CN1141356C - Preparation technology of package type composite thermophore - Google Patents
Preparation technology of package type composite thermophore Download PDFInfo
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- CN1141356C CN1141356C CNB021341168A CN02134116A CN1141356C CN 1141356 C CN1141356 C CN 1141356C CN B021341168 A CNB021341168 A CN B021341168A CN 02134116 A CN02134116 A CN 02134116A CN 1141356 C CN1141356 C CN 1141356C
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Abstract
The present invention relates to a preparation method for wrapped type composite heat accumulators. In the method, after a sensible heat accumulation material, a latent heat accumulation material and a small amount of metal power material are uniformly blended, an adhesive and water are added to be made into a primary body in a first level granulator and then enter a secondary granulator, simultaneously, a certain of proportion of sensible heat accumulation material power, adhesive and water is added to be made into a composite heat accumulator final body with the sensible heat accumulation material wrapped on the first level body, and after drying and sintering, the finished product of the wrapped type composite heat accumulator is obtained. The finished product which has the advantages of large heat accumulation density, good chemical stability and stable energy output overcomes the defect of erosion caused by easy flow of latent heat materials.
Description
One. technical field: composite heat storage material preparation.
Two. background technology: the storing technology of heat energy is the utilization ratio that improves heat energy, satisfies an important step of various energy resources needs.This technology is at waste heat recovery, power peak regulation and will be interrupted and use the energy (as sun power, wind energy etc.) to be converted into aspect the sustainable use energy, and wide prospect is arranged.Energy consumption at China's industrial furnace accounts for more than 20% of whole energy consumptions, and nearly 50% the energy is failed to effectively utilize and slatterned in vain in the industrial application.Adopt effective energy storage technology to seem particularly important when therefore, developing the new energy and minimizing energy dissipation.
Solid sensible heat material has chemistry and good mechanical stability, good, the good heat-transfer of security, but the heat storage capacity of unit weight (volume) is less, and very difficult maintenance is absorbed heat and characteristics such as heat release at a certain temperature.The heat storage capacity that the latent-heat storage material has unit weight (volume) heat-storing material is big.Use near the phase change temperature the temperature range can to keep absorbing heat at a certain temperature and heat release, chemical stability is good, security is good, but liquid-solid two-phase characteristics such as heat-transfer effect difference at the interface during phase change.Two inventions of the applicant's application are respectively " a kind of preparation technology of composite heat storage material and combination filling regenerator " (number of patent application is 01133785.0) and " a kind of preparation method of metal-base composite fused salt as heat accumulating material " (number of patent application is 02133310.6).The high temperature composite heat storage material that is developed into is to utilize pottery or metal to carry out compound as the matrix and the melt phase change inorganic salt of matrix material, inorganic salt are distributed among pottery or the metallic matrix, and, in the surface deposition one deck and the matrix identical materials of composite heat storage material.When being heated and surpass the fusing point of inorganic salt, inorganic salt fusing and absorb latent heat, pottery or metal absorb sensible heat and with the heat exchanging fluid contact heat-exchanging.The present invention is on the basis of existing Composite Preparation technology, improve technical process, overcoming hidden heat body in the time of both the multiple composition in the matrix material can having been carried out rational and effective distribution and latent-heat storage easily flows out, more can possess the premium properties that composite heat storage material has, composite material preparation process simplification, technical requirements difficulty are reduced significantly, greatly reduce the cost of manufacture of heat storage and the cost that adopts the heat storage technology recovery waste heat.
Three. technology contents:
1. the objective of the invention is to propose a kind of preparation method of coated composite heat storage material, this method is that sensible heat heat-storing material and latent-heat storage material elder generation batching mixing are made elementary base substrate.Outside elementary base substrate, superscribe the spheroid of level eventually that one deck sensible heat heat-storing material is made then again, make the multiple components in the composite heat storage material, rationally, effectively distribute, overcome the runny trouble of latent-heat storage material, had more the premium properties that composite heat storage material has.
2. technical scheme: Fig. 1 is a process flow sheet of the present invention.
1) technical process: sensible heat heat-storing material powder and latent-heat storage material powder and metal-powder are made raw material; behind the batching mixing, in one-level system material machine, add binding agent; make elementary base substrate; elementary base substrate enters the secondary nodulizer; add identical sensible heat heat-storing material powder, binding agent and water; make package type composite thermophore level base substrate eventually, the drying sintering obtains the package type composite thermophore finished product.
