CN105838337A - Nano mixed molten salt heat transfer and storage medium with high specific heat and preparation method thereof - Google Patents
Nano mixed molten salt heat transfer and storage medium with high specific heat and preparation method thereof Download PDFInfo
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- CN105838337A CN105838337A CN201610261742.9A CN201610261742A CN105838337A CN 105838337 A CN105838337 A CN 105838337A CN 201610261742 A CN201610261742 A CN 201610261742A CN 105838337 A CN105838337 A CN 105838337A
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- 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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- 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
Abstract
The invention discloses a nano mixed molten salt heat transfer and storage medium with high specific heat and a preparation method thereof. The nano mixed molten salt heat transfer and storage medium with high specific heat is prepared from the following raw materials in parts by weight: 20-40 parts of potassium chloride, 10-30 parts of lithium chloride, 20-40 parts of magnesium chloride, 10-30 parts of manganese chloride, 3-7 parts of zinc carbonate, 3-7 parts of barium carbonate and 0.6-1.6 parts of nano metal oxide. The nano mixed molten salt heat transfer and storage medium with high specific heat 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 with high specific heat 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 high specific heat nanometer fused salt mixt
Heat transfer heat storage 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 high specific heat nanometer fused salt mixt heat transfer heat storage medium, specific heat is high, fusing point is low,
Thermal conductivity 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 high specific heat nanometer fused salt mixt heat transfer heat storage medium.
The two of the technical problem to be solved are to provide a kind of high specific heat nanometer fused salt mixt heat transfer and store
The preparation method of thermal medium.
The present invention seeks to be achieved through the following technical solutions:
A kind of high specific heat nanometer fused salt mixt heat transfer heat storage medium, is prepared from by the raw material of following weight parts:
Potassium chloride 20-40 part, lithium chloride 10-30 part, magnesium chloride 20-40 part, manganese chloride 10-30 part, carbonic acid
Zinc 3-7 part, brium carbonate 3-7 part, nano-metal-oxide 0.6-1.6 part.
Preferably, described nano-metal-oxide is a kind of in aluminium oxide, titanium dioxide, zirconium dioxide
Or multiple mixture.
It is highly preferred that described nano-metal-oxide is by aluminium oxide, titanium dioxide, zirconium dioxide mixing
Forming, described aluminium oxide, titanium dioxide, the mass ratio of zirconium dioxide are (1-3): (1-3): (1-3).
Present invention also offers the preparation method of above-mentioned high specific heat nanometer fused salt mixt heat transfer heat storage medium, will
Potassium chloride, lithium chloride, magnesium chloride, manganese chloride, zinc carbonate, brium carbonate are put into and are heated in Muffle furnace melting
Melt state, add nano-metal-oxide, stir, cooling.
Concrete, in the present invention:
Potassium chloride, No. CAS: No. CAS: 7447-40-7.
Magnesium chloride, No. CAS: 7786-30-3.
Lithium chloride, No. CAS: 7447-41-8.
Manganese chloride, No. CAS: 7773-01-5.
Zinc carbonate, No. CAS: 3486-35-9.
Brium carbonate, No. CAS: 513-77-9.
Aluminium oxide, molecular formula: Al2O3, No. CAS: 1344-28-1, 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 high specific heat nanometer fused salt mixt of the present invention heat transfer heat storage medium, prepares low cost, preparing process
Simply.The fused salt mixt hot physical property performance of the present invention is highly stable, has heat transfer coefficient height, operating temperature
The advantage such as high, corrosivity is little, steam pressure is low, environmental friendliness, safety are good.The present invention can effectively increase
Strong system heat storage capacity and heat transfer efficiency, reduce solar energy thermal-power-generating and industry accumulation of heat cost, range of application
Extensively.
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): 30 parts of potassium chloride, lithium chloride 20 parts, 30 parts of magnesium chloride, chlorine
Change 20 parts of manganese, zinc carbonate 5 parts, brium carbonate 5 parts, nano-metal-oxide 0.9 part.
Described nano-metal-oxide is 1:1 in mass ratio by aluminium oxide, titanium dioxide, zirconium dioxide:
1 is uniformly mixed and obtains.
Prepared by high specific heat nanometer fused salt mixt heat transfer heat storage medium:
After potassium chloride, lithium chloride, magnesium chloride, manganese chloride, zinc carbonate, brium carbonate are uniformly mixed
Put into and Muffle furnace is heated to molten condition, add nano-metal-oxide, use magnetic stirring apparatus, turn
Speed is 400 revs/min, stirs 1 hour mix homogeneously, is cooled to 25℃.Obtain the height ratio of embodiment 1
Hot nanometer fused salt mixt heat transfer heat storage medium.
Embodiment 2
Weigh each raw material (weight portion): 30 parts of potassium chloride, lithium chloride 20 parts, 30 parts of magnesium chloride, chlorine
Change 20 parts of manganese, zinc carbonate 10 parts, nano-metal-oxide 0.9 part.
