CN105542726A - Mixed molten salt heat transfer and storage working medium and preparing method and application thereof - Google Patents
Mixed molten salt heat transfer and storage working medium and preparing method and application thereof Download PDFInfo
- Publication number
- CN105542726A CN105542726A CN201610093903.8A CN201610093903A CN105542726A CN 105542726 A CN105542726 A CN 105542726A CN 201610093903 A CN201610093903 A CN 201610093903A CN 105542726 A CN105542726 A CN 105542726A
- Authority
- CN
- China
- Prior art keywords
- heat transfer
- working medium
- molten salt
- mixed molten
- storage
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/08—Materials not undergoing a change of physical state when used
- C09K5/10—Liquid materials
- C09K5/12—Molten materials, i.e. materials solid at room temperature, e.g. metals or salts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
Abstract
The invention belongs to the field of the energy storage material mixed molten salt, and particularly relates to a mixed molten salt heat transfer and storage working medium. The mixed molten salt heat transfer and storage working medium is characterized by being prepared from 13.4 wt% of Ca(NO3)2, 56-60 wt% of KNO3, 6-15 wt% of NaNO3, 9-14 wt% of LiNO3 and 8-13 wt% of K2CO3, the melting point of the mixed molten salt heat transfer and storage working medium is 102 DEG C, and the boiling point of the mixed molten salt heat transfer and storage working medium is 623 DEG C. The application of the mixed molten salt heat transfer and storage working medium is characterized in that the mixed molten salt heat transfer and storage working medium is applied to medium-high-temperature heat transfer and storage fields including solar heat power generation energy storage, wind and photoelectricity curtailment and 'coal to electricity' thermal storage heating and industrial waste heat recovery and storage. The constituents for preparing mixed molten salt are low in cost, and the preparing process is extremely simple. The thermophysical property of the mixed molten salt is quite stable, separation of any constituent does not occur in use, heat transfer property is high in the liquid state temperature zone, and saturated vapor pressure is lower than two atmospheres. The corrosion capacity to metal of the working medium is low.
Description
Technical field
The invention belongs to energy storage material fused salt mixt field, particularly relate to a kind of fused salt mixt heat transfer accumulation of heat working medium, preparation method and application thereof.
Background technology
The fields such as solar energy thermal-power-generating, nuclear power, middle high-temperature heat accumulation, heat supply and chemical industry, drying, process industrial all need middle high temperature heat transfer accumulation of heat working medium.One of application aspect that middle high temperature heat transfer working medium is main, namely solar energy thermal-power-generating technology is developed so far from the eighties in last century, employ and comprise water and steam, air or nitrogen, liquid metal, the multiple heat transfer accumulation of heat such as thermal oil and melting salt working medium, because melting salt has higher use temperature, high thermal stability, high specific heat capacity, high convective heat-transfer coefficient, low viscosity, low saturated vapor pressure, the advantage of low price etc. " four high three low ", be subject to domestic and international expert to pay much attention to, it is one of main application and development direction of current solar heat power generation system heat transfer accumulation of heat working medium.
One-component fused salt fusing point is too high, cannot meet the demand of heat-transfer working medium to fusing point.Several fused salt significantly can reduce the fusing point of eutectic molten salt mixture after mixing and forming eutectic fused salt mixt, and can in liquid warm area steady running, and the fused salt working medium therefore in industrial application is all this mixing eutectic fused salt.The fields such as solar energy thermal-power-generating, nuclear power, middle high-temperature heat accumulation, heat supply and chemical industry, drying, process industrial are all not quite similar to the requirement of heat transfer accumulation of heat working medium, the invention provides a kind of fused salt mixt with the diversified middle high temperature heat transfer accumulation of heat working medium demand of satisfied industry.
Summary of the invention
In order to promote the application of fused salt mixt in middle high temperature heat transfer hold over system, the invention provides a kind of fused salt mixt heat transfer accumulation of heat working medium, preparation method and application thereof.
In order to achieve the above object, the technical solution used in the present invention is, a kind of fused salt mixt heat transfer accumulation of heat working medium, is characterized in that, by Ca (NO
3)
2, KNO
3, NaNO
3, LiNO
3and K
2cO
3composition.
