CN2668242Y - Special apparatus for nano particle surface design - Google Patents
Special apparatus for nano particle surface design Download PDFInfo
- Publication number
- CN2668242Y CN2668242Y CNU032572182U CN03257218U CN2668242Y CN 2668242 Y CN2668242 Y CN 2668242Y CN U032572182 U CNU032572182 U CN U032572182U CN 03257218 U CN03257218 U CN 03257218U CN 2668242 Y CN2668242 Y CN 2668242Y
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Abstract
The utility model belongs to the technical field of the powder processing equipment, relating to a special apparatus for nano particle surface design. A hot air inlet is arranged on the upper wall of a catalyst case (3), and a hot air distributor (6) is arranged on the upper part in the catalyst case. An atomizing nozzle (8) is fixed on the lower part in the catalyst case and communicated with a feeing peristaltic pump (7) through pipelines. A material outlet is arranged on the bottom of the catalyst case and communicated with the feeding inlet of a cyclone separator (9) through a pipeline. A top atomizer (2) is fixed below the hot air distributor in the catalyst case and communicated with the discharging outlet of a feeding machine (1) through pipelines. The air inlet of a hot air heater (5) is communicated with the air outlet of a hot air fan (4) through pipelines, and the air outlet of the hot air heater is communicated with the hot air inlet on the upper part of the catalyst case through pipelines. The special apparatus for nano particle surface design has the advantages of easy operation, good quality, low labor intensity, few use level of the modifier, no dust and low cost.
Description
Technical field
The utility model relates to a kind of isolated plant of powder spray-drying surface design.Belong to the powder technical field of processing equipment, be applicable to surface design, the spray drying technology of multiple powder.
Background technology
It is powder-modified mostly to adopt chemical industry equipment commonly used such as high-speed mixer, grinder etc. to carry out before the utility model, the production cost height, and the reaction time is long, and powder granule coats inhomogeneous, and particle agglomeration is serious, and operation is comparatively complicated.The method of carrying out modified-reaction in liquid phase is also arranged, but make production cost higher because solvent is taken away the modifier of a large amount of costlinesses, and powder need further grinding to sieve and just can obtain final products in the liquid phase if caking is serious after common drying, this makes production process longer, the product quality instability.In addition, modification of powder before this and drying often are regarded as two separate operations, and the operation cycle is long, and productivity ratio is not high.
Summary of the invention
The purpose of this utility model is to provide a kind of finish simultaneously drying and modification, and under the prerequisite of using a small amount of modifier, obtain the isolated plant that is used for the nanoparticle surface design of modified effect preferably, basic principle is that powder is contacted with the atomized drop of modification medium after dispersion, finishes the volatilization of drying, modification and solvent under the suitable condition that hot blast provides simultaneously.
The purpose of this utility model is achieved in that
The technical solution of the utility model is as follows: this nanoparticle surface design specialized device is at the bottom of the metal matter except that cloth bag gatherer and indivedual connection flexible pipe.
Device of the present utility model is formed and is comprised feed appliance 1, top atomizer 2, reactor 3, air-heater 4, storage heater 5, hot air distributor 6, charging peristaltic pump 7, atomizer 8, cyclone separator 9, cloth bag gatherer 10, product storehouse 11, hot air flow control valve 12, hot-wind inlet thermocouple 13, hot-blast outlet thermocouple 14;
One reactor 3 has the hot blast import on the top wall of reactor 3, a hot air distributor 6 is positioned at the top of reactor 3 the insides, and below reactor 3 hot blast imports; Bottom in reactor 3 the insides is fixed with atomizer 8, and atomizer 8 is communicated with charging peristaltic pump 7 by a pipeline that stretches to reactor 3 outsides; In reactor 3 bottoms one material outlet is arranged, a pipeline is communicated with the charging aperture of this material outlet with cyclone separator 9;
One is fixed on reactor 3 the insides and the top atomizer 2 below hot air distributor 6, the pipeline connection that this top atomizer 2 and one stretches to reactor 3 outsides and is communicated with the discharging opening of feed appliance 1;
The air inlet of one storage heater 5 is communicated with by pipeline with the air outlet of air-heater 4, and the air outlet of storage heater 5 is communicated with by the hot blast import of pipeline with reactor 3 tops;
One product storehouse 11 is connected in the bottom discharging opening of cyclone separator 9, and cloth bag gatherer 10 is connected in the top exit of cyclone separator 9.
