CN105582866A - Method and production line for rapidly preparing aerogel through radio frequency radiation - Google Patents
Method and production line for rapidly preparing aerogel through radio frequency radiation Download PDFInfo
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- CN105582866A CN105582866A CN201610129198.2A CN201610129198A CN105582866A CN 105582866 A CN105582866 A CN 105582866A CN 201610129198 A CN201610129198 A CN 201610129198A CN 105582866 A CN105582866 A CN 105582866A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/0091—Preparation of aerogels, e.g. xerogels
Abstract
The invention relates to method and production line for rapidly preparing aerogel through radio frequency radiation. The aerogel production line comprises a main machine for rapidly preparing the aerogel through radio frequency radiation, an original auxiliary material system, an inert gas system, a heat supply system, a recovery system and a three-waste treatment system. The main machine for rapidly preparing the aerogel through radio frequency radiation comprises a sol-gel station, an ageing station, a replacement modification station and a drying station. The main machine is provided with a radio frequency generator, a monitoring device and an automatic control device. The main machine is provided with an inner container which is through front and back, a crawler is arranged in the inner container and used for material conveying, a channel is formed in the inner container and can be communicated with or disconnected from other systems outside the main machine. Multiple forms of products such as aerogel powder, aerogel particles, aerogel felt, aerogel plates, aerogel cloth and aerogel films can be continuously produced, the extremely high production efficiency and automation degree are achieved, the aerogel industry is powerfully promoted to achieve production automation, large scale and intelligence.
Description
Technical field
The preparation method and the production line that the present invention relates to a kind of aeroge, particularly a kind of radio-frequency radiation is prepared gas fastThe method of gel and production line.
Background technology
Aeroge is a kind of novel nano-porous materials, because of have ultralow thermal conductivity factor, low-density, low-k,The peculiar performances such as low-refraction and high-specific surface area, high-insulativity, high light transmittance, at calorifics, optics, electricity, chemistry, acoustics etc.Field demonstrates the characteristic of many mysteries, is called as the magical material that changes the world.
The production technology of current aeroge mainly comprises supercritical drying production technology and constant pressure and dry production technology, althoughThrough the development of more than 10 years, production technology was updated and is perfect, and production efficiency improves constantly, no matter but domestic or foreign enterprise of stateIndustry is still step semi-automatic production substantially all, does not also have enterprise can accomplish the fully-automatic production of continous way in industry.Trace it to its cause, the one, supercritical drying needs supercritical, high pressure extraction kettle in producing, and also needs to adopt in constant pressure and dry production technologyWith drying kettle, the products such as aerogel blanket and aerogel plate cannot be carried by pipeline, kettle cover must be opened, and lift by drivingMaterial; The 2nd, workshop section's time of traditional aeroge production technology is longer, and particularly aging workshop section and modification workshop section, often reach 10Several hours and even a couple of days, this brings very large obstruction to the linking of each workshop section. Therefore, current each aeroge manufacturing enterprise is mainly logicalCross the linking of adjusting each production workshop section's number of devices combination and optimizing each workshop section and promote the efficiency that whole aeroge is produced, and thenReduce costs.
The intermittent semi-automatic mode of production, not only hinders the lifting of production efficiency, because workshop section's linking link is many, and on-the-spot behaviourDo workman many, be also unfavorable for the control of product quality, the control of cost of labor, in production process easily because of personnel's maloperation or secondThe security incident that the organic matters such as alcohol are revealed or equipment fault causes constitutes a threat to the guarantee of Field Force's life security.
For overcoming the above problems, the present invention proposes the quick production line technology of a kind of brand-new aeroge and preparation method.
Summary of the invention
A kind of radio-frequency radiation is prepared aeroge production line fast, and production line comprises that radio-frequency radiation prepares aeroge master fastMachine, supplementary material system, inert gas system, heating system, recovery system and three wastes treatment system. Described radio-frequency radiation is quickPrepare aeroge main frame, comprise sol-gel workshop section, aging workshop section, substitution workshop section and drying section, main frame rear and front endHave respectively blowing and material collecting device, on main frame, work drive motor is fire-proof motor, has radio-frequency signal generator, monitoring device on main frameAnd automaton, the inner bag connecting before and after having on main frame, has crawler belt for mass transport in inner bag, have passage on inner bag,Can connect with the supplementary material system of main frame outside, inert gas system, heating system, recovery system, three wastes treatment system orClose, capital equipment composition is described below.
(1) radio-frequency radiation is prepared aeroge main frame fast.
Described radio-frequency radiation is prepared aeroge main frame fast, comprises sol-gel workshop section, aging workshop section, substitutionWorkshop section and drying section, there are respectively blowing and material collecting device in main frame rear and front end, and on main frame, work drive motor is fire-proof motor.
(2) supplementary material system.
Described supplementary material system, for supplying with raw materials for production and auxiliary material, raw material comprises Jiao Yuan, the fiber reinforcement of aerogeOne or more in material, infrared barrier material, auxiliary material comprises water, diluent, NMF, displacer, modifier, bronsted lowry acids and bases bronsted lowryIn one or more.