2) processing condition 1. the latent-heat storage material be the lithium salts class, sodium salt class, the mixture of sylvite class and above-mentioned three kinds of salts; 2. the sensible heat heat-storing material is that carbonization is siliceous, and oxidation is siliceous, aluminum oxide, magnesia, zirconium white matter, silicon nitride, carborundum high-alumina clay, corundum, mullite, pottery, potter's clay class, cast iron powder; 3. metal-powder is: the non-ferrous metal powder; 4. the weight percent of three kinds of raw materials is latent-heat storage materials: the sensible heat heat-storing material: metal-powder=20～60%: 40～80%: 0～5%; 5. the particle diameter of three kinds of powders is below the 0.05mm; 6. binding agent is an alcohol, phosphoric acid, water; 7. the weight of binder that adds in the one-level nodulizer is 5～12% of a raw material gross weight; 8. the ingredients by weight per-cent during secondary is granulated: one-level base substrate: sensible heat heat-storing material: binding agent=90～95%: 4～6%: 0.5～1%; 9. be dried to and contain moisture below 5%; 10. sintering temperature is different and different with selected raw material because of sintering time, and value is that the texturing temperature of the sensible heat heat-storing material that specific surface wrapped up is high 7～15 ℃, and the time is 20～60 hours;
3. compare advantage and the positively effect that has with known technology:
1. package type composite thermophore not only had both solid phase sensible heat heat-storing material and latent heat of phase change heat-storing material advantage, but also overcome both deficiencies.
2. this kind NEW TYPE OF COMPOSITE heat-storing material has the stable and sensible heat energy-storage travelling wave tube of the big and energy output of hidden heat energy storage density and can join the advantage of contact heat-exchanging with heat exchanging fluid, has overcome latent-heat storage material melting salt again and has easily flowed out and cause the corrosive shortcoming.
3. the character (viscosity of granularity, relative shape and per surface area, fused salt etc.) to material requires low, easily compound.
4. the per-cent height that latent-heat storage material melting salt accounts in the composite heat storage material.
5. technology is simple, and is easy to operate, easily control.
6. package type composite thermophore has the chemical stability height, energy storage density is high and cheap.Four. description of drawings: Fig. 1 is a process flow sheet of the present invention.Five. embodiment:
Embodiment 1) implementation condition
The sensible heat heat-storing material adopts 50% aluminum oxide (Al
2O
3) the matter ceramic powder, 3% aluminium powder; The latent-heat storage material adopts 22% yellow soda ash (Na
2CO
3)-25% barium carbonate (BaCO
3) melt phase change inorganic salt powder; Spray into 9% atomized water in the one-level nodulizer, making intensity is 2.1Mpa, and particle diameter is the elementary base substrate of φ 2.8～4.7mm; Elementary base substrate and 4% aluminum oxide (Al in the secondary nodulizer
2O
3) matter ceramic powder and 1% phosphoric acid makes the circular granular of φ 3～5mm, intensity 1.9Mpa, sintering temperature is 1050～1080 ℃, sintering time is 24 hours.2) result of implementation
Product intensity is 98Mpa, particle diameter φ 3～5mm.The thermal storage density of prepared composite heat storage material when 400K, 600K, 1200K is respectively 384.4,575.1,1188.4kJ/kg.
Embodiment 21) implementation condition
Obviously heat-storing material adopts the siliceous pottery of 52% oxidation, and the latent-heat storage material adopts 48% sodium sulfate (K
2SO4), spray into 10% water in the one-level nodulizer, making intensity is 2Mpa, and particle diameter is the elementary base substrate of φ 7.9～9.9mm; Elementary base substrate and 4% silicon nitride (Si in the secondary nodulizer
3N
4) matter ceramic powder and 0.8% phosphoric acid makes the circular granular of φ 8～10mm, intensity 1.9Mpa, sintering temperature is 1145～1150 ℃, sintering time 45 hours.2) result of implementation
Product intensity is 135Mpa, particle diameter φ 8～10mm.The thermal storage density of prepared composite heat storage material when 400K, 800K, 1200K is respectively 378.3,756.5,1360.1kJ/kg.
Embodiment 31) implementation condition
The sensible heat heat-storing material adopts 46% carbonization (SiC) matter ceramic powder, 5% cast iron powder; The latent-heat storage material adopts 49% carbonic acid (Li
2CO
3) melt phase change inorganic salt powder; Spray into 11% water in the one-level nodulizer, making intensity is 1.8Mpa, and particle diameter is the elementary base substrate of φ 3.4～5.4mm; Elementary base substrate and 6% zirconium white (Zr in the secondary nodulizer
2O
3) matter ceramic powder and 1% water makes the circular granular of φ 3.5～5.5mm, intensity 1.8Mpa, sintering temperature is 1350～1370 ℃, sintering time is 54 hours.2) the result of implementation product intensity is 115Mpa, particle diameter φ 3.5～5.5mm.The thermal storage density of prepared composite heat storage material when 600K, 800K, 1200K is respectively 643.2,857.5,1337.8kJ/kg.
