CN203971956U - The process units of the silica aerogel photochemical catalyst that a kind of nano-titanium oxide and rare earth solid solution are compound - Google Patents
The process units of the silica aerogel photochemical catalyst that a kind of nano-titanium oxide and rare earth solid solution are compound Download PDFInfo
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- CN203971956U CN203971956U CN201420362508.1U CN201420362508U CN203971956U CN 203971956 U CN203971956 U CN 203971956U CN 201420362508 U CN201420362508 U CN 201420362508U CN 203971956 U CN203971956 U CN 203971956U
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- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 239000006104 solid solution Substances 0.000 title claims abstract description 37
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 31
- 239000004965 Silica aerogel Substances 0.000 title claims abstract description 30
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 21
- 150000001875 compounds Chemical class 0.000 title claims abstract description 20
- 230000008569 process Effects 0.000 title claims abstract description 19
- 239000003054 catalyst Substances 0.000 title claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 38
- 238000005245 sintering Methods 0.000 claims abstract description 19
- 230000010355 oscillation Effects 0.000 claims abstract description 17
- 230000032683 aging Effects 0.000 claims abstract description 16
- 239000002131 composite material Substances 0.000 claims abstract description 16
- 239000007921 spray Substances 0.000 claims abstract description 13
- 238000004062 sedimentation Methods 0.000 claims abstract description 11
- 239000004744 fabric Substances 0.000 claims description 16
- 239000002002 slurry Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 11
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 44
- 238000002360 preparation method Methods 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000002269 spontaneous effect Effects 0.000 abstract description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical group O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 13
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
- 238000006555 catalytic reaction Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 8
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical compound [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 description 8
- -1 rare earth nitrate Chemical class 0.000 description 8
- 229910000348 titanium sulfate Inorganic materials 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000007787 solid Substances 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- LLZRNZOLAXHGLL-UHFFFAOYSA-J titanic acid Chemical compound O[Ti](O)(O)O LLZRNZOLAXHGLL-UHFFFAOYSA-J 0.000 description 6
- 235000011114 ammonium hydroxide Nutrition 0.000 description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 4
- 239000004408 titanium dioxide Substances 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000007146 photocatalysis Methods 0.000 description 3
- 230000001699 photocatalysis Effects 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 229910002012 Aerosil® Inorganic materials 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 230000000505 pernicious effect Effects 0.000 description 2
- 231100000572 poisoning Toxicity 0.000 description 2
- 230000000607 poisoning effect Effects 0.000 description 2
- 230000003389 potentiating effect Effects 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- SXSVTGQIXJXKJR-UHFFFAOYSA-N [Mg].[Ti] Chemical compound [Mg].[Ti] SXSVTGQIXJXKJR-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000003421 catalytic decomposition reaction Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 1
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- FYDKNKUEBJQCCN-UHFFFAOYSA-N lanthanum(3+);trinitrate Chemical compound [La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FYDKNKUEBJQCCN-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 239000007783 nanoporous material Substances 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- CFYGEIAZMVFFDE-UHFFFAOYSA-N neodymium(3+);trinitrate Chemical compound [Nd+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O CFYGEIAZMVFFDE-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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Abstract
The utility model discloses the process units of the compound silica aerogel photochemical catalyst of a kind of nano-titanium oxide and rare earth solid solution, it comprises prefabricated tanks, gel still, aging sedimentation device, filter-press, solid solution set composite, spray dryer and the tubular type oscillation sintering furnace being connected successively with entrance according to material outlet; According to preparation technology, designed and be applicable to industrialized process units, solved the technical problem of the easy spontaneous formation aggregate of dichloride in anatase type level titanium oxide, reduced the production cost of finished product, be easy to realize industrialization.
Description
Technical field
The utility model relates to material technology field, particularly relates to the process units of the compound silica aerogel photochemical catalyst of a kind of nano-titanium oxide and rare earth solid solution.
Background technology
Nano material is one of current international study hotspot and forward position.Owing to having the not available small-size effect of macroscopic material, surface and interface effect and quantum effect, nano material can show and the distinct character of conventional material (aspect such as optical, electrical, sound, heat, chemistry and mechanics), i.e. nano effect.Equally, for cellular solid, when porosity reaches after certain value, if hole dimension is enough little, also can show dimensional effect and the skin effect of portalling, thereby produce a series of properties that differ from conventional material.Aeroge is the boundless novel nano porous material of a kind of application prospect.Wherein the porosity of aerosil can be up to 99.8%, and bore hole size is at 1～60nm, and specific area is up to 1000m
2/ g, density can be at 3～500kg/m
3between change.Utilize the high-specific surface area of aeroge can be used as adsorbent, practice shows, aeroge adsorbent can have different shapes, size and chemical composition, the airborne pollution gas of adsorption cleaning under different environmental conditions.
