WO2021109729A1

WO2021109729A1 - Inorganic powder modification system

Info

Publication number: WO2021109729A1
Application number: PCT/CN2020/121845
Authority: WO
Inventors: 吴斌; 景录如; 张春琪; 崔艺华; 马俊锋; 徐晓风; 张超
Original assignee: 苏州太湖电工新材料股份有限公司
Priority date: 2019-12-06
Filing date: 2020-10-19
Publication date: 2021-06-10
Also published as: CN211302832U

Abstract

An inorganic powder modification system, comprising a premixing device (A), a grinding device (B), a dispersion reactor (C), and a filtering device (D) which are communicated in sequence. The dispersion reactor (C) comprises a reactor cylinder (1), a stirring device, and an ultrasonic vibration device, the reactor cylinder (1) comprises a reactor body (11) and a reactor cover (12), and the stirring device partially penetrates through the reactor cover (12) and extends into the reactor body (11); the ultrasonic vibration device comprises an ultrasonic generator (31) arranged on the reactor cover (12), an ultrasonic transducer connected to the ultrasonic generator (31), a horn connected to the ultrasonic transducer, and an ultrasonic vibration rod (32) connected to the horn, and the ultrasonic vibration rod (32) extends into the reactor body (11).

Description

An inorganic powder modification system

This application requires the prior patent application of the State Intellectual Property Office of China with the application number of CN201922181197.4 and the filing date of 2019.12.6 as priority, and the content of the prior patent application text is fully incorporated into this patent application by reference .

Technical field

This application belongs to the field of composite material preparation, in particular to the preparation of an inorganic powder and its composite modification with organic materials, and in particular to an inorganic powder modification system.

Background technique

The mixture of polymer matrix and additives whose at least one dimension is in the nanometer category is called polymer-based nanocomposite. Generally, adding a small amount of nano-dispersed phase can significantly improve the performance of the composite material. Research on nano-reinforced polymer-based composites believes that the high specific surface area and high surface activity of the nano-dispersed phase, as well as the exotic physical and chemical properties exhibited by the nanoparticles, strengthen the relationship between the nano-dispersed phase and the polymer matrix. The presence of the phase changes the aggregate structure of the polymer matrix or affects the movement characteristics of the polymer molecules, so that the macroscopic properties of the nanocomposite can be improved.

Inorganic powders need to be ultra-refined before they are compounded with polymer materials, that is, they are ground to a smaller particle size by mechanical methods. Most ultra-fine inorganic powders are due to surface hydrophilicity, and most polymer materials are It is hydrophobic and lipophilic, causing inorganic powders to be easily agglomerated, difficult to mix, and poorly modified if they are directly added to polymer materials. Therefore, it is generally necessary to treat inorganic powders and polymers before compounding them. Surface modification of powders, especially nano-sized powders (such as nano-silica, etc.) requires surface treatment to improve its compatibility and dispersion stability with polymer materials.

At present, the ultra-fine inorganic powder and its surface modification process are carried out step by step. The first is to use a sand mill to grind to a certain degree of fineness (particle size is 0.3-5μm), and the second step is to use ultrasonic equipment. For ultrasonic dispersion treatment, the third step is to move into the reactor for surface hydrophobic modification. After the modification is completed, the micro-nano solution is solid-liquid separated and filtered to obtain the micro-nano modified powder; however, on the one hand, the above operations are more complicated , And it is a batch operation with low efficiency; on the other hand, due to the transfer of nanoparticles in the batch operation, the nanoparticles will partially reaggregate during the transfer process, which greatly affects the subsequent surface modification effect, and it is difficult to obtain a good dispersion The solution of nano-particles, therefore, it is impossible to prepare an ideal nano-composite material.

Application content

The technical problem to be solved by this application is to overcome the shortcomings of the prior art and provide a new type of inorganic powder modification system, which can combine the grinding, dispersion and surface integration of inorganic powder, and at the same time, the dispersion and modification are also reduced. It can be carried out synchronously, avoiding the incomplete modification caused by the agglomeration effect of inorganic nanoparticles, making the modified inorganic nanoparticles realize monodispersion, truly exerting the nanometer effect, and basically realizing the continuous effect with high efficiency.

