CN107057654A - A kind of mixed nitrate heat transfer accumulation of heat working medium, preparation method and applications - Google Patents
A kind of mixed nitrate heat transfer accumulation of heat working medium, preparation method and applications Download PDFInfo
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- CN107057654A CN107057654A CN201610090060.6A CN201610090060A CN107057654A CN 107057654 A CN107057654 A CN 107057654A CN 201610090060 A CN201610090060 A CN 201610090060A CN 107057654 A CN107057654 A CN 107057654A
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- heat
- working medium
- fused salt
- heat transfer
- accumulation
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- 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
Abstract
The invention belongs to energy storage material fused salt mixt field, more particularly to a kind of mixed nitrate heat transfer accumulation of heat working medium, it is characterised in that by Ca (NO3)2、KNO3、NaNO3And LiNO3Composition；The quality proportioning of each component is Ca (NO3)2：13.4wt%；KNO3：55 60wt%；NaNO3：9 20wt%；LiNO3：9 20wt%, 84 DEG C of its fusing point, 612 DEG C of boiling point.A kind of application of mixed nitrate heat transfer accumulation of heat working medium, it is characterised in that applied to solar energy thermal-power-generating energy storage, abandon the high temperature heat transfer accumulation of heat field that wind abandons photoelectricity and " coal changes electricity " storage heating or industrial afterheat recovery storage.The composition cost of the preparation of fused salt mixt of the present invention is low, preparing process is extremely simple；The hot physical property performance of fused salt mixt of the present invention is highly stable, is not in the segregation phenomenon of a certain composition during use, has good heat transfer property, and less than 2 atmospheric pressure of saturated vapour pressure in liquid warm area；The working medium of the present invention is small to metal protection.
Description
Technical field
The invention belongs to energy storage material fused salt mixt field, more particularly to a kind of mixed nitrate heat transfer accumulation of heat work
Matter, preparation method and applications.
Background technology
The neck such as solar energy thermal-power-generating, nuclear power, high temperature accumulation of heat, heat supply and chemical industry, drying, process industrial
Domain is required to high temperature heat transfer accumulation of heat working medium.One of main application aspect of high temperature heat-transfer working medium, the i.e. sun
Can hot generation technology be developed so far from last century the eighties, used including water and steam, air or nitrogen,
A variety of heat transfer accumulation of heat working medium such as liquid metal, conduction oil and fuse salt, because fuse salt has higher use
It is temperature, high thermal stability, high specific heat capacity, high convective heat-transfer coefficient, low viscosity, low saturated vapor pressure, low
The advantage of price etc. " four high three is low ", is paid much attention to by domestic and international expert, is current solar energy thermal-power-generating
One of the main application of system heat transfer accumulation of heat working medium and developing direction.
One-component fused salt fusing point is too high, it is impossible to meet demand of the heat-transfer working medium to fusing point.Several fused salt mixing
Get up to be formed and the fusing point of eutectic molten salt mixture can be significantly reduced after eutectic fused salt mixt, and can be in liquid temperature
Area's stable operation, therefore fused salt working medium in commercial Application is all this mixing eutectic fused salt.Solar heat is sent out
The field such as electricity, nuclear power, high temperature accumulation of heat, heat supply and chemical industry, drying, process industrial is to heat transfer accumulation of heat
The requirement of working medium is not quite similar, the invention provides a kind of fused salt mixt to meet industrial diversified high temperature
Heat transfer accumulation of heat working medium demand.
The content of the invention
It is mixed the invention provides one kind in order to promote application of the fused salt mixt in high temperature conducts heat hold over system
Close nitrate heat transfer accumulation of heat working medium and its application.
In order to achieve the above object, the technical solution adopted by the present invention is, a kind of mixed nitrate conducts heat accumulation of heat
Working medium, it is characterised in that by Ca (NO3)2、KNO3、NaNO3And LiNO3Composition；
The quality proportioning of each component is Ca (NO3)2：13.4wt%；KNO3：55-60wt%；NaNO3：9-20wt%；
LiNO3：9-20wt%, 84 DEG C of its fusing point, 612 DEG C of boiling point.
A kind of preparation method of mixed nitrate heat transfer accumulation of heat working medium, the preparation method step is as follows：
(1) first by Ca (NO to be mixed3)2、KNO3、NaNO3And LiNO3Each material is crushed respectively to be ground
Mill, makes Solids Particle Diameter be less than 3cm, each material is put into rustless steel container in proportion, mixes；
(2) fused salt mixt is progressively heated, and does not stop stirring simultaneously to 120 DEG C or so and kept for 10 minutes,
Moisture evaporation in fused salt mixt is fallen；
(3) 200 DEG C or so are continuously heating to and this temperature is maintained, stirring dynamics is increased, by Ca (NO3)2In
The crystallization water remove (calcium nitrate typically contains 4 crystallizations water), after vapor completely exclude after, stop stirring
After after fused salt cooling, this new mixing eutectic fused salt is that configuration is completed.
A kind of application of mixed nitrate heat transfer accumulation of heat working medium, it is characterised in that applied to solar energy thermal-power-generating
Energy storage, abandon wind abandon photoelectricity and " coal changes electricity " storage heating or industrial afterheat recovery storage etc. high temperature heat transfer accumulation of heat neck
Domain.
Compared with prior art, the present invention has the advantages that：
1st, the composition cost of the preparation of fused salt mixt of the present invention is low, preparing process is extremely simple.