Described working gas is connected in top atomizer (2) by pipeline, and another road working gas is connected in atomizer (8) by pipeline.
Top of the present utility model atomizer 2 will be sent in the reactor 3 after will disperseing from the slurries of feed appliance 1 or dry powder spraying, the hot blast of sending here with air-heater 4 one motion from top to bottom in the reactor 3 that coexists, and contact with the modification medium counter flow that enters reactor 3 via atomizer 8, after surface interaction process and Technology for Heating Processing, enter the product gathering system, finally obtain the surface-treated finished product in reactor 3 bottoms.
Situation for powder feed: feed appliance 1 is a powder fluidizer, and promptly with powder fluidisation in the container, the powder after the fluidisation is sent into top atomizer 2 by working gas to working gas through the porous media of container bottom.
Situation for slurry feed: feed appliance 1 is a fluid conveying device, and the slurries that are dispersed with powder are transported to top atomizer 2.
Situation for powder feed: hot blast is entered by reactor 3 tops, flows downward behind hot air distributor 6, and powder heating, the drying that the medium that is modified is wetting also finishes modified-reaction, carries powder from the bottom and leaves reactor, enters the product gathering system.
Situation for slurry feed: hot blast is entered by reactor 3 tops, behind hot air distributor 6, flow downward, to be atomized the slurries droplet drying that device disperses earlier, after dry gained powder and modification medium mix further to its heating, modified-reaction is finished, carry powder from the bottom and leave reactor, enter the product gathering system.
On the pipeline between the air inlet of the air outlet of air-heater 4 and storage heater 5, hot air flow control valve 12 is installed, changing this valve opening and hot blast inlet temperature can regulate in the temperature in reactor 3 exits hot air flow and hot blast, thereby reaction is controlled to powder surface modification.
Hot blast had both volatilized in modified-reaction and had been used for soluble modified dose solution, and provided suitable temperature to modified-reaction.The modification medium enters the atomizer 8 of reactor bottom through charging peristaltic pump 7, after its atomizing, enter from bottom to top in the reactor with the form of droplet and with top-down full and uniform mixing of material mist wherein; The air pressure of the atomizer 8 of bottom is adjustable, thereby realizes the adjusting to the spray height of this nozzle, can satisfy and handle powder and handle these two kinds of different operating modes of powder slurries.
The concrete working method of isolated plant that is used for the nanoparticle surface design of the present utility model is:
1). when being used to handle powder, feed appliance is a powder fluidisation conveying device, powder material is carried by working gas after the feed appliance fluidisation and enters the top atomizer, this is a pneumatic type nozzle, its center flow channels is carried powder, its gas circuit charges into working gas and disperses to realize powder, powder after the dispersion sprays into reactor, motion downwards in wrapping up in of hot blast taken, simultaneously the atomizer of bottom will spray into after will being dissolved with the solution atomization of modifier from bottom to top, the height of spraying nearby is advisable to reach disperser below, top, and the whole reactor volume all is used to carry out modified-reaction like this, can obtain the long reaction time.Powder is after meeting with the liquid mist that is dissolved with modifier, its surface is soaked into by the latter and is taken place fully to contact with the modification medium, under the disturbance and heating of hot blast, solvent constantly volatilizees, the modification medium is adsorbed in powder surface, surface modification reaction is constantly carried out, and has finally obtained the dry powder product that the surperficial homogeneous media that is modified coats, and this product is by the reactor bottom extraction, after preliminary cyclonic separation, collect, finally enter in the product storehouse by the cloth bag gatherer.
