WO2023019718A1

WO2023019718A1 - Block-hole type silicon carbide microreactor and use thereof

Info

Publication number: WO2023019718A1
Application number: PCT/CN2021/124995
Authority: WO
Inventors: 闫永杰; 姚玉玺
Original assignee: 南通三责精密陶瓷有限公司
Priority date: 2021-08-18
Filing date: 2021-10-20
Publication date: 2023-02-23
Also published as: DE112021000133T5; CN113546590A

Abstract

The present application relates to a block-hole type silicon carbide microreactor and use thereof, which relate to the field of chemical heat exchange. The block-hole type silicon carbide microreactor comprises a matrix block and a sealing plate, wherein the matrix block is provided with at least one material guide channel for input and output of a fluid medium and at least one heat exchange channel for input and output of a heat exchange medium; a plurality of sets of through holes are provided in the sealing plate, and the sealing plate is fixed to the matrix block in a sealed manner, such that the through holes are in communication with the material guide channel, or with both the material guide channel and the heat exchange channel; and the block-hole type silicon carbide microreactor is used for mixing and/or heat exchange of the fluid medium. The present application has the effect of ensuring that the silicon carbide microreactor maintains high throughput under a high temperature and high pressure environment.

Description

A block hole type silicon carbide microreactor and its application

technical field

The application relates to the field of chemical heat exchange, in particular to a block-hole silicon carbide microreactor and its application.

Background technique

A microreactor is a device that has a large number of micron-scale channels on a solid substrate through precision machining technology. The microreactor can be used not only for the mixing of fluid media, but also for the rapid heat exchange of fluid media. Among them, silicon carbide microreactors are often used for mixing and heat exchange of chemical fluid media due to their fast heat transfer speed and strong corrosion resistance.

In practical applications, silicon carbide reactors are basically two types: tubular microreactors and plate microreactors.

For the related technologies mentioned above, the inventor believes that there are the following defects: the tube microreactor has poor high temperature and high pressure resistance, and the plate microreactor has limited flux; in practical applications, in order to meet the reaction requirements, operators often have to increase The number of microreactors greatly increases the cost of maintaining the reaction.

Contents of the invention

In order to improve the problem that ordinary microreactors are difficult to maintain high throughput under high temperature and high pressure, the application provides a block-hole silicon carbide microreactor and its application.

In the first aspect, a block hole type silicon carbide microreactor provided by the application adopts the following technical scheme:

A block hole type silicon carbide microreactor, comprising a matrix block and a sealing plate; the matrix block is provided with at least one material guide channel for fluid medium in and out and at least one for heat exchange medium in and out Heat exchange channels; the sealing plate is provided with multiple groups of through holes, and the sealing plate is sealed and fixed on the matrix block, so that the through holes communicate with the material guide channel or communicate with the material guide channel and the heat exchange channel at the same time.

By adopting the above technical scheme, the substrate block and sealing plate made of silicon carbide have a stable structure, high temperature and high pressure tolerance, and can be stably applied in harsh environments; The operation of feeding the fluid medium into the block is simple; after packaging, the sealing pressure between the sealing plate and the matrix block is high, which can ensure the mixing of the fluid medium in the equipment and the stability of heat exchange; in addition, the matrix block and sealing plate made of silicon carbide are durable Strong acidity and alkalinity, suitable for the introduction of highly acidic and alkaline chemical fluid media for mixing and heat exchange; the inner diameter of the material guide channel can be adjusted to a larger size according to the application requirements, which satisfies the need to expand the flux of the fluid medium in the material guide channel need.

Preferably, the matrix block includes a reaction block and a side plate; the heat exchange channel and the material guide channel are both arranged on the reaction block, the sealing plate is sealed and fixed on one side of the reaction block, and the side plate is sealed and fixed on The side of the reaction block away from the sealing plate.

By adopting the above technical scheme, the specific surface area of the serpentine spiral guide channel is large, and the contact area with the heat exchange channel is also greatly increased, which improves the mixing efficiency and heat exchange efficiency of the fluid medium in the reaction block; the side plate and the sealing plate are used It is used to block the transfer groove and the reversing groove, which can ensure the stability and efficiency of the flow of the fluid medium in the material guide channel.

