CN114522625A - In-pipe heat source type salt melting and energy storage system - Google Patents
In-pipe heat source type salt melting and energy storage system Download PDFInfo
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- CN114522625A CN114522625A CN202210382887.XA CN202210382887A CN114522625A CN 114522625 A CN114522625 A CN 114522625A CN 202210382887 A CN202210382887 A CN 202210382887A CN 114522625 A CN114522625 A CN 114522625A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J6/00—Heat treatments such as Calcining; Fusing ; Pyrolysis
- B01J6/005—Fusing
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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Abstract
The invention relates to the field of molten salt melting, and discloses an in-pipe heat source type salt melting and energy storage system, which comprises a salt melting heat exchanger, wherein the salt melting heat exchanger comprises a shell, and a heat source medium pipe is arranged in the shell; the heat source medium pipe is provided with a heat source inlet and a heat source outlet, and the heat source inlet is connected with an outlet of a heat source supply system; the heat source outlet is connected with an inlet of a heat source supply system; the shell is provided with a molten salt inlet and a molten salt outlet; and a molten salt pump is arranged at the molten salt outlet, and molten salt is introduced into the cavity in the shell and outside the heat source medium pipe. The invention solves the problems that the proportion of fuel and oxidant needs to be strictly controlled and the fuel burns to generate pollutants in high-temperature molten salt.
Description
Technical Field
The invention relates to the field of molten salt melting, in particular to an in-pipe heat source type molten salt and an energy storage system.
Background
At present, the salt melting system can be divided into an in-pipe molten salt type and an in-pipe smoke type salt melting system according to the relative position of the molten salt and the smoke, and compared with the in-pipe molten salt type salt melting system, the in-pipe smoke type salt melting system has the advantages of preventing the molten salt from being solidified and blocked in the pipe and the like. In-pipe molten salt formation systems typically include: the feeding system and the molten salt furnace comprise a furnace body, a burner, a molten salt coil, a buffer tank, a molten salt pump and related pipelines; in-pipe flue gas desalination systems typically include: the feeding system and the molten salt furnace comprise a combustor, a flue gas coil, a pressure vessel, a stirrer, a buffer tank, a molten salt pump and related pipelines.
The prior salt dissolving technology has the following defects: because high-temperature molten salt is involved, the in-pipe molten salt type and in-pipe smoke type salt melting systems have strict requirements on the control, proportion and the like of the flow of fuel and oxidant, otherwise, heat waste and equipment damage are caused, and therefore the salt melting system related to combustion is complex; carbon dioxide, pollutant nitrogen oxide and the like are generated in the combustion process of natural gas, which is not beneficial to realizing the double-carbon target and causes environmental pollution; the existing salt dissolving system is only used when salt is initialized, and the equipment utilization rate is low.
Disclosure of Invention
The invention provides an in-tube heat source type salt dissolving and energy storage system, which aims to solve the problems that in the prior art, the proportion of fuel and oxidant needs to be strictly controlled, and pollutants are generated by fuel combustion.
The invention adopts the specific scheme that: an in-pipe heat source type salt melting and energy storage system comprises a salt melting heat exchanger, wherein the salt melting heat exchanger comprises a shell, and a heat source medium pipe is arranged in the shell; the heat source medium pipe is provided with a heat source inlet and a heat source outlet, and the heat source inlet is connected with an outlet of a heat source supply system; the heat source outlet is connected with an inlet of a heat source supply system; the shell is provided with a molten salt inlet and a molten salt outlet; and a molten salt pump is arranged at the molten salt outlet, and molten salt is introduced into the cavity in the shell and outside the heat source medium pipe.
The molten salt pump is arranged above the salt melting heat exchanger, and an inlet of the molten salt pump extends into the salt melting heat exchanger.
The energy in the heat source supply system is one of high-temperature heat conduction oil heated by solar energy in a mirror field of a photothermal power station, heat conduction oil heated by abandoning wind and photoelectric energy and the like, high-temperature molten salt heated by abandoning wind and photoelectric energy and the like, and hot air.