The quality proportioning of each component is Ca (NO
3)
2: 13.4wt%; KNO
3: 56 ~ 60wt%; NaNO
3: 6 ~ 15wt%; LiNO
3: 9 ~ 14wt%; K
2cO
3: 8 ~ 13wt%, its fusing point 102 DEG C, boiling point 623 DEG C.
A preparation method for fused salt mixt heat transfer accumulation of heat working medium, the method step is as follows:
(1) first by Ca (NO to be mixed
3)
2, KNO
3, NaNO
3, LiNO
3and K
2cO
3each material pulverizes grinding respectively, makes Solids Particle Diameter be less than 3cm, in proportion each material is put into stainless steel vessel, mix and blend;
(2) fused salt mixt is progressively heated, and do not stop to be stirred to about 120 DEG C and keep 10 minutes, by the water evaporates in fused salt mixt simultaneously;
(3) continue to be warming up to about 200 DEG C and maintain this temperature, strengthening stirring dynamics, by Ca (NO
3)
2in crystal water removing (nitrocalcite generally containing 4 crystal water), after water vapour is got rid of completely, stop stirring after fused salt cooling, namely this mixing eutectic fused salt has newly configured.
An application for fused salt mixt heat transfer accumulation of heat working medium, is characterized in that, be applied to solar energy thermal-power-generating energy storage, abandons wind and abandon high temperature heat transfer accumulation of heat field in photoelectricity and " coal changes electricity " storage heating or industrial afterheat recovery storage etc.
Compared with prior art, the present invention has following beneficial effect:
1, the composition cost of the preparation of fused salt mixt of the present invention is low, blending process is extremely simple.
2, fused salt mixt of the present invention hot physical property performance is highly stable, there will not be the separation phenomenon of a certain composition in use procedure, has good heat transfer property at liquid warm area, and saturated vapour pressure is lower than 2 normal atmosphere.
3, working medium of the present invention is little to metal protection.
Embodiment
Below to the present invention is described further in conjunction with the embodiments.
Embodiment: a kind of fused salt mixt heat transfer accumulation of heat working medium, fills a prescription by Ca (NO
3)
2, KNO
3, NaNO
3, LiNO
3and K
2cO
3composition;
The quality proportioning of each component is Ca (NO
3)
2: 13.4wt%; KNO
3: 56 ~ 60wt%; NaNO
3: 6 ~ 15wt%; LiNO
3: 9 ~ 14wt%; K
2cO
3: 8 ~ 13wt%.
A preparation method for fused salt mixt heat transfer accumulation of heat working medium, the method step is as follows:
(1) first by Ca (NO to be mixed
3)
2, KNO
3, NaNO
3, LiNO
3and K
2cO
3each material pulverizes grinding respectively, makes Solids Particle Diameter be less than 3cm, in proportion each material is put into stainless steel vessel, mix and blend;
(2) fused salt mixt is progressively heated, and do not stop to be stirred to about 120 DEG C and keep 10 minutes, by the water evaporates in fused salt mixt simultaneously;
(3) continue to be warming up to about 200 DEG C and maintain this temperature, strengthening stirring dynamics, by Ca (NO
3)
2in crystal water removing (nitrocalcite generally containing 4 crystal water), after water vapour is got rid of completely, stop stirring after fused salt cooling, namely this mixing eutectic fused salt has newly configured.
An application for fused salt mixt heat transfer accumulation of heat working medium, can be applicable to solar energy thermal-power-generating energy storage, abandons wind and abandon high temperature heat transfer accumulation of heat field in photoelectricity and " coal changes electricity " storage heating or industrial afterheat recovery storage etc.
Protection scope of the present invention is not limited to the above embodiments, everyly in technical foundation of the present invention, makes equivalents, all falls within protection scope of the present invention.
Claims (3)
1. a fused salt mixt heat transfer accumulation of heat working medium, is characterized in that, by Ca (NO
3)
2, KNO
3, NaNO
3, LiNO
3and K
2cO
3composition;
The quality proportioning of each component is Ca (NO
3)
2: 13.4wt%; KNO
3: 56 ~ 60wt%; NaNO
3: 6 ~ 15wt%; LiNO
3: 9 ~ 14wt%; K
2cO
3: 8 ~ 13wt%.