2). when being used for handling the powder that is scattered in liquid phase, feed appliance is a fluid conveying device, and the powder slurries are conveyed into the top atomizer through feed appliance, is to enter reactor from top behind the droplet by the atomizing of this pneumatic type atomizer.Suitably regulate the pressure of bottom atomizer working gas simultaneously, the height that modification medium droplet can be arrived is low, like this, the slurries droplet has a simple drying stage when falling, (for making the more abundant inlet temperature that can suitably improve hot blast of drying in this process) is through resultant absolutely dry or half-dried powder after this stage, modification medium droplet with the ejection of bottom atomizer contacts again, along with the volatilization and the modifier of solvent constantly is adsorbed on powder surface, modified-reaction constantly carries out, and the evenly dry powder product of coating of agent finally obtains being modified.After preliminary cyclonic separation, collect equally, finally enter in the product storehouse by cloth bag.
One of outstanding feature of the present utility model is that powder spray-drying and these two operations of chemical modification are combined, its powder improves mixed effect with the method that the modification medium contacts after atomizing simultaneously more greatly, the powder clad ratio is greater than 95%, in addition, owing to mix and modifier does not run off (general modifier be difficult to volatilize under modification temperature) so can obtain modified effect preferably under the situation of using less modifier, simultaneously because bottom modification medium atomization nozzle height is adjustable and the hot blast inlet temperature is adjustable, this device can be applied to simultaneously with the powder be the operating mode of raw material and be the operating mode of raw material with slurries, and be applicable to various powders with different suitable modification temperatures, the good fluidity of product, when carrying out when organically-modified, the hydrophobic lipophile of product improves greatly.
In addition, this appliance arrangement cost is low, invests lessly, can realize continuous production, and the efficient height can obviously improve the quality of powder, and labour intensity is low, can control automatically.Controlling well under the prerequisite of charging particle diameter and composition, modifier consumption, hot-blast outlet temperature and air quantity, the quality of product is highly stable.
Description of drawings
Fig. 1 overall structure schematic diagram of the present utility model.
Reference numeral
1 feed appliance, 2 top atomizers, 3 reactors, 4 air-heaters
5 air intake heaters, 6 hot air distributors, 7 charging peristaltic pumps, 8 atomizers
9 cyclone separators, 10 cloth bag gatherers, 11 product storehouses, 12 hot air flow control valves
13 hot-wind inlet thermocouples, 14 hot-blast outlet thermocouples
The specific embodiment
Below in conjunction with Fig. 1 and most preferred embodiment, be described in further detail architectural feature of the present utility model as follows:
Embodiment 1
At first prepare a cover nanoparticle surface design specialized device according to Fig. 1, reactor 3 is of a size of Φ 350 * 1000mm (internal volume), and the insulation bed thickness is 80mm, and the cloth bag gatherer is of a size of Φ 350 * 500mm.
Selecting nano silicon is that handled powder (obtains with plasma method, particle diameter 30nm), feed appliance 1 is a powder fluidisation conveying device, nano silicon is brought top atomizer 2 into by working gas after fluidisation, its powder flow is 0.5Kg/h, the working gas of its nozzle is an air, its pressure is 0.6MPa, silica enters reactor 3 after spraying disperses, air is heated to 330 ℃ (measuring these temperature by hot-wind inlet thermocouple 13) in storage heater 5 after air-heater 4 and 12 introducings of hot air flow control valve, enter reactor 3 from top to down through hot air distributor 6 then, the silica material mist that hot blast carries from top atomizer 2 moves downward, simultaneously send into the modification medium by charging peristaltic pump 7, the modification medium is titanate coupling agent (NDZ-101, dawn chemical plant, Nanjing) ethanolic solution, its flow is 3l/h, its mass percent concentration is 0.3%, after atomizer 8 sprayings, enter reactor 3 from bottom to top, the working gas of atomizer 8 is an air, its pressure is 0.6MPa, the jetting height of atomizer 8 is to arrive not far being advisable in atomizer below, top, the droplet of the titanate coupling agent solution that sprays into the bottom immediately of top silica material mist mixes like this, the full and uniform mixing of two strands of material mists, under the heating of hot blast, finish the volatilization of modification and modification dielectric solvent ethanol, the silicon-dioxide powdery that is finally evenly coated, after cyclone separator 9 initial gross separations, collect, finally enter in the product storehouse 11 by cloth bag gatherer 10.The reading that makes hot-blast outlet thermocouple 14 by the aperture of controlling hot air flow control valve 12 in the operating process had so not only guaranteed that modified-reaction carried out thoroughly but also can prevent that excessive temperature from making the coupling agent thermal decomposition about 110 ℃.