In order to solve the above technical problems, the technical solution adopted by this application is as follows: an inorganic powder modification system, the modification system includes a premixing device, a grinding device, a dispersion reactor and a filtering device connected in sequence; wherein, the The dispersion reactor includes a reactor barrel and a stirring device partially arranged inside the reactor barrel. The reactor barrel includes a reactor body, is detachably connected to the reactor body, and is used to cover the reactor. The reactor cover of the reactor body, the stirring device partially penetrates the reactor cover and extends into the reactor body; the dispersion reactor also includes an ultrasonic vibration device, the ultrasonic vibration device includes a set The ultrasonic generator on the cover of the reactor, the ultrasonic transducer connected with the ultrasonic generator, the horn connected with the ultrasonic transducer, and the said horn connected with the ultrasonic transducer The ultrasonic vibrating rod extends into the body of the reactor.

According to some preferred aspects of the present application, the ultrasonic vibrating rod extends in the up and down direction.

According to some preferred aspects of the present application, the ultrasonic vibration device has at least two and is symmetrically distributed around the stirring device.

According to some specific and preferred aspects of the present application, the stirring device includes a driving part fixedly arranged on the reactor cover through a support frame, a coupling connected to the driving part in transmission, and the coupling The device is connected to a stirring shaft which passes through the cover body of the reactor and extends into the body of the reactor body, and a stirring blade arranged at the lower part of the stirring shaft.

According to some preferred aspects of the present application, the stirring blade has at least two and is sequentially arranged on the stirring shaft along the up and down direction.

According to some preferred aspects of the present application, the stirring blade has a first disc stirring blade arranged at the lower end of the stirring shaft, and a second disc stirring blade arranged above the first disc stirring blade. The first disc stirring blade is located below the ultrasonic vibrating rod, and the ultrasonic vibrating rod is located outside the second disc stirring blade.

According to some preferred aspects of the present application, the first disc-type stirring blade includes a blade body and a plurality of blades formed on the outer periphery of the blade body, and the plurality of blades have a space therebetween. The lower part of the blade body protrudes downward to form an arc-shaped part corresponding to the bottom of the reactor body.

According to some preferred aspects of the present application, the reactor barrel further includes a heat transfer jacket coated on the reactor body, an insulation layer coated on the outer wall of the heat transfer jacket, and The bottom of the device body passes through the heat transfer jacket and the discharge pipe of the insulation layer, and the heat transfer jacket has a heat exchange fluid inlet and a heat exchange fluid outlet that respectively pass through the insulation layer. The heat exchange fluid inlet is located at the lower part of the heat transfer jacket, the heat exchange fluid outlet is located at the upper part of the heat transfer jacket, and the discharge pipe is in communication with the filter device.

According to some preferred aspects of the present application, the modification system further includes a circulating pipe arranged between the premixing device and the grinding device, and the upper edge of the circulating pipe extends from one end communicating with the grinding device to A circulating pneumatic discharge valve and a laser particle size analyzer are sequentially arranged in the direction of the other end of the communication of the premixing device.

According to some preferred aspects of the present application, the grinding device and the dispersion reactor are connected through an inorganic powder feed pipe, and the inorganic powder feed pipe is provided with a feed pneumatic discharge valve, and the circulation pipe is connected to the The inorganic powder feed pipe is in communication.

According to some specific aspects of the present application, during the operation of the modification system, one of the feed pneumatic discharge valve and the circulating pneumatic discharge valve is in an open state, and the other is in a closed state.

According to some preferred aspects of the application, the modification system further includes a modifier pre-storage tank, a vacuum system connected to the modifier pre-storage tank, and the modifier pre-storage tank passes through the reactor cover The body is in communication with the reactor body.

According to some preferred aspects of the present application, the modification system further includes a reflux condensation device that communicates with the reactor body through the reactor cover, and the reflux condensation device includes a fractionation column that communicates with the reactor body. , A vertical condenser communicating with the fractionating column, a horizontal condenser communicating with the vertical condenser, an oil-water separator communicating with the horizontal condenser, and a vent communicating with the oil-water separator Tube, the vacuum system is in communication with the vent tube.

According to some specific and preferred aspects of the present application, a hand hole, a material sight glass, a thermometer socket, and a flange for fixing the ultrasonic vibration device are respectively provided on the reactor cover.

