CN114011347B

CN114011347B - Net type micro-channel reactor for preparing nano micro-particles by liquid-liquid reaction

Info

Publication number: CN114011347B
Application number: CN202111280794.8A
Authority: CN
Inventors: 陈勇; 唐冰琳; 倪枨; 王东光; 陶亨聪; 张仁坤
Original assignee: Zhejiang Ocean University ZJOU
Current assignee: Zhejiang Ocean University ZJOU
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2023-02-03
Anticipated expiration: 2041-11-01
Also published as: CN114011347A

Abstract

The invention relates to a net-type microchannel reactor, in particular to a net-type microchannel reactor for preparing nano micro-particles by liquid-liquid reaction, which comprises a connecting frame, a liquid guide disc, a liquid discharge disc, a net-type channel reaction part and the like; a liquid guide disc is fixedly arranged above the connecting frame, a liquid discharge disc is fixedly arranged below the connecting frame, and a net type channel reaction component is communicated between the liquid guide disc and the liquid discharge disc. Carry out the heat exchange through coolant liquid and T type pipe to take away the heat on the T type pipe, realize radiating purpose, after that the coolant liquid carries out the heat exchange with first rigging board and second rigging board, the coolant liquid takes away the heat on first rigging board and the second rigging board, dispels the heat to first rigging board and second rigging board, reaches rapidly refrigerated effect, avoids microchannel reactor overload to operate.

Description

Net type micro-channel reactor for preparing nano micro-particles by liquid-liquid reaction

Technical Field

The invention relates to a net-type microchannel reactor, in particular to a net-type microchannel reactor for preparing nano micro-particles by liquid-liquid reaction.

Background

With the continuous perfect and innovative production process in China, commercial grade nano materials are continuously produced and developed, and as the nano particles are ultrafine particles with the particle size of nano magnitude, the nano particles have special properties such as surface effect, small size effect, quantum size effect, macroscopic quantum tunneling effect and the like, the nano materials and devices prepared by the nano materials are widely applied to various fields of national economy.

When the traditional reaction equipment for preparing nano micro particles is used, the reaction rate is too high after reaction liquids are mixed with each other, heat can be emitted during the reaction between the reaction liquids, meanwhile, the heat exchange efficiency of the traditional reaction equipment is lower, the reaction equipment is easy to thermally expand excessively under a high-temperature environment, and irreversible damage is caused.

Disclosure of Invention

Therefore, there is a need to design a mesh-type microchannel reactor for preparing nanoparticles by liquid-liquid reaction, which can uniformly disperse the reaction solution, quickly take away heat to avoid overload operation of the microchannel reactor, and adjust the heat dissipation efficiency according to the amount of the reaction solution, in view of the disadvantages of the prior art.

In view of this, the invention provides a mesh-type microchannel reactor for preparing nanoparticles by liquid-liquid reaction, which comprises a connecting frame, a liquid guide disc, a liquid discharge disc, a mesh-type channel reaction part, a solution primary mixing part and a heat exchange part, wherein the mesh-type microchannel reactor comprises: the liquid guide plate is fixedly arranged above the connecting frame and used for conveying reactants; the liquid discharge disc is fixedly arranged below the connecting frame and is used for discharging the mixed liquid; the net-type channel reaction component is communicated between the liquid guide disk and the liquid discharge disk and is used for fully mixing and reacting the first reaction liquid and the second reaction liquid; the top surface of the liquid guide disc is fixedly provided with a solution primary mixing part, and the solution primary mixing part is used for carrying out primary mixing reaction on the reaction liquid I and the reaction liquid II; and the heat exchange component is arranged on the solution preliminary mixing component and used for carrying out heat exchange type heat dissipation on the net type channel reaction component and the solution preliminary mixing component.

In a preferred embodiment of the present invention, the mesh channel reaction component includes a first attachment plate, a second attachment plate, a bolt and a nut, a plurality of pairs of the first attachment plate and the second attachment plate are communicated between the liquid guide plate and the liquid discharge plate and are in contact with the first attachment plate and the second attachment plate, a pair of bolts are fixedly connected to both sides of the second attachment plate, the bolts pass through the first attachment plate, the nuts are connected to the bolts in a threaded fit manner, the nuts are in contact with the first attachment plate, a mesh groove is formed in the first attachment plate, and a mesh groove is also formed in the second attachment plate.