Preferably, the material guide channel is straight, spiral or grooved.

By adopting the above-mentioned technical scheme, the straight-line material guide channel is convenient for the fluid medium to pass through quickly, and the heat exchange efficiency of the fluid medium in the reaction block can be guaranteed through the characteristics of the large specific surface area of the material guide channel; The feed channel extends the length of the flow channel, which prolongs the heat exchange time between the fluid medium and the heat exchange medium, and improves the heat exchange efficiency of the equipment for the fluid medium; in addition, the spiral groove and the step groove slow down the flow of the fluid medium in the flow channel. The flow speed improves the flow stability of the fluid medium in the guide channel.

Preferably, the arrangement direction of the material guide channel and the heat exchange channel is the same or different.

By adopting the above technical scheme, when the arrangement directions of the material guide channel and the heat exchange channel are different, the number of heat exchange channels is far more than that of the material guide channel, and the flowing heat exchange medium can be continuously fed into each heat exchange channel , which improves the heat exchange efficiency and speed of the reaction block to the fluid medium; in addition, the through hole of the sealing plate only leads to the fluid medium, which is easy to operate and is not easy to mistakenly lead the heat exchange medium into the material guide channel; the material guide channel and When the heat exchange channels are arranged in the same direction, the number of heat exchange channels and material guide channels is relatively balanced, and all the flow channels of the two are in a state parallel to each other, so that the fluid medium and the heat exchange medium are easy to fully exchange heat, and the fluid medium The heat exchange efficiency in the reaction block is guaranteed; in addition, the space utilization rate in the reaction block is high, and the phenomenon of redundant openings is reduced.

Preferably, the material guide channel and the heat exchange channel include a plurality of flow channels, and all the flow channels on the same plane together form a group of row channels; two adjacent flow channels communicate through transfer grooves, and adjacent The two groups of roadways are communicated through reversing slots.

By adopting the above technical scheme, all the flow channels together form the material guide channel and the heat exchange channel, the transfer groove realizes the connection of the adjacent flow channels, and the reversing groove realizes the connection of the adjacent row channels, which ensures that the heat exchange medium and the fluid medium are in the reaction state. Circulation smoothness on the block.

Preferably, multiple sets of diversion grooves are provided on the side wall of the reaction block, and the diversion grooves are used for different lanes of parallel-connected material guide channels and/or used for different lanes of parallel-connected heat exchange channels.

By adopting the above technical scheme, when the diverting groove is used to connect two or more groups of reversing grooves, it is convenient for the fluid medium to enter multiple groups of reversing grooves at the same time, so that the upper and lower adjacent lanes are connected in parallel at the same time, which improves the efficiency of the fluid medium entering the material guide channel. The speed helps to improve the mixing and heat exchange efficiency of the equipment for the fluid medium; the diversion groove can be used to connect a group of reversing grooves to increase the inner diameter of the reversing groove, so that the heat exchange medium in the through hole can be Arrives into the independent reversing groove, and quickly shunts the flow into the upper and lower adjacent passages, which speeds up the entry speed of the heat exchange medium in the heat exchange channel.

Preferably, the reaction block is provided with at least one set of internal members for slowing down the flow velocity of the fluid medium in the material guide channel, and the internal members are interference fit between the side plate and the sealing plate.

By adopting the above technical solution, the inner member is used to slow down the flow velocity of the fluid medium in the material guide channel; the inner member pressed between the side plate and the sealing plate is used to reduce the looseness, looseness, and looseness of the inner member in the material guide channel. The phenomenon of deflection helps to improve the flow stability of the fluid medium in the material guide channel.

Preferably, the inner member includes an orientation column and a plurality of isolation plates; all the isolation plates are distributed on the outer edge of the orientation column at intervals, and at least one set of passages for the fluid medium to pass through is provided through the outer wall of each isolation plate. Holes; the passage holes on the adjacent separation plates are misaligned with each other, and the passage holes on the separation plates distributed at intervals are symmetrical to each other.

