CN106867466A - Using flyash and the method for hydrated inorganic salt synthesizing inorganic phase-changing energy storage material - Google Patents
Using flyash and the method for hydrated inorganic salt synthesizing inorganic phase-changing energy storage material Download PDFInfo
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Abstract
A kind of method of utilization flyash and hydrated inorganic salt synthesizing inorganic phase-changing energy storage material, belong to the synthesis technical field of Inorganic Non-metallic Materials, flyash is characterized as flyash 30~40%, composite phase-change material 60~70% by weight percent with the composition of composite phase-change material.The composition of composite phase-change material is sal glauberi 49~58%, 12 hypophosphite monohydrate hydrogen sodium 21~36%, borax 3~4%, water 11~18%.Sal glauberi and 12 hypophosphite monohydrate hydrogen sodium and borax are first made into saturated solution, are then adsorbed using the porous of flyash, be made the composite phase-change material of adjustable room temperature.The method have the advantages that：Raw material fully belongs to inorganic material, and source is wide, low cost；Solid waste coal ash is make use of, and without worry and the combination problem of building materials；Synthetic method is simple, and phase transition temperature is in room temperature scope, the convenient regulation to indoor temperature；Composite phase change heat-accumulation material is not stratified, degree of supercooling is also eased, stable performance, reproducible, service life extension, can preferably be applied in actual Energy Conservation Project in Construction.
Description
Technical field
The present invention relates to the synthesis technical field of Inorganic Non-metallic Materials, particularly with solid waste (flyash), ten
Aqueous sodium persulfate, 12 hypophosphite monohydrate hydrogen sodium and borax are the method for Material synthesis inorganic compounding energy storage phase change material.
Background technology
In recent years, because energy shortage problem is more and more significant, various countries start to be devoted to Renewable Energy Development and recovery
Used heat, such as to the utilization of solar energy, wind energy, geothermal energy etc..Heat-storage technology (Thermal energy storage) can be used for
Energy supply and demand unmatched contradiction over time and space is solved, is the effective hand for improving efficiency of energy utilization and environmental protection
Section, Solar use, " peak load shifting " of electric power, the recycling of used heat and waste heat and industry with civil buildings heating with
The fields such as the energy-conservation of air-conditioning are with a wide range of applications, it has also become worldwide study hotspot.Phase-change material (PCM) conduct
The core material of phase change energy storage technology has very big potentiality at aspects such as storage solar energy and Waste Heat Reuses, compared to general storage
Material, such as water or rock are deposited, the PCM of unit volume can store more heats, another key advantages is PCM heat accumulations and extensive
Multiple isothermal occurs, and this is make them highly suitable for space heating or cooling.
Current PCMs materials mainly include the phase transformation that is directly incorporated into, impregnates, encapsulates and shapes with the associated methods of construction material
Material etc..Wherein be directly incorporated into and dipping be by phase-change material and construction material directly in conjunction with, although it is fairly simple, but exist
The problems such as leakage is incompatible with material.Encapsulation is divided into macroencapsulation and microcosmic encapsulation again, and macroencapsulation refers to that phase-change material is sealed
It is attached in a specific container (such as tubular container, spheroid, plate-shaped container), microcosmic encapsulation (microcapsules technology) refers to handle
Phase-change material is encapsulated in miniature high molecular polymer, is then blended into construction material.
Sizing phase-change material refers to for phase-change material being dispersed in another backing material (such as high density polyethylene (HDPE), fourth
Benzene rubber etc.) in, form a kind of composite.Because this composite typically all has larger thermal capacitance, suitable heat conduction
Coefficient, preferably fixed phase-change material and preferable thermal cycling stability, current attention rate more and more higher.In addition using inorganic many
Porous materials absorption phase-change material is also the relatively more extensive sizing encapsulation technology of research at present, at present using more porous material
Have：Expanded perlite, expanded graphite, sepiolite, montmorillonite, ceramics etc..Flyash as typical solid waste, because its compared with
Big specific surface area and porous property, and with the preferable binding ability of cement, be for adsorbing phase-change material for building energy conservation
Ideal chose.
