CN111389325A

CN111389325A - Novel micro-channel reactor

Info

Publication number: CN111389325A
Application number: CN202010361523.4A
Authority: CN
Inventors: 李鹏飞; 杨茜; 黄长如; 刁焕武; 张秋达
Original assignee: Shandong Microwell Chemical Technology Co ltd
Current assignee: Shandong Microwell Chemical Technology Co ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-07-10

Abstract

The invention provides a novel microchannel reactor, wherein different reactants are introduced into more than two feed inlets, and enter a reaction channel through corresponding reaction ports to be mixed; after the reaction, the reaction product is input into the reaction body through the output port. While inputting the reactant, introducing a heat exchange medium into the first heat exchange inlet to supply heat to the reaction; after heat supply, the heat is discharged along the paths of the second heat exchange outlet, the third heat exchange outlet and the first heat exchange outlet. Because in the use, usually accompany the change of temperature, material itself can take place to expand or contract under the temperature variation, consequently, has set up tensioning portion in retaining member one end, through adjusting the elasticity between each material, has guaranteed that the reactor can not take place the phenomenon of leaking under the condition of temperature fluctuation yet. Meanwhile, through the structural design of the scheme, the pressure-resistant range of the tetrafluoro microchannel reactor can be increased to be the same as that of a metal material, and the pressure resistance of the reactor can reach 4MPa at normal temperature.

Description

Novel micro-channel reactor

Technical Field

The invention relates to the field of chemical reaction equipment, in particular to a novel microchannel reactor.

Background

Microchannel reactors, i.e. microreactors, are three-dimensional structural elements which can be used for carrying out chemical reactions and which are produced in a solid matrix by means of special microfabrication techniques, the internal structure of which contains a multiplicity of small-sized channels and a multiplicity of channels. During the reaction, the fluid flows in these channels and the desired reaction is carried out. Has a very large surface area/volume ratio for the chemical reaction process, which is beneficial to increasing the chemical generation rate.

In the production process of fine chemical engineering, strong corrosive media are usually accompanied, and the process of fine chemical engineering products is updated quickly, so that the microchannel reactor is required to have a wider application range and better corrosion resistance. However, the materials of the microchannel reactor in the market at present mainly include glass, silicon carbide and noble metals (such as rare metals like titanium, tantalum, zirconium, etc.), but there is still a great limitation. Such as: although the microchannel reactor made of glass and silicon carbide has better corrosion resistance, the microchannel reactor is fragile and cannot bear high pressure, the pressure is only 2MPa usually, and the glass and the silicon carbide are brittle materials, so that once equipment generates overpressure, a reaction sheet can be directly broken, and danger is easy to occur. The microchannel reactor made of metal material has good heat-conducting property, but has limited corrosion resistance, such as stainless steel which is not resistant to hydrofluoric acid, wet chlorine gas, hydrochloric acid gas and the like, monel which is not resistant to nitric acid, hydrochloric acid, sulfuric acid in high concentration or boiling state, titanium which is not resistant to corrosion of purer reducing acid and hydrochloric acid and the like, tantalum material and zirconium material which have good corrosion resistance but high price which is at least 10 times of that of stainless steel.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a novel micro-channel reactor which has high corrosion resistance and high pressure resistance and ensures that the chemical reaction is stably carried out.

The invention adopts the following technical scheme:

a novel microchannel reactor, comprising: the heat exchanger comprises a first sealing plate and a second sealing plate, wherein the first sealing plate and the second sealing plate are oppositely arranged at intervals, a first heat exchange inlet, a first heat exchange outlet and at least two feed inlets are formed in the first sealing plate, and a heat exchange channel and a discharge outlet are formed in one side surface, facing the first sealing plate, of the second sealing plate; the mixing plate is attached to one side face, facing the second sealing plate, of the first sealing plate, and is provided with an output port, a reaction channel, a second heat exchange inlet communicated with the first heat exchange inlet, a second heat exchange outlet communicated with the first heat exchange outlet, and reaction ports respectively corresponding to the feed ports and communicated with the opposite ends of the reaction channel; the reaction body is attached between the mixing plate and the second sealing plate, a third heat exchange inlet and a third heat exchange outlet are arranged on the reaction body, the third heat exchange inlet is respectively communicated with the second heat exchange outlet and the other end of the first heat exchange channel, the third heat exchange outlet is respectively communicated with the second heat exchange outlet and the other end of the first heat exchange channel, and the reaction body is used for receiving the mixed liquid and the heat exchange medium output by the mixing plate and enabling the mixed liquid to react; retaining member, the retaining member runs through first shrouding the mixing plate the reaction body reaches the second shrouding, and will first shrouding the mixing plate the reaction body reaches the locking of second shrouding is in the same place, retaining member one end is equipped with tensioning portion, tensioning portion one end is contradicted on the second shrouding, tensioning portion is used for the elasticity to adjust first shrouding the mixing plate the reaction body reaches rate of tension between the second shrouding.

