CN106010467B - Conductive molten material for solar energy metallurgical melting pot - Google Patents
Conductive molten material for solar energy metallurgical melting pot Download PDFInfo
- Publication number
- CN106010467B CN106010467B CN201610375973.2A CN201610375973A CN106010467B CN 106010467 B CN106010467 B CN 106010467B CN 201610375973 A CN201610375973 A CN 201610375973A CN 106010467 B CN106010467 B CN 106010467B
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- Prior art keywords
- conductive molten
- molten material
- temperature
- solar energy
- aluminium polychloride
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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
-
- 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
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- Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Electrolytic Production Of Metals (AREA)
- Secondary Cells (AREA)
- Silicon Compounds (AREA)
Abstract
The invention discloses a kind of conductive molten materials for solar energy metallurgical melting pot, including following component: sodium chloride, aluminium polychloride, nano inorganic material and additive, and wherein aluminium polychloride is to be prepared using kaolin as raw material using basicity regulator.It is good that the purpose of the present invention is to provide a kind of thermal stability, and thermal coefficient is high, and operating temperature range is wide, inexpensive fusion tray of thermal transmission and storage material.
Description
Technical field
The present invention relates to melted material field, it is more particularly related to a kind of for solar energy metallurgical melting pot
Conductive molten material.
Background technique
Solar energy metallurgy utilizes solar energy reflection optically focused, to graphite crucible in plateau, heat 1500 DEG C of a temperature from
And reach metallurgical technology.
Due to the intermittence of solar sources, it is seen that property full-time cannot irradiate, so we increase on the basis of crucible metallurgy
Hollow cavity adds special fuse salt to keep weighing apparatus temperature.When temperature quickly increases, fuse salt melts, thermally conductive to do to crucible
Work melts salt and starts solidification release heat, to reach the temperature for keeping crucible, and achieve the effect that metallurgy when sunlight suddenly disappears.
Currently, some conductive molten materials in the market mainly have nitric acid fused salt, nitric acid fused salt has fusing point low, and thermal stability is good, right
The features such as container corrosion is good, still, nitric acid fused salt are easy to decompose at high temperature, and the upper limit is usually no more than 600 using temperature
DEG C, be not suitable for the application of solar energy metallurgy high temperature.
The two carbonic acid molten system is also disclosed in the prior art, both carbonate moltens can be under 800 DEG C of high temperature
It uses, but the problem that carbonate system is high there are still viscosity, it is especially higher in the attachment viscosity of solidification, it is not suitable as height
Temperature heat transfer heat-storing material.
Chinese patent 200910074994 discloses a kind of fluorine salt-based nano high temperature phase change heat storage composite material, is by nanometer
Gold particle, silver particles, the copper particle of grade are combined in the villiaumite of high-temperature phase-change by a certain percentage and obtain, and overcome the change of villiaumite base phase
Heat transfer property existing for material is poor, and thermal conductivity is low, and when solidification, which refers to, shrinks the defects of big.But the compound goldc grains in villiaumite base
Son, silver particles, copper particle do not overcome fluorine-based salt there are pyroconductivities low, the defects of thermal stability is poor, and at high cost.About
How selecting suitable component to prepare, operating temperature range is wide, and the heat-storing material that thermal stability is good and thermal coefficient is high makes
It is more suitable for using in industrial accumulation of energy and solar energy field of metallurgy, it is necessary to further research and trial.
Summary of the invention
For shortcoming and deficiency existing for the existing fusion tray of thermal transmission and storage material of client, the purpose of the present invention is to provide
A kind of thermal stability is good, and thermal coefficient is high, and operating temperature range is wide, inexpensive fusion tray of thermal transmission and storage material.
In order to realize these purposes and other advantages according to the present invention, the invention is realized by the following technical scheme: one
Kind is used for the conductive molten material of solar energy metallurgical melting pot, the component including pressing following mass percentage:
Preferably, the aluminium polychloride is prepared using basicity regulator, polyaluminium using kaolin as raw material
Aluminum oxide content is 20~55wt% in aluminium, and basicity is 45~80wt%.
