CN105838338A - Nano mixed molten salt heat transfer and storage medium and preparation method thereof - Google Patents
Nano mixed molten salt heat transfer and storage medium and preparation method thereof Download PDFInfo
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- CN105838338A CN105838338A CN201610261744.8A CN201610261744A CN105838338A CN 105838338 A CN105838338 A CN 105838338A CN 201610261744 A CN201610261744 A CN 201610261744A CN 105838338 A CN105838338 A CN 105838338A
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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 discloses a nano mixed molten salt heat transfer and storage medium and a preparation method thereof. The nano mixed molten salt heat transfer and storage medium is prepared from the following raw materials in parts by weight: 40-60 parts of potassium chloride, 20-40 parts of zinc chloride, 10-30 parts of lithium chloride, 3-7 parts of barium nitrate, 3-7 parts of cesium nitrate and 0.6-1.6 parts of nano metal oxide. The nano mixed molten salt heat transfer and storage medium is low in preparation cost and simple in preparation process. The mixed molten salt has quite stable thermophysical property and has the advantages of high heat transfer coefficient, high operating temperature, low corrosivity, low steam pressure, environment friendliness, good safety, and the like. The nano mixed molten salt heat transfer and storage medium can conduce to effectively enhancing the heat storage capacity and heat transfer efficiency of a system and reducing the solar thermal power generation and industrial heat storage costs and has a wide range of application.
Description
Technical field
The present invention relates to energy storage material fused salt mixt field, particularly relate to a kind of nanometer fused salt mixt heat transfer and store
Thermal medium and preparation method thereof.
Background technology
The energy is the basis that the mankind depend on for existence, is the pillar of national economy and social development, is also economical
The guarantee advanced with society.Along with the progress of mankind's technology, expanding economy, the mankind are to the energy
Demand is increasing.The conventional energy resource relied primarily on for a long time as the past mankind, coal, oil and sky
But so the increasing storage capacity of yield of gas reduces the most day by day so that following utilization of energy situation becomes
Obtain the most nervous.Meanwhile, during utilizing conventional energy resource, inevitably bring the pollution to environment,
Affect the living environment of the mankind and destroy the ecological balance of the Nature.Environment and energy problem have become as and work as
Two big subject matters of modern World Focusing.
Solar energy thermal-power-generating is the big event in Solar use, and it is most possibly with wind-power electricity generation, water
Power generating equally produces a large amount of electric energy that can compete mutually with Fossil fuel it is considered to be renewable energy
The most promising generation mode in the generating of source.Therefore, heat transfer hold over system is connected to absorption solar energy and turns
Changing the link that solar energy is electric energy, heat transfer accumulation of heat is that the key link in solar heat power generation system is the heaviest
Want.Wherein, fuse salt has the brightest due to it relative to conduction oil and other media as heat transfer heat storage medium
Aobvious advantage, receives the attention of countries in the world research institution.Fuse salt is ion melt.Fuse salt
Maximum feature is ion melt, forms the liquid of fuse salt by anion and cation composition, alkali metal halogen
Compound forms simple ion melt, and bivalence or Tricationic or complicated anion such as nitrate anion from
Son, carbanion and sulfate ion the most easily form the complex ion of complexity.Owing to being ion melt,
Therefore fuse salt has good electric conductivity, and its conductivity compares electrolyte solution.
The invention provides a kind of nanometer fused salt mixt heat transfer heat storage medium, specific heat is high, fusing point is low, thermal conductance
Rate is low.
Summary of the invention
For above-mentioned deficiency present in prior art, one of the technical problem to be solved is to carry
For a kind of nanometer fused salt mixt heat transfer heat storage medium.
The two of the technical problem to be solved are to provide a kind of nanometer fused salt mixt heat transfer heat storage medium
Preparation method.