In a preferred embodiment of the invention, the solution primary mixing part comprises a T-shaped pipe, a liquid inlet frame, a supporting seat, a double-shaft motor, a rotating shaft and a circular groove cylinder, wherein the T-shaped pipe is fixedly connected to the top surface of the liquid guide disc, the two ends of the T-shaped pipe are communicated with the liquid inlet frame, the left side of the liquid inlet frame on the left side is fixedly connected with the supporting seat, the double-shaft motor is fixedly installed on the supporting seat, the rotating shaft is welded at the right end of an output shaft of the double-shaft motor and rotatably connected with the liquid inlet frame on the left side, the two circular groove cylinders are fixedly connected to the rotating shaft, and the circular groove cylinders are positioned in the T-shaped pipe.

In a preferred embodiment of the present invention, the flow holes are uniformly distributed in the cylindrical tank, and the first reaction solution and the second reaction solution are uniformly dispersed in the flow holes, so as to ensure the uniformity of the first reaction solution and the second reaction solution to the maximum extent.

In a preferred embodiment of the invention, the heat exchange component comprises a T-shaped heat exchange cover, a water pump, a water inlet pipe, a curved pipe, a heat exchange plate, a drainage cover, a liquid collection frame and a composite curved liquid exchange pipe, the T-shaped heat exchange cover is sleeved on the T-shaped pipe, the water pump is fixedly installed on the supporting seat, the left end of an output shaft of the double-shaft motor is connected with an input shaft of the water pump, the water inlet pipe is fixedly connected to the front side of the water pump, the curved pipe is fixedly connected to the rear side of the water pump, one end of the curved pipe is communicated with the T-shaped heat exchange cover, the heat exchange plate is arranged between two adjacent groups of first attaching plates and second attaching plates, the composite curved liquid exchange pipe is arranged on the heat exchange plate, one end of the right side of the composite curved liquid exchange pipe is fixedly connected to the drainage cover, one end of the left side of the composite curved liquid exchange pipe is communicated with the liquid collection frame, and the liquid collection frame is communicated with the bottom of the T-shaped heat exchange cover.

In a preferred embodiment of the present invention, five curved tubes are disposed in the middle of the composite curved liquid-changing tube, so as to increase the contact area between the composite curved liquid-changing tube and the heat exchange plate and improve the heat exchange efficiency between the heat exchange plate and the first and second engaging plates.

In a preferred embodiment of the invention, the device further comprises a reaction rate matching part, the bottom of the liquid inlet frame on the right side is provided with the reaction rate matching part, the reaction rate matching part comprises a sealing plate, an air bag seat, insulating liquid, a resistance sheet, a power supply sheet and a conducting strip, the bottom of the liquid inlet frame on the right side is connected with the sealing plate in a manner of being connected through a fastener, the top of the sealing plate is provided with the air bag seat, the air bag seat penetrates through the liquid inlet frame on the right side, a U-shaped groove is formed in the sealing plate and communicated with the air bag seat, the U-shaped groove is filled with the insulating liquid, the resistance sheet is arranged in the U-shaped groove, the power supply sheet is fixedly connected in the U-shaped groove, the conducting strip is connected with the conducting strip in a sliding manner together on the resistance sheet and the power supply sheet, and the conducting strip is contacted with the insulating liquid.

In a preferred embodiment of the present invention, the insulating liquid is an ethanol liquid, the U-shaped groove is filled with the ethanol liquid, and the conductive sheet contacts with the ethanol liquid.

In a preferred embodiment of the invention, the device further comprises a secondary stirring cylinder, and the secondary stirring cylinder is arranged below the inside of the T-shaped pipe.

In a preferred embodiment of the present invention, the present invention further comprises a stirring impeller, and the stirring impeller is fixed to the rotating shaft.

Compared with the prior art, the invention has the following advantages:

1. the rotation of the round groove barrel can vibrate the first reaction liquid and the second reaction liquid, solutes in the first reaction liquid and the second reaction liquid can be uniformly dispersed, and the phenomenon that the first reaction liquid and the second reaction liquid have too much lower-layer solutes and less upper-layer solutes due to long-time storage is avoided, so that the first reaction liquid and the second reaction liquid are good in uniformity.