An electric heater is arranged in the salt melting heat exchanger.
And a self-circulation pipeline is arranged between the fused salt pump outlet and the fused salt heat exchanger.
And a filter screen is arranged in the salt melting heat exchanger.
And the outlet of the molten salt pump is connected with the molten salt storage tank through a molten salt output pipeline.
And a temperature tester, a pressure tester and a flow tester are arranged on the fused salt output pipeline.
And a valve is arranged on the molten salt output pipeline.
Molten salt is introduced into the molten salt inlet, and the molten salt is crushed by the molten salt crushing device and then enters the molten salt heat exchanger through the molten salt conveying device.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, a heat source medium pipe is arranged in a shell of a salt melting heat exchanger, a heat source inlet and a heat source outlet are arranged on the heat source medium pipe, and the heat source inlet is connected with an outlet of a heat source supply system; the heat source outlet is connected with an inlet of a heat source supply system; the shell is provided with a molten salt inlet and a molten salt outlet; the molten salt pump is arranged at the molten salt outlet, and the molten salt is introduced into the cavity in the shell and outside the heat source medium pipe, so that the effects that the heat source flows in the heat source medium pipe and the molten salt is melted outside the heat source medium pipe are realized, the problems that in the prior art, both an in-pipe molten salt type and an in-pipe smoke type salt melting system have strict requirements on the flow control, the proportion and the like of the fuel and the oxidant are solved, and the environmental problem caused by the generation of carbon dioxide and pollutant nitrogen oxide by using natural gas is avoided.
2. The molten salt pump is arranged above the salt melting heat exchanger, an inlet of the molten salt pump extends into the salt melting heat exchanger, a filter screen is arranged in the salt melting furnace, and the filter screen filters molten salt and impurity particles to prevent the particles from entering the submerged molten salt pump.
3. A self-circulation pipeline is arranged between the fused salt pump outlet and the fused salt heat exchanger. The molten salt pump enables molten salt to circulate in the molten salt heat exchanger through a self-circulation pipeline when the molten salt pump works abnormally; during normal work, high-temperature molten salt flows to the molten salt storage tank from the molten salt pump outlet, and the salt melting efficiency is high.
Drawings
FIG. 1 is a schematic structural view of the present invention;
wherein the reference numerals are respectively:
1. a molten salt crushing device; 2. a molten salt delivery device; 3. a heat source medium pipe; 4. a housing; 5. filtering with a screen; 6. an electric heater; 7. a heat source supply system; 8. a valve; 9. a temperature tester; 10. a pressure tester; 11. a flow tester; 13. a salt dissolving heat exchanger; 14. a heat source inlet; 15. a heat source outlet; 16. a molten salt inlet; 17. a molten salt outlet; 18. a self-circulation line; 19. a molten salt output pipeline; 20. a molten salt storage tank; 21. a molten salt conveying device.
Detailed Description
The present invention will be described in further detail below with reference to the attached drawings, and it should be clearly understood herein that the described embodiments are not all embodiments, but are merely illustrative and not restrictive of the present invention.
The invention provides an in-pipe heat source type salt dissolving and energy storing system, which comprises a salt dissolving heat exchanger 13, wherein the salt dissolving heat exchanger 13 comprises a shell 4, and a heat source medium pipe 3 is arranged in the shell 4; a heat source inlet 14 and a heat source outlet 15 are arranged on the heat source medium pipe 3, and the heat source inlet 14 is connected with an outlet of the heat source supply system 7; the heat source outlet 15 is connected with an inlet of the heat source supply system 7; a molten salt inlet 16 and a molten salt outlet 17 are arranged on the shell 4; and a molten salt pump 2 is arranged at the molten salt outlet 17, and molten salt is introduced into the cavity in the shell 4 and outside the heat source medium pipe 3.