The present invention seeks to be achieved through the following technical solutions:
A kind of nanometer fused salt mixt heat transfer heat storage medium, is prepared from by the raw material of following weight parts: chlorination
Potassium 40-60 part, zinc chloride 20-40 part, lithium chloride 10-30 part, barium nitrate 3-7 part, cesium nitrate 3-7
Part, nano-metal-oxide 0.6-1.6 part.
Preferably, described nano-metal-oxide is a kind of in magnesium oxide, titanium dioxide, zirconium dioxide
Or multiple mixture.
It is highly preferred that described nano-metal-oxide is by magnesium oxide, titanium dioxide, zirconium dioxide mixing
Forming, described magnesium oxide, titanium dioxide, the mass ratio of zirconium dioxide are (1-3): (1-3): (1-3).
Present invention also offers above-mentioned nanometer fused salt mixt heat transfer heat storage medium preparation method, by potassium chloride,
Zinc chloride, lithium chloride, barium nitrate, cesium nitrate are put into and are heated to molten condition in Muffle furnace, add nanometer
Metal-oxide, stirs, cooling.
Concrete, in the present invention:
Potassium chloride, No. CAS: 7447-40-7.
Zinc chloride, No. CAS: 7646-85-7.
Lithium chloride, No. CAS: 7447-41-8.
Barium nitrate, No. CAS: 10022-31-8.
Cesium nitrate, No. CAS: 7789-18-6.
Magnesium oxide, molecular formula: MgO, No. CAS: 1309-48-4, particle diameter 20-40nm.
Titanium dioxide, No. CAS: 1317-80-2, particle diameter 20-40nm.
Zirconium dioxide, No. CAS: 1314-23-4, particle diameter 20-40nm.
One nanometer fused salt mixt of the present invention heat transfer heat storage medium, preparation low cost, preparing process are simple.
The fused salt mixt hot physical property performance of the present invention is highly stable, has that heat transfer coefficient is high, operating temperature is high, rotten
The advantages such as erosion property is little, steam pressure is low, environmental friendliness, safety are good.The present invention can effectively strengthen system
Heat storage capacity and heat transfer efficiency, reduce solar energy thermal-power-generating and industry accumulation of heat cost, have wide range of applications.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described further, the following stated, only to the present invention
Preferred embodiment, not does the restriction of other forms, any technology being familiar with this specialty to the present invention
Personnel are changed to the Equivalent embodiments changed on an equal basis possibly also with the technology contents of the disclosure above.Every
Without departing from the present invention program content, any letter following example done according to the technical spirit of the present invention
Single amendment or equivalent variations, all fall within protection scope of the present invention.
Embodiment 1
Weigh each raw material (weight portion): 50 parts of potassium chloride, zinc chloride 30 parts, lithium chloride 20 parts, nitre
Acid barium 5 parts, cesium nitrate 5 parts, nano-metal-oxide 0.9 part.
Described nano-metal-oxide is 1:1 in mass ratio by magnesium oxide, titanium dioxide, zirconium dioxide:
1 is uniformly mixed and obtains.
Prepared by nanometer fused salt mixt heat transfer heat storage medium:
Muffle is put into after potassium chloride, zinc chloride, lithium chloride, barium nitrate, cesium nitrate being uniformly mixed
Being heated to molten condition in stove, add nano-metal-oxide, use magnetic stirring apparatus, rotating speed is 400
Rev/min, stir 1 hour mix homogeneously, be cooled to 25 DEG C.Obtain the nanometer fused salt mixt of embodiment 1
Heat transfer heat storage medium.
Embodiment 2
Weigh each raw material (weight portion): 50 parts of potassium chloride, zinc chloride 30 parts, lithium chloride 20 parts, nitre
Acid barium 10 parts, nano-metal-oxide 0.9 part.
Described nano-metal-oxide is 1:1 in mass ratio by magnesium oxide, titanium dioxide, zirconium dioxide:
1 is uniformly mixed and obtains.
