CN203837549U - High-temperature steam molten-salt energy storage system - Google Patents
High-temperature steam molten-salt energy storage system Download PDFInfo
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- CN203837549U CN203837549U CN201420254941.3U CN201420254941U CN203837549U CN 203837549 U CN203837549 U CN 203837549U CN 201420254941 U CN201420254941 U CN 201420254941U CN 203837549 U CN203837549 U CN 203837549U
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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
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Abstract
The utility model provides a high-temperature steam molten-salt energy storage system, and relates to the technical field of molten-salt energy storage. A low-temperature molten-salt pump is installed at the top of a cold molten-salt storage tank, a high-temperature molten-salt pump is installed at the top of a hot molten-salt storage tank, a first heat exchanger is connected with the low-temperature molten-salt pump and the hot molten-salt storage tank so as to form a molten-salt flowing channel, and the first heat exchanger is provided with an inlet and an outlet of external high-temperature steam. A second heat exchanger, a third heat exchanger and a fourth heat exchanger are sequentially connected in series and connected with the high-temperature molten-salt pump and the cold molten-salt storage tank so as to form a molten-salt flowing channel. A water/steam flowing channel is formed by the fourth heat exchanger, the third heat exchanger, a steam pocket and the second heat exchanger, the fourth heat exchanger is provided with an external supercooled water inlet, and the second heat exchanger is provided with a high-temperature steam outlet. According to the high-temperature steam molten-salt energy storage system, in an electricity or heat utilization trough period, heat energy of the high-temperature steam produced by a boiler of a thermal power plant can be converted into heat energy of molten salt for storage; in an electricity or heat utilization peak period, heat is released outwards, water is heated to become the high-temperature steam for electricity generation and heat supply, and peak load shaving can be carried out on the thermal power plant.
Description
Technical field
The utility model relates to molten salt energy-storage technical field, is specifically related to a kind of high-temperature steam power generation molten salt energy storage system.
Background technology
Country has formulated a series of policies from 2000 later and has promoted the development of China's Cogeneration Project in succession, by in steam drive Turbo-generator Set power generation process or afterwards draw gas or the heat of steam discharge is used, not only generated electricity but also heat supply, the thermal efficiency is reached more than 80%.Cogeneration Project have save the energy, improve environment, improve heating quality, the comprehensive benefits such as supply increase electric power.At present, steam power plant produces high temperature and high pressure steam with burning in boiler coal and realizes cogeneration of heat and power.In practical application, because user often presents typical periodicity peak valley distribution to electricity and hot demand, for meeting peak demand, steam power plant need to configure spike boiler for peak regulation; And when with heat or low power consumption, boiler but cannot oepration at full load, form the waste of device resource.
Utility model content
The object of the invention is to propose a kind of high-temperature steam power generation molten salt energy storage system, for the peak load shifting of steam power plant, balance electric load and thermic load, realize the maximum using of device resource, improves the economy of steam power plant's operation.
Technical problem to be solved in the utility model realizes by the following technical solutions:
A kind of high-temperature steam power generation molten salt energy storage system, it is characterized in that: mainly formed by sloppy heat salt storage tank, low-temperature molten salt pump, hot melt salt storage tank, high-temperature melting salt pump, First Heat Exchanger, the second heat exchanger, steam drum, the 3rd heat exchanger and the 4th heat exchanger, described low-temperature molten salt pump and high-temperature melting salt pump are submerged pump, are installed on respectively sloppy heat salt storage tank and hot melt salt tank top; Described First Heat Exchanger, the second heat exchanger, the 3rd heat exchanger and the 4th heat exchanger are fused salt-steam/water heat exchanger; Described First Heat Exchanger and low-temperature molten salt pump and hot melt salt storage tank are connected to form a fused salt flow channel, and First Heat Exchanger is provided with outside high-temperature steam import and export; Described the second heat exchanger, the 3rd heat exchanger, the 4th heat exchanger are connected successively and are connected and also form one article of fused salt flow channel with high-temperature melting salt pump, sloppy heat salt storage tank; Described the 4th heat exchanger, the 3rd heat exchanger, steam drum and the second heat exchanger form one article of water/steam flow channel, and on the 4th heat exchanger, are provided with outside subcooled water entrance, are provided with high-temperature steam outlet on the second heat exchanger.