By adopting the above technical scheme, the isolation plate is used to block the fluid medium, the passage holes facilitate the fluid medium to pass through the isolation plate, and multiple isolation plates block the fluid medium layer by layer, effectively reducing the flow velocity of the fluid medium in the material guide channel, making the fluid The medium is fully heat exchanged; the passage holes on adjacent isolation plates are misaligned with each other, so that the fluid medium needs to flow along the periphery of the directional column before passing through the passage holes, which further slows down the speed of the fluid medium; the passage holes on the isolation plates distributed at intervals The mutual symmetry makes the fluid medium advance regularly between the separation plates, ensuring the flow stability of the fluid medium.

Preferably, the outer edges of all the isolation plates are in interference fit with the inner wall of the material guide channel.

By adopting the above technical solution, the isolation plate abutting against the inner wall of the material guide channel further improves the positioning stability of the internal member in the material guide channel, thereby further ensuring the circulation stability of the fluid medium in the material guide channel.

In the second aspect, the application of a block hole type silicon carbide microreactor provided by the application adopts the following technical scheme:

An application of the block-hole silicon carbide microreactor according to any one of claims 1-9, the block-hole silicon carbide microreactor is used for mixing and/or heat exchange of fluid media.

By adopting the above technical solution, the operator can quickly and efficiently mix and heat different fluid media, or exchange heat for a single fluid medium through the device.

In summary, the application has the following beneficial technical effects:

1. The structure of the material guide channel set on the matrix block is stable, and it can carry out the mixing and heat exchange of strong acid or strong alkali fluid materials under high temperature and high pressure environment, and the application stability is high; in addition, the inner diameter of the material guide channel can be larger Adjustment increases the flux of the guide channel;

2. The inner member slows down the flow speed of the fluid medium in the material guide channel, so that the fluid medium and the heat exchange medium can fully exchange heat; in addition, through the blocking of the fluid medium by multiple sets of isolation plates, the fluid medium advances in a regular manner. The inner cavity of the guide channel ensures the flow stability of the fluid medium in the guide channel;

3. The diversion groove can be connected with multiple sets of reversing grooves, so that the upper and lower adjacent sets of lanes are connected in parallel, and the fluid medium can reach multiple sets of lanes at the same time through the reversing grooves for circulation, which improves the flow rate of the fluid medium in the material guide channel. access efficiency.

Description of drawings

Fig. 1 is the structural representation of a kind of block hole type silicon carbide microreactor of the embodiment 1 of the present application;

Fig. 2 is the schematic diagram that is used to embody the positional relationship of sealing plate, side plate and reaction block in embodiment 1;

Fig. 3 is a horizontal cross-sectional schematic diagram for embodying the positional relationship between the material guide channel and the heat exchange channel in Example 1;

Fig. 4 is a schematic vertical cross-sectional view for reflecting the connection relationship between adjacent flow channels of the guide cylinder in embodiment 1;

Fig. 5 is the structural representation of matrix block in a kind of block hole type silicon carbide microreactor of embodiment 2;

Fig. 6 is a horizontal sectional schematic diagram of the positional relationship between the material guide channel and the matrix block in embodiment 2;

Fig. 7 is the structural representation of a kind of block hole type silicon carbide microreactor of embodiment 3;

Fig. 8 is the structural representation of a kind of block hole type silicon carbide microreactor of embodiment 4;

Fig. 9 is the schematic diagram that is used to embody the positional relationship of diversion groove and reversing groove on the reaction block in embodiment 4;

Fig. 10 is a vertical sectional schematic view of a helical feed channel in a block hole type silicon carbide microreactor of embodiment 5;

Fig. 11 is the vertical direction cross-sectional schematic view of the grooved material guide channel in a kind of block hole type silicon carbide microreactor of embodiment 6;

Fig. 12 is the schematic diagram of internal member and reaction block connection relation in a kind of block hole type silicon carbide microreactor of embodiment 7;

Fig. 13 is a schematic diagram showing the positional relationship between the isolation plate and the orientation column in Embodiment 7.