Embodiment 2
At first prepare a cover nanoparticle surface design specialized device according to Fig. 1, reactor 3 is of a size of Φ 350 * 1000mm (internal volume), and the insulation bed thickness is 80mm, and the cloth bag gatherer is of a size of Φ 350 * 500mm.
The silica slurry (solid content 4%) of selecting the sol-gal process gained is for handling object, and feed appliance 1 is a fluid conveying device, and its flow is 4l/h.The powder slurries enter top atomizer 2 through feed appliance 1, the latter's working gas is an air, its pressure is 0.65MPa, slurries become the slip droplet and enter in the reactor 3 after spraying, hot blast is through air-heater 4, hot air flow control valve 12 and storage heater 5 backs enter reactor 3 from top to down by hot air distributor 6, its inlet temperature is decided to be 350 ℃ (surveying this temperature with hot-wind inlet thermocouple 13), hot blast carries out preliminarily dried to the slurries droplet, and moving downward of carrying, the modification medium of being sent into by charging peristaltic pump 7 enters reactor 3 from bottom to top after atomizer 8 sprayings simultaneously, the modification medium is selected the ethanolic solution (add small amount of acetic acid in this solution earlier and finish prehydrolysis) of silane coupler KH560 (dawn chemical plant, Nanjing), the flow of modification medium is 3l/h, mass percent concentration is 0.1%, the working gas of atomizer 8 is an air, and its pressure is 0.4MPa.Different with the situation of handling powder material: the material mist of top ejection mixes at the modification medium droplet through ability and bottom ejection behind the preliminarily dried, both finish the volatilization of further drying and modification and modification dielectric solvent under the heating of hot blast then, the powder that is finally evenly coated, behind cyclone separator 9, collect, finally enter in the product storehouse 11 by cloth bag gatherer 10.The reading that makes hot-blast outlet thermocouple 14 by the aperture of controlling hot air flow control valve 12 in the operating process had so not only guaranteed that modified-reaction carried out thoroughly but also can prevent that excessive temperature from making the coupling agent thermal decomposition about 120 ℃.
Embodiment 3
At first prepare a cover nanoparticle surface design specialized device according to Fig. 1, reactor 3 is of a size of Φ 350 * 1000mm (internal volume), and the insulation bed thickness is 80mm, and the cloth bag gatherer is of a size of Φ 350 * 500mm.
Selecting nano titanium oxide is that handled powder (obtains with plasma method, particle diameter 40nm), feed appliance 1 is a powder fluidisation conveying device, titanium dioxide powder is brought top atomizer 2 into by working gas after fluidisation, its powder flow is 0.5Kg/h, the working gas of its nozzle is an air, its pressure is 0.6MPa, silica enters reactor 3 after spraying disperses, air is heated to 330 ℃ (by hot-wind inlet thermocouple measurement 13 these temperature) in storage heater 5 after air-heater 4 and 12 introducings of hot air flow control valve, enter reactor 3 from top to down through hot air distributor 6 then, the titanium dioxide material mist that hot blast carries from top atomizer 2 moves downward, simultaneously send into the modification medium by charging peristaltic pump 7, the modification medium is tetraethyl orthosilicate (TEOS), water, the mixed solution of acetate and ethanol, its flow is 3l/h, mass ratio is ethanol: TEOS: acetate: water=100: 1: 0.08: 0.3, after atomizer 8 sprayings, enter reactor 3 from bottom to top, the working gas of atomizer 8 is an air, its pressure is 0.6MPa, the jetting height of atomizer 8 is to arrive not far being advisable in atomizer below, top, the titanium dioxide material mist that enters of top mixes with the droplet of silica precursor solution immediately like this, after the full and uniform mixing of two strands of material mists, under the heating of hot blast, finish the volatilization of the inorganic modified and presoma solvent of particle surface, finally obtain the titanium dioxide powder of even coated silica, after cyclone separator 9 initial gross separations, collect, finally enter in the product storehouse 11 by cloth bag gatherer 10.The reading that aperture by control hot air flow control valve 12 in the operation makes hot-blast outlet thermocouple 14 is about 120 ℃, and can guarantee like this that presoma curing reaction and particle surface are inorganic modified all carries out thoroughly.What finally obtain is the titanium dioxide powder that is partly coated by silica, and this powder is better than pure titanium dioxide aspect photooxidation reaction.