Most of domestic and international research for sizing phase-change material at present is concentrated mainly on organic phase change material, belongs to organic
~organic (most microcapsules technology, melamine resin~n-dodecanol, polyureas~butyl stearate etc.) or
Person is inorganic~organic (most sizing phase-change material, part microcapsules technology, kaolin~paraffin, diatomite~poly- second
Glycol, expanded graphite~palmitic acid etc.).Especially inorganic hydrated salt class has heat to inorganic phase-changing material with respect to organic phase change material
Density is big, thermal conductivity factor is high, the low advantage of cost, although supercooling governs the development of inorganic phase-changing material with problem of phase separation,
But there are some researches show problem of phase separation can be resolved after micro-porous adsorption, and also can to a certain extent alleviate supercooling
Degree.Therefore the sizing encapsulation research in recent years for inorganic phase-changing material is more and more, and it is expanded graphite to study at present more
For the absorption of inorganic phase-changing material, but expanded graphite is relatively costly, and consumed energy is also wanted in pretreatment itself, is particularly expanded
The combination of the construction material such as graphite and cement can cause the compression strength of building materials to decline, and compare expanded graphite, although flyash than
Surface area is relatively little, but flyash is originally solid waste, and adsorbent can be greatly lowered using Powder ash adsorption
Cost, and solid waste of having dissolved, it is important to which the composition of flyash and cement is very close to originally can be with manufacture of cement
Addition part flyash, therefore the problem incompatible in itself without considering material, and synthetic method is simple, without pretreatment.This
Study the phase-changing energy storage material to be synthesized by inorganic material completely, belong to inorganic~inorganic composite phase-change material, compared to other
Organic~organic, organic~inorganic phase-changing energy storage material advantage such as have energy density big, low cost, safety coefficient high；More
It is also to be completed in room temperature as absorption carrier, and phase transformation by the use of solid waste flyash, there is wide development in building energy storage field
Prospect.
The content of the invention
It is an object of the invention to provide one kind using flyash, sal glauberi, 12 hypophosphite monohydrate hydrogen sodium and borax
It is the method for Material synthesis inorganic compounding energy storage phase change material.The all inorganic material of raw material of synthesis of the present invention, wherein powder
Coal ash belongs to solid waste.The present invention undergoes phase transition only with being simply mixed adsorption method at room temperature, and properties reach pre-
Phase target, can be used to adjust indoor temperature, and future has a extensive future in building energy saving field, with economic worth higher and
Significance for Environment.
The invention discloses a kind of utilization flyash and the method for hydrated inorganic salt synthesizing inorganic phase-changing energy storage material, it is special
It is that flyash, sal glauberi, 12 hypophosphite monohydrate hydrogen sodium, borax are raw material to levy, and synthetic method comprises the following steps：
(1) raw material prepares：Flyash is dried 10~15 hours in 60 degrees Celsius of baking ovens, selection sal glauberi, ten
, used as phase-change material, selection borax is used as nucleator for two two kinds of inorganic hydrated salts of hypophosphite monohydrate hydrogen sodium；
(2) prepared by inorganic composite phase-change material：The quality of control sal glauberi, 12 hypophosphite monohydrate hydrogen sodium and borax
Than according to mass percent sal glauberi 49~58%, 12 hypophosphite monohydrate hydrogen sodium 21~36%, borax 3~4%, water 11
~18% is mixed, and is put into 55~65 degrees Celsius of baking ovens until solid therein is completely melt to form saturated solution；
(3) Powder ash adsorption：Matched according to mass percent：Flyash 30~40%, inorganic composite phase-change material 60~
70%, will weigh during flyash adds above-mentioned saturated solution, using magnetic stirring apparatus at 55~65 degrees Celsius, keep rotating speed
500~800 revs/min are stirred 0.5-1.5 hours so that flyash is dispersed in the saturated solution of composite phase-change material,
Place into 10~15 hours in 55~65 degrees Celsius of baking ovens, it is ensured that Powder ash adsorption is complete；
(4) low-temperature evaporation：Done during the complete flyash phase-change material of above-mentioned absorption is put into 10~20 degrees Celsius of isoperibols
Dry 10~15 hours, evaporate unnecessary moisture.