Described nano-metal-oxide is 1:1 in mass ratio by aluminium oxide, titanium dioxide, zirconium dioxide:
1 is uniformly mixed and obtains.
Prepared by high specific heat nanometer fused salt mixt heat transfer heat storage medium:
Muffle is put into after potassium chloride, lithium chloride, magnesium chloride, manganese chloride, zinc carbonate 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.Obtain the high specific heat nanometer fused salt mixt heat transfer accumulation of heat of embodiment 2
Medium.
Embodiment 3
Weigh each raw material (weight portion): 30 parts of potassium chloride, lithium chloride 20 parts, 30 parts of magnesium chloride, chlorine
Change 20 parts of manganese, brium carbonate 10 parts, nano-metal-oxide 0.9 part.
Described nano-metal-oxide is 1:1 in mass ratio by aluminium oxide, titanium dioxide, zirconium dioxide:
1 is uniformly mixed and obtains.
Prepared by high specific heat nanometer fused salt mixt heat transfer heat storage medium:
Muffle is put into after potassium chloride, lithium chloride, magnesium chloride, manganese chloride, brium carbonate 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.Obtain the high specific heat nanometer fused salt mixt heat transfer accumulation of heat of embodiment 3
Medium.
Embodiment 4
Proportioning raw materials and method by embodiment 1 prepare high specific heat nanometer fused salt mixt heat transfer heat storage medium,
Differ only in: described nano-metal-oxide is 1:1 in mass ratio by titanium dioxide, zirconium dioxide
It is uniformly mixed and obtains.Obtain the high specific heat nanometer fused salt mixt heat transfer heat storage medium of embodiment 4.
Embodiment 5
Proportioning raw materials and method by embodiment 1 prepare high specific heat nanometer fused salt mixt heat transfer heat storage medium,
Differ only in: described nano-metal-oxide is 1:1 in mass ratio by aluminium oxide, zirconium dioxide
It is uniformly mixed and obtains.Obtain the high specific heat nanometer fused salt mixt heat transfer heat storage medium of embodiment 5.
Embodiment 6
Proportioning raw materials and method by embodiment 1 prepare high specific heat nanometer fused salt mixt heat transfer heat storage medium,
Differ only in: described nano-metal-oxide is 1:1 in mass ratio by aluminium oxide, titanium dioxide
It is uniformly mixed and obtains.Obtain the high specific heat nanometer fused salt mixt heat transfer heat storage medium of embodiment 6.
Test case 1
Embodiment 1-6 is prepared high specific heat nanometer fused salt mixt heat transfer heat storage medium fusing point, point
Solve 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
| Fusing point, DEG C | Decomposition temperature, DEG C | Specific heat, J/ (g k) | |
| Embodiment 1 | 131.4 | 597 | 2.6 |
| Embodiment 2 | 138.8 | 592 | 2.1 |
| Embodiment 3 | 139.2 | 594 | 1.9 |
| Embodiment 4 | 138.5 | 590 | 2.1 |
| Embodiment 5 | 138.3 | 592 | 2.0 |
| Embodiment 6 | 138.7 | 591 | 2.2 |
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 (zinc carbonate, brium carbonate are compounding) specific heat is obvious
Higher than embodiment 2-3 (single raw material in zinc carbonate, brium carbonate).
Comparing embodiment 1 and embodiment 4-6, (aluminium oxide, titanium dioxide, zirconium dioxide are multiple for embodiment 1
Join) (in aluminium oxide, titanium dioxide, zirconium dioxide, arbitrarily the two is multiple apparently higher than embodiment 4-6 for specific heat
Join).
Claims (4)
1. a high specific heat nanometer fused salt mixt heat transfer heat storage medium, it is characterised in that by following weight parts
Raw material be prepared from: potassium chloride 20-40 part, lithium chloride 10-30 part, magnesium chloride 20-40 part, chlorination
Manganese 10-30 part, zinc carbonate 3-7 part, brium carbonate 3-7 part, nano-metal-oxide 0.6-1.6 part.
2. high specific heat nanometer fused salt mixt heat transfer heat storage medium as claimed in claim 1, it is characterised in that
Described nano-metal-oxide is the mixing of one or more in aluminium oxide, titanium dioxide, zirconium dioxide
Thing.
3. high specific heat nanometer fused salt mixt heat transfer heat storage medium as claimed in claim 2, it is characterised in that
Described nano-metal-oxide is mixed by aluminium oxide, titanium dioxide, zirconium dioxide, described oxidation
Aluminum, titanium dioxide, the mass ratio of zirconium dioxide are (1-3): (1-3): (1-3).
4. the system of the high specific heat nanometer fused salt mixt heat transfer heat storage medium as described in any one of claim 1-3
Preparation Method, it is characterised in that by potassium chloride, lithium chloride, magnesium chloride, manganese chloride, zinc carbonate, carbonic acid
Barium is put into and is heated to molten condition in Muffle furnace, adds nano-metal-oxide, stirs, cooling.
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Cited By (1)
| 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 |
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Cited By (3)
| 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 |
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