Nano titanium oxide is a kind of good catalysis material, under illumination condition, titanium dioxide can make the gas pollutants such as formaldehyde, toluene, PM2.5 be converted into carbon dioxide and water, pollutant is fundamentally given to photodissociation and eliminate, and is to eliminate one of effective method of atmosphere and indoor pollutant.The problem that nanometer titanium dioxide photocatalysis material faces is mainly: 1, its crystalline phase must be the anatase titanium dioxide through high temperature sintering; 2,, because nano-scale anatase titanium dioxide specific area is very large, surface can be also very large, can spontaneous formation aggregate, and production cost is very high, and inconvenience is promoted the use of.
Application number is that 201210453899.3 utility model patent discloses a kind of decorative material for wall surface with decomposing formaldehyde function and preparation method thereof.Be that micro powder granule is bonded and fixed on decorative pattern layer specifically, micro powder granule comprises aerosil micro powder granule and nanometer titanium dioxide micropowder particle; Nanometer titanium dioxide micropowder particle with by the air of formaldehyde pollution, contacted, and contact and catalytic reaction with formaldehyde, play the effect purifying the air of a room.Its weak point is:
1, the component ratio of nano titanium oxide is little, and the effect purifying air is very limited;
2, nano titanium oxide cost is higher, and cost is high;
3, nano titanium oxide directly contacts with contaminated air, and its surface, without any safeguard measure, although can carry out catalytic reaction with formaldehyde in a short time, will soon occur " poisoning " phenomenon, thereby loses efficacy.
Utility model content
The purpose of this utility model is for the technological deficiency existing in prior art, and provide the process units of a kind of nano-titanium oxide and the compound silica aerogel photochemical catalyst of rare earth solid solution, it can make dichloride in anatase type level titanium oxide and rare earth solid solution be attached to equably the hole surface of silica aerogel, and preparing can be long-acting, the catalysis material of the gaseous contaminant such as formaldehyde, toluene in potent ground adsorption-decomposition function air.
For realizing the technical scheme that the purpose of this utility model adopts, be: the process units of the silica aerogel photochemical catalyst that a kind of nano-titanium oxide and rare earth solid solution are compound, comprises the prefabricated tanks, gel still, aging sedimentation device, filter-press, solid solution set composite, spray dryer and the tubular type oscillation sintering furnace that according to material outlet, are connected successively with entrance.
Preferably, the power source of material transferring is preferably compressed-air actuated pressure, and described prefabricated tanks gel still, aging sedimentation device, filter-press and solid solution set composite are communicated to respectively compressed air generator.
Preferably, between the material outlet of described solid solution set composite and the material inlet of described spray dryer, slurry delivery pump is installed, this is because the slurry solid content in described solid solution set composite need to be greater than %, viscosity is higher, adopts the slurry delivery pump of larger power can make slurry enter smoothly described spray dryer and spray and be dried.
Described aging sedimentation device is two aging settling tanks that are arranged in parallel.
Described solid solution set composite is two compound stills of solid solution that are arranged in parallel.
In addition, described tubular type oscillation sintering furnace is connected with the water circulation cooling tank for cooling material, and described water circulation cooling tank is connected with for collecting finished product and the cyclone separator that disperses hot blast, and described cyclone separator is connected to cloth bag separator; Described cloth bag separator is for separated and collect finished product again, and described cloth bag separator is connected with air-introduced machine, and described air-introduced machine is separated gas by described cloth bag separator and drawn and pass into the separation that circulate of described cloth bag separator.
Concrete, described tubular type oscillation sintering furnace comprises the furnace foundation frame of body of heater and horizontal positioned; The inside of described body of heater is provided with boiler tube, and described boiler tube and horizontal plane form the gradient of 5 °～8 °, and one end that described boiler tube is higher is connected with hopper; One side of described body of heater is installed vibrating motor, between the below of body of heater and described furnace foundation frame, is provided with a plurality of rubber mats.Above-mentioned tubular type oscillation sintering furnace possesses vibrating function, and material enters boiler tube after hopper enters, and material along the gradient of boiler tube evenly forward, passes through boiler tube according to the time setting.
Compared with prior art, the beneficial effects of the utility model are: according to preparation technology, designed and be applicable to industrialized process units, solved the technical problem of the easy spontaneous formation aggregate of dichloride in anatase type level titanium oxide, and titanium oxide agglomeration traits is the main cause that causes preparation cost high; The carrier of prepared catalysis material of the present utility model is combined firmly, adheres to evenly coated with active component, photocatalysis performance is good, the gaseous contaminants such as the airborne formaldehyde of adsorption-decomposition function that can be long-acting, potent, toluene, the more important thing is, the fine problem that has solved titanium oxide reunion of the utility model process units, reduce the production cost of finished product, be easy to realize industrialization.