Due to the adoption of the above technical solutions, compared with the prior art, this application has the following advantages:

This application realizes the integrated grinding, dispersion and modification of inorganic powder through the pre-mixing device, grinding device, dispersing reactor and filtering device connected in sequence, and basically realizes the continuous effect with high efficiency; especially through the detachable The cooperation between the connected reactor cover and the reactor body, combined with the stirring device and the ultrasonic vibration device arranged on the reactor cover, realizes the advantages of convenient replacement and adjustment of the entire device, and combines high-speed stirring and ultrasonic dispersion. In one, the surface modification is realized while realizing the effective dispersion of inorganic nanoparticles, which not only simplifies the operation steps, but also greatly improves the dispersion and modification effect, avoiding the incomplete modification caused by the agglomeration effect of inorganic nanoparticles, making the modification The latter inorganic nanoparticles realize monodispersion and truly exert the nanometer effect.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of the inorganic powder modification system of the application;

Figure 2 is a schematic diagram of the overall structure of the dispersion reactor included in the inorganic powder modification system of the application;

Among them, A. Premixing device; B. Grinding device; C. Dispersion reactor; 1. Reactor cylinder; 11. Reactor body; 12. Reactor cover; 121. Hand hole; 122. Material sight glass; 123. Thermometer jack; 124. Flange; 13. Heat transfer jacket; 131. Heat exchange fluid inlet; 132. Heat exchange fluid outlet; 14. Insulation layer; 15. Discharge pipe; 21. Drive parts; 22. Coupling; 23. Stirring shaft; 24. The first disc stirring blade; 25. The second disc stirring blade; 31. Ultrasonic generator; 32. Ultrasonic vibrating rod; 4. Ear support; 5. Bolt screw connection; D, filter device; E, circulating pipe; F, circulating pneumatic discharge valve; G, laser particle size analyzer; H, inorganic powder feeding pipe; I, feeding pneumatic discharge valve; J, modification Sexual agent pre-storage tank; K, vacuum system; L1, fractionating column; L2, vertical condenser; L3, horizontal condenser; L4, oil-water separator; L5, vent pipe; M, heat transfer medium production device.

Detailed ways

The above solutions are further described below in conjunction with specific embodiments; it should be understood that these embodiments are used to illustrate the basic principles, main features, and advantages of the present application, and the present application is not limited by the scope of the following embodiments.

In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "a plurality of" means at least two, such as two, three, etc., unless specifically defined otherwise.

In this application, unless expressly stipulated and defined otherwise, the first feature “on” or “under” the second feature may be in direct contact with the first and second features, or the first and second features may be indirectly through an intermediary. contact. Moreover, the "above", "above" and "above" of the first feature on the second feature may mean that the first feature is directly above or diagonally above the second feature, or it simply means that the level of the first feature is higher than that of the second feature. The “below”, “below” and “below” of the second feature of the first feature may mean that the first feature is directly below or obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

The application will be further described below in conjunction with the drawings and preferred embodiments of the application.

As shown in Figure 1-2, this example provides an inorganic powder modification system. The modification system includes a premixing device A, a grinding device B, a dispersion reactor C, and a filtering device D that are connected in sequence; The premixing device A, grinding device B, dispersing reactor C and filtering device D realize the integrated grinding, dispersion and modification of inorganic powder, and basically realize the continuous effect, and the work efficiency is high.

As shown in Figure 2, the dispersion reactor C includes a reactor barrel 1, a stirring device partially arranged inside the reactor barrel 1, and the reactor barrel 1 includes a reactor body 11 that is detachably connected to the reactor body 11. And for covering the reactor cover 12 of the reactor body 11, the stirring device partially penetrates the reactor cover 12 and extends into the reactor body 11; the dispersion reactor C also includes an ultrasonic vibration device, the ultrasonic vibration device includes The ultrasonic generator 31 on the reactor cover 12, the ultrasonic transducer (not shown) connected with the ultrasonic generator 31, the horn connected with the ultrasonic transducer, and the ultrasonic vibrating rod connected with the horn 32. The ultrasonic vibrating rod 32 extends into the reactor body 11.

In this example, the upper part of the reactor body 11 and the reactor cover 12 are detachably connected through the bolt and screw connector 5.

In this example, the ultrasonic vibration device is a conventional device in the prior art. This application uses the ultrasonic vibration dispersion effect generated after the ultrasonic vibration rod 32 is inserted into the material, so that the inorganic nanoparticles are uniformly dispersed, and then combined with the common stirring device The function integrates the dispersion and surface modification of inorganic nanoparticles, and improves work efficiency and work effect. Specifically, the frequency of the ultrasonic vibration device may be 2×10 4 to 10 7 Hz, and the power may be 500-3000W.

