A microfluidic reactor supporting exothermic and gas-releasing reactions

Abstract

The present invention belongs to the technical field of chemical production, and specifically is a microfluidic reactor supporting exothermic and gas-releasing reactions; it comprises a reactor cylinder, a plurality of vertical microchannel heat exchange tubes are arranged in the reactor cylinder, and a circle of microchannel reaction grooves are arranged on the outer wall of the microchannel heat exchange tubes; a material guide plate is connected to the top of the plurality of microchannel heat exchange tubes, and a distribution groove is arranged on the outer side of each microchannel heat exchange tube of the material guide plate, and microchannel guide holes are arranged on the side wall of the distribution groove; a drainage groove is arranged on the material guide plate, and the drainage groove is connected with the distribution groove; the reactor cylinder is provided with an exhaust port; the present invention uses the plurality of microchannels on the outer wall of the microchannel heat exchange tube as reaction grooves for solution chemical reactions, and the inside of the microchannel heat exchange tube as a heat exchange channel, thereby increasing the contact area of ​​the solution, improving the heat exchange, and achieving the dual effects of reaction heat exchange and exhaust; and solves the problem of increased pressure of the reaction system or increased by-products.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical production, and in particular relates to a microchannel reactor supporting exothermic and degassing reactions. Background Art

[0002] A microchannel reactor is a device that conducts chemical reactions at a microscopic scale, usually consisting of a microchannel, a mixer, a separator, and a control unit. With the continuous advancement of micromachining technology and microfluidics technology, microreactors have gradually become a research hotspot in the fields of chemical synthesis, biomedicine, and materials science. Its characteristics include miniaturization, efficient mixing, rapid heat and mass transfer, and precise control. Its advantages are reducing the amount of reaction materials used, increasing the reaction rate and product purity, and achieving precise control of reaction conditions.

[0003] The existing microchannel reactor is provided with a microchannel with a channel width of 10 μm to 1000 μm. In the microchannel reactor, at least two fluids are divided after passing through the microchannel and then meet each other. In the microchannel reactor, the fluid is divided, thereby reducing the distance of fluid diffusion and increasing the speed of fluid mixing, so that the fluid can be effectively mixed in a shorter time. However, the existing microchannel reactor has high requirements for the purity and stability of the reaction materials, resulting in some reactions being unsuitable for being carried out in the microchannel reactor; especially for reactions with gas release and heat release in chemical reactions: such as reactions of some active metals with acids, redox reactions and organic reactions, since the reactions of the fluids are all carried out inside the microchannel, when the discharged gas cannot be discharged from the microchannel in time, it will cause the local pressure in the microchannel to increase, change the pressure of the reaction system, and cause the reaction rate to decrease; especially when the generated gas will react with the substances in the reaction system for a secondary reaction, it will inhibit the main reaction in the microchannel and increase the by-products. Summary of the invention

[0004] The present invention overcomes the shortcomings of the prior art and proposes a microfluidic reactor that supports exothermic and degassing reactions. The present invention is suitable for reaction systems in which gas is generated and side reactions exist, and solves the problem that in existing microchannel reactors, the gas cannot be discharged from the reaction system in time or the discharge rate is low, resulting in increased pressure in the reaction system or increased by-products.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions.

[0006] A microfluidic reactor supporting exothermic and gas-releasing reactions comprises a vertically arranged reactor cylinder, in which a plurality of vertical microchannel heat exchange tubes are arranged, and a circle of microchannel reaction grooves is arranged on the outer wall of each microchannel heat exchange tube; a same material guide plate is connected to the tops of the plurality of microchannel heat exchange tubes, a plurality of plug holes are arranged on the material guide plate, the upper ends of the microchannel heat exchange tubes are plugged into the corresponding plug holes, a distribution groove is arranged on the outer side of each plug hole of the material guide plate, and a circle of microchannel guide holes is arranged on the side wall between the distribution groove and the plug hole; a plurality of drainage grooves are arranged on the material guide plate, and the plurality of drainage grooves are connected to the plurality of distribution grooves in a one-to-one correspondence; the reactor cylinder is provided with an exhaust port, and the gas generated inside the microchannel reaction groove is directly discharged from the reactor cylinder through the exhaust port; the microchannel heat exchange tube is used to pass a heat exchange medium.

