CN1424136A - Process and apparatus for dispersing and surface modifying nano and micrometer particles by aerosol process - Google Patents
Process and apparatus for dispersing and surface modifying nano and micrometer particles by aerosol process Download PDFInfo
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Abstract
An aerosol process for dispersing and surficially modifying the nano or micron particles includes such steps as dispersing said particles by the strong turbulent flow field of high-speed airlflow, atomizing the modifier, spraying it in said dispersed particle system to obtain aerosol, coating the particles at controlled temp and pressure, spraying out for lowering its temp, and collecting the modified particles.
Description
Technical field
The present invention relates to a kind of processing of material surface being carried out modification, particularly relate to and a kind ofly nanometer or micron particles material are carried out the technology and the equipment of dispersion treatment and surface modification treatment, can be widely used in the dispersion and the surface modification treatment field of various nanometers or micron particles material by aerosol processing.
Background technology
Nano-particle material has a wide range of applications in a lot of fields owing to the many special natures of himself.But because the specific area of nano-particle material is big, the surface-active height is easy to reunite after preparation, and nano-particle material is fallen flat in actual use, has restricted the development of nano-particle material.Thereby, for preventing the reunion of nano-particle material, nano-particle material is carried out dispersion treatment and surface modification treatment is very important and necessary.
At present, it is wet-process modified that the surface modifying method that is usually used in granular materials mainly contains three kinds (one): be meant that modifier carries out surface modification treatment to granular materials in solution.(2) vapor phase method modification: be meant that modifier carries out surface modification with gaseous form to granular materials.Described as patent US4671973 is in a vertical modification chamber, granular materials utilizes the self gravitation effect to move downward, the modifier of gaseous state then the abundant disperse of aperture by modification chamber wall in the modification chamber, contact with the granular materials that moves downward surface and react, finish the surface modification of particle; CN1163800A is described to be that granular materials is injected into (this modification cavity wall face is the porous material that contains modifier) in the modification chamber with aerosol state, seal the modification chamber then and, in the modification chamber, form the saturated vapor of modifier heating pressurization in the modification chamber.Leave standstill after a period of time,, in the modification chamber, form the supersaturated vapor of modifier, make the modifier of gaseous state condense upon the granular materials surface, finish the surface modification of particle by the method for decompression or cooling.(3) dry method modification: be meant that modifier carries out surface modification by means of high-speed mixing and stirring action to granular materials under dry state, described as patent US3915735 is that modifier is sprayed at granular materials surface in the high-speed mixing equipment, finishes particle surface modification after stirring certain hour; US5116886 is described to be at room temperature, at first modifier is sprayed at the surface of the particle in the high-speed mixing equipment, takes out behind the stirring certain hour; Heat high-speed mixing equipment to 120 ℃ then, more pretreated particle is joined in the high-speed mixing equipment, at high temperature carry out after-treatment, finish the surface modification of particle.ZL00202515.9 is described to be to utilize the high velocity air of two groups of air nozzles ejection will be input to particle in the modification chamber and modifier to dispel and nebulize, and the stirring action that utilizes stirring rod makes particle and modifier even contact, provide particle surface modification required temperature by heat modification chamber wall, finish the surface modification of particle.At present, the vapor phase method modification can obtain modified effect preferably, but the selection of modifier is had limitation, only limits to some special modifier (US4671973), can not realize continuous production (CN1163800A), modification is inhomogeneous, modified layer is also wayward.Dry method modification since handle easy flexibly, adapt to widely, thereby in suitability for industrialized production, mostly adopt dry method modification to handle (except the special circumstances).Existing dry surface modification treatment facility mostly adopts mechanical mixing equipment, carry out modification (US3915735, US5116886) as high-speed mixer, grinder, blending machine etc., problem such as the modified-reaction time is long, granule modified not exclusively, inhomogeneous, the granule modified layer of particle surface modification situation is wayward.And, for nano-particle material, can cause the aggregate internal particle to coat because of nanoparticle agglomerates less than modifier, do not form monodisperse system.