In this example, the ultrasonic vibrating rod 32 extends in the up and down direction to facilitate the insertion of the ultrasonic vibrating rod 32 into the material. Specifically, the ultrasonic vibration device has at least two and is symmetrically distributed around the stirring device, so that all positions in the reactor body 11 can be subjected to the ultrasonic vibration dispersion effect.

In this example, the stirring device includes a driving part 21 (a conventional variable frequency speed-regulating motor can be used) fixedly arranged on the reactor cover 12 through a support frame, a coupling 22 that is connected to the driving part 21 in transmission, and a coupling 22 is a stirring shaft 23 which is connected in transmission and passes through the reactor cover 12 and extends into the reactor body 11, and a stirring blade arranged at the lower part of the stirring shaft 23.

In this example, there are at least two stirring blades, which are sequentially arranged on the stirring shaft 23 in the vertical direction. Specifically, the stirring blade has a first disc stirring blade 24 arranged at the lower end of the stirring shaft 23, a second disc stirring blade 25 arranged above the first disc stirring blade 24, and the first disc stirring blade The paddle 24 is located under the ultrasonic vibrating rod 32, and the ultrasonic vibrating rod 32 is located on the outside of the second disc-type stirring blade 25. The purpose of setting two stirring blades is to make the materials inside stir uniformly, and at the same time stir the blades and The mutual positional relationship of the ultrasonic vibrating rods 32 enables the forces of the two to interact, thereby causing internal turbulence to further improve the dispersibility of the material, that is, to further improve the dispersibility of inorganic nanoparticles for thorough modification.

In this example, the first disc stirring blade 24 includes a blade body and a plurality of blades formed on the outer periphery of the blade body. The corresponding arc-shaped parts at the bottom of the reactor body 11 can be arranged at intervals to increase the force generated by the materials in different directions during the stirring process, and the materials will further collide with each other, so that the materials are dispersed extremely well.

In this example, the reactor barrel 1 also includes a heat transfer jacket 13 (which can be passed through a cooling or heating medium) coated on the reactor body 11, and an insulation layer 14 coated on the outer wall of the heat transfer jacket 13. The heat jacket 13 has a heat exchange fluid inlet 131 and a heat exchange fluid outlet 132 respectively passing through the thermal insulation layer 14. The heat exchange fluid inlet 131 is located at the lower part of the heat transfer jacket 13, and the heat exchange fluid outlet 132 is located at the bottom of the heat transfer jacket 13 Upper part.

In this example, the reactor barrel 1 also includes a discharge pipe 15 arranged at the bottom of the reactor body 11 and respectively passing through the heat transfer jacket 13 and the heat preservation layer 14. The discharge pipe 15 is in communication with the filter device D, and the filter device D Used for solid-liquid separation, that is, to separate the modified inorganic powder from other liquids such as solvents and other substances.

In this example, the reactor cover 12 is provided with a hand hole 121, a material sight glass 122, a thermometer socket 123, and a flange 124 for fixing the ultrasonic vibration device.

In this example, the reactor barrel 1 includes a plurality of ear supports 4 arranged on the reactor body 11 and passing through the heat transfer jacket 13 and the insulation layer 14.

The combination of the detachable connection of the reactor cover 12 and the reactor body 11, combined with the stirring device and the ultrasonic vibration device provided on the reactor cover 12, achieves the advantages of convenient replacement and adjustment of the entire device. Especially by combining high-speed stirring and shearing and ultrasonic dispersion, the surface modification can be realized while realizing the effective dispersion of inorganic nanoparticles, which not only simplifies the operation steps, but also greatly improves the dispersion and modification effects, and avoids the agglomeration effect of inorganic nanoparticles. The resulting incomplete modification makes the modified inorganic nanoparticles achieve monodispersion and truly exert the nanometer effect.

In this example, the premixing device A can be a commonly used stirring reactor device in the prior art. Preferably, a structure similar to that of the dispersion reactor C of the present application is adopted, and the ultrasonic vibration device can be omitted on the basis of the dispersion reactor C.

In this example, the grinding device B may be a pin horizontal sand mill commonly used in the prior art. Specifically, it can be communicated with the premixing device A through a feed pump, and then passed into the intermediate storage tank after grinding, and the intermediate storage tank communicates with the subsequent.