In one embodiment, the tensioning portion is a rectangular spring, the rectangular spring is sleeved on the locking member, one end of the rectangular spring abuts against the second sealing plate, and the other end of the rectangular spring abuts against a nut of the locking member.

In one embodiment, the novel microchannel reactor further comprises at least two hollow screws, and the hollow screws are communicated with the feed inlets in a one-to-one correspondence manner.

In one embodiment, the number of the feed inlets, the number of the hollow screws and the number of the reaction ports are two, the two hollow screws are in one-to-one correspondence communication with the two feed inlets, and the two feed inlets are in one-to-one correspondence communication with the two reaction ports.

In one embodiment, the reaction body includes a separation plate and a reaction plate stacked in sequence, one of the reaction channel and the heat exchange channel is respectively disposed on two opposite side surfaces of the reaction plate, the separation plate is separated between the reaction channel and the heat exchange channel, the reaction plate and the separation plate are both provided with communication ports, the reaction channels in the reaction body are all sequentially communicated through the communication ports, and the heat exchange channels in the reaction body are all communicated with the third heat exchange inlet and the third heat exchange outlet.

In one embodiment, the reaction plates are divided into odd reaction plates and even reaction plates, the odd reaction plates, the partition plates, the even reaction plates and the partition plates are sequentially stacked and circularly arranged, and the heat exchange channels and the reaction channels are respectively arranged on both sides of the odd reaction plates and both sides of the even reaction plates.

In one embodiment, the reaction plate is a modified polytetrafluoroethylene plate.

In one embodiment, the novel microchannel reactor further comprises a positioning plate, wherein the positioning plate is arranged on the reaction body, and two ends of the positioning plate are respectively connected with the first sealing plate and the second sealing plate.

In one embodiment, the positioning plate is provided with a temperature measuring port for inserting a thermocouple to measure the temperature of the reaction body.

In one embodiment, the novel microchannel reactor further comprises a base, and the first sealing plate, the mixing plate, the reactant body, and the second sealing plate are disposed on the base.

The invention has the beneficial effects that:

in the reaction process, different reactants are respectively introduced into more than two feed inlets, and enter the reaction channel through the corresponding reaction ports to be mixed and pre-reacted; the reacted materials are input into the reaction body through an output port. The reaction body is used for receiving the mixed liquid and the heat exchange medium output by the mixing plate and enabling the mixed liquid to carry out chemical reaction, so that the mixed liquid flowing into the reaction body carries out multi-stage reaction; after the reaction, the reactant is discharged from a discharge port on the second sealing plate; when the reactant is input, a heat exchange medium is also introduced into the first heat exchange inlet, so that the heat exchange medium enters the reaction body and supplies heat to the reaction; after heat supply, the heat is discharged along the path between the third heat exchange outlet and the first heat exchange outlet or between the second heat exchange outlet, the third heat exchange outlet and the first heat exchange outlet. Because in the use, usually accompany the change of temperature, material itself can take place to expand or contract under the temperature variation, consequently, has set up tensioning portion in retaining member one end, through adjusting the elasticity between each material, has guaranteed that the reactor can not take place the phenomenon of leaking under the condition of temperature fluctuation yet. Meanwhile, through the structural design of the scheme, the pressure-resistant range of the tetrafluoro microchannel reactor can be increased to be the same as that of a metal material, and the pressure resistance of the reactor can reach 4MPa at normal temperature.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a perspective view of a microchannel reactor configuration;

FIG. 2 is another perspective view of a microchannel reactor configuration;

FIG. 3 is a side view of the first sealing plate;

FIG. 4 is a schematic side view of the mixing plate;

FIG. 5 is another side view of the mixing plate;

FIG. 6 is a schematic view of a side structure of the partition plate;

FIG. 7 is a schematic side view of an odd number of reaction plates;

FIG. 8 is a schematic view of another side structure of an odd number of reaction plates;

FIG. 9 is a schematic side view of an even number of reaction plates;

FIG. 10 is a schematic side view of an even number of reaction plates;

FIG. 11 is a side view of the second sealing plate;

FIG. 12 is a schematic view of another side view of the second closure plate;

fig. 13 is a side view of the positioning plate.