[0007] Furthermore, the reaction raw materials are introduced into each distribution groove through the drainage groove, and the distribution groove introduces the reaction raw materials into each microchannel reaction groove of the microchannel heat exchange tube through a circle of microchannel guide holes.

[0008] Furthermore, the drainage grooves on the guide plate are connected to the raw material feed pipe, and the raw materials are introduced into the drainage grooves through the raw material feed pipe.

[0009] Furthermore, two material guide trays are arranged inside the reactor cylinder, namely, the raw material A material guide tray and the raw material B material guide tray; the raw material A material guide tray and the raw material B material guide tray are arranged in parallel up and down, all the drainage grooves on the raw material A material guide tray are connected to the raw material A feed pipe, and all the drainage grooves on the raw material B material guide tray are connected to the raw material B feed pipe.

[0010] Furthermore, the exhaust port comprises a first exhaust port and a second exhaust port; the first exhaust port and the second exhaust port are symmetrically arranged on both sides of the upper end of the side wall of the reactor cylinder.

[0011] Furthermore, a plurality of cooling liquid inlet pipes are arranged in the reactor cylinder; the cooling liquid inlet pipes correspond to the microchannel heat exchange tubes one by one, and the cooling liquid inlet pipes extend vertically upward from the bottom into the microchannel heat exchange tube and extend to the inner top of the microchannel heat exchange tube; the bottom of the cooling liquid inlet pipe is the cooling liquid inlet.

[0012] Furthermore, a coolant storage cavity is fixedly arranged at the bottom of the reactor cylinder, and a coolant inlet cavity is fixedly arranged at the bottom of the coolant storage cavity; the coolant inlet at the bottom of the coolant inlet pipe is connected to the interior of the coolant inlet cavity; the lower end opening of the microchannel heat exchange tube is connected to the interior of the coolant storage cavity.

[0013] Furthermore, the coolant storage cavity is provided with a coolant discharge port; and the coolant inlet cavity is provided with a coolant inlet.

[0014] Furthermore, a reaction solution discharge port is provided on the lower side wall of the reactor cylinder.

[0015] Furthermore, heat exchange fins are carved on the inner wall of the microchannel heat exchange tube.

[0016] The beneficial effects of the present invention compared with the prior art are as follows:

[0017] The present invention uses a plurality of microchannels on the outer wall of the microchannel heat exchange tube as reaction tanks for solution chemical reactions, and the interior of the microchannel heat exchange tube as a heat exchange channel, which increases the contact area of ​​the solution, improves the heat exchange capacity, and achieves the dual effects of reaction heat exchange and exhaust. Since the microchannel is an open structure, the gas generated by the reaction substances in the microchannel will be directly discharged from the exhaust port of the reactor cylinder without causing pressure buildup; at the same time, the gas generated by the reaction can be separated from the reaction system in time, further promoting the positive reaction of the reaction system, greatly improving the chemical reaction rate, while reducing the generation of reaction by-products and improving the purity of the main product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the structure of the microfluidic channel reactor in Example 1;

[0020] Figure 2 Schematic diagram of the external structure of the microchannel heat exchange tube in Example 1 and Example 2;

[0021] Figure 3 Schematic diagram of the flow direction of the heat exchange fluid in the microchannel heat exchange tube in Example 1 and Example 2;

[0022] Figure 4 It is a schematic diagram of the structure of the microchannel reaction tank on the wall of the microchannel heat exchange tube in Example 1 and Example 2;

[0023] Figure 5 for Figure 4 A magnified cross-sectional view along the AA axis;

[0024] Figure 6 It is a schematic diagram of the position structure of the guide plate of the raw material A in Example 1 and Example 2;

[0025] Figure 7 It is a schematic diagram of the structure of the guide plate for raw material A in Example 1 and Example 2;

[0026] Figure 8 is a schematic structural diagram of the microchannel flash evaporator described in Example 2;

[0027] Fig. 9 It is a schematic diagram of the structure of the microchannel flash evaporators after series connection described in Example 2.

