CN114177916B - Miscellaneous salt heat storage carrier flue gas catalytic material and preparation method thereof - Google Patents
Miscellaneous salt heat storage carrier flue gas catalytic material and preparation method thereof Download PDFInfo
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- 150000003839 salts Chemical class 0.000 title claims abstract description 48
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 44
- 239000000463 material Substances 0.000 title claims abstract description 37
- 238000005338 heat storage Methods 0.000 title claims abstract description 32
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 239000003546 flue gas Substances 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000002923 metal particle Substances 0.000 claims abstract description 15
- 229910010293 ceramic material Inorganic materials 0.000 claims abstract description 14
- 230000005291 magnetic effect Effects 0.000 claims abstract description 13
- 238000000465 moulding Methods 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 230000003647 oxidation Effects 0.000 claims abstract description 6
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 6
- 238000001354 calcination Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000005507 spraying Methods 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 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 claims description 7
- 239000002243 precursor Substances 0.000 claims description 6
- 230000005294 ferromagnetic effect Effects 0.000 claims description 5
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 5
- 238000004064 recycling Methods 0.000 claims description 4
- 239000005995 Aluminium silicate Substances 0.000 claims description 3
- 229910052656 albite Inorganic materials 0.000 claims description 3
- 235000012211 aluminium silicate Nutrition 0.000 claims description 3
- 229910052595 hematite Inorganic materials 0.000 claims description 3
- 239000011019 hematite Substances 0.000 claims description 3
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 claims description 3
- 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 3
- 229910002230 La2Zr2O7 Inorganic materials 0.000 claims description 2
- 229910002867 Sr2FeMoO6 Inorganic materials 0.000 claims description 2
- 229910003112 MgO-Al2O3 Inorganic materials 0.000 claims 1
- 229910052594 sapphire Inorganic materials 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 4
- 238000012216 screening Methods 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 description 18
- 239000000919 ceramic Substances 0.000 description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000007084 catalytic combustion reaction Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 239000008139 complexing agent Substances 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910002520 CoCu Inorganic materials 0.000 description 1
- 229910002521 CoMn Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/889—Manganese, technetium or rhenium
- B01J23/8892—Manganese
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
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- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
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- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/14—Phosphorus; Compounds thereof
- B01J27/16—Phosphorus; Compounds thereof containing oxygen, i.e. acids, anhydrides and their derivates with N, S, B or halogens without carriers or on carriers based on C, Si, Al or Zr; also salts of Si, Al and Zr
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- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/20—Carbon compounds
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- 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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Abstract
The invention provides a preparation method of a novel miscellaneous salt heat storage carrier flue gas catalytic material, which comprises the following steps: (1) determining the addition amount of miscellaneous salt; (2) calcining miscellaneous salt to remove impurities; (3) mixing the ceramic material obtained by screening in the step (1), the miscellaneous salt calcined in the step (2) and the strong magnetic metal particles, carrying out high-temperature pre-oxidation and hot press molding to fully sinter the sample, cooling to room temperature, dissolving the weak magnetic metal powder, spraying and drying to obtain the material. The novel mixed salt heat storage carrier flue gas catalytic material provided by the invention enables mixed salt to be recycled, has the advantages of a solid sensible heat catalytic material and latent heat storage, and overcomes the defects of the solid sensible heat catalytic material and the latent heat storage, so that the novel mixed salt heat storage carrier flue gas catalytic material has the specific properties of quick heat release, quick heat storage and large heat storage capacity.
Description
Technical Field
The invention belongs to the field of waste salt recycling, and particularly relates to a novel mixed salt catalytic material and a preparation method thereof.
Background
As industry develops, a large number of organic pollutants are produced, volatile organic pollutants (VOCs) being typical of gas phase pollutants. Catalytic combustion is one of the most widely used technologies in volatile organic compound treatment, and the core of the catalytic combustion is the selection of a catalyst. Monolithic catalysts have received much attention because they overcome the disadvantages of conventional particulate catalysts in practical industrial applications. The method takes the low-cost and rich-source mixed salt as a carrier, and the composite oxides such as CoMn, CoCu and the like are loaded on the carrier through an impregnation method to prepare the monolithic catalyst, and the prepared monolithic catalyst has obvious advantages in the aspect of VOCs catalytic activity and further shows excellent catalytic oxidation capability.
