CN116606128A - Solid heat storage material and preparation method thereof - Google Patents
Solid heat storage material and preparation method thereof Download PDFInfo
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- CN116606128A CN116606128A CN202310588356.0A CN202310588356A CN116606128A CN 116606128 A CN116606128 A CN 116606128A CN 202310588356 A CN202310588356 A CN 202310588356A CN 116606128 A CN116606128 A CN 116606128A
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- solid heat
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- pyrophyllite
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- 239000007787 solid Substances 0.000 title claims abstract description 49
- 238000005338 heat storage Methods 0.000 title claims abstract description 48
- 239000011232 storage material Substances 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 229910052903 pyrophyllite Inorganic materials 0.000 claims abstract description 40
- 239000000919 ceramic Substances 0.000 claims abstract description 38
- 239000002699 waste material Substances 0.000 claims abstract description 32
- 239000004927 clay Substances 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000011230 binding agent Substances 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 239000007767 bonding agent Substances 0.000 claims abstract description 8
- 238000005245 sintering Methods 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 12
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 7
- 239000010884 boiler slag Substances 0.000 claims description 6
- 239000010881 fly ash Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000005995 Aluminium silicate Substances 0.000 claims description 5
- 235000012211 aluminium silicate Nutrition 0.000 claims description 5
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000395 magnesium oxide Substances 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 239000010453 quartz Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- 239000004115 Sodium Silicate Substances 0.000 claims description 4
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 4
- 239000010440 gypsum Substances 0.000 claims description 4
- 229910052602 gypsum Inorganic materials 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 4
- AZCUJQOIQYJWQJ-UHFFFAOYSA-N oxygen(2-) titanium(4+) trihydrate Chemical compound [O-2].[O-2].[Ti+4].O.O.O AZCUJQOIQYJWQJ-UHFFFAOYSA-N 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 4
- 229910001648 diaspore Inorganic materials 0.000 claims description 3
- 229910052900 illite Inorganic materials 0.000 claims description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 3
- VGIBGUSAECPPNB-UHFFFAOYSA-L nonaaluminum;magnesium;tripotassium;1,3-dioxido-2,4,5-trioxa-1,3-disilabicyclo[1.1.1]pentane;iron(2+);oxygen(2-);fluoride;hydroxide Chemical compound [OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[F-].[Mg+2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].[K+].[Fe+2].O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2 VGIBGUSAECPPNB-UHFFFAOYSA-L 0.000 claims description 3
- 229910052902 vermiculite Inorganic materials 0.000 claims description 3
- 239000010455 vermiculite Substances 0.000 claims description 3
- 235000019354 vermiculite Nutrition 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 3
- 238000009825 accumulation Methods 0.000 abstract description 4
- 230000007774 longterm Effects 0.000 abstract description 3
- 239000002893 slag Substances 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910001040 Beta-titanium Inorganic materials 0.000 description 2
- 229910021532 Calcite Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010433 feldspar Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052683 pyrite Inorganic materials 0.000 description 2
- 239000011028 pyrite Substances 0.000 description 2
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- RGPUVZXXZFNFBF-UHFFFAOYSA-K diphosphonooxyalumanyl dihydrogen phosphate Chemical compound [Al+3].OP(O)([O-])=O.OP(O)([O-])=O.OP(O)([O-])=O RGPUVZXXZFNFBF-UHFFFAOYSA-K 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
- C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
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- C—CHEMISTRY; METALLURGY
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention provides a solid heat storage material and a preparation method thereof, and relates to the technical field of heat storage materials. Specifically, the preparation method comprises the following raw materials in parts by weight: 30-50 parts of pyrophyllite, 10-25 parts of boiler waste residue, 8-20 parts of heat accumulating ceramic, 10-25 parts of clay and 5-15 parts of bonding agent. According to the invention, pyrophyllite, boiler waste residue and heat accumulating ceramic are adopted as main raw materials, and clay, a binding agent and the like are adopted as auxiliary materials to prepare the high-efficiency solid heat accumulating material, so that the solid heat accumulating material has lower cost under the condition of ensuring the high energy accumulating value of the solid heat accumulating material, has the characteristics of long-term latent heat accumulation and sensible heat accumulation, and has good application prospect.