Described sloppy heat salt storage tank and the lowest part of hot melt salt storage tank in system, First Heat Exchanger is consistent with the second heat exchanger absolute altitude and all higher than two fused salt storage tanks, the absolute altitude of the 3rd heat exchanger is higher than the second heat exchanger, the absolute altitude of the 4th heat exchanger is higher than the 3rd heat exchanger, is conducive to the emptying smoothly of fused salt in each heat exchanger.
Described First Heat Exchanger heats low-temperature molten salt with outside high-temperature steam, the heat energy that is fused salt by the thermal power transfer of high-temperature steam.
Described the 4th heat exchanger, the 3rd heat exchanger and the second heat exchanger use high-temperature molten salt by preheating, evaporation and overheated three heat transfer process, outside subcooled water to be heated into high temperature and high pressure steam successively.
The beneficial effects of the utility model are:
The utility model provides a kind of high-temperature steam power generation molten salt energy storage system, can be in electricity consumption or with hot low ebb time, and the thermal energy storage that is fused salt by the thermal power transfer of the high-temperature steam of thermal power plant boiler output; During in electricity consumption or with hot peak, the external heat release of system, is heated into water that high-temperature steam generates electricity and heat supply.Be applied to steam power plant and carry out peak load shifting, can replace and build spike boiler, and realize the maximum using of existing device resource, improve the economy of steam power plant's operation.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure: 1, sloppy heat salt storage tank; 2, low-temperature molten salt pump; 3, hot melt salt storage tank; 4, high-temperature melting salt pump; 5, First Heat Exchanger; 6, the second heat exchanger; 7, steam drum; 8, the 3rd heat exchanger; 9, the 4th heat exchanger.
Detailed description of the invention
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with specific embodiments and the drawings, further set forth the utility model, but following embodiment is only preferred embodiment of the present utility model, not all.Based on the embodiment in embodiment, those skilled in the art are other embodiment that obtains under the prerequisite of not making creative work, all belongs to the protection domain of this patent.
As shown in Figure 1, a kind of high-temperature steam power generation molten salt energy storage system, mainly be made up of sloppy heat salt storage tank 1, low-temperature molten salt pump 2, hot melt salt storage tank 3, high-temperature melting salt pump 4, First Heat Exchanger 5, the second heat exchanger 6, steam drum 7, the 3rd heat exchanger 8 and the 4th heat exchanger 9, low-temperature molten salt pump 2 and high-temperature melting salt pump 4 are installed on respectively sloppy heat salt storage tank 1 and hot melt salt storage tank 3 tops; First Heat Exchanger 5 is connected to form a fused salt flow channel with low-temperature molten salt pump 2 and hot melt salt storage tank 3, and First Heat Exchanger is provided with outside high-temperature steam import a1 and outlet a2; The second heat exchanger 6, the 3rd heat exchanger 8, the 4th heat exchanger 9 are connected successively and are connected and also form one article of fused salt flow channel with high-temperature melting salt pump 4, sloppy heat salt storage tank 1; The 4th heat exchanger 9, the 3rd heat exchanger 8, steam drum 7 and the second heat exchanger 6 form one article of water/steam flow channel, and on the 4th heat exchanger 9, are provided with outside subcooled water entrance b1, are provided with high-temperature steam outlet b2 on the second heat exchanger 6.