The reference numbers illustrate:

100 is a microchannel reactor, 110 is a first sealing plate, 111 is a first heat exchange inlet, 112 is a first heat exchange outlet, 113 is a feed inlet, 120 is a second sealing plate, 121 is a discharge outlet, 130 is a mixing plate, 131 is a reaction port, 132 is an output port, 133 is a second heat exchange inlet, 134 is a second heat exchange outlet, 140 is a reaction body, 141 is a separation plate, 142 is a reaction plate, 1421 is an odd reaction plate, 1422 is an even reaction plate, 1423 is a communication port, 1424 is a third heat exchange inlet, 1425 is a third heat exchange outlet, 150 is a positioning plate, 151 is a temperature measuring port, 160 is a base, 170 is a locking member, 171 is a tensioning portion, 172 is an installation hole, 180 is a reaction channel, 181 is a reaction section, 190 is a heat exchange channel, and 191 is a flow guide column.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In one embodiment, referring to fig. 1 to 13, a novel microchannel reactor 100 includes: the first sealing plate 110 and the second sealing plate 120 are arranged oppositely at intervals, the first sealing plate 110 is provided with a first heat exchange inlet 111, a first heat exchange outlet 112 and at least two feed inlets 113, and one side surface of the second sealing plate 120 facing the first sealing plate 110 is provided with a heat exchange channel 190 and a discharge outlet 121; the mixing plate 130 is attached to one side surface of the first sealing plate 110 facing the second sealing plate 120, the mixing plate 130 is provided with an output port 132, a reaction channel 180, a second heat exchange inlet 133 communicated with the first heat exchange inlet 111, a second heat exchange outlet 134 communicated with the first heat exchange outlet 112, and reaction ports 131 respectively communicated with the feed port 113 correspondingly, and the reaction ports 131 and the output port 132 are respectively communicated with two opposite ends of the reaction channel 180; the reaction body 140, the reaction body 140 is attached between the mixing plate 130 and the second closing plate 120, the reaction body 140 is provided with a third heat exchange inlet 1424 and a third heat exchange outlet 1425, the third heat exchange inlet 1424 is respectively communicated with the second heat exchange outlet 134 and the other end of the first heat exchange channel 190, the third heat exchange outlet 1425 is respectively communicated with the second heat exchange outlet 134 and the other end of the first heat exchange channel 190, and the reaction body 140 is configured to receive the mixed liquid and the heat exchange medium output by the mixing plate 130, and enable the mixed liquid to react; retaining member 170, retaining member 170 run through first shrouding 110, mixing plate 130, reactant 140 and second shrouding 120 to with first shrouding 110, mixing plate 130, reactant 140 and second shrouding 120 locking together, retaining member 170 one end is equipped with tensioning portion 171, and tensioning portion 171 one end is contradicted on second shrouding 120, and tensioning portion 171 is used for the elasticity to adjust the rate of tension between first shrouding 110, mixing plate 130, reactant 140 and the second shrouding 120.

In the novel microchannel reactor 100, different reactants are respectively introduced into the two or more feed inlets 113 during the reaction process, and the different reactants enter the reaction channel 180 through the corresponding reaction ports 131 to be mixed and pre-reacted; the reacted material is introduced into the reaction body 140 through the outlet 132. Since the reaction body 140 is configured to receive the mixed liquid and the heat exchange medium output by the mixing plate 130 and enable the mixed liquid to perform a chemical reaction, the mixed liquid flowing into the reaction body 140 performs a multi-stage reaction; after the reaction, the reactant is discharged from the discharge hole 121 on the second sealing plate 120; while inputting the reactant, introducing a heat exchange medium into the first heat exchange inlet 111, so that the heat exchange medium enters the reaction body 140 and supplies heat to the reaction; after supplying heat, the heat is discharged along the paths between the third heat exchange outlet 1425 and the first heat exchange outlet 112, or between the second heat exchange outlet 134, the third heat exchange outlet 1425 and the first heat exchange outlet 112. Since the material itself expands or contracts due to the temperature change, which is usually accompanied by the temperature change during the use, the tightening part 171 is provided at one end of the locking member 170, and the reactor 100 is ensured not to leak due to the temperature fluctuation by adjusting the tightness between the materials. Meanwhile, through the structural design of the scheme, the pressure-resistant range of the tetrafluoro microchannel reactor 100 can be increased to be the same as that of a metal material, and the pressure resistance of the reactor 100 can reach 4MPa at normal temperature.

