Integrated microreactor for high-flux preparation of organic polymer microspheres

Abstract

The utility model discloses an integrated microreactor for high flux preparation of organic polymer microspheres in the technical field of microsphere preparation, which comprises a fluid conveying channel and a liquid drop generating device, the fluid conveying channel is provided with an upper chamber and a lower chamber, the upper chamber is provided with a first feeding pipe, the first feeding pipe is communicated with a plurality of first guide pipes along the circumferential direction, and the first guide pipes are communicated with a plurality of second guide pipes along the circumferential direction; temperature control pieces are arranged on the first guide pipes and are fixedly connected between the upper chamber and the lower chamber; the position of the liquid drop generating device and the position of the first feeding pipe are both located on the same vertical horizontal line, the liquid drop generating device communicates with a plurality of second guide pipes and third guide pipes, and the first guide pipes communicate with the second guide pipes and the third guide pipes; the temperature control piece is communicated with a temperature control system used for providing temperature regulation and control for the temperature control piece. The micro-sphere high-flux preparation device is simple in structure, the flow of a solvent can be increased and volatilization of the solvent can be controlled by additionally arranging the guide pipe and the temperature control piece in the fluid conveying channel, and therefore the effect of micro-sphere high-flux preparation is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of microsphere preparation, in particular to an integrated microreactor for high-throughput preparation of organic polymer microspheres. Background Art

[0002] Microspheres refer to polymer composite materials with diameters between nanometers and micrometers and spherical shapes. They have the following characteristics: small particle size and volume, large specific surface area, and can be used as sites for adsorption, chemical reactions, etc. Usually, 1g of polymer microspheres with a size of 100nm have a surface area of ​​tens to hundreds of square meters; due to the narrow size distribution and different functional groups on the surface, polymer microspheres are increasingly used in practice. The raw material industry includes petrochemicals, steel, non-ferrous metals, building materials and other industries, as well as the new material industry. Polymer microspheres are a new type of material.

[0003] Generally, the preparation of microspheres requires the configuration of dispersed phase solvent and continuous phase solvent. In an oil-water two-phase mixed system, an oil-soluble phase surrounds a phase of an aqueous solution. The surrounded aqueous solution is called the dispersed phase, and the other oil-soluble substance is called the continuous phase. The process principle of the microsphere preparation process mainly includes three processes: diffusion of substances in the solution, solvent volatilization and deposition. Among them, solvent volatilization is an important step in the preparation of microspheres. In the solution, the solvent sometimes gradually decreases by volatilization, so that the concentration of the dispersed phase body gradually increases. This solvent volatilization process can be achieved by controlling the temperature of the solution. When the solvent evaporates, the concentration of the substance in the solution will gradually exceed its solubility, causing the deposition of the substance. This deposition process is the key to the formation of organic polymer microspheres, and the microspheres are in the form of droplets or emulsions.

[0004] In the existing organic polymer microsphere preparation reaction device, on the one hand, the traditional reactor is usually limited by the precise control of the two-phase flow rate, mass transfer, etc., resulting in poor product quality. The polymer microspheres prepared by traditional methods are usually poor in monodispersity, wide in size distribution, and poor in mechanical properties, which are difficult to meet some high-precision applications; on the other hand, in the microreactor, the flow rate of the dispersed phase main solution is small, and most of them are carried out in a single reactor, which makes large-scale production difficult. At the same time, since the preparation process of organic polymer microspheres is easily affected by operating conditions, curing methods and subsequent separation methods, the monodispersity, size distribution and mechanical strength of the microsphere products are also affected, which will greatly affect the efficiency of organic polymer microsphere preparation and the quality of the product. Therefore, it is very necessary to develop a high-throughput integrated microreactor for controllable preparation of microspheres. Utility Model Content

[0005] In order to solve the problem of low efficiency in the preparation of organic polymer microspheres in the above-mentioned prior art, the purpose of the utility model is to provide an integrated microreactor for high-throughput organic polymer microspheres. By adding a temperature control unit and a flow guide tube, it is possible to increase the flow rate of the solvent and control the reaction temperature of the solvent, thereby achieving the effect of high-throughput preparation of organic polymer microspheres.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: an integrated microreactor for high-throughput preparation of organic polymer microspheres, comprising a fluid delivery channel and a droplet generating device, the fluid delivery channel having an upper chamber and a lower chamber, the upper chamber being provided with a first feed pipe, the first feed pipe being connected to a plurality of first conduits along its circumference, the first conduits being provided with temperature control units, the temperature control units being fixedly connected between the upper chamber and the lower chamber; the position of the droplet generating device and the position of the first feed pipe are both located on the same vertical horizontal line, the droplet generating device is connected to a plurality of second conduits and a third conduit, the first conduits are all connected to the second conduits and the third conduits; the temperature control unit is connected to a temperature control system for providing temperature regulation for the temperature control unit.