Summary of the invention
The objective of the invention is at the subject matter that exists in the existing modified device with not enough, according to the basic principle and the characteristics of nanometer or micron particles dispersion of materials and surface modification treatment, provide a kind of and disperse technology and equipment with surface modification treatment at nanometer or micron particles material.Its outstanding feature is: adopt hydrodynamics knowledge, utilize the strong turbulence technology, nanometer or micron particles material are broken up, and utilize atomization technique modifier atomizing or gasification back and the nanometer or the abundant blending of micron particles material system of having been broken up, make aerosol, make nanometer or micron particles material surface and modifier fully, even contact, the temperature and pressure of control aerosol colloid system reaches the effect of complete modification.Have the following advantages: with strong turbulence nanometer or micron particles material are broken up, the abundant blending of modifier breaing up under the state with atomizing or gasification makes aerosol; Under aerosol state, modifier fully contacts with nanometer or micron particles material surface, makes nanometer or micron particles material modification complete; Temperature is even in the modifying process, avoids local temperature too high; Modified product character homogeneous, stable; The modifier consumption is controlled, and the adjustable ratio of making up a prescription can realize different modification demands; Produce continuously; Whole reforming apparatus movement-less part; Widely applicable, have versatility, can be widely used in the dispersion and the surface modification treatment of various nanometers or micron particles material.
The objective of the invention is to realize by following technical proposals:
Aerosol processing nanometer of the present invention or micron particles dispersion of materials and processing technology for surface modification mainly comprise: nanometer or micron particles material are broken up in the strong turbulence field with high velocity air, spray in the nanometer or micron particles material system of having been broken up with the modifier atomizing or after gasifying by atomizer, by the fully mixed aerosol that gets, modifier is fully contacted with nanometer or micron particles material surface; The temperature and the pressure of control aerosol system behind the certain hour, come out this aerosol spray by nozzle; Adopt the method for injecting atmospheric air then, the aerosol that gushes out is cooled off rapidly, make modifier can be coated on nanometer or micron particles material surface preferably, reach the purpose that makes nanometer or micron particles dispersion of materials and surface modification; Finish collection by gatherer at last to nanometer or micron particles material.
In above-mentioned technology, high velocity air heats by heater, and gas flow temperature is adjustable continuously in 10 ℃～500 ℃ scopes.
In above-mentioned technology, the high velocity air with uniform temperature is carried nanometer or micron particles material by the airflow injection mode, nanometer or micron particles material is also had the effect of heat drying and dispersion in the process of transmission.
In above-mentioned technology, the system of breaing up of granular materials tangentially enters a circular cone container by above-mentioned band material thermal current, gas and particle are rotatablely moved to contraction section, spray in the modification chamber by suitable nozzle then, form a strong turbulence field, and make nanometer or micron particles material obtain disperseing with high shear force; Enter in the modification chamber after also can making on this strand band material impinging jet to a target, nanometer or micron particles are disperseed; Enter in the modification chamber after also can clashing into two strands of this band material jets mutually with certain angle, nanometer or micron particles are disperseed.
In above-mentioned technology, modifier is to be sprayed in the nanometer or micron particles material system of having been broken up by the atomizer atomizing or after gasifying by the gas with uniform temperature (temperature is adjustable between 10 ℃～200 ℃), makes aerosol by sufficient blending.
In above-mentioned technology, the temperature of aerosol system in the modification chamber (adjustable continuously between 10 ℃～300 ℃) is to realize by the gas temperature of regulating charging, and pressure (adjustable continuously between 0.1MP～0.2MP) is to realize by the size of regulating modification chamber outlet nozzle.
In above-mentioned technology, after aerosol is gushed out by the modification chamber, promptly inject atmospheric air (air-introduced machine by system is realized), the aerosol that gushes out is cooled off rapidly, make modifier can be coated on particle surface preferably.