Specifically, the first heat exchange outlet 112 and the first heat exchange inlet 111 are distributed on the first sealing plate 110 from top to bottom, that is, the first heat exchange inlet 111 is located below the first heat exchange outlet 112, so that the flowing direction of the heat exchange medium is from bottom to top and forms a counter flow with the flowing direction of the reactant, thereby enhancing the heat exchange effect between the heat exchange medium and the reactant. Similarly, second heat exchange outlet 134 and second heat exchange inlet 133 are distributed up and down on mixing plate 130.

Further, the tensioning portion 171 is a rectangular spring, the rectangular spring is sleeved on the locking member 170, one end of the rectangular spring abuts against the second sealing plate 120, and the other end of the rectangular spring abuts against the nut of the locking member 170. Thus, the reactor 100 is ensured to react more stably. In other embodiments, the tensioning portion 171 may also be a multi-layered stacked washer.

In one embodiment, a novel microchannel reactor 100 further comprises at least two cannulated screws. The hollow screws are communicated with the feed ports 113 in a one-to-one correspondence. Thus, the reactants are conveniently introduced into the feed port 113 by the hollow screw.

Further, the number of the feed inlets 113, the number of the hollow screws and the number of the reaction ports 131 are two, the two hollow screws are in one-to-one correspondence communication with the two feed inlets 113, and the two feed inlets 113 are in one-to-one correspondence communication with the two reaction ports 131. Of course, in other embodiments, the feed port 113, the hollow screw and the reaction port 131 are three or more, and in this case, there are three or more reactants.

In one embodiment, the reaction body 140 includes a separation plate 141 and a reaction plate 142 stacked in sequence, two opposite sides of the reaction plate 142 are respectively provided with one of the reaction channel 180 and the heat exchange channel 190, the separation plate 141 is disposed between the reaction channel 180 and the heat exchange channel 190, the reaction plate 142 and the separation plate 141 are both provided with a communication port 1423, the reaction channels 180 in the reaction body 140 are both sequentially communicated through the communication ports 1423, and the heat exchange channels 190 in the reaction body 140 are both communicated with the third heat exchange inlet 1424 and the third heat exchange outlet 1425. Since the reaction body 140 is formed by sequentially stacking the plurality of partition plates 141 and the reaction plates 142, and the reaction channels 180 in the reaction body 140 are sequentially communicated through the communication port 1423, the mixed liquid flowing into the reaction body 140 sequentially enters the corresponding reaction channels 180 through the communication port 1423 to perform a multi-stage reaction; after the reaction, the reactant is discharged from the discharge hole 121 on the second sealing plate 120; when the reactant is input, the heat exchange medium is also introduced into the first heat exchange inlet 111, so that the heat exchange medium enters the heat exchange channels 190 of different levels, and because the partition plate 141 is arranged between the heat exchange channels 190 and the reaction channel 180, the heat exchange medium in the heat exchange channels 190 supplies heat to the reaction through the partition plate 141.

It should be noted that, in this embodiment, the distribution sequence of the channel types in the reaction body 140 is not specifically limited, and it only needs to satisfy that the two sides of the partition plate 141 are the heat exchange channel 190 and the reaction channel 180, for example: the distribution of channels within the reaction body 140 may be: the heat exchange channel 190, the reaction channel 180, the heat exchange channel 190, the reaction channels 180, … …, the reaction channel 180; or, the heat exchange channel 190, the reaction channel 180, the heat exchange channels 190, … …, the reaction channel 180; still alternatively, heat exchange channels 190, reaction channels 180, heat exchange channels 190, reaction channels 180, … …, reaction channels 180, and the like. The channels at the outermost sides in the reaction body 140 are the heat exchange channels 190 and the reaction channels 180, respectively, because the mixing plate 130 and the second sealing plate 120 at the two sides of the reaction body 140 are provided with the reaction channels 180 and the heat exchange channels 190, respectively.