According to the invention, the fused salt is introduced into the shell of the salt melting heat exchanger and out of the heat source medium pipe, and the heat source is introduced into the heat source medium pipe, so that the effects that the heat source flows in the heat source medium pipe and the fused salt is melted outside the heat source medium pipe are realized. The energy in the heat source supply system is one of high-temperature heat conduction oil heated by solar energy in a mirror field of a photo-thermal power station, heat conduction oil heated by abandoning wind and photoelectric energy and the like, high-temperature molten salt heated by abandoning wind and photoelectric energy and the like and hot air, the problem that a natural gas combustion function system needs to be additionally added in the molten salt process is avoided by adopting the heat source, and meanwhile, the problem that pollutants are generated by natural gas combustion is avoided. The hot air is high-temperature gas obtained by heating gas by electric power and fuel combustion and heating by an energy storage system, and further, the hot air can be selected from inert gases such as high-temperature nitrogen, high-temperature helium, high-temperature carbon dioxide and the like; the state of the high-temperature heat conduction oil and the high-temperature molten salt is liquid, other liquid heat conduction media can also be used as heat source media, and further other liquid heat conduction media can be selected from high-temperature water, high-temperature metal and the like.
The molten salt pump 2 is arranged above the molten salt heat exchanger 13, an inlet of the molten salt pump 2 extends into the molten salt heat exchanger 13, and the molten salt pump is convenient to transport molten salt.
An electric heater 6 is arranged in the salt dissolving heat exchanger 13. The electric heater can absorb electric energy such as abandoned electricity to heat and melt the molten salt. A self-circulation pipeline 18 is arranged between the outlet of the molten salt pump 2 and the salt melting heat exchanger 13. The outlet of the molten salt pump 2 is connected with a molten salt storage tank 20 through a molten salt output pipeline 19. The molten salt pump enables molten salt to circulate in the molten salt heat exchanger through a self-circulation pipeline when the molten salt pump works abnormally; during normal work, high-temperature molten salt flows to the molten salt storage tank from the molten salt pump outlet, and the salt melting efficiency is high.
And a filter screen 5 is arranged in the salt dissolving heat exchanger 13. The filter screen filters fused salt and foreign particles, prevents that the granule from getting into under liquid fused salt pump. And the molten salt output pipeline 19 is provided with a temperature tester 9, a pressure tester 10 and a flow tester 11. The three instruments are convenient to monitor the temperature, the pressure and the flow in the system.
And a valve 8 is arranged on the molten salt output pipeline 19. The valve is arranged to facilitate the cut-off of the flow when the operation is stopped, thereby saving the cost.
Molten salt is introduced into the molten salt inlet 16, and the molten salt is crushed by the molten salt crushing device 1 and then enters the molten salt heat exchanger 13 through the molten salt conveying device 21. After the fused salt crushing device introduces the crushed fused salt into the fused salt conveying device, the device is conveyed into the salt melting heat exchanger 13 by the conveying device, the operation is convenient, and the salt melting efficiency is high.
The invention avoids additionally introducing a complex natural gas combustion system, fully utilizes the existing heat transfer medium salt in the thermoelectric power station, simplifies the salt melting system, improves the utilization efficiency of the salt melting system, and has important application value. The system can be used for melting molten salt during salt injection, and can further store surplus energy such as solar energy, wind and light abandoning energy and the like through heat conducting oil during normal operation of the photo-thermal power station. The in-tube heat source type salt melting and energy storage system has strong adaptability, can be used as the salt melting and energy storage system, can also be used in other occasions with requirements on melting media and energy storage, and has important popularization and application values in the technical field of photo-thermal power stations and other industrial fields.
The drawings and the explanation are only for one embodiment of the present invention, but the specific protection scope of the present invention is not limited to the above explanation, and any simple replacement or change within the technical idea of the present invention and the technical solution according to the present invention should be within the protection scope of the present invention.