Further, the modification system also includes a circulating pipe E arranged between the premixing device A and the grinding device B, that is, the two ends of the circulating pipe E are respectively connected to the premixing device A and the grinding device B, and the upper edge of the circulating pipe E is from A circulating pneumatic discharge valve F, a laser particle analyzer G, a flow meter, etc. are arranged in the direction from one end communicating with the grinding device B to the other end communicating with the premixing device A. Here, the design of the circulation pipe E can make the mixture of inorganic powder and solvent in the premixing device A be ground, and the particle size can be monitored in time. If it does not meet the requirements, the circulation pipe E can be used to make the mixed solution in the premixing device Continuously circulating grinding between A and grinding device B until the particle size requirements are met, laying the foundation for the thorough modification of the subsequent inorganic powder.

Further, in this example, the grinding device B and the dispersion reactor C are connected through an inorganic powder feed pipe H, and the inorganic powder feed pipe H is provided with a feed pneumatic discharge valve I, a circulation pipe E and the inorganic powder The feed pipe H is connected. Among them, in the work of the modification system, one of the feed pneumatic discharge valve I and the circulating pneumatic discharge valve F is in an open state, and the other is in a closed state. This setting can ensure that the inorganic material is passed into the dispersion reactor C. The particle size of the powder is within the required range.

In this example, the modification system also includes a modifier pre-storage tank J and a vacuum system K connected to the modifier pre-storage tank J. The modifier pre-storage tank J is in communication with the reactor body 11 through the reactor cover 12 . The setting of the vacuum system K can make the modifier be pressed from the storage tank to the modifier pre-storage tank J under negative pressure, reducing the use of the motor.

In this example, the modification system also includes a reflux condenser connected to the reactor body 11 through the reactor cover 12, and the reflux condenser includes a fractionating column L1 connected to the reactor body 11, and a vertical condenser connected to the fractionating column L1. L2, horizontal condenser L3 connected with vertical condenser L2, oil-water separator L4 connected with horizontal condenser L3, vent pipe L5 connected with oil-water separator L4, vacuum system K and vent pipe L5 Connected. The setting of the reflux condensing device can cause too much solvent in the modified system to affect the filtration efficiency in the later stage. Therefore, the internal solvent can be evaporated by heating the reactor body 11, and then processed and recycled through the condensing reflux device, and the vacuum system The function of K communication is to keep the oil-water separator L4 in a negative pressure state, so that the solvent can be collected smoothly.

Working process: Firstly, the inorganic powder and solvent are initially mixed in the premixing device A, and then passed into the grinding device B for grinding. During this process, the circulating pneumatic discharge valve F is in an open state, and the feed pneumatic discharge valve I is in the closed state. When the laser particle size analyzer G detects that the particle size of the inorganic powder in the system meets the requirements, adjust the circulating pneumatic discharge valve F to the closed state, and open the feed pneumatic discharge valve I to feed into the dispersion reactor C. According to the feed quantity, the modifier is added accordingly (that is, the discharge valve of the modifier pre-storage tank J is opened to feed the dispersion reactor C), and the frequency of the driving part 21 is adjusted as needed to make the inorganic powder The body is well dispersed in the dispersion reactor C and modified at the same time. After the modification is completed, it is determined whether the solvent needs to be recovered through the reflux condensing device according to the amount of internal solvent, and then the material is discharged into the filtering device to separate the modified Of inorganic particles;

Among them, for different inorganic particles, such as granular, the heat transfer medium in the heat transfer jacket 13 can be a thermal fluid, etc.; when the inorganic particles are materials such as boron nitride, mica or montmorillonite, the transfer The heat transfer medium in the heat jacket 13 is set to alternate between freezing liquid and hot fluid to achieve freezing and thawing, combined with high-speed stirring and shearing and ultrasonic dispersion, to obtain exfoliated two-dimensional nanomaterials, and then perform modification operations As well as other corresponding subsequent operations, the above-mentioned heat transfer medium can be produced by the heat transfer medium production device M. For example, the thermal fluid can be hot water, thermal oil, etc., and the refrigerant can be liquid nitrogen, and so on.

In summary, this application realizes the integrated grinding, dispersion and modification of inorganic powder through the pre-mixing device A, grinding device B, dispersing reactor C, and filtering device D that are connected in sequence, and basically realizes the continuous effect and efficiency High; especially through the cooperation of the detachably connected reactor cover 12 and the reactor body 11, combined with the stirring device and the ultrasonic vibration device provided on the reactor cover 12, to realize the convenient replacement and adjustment of the entire device At the same time, it combines high-speed stirring and shearing and ultrasonic dispersion to achieve surface modification while achieving effective dispersion of inorganic nanoparticles, which not only simplifies the operation steps, but also greatly improves the dispersion and modification effects, and avoids inorganic nanoparticles. The incomplete modification caused by the agglomeration effect makes the modified inorganic nanoparticles achieve monodispersion and truly exert the nanometer effect.