2. the application of a kind of fused salt mixt heat transfer accumulation of heat working medium according to claim 1, is characterized in that, be applied to solar energy thermal-power-generating energy storage, abandons the middle high temperature heat transfer accumulation of heat field that wind abandons photoelectricity and " coal changes electricity " storage heating or industrial afterheat recovery storage.
3. the preparation method of a kind of fused salt mixt heat transfer accumulation of heat working medium according to claim 1, it is characterized in that, the method step is as follows:
(1) first by Ca (NO to be mixed
3)
2, KNO
3, NaNO
3, LiNO
3and K
2cO
3each material pulverizes grinding respectively, makes Solids Particle Diameter be less than 3cm, in proportion each material is put into stainless steel vessel, mix and blend;
(2) fused salt mixt is progressively heated, and do not stop to be stirred to about 120 DEG C and keep 10 minutes, by the water evaporates in fused salt mixt simultaneously;
(3) continue to be warming up to about 200 DEG C and maintain this temperature, strengthening stirring dynamics, by Ca (NO
3)
2in crystal water removing (nitrocalcite generally containing 4 crystal water), after water vapour is got rid of completely, stop stirring after fused salt cooling, namely this mixing eutectic fused salt has newly configured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610093903.8A CN105542726A (en) | 2016-02-18 | 2016-02-18 | Mixed molten salt heat transfer and storage working medium and preparing method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610093903.8A CN105542726A (en) | 2016-02-18 | 2016-02-18 | Mixed molten salt heat transfer and storage working medium and preparing method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105542726A true CN105542726A (en) | 2016-05-04 |
Family
ID=55822298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610093903.8A Pending CN105542726A (en) | 2016-02-18 | 2016-02-18 | Mixed molten salt heat transfer and storage working medium and preparing method and application thereof |
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| Country | Link |
|---|---|
| CN (1) | CN105542726A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106281254A (en) * | 2016-07-21 | 2017-01-04 | 北京工业大学 | A kind of two end number mixing Molten Salt Heat Transfer heat storage medium |
| CN109530386A (en) * | 2018-10-24 | 2019-03-29 | 华中科技大学 | A method of based on fused salt multistage upgrading mixing organic solid castoff |
| US11740031B1 (en) | 2022-03-04 | 2023-08-29 | Battelle Savannah River Alliance, Llc | High temperature thermochemical energy storage materials |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074040A (en) * | 2013-01-01 | 2013-05-01 | 北京工业大学 | Mixed molten salt as heat transfer and storage medium low in melting point |
| CN103259028A (en) * | 2013-04-18 | 2013-08-21 | 中国科学院上海微系统与信息技术研究所 | Molten nitrate salt and application thereof |
| CN103441312A (en) * | 2013-08-16 | 2013-12-11 | 中国科学院上海微系统与信息技术研究所 | (LiNO3-KNO3-KNO2-Ca(NO3)2) quaternary nitric acid eutectic salt and application thereof |
| CN104610926A (en) * | 2013-01-01 | 2015-05-13 | 北京工业大学 | Heat transfer and storage medium containing low melting point mixed molten salt |
-
2016
- 2016-02-18 CN CN201610093903.8A patent/CN105542726A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074040A (en) * | 2013-01-01 | 2013-05-01 | 北京工业大学 | Mixed molten salt as heat transfer and storage medium low in melting point |
| CN104610926A (en) * | 2013-01-01 | 2015-05-13 | 北京工业大学 | Heat transfer and storage medium containing low melting point mixed molten salt |
| CN103259028A (en) * | 2013-04-18 | 2013-08-21 | 中国科学院上海微系统与信息技术研究所 | Molten nitrate salt and application thereof |
| CN103441312A (en) * | 2013-08-16 | 2013-12-11 | 中国科学院上海微系统与信息技术研究所 | (LiNO3-KNO3-KNO2-Ca(NO3)2) quaternary nitric acid eutectic salt and application thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106281254A (en) * | 2016-07-21 | 2017-01-04 | 北京工业大学 | A kind of two end number mixing Molten Salt Heat Transfer heat storage medium |
| CN109530386A (en) * | 2018-10-24 | 2019-03-29 | 华中科技大学 | A method of based on fused salt multistage upgrading mixing organic solid castoff |
| US11740031B1 (en) | 2022-03-04 | 2023-08-29 | Battelle Savannah River Alliance, Llc | High temperature thermochemical energy storage materials |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160504 |