(3) inert gas system.
Described inert gas system, supplies with inert gas to main frame, guarantees that oxygen concentration in main frame is lower than can in main frameThe minimum oxygen content that combustion gas combustion or blast need, inert gas comprises in nitrogen, carbon dioxide, helium, argon gas, neonOne or more.
(4) heating system.
Described heating system, is made up of heat exchanger and thermal medium, and wherein thermal medium comprises hot water, steam, conduction oil, skyIn gas, inert gas and heating wire one or more.
(5) recovery system.
Described recovery system, for reclaiming the supplementary material can be recycled and the indifferent gas of supplementary material system injection main frameSystem injects the inert gas of main frame, and way of recycling comprises condensation, evaporation, rectifying, concentrated, absorption, filters, a kind of in screeningOr several modes.
(6) three wastes treatment system.
Described three wastes treatment system is for the treatment of the waste liquid not can be recycled producing in production process, waste gas and uselessGu.
Described radio-frequency radiation is prepared aeroge main frame fast, comprises sol-gel workshop section, aging workshop section, substitutionWorkshop section and drying section, wherein aging workshop section can independently exist, also can be overlapping with sol-gel workshop section, can also with putChange modification workshop section overlapping, can also sol-gel, aging, three workshop sections of substitution are overlapping, each workshop section can be integrated in listOne equipment, also can each workshop section unit equipment that a corresponding device reconfiguration connects before and after becoming respectively.
Described radio-frequency radiation is prepared aeroge main frame fast, at sol-gel workshop section or aging workshop section or substitutionWorkshop section, need to heat time, can only adopt radio-frequency radiation heating, also can only heat by heating system, can also adopt and penetrateRadio-frequency radiation heating and heating system heating combined heated; At drying section, can only adopt radio-frequency radiation dry, also can only adoptUse inert gas heated-air drying, can also adopt radio-frequency radiation to be dried and inert gas heated-air drying combination drying.
Described radio-frequency radiation is prepared aeroge main frame fast, have radio-frequency signal generator, and radio-frequency signal generator sends radio frequencyOperating frequency is 300KHz ~ 300GHz, and radio frequency power output is 250W ~ 1000kW, and radio-frequency radiation can apply to all workshop sections,Also can only apply to part workshop section.
Described radio-frequency radiation is prepared aeroge main frame fast, has monitoring device and automaton; Monitoring deviceComprise in metal monitoring device, device for detecting temperature, oxygen concentration monitor, organic gas monitoring device and video monitoring devicesOne or more, the metal particle size range of metal monitoring device monitoring is for being greater than 0.1mm, the temperature that device for detecting temperature is monitoredScope is-50 ~ 300 DEG C, and the oxygen concentration scope of oxygen concentration monitor monitoring is 0.01% ~ 25%; Automaton comprises PLCControl system device or DCS control system device or safety interlocking, the control interface of automaton can be away from workDo on-the-spot; Radio-frequency signal generator, equipment work drive motor can by monitoring device and automaton realize long-range or on-the-spot fromMove control, safety interlocking or stop in emergency.
Described radio-frequency radiation is prepared aeroge main frame fast, and the inner bag connecting before and after having, can intercept production processMiddle moisture or acid constituents or alkaline constituents or organic component directly contact with other workpieces of main frame outside inner bag, and inner bag material isPolymer or pottery or glass, inner bag can be that an entirety can be also multistage splicing.
Described radio-frequency radiation is prepared aeroge main frame fast, has track conveying device in inner bag, this conveying deviceMaterial is polymer or pottery or glass, and conveying device can be that a whole piece can be also multistage splicing in main frame, crawler belt speedDegree is adjustable for 0.1m/min ~ 25m/min, and track conveying device can be solid, can be also mesh.
Described radio-frequency radiation is prepared aeroge main frame fast, has passage on inner bag, can with the supplementary material of main frame outsideSystem, inert gas system, heating system, recovery system, three wastes treatment system connect or close.
Described radio-frequency radiation is prepared aeroge main frame fast, radio-frequency radiation prepare fast aeroge main frame entrance andExit is provided with inert gas sealing air curtain, all has inert gas to blast passage and extracts passage out, drum in each workshop section of main frameThe air quantity that enters passage and extract passage out substantially quite and maintain main frame inside in pressure-fired.
Described recovery system, it is former auxiliary that it equals from the gas flow reclaiming in main frame inner bag that supplementary material system injects substantiallyThe summation of the gas flow that the gas flow of material evaporation and inert gas system are injected.
Described aging workshop section and sol-gel workshop section are overlapping, refer to by adjusting track conveying device in inner bagSpeed, material successively completes sol-gel and aging two technical process in this workshop section; Described aging workshop section and displacement changeProperty workshop section overlapping, refer to material carries out aging and two technical process of substitution in this workshop section simultaneously; Described colloidal sol-Gel, aging, three workshop sections of substitution are overlapping, refers in the proportioning of material and have from hydrophobic components, completes colloidal sol-solidifyingWhen adhesive process process, just synchronously complete hydrophobically modified, only needed thereafter to carry out aging technique process, without substitution technique againProcess.