2. Through the mesh-shaped groove, the first reaction liquid and the second reaction liquid can be fully mixed and reacted, the reaction rate of the first reaction liquid and the second reaction liquid is improved, and the insufficient reaction of part of the reaction liquid is avoided.

3. Carry out the heat exchange through coolant liquid and T type pipe to take away the heat on the T type pipe, realize radiating purpose, after that the coolant liquid carries out the heat exchange with first rigging board and second rigging board, the coolant liquid takes away the heat on first rigging board and the second rigging board, dispels the heat to first rigging board and second rigging board, reaches quick refrigerated effect, avoids microchannel reactor overload to operate.

4. According to the addition of the second reaction liquid, the liquid level difference of the ethanol liquid on the two sides of the U-shaped groove can be adjusted, so that the position of the conducting strip is adjusted, the resistance of the resistor disc is changed, the running power of the double-shaft motor is changed, the cooling liquid flows rapidly, and the purpose of adjusting the heat dissipation efficiency is achieved.

5. Through the secondary stirring barrel, the mixed liquid in the T-shaped pipe can be fully stirred, solutes in the reaction liquid I and the reaction liquid II can be in mutual contact, nano-particles can be conveniently generated, and the yield of the prepared nano-particles can be improved.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of the present invention.

Fig. 2 is a schematic perspective view of a second embodiment of the present invention.

FIG. 3 is a schematic view of a first partial body structure according to the present invention.

Fig. 4 is a schematic diagram of a second partial body structure according to the present invention.

Fig. 5 is a partially disassembled perspective view of a mesh channel reaction member of the present invention.

Fig. 6 is a schematic perspective view of the first adhesive plate and the mesh groove of the present invention.

Fig. 7 is a schematic sectional perspective view of a solution primary mixing element according to the present invention.

FIG. 8 is a schematic perspective view of a part of a solution preliminary mixing part according to the present invention.

FIG. 9 is a schematic view of a first partially split gas configuration of a heat exchange section of the present invention.

FIG. 10 is a schematic view of a second partially split gas configuration of a heat exchange section of the present invention.

Fig. 11 is a perspective view of a third part of the heat exchange component of the present invention.

FIG. 12 is a schematic partial perspective view of a reaction rate matching unit according to the present invention.

FIG. 13 is a schematic sectional perspective view of a reaction rate matching block according to the present invention.

Wherein the figures include the following reference numerals: 1. the device comprises a connecting frame, 2, a liquid guide disc, 3, a liquid discharge disc, 4, a net type channel reaction part, 41, a first attaching plate, 42, a second attaching plate, 43, bolts, 44, nuts, 45, a net-shaped groove, 5, a solution primary mixing part, 51, a T-shaped pipe, 52, a liquid inlet frame, 53, a supporting seat, 54, a double-shaft motor, 55, a rotating shaft, 56, a circular groove cylinder, 6, a heat exchange part, 61, a T-shaped heat exchange cover, 62, a water pump, 63, a water inlet pipe, 64, a curved pipe, 65, a heat exchange plate, 66, a water discharge cover, 67, a liquid collection frame, 68, a composite curved liquid exchange pipe, 7, a reaction rate matching part, 71, a sealing plate, 72, an air bag seat, 73, a U-shaped groove, 74, ethanol liquid, 75, a resistor sheet, 76, a power supply sheet, 77, a conducting sheet, 8, a secondary stirring cylinder, 9 and a stirring impeller.

Detailed Description

In order to make the technical solution and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.

Example 1

A net type microchannel reactor for preparing nano micro particles through liquid-liquid reaction is disclosed, as shown in figures 1-13, and comprises a connecting frame 1, a liquid guide disc 2, a liquid discharge disc 3, a net type channel reaction component 4, a solution preliminary mixing component 5 and a heat exchange component 6, wherein the liquid guide disc 2 is fixedly installed above the connecting frame 1, the liquid discharge disc 3 for discharging mixed liquid is fixedly installed below the connecting frame 1, the net type channel reaction component 4 is communicated between the liquid guide disc 2 and the liquid discharge disc 3, the solution preliminary mixing component 5 is fixedly installed on the top surface of the liquid guide disc 2, the solution preliminary mixing component 5 is used for carrying out the preliminary mixing reaction of a first reaction liquid and a second reaction liquid, the heat exchange component 6 is arranged on the solution preliminary mixing component 5, and the heat exchange component 6 is used for taking away heat generated by the reaction.