[0028] Among them, 1 is the feed pipe of raw material A, 2 is the feed pipe of raw material B, 3 is the guide plate of raw material A, 4 is the guide plate of raw material B, 5 is the first exhaust port, 6 is the second exhaust port, 7 is the microchannel heat exchange tube, 8 is the reactor cylinder, 9 is the reaction solution discharge port, 10 is the coolant inlet pipe, 11 is the coolant discharge port, 12 is the coolant storage cavity, 13 is the coolant inlet, 14 is the coolant inlet cavity, 15 is the microfluidic reaction tank, 16 is the distribution tank, 17 is the drainage tank, and 18 is the heat exchange fin. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail in conjunction with the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. The technical solutions of the present invention are described in detail below in conjunction with the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0030] Embodiment 1

[0031] like Figure 1 As shown in FIG. 7 , this embodiment provides a microfluidic reactor supporting exothermic and gas releasing reactions, including a reactor barrel 8, wherein the reactor barrel 8 is a vertically arranged hollow cylindrical structure.

[0032] A plurality of microchannel heat exchange tubes 7 are arranged in the reactor barrel 8. The microchannel heat exchange tubes 7 are hollow circular tubular structures arranged vertically. The upper end of the microchannel heat exchange tubes 7 remains closed, and the lower end of the microchannel heat exchange tubes 7 remains open. The inside of the microchannel heat exchange tubes 7 is used to pass heat exchange medium. A circle of microfluidic reaction grooves 15 arranged in a circular array are arranged on the outer wall of each microchannel heat exchange tube 7. The microfluidic reaction grooves 15 extend along the axial direction of the microchannel heat exchange tube 7; the microfluidic reaction grooves 15 are carved on the outer wall of the microchannel heat exchange tube 7, and the cross-section of the microfluidic reaction grooves 15 can have various forms such as triangles and rectangles. This structure makes the microfluidic reaction grooves 15 an open structure as a whole, and the microfluidic reaction grooves 15 are directly connected to the inner cavity of the reactor barrel 8.

[0033] The reactor cylinder 8 is provided with an exhaust port; the exhaust port includes a first exhaust port 5 and a second exhaust port 6; the first exhaust port 5 and the second exhaust port 6 are symmetrically arranged on both sides of the upper end of the side wall of the reactor cylinder 8, and the gas inside the reactor cylinder 8 is discharged to the outside of the reactor cylinder 8 through the first exhaust port 5 and the second exhaust port 6.

[0034] The microfluidic reaction tank 15 is used for the exothermic and degassing reaction. The gas generated by the exothermic and degassing reaction escapes from the microfluidic reaction tank 15 to the inside of the reactor cylinder 8, and can finally be directly discharged to the outside of the reactor cylinder 8 through the first exhaust port 5 and the second exhaust port 6. In this embodiment, the first exhaust port 5 and the second exhaust port 6 are connected to the exhaust device. Since the gas generated by the reaction can be discharged in a timely and large amount, the reactor cylinder 8 is in a negative pressure environment, which is more conducive to the exothermic and degassing reaction in the microfluidic reaction tank 15. In addition, the gas product is separated from the reaction system in time, avoiding the generation of secondary side reactions.

[0035] In order to improve the accuracy of feeding, the same material guide plate is connected to the top of several microchannel heat exchange tubes 7. The material guide plate is a horizontally arranged circular plate-like structure, and a plurality of circular plug holes that penetrate up and down are arranged on the material guide plate. The number of the plug holes is equal to the number of microchannel heat exchange tubes 7 and corresponds one to one. The upper end of the microchannel heat exchange tube 7 is plugged into the corresponding plug hole, and the outer wall of the microchannel heat exchange tube 7 is in contact with the inner wall of the plug hole. A coaxial annular distribution groove 16 is arranged on the outside of each plug hole of the material guide plate, and a circle of microchannel guide holes arranged in a circular array is arranged on the side wall between the distribution groove 16 and the plug hole. The number of microchannel guide holes is equal to the number of microfluidic reaction grooves 15 on the microchannel heat exchange tube 7 and corresponds one to one. A plurality of drainage grooves 17 are arranged on the material guide plate, and the number of drainage grooves 17 is equal to the number of distribution grooves 16 and they are connected one to one. The reaction raw materials are introduced into each distribution groove 16 through the drainage groove 17 , and the distribution groove 16 introduces the reaction raw materials into each microchannel reaction groove 15 of the microchannel heat exchange tube 7 through a circle of microchannel guide holes.

[0036] Multiple guide plates can be set according to the number of reaction raw materials. Different reaction raw materials enter the distribution groove 16 from the drainage grooves 17 on different guide plates respectively. The reaction raw materials in the distribution groove 16 are introduced into each microfluidic reaction groove 15 from the microchannel guide holes to achieve rapid reaction.