Described supplementary material system, inert gas system, heating system, recovery system and three wastes treatment system except with penetrateRadio-frequency radiation is prepared fast aeroge main frame and is interconnected outside perforation, and said system also has passage to be connected with pump each other, canCarry out the related exchange of material or heat. If heating system can be supplementary material system, inert gas system, recovery system and threeUseless treatment system provides heat, and the supplementary material of processing through recovery system and inert gas revert to supplementary material system and inertia againGas system.
Described radio-frequency radiation is prepared aeroge main frame fast, has monitoring device and automaton, significantly promotesProduce the gentle security level control of Automated water.
Described radio-frequency radiation is prepared the inner bag of aeroge main frame fast, and material is polymer or pottery or glass, both risesEnter outside main frame inner bag to organic gas and acid, the alkaline constituents etc. of effectively isolating in inner bag, eliminate safe hidden trouble, improve radio frequencyThe working environment of the parts such as generator, can also allow radio-frequency signal generator send radio frequency and effectively penetrate and act on phase prepared by aerogeClose material, promote radio-frequency radiation utilization rate.
Described prepare fast aeroge main frame entrance and exit place in radio-frequency radiation inert gas sealing air curtain is set, haveHelp guarantee present device continous way automated safe production, get rid of extraneous air and material and pass in and out gas in the inner bag of main frameThe impact of atmosphere.
Radio-frequency radiation is prepared the effect of playing two aspects, the one, heat effect, the 2nd, chemical action fast to aeroge. CauseIn supplementary material prepared by aeroge, often contain moisture, ethanol diluent isopolarity molecule, at fast-changing radiofrequency fieldUnder (300KHz ~ 300GHz) effect, its polarity orientation changes the variation along with external radio frequency field, causes polar molecule oneselfRevolve exercise effect, now the field energy of radiofrequency field is converted into the heat energy in medium, temperature of charge is raise, and reach radio frequency heatingObject.
The chemical action of radio-frequency radiation is very complicated, also exists a kind ofly not caused by temperature except having fuel factorNon-thermal effect, it can change the kinetic property of reaction, reduces the activation energy of reaction, accelerates the matter and energy of storeroom and hands overChange, and then accelerate course of reaction, significantly shorten the technological reaction time. What in the present invention, radio-frequency radiation was prepared at acceleration aeroge is oldThe technical process of chemical industry section and substitution workshop section has all played significant effect.
The invention also discloses a kind of radio-frequency radiation and prepare fast the method for aeroge, in the preparation process of aeroge, enterRow radio-frequency radiation, the operating frequency of radio-frequency radiation is 300KHz ~ 300GHz, radio frequency power output is 250W ~ 1000kW, specifically systemStandby process comprises the following steps:
(1) with the pH value of acid or alkali adjusting colloidal sol, directly form gel, or form gel after infiltrating fiber;
(2) gel is carried out to radio-frequency radiation, accelerated ageing;
(3) gel is soaked in substitution agent, carries out radio-frequency radiation, accelerate substitution;
(4) gel is dried, obtains aeroge.
Described colloidal sol silica sol, phenolic aldehyde colloidal sol, alumina sol, zirconia sol, titanium oxide sol, iron oxideColloidal sol, tungsten oxide colloidal sol, vanadium oxide colloidal sol, strontium oxide strontia colloidal sol, magnesia colloidal sol, cupric oxide colloidal sol, indium oxide colloidal sol, gallium oxideColloidal sol, tin oxide sol, bismuth oxide colloidal sol, manganese oxide colloidal sol, cobalt oxide colloidal sol, nickel oxide colloidal sol, zinc oxide colloidal sol, cadmium oxideColloidal sol, chromium oxide colloidal sol, tungsten oxide colloidal sol, yittrium oxide colloidal sol, scandium oxide colloidal sol, cerium oxide sol, lanthana colloidal sol, europium oxideOne or more in colloidal sol, neodymia colloidal sol, terbium oxide colloidal sol, praseodymium oxide colloidal sol, samarium oxide colloidal sol.
Described fiber comprise terylene, polyamide fibre, spandex, acrylic fibers, aramid fiber, Fypro, pre-oxidized polyacrylonitrile fiber,Kafra fiber, cellulose fibre, carbon fiber, quartz fibre, high silica fiber, alumina silicate fibre, glass fibre, rock wool fibreDimension, mullite fiber, silicon carbide fibre, silicon nitride fiber, alumina fibre, boron nitride fiber, basalt fibre, shepardite fibreOne or more in dimension, attapulgite fiber.
Described is dry, can be to adopt inert gas heated-air drying, can also adopt radio-frequency radiation to be dried and indifferent gasBody heated-air drying combination drying.
