CN110813211A - Micro-reactor and manufacturing method thereof - Google Patents
Micro-reactor and manufacturing method thereof Download PDFInfo
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- CN110813211A CN110813211A CN201911225135.7A CN201911225135A CN110813211A CN 110813211 A CN110813211 A CN 110813211A CN 201911225135 A CN201911225135 A CN 201911225135A CN 110813211 A CN110813211 A CN 110813211A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 238000010146 3D printing Methods 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 239000011148 porous material Substances 0.000 claims abstract description 14
- 239000007769 metal material Substances 0.000 claims abstract description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 238000010894 electron beam technology Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 36
- 239000007787 solid Substances 0.000 abstract description 17
- 239000012530 fluid Substances 0.000 abstract description 16
- 239000002245 particle Substances 0.000 abstract description 14
- 239000003054 catalyst Substances 0.000 abstract description 10
- 239000012847 fine chemical Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000003889 chemical engineering Methods 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 10
- 238000002156 mixing Methods 0.000 description 9
- 239000000376 reactant Substances 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
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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
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0093—Microreactors, e.g. miniaturised or microfabricated reactors
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- Chemical & Material Sciences (AREA)
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Abstract
The invention relates to the technical field of fine chemical engineering, and discloses a microreactor which comprises a microreactor body, wherein a microchannel is formed in the microreactor body, the microchannel is provided with a liquid inlet and a liquid outlet, a containing layer made of a porous material is embedded on the bottom wall of the microchannel, and the containing layer can well contain solid particles generated by reaction, so that the microchannel can be prevented from being blocked, the solid particles can be prevented from being mixed into finally flowing fluid, and for the reaction needing to add a catalyst, the catalyst can be placed in the containing layer in advance, so that the chemical reaction rate can be improved; the invention also discloses a manufacturing method of the microreactor, the microreactor is prepared by 3D printing, the microreactor made of the metal material with the three-dimensional structure is quickly constructed by the 3D printing technology, and the method is simple to operate, high in speed and easy to industrialize.
Description
Technical Field
The invention relates to the technical field of fine chemical engineering, in particular to a microreactor and a manufacturing method thereof.
Background
The traditional kettle type mixing reactor is generally composed of a kettle body, a heat transfer part, a transmission part, a stirring part, a sealing part and the like, and has large volume and large addition amount of primary raw materials. In general, the addition of disposable raw materials is large, and the added materials contain flammable, explosive, toxic and corrosive media and the like, so that the safety of human bodies and property can be harmed to different degrees, and therefore, the reaction kettle is a chemical device with great danger. According to statistics, forty major safety accidents related to chemical reaction kettles are counted on average every year in China. In addition, the addition of the raw materials for one time is large, so that the reaction is difficult to accurately control, and the product quality is influenced. Therefore, an efficient and safe special mixing device is urgently needed to replace the traditional kettle type mixing reaction device. The greening and sustainable development of the fine chemical industry urgently requires chemical workers to develop and use a high-efficiency synthesis mixing reaction device and a unique synthesis route, so that raw materials, resources and energy are utilized to the maximum extent, the generation and the emission of byproducts are reduced or completely eliminated, the production cost of products is reduced, the market competitiveness of the products is improved, and the structural transformation target of the fine chemical production, namely 'saving, cleaning and safety' is realized.
Microchannel reactors are three-dimensional building blocks that can be used for chemical reactions fabricated in a solid matrix by means of special microfabrication techniques. Generally refers to a reactor with a fluid microchannel equivalent diameter of several micrometers or hundreds of micrometers, in the narrow fluid microchannel, the thickness of a dynamic boundary layer is greatly reduced, and the average thermal and mass diffusion distance is greatly shortened, so that the chemical reaction in the microchannel can utilize the inherent characteristics of rapid surface reaction kinetics. Compared with the traditional chemical reactor, the microchannel reactor has the main advantages that the surface area to volume ratio is high, and the increase of the specific surface area can not only strengthen heat transfer, but also strengthen the reaction process; in addition, the heat conductivity of the microchannel reactor is much higher than that of the traditional heat exchanger, and the high heat exchange efficiency enables the reaction to be carried out under isothermal temperature; heat transfer and mass transfer are simultaneously improved in a microchannel reactor, the fluid in the microchannel is laminar, and thus process parameters such as temperature, pressure, residence time, flow rate, and the like are easily controlled; in addition, the microchannel reactor is a separate reaction system, the amplification of the reactor is only to simply carry out parallel superposition on the microchannel reactor, and the amplification effect does not exist in the industrialization of the reactor.