[0007] The principle of the basic scheme is: first, the dispersed phase fluid enters from the first feed pipe, then the dispersed phase fluid will flow through the first conduit, and then the dispersed phase fluid will flow through the temperature control unit. The operator can set a temperature suitable for the dispersed phase fluid reaction in combination with the environment through the temperature control system connected to the temperature control unit. At the same time, the continuous phase fluid is split in the droplet generation device, flows out through the second conduit, and then merges with the dispersed phase fluid in the first conduit to react, generating microsphere droplets that flow out from the third conduit.

[0008] Beneficial effects of the basic solution: 1. The design of the temperature control unit can provide a temperature suitable for the reaction of the dispersed phase fluid, thereby effectively reducing the influence of temperature on the preparation of microspheres. At the same time, a stable temperature environment can not only improve the utilization rate of the dispersed phase fluid, but also reduce the deposition of by-products, that is, extend the service life of the microreactor.

[0009] 2. The design of multiple catheters means that more solvents can be injected at the same time, which is equivalent to preparing multiple groups of microspheres at the same time, thus improving the efficiency of microsphere preparation.

[0010] Furthermore, the droplet generating device includes a second feed pipe, a collecting platform and a discharge pipe connected from top to bottom, the second feed pipe is connected to the second conduit along its circumference, the collecting platform is connected to the third conduit along its circumference, and the second conduit is connected to the third conduit.

[0011] Beneficial effects of the basic scheme: The second feed pipe, collection platform and discharge pipe connected from top to bottom in the droplet generating device can allow the continuous phase fluid to merge with the dispersed phase fluid at the same time after entering the second feed pipe, and have enough time to produce microspheres, and then form a microsphere group through the collection platform and flow out of the discharge pipe, which is also helpful for the collection of microsphere droplets.

[0012] Furthermore, the first feeding pipe is funnel-shaped.

[0013] The beneficial effect of the basic solution is that when the dispersed phase fluid enters the funnel-shaped first feed pipe, it will be split through the first feed pipe.

[0014] Furthermore, there are four first conduits, and the angle between adjacent first conduits is 90°.

[0015] The beneficial effect of the basic scheme is that the influence of factors such as flow rate and flow velocity on the solvent in the first conduit can be reduced by determining the distance between the first conduits, so that the solvent can flow evenly in the conduit, thereby achieving the effect of fully utilizing the integrated microreactor.

[0016] Furthermore, the second feeding pipe is in the shape of an inverted funnel.

[0017] The beneficial effect of the basic scheme is: the inverted funnel shape is mainly because the solvents in the first conduit and the second conduit will converge into the third conduit, and the third conduit may not be able to remove the generated microspheres in time, which may cause a pressure difference between the first conduit and the second conduit. Therefore, the second feed tube is set in an inverted funnel shape mainly to prevent back suction.

[0018] Furthermore, the collecting platform is cylindrical, and the circumference of the collecting platform is greater than the circumference of the top of the discharge pipe and the circumference of the bottom of the second feed pipe.

[0019] The beneficial effect of the basic scheme is that the size of the collecting platform is limited to facilitate the collection of the solvent overflowing from the second feed pipe. At the same time, since the reaction device is an integrated microreactor, a large number of microspheres will be generated when the reactor is working. In order to reduce the discharge pressure of the discharge pipe, a collecting platform with a larger circumference will help reduce the discharge pressure of the discharge pipe.

[0020] Furthermore, the volume of the lower chamber is larger than that of the upper chamber.

[0021] The beneficial effect of the basic solution is: because the volume of the lower chamber is larger than that of the upper chamber, the weight of the lower chamber will be greater than that of the upper chamber, so that the center of gravity of the fluid delivery channel is located in the lower chamber, which can improve the stability of the fluid delivery channel.

[0022] Furthermore, the temperature control unit is cylindrical.

[0023] The beneficial effect of the basic scheme is that the cylindrical design can make the distance from the first conduit inside the temperature control unit to the outer wall of the temperature control unit equal, so that when the temperature control system implements temperature control on the temperature control unit, the first conduit is heated evenly, so that the reaction of the solvent will also be more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an axonometric diagram of an integrated microreactor for high-throughput preparation of organic polymer microspheres in an embodiment of the present utility model.

[0025] Figure 2 This is an overall diagram of the reaction channel of an integrated microreactor for high-throughput preparation of organic polymer microspheres in an embodiment of the present utility model.

[0026] Figure 3 It is a front view of an integrated microreactor for high-throughput preparation of organic polymer microspheres in an embodiment of the utility model. DETAILED DESCRIPTION

[0027] The following is further described in detail through specific implementation methods:

[0028] The reference numerals in the drawings of the specification include: upper chamber 1, first feed pipe 2, temperature control unit 3, lower chamber 4, first conduit 5, second conduit 6, second feed pipe 7, collection platform 8, discharge pipe 9, and third conduit 10.