The net-type channel reaction component 4 comprises a first attaching plate 41, a second attaching plate 42, bolts 43 and nuts 44, the joint between the drain pan 2 and the drain pan 3 is provided with a plurality of pairs of first attaching plates 41 and second attaching plates 42, the joint is in contact with the first attaching plates 41 and the second attaching plates 42, two sides of the second attaching plates 42 are fixedly connected with a pair of bolts 43, the bolts 43 penetrate through the first attaching plates 41, the bolts 43 are connected with the nuts 44 in a thread fit mode, the nuts 44 are in contact with the first attaching plates 41, the bolts 43 and the nuts 44 are used for fixing the first attaching plates 41 and the second attaching plates 42 in the same group, a net-shaped groove 45 is formed in the first attaching plates 41, and a net-shaped groove 45 is also formed in the second attaching plates 42.

The solution primary mixing part 5 comprises a T-shaped pipe 51, a liquid inlet frame 52, a supporting seat 53, a double-shaft motor 54, a rotating shaft 55 and a circular groove cylinder 56, wherein the T-shaped pipe 51 is fixedly connected to the top surface of the liquid guide disc 2, the T-shaped pipe 51 is used for conveying reaction liquid, the two ends of the T-shaped pipe 51 are communicated with the liquid inlet frame 52 used for adding the reaction liquid, the supporting seat 53 is fixedly connected to the left side of the liquid inlet frame 52 on the left side, the double-shaft motor 54 used for driving is fixedly installed on the supporting seat 53, the rotating shaft 55 is welded at the right end of an output shaft of the double-shaft motor 54, the rotating shaft 55 is rotatably connected with the liquid inlet frame 52 on the left side, the two circular groove cylinders 56 are fixedly connected to the rotating shaft 55, and the circular groove cylinder 56 is located in the T-shaped pipe 51.

The heat exchange component 6 comprises a T-shaped heat exchange cover 61, a water pump 62, a water inlet pipe 63, a curved pipe 64, a heat exchange plate 65, a water discharge cover 66, a liquid collection frame 67 and a composite curved liquid exchange pipe 68, the T-shaped heat exchange cover 61 is sleeved on the T-shaped pipe 51, the water pump 62 is fixedly installed on the supporting seat 53 and used for pumping cooling liquid, the left end of an output shaft of the double-shaft motor 54 is connected with an input shaft of the water pump 62, the water inlet pipe 63 is fixedly connected to the front side of the water pump 62, the curved pipe 64 used for conveying the cooling liquid is fixedly connected to the rear side of the water pump 62, one end of the curved pipe 64 is communicated with the T-shaped heat exchange cover 61, the heat exchange plate 65 is arranged between two adjacent groups of first attaching plates 41 and second attaching plates 42, the composite curved liquid exchange pipe 68 used for conveying the cooling liquid is arranged on the heat exchange plate 65, the water discharge cover 66 is fixedly connected to one end of the right side of the composite curved liquid exchange pipe 68, the left end of the composite curved liquid exchange pipe 68 is communicated with the liquid collection frame 67, and the liquid collection frame 67 is communicated with the bottom of the T-shaped heat exchange cover 61.