In above-mentioned technology, the cooled granular materials of modification is collected by gatherer.
In above-mentioned technology, flow type calorifier, conveying hot gas duct, feed pipe, modifier pipeline, particle are broken up device, atomizer and modification chamber enclosure etc. and are all coated with insulation material.
The concrete technical application scheme of above-mentioned aerosol processing nanometer or micron particles dispersion of materials and processing technology for surface modification consists of the following components, and promptly air-flow heating system, induction system, particle are broken up system, modifier atomization system, aerosol reforming system, cooling system and gathering system.The air-flow heating system offers induction system by pipeline with high-temperature gas, and induction system is then delivered to high-temperature gas particle respectively and broken up system and modifier atomization system; Particle enters the aerosol reforming system by the system of breaing up, and modifier enters the aerosol reforming system by atomization system, and the particle of breaing up fully mixes in the aerosol reforming system and effect with the modifier of atomizing or gasification, forms aerosol; Control the temperature and the pressure of this aerosol system, realize particle surface modification; Behind the certain hour, aerosol sprays into the cooling system cooling by nozzle, finishes particle surface modification; At last, the particle that modification is good is collected the device collection.
Described air-flow heating system, mainly comprise compressor, drier, heater and temperature controller, after being meant that gas enters the drier drying by compressor, enter heater by gas pipeline again, (gas flow temperature can be regulated and be controlled by temperature controller to be heated to uniform temperature, adjustable continuously between 10 ℃～500 ℃ scopes), offer induction system by pipeline then.
Described induction system mainly comprises particle transport system and modifier induction system.
Described particle transport system mainly comprises feed system and pipeline, is meant that particle enters particle by feed system by pipeline and breaks up system.In pipeline, particle is heated by the high temperature and high speed air-flow and disperses.
The described particle system of breaing up comprises inlet duct, cone-shaped cavity and outlet nozzle.Band material high velocity air is tangentially sprayed into along the cone-shaped cavity internal face by inlet duct, and rotatablely moves to contraction section, because the conservation of angular momentum, more and more faster in the contraction section rotation, and spray into the modification chamber by outlet nozzle, and form a strong turbulence field with high shear force, particle is disperseed; The band material jet of ejection enters in the modification chamber after also can being ejected on the target, and particle is disperseed; Enter in the modification chamber after also can clashing into two strands of such band material jets mutually with certain angle, particle is disperseed.
Described modifier induction system comprises feed liquor (modifier) system and pipeline, is meant that modifier enters the modifier atomization system by the feed liquor system by pipeline under certain pressure.
Described modifier atomization system comprises inlet duct, spin chamber and outlet nozzle.Be meant that adopting high temperature gas flow (adjustable continuously between 10 ℃～200 ℃ scopes) to carry modifier rotatablely moves to contraction section, sprays into modifier atomizing or gasification in the modification chamber later by outlet nozzle in the spin chamber.
Described aerosol reforming system comprises modification chamber and outlet nozzle, is meant in the modification chamber discrete particles that will spray into and the atomizing that has sprayed into or the abundant blending of gasification modifier, makes aerosol.And (10 ℃～300 ℃ of temperature by control aerosol system, realize by regulating the feed gas temperature) and pressure (0.1MP～0.2MP, the size by the adjusting outlet nozzle realizes) control the modification coating reaction on granular materials surface and the thickness of coating modification layer.Behind the certain hour, aerosol sprays into cooling chamber by outlet nozzle.
Described cooling system mainly comprises filter, cooling chamber and air-introduced machine, be meant by air-introduced machine the atmospheric air outside the system is injected in the aerosol system in the cooling chamber by filter, aerosol is cooled off rapidly, modifier can be coated on the particle surface preferably.
Described gathering system comprises cyclone separator and filters gatherer, also can constitute separately by filtering gatherer, decides according to instructions for use.