At present, the design and the manufacture aiming at the microchannel reactor are not few in China, the designed microchannel reactor has more advantages compared with a reaction kettle, but the existing microchannel reactor has the following defects: 1. after two or more than two reaction fluids are introduced into the existing microchannel reactor, solid particle products are often accompanied in the reaction, and the solid particle products easily block the reaction microchannel, and the solid particles are often mixed into the finally output reaction liquid to influence the product quality; 2. catalyst is required to be added in part of reaction, and the micro-channel size of the existing micro-channel reactor is small, so that the catalyst is not easy to be added, and the application of the micro-channel reactor is influenced.
Disclosure of Invention
The object of the present invention is to overcome the drawbacks of the prior art by providing a microreactor which is able to contain solid particulate product and catalyst, avoiding the clogging of the microchannel and the mixing of the solid particulate product into the fluid which finally flows out.
In order to achieve the above object, a first aspect of the present invention provides a microreactor, including a microreactor body, wherein a microchannel is formed in the microreactor body, the microchannel has a liquid inlet and a liquid outlet, and a receiving layer made of a porous material is embedded in a bottom wall of the microchannel.
Preferably, the microchannel has an S-shape, a wave-shape, a U-shape, a zigzag shape or a spiral shape as a whole.
Preferably, the cross section of the microchannel is circular or elliptical or triangular or polygonal.
Preferably, the microchannel has at least two of the liquid inlets.
Preferably, the inner diameter of the micro-channel is 0.5 mm-10 mm.
Preferably, the thickness of the accommodating layer is 0.3-10 mm, and the width of the accommodating layer is 0.3-10 mm.
Preferably, the accommodating layer extends along the direction of the microchannel, and the distance between the front end of the accommodating layer and the liquid outlet and the distance between the rear end of the accommodating layer and the liquid inlet are both 1 mm-10 mm.
Preferably, the microreactor body is made of a metal material, a ceramic material or a glass material.
In the same object, the second aspect of the present invention also provides a method for manufacturing the microreactor, which is formed by 3D printing.
Preferably, the 3D printing includes laser 3D printing, electron beam 3D printing, adhesive extrusion type 3D printing, and thermal extrusion type 3D printing.
Compared with the prior art, the microreactor provided by the embodiment of the invention has the beneficial effects that:
the micro-reactor comprises a micro-reactor body, wherein a micro-channel is arranged in the micro-reactor body, the micro-channel is provided with a liquid inlet and a liquid outlet, and a containing layer made of a porous material is embedded on the bottom wall of the micro-channel; 1. when the microreactor is used for carrying out chemical reaction and the reaction is accompanied by solid particle products, the accommodating layer at the bottom of the microchannel can well accommodate the generated solid particles, so that the blockage of the microchannel can be avoided, and the solid particles can be prevented from being mixed into finally flowing fluid. Moreover, the accommodating layer made of the porous material is beneficial to uniformly mixing the introduced fluid reactants so as to fully react the fluid reactants; 2. aiming at the reaction of adding catalyst specially, the catalyst can be placed in the accommodating layer of the microreactor in advance, so that the chemical reaction can be carried out more quickly and efficiently.
The micro-reactor can be used for enabling the fluid mixing reaction in the chemical industry to be carried out more efficiently, safely and environmentally, and the micro-channel reactor with the structure has simple and mature manufacturing method and great significance for the development of the chemical industry.
Drawings
FIG. 1 is a schematic longitudinal sectional view of a microchannel of a microreactor according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a microchannel of a microreactor according to an embodiment of the present invention.
In the figure, 1, a microreactor body; 2. a microchannel; 3. an accommodating layer; 4. a liquid inlet; 5. and a liquid outlet.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", "front", "rear", and the like, which indicate the orientation or positional relationship, are used in the present invention based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and for the simplicity of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
As shown in fig. 1 and fig. 2, a first aspect of a preferred embodiment of the present invention provides a microreactor, including a microreactor body 1, a microchannel 2 is formed inside the microreactor body 1, the microchannel 2 has a liquid inlet 4 and a liquid outlet 5, and a receiving layer 3 made of a porous material is embedded on a bottom wall of the microchannel 2.