Further, the reaction plate 142 is divided into an odd number reaction plate 1421 and an even number reaction plate 1422, the odd number reaction plate 1421, the partition plate 141, the even number reaction plate 1422 and the partition plate 141 are sequentially stacked and circularly disposed, and both side surfaces of the odd number reaction plate 1421 and both side surfaces of the even number reaction plate 1422 are respectively provided with the heat exchange channel 190 and the reaction channel 180. Therefore, the distribution sequence of the channel types in the reaction body 140 of the present embodiment is: the heat exchange channel 190, the reaction channel 180, the heat exchange channel 190, the reaction channels 180, … … and the reaction channel 180, so that the heat supply of the reaction is more uniform and stable.

In one embodiment, the reaction plate 142 and the separation plate 141 are made of corrosion-resistant and pressure-resistant materials, so that the sealing failure in the reaction body 140 caused by the corrosion of the mixed liquid is effectively avoided; meanwhile, the direct breakage of the reaction body 140 caused by overpressure of the equipment is effectively avoided, and chemical reaction accidents are avoided, so that the reaction stability and reliability of the reactor 100 are greatly improved, and the stable and continuous reaction is ensured. In addition, this embodiment all designs reaction plate 142 and division plate 141 for corrosion-resistant, crushing-resistant material, is favorable to two adjacent plate holders tighter for sealing performance in the reaction body 140 is better, effectively avoids the phenomenon that fluid takes place to cross liquid or take place the hydrops in the face.

It should be noted that corrosion-resistant and pressure-resistant materials are to be understood as: the material can resist corrosion of hydrochloric acid, concentrated nitric acid, concentrated sulfuric acid and strong alkali, and meanwhile, when the equipment is used for reaction, when the internal pressure reaches a preset pressure value, the reaction body 140 cannot be pressed to crack. Wherein, the pressure preset value can be set according to the actual reaction, such as: the predetermined pressure may be 5bar to 25 bar.

Alternatively, the reaction plate 142 may be modified polytetrafluoroethylene, polyperfluoroethylpropylene, polyphenylene sulfide, polyphenylene oxide, or the like.

Further, the reaction plate 142 is a modified teflon plate. Thus, the acid and alkali corrosion resistance and the pressure resistance of the reaction body 140 are greatly improved. Of course, in other embodiments, the reaction plate 142 may also be a teflon plate; the partition plate 141 is made of a corrosion-resistant metal such as tantalum or zirconium to ensure heat transfer.

The modified polytetrafluoroethylene is a non-metallic material which has low friction coefficient, wear resistance, high temperature and stable compression under high pressure (45MPa) and is obtained by changing the molecular chain structure of the polytetrafluoroethylene.

In one embodiment, a novel microchannel reactor 100 further comprises a positioning plate 150. The positioning plate 150 is disposed on the reaction body 140, and two ends of the positioning plate are respectively connected to the first sealing plate 110 and the second sealing plate 120. Thus, the structure of the reactor 100 is more stable by the positioning plate 150.

In one embodiment, the positioning plate 150 is provided with a temperature measuring port 151, and the temperature measuring port 151 is used for inserting a thermocouple to measure the temperature of the reaction body 140. In this manner, during the reaction, the thermocouple is inserted into the temperature measuring port 151, and the reaction temperature in the reaction body 140 is constantly grasped so that the reaction proceeds at a predetermined temperature.

In one embodiment, the novel microchannel reactor 100 further comprises a base 160, and the first cover plate 110, the mixing plate 130, the reactant body 140, and the second cover plate 120 are disposed on the base 160. Thus, the structure of the reactor 100 is more stable by the base 160.

In one embodiment, the reaction channel 180 includes a plurality of reaction sections 181 connected end to end, and during the actual manufacturing process, the reaction channel 180 is distributed in an S-shape. Meanwhile, a plurality of guide columns 191 distributed at intervals are arranged in the heat exchange channel 190, and the guide columns 191 uniformly scatter the heat exchange medium, so that heat is uniformly distributed on the whole heat exchange surface and is used for exchanging heat for the reaction materials on two sides.