The used equipment of aerosol processing nanometer of the present invention or micron particles dispersion of materials and processing technology for surface modification comprises that air-flow heating system, induction system, particle break up system, atomizer, aerosol modification chamber, cooling system and gathering system.
Described air-flow heating system is made up of compressor, drier, gas pipeline, heater, heater outlet, temperature sensor and temperature controller.Temperature sensor and is connected with temperature controller in heater.Compressor is given vent to anger and is entered the drier drying, enters heater by gas pipeline again, and gas is heated (temperature is adjustable continuously between 10 ℃～500 ℃ scopes) in heater, then offer induction system by heater outlet.
Described induction system is made up of particle transport system and modifier induction system.The particle transport system is made up of control valve, Pressure gauge, granular materials feed bin, star valve feeder or vibro-feeder or airflow injection feeder and conveyance conduit.The modifier induction system is made up of control valve, Pressure gauge, modifier container, gas pipeline, flow regulator and liquid-transport pipe-line.
Described particle is broken up system and is made up of inlet duct, cone-shaped cavity and outlet nozzle.Inlet duct is connected with the particle transport pipeline, tangentially enters cone-shaped cavity, and outlet nozzle is positioned at cone-shaped cavity contraction section bottom, and the semi-cone angle of cone-shaped cavity is 10 °～60 °.Band material air-flow tangentially enters cone-shaped cavity by inlet duct and rotatablely moves to contraction section, sprays in the modification chamber by multi-form nozzle, forms a strong turbulence field with high shear force, makes particle obtain disperseing; The band material jet of ejection enters in the modification chamber after also can being ejected on the target, and particle is disperseed; Also can after the bump enter two strands of band material jets in the modification chamber mutually at a certain angle, particle is disperseed.
Described atomizer is made up of admission line, input duct, spin chamber and nozzle, two kinds of structures are arranged: the concrete structure of first kind of atomizer is: admission line one termination gas pipeline, its interlude communicates with input duct, the other end tangentially enters the spin chamber, and nozzle is positioned at contraction section bottom, spin chamber.High-temperature gas fully mixes with the modifier that enters wherein by input duct in admission line, tangentially enters the spin chamber after heating mixes and rotatablely moves to contraction section, sprays into the modification chamber by suitable nozzle after with modifier atomizing or gasification; The difference of second kind of atomizer and first kind of atomizer is that second kind of atomizer increased one air-flow at spin chamber's shaft core position and dispel the modifier that rotatablely moves, the atomizing of reinforced modifier or gasification result.
Described aerosol modification chamber is made up of three cavitys (particle disperses chamber I, modifier to disperse the gentle sol-gel modified chamber III of chamber II), plurality of fixed stirring rod, Pressure gauge, temperature sensor and safety valve.Pressure gauge, temperature sensor, safety valve all are connected on the cavity III, and cavity I one end is broken up the device outlet with particle and is connected, and the other end communicates with cavity II and III; Cavity II one end is connected with the atomizer outlet, and the other end communicates with cavity I and III, and fixedly stirring rod then is fixed on cavity III internal face, to strengthen the blending of particle and modifier.Cavity I, cavity II and cavity III form an angle respectively and arranged off-centre, after fully being disperseed in cavity I, the granular materials of breaing up device ejection by particle sprays among the cavity III, modifier by atomizer atomizing or the ejection of gasification back, spray among the cavity III after in cavity II, fully disperseing, dispersed particles and the modifier that has atomized or gasified fully blending in aerosol modification chamber III, make aerosol, and rotatablely move along cavity III.The parameter of aerosol system is recorded by Pressure gauge and temperature sensor, (10 ℃～300 ℃ of temperature by regulating the aerosol system, realize by regulating the feed gas temperature) and pressure (0.1MP～0.2MP, realize by the size of regulating outlet nozzle), can control the thickness of modification coating reaction and clad.Behind the certain hour, aerosol sprays into cooling chamber by outlet nozzle.
