CN107090273A - A kind of fused salt mixt heat transfer accumulation of heat working medium, preparation method and applications - Google Patents
A kind of fused salt mixt heat transfer accumulation of heat working medium, preparation method and applications Download PDFInfo
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- CN107090273A CN107090273A CN201610090059.3A CN201610090059A CN107090273A CN 107090273 A CN107090273 A CN 107090273A CN 201610090059 A CN201610090059 A CN 201610090059A CN 107090273 A CN107090273 A CN 107090273A
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- fused salt
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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
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Abstract
The invention belongs to energy storage material fused salt mixt field, more particularly to a kind of fused salt mixt heat transfer accumulation of heat working medium, it is characterised in that by Ca (NO3)2、KNO3、NaNO3And LiNO3Composition, its quality proportioning is Ca (NO3)2：8.0wt%；KNO3：55 60wt%；NaNO3：7 12wt%；LiNO3：18 25wt%, 79 DEG C of its fusing point, 595 DEG C of boiling point.A kind of fused salt mixt conducts heat the application of accumulation of heat working medium, it is characterised in that it, which can be applied to solar energy thermal-power-generating energy storage, abandon wind abandons the high temperature heat transfer accumulation of heat such as photoelectricity and " coal changes electricity " storage heating or industrial afterheat recovery storage field.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, be not in the segregation phenomenon of a certain composition during use, there are 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 fused salt mixt heat transfer accumulation of heat working medium,
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 Molten Salt Heat Transfer accumulation of heat working medium.
In order to achieve the above object, the technical solution adopted by the present invention is, a kind of fused salt mixt conducts heat accumulation of heat work
Matter, it is characterised in that by Ca (NO3)2、KNO3、NaNO3And LiNO3Composition；
The quality proportioning of each component is：Ca(NO3)2：8.0wt%；KNO3：55-60wt%；NaNO3：7-12wt%；
LiNO3：18-25wt%, 79 DEG C of its fusing point, 595 DEG C of boiling point.
A kind of preparation method of fused salt mixt heat transfer accumulation of heat working medium, this method step is as follows：
(1) first by Ca (NO to be mixed3)2、KNO3、NaNO3And LiNO3Material distinguishes attrition grinding,
Solids Particle Diameter is less than 3cm, each material is put into rustless steel container in proportion, mix；
(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 fused salt mixt heat transfer accumulation of heat working medium, it is characterised in that can be applied to solar energy thermal-power-generating storage
Wind, can be abandoned and abandon the high temperature heat transfer accumulation of heat such as photoelectricity and " coal changes electricity " storage heating or industrial afterheat recovery storage
Field.
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 fused salt mixt 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)2：8.0wt%；KNO3：55-60wt%；NaNO3：7-12wt%；
LiNO3：18-25wt%.
A kind of preparation method of fused salt mixt heat transfer accumulation of heat working medium, method and step is as follows：
(1) first by Ca (NO to be mixed3)2、KNO3、NaNO3And LiNO3Material distinguishes attrition grinding,
Solids Particle Diameter is less than 3cm, each material is put into rustless steel container in proportion, mix；
(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 application of fused salt mixt heat transfer accumulation of heat working medium, it is characterised in that can be 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 store
Hot 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 fused salt mixt conducts heat, it is characterised in that by Ca (NO3)2、KNO3、NaNO3And LiNO3 Composition；The quality proportioning of each component is：Ca(NO3)2：8.0wt%；KNO3：55-60wt%；NaNO3：7-12wt%； LiNO3：18-25wt%.
- The application of accumulation of heat working medium 2. a kind of fused salt mixt according to claim 1 conducts heat, it is characterised in that should For solar energy thermal-power-generating energy storage, abandon wind abandon photoelectricity and " coal changes electricity " storage heating or industrial afterheat recovery storage The high temperature heat transfer accumulation of heat field deposited.
- The preparation method of accumulation of heat working medium 3. a kind of fused salt mixt according to claim 1 conducts heat, it is characterised in that This method step is as follows：(1) first by Ca (NO to be mixed3)2、KNO3、NaNO3And LiNO3Material distinguishes attrition grinding, Solids Particle Diameter is less than 3cm, each material is put into rustless steel container in proportion, mix；(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.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610090059.3A CN107090273A (en) | 2016-02-18 | 2016-02-18 | A kind of fused salt mixt heat transfer accumulation of heat working medium, preparation method and applications |
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| CN201610090059.3A CN107090273A (en) | 2016-02-18 | 2016-02-18 | A kind of fused salt mixt heat transfer accumulation of heat working medium, preparation method and applications |
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| CN107090273A true CN107090273A (en) | 2017-08-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109796940A (en) * | 2019-02-22 | 2019-05-24 | 广州特种承压设备检测研究院 | A kind of mixed chloride fused salt of high thermal conductivity and its preparation method and application |
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 |
| CN103743273A (en) * | 2014-01-13 | 2014-04-23 | 北京工业大学 | Molten salt gravity-assisted heat pipe |
| CN104610927A (en) * | 2015-02-03 | 2015-05-13 | 王军涛 | Low-melting-point mixed fused salt heat storage and heat transfer material and preparation method 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 CN201610090059.3A patent/CN107090273A/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 |
| CN103743273A (en) * | 2014-01-13 | 2014-04-23 | 北京工业大学 | Molten salt gravity-assisted heat pipe |
| CN104610927A (en) * | 2015-02-03 | 2015-05-13 | 王军涛 | Low-melting-point mixed fused salt heat storage and heat transfer material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109796940A (en) * | 2019-02-22 | 2019-05-24 | 广州特种承压设备检测研究院 | A kind of mixed chloride fused salt of high thermal conductivity and its preparation method and application |
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