Beneficial effect
Compared with prior art, radio-frequency radiation of the present invention is prepared aeroge production line and preparation method has following significantly excellent fastGesture.
1) production efficiency significantly promotes. Tradition supercritical drying drying process or constant pressure and dry explained hereafter aeroge often needThe tens of hours time to a couple of days, adopt the present invention can in 1 ~ 5h, complete whole production procedures.
2) can realize continuous full-automatic produces. The present invention has overcome conventional production lines can only intermittent semi-automaticization lifeA difficult problem of producing, can realize continuous full-automatic and produce, and even realize produce unmanned, will greatly promote aeroge industry rawThe automation of product level and intellectuality, realize the high-end manufacture of high-end new material.
3) be conducive to control and the production safety guarantee of product quality. Of the present invention increasingly automated, be easy to guarantee productThe uniformity of each batch of quality, greatly reduces workshop site operation personnel, avoids the danger such as personnel's maloperation, minimizing personnel and ethanolThe contact probability of danger chemicals, has greatly promoted site operation personnel's life security guarantee.
4) go for the production of variform aeroge product. Conventional production lines generally only can be used in single formThe production of product, the present invention go for aerogel powder, aerogel particle, aerogel blanket, aerogel plate, airsetting adhesive plaster andThe production of the product of the variforms such as aerogel, the degree of flexibility of the production of greatly widening and applicability are beneficial to enterprise very muchExtended products application, saving equipment investment.
5) the present invention is applicable to the production of Multiple components aerogel powder. Except traditional silica aerogel, the present invention alsoBe applicable to carbon aerogels, alumina aerogels, zirconia aerogels, titanium oxide aeroge, iron oxide aeroge, tungsten oxide airsettingGlue, vanadium oxide aeroge, strontium oxide strontia aeroge, magnesia aeroge, cupric oxide aeroge, indium oxide aeroge, gallium oxide gasGel, tin oxide aeroge, bismuth oxide aeroge, manganese oxide aeroge, cobalt oxide aeroge, nickel oxide aeroge, zinc oxideAeroge, cadmium oxide aeroge, chromium oxide aeroge, tungsten oxide aeroge, yittrium oxide aeroge, scandium oxide aeroge, oxidationCerium aeroge, lanthana aeroge, europium oxide aeroge, neodymia aeroge, terbium oxide aeroge, praseodymium oxide aeroge, oxygenChange the production of samarium aeroge.
Brief description of the drawings
Fig. 1 radio-frequency radiation is prepared the equipment composition schematic diagram of aeroge production line fast;
Fig. 2 radio-frequency radiation is prepared aeroge main frame sol-gel workshop section structural representation fast;
Fig. 3 radio-frequency radiation is prepared the aging workshop section of aeroge main frame structural representation fast;
Fig. 4 radio-frequency radiation is prepared aeroge Rehosting modification workshop section structural representation fast;
Fig. 5 radio-frequency radiation is prepared aeroge main frame drying section structural representation fast.
In figure, 1 prepares aeroge main frame fast for radio-frequency radiation, and 2 is supplementary material system, and 3 is inert gas system, and 4 areHeating system, 5 is recovery system, 6 is three wastes treatment system; 7 ~ 10 workshop sections of preparing fast aeroge main frame for radio-frequency radiation,Wherein 7 is sol-gel workshop section, and 8 is aging workshop section, and 9 is substitution workshop section, and 10 is drying section; 11 ~ 23 is radio-frequency radiationPrepare fast the each workshop section's primary structure of aeroge main frame position, wherein 11 outer case that are main frame, 12 inner bags that are main frame, 13 areThe automaton of main frame, 14 for inert gas enters the passage that blasts of main frame inner bag, 15 be main frame radio-frequency signal generator, 16For gas in main frame inner bag enters the extraction passage of recovery system and three wastes treatment system, 17 monitoring devices that are main frame, 18 areLiquid supplementary material spray equipment, 19 is the track conveying device in main frame inner bag, 20 is substitution workshop section displacer and modificationAgent enters the passage of main frame inner bag from supplementary material system, 21 enter recovery system and three for substitution workshop section substitution waste liquidThe passage of useless treatment system, 22 is drying section improves the equal wind net that hot blast distributes, and 23 is the inertia through heating system preheatingGas enters the passage that blasts of main frame inner bag.
Detailed description of the invention
Below in conjunction with accompanying drawing and by specific embodiment to radio-frequency radiation of the present invention prepare fast aeroge production line andPreparation method is further described in more detail.