A kind of high-temperature steam power generation molten salt energy storage system mainly comprises heat accumulation and two kinds of mode of operations of heat release.When heat accumulation, by low-temperature molten salt pump 2,250 DEG C of low-temperature molten salts in sloppy heat salt storage tank 1 are delivered to First Heat Exchanger 5,470 DEG C, the high temperature and high pressure steam of 50bar flow into low-temperature molten salt are heated from a1 mouth, 450 DEG C of high-temperature molten salts that obtain flow in hot melt salt storage tank 3 and store, simultaneously high temperature and high pressure steam is cooled to 260 DEG C, the condensed water of 50bar, and this condensed water can be used as thermal power plant boiler feedwater and recycles.When heat release, 450 DEG C of high-temperature molten salts in salt storage tank 3 are delivered to successively the second heat exchanger 6, the 3rd heat exchanger 8 and the 4th heat exchanger 9 by high-temperature melting salt pump 4, realize the heat exchange of high-temperature molten salt and steam/water, 250 DEG C of low-temperature molten salts that obtain after heat release flow in sloppy heat salt storage tank 1 and store; In fused salt exothermic process, 200 DEG C, the subcooled water of 50bar flow into the 4th heat exchanger 9, the 3rd heat exchanger 8, steam drum 7 and the second heat exchanger 6 successively from b1 mouth, finally become 440 DEG C, 50bar steam through preheating, evaporation and overheated three processes respectively and flow out from the b2 mouth of the second heat exchanger 6, and be transported to steam turbine in thermal power plant electricity generation system and carry out cogeneration.
More than show and described general principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what in above-described embodiment and description, describe is only preference of the present utility model; be not used for limiting the utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. a high-temperature steam power generation molten salt energy storage system, it is characterized in that: mainly formed by sloppy heat salt storage tank, low-temperature molten salt pump, hot melt salt storage tank, high-temperature melting salt pump, First Heat Exchanger, the second heat exchanger, steam drum, the 3rd heat exchanger and the 4th heat exchanger, described low-temperature molten salt pump and high-temperature melting salt pump are submerged pump, are installed on respectively sloppy heat salt storage tank and hot melt salt tank top; Described First Heat Exchanger, the second heat exchanger, the 3rd heat exchanger and the 4th heat exchanger are fused salt-steam/water heat exchanger; Described First Heat Exchanger and low-temperature molten salt pump and hot melt salt storage tank are connected to form a fused salt flow channel, and First Heat Exchanger is provided with outside high-temperature steam import and export; Described the second heat exchanger, the 3rd heat exchanger, the 4th heat exchanger are connected successively and are connected and also form one article of fused salt flow channel with high-temperature melting salt pump, sloppy heat salt storage tank; Described the 4th heat exchanger, the 3rd heat exchanger, steam drum and the second heat exchanger form one article of water/steam flow channel, and on the 4th heat exchanger, are provided with outside subcooled water entrance, are provided with high-temperature steam outlet on the second heat exchanger.
2. a kind of high-temperature steam power generation molten salt energy storage system according to claim 1, it is characterized in that: sloppy heat salt storage tank and the lowest part of hot melt salt storage tank in system, First Heat Exchanger is consistent with the second heat exchanger absolute altitude and all higher than two fused salt storage tanks, the absolute altitude of the 3rd heat exchanger is higher than the second heat exchanger, the absolute altitude of the 4th heat exchanger is higher than the 3rd heat exchanger, is conducive to the emptying smoothly of fused salt in each heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420254941.3U CN203837549U (en) | 2014-05-16 | 2014-05-16 | High-temperature steam molten-salt energy storage system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420254941.3U CN203837549U (en) | 2014-05-16 | 2014-05-16 | High-temperature steam molten-salt energy storage system |
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| CN203837549U true CN203837549U (en) | 2014-09-17 |