Description
Technical Field
The invention relates to the technical field of heat storage materials, in particular to a solid heat storage material and a preparation method of the solid heat storage material.
Background
The heat storage material is a novel chemical material capable of storing heat energy. It undergoes a phase change at a specific temperature, accompanied by the absorption or release of heat, and can be used to control the temperature of the surrounding environment, or to store thermal energy. The heat storage material stores heat or cold, and releases the heat when needed, so that the utilization rate of energy is improved, and the purposes of high-efficiency utilization of energy and energy conservation are achieved.
Currently, in the heating and ventilation field, waste heat of industrial productivity, heat energy of clean energy and the like are stored in advance through a heat storage material by utilizing a heat storage technology, and released under the required condition. For example, solid heat storage plays a relatively important role in electric heat storage technology, electric energy is converted into heat energy by using valley period and stored in a solid heat storage material, and heat is released when the heat is needed.
In the prior art, the solid heat storage material mainly takes magnesia carbon bricks, but the preparation of the solid heat storage material is affected by the cost along with the reduction of magnesia resources, however, the cost of a large amount of slag waste materials in the industrial field is relatively low, but the solid heat storage material is not developed.
The Chinese patent CN115432993A (solid heat storage material, preparation method and application thereof) discloses a solid heat storage material prepared from low-grade pyrophyllite ore, clay and binding agent, which has the advantages of stable physicochemical property, good specific heat capacity and heat conduction property, and the like, and has the volume density of 2.11g/cm 3 The thermal conductivity is 1.0W/(m.K), the specific heat capacity is 0.82 kJ/(kg.K), the minimum water absorption is 7.65%, and the maximum compressive strength is 66.40MPa; however, the research finds that the solid heat storage material and the preparation method thereof in the prior art have high cost and do not have the characteristics of long-term latent heat storage and sensible heat storage.
In view of this, the present invention has been made.
Disclosure of Invention
The first aim of the invention is to provide a solid heat storage material which is prepared from the following raw materials in parts by weight: 30-50 parts of pyrophyllite, 10-25 parts of boiler waste residue, 8-20 parts of heat accumulating ceramic, 10-25 parts of clay and 5-15 parts of bonding agent.
Preferably, the solid heat storage material is prepared from the following raw materials in percentage by weight: 35-45% of pyrophyllite, 15-20% of boiler waste residue, 10-15% of heat accumulating ceramic, 13-20% of clay and 7-12% of bonding agent.
Preferably, the pyrophyllite is low-grade pyrophyllite ore; more preferably, the pyrophyllite has a particle size of 3mm to 5mm grade, 1mm to 3mm grade and 0mm to 1mm grade.
Preferably, the boiler waste residue comprises at least one of coal-fired boiler fly ash, boiler slag and desulfurized gypsum.
Preferably, the heat accumulating ceramic comprises lambda-type titanium pentoxide; more preferably, the heat accumulating ceramic is a block material with a particle size of 10 mm-20 mm.
Preferably, the clay includes at least one of kaolin, quartz, montmorillonite, diaspore, vermiculite, and illite.
Preferably, the binder is selected from at least one of sodium silicate, polyvinyl alcohol, magnesium oxide and silicon carbide.
The second object of the present invention is to provide a method for preparing the solid heat storage material, comprising the steps of: and fully mixing pyrophyllite, boiler waste residues, heat accumulating ceramics, clay and a binding agent, placing the mixture into a mold for molding, and then sequentially carrying out drying treatment and sintering treatment to obtain the solid heat accumulating material.
Preferably, the temperature of the drying treatment is 50-60 ℃, and the time of the drying treatment is 2-4 hours.