The above embodiments are only to illustrate the technical ideas and features of this application, and their purpose is to enable those familiar with this technology to understand the content of this application and implement it accordingly, and cannot limit the scope of protection of this application. Equivalent changes or modifications made to the spirit and substance shall be covered by the scope of protection of this application.

Claims

An inorganic powder modification system, characterized in that the modification system includes a premixing device, a grinding device, a dispersion reactor, and a filtering device that are connected in sequence; wherein, the dispersion reactor includes a reactor cylinder and a part A stirring device arranged inside the reactor barrel, the reactor barrel including a reactor body, a reactor cover detachably connected to the reactor body and used for covering the reactor body, The stirring device partially penetrates the reactor cover and extends into the reactor body; the dispersion reactor further includes an ultrasonic vibration device, and the ultrasonic vibration device includes an ultrasonic wave arranged on the reactor cover. A generator, an ultrasonic transducer connected to the ultrasonic generator, an horn connected to the ultrasonic transducer, and an ultrasonic vibrating rod connected to the horn, the ultrasonic vibrating rod extends into the The reactor body.
The inorganic powder modification system according to claim 1, wherein the ultrasonic vibrating rod extends in a vertical direction; and/or the ultrasonic vibrating device has at least two and is symmetrically distributed around the stirring device .
The inorganic powder modification system according to claim 1, wherein the stirring device comprises a driving part fixedly arranged on the reactor cover through a support frame, and a coupling connected to the driving part in transmission. , A stirring shaft which is connected to the coupling in transmission and passes through the reactor cover and extends into the reactor body, and a stirring blade arranged at the lower part of the stirring shaft, the stirring blade There are at least two and are sequentially arranged on the stirring shaft along the up and down direction.
The inorganic powder modification system according to claim 3, wherein the stirring blade has a first disc stirring blade arranged at the lower end of the stirring shaft, and the first disc stirring blade is arranged on the first disc stirring blade. The second disc stirring blade above the blade, the first disc stirring blade is located below the ultrasonic vibrating rod, and the ultrasonic vibrating rod is located outside the second disc stirring blade.
The inorganic powder modification system according to claim 4, wherein the first disc stirring blade comprises a blade body and a plurality of blades formed on the outer periphery of the blade body, and the plurality of blades There is an interval between the two blades, and the lower part of the blade body protrudes downward to form an arc-shaped part corresponding to the bottom of the reactor body.
The inorganic powder modification system according to claim 1, wherein the reactor barrel further comprises a heat transfer jacket coated on the reactor body, and a heat transfer jacket coated on the heat transfer jacket The heat preservation layer of the outer wall and the discharge pipe which are arranged at the bottom of the reactor body and respectively pass through the heat transfer jacket and the heat preservation layer, and the heat transfer jacket has heat exchange that respectively passes through the heat preservation layer. Fluid inlet and heat exchange fluid outlet, the heat exchange fluid inlet is located at the lower part of the heat transfer jacket, the heat exchange fluid outlet is located on the upper part of the heat transfer jacket, the discharge pipe and the filter device Connected.
The inorganic powder modification system according to claim 1, wherein the modification system further comprises a circulation pipe arranged between the premixing device and the grinding device, and the upper edge of the circulation pipe is from A circulating pneumatic discharge valve and a laser particle size analyzer are sequentially arranged from one end communicating with the grinding device to the other end communicating with the premixing device.
The inorganic powder modification system according to claim 7, wherein the grinding device and the dispersion reactor are connected through an inorganic powder feed pipe, and the inorganic powder feed pipe is provided with a feed Pneumatic discharge valve, the circulation pipe is in communication with the inorganic powder feeding pipe.
The inorganic powder modification system according to claim 1, wherein the modification system further comprises a modifier pre-storage tank, a vacuum system connected with the modifier pre-storage tank, and the modification system The agent pre-storage tank is in communication with the reactor body through the reactor cover.
The inorganic powder modification system according to claim 9, wherein the modification system further comprises a reflux condensing device communicating with the reactor body through the reactor cover, and the reflux condensing device comprises A fractionating column communicating with the reactor body, a vertical condenser communicating with the fractionating column, a horizontal condenser communicating with the vertical condenser, an oil-water separator communicating with the horizontal condenser, A vent pipe communicating with the oil-water separator, and the vacuum system is in communication with the vent pipe.