As shown in Figure 1, radio-frequency radiation of the present invention is prepared aeroge production line fast, comprises that radio-frequency radiation prepares gas fastGel main frame 1, supplementary material system 2, inert gas system 3, heating system 4, recovery system 5, three wastes treatment system 6; Wherein penetrateAeroge main frame 1 is prepared in radio-frequency radiation fast, comprises sol-gel workshop section 7, aging workshop section 8, substitution workshop section 9, drying section10。
As shown in Figure 2, radio-frequency radiation is prepared aeroge main frame sol-gel workshop section 7 fast, comprises the outer case of main frame11, the inner bag 12 of main frame, the automaton 13 of main frame, what inert gas entered main frame inner bag blasts passage 14, main frameRadio-frequency signal generator 15, in main frame inner bag, gas enters the extraction passage 16 of recovery system and three wastes treatment system, the monitoring of main frameDevice 17, liquid supplementary material spray equipment 18, the track conveying device 19 in main frame inner bag.
As shown in Figure 3, radio-frequency radiation is prepared the aging workshop section 8 of aeroge main frame fast, comprises the outer case 11 of main frame, main frameInner bag 12, the automaton 13 of main frame, what inert gas entered main frame inner bag blasts passage 14, the radio frequency of main frame occursDevice 15, in main frame inner bag, gas enters the extraction passage 16 of recovery system and three wastes treatment system, the monitoring device 17 of main frame, liquidState supplementary material spray equipment 18, the track conveying device 19 in main frame inner bag.
As shown in Figure 4, radio-frequency radiation is prepared aeroge Rehosting modification workshop section 9 fast, comprises the outer case 11 of main frame,The inner bag 12 of main frame, the automaton 13 of main frame, what inert gas entered main frame inner bag blasts passage 14, the radio frequency of main frameGenerator 15, in main frame inner bag, gas enters the extraction passage 16 of recovery system and three wastes treatment system, the monitoring device of main frame17, the track conveying device 19 in main frame inner bag, displacer and modifier enter the passage 20 of main frame inner bag from supplementary material system,Substitution waste liquid enters the passage 21 of recovery system and three wastes treatment system.
As shown in Figure 5, radio-frequency radiation is prepared aeroge Rehosting drying section 10 fast, comprises the outer case of main frame11, the inner bag 12 of main frame, the automaton 13 of main frame, what inert gas entered main frame inner bag blasts passage 14, main frameRadio-frequency signal generator 15, in main frame inner bag, gas enters the extraction passage 16 of recovery system and three wastes treatment system, the monitoring of main frameDevice 17, the track conveying device 19 in main frame inner bag, the equal wind net 22 that improves hot blast distribution of drying section, heating system is pre-What the inert gas of heat entered main frame inner bag blasts passage 23.
In above-mentioned diagram, the radio-frequency signal generator 15 of automaton 13 and main frame is positioned at main frame outer case 11 and main frameBetween inner bag 12; Metal monitoring device and organic gas monitoring device in monitoring device 17 are positioned at main frame outer case 11 and main frameInner bag 12 between, device for detecting temperature, oxygen concentration monitor and video monitoring devices are positioned at main frame inner bag 12.
Liquid supplementary material spray equipment 18 in above-mentioned Fig. 2 and Fig. 3, the effect in Liang Ge workshop section is different, Fig. 2 liquidThe spray of the state supplementary material spray equipment 18 liquid colloidal sols for supplementary material system, object be to provide sol-gel Jiao Yuan (asThrough the Ludox of dilution and acid-base value adjusting), the liquid supplementary material spray equipment 18 of Fig. 3 is for the liquid humectant agent of supplementary material systemThe spray of (as ethanol or water), object is to carrying out aging gel moisturizes, avoids the excessive volatilization of wet part in gel.
Track conveying device in above-mentioned Fig. 2 ~ Fig. 5 can be solid crawler belt or mesh crawler belt, according to product situation difference,The crawler belt form of each workshop section preferably has difference. As produce the preferred solid shoe of all workshop sections crawler belt of aerogel particle and powderBand; As production aerogel blanket or aerogel plate, the preferred solid crawler belt of sol-gel workshop section 7, the solid crawler belt of aging workshop section 8 orMesh crawler belt all can, 10 preferred mesh crawler belts of substitution workshop section 9 and drying section.
According to the difference of producing aeroge product form, radio-frequency radiation prepare fast aeroge main frame 1 material inlet andExit also has corresponding blowing and material collecting device.
Below in conjunction with a production instance of aerosil felt insulation, further illustrate the present invention:
First carry out the inert gas replacement in main frame inner bag 12. Before feeding intake should be first enter main frame inner bag by inert gasPassage 14, injects main frame inner bag 12 by carbon dioxide in inert gas system 3, at the entrance and exit place of main frame 1Inner bag 12 arranges carbon dioxide sealing air curtain blocking-up extraneous air and enters inner bag, then opens gas in main frame inner bag and entersThe passage 16 of recovery system and three wastes treatment system, reclaims or three wastes processing the interior gas of main frame inner bag 12, and control blastsThe air output of the intake of passage 14 and passage 16, keeping in main frame inner bag 12 is pressure-fired, when the monitoring device in inner bag 1217 oxygen concentration monitors feedbacks oxygen concentrations lower than 2% time, start supplementary material system 2, start automaton 13 and monitoring dressPut 17, prepare production and feed intake.