In one embodiment, the first cover plate 110 is provided with mounting holes 172, the mounting holes 172 are disposed through the first cover plate 110, the mixing plate 130, the reaction body 140 and the second cover plate 120, and the locking members 170 are inserted into the mounting holes 172. Specifically, the locking member 170 is a bolt.

It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.

Claims

1. A novel microchannel reactor, comprising:

the heat exchanger comprises a first sealing plate and a second sealing plate, wherein the first sealing plate and the second sealing plate are oppositely arranged at intervals, a first heat exchange inlet, a first heat exchange outlet and at least two feed inlets are formed in the first sealing plate, and a heat exchange channel and a discharge outlet are formed in one side surface, facing the first sealing plate, of the second sealing plate;

the mixing plate is attached to one side face, facing the second sealing plate, of the first sealing plate, and is provided with an output port, a reaction channel, a second heat exchange inlet communicated with the first heat exchange inlet, a second heat exchange outlet communicated with the first heat exchange outlet, and reaction ports respectively corresponding to the feed ports and communicated with the opposite ends of the reaction channel;

the reaction body is attached between the mixing plate and the second sealing plate, a third heat exchange inlet and a third heat exchange outlet are arranged on the reaction body, the third heat exchange inlet is respectively communicated with the second heat exchange outlet and the other end of the first heat exchange channel, the third heat exchange outlet is respectively communicated with the second heat exchange outlet and the other end of the first heat exchange channel, and the reaction body is used for receiving the mixed liquid and the heat exchange medium output by the mixing plate and enabling the mixed liquid to react; and

retaining member, the retaining member runs through first shrouding the mixing plate the reaction body reaches the second shrouding, and will first shrouding the mixing plate the reaction body reaches the locking of second shrouding is in the same place, retaining member one end is equipped with tensioning portion, tensioning portion one end is contradicted on the second shrouding, tensioning portion is used for the elasticity to adjust first shrouding the mixing plate the reaction body reaches rate of tension between the second shrouding.

2. The novel microchannel reactor of claim 1, wherein the tensioning portion is a rectangular spring, the rectangular spring is sleeved on the locking member, one end of the rectangular spring abuts against the second sealing plate, and the other end of the rectangular spring abuts against a nut of the locking member.

3. The novel microchannel reactor of claim 1, further comprising at least two cannulated screws, wherein the cannulated screws communicate with the feed ports in a one-to-one correspondence.

4. The novel microchannel reactor of claim 3, wherein the number of the feed inlets, the hollow screws and the reaction ports is two, two of the hollow screws are in one-to-one communication with the two feed inlets, and two of the feed inlets are in one-to-one communication with the two reaction ports.

5. The novel microchannel reactor according to claim 1, wherein the reaction body comprises a separation plate and a reaction plate stacked in sequence, the reaction plate has one of the reaction channel and the heat exchange channel on opposite sides thereof, the separation plate is disposed between the reaction channel and the heat exchange channel, the reaction plate and the separation plate are both provided with communication ports, the reaction channels in the reaction body are both sequentially communicated through the communication ports, and the heat exchange channels in the reaction body are both communicated with the third heat exchange inlet and the third heat exchange outlet.

6. The novel microchannel reactor of claim 5, wherein the reaction plates are odd number reaction plates and even number reaction plates, the odd number reaction plates, the separation plates, the even number reaction plates and the separation plates are sequentially stacked and circularly arranged, and the heat exchange channels and the reaction channels are respectively arranged on both sides of the odd number reaction plates and both sides of the even number reaction plates.

7. The novel microchannel reactor of claim 5, wherein the reactor plate is a modified polytetrafluoroethylene plate.

8. The novel microchannel reactor of claim 1, further comprising a positioning plate disposed on the reactor body and having two ends connected to the first sealing plate and the second sealing plate, respectively.

9. The novel microchannel reactor of claim 8, wherein the positioning plate is provided with a temperature measuring port for inserting a thermocouple to measure the temperature of the reaction body.

10. The novel microchannel reactor of any one of claims 1-9, further comprising a base, wherein the first cover plate, the mixing plate, the reactant body, and the second cover plate are disposed on the base.