Claims (4)
1. an isolated plant that is used for the nanoparticle surface design comprises feed appliance (1), top atomizer (2), reactor (3), air-heater (4), storage heater (5), hot air distributor (6), charging peristaltic pump (7), atomizer (8), cyclone separator (9), cloth bag gatherer (10), product storehouse (11), hot air flow control valve (12), hot-wind inlet thermocouple (13), hot-blast outlet thermocouple (14); It is characterized in that:
One reactor (3) has the hot blast import on the top wall of reactor (3), a hot air distributor (6) is positioned at the top of reactor (3) the inside, and in the below of reactor (3) hot blast import; Bottom in reactor (3) the inside is fixed with atomizer (8), and atomizer (8) is communicated with charging peristaltic pump (7) by a pipeline that stretches to reactor (3) outside; In reactor (3) bottom one material outlet is arranged, a pipeline is communicated with the charging aperture of this material outlet with cyclone separator (9);
One is fixed on reactor (3) the inside and the top atomizer (2) below hot air distributor (6), the pipeline connection that this top atomizer (2) and one stretches to reactor (3) outside and is communicated with the discharging opening of feed appliance (1);
The air inlet of one storage heater (5) is communicated with by pipeline with the air outlet of air-heater (4), and the air outlet of storage heater (5) is communicated with by the hot blast import of pipeline with reactor (3) top;
One product storehouse (11) is connected in the bottom discharging opening of cyclone separator (9), and cloth bag gatherer (10) is connected in the top exit of cyclone separator (9).
2. nanoparticle surface design specialized device according to claim 1 is characterized in that: described feed appliance (1) is a powder fluidizer or is a fluid conveying device.
3. nanoparticle surface design specialized device according to claim 1 is characterized in that: described at air-heater (4) air outlet and the pipeline between the air inlet of storage heater (5) on hot air flow control valve (12) is installed.