Prepared by nanometer fused salt mixt heat transfer heat storage medium:
Put into after potassium chloride, zinc chloride, lithium chloride, barium nitrate are uniformly mixed in Muffle furnace and heat
To molten condition, adding nano-metal-oxide, use magnetic stirring apparatus, rotating speed is 400 revs/min, stirs
Mix 1 hour mix homogeneously.Obtain the nanometer fused salt mixt heat transfer heat storage medium of embodiment 2.
Embodiment 3
Weigh each raw material (weight portion): 50 parts of potassium chloride, zinc chloride 30 parts, lithium chloride 20 parts, nitre
Acid caesium 10 parts, nano-metal-oxide 0.9 part.
Described nano-metal-oxide is 1:1 in mass ratio by magnesium oxide, titanium dioxide, zirconium dioxide:
1 is uniformly mixed and obtains.
Prepared by nanometer fused salt mixt heat transfer heat storage medium:
Put into after potassium chloride, zinc chloride, lithium chloride, cesium nitrate are uniformly mixed in Muffle furnace and heat
To molten condition, adding nano-metal-oxide, use magnetic stirring apparatus, rotating speed is 400 revs/min, stirs
Mix 1 hour mix homogeneously.Obtain the nanometer fused salt mixt heat transfer heat storage medium of embodiment 3.
Embodiment 4
Proportioning raw materials and method by embodiment 1 prepare nanometer fused salt mixt heat transfer heat storage medium, and difference is only
It is: described nano-metal-oxide is mixed for 1:1 stirring in mass ratio by titanium dioxide, zirconium dioxide
Close and uniformly obtain.Obtain the nanometer fused salt mixt heat transfer heat storage medium of embodiment 4.
Embodiment 5
Proportioning raw materials and method by embodiment 1 prepare nanometer fused salt mixt heat transfer heat storage medium, and difference is only
It is: described nano-metal-oxide is mixed for 1:1 stirring in mass ratio by magnesium oxide, zirconium dioxide
Uniformly obtain.Obtain the nanometer fused salt mixt heat transfer heat storage medium of embodiment 5.
Embodiment 6
Proportioning raw materials and method by embodiment 1 prepare nanometer fused salt mixt heat transfer heat storage medium, and difference is only
It is: described nano-metal-oxide is mixed for 1:1 stirring in mass ratio by magnesium oxide, titanium dioxide
Uniformly obtain.Obtain the nanometer fused salt mixt heat transfer heat storage medium of embodiment 6.
Test case 1
Embodiment 1-6 is prepared nanometer fused salt mixt heat transfer the fusing point of heat storage medium, decomposition temperature,
Specific heat is tested.
Use the fusing point of DSC (differential canning calorimetry) test analysis low-melting-point nano fused salt, pass through
TG (thermogravimetric) analyzes its decomposition temperature, uses DIN51007 standard method to analyze its specific heat.
Concrete outcome is shown in Table 1.
Table 1: test result table
By upper table data it is evident that fusing point of the present invention is low, decomposition temperature is high, specific heat is high.
Comparing embodiment 1 and embodiment 2-3, embodiment 1 (barium nitrate, cesium nitrate are compounding) specific heat is obvious
Higher than embodiment 2-3 (single raw material in barium nitrate, cesium nitrate).
Comparing embodiment 1 and embodiment 4-6, (magnesium oxide, titanium dioxide, zirconium dioxide are multiple for embodiment 1
Join) (in magnesium oxide, titanium dioxide, zirconium dioxide, arbitrarily the two is multiple apparently higher than embodiment 4-6 for specific heat
Join).
Claims (4)
1. a nanometer fused salt mixt heat transfer heat storage medium, it is characterised in that by the raw material of following weight parts
It is prepared from: potassium chloride 40-60 part, zinc chloride 20-40 part, lithium chloride 10-30 part, barium nitrate 3-7
Part, cesium nitrate 3-7 part, nano-metal-oxide 0.6-1.6 part.