Based on above-mentioned technical scheme, provide a micro-reactor in this embodiment, micro-channel 2 has been seted up to micro-reactor body 1 is inside, micro-channel 2 has inlet 4 and liquid outlet 5, it holds layer 3 by porous material is made to inlay on micro-channel 2's the diapire, use this micro-reactor to carry out chemical reaction, when the reaction is accompanied with solid particle product, the layer 3 that holds by porous material of micro-channel 2 bottom can be fine holds the solid particle who generates, thereby can avoid micro-channel 2 to block up, and can avoid solid particle to sneak into in the final fluid that flows out, to the reaction that needs added catalyst, can arrange the catalyst in advance and hold layer 3, can improve chemical reaction rate.
Preferably, the microchannel 2 has an overall S-shape or a wave-shape or a U-shape or a zigzag shape or a spiral shape. In the present embodiment, the microchannel 2 is in an S-shape, and the micro-reactor has a high surface area and volume ratio, which can enhance the reaction process, and has high thermal conductivity, so that the reaction can be performed isothermally, and the heat transfer and mass transfer are good.
Illustratively, the microreactor body is of a shape matching the shape of said microchannel 2, and in particular may be S-shaped or wave-shaped or U-shaped or zigzag-shaped or spiral-shaped or the like.
Preferably, the cross-section of the microchannel 2 is circular or elliptical or triangular or polygonal. Illustratively, in the present embodiment, the cross-section of the microchannel 2 is circular, and the fluid can react in the microchannel 2 and finally flow out smoothly.
Preferably, the microchannel 2 has at least two loading ports 4. Illustratively, in the present embodiment, the microchannel 2 has two loading ports 4, and it should be noted that the number of loading ports 4 of the microchannel 2 is the same as the number of kinds of reactant fluids.
As shown in FIG. 2, it is preferable that the inner diameter of the microchannel 2 is R, which is equal to 0.5mm to 10 mm. Illustratively, in the present embodiment, the inner diameter R of the microchannel 2 is 3mm, and in the narrow microchannel 2, the thickness of the dynamic boundary layer is greatly reduced, and the average thermal and mass diffusion distance is greatly shortened, so that the chemical reaction in the microchannel 2 can utilize the inherent characteristics of rapid surface reaction kinetics, and the reaction is more efficient.
Preferably, the containment layer 3 has a thickness H equal to 0.3-10 mm, a width B equal to 0.3-10 mm. Illustratively, in this embodiment, the thickness H of the accommodating layer 3 is 0.5mm, the width B is 2mm, and the accommodating layer 3 is completely embedded in the bottom wall of the microchannel 2, so that the connection with the microchannel 2 is firmer.
Preferably, the accommodating layer 3 extends along the direction of the microchannel 2, and the distance between the front end of the accommodating layer 3 and the liquid outlet 5 and the distance between the rear end of the accommodating layer 3 and the liquid inlet 4 are both 1mm to 10 mm. Illustratively, in this embodiment, the distance between the front end of the accommodating layer 3 and the liquid outlet 5 and the distance between the rear end of the accommodating layer 3 and the liquid inlet 4 are both 3mm, which facilitates the fluid reactant to enter and exit the microreactor body 1.
Preferably, the porous material has pores in the form of uniform fine branches, pores or honeycombs. In this embodiment, the porous material has uniform fine-branched pores, which can well accommodate the generated solid particles and facilitate the uniform mixing of the fluid reactants for sufficient reaction.
Preferably, the microreactor body 1 is made of a metallic material or a ceramic material or a glass material having an anti-corrosion function. Illustratively, in this embodiment, the microreactor body 1 is made of a metal material with an anti-corrosion function, so as to prevent the microreactor body from being corroded and prevent reactants from being interfered and polluted.
Preferably, the inner wall of the micro-channel 2 may be smooth or may be provided with a texture.
Preferably, when the microreactor is used for carrying out chemical reaction, a plurality of microreactor bodies 1 can be connected in series or in parallel, and can be flexibly selected according to different reaction requirements.
The second aspect of the embodiments of the present invention further provides a manufacturing method of the microreactor, where the microreactor is manufactured by 3D printing. Through the 3D printing technology, the microreactor made of the metal material with the three-dimensional structure is constructed quickly, the operation is simple, the speed is high, and the industrialization is easy.
Preferably, the 3D printing comprises laser 3D printing or electron beam 3D printing or adhesive extrusion type 3D printing or thermal extrusion type 3D printing, and the 3D printing technology can print a complex micro-channel 2 structure, has higher fineness and is suitable for preparing a three-dimensional micro-channel reactor with a complex structure.