Preferably, the sintering treatment temperature is 1220-1360 ℃, and the sintering treatment time is 8-12 h.
Compared with the prior art, the invention has the beneficial effects that:
(1) According to the invention, pyrophyllite, boiler waste residue and heat accumulating ceramic are adopted as main raw materials, and clay, a binding agent and the like are adopted as auxiliary materials to prepare the high-efficiency solid heat accumulating material, so that the solid heat accumulating material has lower cost under the condition of ensuring the high energy accumulating value of the solid heat accumulating material, and has the characteristics of long-term latent heat accumulation and sensible heat accumulation.
(2) Compared with the heat storage materials in the prior art, the solid heat storage material provided by the invention has lower cost (the cost of boiler waste residue, heat storage ceramic, clay and binding agent is relatively low and far lower than the cost of iron ore); also, the preparation process of the invention is simple and convenient, and does not need high implementation cost; compared with the conventional existing process, the comprehensive cost of the invention can be reduced by 15-25%.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 provides a process flow diagram for example 1 of the present invention.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and detailed description, but it will be understood by those skilled in the art that the examples described below are some, but not all, examples of the present invention, and are intended to be illustrative of the present invention only and should not be construed as limiting the scope of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
The invention is implemented by the following modes: the solid heat storage material is prepared from the following raw materials: pyrophyllite, boiler waste residue, heat accumulating ceramic, clay and a binding agent; wherein, the weight parts of the components include but are not limited to: pyrophyllite 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50 (parts); boiler waste residues 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 and 25 (parts); heat accumulating ceramics 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 (parts); clay 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25 (parts) and binder 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 (parts).
As a preferred embodiment, the solid heat storage material is prepared from the following raw materials in percentage by weight: 35-45% of pyrophyllite, 15-20% of boiler waste residue, 10-15% of heat accumulating ceramic, 13-20% of clay and 7-12% of bonding agent; as a more preferred embodiment, the weight percentages of the individual components in the solid thermal storage material include, but are not limited to, 35%, 36%, 37%, 38%, 39%, 40%, 41%, 42%, 43%, 44%, 45% pyrophyllite; 15%, 16%, 17%, 18%, 19% and 20% of boiler waste residues; 10%, 11%, 12%, 13%, 14%, 15% of heat accumulating ceramic; 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20% and 7%, 8%, 9%, 10%, 11%, 12% of the binder.
Pyrophyllite is clay mineral formed by low-temperature hydrothermal alteration, and has a structural formula of Al 2 [Si 4 O 10 ](OH) 2 The theoretical chemical composition is Al 2 O 3 28.3％，SiO 2 66.7％，H 2 O5.0%; the pyrophyllite has the advantages of fine texture, low hardness, high processability, high refractoriness, good insulativity, stable chemical property and the like, and the pure pyrophyllite has the refractoriness of 1170 ℃; the fire resistance of natural pyrophyllite increases with the increase of the aluminum content, and the fire resistance decreases with the high content of iron, potassium and sodium. As a preferred embodiment, the invention adopts low-grade pyrophyllite ore, namely, the pyrophyllite has lower purity in the pyrophyllite ore; the main components of the low-grade pyrophyllite ore comprise pyrophyllite, quartz, calcite, pyrite and the like; as a more preferred embodiment, the pyrophyllite has a particle size of 3-5 mm, 1-3 mm and 0-1 mm.
As a preferred embodiment, the boiler waste residue includes at least one of coal-fired boiler fly ash, boiler slag, and desulfurized gypsum. By using a large amount of solid waste generated by an industrial boiler as a raw material, recycling of resources is realized, and high economic value is realized. As a more preferable embodiment, the filtered waste residue is subjected to pretreatment such as grinding, sieving and the like, and the invention is implemented by using boiler waste residue powder.