In sol-gel workshop section 7, by the conveying in discharging device (unreeling machine) and the main frame inner bag 12 of main frame 1 front endDevice (tetrafluoroethene crawler belt), by importing main frame inner bag 12 of the glass mat of the 10mm thickness from supplementary material system 2In, whether thering is metallic particles by the metal monitoring device monitoring glass mat of monitoring device 17 simultaneously, monitoring is passed throughWhen glass mat is transported to main frame sol-gel workshop section 7, liquid supplementary material spray equipment 18 will be from supplementary material system 2 warpsDilution is removed impurity and is regulated waterglass silicon source Ludox (processing compound is with reference to the patent CN2014102703529) spray of pH value to existOn glass mat, regulate the spray flow of spray equipment 18 and the speed of conveying device 19, make the Ludox that sprays out firmSoak into well the glass mat of below, as normal in the organic gas concentration monitor device feedback of monitoring device 17, startup main frame 1The radio-frequency signal generator 15 of sol-gel workshop section 7 starts the temperature-detecting device of monitoring device 17 simultaneously, radio-frequency signal generator 15Operating frequency is 27.12MHz, and power is between 50 ~ 100kw, guarantees the temperature of the temperature-detecting device feedback of monitoring device 17Be 30 ~ 60 DEG C, after approximately 10 minutes, form glass mat silica plural gel, enter afterwards aging workshop section 8.
In aging workshop section 8, spray in right amount from former to glass mat silica plural gel by spray equipment 18Auxiliary material system 2 be preheating to the NMF (ethanol-water mixture that ethanol content is 80%) of 40 DEG C through heating system 4, start mainThe radio-frequency signal generator 15 of the aging workshop section 8 of machine 1 starts the temperature-detecting device of monitoring device 17 simultaneously, radio-frequency signal generator 15Operating frequency is 2450MHz, and power is between 60 ~ 100kw, guarantees that the temperature of the temperature-detecting device feedback of monitoring device 17 is45 ~ 70 DEG C, the glass mat silica plural gel surface that monitoring device 17 video monitoring devices are seen is moistening not havingThere are crackle or contraction, after approximately 25 minutes, aging completing, gel masses enters substitution workshop section 9.
In substitution workshop section 9, first the passage 20 by main frame inner bag by from supplementary material system 2 through heating system 4The displacement that is preheating to substitution agent (mixture of sulfuric acid, ethanol and HMDS composition) the importing main frame of 60 DEG C changesProperty workshop section 9, when gel masses enters substitution workshop section 9, slightly open the passage 21 of substitution workshop section 9 inner bag 12 bottoms, willSubstitution agent in inner bag 12 imports recovery system 5 and recycles, and supplements new substitution agent, displacement from passage 20 simultaneouslyMore than the height of modifier in inner bag 12 should not have glass mat silica plural gel upper surface 5mm, start main frame 1The radio-frequency signal generator 15 of substitution workshop section 9, start the temperature-detecting device of monitoring device 17 simultaneously, radio-frequency signal generator 15Operating frequency is 915MHz, and power is between 60 ~ 100kw, guarantees that the temperature of the temperature-detecting device feedback of monitoring device 17 is45 ~ 70 DEG C, the glass mat silica plural gel replaced modification in surface that monitoring device 17 video monitoring devices are seenAgent covers, and after approximately 30 minutes, substitution completes, and gel masses enters drying section 10.
At drying section 10, will be 105 DEG C of carbon dioxides blasting from main frame 1 through the temperature of heating system 4 preheatingsPassage 23 imports, and purges gel masses through equal wind net 22, starts the radio-frequency signal generator 15 of the drying section 10 of main frame 1 simultaneously,The operating frequency of radio-frequency signal generator 15 is 2450MHz, and power is between 60 ~ 150kw, guarantees the temperature detection dress of monitoring device 17The temperature of putting feedback is 70 ~ 120 DEG C, regulates the gas of drying section 10 to extract the exhausting amount of passage 16 out, makes in drying section 10Air pressure in courage 12 be pressure-fired and a little less than main frame 1 exit by the carbon dioxide sealing wind that blasts passage 14 and blastThe air pressure of curtain, extracts the gas extracted out of passage 16 out and enters recovery system 5 and recycle or enter three wastes treatment system 6 and process up to standardRear discharge, after approximately 30 minutes, has been dried, and the material collecting device (winder) exporting by main frame is treated the rolling of aerogel heat-insulating feltInspection.
In production process, the omnidistance work of monitoring device 17, once monitor the organic gas ease in the inner bag 12 of main frame 1Go out, or the interior gas temperature of inner bag exceeds standard or oxygen concentration exceeds standard or monitors metallic particles, automaton 13 will start safetyChain or stop in emergency.
Thus, can realize the quick production aerogel material of the increasingly automated level of continous way by the present invention.
Above-described embodiment is only for the inventive concept of the present invention of explaining, but not restriction to rights protection of the present invention,Any simple modification, equivalent variations and modification that every foundation technology of the present invention and method essence are done above embodiment,All still belong in the scope of technology of the present invention and method scheme.