Claims (4)
1. the preparation technology of a package type composite thermophore is characterized in that:
1) technical process: with behind sensible heat heat-storing material and latent-heat storage material powder and the metal-powder mixing in the one-level nodulizer, adding additives, water are made elementary base substrate, elementary base substrate enters the secondary nodulizer, add identical sensible heat heat-storing material powder, binding agent, water and make package type composite thermophore level base substrate eventually, drying obtains the package type composite thermophore finished product behind the sintering;
2) technical qualification: 1. the latent-heat storage material is the mixed powder of lithium salts class, sodium salt class, sylvite class and above-mentioned three kinds of salts; 2. the sensible heat heat-storing material is that carbonization is siliceous, and oxidation is siliceous, aluminum oxide, and magnesia, zirconium white matter, oxidation is siliceous, carborundum high-alumina clay, corundum, mullite, pottery, potter's clay class, cast iron powder; 3. metal-powder is cast iron or aluminium; 4. the weight percent of three kinds of raw materials is latent-heat storage materials: the sensible heat heat-storing material: metal-powder=20～60%: 40～80%: 0～5%; 5. the particle diameter of three kinds of powders is below the 0.05mm; 6. binding agent is an alcohol, phosphoric acid (concentration 85%), water; 7. the weight percent of the binding agent that adds in the one-level nodulizer is 5～12%; 8. the ingredients by weight per-cent during secondary is granulated is the one-level base substrate: sensible heat heat-storing material: binding agent=90～95%: 4～6%: 0.5～1%; 9. be dried to moisture being divided into below 5%; 10. sintering temperature is different and different with selected raw material with sintering time, and value is that the texturing temperature of the sensible heat heat-storing material that specific surface wrapped up is high 7～15 ℃, and the time is 20～60 hours,
2. the technology of preparation package type composite thermophore according to claim 1, it is characterized in that: employing 50% was alumina powder jointed during one-level was granulated, 22% yellow soda ash adds 25% barium carbonate, 3% aluminium powder sprays into 9% atomized water, in secondary is granulated, elementary base substrate and 4% aluminum oxide and 1% phosphoric acid are made the circular granular of φ 3-5mm, 1050～1080 ℃ of sintering temperatures, sintering time 24 hours
3. the technology of preparation package type composite thermophore according to claim 1, it is characterized in that: during one-level is granulated, adopt 52% silicon oxide, 48% sodium sulfate, spray into 10% water, the phosphoric acid of elementary base substrate and 4% silicon nitride powder and 0.8% is made the circular granular of φ 8-10mm, 1145～1150 ℃ of sintering temperatures in secondary is granulated, sintering time 45 hours
4. the technology of preparation package type composite thermophore according to claim 1, it is characterized in that: during one-level is granulated, adopt 46% silicon carbide, 5% cast iron powder, 49% Quilonum Retard, 11% water, elementary base substrate and 6% zirconium white in secondary is granulated, 1% water is made the circular granular of φ 3.5～5.5mm, 1350～1370 ℃ of sintering temperatures, sintering time 54 hours.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB021341168A CN1141356C (en) | 2002-11-16 | 2002-11-16 | Preparation technology of package type composite thermophore |
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| CNB021341168A CN1141356C (en) | 2002-11-16 | 2002-11-16 | Preparation technology of package type composite thermophore |
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| CN1141356C true CN1141356C (en) | 2004-03-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429014B (en) * | 2008-12-17 | 2011-12-14 | 潘国明 | Inorganic salt/ceramic based composite heat-storing material produced with waste chromic hydroxide and producing method thereof |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788239B (en) * | 2010-03-04 | 2012-02-08 | 武汉理工大学 | Method for preparing ceramic thermal storage ball coating phase-change materials |
| CN102192651A (en) * | 2010-03-19 | 2011-09-21 | 丹阳市江南工业炉有限公司 | Novel high-efficiency energy-saving heat-accumulating industrial furnace |
| CN102585775B (en) * | 2012-01-20 | 2015-09-30 | 中国科学院过程工程研究所 | A kind of High-temperature composite phase change heat and preparation method thereof |
| CN105349112B (en) * | 2014-08-18 | 2019-03-15 | 武汉理工大学 | A kind of high temperature fused salt/Ceramic Composite heat storage and preparation method thereof |
| CN106318338B (en) * | 2016-08-19 | 2019-04-09 | 武汉科技大学 | In-situ alloy-oxide complex phase thermal storage refractory and preparation method thereof |
| CN106518125A (en) * | 2016-12-08 | 2017-03-22 | 赵岩 | Composite phase-change heat storage brick coated by refractory material |
| CN107337436B (en) * | 2017-05-18 | 2020-03-10 | 全球能源互联网研究院有限公司 | Phase-change heat storage material and preparation method thereof |
| CN108048044A (en) * | 2017-12-12 | 2018-05-18 | 天津琪臻节能科技有限公司 | Inorganic salts-ceramic base thermal energy storage material and preparation method thereof |
| CN114177916B (en) * | 2022-02-14 | 2022-05-10 | 天津市环境保护技术开发中心设计所有限责任公司 | Miscellaneous salt heat storage carrier flue gas catalytic material and preparation method thereof |
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2002
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429014B (en) * | 2008-12-17 | 2011-12-14 | 潘国明 | Inorganic salt/ceramic based composite heat-storing material produced with waste chromic hydroxide and producing method thereof |
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