Accompanying drawing explanation
Figure 1 shows that the schematic diagram of the utility model process units;
Figure 2 shows that the structural representation of tubular type oscillation sintering furnace.
The specific embodiment
Below in conjunction with specific embodiment, the utility model is described in further detail.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Be illustrated in figure 1 the utility model process units schematic diagram, it comprises prefabricated tanks 1, gel still 2, aging sedimentation device, filter-press 5, solid solution set composite, spray dryer 9 and the tubular type oscillation sintering furnace 10 being connected successively with entrance according to material outlet.
Preferably, the power source of material transferring is preferably compressed-air actuated pressure, and described prefabricated tanks 1 gel still 2, aging sedimentation device, filter-press 5 and solid solution set composite are communicated to respectively compressed air generator.
Preferably, between the material outlet of described solid solution set composite and the material inlet of described spray dryer, slurry delivery pump 8 is installed, this is because the slurry solid content in described solid solution set composite need to be greater than 40%, viscosity is higher, adopts the slurry delivery pump 8 of larger power can make slurry enter smoothly described spray dryer 9 and spray and be dried.
Described aging sedimentation device is two aging settling tanks 3,4 that are arranged in parallel.
Described solid solution set composite is the compound still 6,7 of two solid solution being arranged in parallel.
Described tubular type oscillation sintering furnace 10 is connected with the water circulation cooling tank 11 for cooling material, and described water circulation cooling tank 11 is connected with for collecting finished product and the cyclone separator 12 that disperses hot blast, and described cyclone separator 12 is connected to cloth bag separator 13; Described cloth bag separator 13 is for separated and collect finished product again, and described cloth bag separator is connected with air-introduced machine 14, and described air-introduced machine is separated gas by described cloth bag separator 13 and drawn and pass into the separation that circulate of described cloth bag separator 13.
Prefabricated tanks 1 is for mixing silica aerogel and ammoniacal liquor, gel still 2 is for mixing titanium sulfate and deionized water, solid solution set composite and aging sedimentation device are required consuming time longer when work, 6,7 and two aging settling tank 3,4 objects of two compound stills of two solid solution in parallel are set respectively and are to realize alternation, thereby realize serialization, produce.
As shown in Figure 2, described tubular type oscillation sintering furnace 10 comprises the furnace foundation frame 16 of body of heater 15 and horizontal positioned; The inside of described body of heater 15 is provided with boiler tube 17, and described boiler tube 17 forms the gradient of 5 °～8 ° with horizontal plane, and the higher one end of described boiler tube 17 is connected with hopper 18; One side of described body of heater 15 is installed vibrating motor 19, between the below of body of heater 15 and described furnace foundation frame 16, is provided with a plurality of rubber mats 20.Above-mentioned tubular type oscillation sintering furnace 10 possesses vibrating function, and material enters boiler tube 15 after hopper 18 enters, and material along the gradient of boiler tube 15 evenly forward, passes through boiler tube according to the time setting.