Before the device is used, the same pair of first attaching plate 41 and second attaching plate 42 are fixed by using bolts 43 and nuts 44, so that the same pair of second attaching plate 42 and first attaching plate 41 are tightly attached, the two liquid inlet frames 52 are respectively communicated with the two liquid conveying pipelines, the water inlet pipe 63 is connected with a cooling device, when two reaction liquids need to react, the first reaction liquid and the second reaction liquid are respectively conveyed towards the two liquid inlet frames 52 through the two liquid conveying pipelines, a worker starts the double-shaft motor 54, the output shaft of the double-shaft motor 54 rotates to drive the rotating shaft 55 and the circular groove cylinder 56 to rotate, the first reaction liquid and the second reaction liquid pass through the circular groove cylinder 56 to enter the T-shaped pipe 51, the circular groove cylinder 56 rotates to vibrate the first reaction liquid and the second reaction liquid, solutes in the first reaction liquid and the second reaction liquid are uniformly dispersed, the method has the advantages that incomplete reaction caused by uneven dispersion of solutes due to long-time storage of the first reaction liquid and the second reaction liquid is avoided, the first reaction liquid and the second reaction liquid react with each other to generate nano micro particles through the T-shaped pipe 51, incomplete reaction is caused by insufficient contact of the solutes of the first reaction liquid and the second reaction liquid, the first reaction liquid and the second reaction liquid flow downwards, the first reaction liquid and the second reaction liquid enter the space between the first attaching plate 41 and the second attaching plate 42 through the liquid guide plate 2, the positions of the first reaction liquid and the second reaction liquid can be adjusted again through the mesh groove 45, the solutes in the first reaction liquid and the second reaction liquid contact with each other to generate the nano micro particles, the purpose of improving the generation rate of the nano micro particles is achieved, and waste caused by the fact that part of the reaction liquid does not participate in the reaction is avoided.

When the first reaction solution and the second reaction solution are mixed and react, heat is generated, the T-shaped pipe 51, the first attaching plate 41 and the second attaching plate 42 generate heat seriously, the water pump 62 can be started while the output shaft of the double-shaft motor 54 rotates, the water pump 62 pumps cooling liquid in cooling equipment into the curved pipe 64, the cooling liquid flows to the T-shaped heat exchange cover 61 through the curved pipe 64, the cooling liquid in the T-shaped heat exchange cover 61 exchanges heat with the T-shaped pipe 51, and therefore the heat on the T-shaped pipe 51 is taken away, and the purpose of heat dissipation is achieved. Then the coolant in the T-shaped heat exchange cover 61 flows into the composite curved liquid exchange tube 68 through the liquid collecting frame 67, the coolant in the composite curved liquid exchange tube 68 exchanges heat with the first attaching plate 41 and the second attaching plate 42, the coolant takes away the heat on the first attaching plate 41 and the second attaching plate 42, the first attaching plate 41 and the second attaching plate 42 dissipate heat, and the coolant flows out through the drain cover 66.

Example 2

On the basis of embodiment 1, as shown in fig. 12 to 13, the apparatus further includes a reaction rate matching component 7, the bottom of the liquid inlet frame 52 on the right side is provided with the reaction rate matching component 7, the reaction rate matching component 7 is used for adjusting the reaction rate and the heat dissipation efficiency according to the addition of the reaction liquid two, the reaction rate matching component 7 includes a sealing plate 71, an air bag seat 72, an alcohol liquid 74, a resistor sheet 75, a power supply sheet 76, and a conducting sheet 77, the bottom of the liquid inlet frame 52 on the right side is connected with the sealing plate 71 through a fastener, the top of the sealing plate 71 is provided with the air bag seat 72, the air bag seat 72 penetrates through the liquid inlet frame 52 on the right side, a U-shaped groove 73 is formed in the sealing plate 71, the U-shaped groove 73 is communicated with the air bag seat 72, the alcohol liquid 74 is filled in the U-shaped groove 73, the conducting sheet 75 is arranged in the U-shaped groove 73, the resistor sheet 76 for supplying power is fixedly connected in the U-shaped groove 73, the resistor sheet 75 and the power supply sheet 76 are connected with the conducting sheet 77 in a sliding manner, the resistor sheet 75 is in contact with the alcohol liquid 74, and the alcohol liquid 74 is used for pushing the alcohol liquid 74 to move upward.

The resistor disc 75 is connected with the double-shaft motor 54 through a circuit, the power supply sheet 76 can supply power to the resistor disc 75 through the conducting sheet 77, when the second reaction liquid is conveyed to the liquid inlet frame 52 on the right side, the second reaction liquid can extrude the air bag seat 72, air pressure in the air bag seat 72 can push the ethanol liquid 74 to move upwards along the right side of the U-shaped groove 73, the ethanol liquid 74 can push the conducting sheet 77 to move upwards, and therefore the resistance value of the resistor disc 75 is reduced, further the current passing through the resistor disc 75 is increased, the running power of the double-shaft motor 54 is increased, the power of the water pump 62 is increased, the heat dissipation efficiency of the cooling liquid on the T-shaped pipe 51, the first laminating plate 41 and the second laminating plate 42 is accelerated, when the second reaction liquid is more, the pressure borne by the air bag seat 72 is larger, the liquid level difference of the ethanol liquid 74 on the two sides in the U-shaped groove 73 is larger, the resistance value of the resistor disc 75 is smaller, the running power of the double-shaft motor 54 is changed, and the effect of adjusting the heat dissipation efficiency according to the addition amount of the second reaction liquid is achieved.