Cavity I can directly break up device with particle and be connected, and particle is fully sprayed among the cavity IH after the dispersion in cavity I.Also can in cavity I, arrange a target, band material impinging jet is sprayed among the cavity III later to this target; Also can two strands of band material jets be sprayed among the cavity III mutually after the bump at cavity I one end.Fully dispersed particles in spraying into cavity III after, the modifier high-speed mixing with spraying into after the abundant dispersion among the cavity III makes aerosol.For strengthening the gentle flow of sol of blending intensity of aerosol modification chamber endoparticle and modifier, can also add one tangential gas flow at the meet of cavity I, II, III, also can add one axial flow at the meet of cavity I, II, III.
Described flow type calorifier, conveying hot gas duct, feed pipe, modifier pipeline, particle are broken up equipment such as device, atomizer and modification chamber enclosure and are all coated with insulation material, to improve the thermal efficiency.
Described cooling system is made up of filter, cooling chamber, conveyance conduit and air-introduced machine.Modification chamber outlet nozzle is connected with cooling chamber, aerosol sprays in the cooling chamber by outlet nozzle, inject atmospheric air by the air-introduced machine in the system by filter, the aerosol that sprays in the cooling chamber is cooled off and dispersion treatment, handle the back and enter gatherer by conveyance conduit.
Described gatherer can and filter gatherer and form by cyclone separator, also can constitute separately by filtering gatherer, and this filtration gatherer can be cloth bag, ceramic making with metal material, and all existing commodity repeat no more.
Description of drawings
Accompanying drawing 1 is aerosol processing nanometer of the present invention or micron particles dispersion of materials and processing technology for surface modification FB(flow block);
Accompanying drawing 2 is aerosol processing nanometer of the present invention or micron particles dispersion of materials and surface modification treatment equipment schematic diagram;
Accompanying drawing 3 is the aerosol modification chamber schematic diagram among the present invention;
Accompanying drawing 4 is the strong turbulence generating means schematic diagram among the present invention;
Accompanying drawing 5 is broken up system's two kinds of structural representations in addition for particle among the present invention;
Accompanying drawing 6 is two kinds of atomizer schematic diagrames among the present invention;
Further describe the present invention below in conjunction with drawings and Examples.
Number in the figure 1 is a compressor, 2 air dryers, and 3 is gas pipeline, 4 is heater, 5 is temperature sensor, and 6 is control valve, and 7 is Pressure gauge, 8 is gas pipeline, and 9 is the modifier container, and 10 is flow regulator, 11 is liquid-transport pipe-line, and 12 is control valve, and 13 is Pressure gauge, 14 is gas pipeline, and 15 is atomizer, and 16 is control valve, 17 is Pressure gauge, and 18 is gas pipeline, and 19 is the granular material feed bin, 20 is feeder, and 21 is the strong turbulence generating means, and 22 is the aerosol preparation room, 23 is aerosol modification chamber, and 24 is temperature sensor, and 25 is pressure gauge, 26 is safety valve, and 27 is filter, and 28 is cooling chamber, 29 is cyclone separator, and 30 is conveyance conduit, and 31 is gatherer, 32 is gas pipeline, and 33 is air-introduced machine, and 34 are modifier dispersion chamber II, 35 are that particle disperses chamber I, and 36 be aerosol modification chamber III, and 37 is fixing stirring rod.
The specific embodiment
A kind of aerosol processing nanometer or micron particles dispersion of materials and processing technology for surface modification process are as shown in Figure 1.Gas is pressed into drier by compressor, and enters the heater heating; High-temperature gas part after the heating is broken up device with the input of the particle in particle feed bin particle, utilizes the strong turbulence field of high velocity air that particle is broken up, and a part is with the input of the modifier in modifier container atomizer, modifier atomizing or gasification; Modifier after atomizing or the gasification carries out abundant blending with the particle of having been broken up, makes aerosol; The temperature and pressure of control aerosol system carries out surface modification treatment to particle; Behind the certain hour, aerosol is sprayed by nozzle, and the surface modification of particle is finished in the processing of lowering the temperature; Finish collection by gatherer at last to modified particles.