Disclosure of Invention
In view of the above, the invention provides a mixed salt heat storage carrier flue gas catalytic material and a preparation method thereof, aiming at overcoming the defects in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a preparation method of a miscellaneous salt heat storage carrier flue gas catalytic material comprises the following steps:
(1) determining the addition amount of miscellaneous salt;
(2) calcining miscellaneous salt to remove impurities;
(3) and (3) mixing the miscellaneous salt calcined in the step (2) with a ceramic material and strong magnetic metal particles, carrying out high-temperature preoxidation and hot press molding to fully sinter a sample to obtain a preform, cooling to room temperature, preparing weak magnetic metal powder into a precursor solution, spraying the precursor solution on the preform, and drying to obtain the material.
Further, the mass ratio of the mixed salt to the ceramic material to the ferromagnetic metal particles in the step (1) is 20-50:20-30: 20-40.
Further, the strong magnetic metal particles in the step (3) are magnetite and/or hematite; the weak magnetic metal powder in the step (3) is at least one of iron powder, La2CoAlO6, Co8Mn0.5Fe0.5Ox, Sr2FeMoO6 or La2Zr2O 7.
Further, the temperature of the high-temperature pre-oxidation step in the step (3) is 800-1600 ℃, and the time is 5-30 min; the temperature of the hot-press molding step in the step (3) is 1100-; the temperature of the drying step in the step (3) is 80-100 ℃, and the time is 8-16 hours.
Further, the temperature rise rate of the calcination step in the step (2) is 5-20 ℃/min, the temperature is 600-1200 ℃, and the time is 4-8 hours.
Further, the ceramic material in the step (1) is at least one of aluminum dihydrogen phosphate, SiC powder, kaolin, albite, MgO or alpha-Al 2O 3.
A mixed salt heat storage carrier flue gas catalytic material is prepared from the following raw materials in parts by weight:
20-50 parts of mixed salt,
20-30 parts of a ceramic material,
20-40 parts of ferromagnetic metal particles.
Further, the recycling temperature of the flue gas catalytic material is 200-600 ℃.
Preferably, the recycling temperature of the miscellaneous gas catalytic material is 400-600 ℃.
Further, the strong magnetic metal particles are magnetite and/or hematite.
Further, the ceramic material is at least one of aluminum dihydrogen phosphate, SiC powder, kaolin, albite, MgO or alpha-Al 2O 3.
The miscellaneous salt is recycled, and the finished product of the thermal storage ceramic VOCs catalytic oxidation material has the advantages of both VOCs integral catalyst and latent heat storage, and overcomes the defects of the VOCs integral catalyst and the latent heat storage, so that the thermal storage ceramic VOCs catalytic oxidation material has the unique performances of quick heat release and quick heat storage, large thermal storage capacity, high catalytic activity and the like.
Waste miscellaneous salt obtained by evaporation crystallization belongs to hazardous waste, but the waste miscellaneous salt is pyrolyzed and calcined in a rotary kiln, organic pollutants such as COD (chemical oxygen demand) and the like are removed, the waste miscellaneous salt is changed into miscellaneous salt containing a small amount of heavy metal particles (aluminum, nickel, iron, chromium, titanium and the like), and then the miscellaneous salt is mixed with one or more of SiC, MgO, AL2O3 and aluminum dihydrogen phosphate and then is subjected to hot dry pressing and molding. In the process, part of the miscellaneous salt is dissolved or gasified, and a porous structure is formed inside, so that the heat storage effect is enhanced.