As a preferred embodiment, the heat accumulating ceramic comprises lambda-type titanium pentoxide; as a more preferred embodiment, the thermal storage ceramic is a block, the particle size of which includes, but is not limited to, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 (mm).
In the present invention, for ceramics of λ -titanium pentoxide: if a weaker induction pressure is applied to the ceramic full of heat energy, the structure of the ceramic is changed and converted into beta-titanium pentoxide, and then the heat energy accumulated in the ceramic can be emitted; conversely, if β -titanium pentoxide is heated, it will revert to λ -titanium pentoxide at a certain temperature and continue to absorb heat. Since this reversible transformation can repeatedly occur, the heat accumulating ceramic can repeatedly accumulate heat and dissipate heat when used in the solid heat accumulating material of the present invention.
Meanwhile, in the invention, the boiler waste residue raw material and the heat accumulating ceramic can be combined to form the solid heat accumulating material in a mixed form. The mixed form has the characteristics of the boiler waste residue raw material and the heat accumulating ceramic, and also has the new characteristics brought by the interaction and the synergistic effect of the boiler waste residue raw material and the heat accumulating ceramic (the technical effect of the mixed form is mainly that the two are fully mixed and finally adhered under the action of a bonding agent to form the solid heat accumulating material).
As a preferred embodiment, the clay includes at least one of kaolin, quartz, montmorillonite, diaspore, vermiculite, and illite; as a preferred embodiment, the binder includes at least one of sodium silicate, polyvinyl alcohol, magnesium oxide, and silicon carbide; as another preferred embodiment, the binder is at least one selected from the group consisting of a ceramic binder and a solid binder, wherein the ceramic binder comprises the following components in percentage by mass: 0-60% of boron glass powder, 0-40% of magnesium feldspar and 0-40% of aluminum feldspar, wherein the solid bonding agent comprises solid aluminum dihydrogen phosphate.
The preparation of the solid heat storage material according to the present invention is carried out by: and fully mixing pyrophyllite, boiler waste residues, heat accumulating ceramics, clay and a binding agent, placing the mixture into a mold for molding, and then sequentially carrying out drying treatment and sintering treatment to obtain the solid heat accumulating material.
As a preferred embodiment, the temperature of the drying process includes, but is not limited to; the drying process time includes, but is not limited to, 2, 2.5, 3, 3.5, 4 (h).
As a preferred embodiment, the temperature of the sintering process includes, but is not limited to 1220, 1250, 1275, 1300, 1325, 1350, 1360 (°c), and the time of the sintering process includes, but is not limited to 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12 (h).
Example 1
This example was prepared using the process flow shown in fig. 1. Specifically:
step one, mixing operation treatment: according to the weight portions, firstly, 50 portions of low-grade pyrophyllite ore, 25 portions of boiler waste slag, 20 portions of heat accumulating ceramic lump materials, 25 portions of clay and 15 portions of adhesive are uniformly mixed to form a mixture; the pyrophyllite composition information comprises pyrophyllite, quartz, calcite and pyrite, the filtering waste slag is a mixture of coal-fired boiler fly ash, boiler slag and desulfurized gypsum (the mass ratio of the coal-fired boiler fly ash to the boiler slag is 1:1:1), the heat accumulating ceramic block is lambda-type titanium pentoxide, the clay is kaolin, and the adhesive is sodium silicate.
Step two, molding operation treatment: placing the mixture in a mould, and then pressing the mixture into a sheet-shaped structure;
step three, secondary molding and drying operation treatment: stacking a plurality of sheet-shaped structures up and down, placing the sheet-shaped structures into an oven, keeping the drying temperature between 60 ℃, and drying for 3 hours; forming a dried blocky heat-accumulating raw material block after drying for a preset drying time period;
step four, sintering operation treatment: and sintering the blocky heat storage raw material blocks for 12 hours at 1220 ℃ and then cooling to obtain the solid heat storage material.
Example 2
Substantially the same as in example 1, the only difference is that: the sintering temperature in the fourth step is 1360 ℃, and the sintering time is 8 hours.