A kind of aerosol processing nanometer or micron particles dispersion of materials and surface modification treatment equipment are as shown in Figure 2.Gas enters heater 4 through air dryer 2 by gas pipeline 3 by compressor 1, is heated to uniform temperature (adjustable continuously between 10 ℃～500 ℃); Part high-temperature gas is pressed into atomizer 15 by gas pipeline 8 with the modifier in the modifier container 9, part high-temperature gas directly enters atomizer 15 by gas pipeline 14, mix the back with modifier and spray among the cavity II34 with the modifier atomizing or after gasifying, spray among the cavity III36 after fully disperseing by outlet nozzle; Another part high-temperature gas is by being carried by the granular materials of feeder 20 inputs in 18 pairs of granular material feed bins 19 of gas pipeline, and formation band material air-flow enters strong turbulence generating means 21 after dry and the dispersion, spray among the cavity I35 by outlet nozzle, spray among the cavity III36 after fully disperseing, mix with the modifier that fully disperses to spray into, make aerosol; Pressure (adjustable between 0.1MP～0.2MP) and temperature (adjustable between 10 ℃～300 ℃) by control aerosol modification chamber 23 realize that modification coats; Behind the certain hour, aerosol sprays in the cooling chamber 28 by outlet nozzle and cools off post processing, is collected by cyclone separator 29 and gatherer 31 by conveyance conduit at last; Isolated air enters atmosphere by air-introduced machine 33.
The described technology of embodiment also can be collected without cyclone separator 29, and the particle after the modification can directly enter gatherer 31 and collect.
The used air-flow heating system of embodiment is made up of compressor 1, air dryer 2, gas pipeline 3, infrared heater 4, temperature sensor 5 and temperature controller, come the temperature of adjustments of gas by temperature controller control heater 4, adjustable between 10 ℃～500 ℃ scopes.
The used particle transport system of embodiment is made up of control valve 16, Pressure gauge 17, granular material feed bin 19, star valve feeder 20 and conveyance conduit 18, and control feeder 20 rotating speeds can obtain different inlet amounies, are 10～1000Kg/h.
Used strong turbulence generating means 21 schematic diagrames of embodiment as shown in Figure 4, entrance axis and cone-shaped cavity axis angle are 60 °～90 °, the semi-cone angle of cone-shaped cavity is 10 °～60 °.
The used particle of embodiment is broken up system, is the band material jet that the strong turbulence generating means sprays is directly sprayed in the modification chamber, also can adopt the structure shown in Fig. 5-a, makes two strands of bands expect to spray in the modification chamber after jets clash into mutually with certain angle; Can also adopt the structure shown in Fig. 5-b, band material jet is ejected on the target spray in the modification chamber later.
The used modifier induction system of embodiment is made up of control valve 6 and 12, Pressure gauge 7 and 13, conveyance conduit 8 and 14, modifier container 9 and flow regulator 10, can obtain different modifier flows by flow regulator 10, is 1～100Kg/h.
The used atomizer of embodiment is to adopt the atomizer shown in Fig. 6-a, also can adopt the atomizer that axial flow is arranged shown in Fig. 6-b.Angle between gas pipeline axis and the spin chamber's axis is 60 °～90 °, and the semi-cone angle of spin chamber is 10 °～60 °.