[0037] In this embodiment, two guide trays are provided, namely, the raw material A guide tray 3 and the raw material B guide tray 4; the raw material A guide tray 3 and the raw material B guide tray 4 are arranged in parallel up and down, and are used to introduce the reaction raw materials A and the reaction raw materials B into the microfluidic reaction grooves 15 of all microchannel heat exchange tubes 7 respectively. All the drainage grooves 17 on the raw material A guide tray 3 are connected to the raw material A feed pipe 1, and all the drainage grooves 17 on the raw material B guide tray 4 are connected to the raw material B feed pipe 2. The two raw materials are introduced into the drainage grooves 17 of the raw material A guide tray 3 and the raw material B guide tray 4 respectively through the raw material A feed pipe 1 and the raw material B feed pipe 2, and the drainage grooves 17 introduce the raw materials into the distribution grooves 16, and then the distribution grooves 16 respectively flow the two raw materials into each microfluidic reaction groove 15 of the microchannel heat exchange tube 7 through a circle of microchannel guide holes.

[0038] Since some reactions are exothermic reactions, it is important to maintain an appropriate reaction temperature of the reaction system. The outer wall of the microchannel heat exchange tube 7 described in this embodiment is used for reaction. Then, directly introducing the coolant into the inner wall of the microchannel heat exchange tube 7 can greatly improve the heat exchange efficiency. Specifically, a plurality of coolant inlet pipes 10 are arranged in the reactor barrel 8; the coolant inlet pipes 10 correspond to the microchannel heat exchange tube 7 one by one, and the coolant inlet pipes 10 extend vertically upward from the bottom into the microchannel heat exchange tube 7 and extend to the inner top of the microchannel heat exchange tube 7. The bottom of the coolant inlet pipe 10 is the coolant inlet. The coolant enters from the bottom of the coolant inlet pipe 10 and flows out from the top of the coolant inlet pipe 10 to the inner top of the microchannel heat exchange tube 7 under the action of the pressure pump, and then flows down along the top of the inner wall of the microchannel heat exchange tube 7, thereby realizing heat exchange for the chemical reaction carried out on the outer wall of the microchannel heat exchange tube 7. In order to further improve the heat exchange efficiency, a plurality of heat exchange fins 18 are also engraved on the inner wall of the microchannel heat exchange tube 7.

[0039] A coolant storage cavity 12 is fixedly provided at the bottom of the reactor cylinder 8, and a coolant inlet cavity 14 is fixedly provided at the bottom of the coolant storage cavity 12. The coolant inlet at the bottom of the coolant inlet pipe 10 is connected to the inside of the coolant inlet cavity 14; the lower end opening of the microchannel heat exchange tube 7 is connected to the inside of the coolant storage cavity 12, and a circle of microfluidic reaction grooves 15 outside the microchannel heat exchange tube 7 does not extend to the inside of the coolant storage cavity 12. The coolant storage cavity 12 is provided with a coolant discharge port 11; the coolant inlet cavity 14 is provided with a coolant inlet port 13. A coolant circulation cooling channel is formed by the coolant storage cavity 12, the coolant inlet cavity 14, the coolant inlet pipe 10 and the internal channel of the microchannel heat exchange tube 7.

[0040] A reaction solution discharge port 9 is provided on the lower side wall of the reactor barrel 8 ; the reactants in the microfluidic reaction tank 15 flow down along the microfluidic reaction tank 15 and flow into the cavity of the reactor barrel 8 , and are finally discharged from the reaction solution discharge port 9 .

[0041] The microfluidic reactor supporting exothermic and degassing reactions described in this embodiment is suitable for reaction systems with gas generation and side reactions, and solves the problem that in existing microchannel reactors, the pressure of the reaction system increases or the by-products increase because the gas cannot be discharged from the reaction system in time or the discharge rate is low. In order to more easily understand the working principle of the microfluidic reactor proposed in this embodiment, this embodiment is described by taking the production of tributyl phosphate as an example:

[0042] In industry, tributyl phosphate is generally synthesized by direct esterification of phosphorus oxychloride and n-butanol. In order to inhibit the hydrogen chloride generated in the reaction from continuing to react with n-butanol and tributyl phosphate to form chlorobutane, it is usually necessary to control the reaction temperature very low. It is difficult for traditional kettle reactors to control the temperature below 10°C, and the yield of tributyl phosphate is difficult to exceed 85%;

[0043] The chemical reaction principle is to mix phosphorus oxychloride with alcohol and generate triester phosphate and hydrogen chloride after a three-stage esterification reaction. Taking the reaction of phosphorus oxychloride and butanol as an example, the main reaction equation is as follows:

[0044] POCl3+3C4H9OH→(C4H9O)3PO+3HCl;

[0045] At the same time, the following side reactions occur:

[0046] (C4H9O)3PO+HCl→(C4H9O)2POOH+C4H9Cl;

[0047] C4H9OH+HCl→C4H9Cl+H2O.