The presence of ductile metal particles (aluminum, nickel, iron, chromium, titanium, etc.) or some second phase particles of high strength, high melting point, high modulus of elasticity nitrides, carbides, etc., absorbs the external stresses through the plasticity of these particles. The metal particles as ductile second phases not only improve the sinterability of the ceramic, but also can hinder the propagation of ceramic cracks in many ways, so that the fracture toughness and the bending strength of the ceramic material are significantly improved.
Compared with the prior art, the invention has the following advantages:
the mixed salt heat storage carrier flue gas catalytic material provided by the invention has the advantages that the mixed salt is recycled, the advantages of a solid sensible heat catalytic material and latent heat storage are realized, and the defects of the solid sensible heat catalytic material and the latent heat storage are overcome, so that the mixed salt heat storage carrier flue gas catalytic material has the specific performances of quick heat release, quick heat storage and large heat storage capacity; the conduction and heat storage capacity of the catalytic material containing heavy metal and molten salt are greatly enhanced, a thin layer of metal heat storage catalytic material is coated on a gap left by evaporation of low-volatility miscellaneous salt, the layer of metal material is mutually coupled with a magnetic metal material in a heat storage carrier through magnetic force, and the generated carrier has both adsorbability and high latent heat.
The metal particles in the mixed salt heat storage carrier flue gas catalysis material are used as a ductile second phase, so that the sintering property of the ceramic is improved, the expansion of ceramic cracks can be hindered in various ways, the fracture toughness and the bending strength of the ceramic material are obviously improved, and the contribution to zero emission of wastewater is made.
Detailed Description
Unless defined otherwise, technical terms used in the following examples have the same meanings as commonly understood by one of ordinary skill in the art to which the present invention belongs. The test reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the experimental methods are conventional methods unless otherwise specified.
The present invention will be described in detail with reference to examples.
Example 1
A preparation method of a miscellaneous salt heat storage carrier flue gas catalytic material comprises the following steps:
(1) 30 parts of miscellaneous salt (the miscellaneous salt contains NaCl and NaSO4, wherein the molar weight of Cl-is 2-6 times of SO 42-), 30 parts of aluminum dihydrogen phosphate and 40 parts of magnetite, wherein the industrial wastewater is treated and separated;
(2) mechanically mixing calcined miscellaneous salt, aluminum dihydrogen phosphate and ferromagnetic metal particles at a high speed, carrying out hot-press molding at the temperature of 1000 ℃, the high-temperature preoxidation of 10min, the temperature of 1100-1600 ℃, the molding pressure of 0.8-2 MPa and the dwell time of 1-5min to fully sinter a sample to obtain a preform, cooling to room temperature, dissolving 3 g of Co8Mn0.5Fe0.5Ox in 1 l of 75% isopropanol solution, carrying out ultrasonic treatment for 15min to obtain a precursor solution, spraying the precursor solution on the preform, and drying at 80 ℃ for 1 night.
The obtained catalytic material is used for purifying tail gas of a PTA industrial device, and the conversion rate of the Co8Mn0.5Fe0.5Ox catalyst to the tail gas at 280 ℃ reaches about 93% under the condition that the O2 gaseous space velocity is 60000 mL/(g.h).
Example 2
The difference from the embodiment 1 is that: the amount of the ferromagnetic metal particles added was 20 parts. The outer catalyst of the prepared miscellaneous salt heat storage carrier flue gas catalytic material is easy to fall off, and the catalytic efficiency with the same volume is about 60%.
Example 3
The difference from the example 1 is that the addition amount of the mixed salt is 20 parts, the overall heat preservation effect of the material is poor, the energy amount required for maintaining the temperature is increased, and the catalytic efficiency with the same volume is unchanged.
Example 4
The difference from the embodiment 1 is that: the addition amount of the mixed salt is 50 parts. The supported catalyst is a Co8Mn0.5Fe0.5Ox catalyst, and the catalytic efficiency with the same volume is 83-88%.
Example 5
The catalyst is different from the catalyst in example 1 in that the ceramic material is SiC, the supported catalyst is a Co8Mn0.5Fe0.5Ox catalyst, and the same volume catalytic efficiency is about 84%.