2nd, the hot physical property performance of fused salt mixt of the invention is highly stable, is not in a certain composition during use
Segregation phenomenon, there is good heat transfer property in liquid warm area, and less than 2 air of saturated vapour pressure
Pressure.
3rd, working medium of the invention is small to metal protection.
Embodiment
Below to the present invention is described further in conjunction with the embodiments.
Embodiment：A kind of mixed nitrate heat transfer accumulation of heat working medium, by Ca (NO3)2、KNO3、NaNO3With
LiNO3Composition；The quality proportioning of each component is Ca (NO3)2：13.4wt%；KNO3：55-60wt%；NaNO3：
9-20wt%；LiNO3：9-20wt%.
A kind of mixed nitrate heat transfer accumulation of heat working medium, the preparation method step is as follows：
(1) first by Ca (NO to be mixed3)2、KNO3、NaNO3And LiNO3Each material is crushed respectively to be ground
Mill, makes Solids Particle Diameter be less than 3cm, each material is put into rustless steel container in proportion, mixes；
(2) fused salt mixt is progressively heated, and does not stop stirring simultaneously to 120 DEG C or so and kept for 10 minutes,
Moisture evaporation in fused salt mixt is fallen；
(3) 200 DEG C or so are continuously heating to and this temperature is maintained, stirring dynamics is increased, by Ca (NO3)2In
The crystallization water remove, after vapor completely exclude after, stop stirring after fused salt cooling after, this new mixing
Eutectic fused salt is that configuration is completed.
A kind of mixed nitrate conducts heat the application of accumulation of heat working medium, applied to solar energy thermal-power-generating energy storage, abandons wind and abandons
The high temperature heat transfer accumulation of heat such as photoelectricity and " coal changes electricity " storage heating or industrial afterheat recovery storage field.
Protection scope of the present invention is not limited to the above embodiments, every in technical foundation of the present invention
Equivalents are made, are each fallen within protection scope of the present invention.
Claims (3)
- The accumulation of heat working medium 1. a kind of mixed nitrate conducts heat, it is characterised in that by Ca (NO3)2、KNO3、NaNO3 And LiNO3Composition；The quality proportioning of each component is Ca (NO3)2：13.4wt%；KNO3：55-60wt%；NaNO3：9-20wt%； LiNO3：9-20wt%.
- The application of accumulation of heat working medium 2. a kind of mixed nitrate according to claim 1 conducts heat, it is characterised in that Applied to solar energy thermal-power-generating energy storage, abandon wind and abandon photoelectricity and " coal changes electricity " storage heating or industrial afterheat recovery The high temperature heat transfer accumulation of heat field of storage.
- The preparation method of accumulation of heat working medium 3. a kind of mixed nitrate according to claim 1 conducts heat, its feature exists In this method step is as follows：(1) first by Ca (NO to be mixed3)2、KNO3、NaNO3And LiNO3Each material is crushed respectively to be ground Mill, makes Solids Particle Diameter be less than 3cm, each material is put into rustless steel container in proportion, mixes；(2) fused salt mixt is progressively heated, and does not stop stirring simultaneously to 120 DEG C or so and kept for 10 minutes, Moisture evaporation in fused salt mixt is fallen；(3) 200 DEG C or so are continuously heating to and this temperature is maintained, stirring dynamics is increased, by Ca (NO3)2In The crystallization water remove (calcium nitrate typically contains 4 crystallizations water), after vapor completely exclude after, stop stirring After after fused salt cooling, this new mixing eutectic fused salt is that configuration is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610090060.6A CN107057654A (en) | 2016-02-18 | 2016-02-18 | A kind of mixed nitrate heat transfer accumulation of heat working medium, preparation method and applications |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610090060.6A CN107057654A (en) | 2016-02-18 | 2016-02-18 | A kind of mixed nitrate heat transfer accumulation of heat working medium, preparation method and applications |
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| CN107057654A true CN107057654A (en) | 2017-08-18 |
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| CN201610090060.6A Pending CN107057654A (en) | 2016-02-18 | 2016-02-18 | A kind of mixed nitrate heat transfer accumulation of heat working medium, preparation method and applications |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015520250A (en) * | 2012-04-10 | 2015-07-16 | ビーエーエスエフ ソシエタス・ヨーロピアＢａｓｆ Ｓｅ | Nitrate compositions containing alkali metal carbonates and their use as heat or heat storage media |
| CN105199677A (en) * | 2015-10-30 | 2015-12-30 | 百吉瑞（天津）新能源有限公司 | Low-melting-point mixed molten salt heat transfer and thermal storage working medium and application thereof |
-
2016
- 2016-02-18 CN CN201610090060.6A patent/CN107057654A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015520250A (en) * | 2012-04-10 | 2015-07-16 | ビーエーエスエフ ソシエタス・ヨーロピアＢａｓｆ Ｓｅ | Nitrate compositions containing alkali metal carbonates and their use as heat or heat storage media |
| CN105199677A (en) * | 2015-10-30 | 2015-12-30 | 百吉瑞（天津）新能源有限公司 | Low-melting-point mixed molten salt heat transfer and thermal storage working medium and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王如竹、翟晓强: "《绿色建筑能源系统》", 31 October 2013, 上海交通大学出版社 * |
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Application publication date: 20170818 |
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| RJ01 | Rejection of invention patent application after publication |