are sequentially connected, so that the heat exchange function of high-temperature and high-pressure steam of the thermal power generation system and the molten salt heat storage system is realized.
2. The high-temperature high-pressure steam heating molten salt energy storage system of the thermal power plant according to claim 1, characterized in that: the steam heating molten salt system (2) comprises an overheating heater (2.1), an evaporation heater (2.3), a preheating heater A (2.4), a high-pressure water feed pump (2.8) and a high-pressure water feed temperature mixing device (2.9), high-pressure main steam of the thermal power system (1) enters the overheating heater (2.1) through an overheating heater steam inlet pipeline (2.11) to exchange heat with molten salt in the overheating heater (2.1), then enters the evaporation heater (2.3) through a hot heater steam outlet pipeline (2.13) to exchange heat with the molten salt in the evaporation heater (2.3), after being condensed into high-pressure water, enters the preheating heater A (2.4) through a preheating heater A high-pressure water inlet pipeline (2.41) to become high-pressure supercooled water, and finally is pressurized and sent to a water supply system through the high-pressure water feed pump (2.8), so that high-pressure steam-water circulation is realized.
3. The high-temperature high-pressure steam heating molten salt energy storage system of the thermal power plant according to claim 2, characterized in that: the steam heating molten salt system (2) also comprises a reheating heater (2.2), a preheating heater B (2.5), a high-temperature high-pressure steam communicating pipeline (2.6) and a low-temperature reheating steam exhaust-to-auxiliary steam header pipeline (2.7), high-temperature reheat steam of the thermal power generation system (1) is firstly mixed with high-pressure main steam which is partially from a high-temperature high-pressure steam communicating pipeline (2.6), the high-temperature reheat steam enters the reheat heater (2.2) through a reheat heater steam inlet pipeline (2.21) after the pressure is increased, and the high-temperature reheat steam exchanges heat with molten salt in the reheat heater (2.2), then enters a preheating heater B (2.5) through a reheating heater steam outlet pipeline (2.23), is changed into low-temperature reheating steam and then returns to a low-temperature reheating system, incremental steam brought by high-pressure main steam is discharged to an auxiliary steam header pipeline (2.7) through the low-temperature reheating steam and enters an auxiliary steam header (1.8), and the steam-water circulation of the high-temperature reheating steam is realized.
4. The high-temperature high-pressure steam heating molten salt energy storage system of the thermal power plant according to claim 3, characterized in that: low-temperature fused salt in the low-temperature fused salt heat storage tank (3.2) of fused salt heat storage system (3) is pressurized by low-temperature fused salt pump (3.3), then divide into two ways of fused salt, get into preheating heater A (2.4) and be heated all the way, another way gets into preheating heater B (2.5) and is heated, two ways of fused salt mix and get into evaporating heater (2.3), divide into two ways of fused salt again after the heating, get into overheating heater (2.1) and be heated all the way, another way gets into reheating heater (2.2) and is heated, get into high-temperature fused salt heat storage tank (3.1) after two ways of fused salt mix, realize the flow and the heat-retaining of fused salt return circuit.
5. The high-temperature high-pressure steam heating molten salt energy storage system of the thermal power plant according to claim 4, characterized in that: the working temperature of the high-temperature molten salt heat storage tank (3.1) is 400-565 ℃.
6. The high-temperature high-pressure steam heating molten salt energy storage system of the thermal power plant according to claim 4, characterized in that: the working temperature of the low-temperature molten salt heat storage tank (3.2) is 290-310 ℃.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112502800A (en) * | 2020-11-19 | 2021-03-16 | 中国电力工程顾问集团中南电力设计院有限公司 | Flexible large-scale high-parameter heat supply system of thermal power plant |
| CN112761745A (en) * | 2021-01-20 | 2021-05-07 | 中国科学院力学研究所 | Hot water energy storage system and method for thermal generator set |
| CN113408904A (en) * | 2021-06-21 | 2021-09-17 | 西安热工研究院有限公司 | Fused salt reserve calculation method for deep peak shaving of fused salt heat storage auxiliary thermal power generating unit |
| CN113847109A (en) * | 2021-09-26 | 2021-12-28 | 西安热工研究院有限公司 | Electric heating comprehensive energy storage peak regulation system of coal electric unit and working method |
| CN114704815A (en) * | 2022-04-08 | 2022-07-05 | 西安热工研究院有限公司 | Vapor heat storage system |
| CN114992612A (en) * | 2022-04-22 | 2022-09-02 | 东方电气集团东方锅炉股份有限公司 | Molten salt steam generation system and method |
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2019
- 2019-11-19 CN CN201911135895.9A patent/CN110779009A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112502800A (en) * | 2020-11-19 | 2021-03-16 | 中国电力工程顾问集团中南电力设计院有限公司 | Flexible large-scale high-parameter heat supply system of thermal power plant |
| CN112502800B (en) * | 2020-11-19 | 2023-08-18 | 中国电力工程顾问集团中南电力设计院有限公司 | Large-scale high-parameter heating system of thermal power plant flexibility |
| CN112761745A (en) * | 2021-01-20 | 2021-05-07 | 中国科学院力学研究所 | Hot water energy storage system and method for thermal generator set |
| CN112761745B (en) * | 2021-01-20 | 2022-06-03 | 中国科学院力学研究所 | Hot water energy storage system and method for thermal generator set |
| CN113408904A (en) * | 2021-06-21 | 2021-09-17 | 西安热工研究院有限公司 | Fused salt reserve calculation method for deep peak shaving of fused salt heat storage auxiliary thermal power generating unit |
| CN113847109A (en) * | 2021-09-26 | 2021-12-28 | 西安热工研究院有限公司 | Electric heating comprehensive energy storage peak regulation system of coal electric unit and working method |
| CN113847109B (en) * | 2021-09-26 | 2024-02-20 | 西安热工研究院有限公司 | Electric heating comprehensive energy storage peak shaving system of coal motor unit and working method |
| CN114704815A (en) * | 2022-04-08 | 2022-07-05 | 西安热工研究院有限公司 | Vapor heat storage system |
| CN114704815B (en) * | 2022-04-08 | 2023-11-07 | 西安热工研究院有限公司 | Steam heat storage system |
| CN114992612A (en) * | 2022-04-22 | 2022-09-02 | 东方电气集团东方锅炉股份有限公司 | Molten salt steam generation system and method |
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