[0048] The key technical difficulty is that the organic esterification synthesis reaction is extremely exothermic, and it is difficult to control the reaction temperature in a traditional kettle reactor, which is prone to violent boiling. In addition, hydrogen chloride is difficult to be separated from the reaction system in large quantities and quickly, and the generation rate of by-products is high.

[0049] The microfluidic reactor proposed in this embodiment can solve the above problems:

[0050] Phosphorus oxychloride and n-butanol are fed into the raw material A guide plate 3 and the raw material B guide plate 4 through the raw material A feed pipe 1 and the raw material B feed pipe 2, respectively, and the phosphorus oxychloride and n-butanol enter the plurality of microchannel reaction grooves 15 arranged on the outer walls of the plurality of microchannel heat exchange tubes 7 through the distribution grooves 16 on the raw material A guide plate 3 and the raw material B guide plate 4, respectively; and a coolant flows through the inner wall of the microchannel heat exchange tube 7 to continuously exchange heat with the reaction liquid on the outer wall of the microchannel heat exchange tube 7, so as to quickly reduce the reaction temperature; at the same time, an air pump is connected to the first exhaust port 5 and the second exhaust port 6, and a negative pressure is formed in the reactor cylinder 8 under the action of the air pump, and the hydrogen chloride generated by the reaction escapes from the reaction system in the form of gas into the reactor cylinder 8 under the negative pressure environment, and is discharged from the first exhaust port 5 and the second exhaust port 6 in time, thereby suppressing the occurrence of side reactions involving hydrogen chloride. Phosphorus oxychloride and n-butanol react in the microfluidic reaction tank 15 and flow downward along the microfluidic reaction tank 15 under the action of gravity. Finally, the reaction products gather in the cavity of the reactor cylinder 8 and are discharged through the reaction solution discharge port 9.

[0051] Embodiment 2

[0052] like Figure 2-8 As shown, this embodiment proposes a microchannel flash evaporator, and its structure is different from the microfluidic reactor structure in Example 1 in that the microchannel flash evaporator has only one material guide plate, namely, the material guide plate 3 for raw material A, and the drainage groove 17 on the material guide plate 3 for raw material A is connected to the feed pipe 1 for raw material A; the other structures are the same. It can be understood that when the number of material guide plates is one, the microfluidic reactor described in Example 1 can be used as a microchannel flash evaporator and play the role of a flash evaporator. Its working principle is:

[0053] When purifying tributyl phosphate (containing a portion of ethanol), the tributyl phosphate to be purified is fed into the raw material A guide plate 3 through the raw material A feed pipe 1, the raw material A feed pipe 1 guides the tributyl phosphate to be purified into the inside of the drainage groove 17, the drainage groove 17 guides the tributyl phosphate to be purified into the inside of the distribution groove 16, and then the distribution groove 16 flows the tributyl phosphate to be purified into each microchannel reaction groove 15 of the microchannel heat exchange tube 7 through a circle of microchannel guide holes; and, 30-50° C. water flows through the inner wall of the microchannel heat exchange tube 7 as a heating medium, continuously heating the tributyl phosphate on the outer wall of the microchannel heat exchange tube 7, so that the ethanol mixed therein is evaporated; and discharged from the first exhaust port 5 and the second exhaust port 6.

[0054] See also Fig. 9 The microchannel flash evaporator can also be in the form of multi-stage series connection, which can effectively extend the flash evaporation path and improve the flash evaporation effect.