According to the process units of above-mentioned a kind of nano-titanium oxide and the compound silica aerogel photochemical catalyst of rare earth solid solution, its preparation method comprises the following steps:
(1) by silica aerogel particle through 300 mesh sieves, in prefabricated tanks 1, be soaked in 30～36h in 20 ° of ammoniacal liquor, obtain expecting A; Rare earth nitrades is dissolved in deionized water with 1:1 weight ratio, after filtration, obtains expecting B;
(2) because scaling method and the standard of titanium sulfate when purchasing had nothing in common with each other, in order to add more accurately the amount of titanium sulfate, the amount that the titanium sulfate of take is converted into titanium oxide is demarcation means; The weight ratio that is converted into titanium oxide with titanium sulfate counts 5%, required titanium sulfate and weight ratio is counted to 95% deionized water in gel still 2 and is mixed and made into solution; Solution is continued to stir and is heated to 75～90 ℃, keep constant temperature, when being controlled at 500～800 revs/min, opens speed of agitator ultrasonic vibration, the material A that at the uniform velocity added step (1) to produce in 60～90 minutes, and these steps complete in gel still 2; The amount that adds pan feeding A is the weight by silica aerogel, and the weight of silica aerogel is with titanium sulfate, to be converted into 0.36～0.5 times of weight of titanium oxide;
(3) continue to add proper ammonia by pH value for being adjusted to 8.0～9.5, then in aging settling tank (3,4), with the mixing speed of 30～80 revs/min, continue to stir, in the time of stirring, open ultrasonic vibration; React 60～90 minutes, obtain slurry C;
(4) by filter-press 5, slurry C is filtered, washed, the pH value of controlling slurry C is 7～8, makes the solid content >40% of the slurry C after filtration, washing simultaneously, then material is transferred to compound still (6, 7), add its deionized water of 2 times, add pan feeding B (the easy moisture absorption of rare earth nitrades simultaneously, can cause measuring inaccurate, so addition for accurate quantitative analysis rare earth nitrades, by rare earth nitrades in rare earth oxide), wherein, material B middle rare earth nitrate is 3～7% of titania weight in the weight of oxide, speed of agitator is controlled at 500～800 revs/min, when stirring is warming up to 75～90 ℃, dripping ammoniacal liquor adjust pH is 7～7.5, add hydrogen peroxide, the addition of hydrogen peroxide is for material B middle rare earth nitrate is in 10% of the weight of oxide, stirring reaction 30 minutes, washing, filter after during to material solid content >40%, collect and obtain slurry D,
At this moment, rare earth nitrades and ammoniacal liquor react and change rare-earth hydroxide into, and titanium sulfate reacts with ammoniacal liquor and generates titanium hydroxide; Rare-earth hydroxide is coated on the surface of titanium hydroxide, is jointly filled on the specific surface of silica aerogel, and the microcellular structure of silica aerogel the inside has been full of rare-earth hydroxide and titanium hydroxide; Through spraying after dry and high temperature sintering, rare-earth hydroxide changes rare earth oxide into, and titanium hydroxide changes titanium oxide into, and its volume-diminished arrives original 0.2～0.4 times, makes silica aerogel again form microcellular structure; The zwitterion of rare-earth hydroxide and titanium hydroxide is combined closely.
(5) will slurry D be pumped into spray dryer 9 by slurry delivery pump sprays dry, after dry, enter tubular type oscillation sintering furnace 10, heating-up temperature in tubular type oscillation sintering furnace is 450～600 ℃, make the titanium hydroxide and the rare-earth hydroxide that are coated on silica aerogel surface convert nano-scale anatase titanium oxide and rare earth oxide to, finally obtain the finished product of the compound silica aerogel photochemical catalyst of nano-titanium oxide and rare earth oxide solid solution.
In addition, described tubular type oscillation sintering furnace 10 is connected with the water circulation cooling tank 11 for cooling material, and cooled material transferring is extremely for collecting for the first time finished product and the cyclone separator 12 that disperses hot blast, and described cyclone separator 12 is connected to cloth bag separator 13; Described cloth bag separator 13 is for for the second time time separated and collect finished product, and described cloth bag separator is connected with air-introduced machine 14, and described air-introduced machine is separated gas by described cloth bag separator 13 and drawn and pass into the separation that circulate of described cloth bag separator 13.
Rare earth nitrades in above-mentioned steps (1) is lanthanum nitrate, cerous nitrate or neodymium nitrate.
In above-mentioned steps (2) or step (3), the frequency of ultrasonic vibration is 20～35KHz, and power density is 0.3～0.8W/cm
2.Mixing while adopting ultrasonic vibration to make to stir is more even, promotes the formation of nano-scale particle and does not reunite, and can make clad material coated Si aeroge equably.
In above-mentioned steps (5), the dry inlet temperature of spraying used is 200～300 ℃, 100～120 ℃ of outlet temperatures.
In above-mentioned steps (5), the vibration frequency of tubular type oscillation sintering furnace is 300～380 beats/min.
Preparation principle of the present utility model is: silica aerogel is considered to the solid of density minimum in the world, compares with traditional sorbing material, and specific area is larger, has stronger adsorption capacity, is ideal catalyst carrier.Titanium oxide is prepared into rare-earth oxidation magnesium-titanium solid solution, on the one hand, makes titanium oxide there is higher catalytic activity; On the other hand, rare earth (lanthanum, cerium or neodymium) oxide transforms nanoscale titanium oxide relatively large anatase crystal type of realizing at relatively low temperature, and wherein the titanium oxide of part anatase crystal type changes the titanium oxide of rutile-type into.Nano-titanium oxide is attached on the specific surface of silica aerogel micropore, make silica aerogel not only there is the function that absorption catches the gaseous contaminants such as formaldehyde in air, and can rely on the photocatalysis that is carried on its surperficial anatase type titanium oxide, decompose the gaseous contaminant that is adsorbed seizure; When unglazed, adsorb pernicious gas, have light time catalytic decomposition to discharge innocuous gas and the moisture content being converted; Be that silica aerogel has nano level microcellular structure, contaminated air has been carried out the screening in an early stage before contaminated air contacts with nanoscale titanium oxide, the micropore and the titanium oxide generation catalytic reaction that make the pernicious gases such as formaldehyde, toluene and nanoscale enter silica aerogel, avoided titanium oxide long term exposure that " poisoning " occurs in contaminated air and the situation that causes losing efficacy occurs; The utility model by the nano micropore structure capable of silica aerogel early stage screening function and the advantage of the catalysis of nano-scale anatase titanium oxide roll into one, realized long-actingization and potentization of this material catalysis.