To sum up, the embodiment of the present invention provides a microreactor, wherein a microchannel 2 is formed inside a microreactor body 1, and a containing layer 3 made of a porous material is embedded on a bottom wall of the microchannel 2. The containing layer 3 can well contain solid particles generated by reaction in the microchannel 2, so that the blockage of the microchannel 2 and the mixing of the solid particles into finally flowing fluid can be avoided, and the containing layer 3 can also contain a catalyst. When the microreactor is used, the reaction can be carried out quickly, safely and efficiently, continuous production can be realized, and industrial amplification is easy to realize.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a micro-reactor, its characterized in that includes the micro-reactor body, the micro-channel has been seted up to micro-reactor body inside, the micro-channel has inlet and liquid outlet, inlay on the diapire of micro-channel and be equipped with the layer of holding of making by porous material.
2. The microreactor according to claim 1, wherein the microchannel is entirely S-shaped or waved or U-shaped or zigzag-shaped or spiral-shaped.
3. The microreactor of claim 1, wherein the cross-section of the microchannel is circular or elliptical or triangular or polygonal.
4. The microreactor of claim 1, wherein said microchannel has at least two of said liquid inlets.
5. The microreactor of claim 3, wherein the microchannel has an internal diameter of 0.5mm to 10 mm.
6. The microreactor of claim 5, wherein said containment layer has a thickness of 0.3-10 mm and a width of 0.3-10 mm.
7. The microreactor of claim 5, wherein the containment layer extends in the direction of the microchannel, and the distance between the front end of the containment layer and the liquid outlet and the distance between the rear end of the containment layer and the liquid inlet are each 1mm to 10 mm.
8. The microreactor according to claim 1, wherein said microreactor body is made of metallic material or ceramic material or glass material.
9. A method of manufacturing a microreactor according to any of claims 1 to 8, wherein the microreactor is shaped by 3D printing.
10. The method of manufacturing a microreactor according to claim 9, wherein said 3D printing comprises laser 3D printing, electron beam 3D printing, adhesive extrusion 3D printing and thermal extrusion 3D printing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911225135.7A CN110813211A (en) | 2019-12-03 | 2019-12-03 | Micro-reactor and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911225135.7A CN110813211A (en) | 2019-12-03 | 2019-12-03 | Micro-reactor and manufacturing method thereof |
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| CN110813211A true CN110813211A (en) | 2020-02-21 |
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| CN201911225135.7A Pending CN110813211A (en) | 2019-12-03 | 2019-12-03 | Micro-reactor and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115974554A (en) * | 2022-12-07 | 2023-04-18 | 之江实验室 | Transparent ceramic microreactor based on 3D printing integrated molding and preparation method thereof |
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| JP2004097209A (en) * | 2002-07-17 | 2004-04-02 | Kawamura Inst Of Chem Res | Method for analyzing polynucleotide |
| CN1759314A (en) * | 2003-03-11 | 2006-04-12 | 财团法人川村理化学研究所 | Micro fluid device and process for producing the same |
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| CN109758995A (en) * | 2019-03-05 | 2019-05-17 | 大连理工大学 | A kind of Universal fluorescence fluid photochemistry microreactor part and its 3D printing manufacturing method |
| CN211586541U (en) * | 2019-12-03 | 2020-09-29 | 广东省新材料研究所 | Micro-reactor |
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2019
- 2019-12-03 CN CN201911225135.7A patent/CN110813211A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| JP2004097209A (en) * | 2002-07-17 | 2004-04-02 | Kawamura Inst Of Chem Res | Method for analyzing polynucleotide |
| CN1759314A (en) * | 2003-03-11 | 2006-04-12 | 财团法人川村理化学研究所 | Micro fluid device and process for producing the same |
| CN108786678A (en) * | 2018-06-20 | 2018-11-13 | 华北电力大学 | It is a kind of that there is the novel microreactor and synthesis system for strengthening mixed function |
| CN109758995A (en) * | 2019-03-05 | 2019-05-17 | 大连理工大学 | A kind of Universal fluorescence fluid photochemistry microreactor part and its 3D printing manufacturing method |
| CN211586541U (en) * | 2019-12-03 | 2020-09-29 | 广东省新材料研究所 | Micro-reactor |
Non-Patent Citations (1)
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| 彭金辉等, 北京：国防工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115974554A (en) * | 2022-12-07 | 2023-04-18 | 之江实验室 | Transparent ceramic microreactor based on 3D printing integrated molding and preparation method thereof |
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