Preferably, the basicity is adjusted to one or more of calcium oxide, sierozem power, sodium hydroxide, sodium carbonate.
Preferably, the nano inorganic material is selected from one of silicon nitride, silicon carbide, silica.
Preferably, the particle size range of the nano inorganic material is 10~30nm.
Preferably, the additive is the mixture that calcium chloride and fluorine-based salt form, mass ratio be 1:(0.2~
0.5)。
Preferably, the fluorine-based salt is selected from one of lithium fluoride or calcirm-fluoride.
The present invention is include at least the following beneficial effects:
1) present invention is by increasing nano inorganic material, and under high-temperature liquid-phase state, the nanoparticle in mixed liquor is stablized
It suspends, since nanoparticle has very big specific surface area and interfacial effect, considerably increases the thermal coefficient of conductive molten salt
And heat transfer area, thermal coefficient significantly improve, heating conduction greatly increases；
2) present invention is by the additive of addition calcium chloride and fluorine-based salt composition, available with different phase transition temperatures
Conductive molten salt, to meet the requirement of solar energy metallurgy within the scope of very wide temperature；
3) present invention can be significantly reduced cost, lead to by the way that the aluminium polychloride using kaolin for raw material preparation is added
The adjusting of basicity regulator is crossed, the high temperature resistant temperature of heat fusing salt can be improved.
Further advantage, target and feature of the invention will be partially reflected by the following instructions, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Specific embodiment
The present invention is described in further detail combined with specific embodiments below, to enable those skilled in the art's reference say
Bright book text can be implemented accordingly.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more
The presence or addition of a other elements or combinations thereof.
Embodiment 1
Calcium chloride and calcirm-fluoride that mass ratio is 1:0.2 are mixed and stirred for uniformly, static heating to whole thawings, then
Heat preservation 10 minutes, then cooled to room temperature and crush, obtain the additive.
It is 30% sodium chloride, 50% aluminium polychloride, 10% nano silica (average grain diameter by mass percent
10nm), 10% additive is mixed and stirred for uniformly, and static heating to solid all melts, and then 30 minutes is kept the temperature, naturally cold
But it to room temperature and crushes, obtains the conductive molten material.
Fusing point, latent heat of phase change and thermal stability determination are carried out to the conductive molten material of preparation.Measurement result is shown, made
The fusing point of standby conductive molten material is 879 DEG C, latent heat of phase change 1032kJ/kg.
Embodiment 2
Calcium chloride and calcirm-fluoride that mass ratio is 1:0.4 are mixed and stirred for uniformly, static heating to whole thawings, then
Heat preservation 10 minutes, then cooled to room temperature and crush, obtain the additive.
It is 50% sodium chloride, 40% aluminium polychloride, 5% nano silica (average grain diameter by mass percent
30nm), 5% additive is mixed and stirred for uniformly, and static heating to solid all melts, and then 30 minutes is kept the temperature, naturally cold
But it to room temperature and crushes, obtains the conductive molten material.
Fusing point, latent heat of phase change and thermal stability determination are carried out to the conductive molten material of preparation.Measurement result is shown, made
The fusing point of standby conductive molten material is 849 DEG C, latent heat of phase change 982kJ/kg.
Embodiment 3
Calcium chloride and calcirm-fluoride that mass ratio is 1:0.5 are mixed and stirred for uniformly, static heating to whole thawings, then
Heat preservation 10 minutes, then cooled to room temperature and crush, obtain the additive.
It is 78% sodium chloride, 20% aluminium polychloride, 1% nano silica (average grain diameter by mass percent
20nm), 1% additive is mixed and stirred for uniformly, and static heating to solid all melts, and then 30 minutes is kept the temperature, naturally cold
But it to room temperature and crushes, obtains the conductive molten material.
Fusing point, latent heat of phase change and thermal stability determination are carried out to the conductive molten material of preparation.Measurement result is shown, made
The fusing point of standby conductive molten material is 819 DEG C, latent heat of phase change 889kJ/kg.