Example 3

In addition to the embodiment 1, as shown in fig. 7, a secondary stirring cylinder 8 is further included, a secondary stirring cylinder 8 is provided in the lower portion of the inside of the T-shaped pipe 51, and the secondary stirring cylinder 8 is used for sufficiently stirring the mixed liquid in the T-shaped pipe 51.

When the mixed liquid in the T-shaped pipe 51 flows downwards, the secondary stirring cylinder 8 can sufficiently stir the mixed liquid in the T-shaped pipe 51, so that the mixed liquid in the T-shaped pipe 51 is sufficiently dispersed, solutes in the first reaction liquid and the second reaction liquid can be contacted with each other to generate nanoparticles, and the yield of the prepared nanoparticles is improved.

Example 4

As shown in fig. 8, the apparatus of example 1 further includes a stirring impeller 9, the stirring impeller 9 is fixed to the rotating shaft 55, and the stirring impeller 9 is used to stir the first reaction solution and the second reaction solution.

The rotation of the rotating shaft 55 drives the stirring impeller 9 to rotate, and the stirring impeller 9 can stir the first reaction solution and the second reaction solution, so that the first reaction solution and the second reaction solution can be more fully mixed.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A net type microchannel reactor for preparing nano micro particles by liquid-liquid reaction comprises a connecting frame (1) and is characterized by further comprising a liquid guide disc (2), a liquid discharge disc (3), a net type channel reaction part (4), a solution primary mixing part (5) and a heat exchange part (6): the liquid guide plate (2) is fixedly arranged above the connecting frame (1), and the liquid guide plate (2) is used for conveying reactants;

the liquid discharging disc (3), the liquid discharging disc (3) is fixedly arranged below the connecting frame (1), and the liquid discharging disc (3) is used for discharging the mixed liquid;

the net-type channel reaction component (4) is communicated between the liquid guide disc (2) and the liquid discharge disc (3), and the net-type channel reaction component (4) is used for fully mixing and reacting the first reaction liquid and the second reaction liquid; the top surface of the liquid guide disc (2) is fixedly provided with a solution primary mixing part (5), and the solution primary mixing part (5) is used for enabling the first reaction liquid and the second reaction liquid to be primarily mixed and react; the heat exchange component (6) is arranged on the solution primary mixing component (5), and the heat exchange component (6) is used for carrying out heat exchange type heat dissipation on the net type channel reaction component (4) and the solution primary mixing component (5);

the solution preliminary mixing component (5) comprises a T-shaped pipe (51), a liquid inlet frame (52), a supporting seat (53), a double-shaft motor (54), a rotating shaft (55) and a circular groove cylinder (56), wherein the T-shaped pipe (51) is fixedly connected to the top surface of the liquid guide disc (2), the two ends of the T-shaped pipe (51) are communicated with the liquid inlet frame (52), the supporting seat (53) is fixedly connected to the left side of the liquid inlet frame (52) on the left side, the double-shaft motor (54) is fixedly installed on the supporting seat (53), the rotating shaft (55) is welded at the right end of an output shaft of the double-shaft motor (54), the rotating shaft (55) is rotatably connected with the liquid inlet frame (52) on the left side, the two circular groove cylinders (56) are fixedly connected to the rotating shaft (55), and the circular groove cylinder (56) is located in the T-shaped pipe (51);

flow holes are formed in the round groove cylinder (56) in a uniformly distributed mode, and the reaction liquid I and the reaction liquid II enter the flow holes to be uniformly dispersed, so that the uniformity of the reaction liquid I and the reaction liquid II is ensured to the greatest extent;