[0055] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A microfluidic reactor supporting exothermic and degassing reactions, characterized in that: The invention comprises a vertically arranged reactor cylinder (8), wherein a plurality of vertical microchannel heat exchange tubes (7) are arranged in the reactor cylinder (8), and a circle of microchannel reaction grooves (15) are arranged on the outer wall of each microchannel heat exchange tube (7), and the plurality of microchannels on the outer wall of the microchannel heat exchange tube (7) are used as reaction grooves for solution chemical reactions, and the microchannels are of an open structure; the tops of the plurality of microchannel heat exchange tubes (7) are connected to a same material guide plate, and a plurality of plug holes are arranged on the material guide plate, and the upper ends of the microchannel heat exchange tubes (7) are plugged into the corresponding plug holes, and a distribution groove (16) is arranged on the outer side of each plug hole of the material guide plate, and a circle of microchannel guide grooves (16) is arranged on the side wall between the distribution groove (16) and the plug hole. holes; a plurality of drainage grooves (17) are provided on the material guide plate, and the plurality of drainage grooves (17) are connected to the plurality of distribution grooves (16) in a one-to-one correspondence; the number of microchannel guide holes is equal to and one-to-one correspondence with the microfluidic reaction grooves (15) on the microchannel heat exchange tube (7); the reaction raw materials are introduced into the interior of each distribution groove (16) through the drainage grooves (17), and the distribution grooves (16) introduce the reaction raw materials into the interior of each microfluidic reaction groove (15) of the microchannel heat exchange tube (7) through a circle of microchannel guide holes; the reactor cylinder (8) is provided with an exhaust port, and the gas generated inside the microfluidic reaction groove (15) is directly discharged from the reactor cylinder (8) through the exhaust port; the interior of the microchannel heat exchange tube (7) is used to pass a heat exchange medium.

2. A microfluidic reactor supporting exothermic and degassing reactions according to claim 1, characterized in that: The drainage grooves (17) on the material guide plate are all connected to the raw material feed pipe, and the raw materials are introduced into the drainage grooves (17) through the raw material feed pipe.

3. A microfluidic reactor supporting exothermic and degassing reactions according to any one of claims 1 to 2, characterized in that: Two material guide plates are arranged inside the reactor barrel (8), namely a material guide plate (3) for raw material A and a material guide plate (4) for raw material B; the material guide plate (3) for raw material A and the material guide plate (4) for raw material B are arranged in parallel up and down, all the drainage grooves (17) on the material guide plate (3) for raw material A are connected to the material feed pipe (1), and all the drainage grooves (17) on the material guide plate (4) for raw material B are connected to the material feed pipe (2).

4. A microfluidic reactor supporting exothermic and degassing reactions according to claim 1, characterized in that: The exhaust port comprises a first exhaust port (5) and a second exhaust port (6); the first exhaust port (5) and the second exhaust port (6) are symmetrically arranged on both sides of the upper end of the side wall of the reactor barrel (8).

5. A microfluidic reactor supporting exothermic and degassing reactions according to claim 1, characterized in that: A plurality of cooling liquid inlet pipes (10) are arranged in the reactor barrel (8); the cooling liquid inlet pipes (10) correspond to the microchannel heat exchange pipes (7) one by one, and the cooling liquid inlet pipes (10) extend vertically upward from the bottom into the microchannel heat exchange pipe (7) and extend to the inner top of the microchannel heat exchange pipe (7); the bottom of the cooling liquid inlet pipe (10) is a cooling liquid inlet.

6. A microfluidic reactor supporting exothermic and degassing reactions according to claim 5, characterized in that: A cooling liquid storage cavity (12) is fixedly arranged at the bottom of the reactor cylinder (8), and a cooling liquid inlet cavity (14) is fixedly arranged at the bottom of the cooling liquid storage cavity (12); the cooling liquid inlet at the bottom of the cooling liquid inlet pipe (10) is connected to the interior of the cooling liquid inlet cavity (14); and the lower end opening of the microchannel heat exchange tube (7) is connected to the interior of the cooling liquid storage cavity (12).

7. A microfluidic reactor supporting exothermic and degassing reactions according to claim 6, characterized in that: The coolant storage cavity (12) is provided with a coolant discharge port (11); and the coolant inlet cavity (14) is provided with a coolant inlet port (13).

8. A microfluidic reactor supporting exothermic and degassing reactions according to claim 1, characterized in that: A reaction solution discharge port (9) is provided on the lower side wall of the reactor cylinder (8).

9. A microfluidic reactor supporting exothermic and degassing reactions according to claim 1, characterized in that: Heat exchange fins (18) are carved on the inner wall of the microchannel heat exchange tube (7).

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