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| CN201420254941.3U Expired - Fee Related CN203837549U (en) | 2014-05-16 | 2014-05-16 | High-temperature steam molten-salt energy storage system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406152A (en) * | 2014-11-05 | 2015-03-11 | 江苏太阳宝新能源有限公司 | Method for modifying thermal power station by storing energy through fused salt and device of method |
| CN105627800A (en) * | 2014-10-31 | 2016-06-01 | 中广核太阳能开发有限公司 | Solid heat storage system and solid heat storage method |
| CN106885232A (en) * | 2017-04-12 | 2017-06-23 | 东方电气集团东方锅炉股份有限公司 | A kind of liquid energy-storage system suitable for fired power generating unit depth peak regulation |
| CN107013892A (en) * | 2017-05-17 | 2017-08-04 | 杭州锅炉集团股份有限公司 | A kind of combustion engine waste heat boiler device with fused salt heat accumulation |
| CN107490045A (en) * | 2017-09-13 | 2017-12-19 | 北京工业大学 | A kind of portable fused salt stores, heat-releasing device |
| CN108534576A (en) * | 2018-06-13 | 2018-09-14 | 常州索拉尔熔盐泵阀科技有限公司 | A kind of power generation molten salt energy storage system of fired power generating unit power peak regulation |
| CN108548167A (en) * | 2018-03-20 | 2018-09-18 | 北京工业大学 | A kind of fused salt hold over system of thermal power plant's accumulation of heat peak regulation using main steam heating |
| CN108548168A (en) * | 2018-03-20 | 2018-09-18 | 北京工业大学 | A kind of thermal power plant's fused salt accumulation of heat peak regulation system heated using main steam |
| CN110863871A (en) * | 2019-12-04 | 2020-03-06 | 上海豫源电力科技有限公司 | System for fused salt heat storage energy storage optimizes thermal power peak regulation |
| US11015877B2 (en) | 2017-02-07 | 2021-05-25 | Battelle Energy Alliance, Llc | Energy storage systems including thermal storage tanks |
| CN113048469A (en) * | 2021-03-17 | 2021-06-29 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | Ammonia boiler for real-time cracking of ammonia fuel by using plasma based on energy storage of molten salt |
-
2014
- 2014-05-16 CN CN201420254941.3U patent/CN203837549U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105627800A (en) * | 2014-10-31 | 2016-06-01 | 中广核太阳能开发有限公司 | Solid heat storage system and solid heat storage method |
| CN104406152A (en) * | 2014-11-05 | 2015-03-11 | 江苏太阳宝新能源有限公司 | Method for modifying thermal power station by storing energy through fused salt and device of method |
| US11015877B2 (en) | 2017-02-07 | 2021-05-25 | Battelle Energy Alliance, Llc | Energy storage systems including thermal storage tanks |
| CN106885232A (en) * | 2017-04-12 | 2017-06-23 | 东方电气集团东方锅炉股份有限公司 | A kind of liquid energy-storage system suitable for fired power generating unit depth peak regulation |
| CN107013892B (en) * | 2017-05-17 | 2020-10-23 | 杭州锅炉集团股份有限公司 | Gas turbine waste heat boiler device with molten salt heat storage function |
| CN107013892A (en) * | 2017-05-17 | 2017-08-04 | 杭州锅炉集团股份有限公司 | A kind of combustion engine waste heat boiler device with fused salt heat accumulation |
| CN107490045A (en) * | 2017-09-13 | 2017-12-19 | 北京工业大学 | A kind of portable fused salt stores, heat-releasing device |
| CN107490045B (en) * | 2017-09-13 | 2023-09-01 | 北京工业大学 | Movable molten salt storage and heat release device |
| CN108548167A (en) * | 2018-03-20 | 2018-09-18 | 北京工业大学 | A kind of fused salt hold over system of thermal power plant's accumulation of heat peak regulation using main steam heating |
| CN108548168A (en) * | 2018-03-20 | 2018-09-18 | 北京工业大学 | A kind of thermal power plant's fused salt accumulation of heat peak regulation system heated using main steam |
| CN108548167B (en) * | 2018-03-20 | 2024-01-09 | 北京工业大学 | Molten salt heat storage system for heat storage peak shaving of thermal power plant by utilizing main steam for heating |
| CN108534576A (en) * | 2018-06-13 | 2018-09-14 | 常州索拉尔熔盐泵阀科技有限公司 | A kind of power generation molten salt energy storage system of fired power generating unit power peak regulation |
| CN110863871A (en) * | 2019-12-04 | 2020-03-06 | 上海豫源电力科技有限公司 | System for fused salt heat storage energy storage optimizes thermal power peak regulation |
| CN113048469A (en) * | 2021-03-17 | 2021-06-29 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | Ammonia boiler for real-time cracking of ammonia fuel by using plasma based on energy storage of molten salt |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 |
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| CF01 | Termination of patent right due to non-payment of annual fee |