Claims (10)
1. radio-frequency radiation is prepared an aeroge production line fast, it is characterized in that, production line comprises that radio-frequency radiation prepares gas fastGel main frame 1, supplementary material system 2, inert gas system 3, heating system 4, recovery system 5 and three wastes treatment system 6; Radio frequency spokePenetrate prepare fast on aeroge main frame 1, there is radio-frequency signal generator 15, monitoring device 17, automaton 13 and front and back connectInner bag 12, has track conveying device 19 in inner bag 12, on inner bag 12, have passage, can with supplementary material system 2, inert gas system 3,Heating system 4, recovery system 5, three wastes treatment system 6 connect or close; Capital equipment is composed as follows:
(1) radio-frequency radiation is prepared aeroge main frame 1 fast;
Described radio-frequency radiation is prepared aeroge main frame 1 fast, comprises sol-gel workshop section 7, aging workshop section 8, substitution workSection 9, drying section 10; Described radio-frequency radiation is prepared aeroge main frame 1 rear and front end fast respectively blowing and material collecting device,On main frame, work drive motor is fire-proof motor;
(2) supplementary material system 2;
Described supplementary material system 2, for supplying with raw materials for production and auxiliary material, raw material comprises Jiao Yuan, the fiber reinforcement material of aerogeOne or more in material, infrared barrier material, auxiliary material comprises in water, diluent, NMF, displacer, modifier, bronsted lowry acids and bases bronsted lowryOne or more;
(3) inert gas system 3;
Described inert gas system 3, supplies with inert gas to main frame, guarantees that oxygen concentration in main frame is lower than combustible gas in main frameThe minimum oxygen content that body burning or blast need, inert gas comprises the one in nitrogen, carbon dioxide, helium, argon gas, neonOr several;
(4) heating system 4;
Described heating system 4, is made up of heat exchanger and thermal medium, wherein thermal medium comprise hot water, steam, conduction oil, air,In inert gas and heating wire one or more;
(5) recovery system 5;
Described recovery system 5, for reclaiming the supplementary material can be recycled and the inert gas of supplementary material system injection main frameSystem is injected the inert gas of main frame, way of recycling comprises condensation, evaporation, rectifying, concentrated, absorption, filters, in screening a kind of orSeveral modes;
(6) three wastes treatment system 6;
Described three wastes treatment system 6 is for the treatment of the waste liquid not can be recycled producing in production process, waste gas and useless solid.
2. radio-frequency radiation as claimed in claim 1 is prepared aeroge main frame 1 fast, it is characterized in that, comprises sol-gel workshop section7, aging workshop section 8, substitution workshop section 9 and drying section 10, wherein aging workshop section 8 can independently exist, also can with colloidal sol-Gel workshop section 7 is overlapping, can also be overlapping with substitution workshop section 9, can also sol-gel workshop section 7, aging workshop section 8, displacement9 three workshop sections of modification workshop section are overlapping, and each workshop section can be integrated in single equipment, also can each workshop section distinguish a corresponding equipment againThe unit equipment connecting before and after being combined into.
3. radio-frequency radiation as claimed in claim 1 is prepared aeroge main frame 1 fast, it is characterized in that, in sol-gel workshop section 7Or aging workshop section 8 or substitution workshop section 9, need to heat time, can only adopt radio-frequency radiation heating, also can be only by heat supplySystem 4 heats, and can also adopt radio-frequency radiation heating to heat combined heated with heating system 4; At drying section 10, can only adoptDry by radio-frequency radiation, also can only adopt inert gas heated-air drying, can also adopt radio-frequency radiation to be dried and inert gasHeated-air drying combination drying.
4. radio-frequency radiation as claimed in claim 1 is prepared aeroge main frame 1 fast, it is characterized in that, has radio-frequency signal generator 15,The operating frequency that radio-frequency signal generator sends radio frequency is 300KHz ~ 300GHz, and radio frequency power output is 250W ~ 1000kW, and radio frequency canTo apply to all workshop sections, also can only apply to part workshop section.
5. radio-frequency radiation as claimed in claim 1 is prepared aeroge main frame 1 fast, it is characterized in that, has monitoring device 17 HesAutomaton 13; Monitoring device 17 comprises metal monitoring device, device for detecting temperature, oxygen concentration monitor, You JiqiOne or more in body monitoring device and video monitoring devices, the metal particle size range of metal monitoring device monitoring is for being greater than0.1mm, the temperature range of device for detecting temperature monitoring is-50 ~ 300 DEG C, the oxygen concentration scope of oxygen concentration monitor monitoring is0.01% ~ 25%; Automatically control and fill 13 and put and comprise PLC control system device or DCS control system device or safety interlocking, fromThe control interface of dynamic control device 13 can be away from working site; Radio-frequency signal generator 15, equipment work drive motor can be by monitoringsDevice 17 and automaton 13 are realized long-range or on-the-spot automatic control, safety interlocking or stop in emergency.