Used aerosol modification chamber 22 schematic diagrames of embodiment as shown in Figure 3, the angle of cavity I and cavity II axis is 45 °～135 °, the angle of cavity I and cavity III axis is 60 °～90 °, the angle of cavity II and cavity III axis is 60 °～90 °, and cavity I and cavity II are 0%～30%D (D is the internal diameter of cavity III) for the eccentric throw of cavity III.For strengthening the gentle flow of sol of blending intensity of aerosol modification chamber III endoparticle and modifier, can add one tangential gas flow at the meet of cavity I, II, III, also can add one axial flow at the meet of cavity I, II, III.
The aerosol modification chamber 22 that embodiment is used not only can be shown in Figure 2 horizontally disposed, also can be vertically arranged.
Cyclone separator 29 that embodiment is used and gatherer 31 all are cyclone separator and the gatherers of using always, and used air-introduced machine 33 also is the high pressure positive blower of using always, is connected by pipeline between them.
Claims (10)
1. one kind is adopted aerosol processing to nanometer and micron particles dispersion of materials and surface modification technology, it is characterized in that: described technology mainly comprises: nanometer and micron particles material are broken up in the strong turbulence field with high velocity air, by atomizer modifier atomizing or gasification are sprayed in the nanometer and micron particles material system of having been broken up later, make aerosol by sufficient blending, modifier is fully contacted with the micron particles material surface with nanometer; The temperature and the pressure of control aerosol system behind the certain hour, come out this aerosol spray by nozzle; Adopt the method for injecting atmospheric air then, the aerosol that gushes out is cooled off rapidly, make modifier can be coated on nanometer and micron particles material surface preferably, reach the purpose that makes nanometer and micron particles dispersion of materials and surface modification; Finish collection by gatherer at last to nanometer and micron particles material.
2. technology according to claim 1, it is characterized in that: high velocity air is pressed into air in the gas pipeline by compressor, and carry out drying, heat treated and form, gas flow temperature is adjustable continuously in 10 ℃～500 ℃ scopes, high velocity air with uniform temperature comes transporting particulate material by the airflow injection mode, granular materials is also had the effect of heat drying and dispersion in the process of transmission.
3. technology according to claim 1, it is characterized in that: band material air-flow tangentially enters a circular cone container, and gas and particle are rotatablely moved to contraction section, sprays in the modification chamber by nozzle then, form a strong turbulence field, and make particle obtain disperseing with high shear force.
4. according to claim 1,3 described technologies, it is characterized in that: the strong turbulence band material jet of ejection enters in the modification chamber after also can being ejected on the target, and particle is disperseed; Also can enter in the modification chamber after the bump mutually at a certain angle, particle is disperseed with two strands of identical strong turbulence band material jets.
5. technology according to claim 1 is characterized in that: modifier is to utilize temperature after gas adjustable between 10 ℃～200 ℃ is by atomizer atomizing or gasification, sprays in the granular materials system of having been broken up, makes aerosol by abundant blending.
6. technology according to claim 1, it is characterized in that: the temperature of aerosol system is adjustable continuously between 10 ℃～300 ℃ in the modification chamber, realize by regulating the feed gas temperature, pressure is adjustable continuously between 0.1MP～0.2MP, is to realize by the size of regulating modification chamber outlet nozzle.
7. technology according to claim 1, it is characterized in that: after aerosol is gushed out by the modification chamber, promptly inject atmospheric air by filter, the aerosol that gushes out is cooled off rapidly, modifier can be coated on the particle surface preferably by the air-introduced machine in the system.
8. according to claim 1,2,3,4,5 described technologies, it is characterized in that: can disperse and surface modification treatment nanoscale or micron particles material, be to handle continuously and produce.
9. one kind is adopted aerosol processing that granular materials is disperseed device with surface modification treatment, it is characterized in that: comprise that air-flow heating system, induction system, particle break up system, atomizer, aerosol modification chamber, cooling system and gathering system.
10. technology according to claim 9 is characterized in that: flow type calorifier, conveying hot gas duct, feed pipe, modifier pipeline, particle are broken up device, atomizer and modification chamber enclosure and are all coated with insulation material.
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2002
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