Explanation of reference signs:

1. Substrate block; 11. Reaction block; 111. Transfer slot; 112. Reversing slot; 113. Turning slot; 12. Side plate;

2. Sealing plate; 21. Through hole;

3. Material guide channel; 31. Runner; 32. Walkway; 33. Spiral groove; 34. Step groove;

4. Heat exchange channels;

5. Diversion unit;

6. Internal components; 61. Orientation column; 62. Isolation plate; 621. Access hole.

Detailed ways

The embodiment of the present application discloses a block hole silicon carbide microreactor. The block-hole silicon carbide microreactor can be used not only for mixing different fluid media, but also for exchanging heat with a single fluid medium. At the same time, the block-hole silicon carbide microreactor can also mix different fluid media while exchanging heat for the mixed fluid media.

The present application will be described in further detail below in conjunction with accompanying drawings 1-13.

Example 1

Referring to FIG. 1 and FIG. 2 , the block hole silicon carbide microreactor includes a matrix block 1 and a sealing plate 2 . The matrix block 1 is made of silicon carbide through high-temperature sintering. The matrix block 1 includes a reaction block 11 , and the reaction block 11 is rectangular.

Referring to Fig. 2 and Fig. 3, a plurality of heat exchange passages 4 are arranged on the opposite side walls of the reaction block 11, and all the heat exchange passages 4 are parallel to each other, and a heat exchange medium can be passed into each heat exchange passage 4, and the heat exchange The medium enters from one end of the heat exchange channel 4 and exits from the other end.

Referring to FIG. 2 and FIG. 4 , a material guide channel 3 is distributed in a serpentine shape on the reaction block 11 . In this embodiment, the material guiding channel 3 is a linear channel, and the vertical section of the linear material guiding channel 3 is circular. Each material guide channel 3 includes a plurality of flow channels 31 parallel to each other, and each flow channel 31 runs through opposite side walls of the reaction block 11 . In this embodiment, the arrangement directions of the material guide channel 3 and the heat exchange channel 4 are different, and the two are crossed. All flow passages 31 form a plurality of sets of parallel passages 32 on the reaction block 11 , and adjacent passages 32 are distributed at intervals along the height direction of the reaction block 11 .

Referring to FIG. 2 and FIG. 4 , multiple sets of transition grooves 111 are provided at intervals on the outer wall of the reaction block 11 , and the transition grooves 111 are used to connect all flow channels 31 in the same lane 32 in series. In this embodiment, the number of transfer grooves 111 can be N groups, the first group of transfer grooves 111 is correspondingly distributed at one end of the length direction of the first flow channel 31 and the second flow channel 31, and the second group of transfer grooves 111 The slots 111 are correspondingly distributed at the ends of the second flow channel 31 and the third flow channel 31 away from the first set of transfer slots 111, and the third set of transfer slots 111 are correspondingly distributed between the third flow channel 31 and the fourth flow channel. The end of the track 31 away from the second group of adapter slots 111 is circulated.

Referring to FIG. 2 and FIG. 4 , multiple groups of reversing grooves 112 are arranged at intervals on the outer wall of the reaction block 11 , and the reversing grooves 112 are used to connect all flow channels 31 in different lanes 32 . In this embodiment, the number of reversing slots 112 can be N groups, and the first group of reversing slots 112 is connected to the two flow channels 31 at the same end of the first row 32 and the second row 32 on the side of the reaction block 11. , the second group of reversing grooves 112 connects the second row 32 and the two runners 31 at the same end of the third row in the length direction on the other side of the reaction block 11, and the second group of reversing grooves 112 is connected to the first group of reversing grooves 112 They are respectively located at both ends of the reaction block 11 in the length direction, and thus circulate.