[0029] The embodiment is basically as shown in the attached Figure 1-Figure 3 As shown: an integrated microreactor for high-throughput preparation of organic polymer microspheres, including a fluid delivery channel and a droplet generating device, the fluid delivery channel includes an upper chamber 1 and a lower chamber 4, the upper chamber 1 is provided with a funnel-shaped first feed pipe 2, the first feed pipe 5 is connected with four first conduits 5 along its circumference, the angles between adjacent first conduits 5 are all 90°, the first conduits 5 are all connected with a temperature control unit 3, the temperature control unit 3 is cylindrical, the top and bottom ends of the temperature control unit 3 are fixedly connected to the upper chamber 1 and the lower chamber 4 respectively, the temperature control unit 3 is connected with a temperature control system for providing temperature regulation for the temperature control unit 3, and the temperature control system model is preferably a variable pressure temperature controller of model BWY-802 / 803.

[0030] The droplet generating device includes from top to bottom a second feed pipe 7, a collecting platform 8 and a discharge pipe 9, the second feed pipe 7, the collecting platform 8 and the discharge pipe 9 are all arranged in the lower chamber 4, the second feed pipe 7 is connected along its circumference with four second conduits 6 corresponding to the first conduits 5, the angles between adjacent second conduits 6 are all 90°, the collecting platform 8 is connected along its circumference with four third conduits 10 located below and corresponding to the second conduit 6, the angles between adjacent third conduits 10 are all 90°, the second conduits 6 and the third conduits 10 are connected, the end of the first conduit 5 away from the temperature control unit 3 is connected to the connection point between the second conduit 6 and the third conduit 10, the bottom of the collecting platform 8 and the discharge pipe 9 are connected by electric fusion, the second feed pipe 7 is in the shape of an inverted funnel, the collecting platform 8 is cylindrical, and the circumference of the collecting platform 8 is greater than the circumference of the top of the discharge pipe 9 and the circumference of the bottom of the second feed pipe 7, and the volume of the lower chamber 4 is larger than that of the upper chamber 1.

[0031] The specific implementation process is as follows: the dispersed phase fluid solvent is injected through the first feed pipe 2, and the dispersed phase fluid solvent is divided into four parts through the funnel-shaped first feed pipe 2 and flows out from the first conduit 5. The dispersed phase fluid solvent will flow through the temperature control unit 3 with the temperature set in advance, and the temperature control unit 3 fully helps the dispersed phase fluid solvent to react. At the same time, the continuous phase fluid solvent is injected from the second feed pipe 7, and the second feed pipe 7 divides the continuous phase fluid solvent into four parts and flows out from the second conduit 6. The second conduit 6 and the first conduit 5 are connected with the third conduit 10. The continuous phase fluid will shear the dispersed phase at the intersection of the first conduit 5, the second conduit 6 and the third conduit 10 to generate microsphere droplets. The generated microspheres flow into the collection platform 8 through the third conduit 10, and then flow out through the discharge pipe 9 at the bottom of the collection platform 8, that is, the preparation of polymerized microspheres is completed.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] The above is only an embodiment of the utility model. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, which will not affect the effect of the implementation of the utility model and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to explain the content of the claims.

Claims

1. An integrated microreactor for high-throughput preparation of organic polymer microspheres, characterized in that: The invention comprises a fluid delivery channel and a droplet generating device, wherein the fluid delivery channel has an upper chamber and a lower chamber, wherein the upper chamber is provided with a first feed pipe, wherein the first feed pipe is connected with a plurality of first conduits along its circumference, wherein each of the first conduits is provided with a temperature control unit, and the temperature control unit is fixedly connected between the upper chamber and the lower chamber; The position of the droplet generating device and the position of the first feeding pipe are both located on the same vertical horizontal line, the droplet generating device is connected to a plurality of second conduits and third conduits, and the first conduits are connected to the second conduits and the third conduits; The temperature control unit is connected to a temperature control system for providing temperature regulation for the temperature control unit.

2. The integrated microreactor for high-throughput preparation of organic polymer microspheres according to claim 1, characterized in that: The droplet generating device comprises a second feed pipe, a collecting platform and a discharge pipe which are connected from top to bottom. The second feed pipe is connected with the second conduit along its circumference, and the collecting platform is connected with the third conduit along its circumference.

3. The integrated microreactor for high-throughput preparation of organic polymer microspheres according to claim 2, characterized in that: The first feeding pipe is funnel-shaped.

4. The integrated microreactor for high-throughput preparation of organic polymer microspheres according to claim 3, characterized in that: There are four first conduits, and the angle between adjacent first conduits is 90°.

5. The integrated microreactor for high-throughput preparation of organic polymer microspheres according to claim 4, characterized in that: The second feeding tube is in the shape of an inverted funnel.

6. The integrated microreactor for high-throughput preparation of organic polymer microspheres according to claim 5, characterized in that: The collecting platform is cylindrical, and the circumference of the collecting platform is greater than the circumference of the top of the discharge pipe and the circumference of the bottom of the second feed pipe.

7. The integrated microreactor for high-throughput preparation of organic polymer microspheres according to claim 6, characterized in that: The volume of the lower chamber is larger than that of the upper chamber.

8. The integrated microreactor for high-throughput preparation of organic polymer microspheres according to claim 7, characterized in that: The temperature control unit is cylindrical.

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