2. nanometer fused salt mixt heat transfer heat storage medium as claimed in claim 1, it is characterised in that described
Nano-metal-oxide be the mixture of one or more in magnesium oxide, titanium dioxide, zirconium dioxide.
3. nanometer fused salt mixt heat transfer heat storage medium as claimed in claim 2, it is characterised in that described
Nano-metal-oxide mixed by magnesium oxide, titanium dioxide, zirconium dioxide, described magnesium oxide,
Titanium dioxide, the mass ratio of zirconium dioxide are (1-3): (1-3): (1-3).
4. the preparation side of the nanometer fused salt mixt heat transfer heat storage medium as described in any one of claim 1-3
Method, it is characterised in that potassium chloride, zinc chloride, lithium chloride, barium nitrate, cesium nitrate are put into Muffle furnace
In be heated to molten condition, add nano-metal-oxide, stir, cooling.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109370531A (en) * | 2018-09-30 | 2019-02-22 | 贵州梅岭电源有限公司 | A kind of preparation method of thermal cell heat buffering heat accumulating |
| CN109777373A (en) * | 2019-03-06 | 2019-05-21 | 北京理工大学 | Across the season heat accumulating of medium temperature |
| US10914293B2 (en) | 2018-06-20 | 2021-02-09 | David Alan McBay | Method, system and apparatus for extracting heat energy from geothermal briny fluid |
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| CN103113854A (en) * | 2013-02-06 | 2013-05-22 | 青岛奥环新能源科技发展有限公司 | Composite phase-change material for mobile heat supply and preparation method thereof |
| CN103756647A (en) * | 2014-01-25 | 2014-04-30 | 西安科技大学 | Particle-molten salt compound heat-transferring and heat-accumulating medium material and preparation method thereof |
| CN105222477A (en) * | 2015-05-08 | 2016-01-06 | 北京工业大学 | A kind of low-melting-point nano Molten Salt Heat Transfer heat storage medium and preparation method |
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- 2016-04-25 CN CN201610261744.8A patent/CN105838338A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103113854A (en) * | 2013-02-06 | 2013-05-22 | 青岛奥环新能源科技发展有限公司 | Composite phase-change material for mobile heat supply and preparation method thereof |
| CN103756647A (en) * | 2014-01-25 | 2014-04-30 | 西安科技大学 | Particle-molten salt compound heat-transferring and heat-accumulating medium material and preparation method thereof |
| CN105222477A (en) * | 2015-05-08 | 2016-01-06 | 北京工业大学 | A kind of low-melting-point nano Molten Salt Heat Transfer heat storage medium and preparation method |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10914293B2 (en) | 2018-06-20 | 2021-02-09 | David Alan McBay | Method, system and apparatus for extracting heat energy from geothermal briny fluid |
| US11225951B2 (en) | 2018-06-20 | 2022-01-18 | David Alan McBay | Method, system and apparatus for extracting heat energy from geothermal briny fluid |
| US11692530B2 (en) | 2018-06-20 | 2023-07-04 | David Alan McBay | Method, system and apparatus for extracting heat energy from geothermal briny fluid |
| CN109370531A (en) * | 2018-09-30 | 2019-02-22 | 贵州梅岭电源有限公司 | A kind of preparation method of thermal cell heat buffering heat accumulating |
| CN109370531B (en) * | 2018-09-30 | 2021-01-22 | 贵州梅岭电源有限公司 | Preparation method of thermal buffer heat storage material for thermal battery |
| CN109777373A (en) * | 2019-03-06 | 2019-05-21 | 北京理工大学 | Across the season heat accumulating of medium temperature |
| CN109777373B (en) * | 2019-03-06 | 2021-01-26 | 北京理工大学 | Intermediate-temperature seasonal heat storage material |
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Application publication date: 20160810 |