Referring to FIG. 2 , the matrix block 1 also includes a side plate 12 made of silicon carbide, and the side plate 12 is brazed and fixed to one side of the matrix block 1 to block one end of all flow channels 31 in the longitudinal direction. The sealing plate 2 is also made of silicon carbide, and the sealing plate 2 is brazed and fixed on the side of the matrix block 1 away from the side plate 12 to seal off the other ends of the flow channels 31 in the length direction. At this time, the adjacent flow channels 31 are connected by the transfer groove 111 and the reversing groove 112, and the sealing plate 2 and the side plate 12 reduce the outward flow of the fluid medium when passing through the transfer groove 111 and the reversing groove 112. overflow phenomenon.

Referring to FIG. 2 , multiple sets of through holes 21 are provided through the outer wall of the sealing plate 2 , and in this example, the number of through holes 21 can be two sets. One group of through holes 21 corresponds to the flow channel 31 at one end of the highest channel 32 in the length direction, for the fluid medium to pass into the material guide channel 3 . Another group of through holes 21 corresponds to the flow channel 31 at one end of the lowest channel 32 in the length direction, for the fluid medium to be led out. During this process, the operator can pass the heat exchange medium into the heat exchange channel 4 to achieve the effect of heat exchange when the fluid medium passes through the reaction block 11 . It should be noted that the operator can increase the number of through holes 21 to correspond to different flow channels 31, so that a variety of different fluid media can enter the material guide channel 3 at the same time, thereby realizing the flow of different fluid media in the reaction block 11. The effect of heat exchange while mixing.

The implementation principle of the block hole type silicon carbide microreactor in the embodiment of the application is:

The fluid medium enters the first flow channel 31 through the through hole 21 , and then, the fluid medium flows into the second flow channel 31 , the third flow channel 31 sequentially through the transfer groove 111 , until the last flow channel 31 of the same row 32 . The reversing groove 112 can guide the fluid medium in the upper channel 32 to the flow channel 31 of the lower channel 32 to complete the circulation of the fluid medium in the material guide channel 4 . During this process, a continuously flowing heat exchange medium can be introduced into each heat exchange channel 4 to exchange heat for the fluid medium in the material guide channel 3 .

Example 2

Referring to Figures 5 and 6, the difference between this embodiment and Embodiment 1 is that the matrix block 1 is an independent rectangular block, and the ends of all flow channels 31 away from the sealing plate 2 are located inside the matrix block 1, and the inside of the matrix block 1 Multiple sets of transition slots 111 and reversing slots 112 are also provided. The transition groove 111 located inside the matrix block 1 connects the adjacent flow channels 31 of the same row 32 away from the end of the sealing plate 2, and the reversing groove 112 located inside the matrix block 1 connects the upper and lower adjacent flow channels 31 of different rows 32 away from the end of the sealing plate 2. one end of board 2.

The independent matrix block 1 has a stable structure, which ensures the stability of the flow of the fluid medium. The end of the flow channel 31 away from the sealing plate 2 is located inside the matrix block 1 to ensure the circulation efficiency of the fluid medium while reducing the investment in the side plate 12, simplifying the assembly process of the block-hole silicon carbide microreactor, and reducing the production cost. cost.

Example 3

Referring to FIG. 7 , the difference between this embodiment and Embodiment 1 is that there is one heat exchange channel 4 , and the arrangement direction of the heat exchange channel 4 and the material guide channel 3 is the same. The number of through holes 21 may be four groups.

Referring to Fig. 7, in this embodiment, the heat exchange channel 4 is serpentinely distributed on the reaction block 11 in a manner equivalent to the material guide channel 3, and the heat exchange channel 4 is located on the side wall of the reaction block 11 where the material guide channel 4 is arranged. . All the rows 32 of the material guide channel 4 are parallel to all the rows 32 of the heat exchange channel 4 , wherein all the rows 32 of the material guide channel 4 may be odd-numbered rows, and all the rows 32 of the heat exchange channel 4 may be even-numbered rows. The heat exchange channel 4 is also connected to the adjacent flow channels 31 of the same row 32 through the transition groove 111 , and the heat exchange channel 4 is also connected to the upper and lower adjacent flow channels 31 of different rows 32 through the reversing groove 112 .