Example 3
Substantially the same as in example 1, the only difference is that: and in the fourth step, the sintering temperature is 1300 ℃, and the sintering time is 10 hours.
Example 4
Substantially the same as in example 1, the only difference is that: the sintering temperature in the fourth step is 1325 ℃, and the sintering time is 9h.
Example 5
Substantially the same as in example 1, the only difference is that: in the first step, 30 parts of pyrophyllite, 10 parts of boiler waste slag, 8 parts of heat accumulating ceramic block, 10 parts of clay and 5 parts of adhesive are uniformly mixed to form a mixture.
Example 6
Substantially the same as in example 1, the only difference is that: in the first step, 35 parts of pyrophyllite, 15 parts of boiler waste slag, 10 parts of heat accumulating ceramic block materials, 13 parts of clay and 7 parts of adhesive are uniformly mixed to form a mixture.
Example 7
Substantially the same as in example 1, the only difference is that: 45 parts of pyrophyllite, 20 parts of boiler waste slag, 15 parts of heat accumulating ceramic block, 20 parts of clay and 12 parts of adhesive are uniformly mixed to form a mixture.
Example 8
Substantially the same as in example 1, the only difference is that: in the first step, 40 parts of pyrophyllite ore, 18 parts of boiler waste slag, 12 parts of heat accumulating ceramic blocks, 16 parts of clay and 10 parts of adhesive are uniformly mixed to form a mixture.
Example 9
Substantially the same as in example 1, the only difference is that: the filtered waste slag is coal-fired boiler fly ash and boiler slag; the binder is polyvinyl alcohol.
Example 10
Substantially the same as in example 1, the only difference is that: the clay is montmorillonite and kaolin (the mass ratio is 1:1); the binder is silicon carbide.
Comparative example 1
Substantially the same as in example 8, the only difference is that: no thermal storage ceramic block is added, and the weight part of pyrophyllite ore is 52 parts.
Comparative example 2
Substantially the same as in example 8, the only difference is that: no boiler waste slag is added, and the weight part of the pyrophyllite ore is 58 parts.
Test examples
The solid heat storage materials prepared in the above examples and comparative examples were subjected to performance tests. The test results are shown in table 1 below.
TABLE 1
Compared with the heat storage material prepared by the comparative example, the heat storage material prepared by the embodiment of the invention has the advantages that the specific heat capacity is obviously improved (the specific heat capacity is improved by about 14-30 percent), the heat storage capacity of the heat storage material with the same volume is obviously improved, and the compression resistance is also improved.
While the invention has been illustrated and described with reference to specific embodiments, it is to be understood that the above embodiments are merely illustrative of the technical aspects of the invention and not restrictive thereof; those of ordinary skill in the art will appreciate that: modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some or all of the technical features thereof, without departing from the spirit and scope of the present invention; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions; it is therefore intended to cover in the appended claims all such alternatives and modifications as fall within the scope of the invention.
Claims (10)
1. The solid heat storage material is characterized by comprising the following raw materials in parts by weight: 30-50 parts of pyrophyllite, 10-25 parts of boiler waste residue, 8-20 parts of heat accumulating ceramic, 10-25 parts of clay and 5-15 parts of bonding agent.
2. The solid heat storage material according to claim 1, wherein the solid heat storage material is prepared from the following raw materials in percentage by weight: 35-45% of pyrophyllite, 15-20% of boiler waste residue, 10-15% of heat accumulating ceramic, 13-20% of clay and 7-12% of bonding agent.
3. The solid heat storage material according to claim 1, wherein the pyrophyllite is low grade pyrophyllite ore;
preferably, the pyrophyllite has a particle size of 3-5 mm, 1-3 mm and 0-1 mm.
4. The solid heat storage material of claim 1, wherein the boiler waste residue comprises at least one of coal-fired boiler fly ash, boiler slag, and desulfurized gypsum.