Claims (10)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210382887.XA CN114522625A (en) | 2022-04-12 | 2022-04-12 | In-pipe heat source type salt melting and energy storage system |
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| CN202210382887.XA CN114522625A (en) | 2022-04-12 | 2022-04-12 | In-pipe heat source type salt melting and energy storage system |
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| US20140364676A1 (en) * | 2012-02-09 | 2014-12-11 | Tongii University | System and Method for Hydrothermal Reaction |
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| CN206424915U (en) * | 2016-12-21 | 2017-08-22 | 深圳市爱能森科技有限公司 | A kind of fused salt salt dissolving stores up salt system |
| CN206522933U (en) * | 2017-01-23 | 2017-09-26 | 浙江中控太阳能技术有限公司 | A kind of thin salt system for solar energy thermal-power-generating factory |
| CN110201608A (en) * | 2019-05-24 | 2019-09-06 | 北京电力设备总厂有限公司 | A kind of high-temperature molten salt just melts system and salt dissolving method |
| CN209362454U (en) * | 2018-10-22 | 2019-09-10 | 青海爱能森新材料科技有限公司 | Automate fused salt salt dissolving system |
| CN113318675A (en) * | 2021-06-23 | 2021-08-31 | 北京蓝海翌能新能源集团有限公司 | Salt melting system of solar thermal power station based on heat conduction oil heat collection field |
| CN216987585U (en) * | 2022-04-12 | 2022-07-19 | 中国船舶重工集团新能源有限责任公司 | Intraductal heat source formula salt melting and energy storage system |
-
2022
- 2022-04-12 CN CN202210382887.XA patent/CN114522625A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4029081A (en) * | 1975-11-14 | 1977-06-14 | Strong John D | Solar energy transport system |
| US20140364676A1 (en) * | 2012-02-09 | 2014-12-11 | Tongii University | System and Method for Hydrothermal Reaction |
| CN204187872U (en) * | 2014-05-22 | 2015-03-04 | 深圳市爱能森设备技术有限公司 | A kind of energy storage type solar hot-water boiler adopting Molten Salt Heat Transfer heat accumulation |
| CN105233760A (en) * | 2015-11-03 | 2016-01-13 | 百吉瑞（天津）新能源有限公司 | System and method for initially melting solid salt |
| CN106123595A (en) * | 2016-06-23 | 2016-11-16 | 浙江中控太阳能技术有限公司 | A kind of fused salt melting systems and method |
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| CN106362649A (en) * | 2016-10-09 | 2017-02-01 | 深圳市爱能森科技有限公司 | Movable salt dissolving system |
| CN106390865A (en) * | 2016-10-09 | 2017-02-15 | 深圳市爱能森科技有限公司 | Movable continuous salt dissolving system and salt dissolving method thereof |
| CN206207766U (en) * | 2016-10-24 | 2017-05-31 | 中国华能集团清洁能源技术研究院有限公司 | A kind of fused salt salt dissolving system of use line-focusing solar thermal-arrest |
| CN206424915U (en) * | 2016-12-21 | 2017-08-22 | 深圳市爱能森科技有限公司 | A kind of fused salt salt dissolving stores up salt system |
| CN206522933U (en) * | 2017-01-23 | 2017-09-26 | 浙江中控太阳能技术有限公司 | A kind of thin salt system for solar energy thermal-power-generating factory |
| CN209362454U (en) * | 2018-10-22 | 2019-09-10 | 青海爱能森新材料科技有限公司 | Automate fused salt salt dissolving system |
| CN110201608A (en) * | 2019-05-24 | 2019-09-06 | 北京电力设备总厂有限公司 | A kind of high-temperature molten salt just melts system and salt dissolving method |
| CN113318675A (en) * | 2021-06-23 | 2021-08-31 | 北京蓝海翌能新能源集团有限公司 | Salt melting system of solar thermal power station based on heat conduction oil heat collection field |
| CN216987585U (en) * | 2022-04-12 | 2022-07-19 | 中国船舶重工集团新能源有限责任公司 | Intraductal heat source formula salt melting and energy storage system |
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