4. nanoparticle surface design specialized device according to claim 1 is characterized in that: described working gas is connected in top atomizer (2) by pipeline, and another road working gas is connected in atomizer (8) by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032572182U CN2668242Y (en) | 2003-05-14 | 2003-05-14 | Special apparatus for nano particle surface design |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032572182U CN2668242Y (en) | 2003-05-14 | 2003-05-14 | Special apparatus for nano particle surface design |
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| Publication Number | Publication Date |
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| CN2668242Y true CN2668242Y (en) | 2005-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU032572182U Expired - Lifetime CN2668242Y (en) | 2003-05-14 | 2003-05-14 | Special apparatus for nano particle surface design |
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| CN (1) | CN2668242Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100419361C (en) * | 2005-08-06 | 2008-09-17 | 安徽省土壤肥料总站 | Drying apparatus for tetrahydate octa sodium borate |
| CN103127897A (en) * | 2013-03-08 | 2013-06-05 | 南开大学 | Synthesizer of imidazolium ionic liquids and application thereof |
| CN105948763A (en) * | 2016-05-31 | 2016-09-21 | 佛山市东鹏陶瓷有限公司 | Spray drying tower for building ceramic and method for preparing powder particles |
| CN106083070A (en) * | 2016-05-31 | 2016-11-09 | 佛山市东鹏陶瓷有限公司 | The manufacture method of a kind of ceramic powder particle with clad and grain structure thereof |
| CN110655808A (en) * | 2018-12-21 | 2020-01-07 | 中信钛业股份有限公司 | Organic coating treatment method of titanium dioxide |
| CN110818433A (en) * | 2019-12-30 | 2020-02-21 | 安徽中创电子信息材料有限公司 | Device and method for controlling morphology of high-purity superfine electronic function powder material |
| CN111994913A (en) * | 2020-08-18 | 2020-11-27 | 黄冈师范学院 | Method for preparing fumed silica by utilizing spray pyrolysis silicon tetrafluoride gas |
| CN112774611A (en) * | 2021-01-18 | 2021-05-11 | 广西大学 | Hypergravity micro-interface mass transfer enhanced reaction-crystallization drying coupling all-in-one machine |
| CN113105759A (en) * | 2021-04-15 | 2021-07-13 | 攀枝花学院 | Surface treatment method of titanium dioxide |
-
2003
- 2003-05-14 CN CNU032572182U patent/CN2668242Y/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100419361C (en) * | 2005-08-06 | 2008-09-17 | 安徽省土壤肥料总站 | Drying apparatus for tetrahydate octa sodium borate |
| CN103127897A (en) * | 2013-03-08 | 2013-06-05 | 南开大学 | Synthesizer of imidazolium ionic liquids and application thereof |
| CN103127897B (en) * | 2013-03-08 | 2014-05-28 | 南开大学 | Synthesizer of imidazolium ionic liquids and application thereof |
| CN106083070B (en) * | 2016-05-31 | 2019-08-06 | 佛山市东鹏陶瓷有限公司 | A kind of manufacturing method of the ceramic powder particle with clad |
| CN106083070A (en) * | 2016-05-31 | 2016-11-09 | 佛山市东鹏陶瓷有限公司 | The manufacture method of a kind of ceramic powder particle with clad and grain structure thereof |
| CN105948763B (en) * | 2016-05-31 | 2019-04-23 | 佛山市东鹏陶瓷有限公司 | A method of for architectural pottery spray drying tower and prepare powder particles |
| CN105948763A (en) * | 2016-05-31 | 2016-09-21 | 佛山市东鹏陶瓷有限公司 | Spray drying tower for building ceramic and method for preparing powder particles |
| CN110655808A (en) * | 2018-12-21 | 2020-01-07 | 中信钛业股份有限公司 | Organic coating treatment method of titanium dioxide |
| CN110655808B (en) * | 2018-12-21 | 2021-10-19 | 中信钛业股份有限公司 | Organic coating treatment method of titanium dioxide |
| CN110818433A (en) * | 2019-12-30 | 2020-02-21 | 安徽中创电子信息材料有限公司 | Device and method for controlling morphology of high-purity superfine electronic function powder material |
| CN111994913A (en) * | 2020-08-18 | 2020-11-27 | 黄冈师范学院 | Method for preparing fumed silica by utilizing spray pyrolysis silicon tetrafluoride gas |
| CN111994913B (en) * | 2020-08-18 | 2023-12-01 | 黄冈师范学院 | Method for preparing fumed silica by utilizing spray pyrolysis of silicon tetrafluoride gas |
| CN112774611A (en) * | 2021-01-18 | 2021-05-11 | 广西大学 | Hypergravity micro-interface mass transfer enhanced reaction-crystallization drying coupling all-in-one machine |
| CN112774611B (en) * | 2021-01-18 | 2024-01-30 | 广西大学 | Super-gravity micro-interface mass transfer strengthening reaction-crystallization drying coupling integrated machine |
| CN113105759A (en) * | 2021-04-15 | 2021-07-13 | 攀枝花学院 | Surface treatment method of titanium dioxide |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130514 Granted publication date: 20050105 |