6. radio-frequency radiation as claimed in claim 1 is prepared aeroge main frame 1 fast, it is characterized in that, in connecting before and after havingCourage 12, can intercept other operate portions of main frame outside moisture in production process or acid constituents or alkaline constituents or organic component and inner bagPart directly contacts, and inner bag material is polymer or pottery or glass, and inner bag can be that an entirety can be also multistage splicing.
7. radio-frequency radiation as claimed in claim 1 is prepared aeroge main frame 1 fast, it is characterized in that, in inner bag 12, has crawler beltConveying device 19, the material of this conveying device is polymer or pottery or glass, conveying device can be a whole piece in main frameAlso can be multistage splicing, crawler belt speed be that 0.1m/min ~ 25m/min is adjustable, and track conveying device can be solid, also canTo be mesh.
8. radio-frequency radiation as claimed in claim 1 is prepared aeroge main frame 1 fast, it is characterized in that, makes fast in radio-frequency radiationThe entrance and exit place of standby aeroge main frame 1 is provided with inert gas sealing air curtain, all has inert gas in each workshop section of main frameBlast passage and extract passage out, the air quantity that blasts passage and extract passage out substantially quite and maintain main frame inside in pressure-fired.
9. a kind of radio-frequency radiation as claimed in claim 1 is prepared aeroge production line fast, it is characterized in that, radio-frequency radiation is quickPrepare on the inner bag 12 of aeroge main frame 1 and have passage, can be with the supplementary material system 2 of main frame outside, inert gas system 3, supplyHot system 4, recovery system 5, three wastes treatment system 6 connect or close.
10. radio-frequency radiation is prepared a method for aeroge fast, it is characterized in that, carries out radio frequency in the preparation process of aerogeRadiation, the operating frequency of radio-frequency radiation is 300KHz ~ 300GHz, radio frequency power output is 250W ~ 1000kW, concrete preparation processComprise the following steps:
(1) with the pH value of acid or alkali adjusting colloidal sol, directly form gel, or form gel after infiltrating fiber;
Described colloidal sol comprises silica sol, phenolic aldehyde colloidal sol, alumina sol, zirconia sol, titanium oxide sol, iron oxideColloidal sol, tungsten oxide colloidal sol, vanadium oxide colloidal sol, strontium oxide strontia colloidal sol, magnesia colloidal sol, cupric oxide colloidal sol, indium oxide colloidal sol, gallium oxideColloidal sol, tin oxide sol, bismuth oxide colloidal sol, manganese oxide colloidal sol, cobalt oxide colloidal sol, nickel oxide colloidal sol, zinc oxide colloidal sol, cadmium oxideColloidal sol, chromium oxide colloidal sol, tungsten oxide colloidal sol, yittrium oxide colloidal sol, scandium oxide colloidal sol, cerium oxide sol, lanthana colloidal sol, europium oxideOne or more in colloidal sol, neodymia colloidal sol, terbium oxide colloidal sol, praseodymium oxide colloidal sol, samarium oxide colloidal sol;
Described fiber comprises terylene, polyamide fibre, spandex, acrylic fibers, aramid fiber, Fypro, pre-oxidized polyacrylonitrile fiber, KevTow dimension, cellulose fibre, carbon fiber, quartz fibre, high silica fiber, alumina silicate fibre, glass fibre, rock wool fibers, notCome mineral wool, silicon carbide fibre, silicon nitride fiber, alumina fibre, boron nitride fiber, basalt fibre, brucite fiber, recessedOne or more in protruding excellent mineral wool;
(2) gel is carried out to radio-frequency radiation, accelerated ageing;
(3) gel is soaked in substitution agent, carries out radio-frequency radiation, accelerate substitution;
(4) gel is dried, obtains aeroge;
Described is dry, can be to adopt inert gas heated-air drying, can also adopt radio-frequency radiation to be dried and indifferent gas body heatAir-dry dry combination drying.
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| CN106430224A (en) * | 2016-09-30 | 2017-02-22 | 昆山蓝胜建材有限公司 | Microwave drying oven and method for preparing sodium silicate aerogel by utilizing microwave drying method |
| CN109289717A (en) * | 2018-09-26 | 2019-02-01 | 电子科技大学 | A kind of preparation method of zirconium dioxide/titanium dioxide composite aerogel |
| CN109475833A (en) * | 2016-05-20 | 2019-03-15 | 罗克伍尔国际公司 | It is used to prepare the device and method and aerogel composite of aerogel composite |
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| CN109794208A (en) * | 2019-03-13 | 2019-05-24 | 深圳中凝科技有限公司 | A kind of gel activation device and method |
| CN109806817A (en) * | 2019-03-13 | 2019-05-28 | 深圳中凝科技有限公司 | Integrated gel modification and drying system and method |
| CN109775713A (en) * | 2019-03-13 | 2019-05-21 | 深圳中凝科技有限公司 | A kind of aeroge preparation system with conveying device |
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