Embodiment 4
Calcium chloride and calcirm-fluoride that mass ratio is 1:0.5 are mixed and stirred for uniformly, static heating to whole thawings, then
Heat preservation 10 minutes, then cooled to room temperature and crush, obtain the additive.
It is 65% sodium chloride, 20% aluminium polychloride, 10% nano silica (average grain diameter by mass percent
20nm), 5% additive is mixed and stirred for uniformly, and static heating to solid all melts, and then 30 minutes is kept the temperature, naturally cold
But it to room temperature and crushes, obtains the conductive molten material.
Fusing point, latent heat of phase change and thermal stability determination are carried out to the conductive molten material of preparation.Measurement result is shown, made
The fusing point of standby conductive molten material is 879 DEG C, latent heat of phase change 1029kJ/kg.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With.It can be applied to various suitable the field of the invention completely.It for those skilled in the art can be easily
Realize other modification.Therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details.
Claims (1)
1. a kind of conductive molten material for solar energy metallurgical melting pot, which is characterized in that by by following mass percentage
Group is grouped as:
Wherein, the aluminium polychloride is to be prepared using kaolin as raw material using basicity regulator, three oxygen in aluminium polychloride
Changing two aluminium contents is 20~55wt%, and basicity is 45~80wt%；The basicity regulator is calcium oxide, sierozem power, hydrogen
One or more of sodium oxide molybdena, sodium carbonate；
The particle size range of the nano inorganic material is 10~30nm；
Preparation method is as follows:
Calcium chloride and calcirm-fluoride that mass ratio is 1:0.5 are mixed and stirred for uniformly, then static heating is kept the temperature to whole thawings
10 minutes, then cooled to room temperature and crush, obtain the additive；
It is 65% sodium chloride by mass percent, 20% aluminium polychloride, 10% nano silica, the mixing of 5% additive is simultaneously
It stirs evenly, static heating to solid all melts, and then keeps the temperature 30 minutes, in cooled to room temperature and crushes, obtain institute
State conductive molten material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610375973.2A CN106010467B (en) | 2016-05-31 | 2016-05-31 | Conductive molten material for solar energy metallurgical melting pot |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610375973.2A CN106010467B (en) | 2016-05-31 | 2016-05-31 | Conductive molten material for solar energy metallurgical melting pot |
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| Publication Number | Publication Date |
|---|---|
| CN106010467A CN106010467A (en) | 2016-10-12 |
| CN106010467B true CN106010467B (en) | 2019-10-08 |
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| CN201610375973.2A Expired - Fee Related CN106010467B (en) | 2016-05-31 | 2016-05-31 | Conductive molten material for solar energy metallurgical melting pot |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112520772A (en) * | 2020-12-23 | 2021-03-19 | 四川科龙达环保股份有限公司 | Method for producing high-purity colorless transparent polyaluminum chloride by using aluminum ash |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102304350A (en) * | 2011-07-11 | 2012-01-04 | 中南大学 | Preparation method of high temperature heat storage material for solar photo-thermal power generation |
| CN103923619A (en) * | 2013-12-26 | 2014-07-16 | 深圳市爱能森科技有限公司 | Molten nano-carbonate heat transfer and accumulation medium, and preparation method and application thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011083735A1 (en) * | 2011-09-29 | 2013-04-04 | Siemens Aktiengesellschaft | Salt mixture as heat transfer and / or storage medium for solar thermal power plants, process for the preparation thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102304350A (en) * | 2011-07-11 | 2012-01-04 | 中南大学 | Preparation method of high temperature heat storage material for solar photo-thermal power generation |
| CN103923619A (en) * | 2013-12-26 | 2014-07-16 | 深圳市爱能森科技有限公司 | Molten nano-carbonate heat transfer and accumulation medium, and preparation method and application thereof |
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| CN106010467A (en) | 2016-10-12 |
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Granted publication date: 20191008 |