The advantage of the invention is that：Using solid waste coal ash, sal glauberi, 12 hypophosphite monohydrate hydrogen sodium and boron
Sand is Material synthesis inorganic compounding energy storage phase change material, and the raw material of preparation is flyash, solid waste of having dissolved, ten water sulfuric acid
Sodium falls within reserves than more rich mineral matter, and cost is relatively low, and sodium phosphate dodecahydrate and borax also compare appearance as additive
Easily obtain.Additionally, synthetic method of the invention is simple, flyash does not need additional pre-treatment, and flyash and inorganic-phase variable material
Material only can just be completed by way of simple absorption, and the initial calorific value of the composite phase-change material for obtaining has reached 100~110
J/g, 23~25 degrees Celsius of initial fusion temperature is weightless within 5% in 60 degrees Celsius, by after 100 cold cyclings
Calorific value remains to be maintained at more than 80 Js/g.Solid waste bulk deposition pollution on the environment is not only solved, future exists
The application that building energy conservation is utilized also have greatly can the phase, and meet the industrial policy of " recycling economy " that country advocates.
Brief description of the drawings
Fig. 1 flyash composite phase-change material preparation flows.
Fig. 2 flyash composite phase-change material means of differential scanning calorimetry figures.
Fig. 3 flyash composite phase-change material X ray diffracting spectrums.
Fig. 4 flyash composite phase-change material microscopic structures.
Fig. 5 flyash composite phase-change material thermal multigraph pictures.
Fig. 6 flyash composite phase-change material circulation experiment results.
Specific embodiment
It is raw material, synthesizing inorganic composite energy storage phase to use flyash, sal glauberi, 12 hypophosphite monohydrate hydrogen sodium and borax
Become material, its proportioning is as shown in table 1.Preparation flow is as shown in Figure 1.X-ray diffraction, SEM, thermogravimetric analysis are carried out to synthesis sample
And differential scanning calorimetric analysis.
Table 1. prepares flyash composite phase-change material raw material proportioning
Fig. 2 is the means of differential scanning calorimetry test result of flyash composite phase-change material, as illustrated, sample is incipient melting
23 degrees Celsius of temperature, 109.0 Js/g of heat of fusion, 15 degrees Celsius of initial setting temperature, 72.2 Js/g of heat of solidification.Fig. 3, Fig. 4 are
The X-ray diffraction and SEM results of flyash composite phase-change material, Fig. 3 can be seen that thing in composite phase-change material except powder
It is exactly the hydrate of sodium sulphate and sodium phosphate outside the main component (silica, mullite) of coal ash, Fig. 4 is front and rear absorption
Flyash pattern, a figures be absorption before flyash pattern, b figures be absorption after flyash pattern.Fig. 5 is flyash
The thermogravimetric test result of composite phase-change material, as can be seen from the figure in the range of operating temperature (in 60 degrees Celsius) sample mistake
5% is no more than again.Fig. 6 is the circulation experiment result of sample, by 100 cold cyclings, the calorific value of material remain at it is 80 burnt/
More than gram.
Claims (2)
1. a kind of method of utilization flyash and hydrated inorganic salt synthesizing inorganic phase-changing energy storage material, it is characterised in that with fine coal
Ash, sal glauberi, 12 hypophosphite monohydrate hydrogen sodium, borax are raw material, and synthetic method comprises the following steps：
(1) raw material prepares：Flyash is dried 10~15 hours in 60 degrees Celsius of baking ovens, selection sal glauberi, Shi Ershui
Two kinds of inorganic hydrated salts of dibastic sodium phosphate are closed as phase-change material, selection borax is used as nucleator；
(2) prepared by inorganic composite phase-change material：The mass ratio of control sal glauberi, 12 hypophosphite monohydrate hydrogen sodium and borax, puts
Enter in 55~65 degrees Celsius of baking ovens until solid therein is completely melt to form saturated solution；
(3) Powder ash adsorption：To weigh during flyash adds above-mentioned saturated solution, it is Celsius 55~65 using magnetic stirring apparatus
When spending, 500~800 revs/min of rotating speed is kept to stir 0.5-1.5 hours so that flyash is dispersed in composite phase-change material
Saturated solution in, place into 10~15 hours in 55~65 degrees Celsius of baking ovens, it is ensured that Powder ash adsorption is complete；
(4) low-temperature evaporation：10 are dried during the complete flyash phase-change material of above-mentioned absorption is put into 10~20 degrees Celsius of isoperibols
~15 hours, evaporate unnecessary moisture.