The above is only preferred embodiment of the present utility model; it should be noted that; for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (7)
1. the process units of the compound silica aerogel photochemical catalyst of a nano-titanium oxide and rare earth solid solution, it is characterized in that, comprise the prefabricated tanks, gel still, aging sedimentation device, filter-press, solid solution set composite, spray dryer and the tubular type oscillation sintering furnace that according to material outlet, are connected successively with entrance.
2. the process units of the compound silica aerogel photochemical catalyst of a kind of nano-titanium oxide according to claim 1 and rare earth solid solution, is characterized in that described prefabricated tanks gel still, aging sedimentation device, filter-press and solid solution set composite are communicated to respectively compressed air generator.
3. the process units of the compound silica aerogel photochemical catalyst of a kind of nano-titanium oxide according to claim 1 and rare earth solid solution, is characterized in that, between the material outlet of described solid solution set composite and the material inlet of described spray dryer, slurry delivery pump is installed.
4. the process units of the compound silica aerogel photochemical catalyst of a kind of nano-titanium oxide according to claim 1 and 2 and rare earth solid solution, is characterized in that described aging sedimentation device is two aging settling tanks that are arranged in parallel.
5. according to the process units of a kind of nano-titanium oxide one of claim 1-3 Suo Shu and the compound silica aerogel photochemical catalyst of rare earth solid solution, it is characterized in that described solid solution set composite is two compound stills of solid solution that are arranged in parallel.
6. the process units of the compound silica aerogel photochemical catalyst of a kind of nano-titanium oxide according to claim 1 and rare earth solid solution, it is characterized in that described tubular type oscillation sintering furnace is connected with the water circulation cooling tank for cooling material, described water circulation cooling tank is connected with for collecting finished product and the cyclone separator that disperses hot blast, and described cyclone separator is connected to cloth bag separator.
7. the process units of the compound silica aerogel photochemical catalyst of a kind of nano-titanium oxide according to claim 1 and rare earth solid solution, is characterized in that described tubular type oscillation sintering furnace comprises the furnace foundation frame of body of heater and horizontal positioned; The inside of described body of heater is provided with boiler tube, and described boiler tube and horizontal plane form the gradient of 5 °～8 °, and one end that described boiler tube is higher is connected with hopper; One side of described body of heater is installed vibrating motor, between the below of body of heater and described furnace foundation frame, is provided with a plurality of rubber mats.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104138752A (en) * | 2014-07-01 | 2014-11-12 | 崔洁心 | Production device of nanometer titanium oxide and rare earth solid solution composite silica aerogel photocatalyst |
| CN107185515A (en) * | 2017-06-28 | 2017-09-22 | 郑善 | It is a kind of for photochemical catalyst of sewage disposal and preparation method thereof |
-
2014
- 2014-07-01 CN CN201420362508.1U patent/CN203971956U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104138752A (en) * | 2014-07-01 | 2014-11-12 | 崔洁心 | Production device of nanometer titanium oxide and rare earth solid solution composite silica aerogel photocatalyst |
| CN104138752B (en) * | 2014-07-01 | 2016-05-18 | 崔洁心 | The process units of the compound silica aerogel photochemical catalyst of a kind of nano-titanium oxide and rare earth solid solution |
| CN107185515A (en) * | 2017-06-28 | 2017-09-22 | 郑善 | It is a kind of for photochemical catalyst of sewage disposal and preparation method thereof |
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Effective date of registration: 20221018 Address after: 2 / F, building 8, TEDA Service Outsourcing Industrial Park, No. 19, Xinhuan West Road, Binhai New Area Economic and Technological Development Zone, Tianjin (No. 2416 entrusted by Tianjin Binhai Service Outsourcing Industry Co., Ltd.) Patentee after: TIANJIN LANGHUA TECHNOLOGY DEVELOPMENT CO.,LTD. Address before: 30-4-101, Fuyuanli, Dagang District, Tianjin, 300000 Patentee before: Cui Jiexin |
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