Comparative example 1
The difference from the embodiment 1 is that: the addition amount of the miscellaneous salt is 50 parts, the addition amount of the aluminum dihydrogen phosphate is 25 parts, and the addition amount of the magnetite is 50 parts. The obtained catalytic material has over-strong magnetism and is not easy to store and use, but the catalytic efficiency is improved by about 5 percent with the same volume.
Comparative example 2
The difference from the example 1 is that the addition amount of the ceramic material is 10 parts, the whole carrier structure is unstable, and the material is brittle. Short service life and unchanged catalytic efficiency with the same volume.
Comparative example 3
The difference from example 1 is that the amount of the ceramic material added is 40 parts. The supported catalyst Co8Mn0.5Fe0.5Ox catalyst has the same volume catalytic efficiency of 85-87 percent, but the energy consumption is overhigh.
Comparative example 4
A pyrochlore catalyst La2Zr2O7 prepared by using supported citric acid as a complexing agent has excellent catalytic performance (the use temperature needs to reach 700 ℃) in the aspect of catalytic combustion of air exhaust gas, but the catalytic efficiency is lower than 50% under the low-temperature condition of about 300 ℃.
Comparative example 5
A novel rare earth double perovskite catalytic material La2CoAlO6 is prepared by adopting a sol-gel method and citric acid as a complexing agent, the compound shows better methane catalytic combustion activity (the use temperature needs to reach 700 ℃), but the catalytic efficiency is lower than 10% under the low-temperature condition of about 300 ℃.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. A preparation method of a miscellaneous salt heat storage carrier flue gas catalytic material is characterized by comprising the following steps: the method comprises the following steps:
(1) determining the addition amount of miscellaneous salt;
(2) calcining miscellaneous salt to remove impurities;
(3) mixing the miscellaneous salt calcined in the step (2) with a ceramic material and strong magnetic metal particles, carrying out high-temperature preoxidation and hot press molding to fully sinter a sample to obtain a preform, cooling to room temperature, preparing weak magnetic metal powder into a precursor solution, spraying the precursor solution on the preform, and drying to obtain the material;
the mass ratio of the mixed salt to the ceramic material to the ferromagnetic metal particles in the step (1) is 20-50:20-30: 20-40;
the strong magnetic metal particles in the step (3) are magnetite and/or hematite; in the step (3)The weak magnetic metal powder is iron powder and La2CoAlO6、Co8Mn0.5Fe0.5Ox、Sr2FeMoO6Or La2Zr2O7At least one of;
the temperature of the high-temperature pre-oxidation step in the step (3) is 800-; the temperature of the hot-press molding step in the step (3) is 1100-; the temperature of the drying step in the step (3) is 80-100 ℃, and the time is 8-16 hours.
2. The method for preparing the mixed salt heat storage carrier flue gas catalytic material as claimed in claim 1, wherein the method comprises the following steps: the temperature rise rate of the calcination step in the step (2) is 5-20 ℃/min, the temperature is 600-1200 ℃, and the time is 4-8 hours.
3. The method for preparing the mixed salt heat storage carrier flue gas catalytic material as claimed in claim 1, wherein the method comprises the following steps: the ceramic material in the step (1) is aluminum dihydrogen phosphate, SiC powder, kaolin, albite, MgO or alpha-Al2O3At least one of (1).
4. A hetero-salt heat storage carrier flue gas catalytic material prepared by the preparation method of any one of claims 1 to 3, which is characterized in that: the recycling temperature of the flue gas catalytic material is 200-600 ℃.
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Inventor after: Ding Ye Inventor after: Su Zhilong Inventor after: Wang Senwei Inventor after: Zhao Mengting Inventor after: Jia Xiaochen Inventor after: Li Peng Inventor before: Ding Ye Inventor before: Su Zhilong Inventor before: Wang Senwei Inventor before: Zhao Mengting Inventor before: Jia Xiaochen Inventor before: Li Peng |