2. the side of a kind of utilization flyash according to claim 1 and hydrated inorganic salt synthesizing inorganic phase-changing energy storage material
Method, it is characterised in that：The phase-changing energy storage material is synthesized by inorganic material completely, belongs to inorganic~inorganic composite phase-change material
Material, the wherein composition of composite phase-change material are by weight percent sal glauberi 49~58%, 12 hypophosphite monohydrate hydrogen sodium 21
~36%, borax 3~4%, water 11~18%；Flyash is characterized as fine coal by weight percent with the composition of composite phase-change material
Ash 30~40%, composite phase-change material 60~70%.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107384329A (en) * | 2017-08-29 | 2017-11-24 | 太原科技大学 | A kind of flyash is phase-changing energy storage material of matrix and preparation method thereof |
| CN109337654A (en) * | 2018-11-23 | 2019-02-15 | 辽宁科技学院 | A kind of flyash composite phase-change energy storage material and preparation method thereof |
| CN110295028A (en) * | 2019-07-19 | 2019-10-01 | 华北电力大学 | A kind of high-temperature shaping phase-change heat-storage material and preparation method thereof |
| CN111978922A (en) * | 2020-07-31 | 2020-11-24 | 西安交通大学 | Hydrated salt-based medium-low temperature chemical heat storage material and preparation method thereof |
| CN113214796A (en) * | 2021-04-12 | 2021-08-06 | 东南大学 | Composite inorganic salt phase change cold storage agent and preparation method thereof |
| CN116375420A (en) * | 2023-03-27 | 2023-07-04 | 广东省水利水电第三工程局有限公司 | Ultra-high performance concrete for steel bridge deck and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1896173A (en) * | 2006-06-24 | 2007-01-17 | 浙江华特实业集团华特化工有限公司 | Production of inorganic-phase variable composite material of membrane-coated porous adsorptive |
| CN102660231A (en) * | 2012-04-17 | 2012-09-12 | 武汉大学 | Inorganic phase-change material and preparation method thereof |
| CN104371658A (en) * | 2014-10-29 | 2015-02-25 | 桂林电子科技大学 | Packaging shape-stabilizing method of inorganic hydrated salt phase-change heat storage material |
-
2017
- 2017-03-27 CN CN201710187514.6A patent/CN106867466B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1896173A (en) * | 2006-06-24 | 2007-01-17 | 浙江华特实业集团华特化工有限公司 | Production of inorganic-phase variable composite material of membrane-coated porous adsorptive |
| CN102660231A (en) * | 2012-04-17 | 2012-09-12 | 武汉大学 | Inorganic phase-change material and preparation method thereof |
| CN104371658A (en) * | 2014-10-29 | 2015-02-25 | 桂林电子科技大学 | Packaging shape-stabilizing method of inorganic hydrated salt phase-change heat storage material |
Non-Patent Citations (1)
| Title |
|---|
| 董昭: "用于建筑节能的粉煤灰相变储能材料的制备及应用实验", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107384329A (en) * | 2017-08-29 | 2017-11-24 | 太原科技大学 | A kind of flyash is phase-changing energy storage material of matrix and preparation method thereof |
| CN109337654A (en) * | 2018-11-23 | 2019-02-15 | 辽宁科技学院 | A kind of flyash composite phase-change energy storage material and preparation method thereof |
| CN110295028A (en) * | 2019-07-19 | 2019-10-01 | 华北电力大学 | A kind of high-temperature shaping phase-change heat-storage material and preparation method thereof |
| CN110295028B (en) * | 2019-07-19 | 2021-02-02 | 华北电力大学 | High-temperature shaping phase-change heat storage material and preparation method thereof |
| CN111978922A (en) * | 2020-07-31 | 2020-11-24 | 西安交通大学 | Hydrated salt-based medium-low temperature chemical heat storage material and preparation method thereof |
| CN111978922B (en) * | 2020-07-31 | 2021-04-23 | 西安交通大学 | Hydrated salt-based medium-low temperature chemical heat storage material and preparation method thereof |
| CN113214796A (en) * | 2021-04-12 | 2021-08-06 | 东南大学 | Composite inorganic salt phase change cold storage agent and preparation method thereof |
| CN116375420A (en) * | 2023-03-27 | 2023-07-04 | 广东省水利水电第三工程局有限公司 | Ultra-high performance concrete for steel bridge deck and preparation method and application thereof |
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