the heat exchange component (6) comprises a T-shaped heat exchange cover (61), a water pump (62), a water inlet pipe (63), a curved pipe (64), a heat exchange plate (65), a drainage cover (66), a liquid collecting frame (67) and a composite curved liquid exchange pipe (68), the T-shaped heat exchange cover (61) is sleeved on a T-shaped pipe (51), the water pump (62) is fixedly mounted on a supporting seat (53), the left end of an output shaft of a double-shaft motor (54) is connected with an input shaft of the water pump (62), the water inlet pipe (63) is fixedly connected to the front side of the water pump (62), the curved pipe (64) is fixedly connected to the rear side of the water pump (62), one end of the curved pipe (64) is communicated with the T-shaped heat exchange cover (61), the heat exchange plate (65) is arranged between two adjacent groups of first attaching plates (41) and second attaching plates (42), the composite curved liquid exchange pipe (68) is arranged on the heat exchange plate (65), the drainage cover (66) is fixedly connected to the right end of the composite curved liquid exchange pipe (68), one end of the left side of the composite curved liquid exchange pipe is communicated with the liquid collecting frame (67), and the bottom of the liquid collecting frame (67).

2. The mesh-type microchannel reactor for preparing nano micro particles through liquid-liquid reaction according to claim 1 is characterized in that the mesh-type microchannel reactor (4) comprises a first attaching plate (41), a second attaching plate (42), bolts (43) and nuts (44), a plurality of pairs of the first attaching plate (41) and the second attaching plate (42) are communicated between the liquid guide disc (2) and the liquid discharge disc (3), the first attaching plate (41) and the second attaching plate (42) are in contact with the first attaching plate (41) and the second attaching plate (42), a pair of bolts (43) are fixedly connected to two sides of the second attaching plate (42), the bolts (43) penetrate through the first attaching plate (41), the nuts (44) are connected to the bolts (43) in a threaded fit manner, the nuts (44) are in contact with the first attaching plate (41), mesh-type grooves (45) are formed in the first attaching plate (41), and mesh-type grooves (45) are also formed in the second attaching plate (42).

3. The net-type microchannel reactor for preparing nano-particles by liquid-liquid reaction as claimed in claim 1, wherein five curved tubes are arranged in the middle of the composite curved liquid exchange tube (68), so as to increase the contact area between the composite curved liquid exchange tube (68) and the heat exchange plate (65) and improve the heat exchange efficiency between the heat exchange plate (65) and the first abutting plate (41) and the second abutting plate (42).

4. The net-type microchannel reactor for preparing nano micro particles through liquid-liquid reaction according to claim 1, which is characterized by further comprising a reaction rate matching component (7), wherein the reaction rate matching component (7) is arranged at the bottom of the liquid inlet frame (52) on the right side, the reaction rate matching component (7) comprises a sealing plate (71), an air bag seat (72), insulating liquid, a resistor disc (75), a power supply disc (76) and a conducting strip (77), the bottom of the liquid inlet frame (52) on the right side is connected with the sealing plate (71) through a fastener, the top of the sealing plate (71) is provided with the air bag seat (72), the air bag seat (72) penetrates through the liquid inlet frame (52) on the right side, a U-shaped groove (73) is formed in the sealing plate (71), the U-shaped conducting strip (73) is communicated with the air bag seat (72), the U-shaped groove (73) is filled with the insulating liquid, a resistor disc (75) is arranged in the U-shaped groove (73), the power supply disc (76) is fixedly connected in the U-shaped groove (73), the resistor disc (75) and the power supply disc (76) are connected with the sliding type groove (77) and are in contact with the insulating liquid.

5. The net-type microchannel reactor for preparing nano-micro particles through liquid-liquid reaction as claimed in claim 4, wherein the insulating liquid is ethanol liquid (74), the ethanol liquid (74) is filled in the U-shaped groove (73), and the conducting strip (77) is in contact with the ethanol liquid (74).

6. The net type microchannel reactor for preparing nano-micro particles through liquid-liquid reaction as claimed in claim 1, which is characterized by further comprising a secondary stirring cylinder (8), wherein the secondary stirring cylinder (8) is arranged below the inside of the T-shaped pipe (51).

7. The net-type microchannel reactor for preparing nano-micro particles by liquid-liquid reaction as claimed in claim 1, further comprising a stirring impeller (9), wherein the stirring impeller (9) is fixed on the rotating shaft (55).