5. The solid heat storage material according to claim 1, wherein the heat storage ceramic comprises lambda-type titanium pentoxide;
preferably, the heat accumulating ceramic is a block material with the particle size of 10 mm-20 mm.
6. The solid heat storage material according to claim 1, wherein the clay comprises at least one of kaolin, quartz, montmorillonite, diaspore, vermiculite, and illite.
7. The solid heat storage material according to claim 1, wherein the binder comprises at least one of sodium silicate, polyvinyl alcohol, magnesium oxide, and silicon carbide.
8. The method for producing a solid heat storage material according to any one of claims 1 to 7, comprising the steps of: and fully mixing pyrophyllite, boiler waste residues, heat accumulating ceramics, clay and a binding agent, placing the mixture into a mold for molding, and then sequentially carrying out drying treatment and sintering treatment to obtain the solid heat accumulating material.
9. The method for producing a solid heat-accumulative material of claim 8, wherein the drying treatment is carried out at 50-60 ℃ for 2-4 hours.
10. The method for producing a solid heat-accumulative material of claim 8, wherein the sintering treatment is carried out at 1220-1360 ℃ for 8-12 hours.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105481344A (en) * | 2015-12-17 | 2016-04-13 | 上海高诚创意科技集团有限公司 | Method for preparing ceramics capable of repeatedly storing heat |
| CN111517816A (en) * | 2020-04-30 | 2020-08-11 | 新沂市正达高新石英材料有限公司 | Efficient heat storage ceramic-based material and preparation process thereof |
| WO2020195956A1 (en) * | 2019-03-27 | 2020-10-01 | パナソニックＩｐマネジメント株式会社 | Heat-insulating member and electronic appliance |
| JP2021008390A (en) * | 2019-07-02 | 2021-01-28 | パナソニックＩｐマネジメント株式会社 | Titanium oxide material, heat storage/radiation device, and method for producing titanium oxide material |
| CN114349476A (en) * | 2021-12-27 | 2022-04-15 | 中国华能集团清洁能源技术研究院有限公司 | Preparation method of solid heat storage material and solid heat storage material |
| CN114835399A (en) * | 2022-05-17 | 2022-08-02 | 江西博鑫环保科技股份有限公司 | High-acid-resistance high-compactness high-silicon heat storage honeycomb ceramic filler |
| CN115432993A (en) * | 2022-09-23 | 2022-12-06 | 内蒙古梅捷新能源科技有限公司 | Solid heat storage material and preparation method and application thereof |
-
2023
- 2023-05-23 CN CN202310588356.0A patent/CN116606128A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105481344A (en) * | 2015-12-17 | 2016-04-13 | 上海高诚创意科技集团有限公司 | Method for preparing ceramics capable of repeatedly storing heat |
| WO2020195956A1 (en) * | 2019-03-27 | 2020-10-01 | パナソニックＩｐマネジメント株式会社 | Heat-insulating member and electronic appliance |
| JP2021008390A (en) * | 2019-07-02 | 2021-01-28 | パナソニックＩｐマネジメント株式会社 | Titanium oxide material, heat storage/radiation device, and method for producing titanium oxide material |
| CN111517816A (en) * | 2020-04-30 | 2020-08-11 | 新沂市正达高新石英材料有限公司 | Efficient heat storage ceramic-based material and preparation process thereof |
| CN114349476A (en) * | 2021-12-27 | 2022-04-15 | 中国华能集团清洁能源技术研究院有限公司 | Preparation method of solid heat storage material and solid heat storage material |
| CN114835399A (en) * | 2022-05-17 | 2022-08-02 | 江西博鑫环保科技股份有限公司 | High-acid-resistance high-compactness high-silicon heat storage honeycomb ceramic filler |
| CN115432993A (en) * | 2022-09-23 | 2022-12-06 | 内蒙古梅捷新能源科技有限公司 | Solid heat storage material and preparation method and application thereof |
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