Referring to Fig. 7, wherein two groups of through holes 21 correspond to the feed flow channel 31 and the discharge flow channel 31 of the heat exchange channel 4, and the other two groups of through holes 21 correspond to the feed flow channel 31 of the material guide channel 3 And discharge flow channel 31.

Both the fluid medium and the heat exchange medium enter the interior of the reaction block 11 through the through hole 21 to circulate, which simplifies the operation steps and improves the convenience of the operator. The heat exchange channel 4 and the material guide channel 3 parallel to each other make it easier for the fluid medium and the heat exchange medium to exchange heat during circulation, thereby improving the heat exchange efficiency of the equipment for the fluid medium. At the same time, the heat exchange channel 4 and the material guide channel 3 opened on the same side of the reaction block 11 facilitate rapid construction and save production costs.

Example 4

With reference to Fig. 8 and Fig. 9, the difference between this embodiment and embodiment 3 is that the quantity of the material guide channel 4 can be three, and the quantity of the heat exchange channel 4 can be three. Multiple groups of turning grooves 113 are provided on the sidewall of the reaction block 11 . The number of through holes 21 can be seven groups, and the side plate 12 is also provided with seven groups of through holes 21 .

Referring to FIG. 9 , in this embodiment, one material guiding channel 4 is parallel to one heat exchanging channel 4 , and one material guiding channel 4 and one heat exchanging channel 4 jointly form a group of flow guiding units 5 . The number of flow guide units 5 can be three groups, and each group of flow guide units 5 can have five rows of lanes 32 . Wherein, the rows 32 of the material guide channel 4 may be odd-numbered, may be three rows, and the rows 32 of the heat exchange channel 4 may be even-numbered, may be two rows.

Referring to Fig. 9, the same end of the first row 32 and the third row 32 of the material guide channel 4 are connected by a reversing groove 112, and the same end of the third row 32 of the material guide channel 4 and the fifth row 32 of the length direction It is also connected through the reversing groove 112 . On the opposite side walls of the reaction block 11, the reversing grooves 112 are also distributed at the guide channel 4, the difference is that the reversing grooves 112 on the opposite sides of the reaction block 11 are respectively located at both ends of the reaction block 11 in the length direction. The same end of the length direction of the third row 32 and the fifth row 32 of the material guide channel 4 is connected by a diversion groove 113, and the inner diameter of the diversion groove 113 is larger than the inner diameter of the reversing groove 112, so as to include two groups of adjacent up and down Reversing slot 112 .

Referring to FIG. 8 and FIG. 9 , the diversion groove 113 at the heat exchange channel 4 is directly sleeved on the outside of the diversion groove 112 to increase the inner diameter of the diversion groove 112 . In this embodiment, there are three sets of turning grooves 113 at the material guide channel 4 , and four sets of turning grooves 113 at the heat exchange channel 4 .

Referring to FIG. 8 , four sets of through holes 21 correspond to the four sets of turning grooves 113 at the heat exchange channel 4 , and the other three sets of through holes 21 correspond to the three sets of turning grooves 113 at the material guide channel 3 .

The first group of flow guiding units 5 is used for elaboration. The fluid medium enters the inner cavity of the diversion groove 113 at the material guide channel 4 through the through hole 21, and each group of diversion grooves 113 is connected to two groups of diversion grooves 112 at the same time, so that the fluid medium can enter the first row 32, the third row 32 and the first row 32 at the same time. Inside the runner 31 of the fifth lane 32 . The heat exchange medium enters the inner cavity of the diversion groove 113 at the heat exchange channel 4 through the through hole 21, and each group of diversion grooves 113 is connected to two sets of diversion grooves 112 at the same time, so that the heat exchange medium enters the second row 32 and the fourth row 32 at the same time. Inside the runner 31. This process greatly increases the flow rate of the fluid medium and heat exchange medium into the inner chamber of the reaction block 11 per unit time, further improving the material flux in the reaction block 11 . At the same time, multiple groups of guide units 5 feed and discharge materials at the same time, which facilitates the mixing and heat exchange of multiple groups of materials at the same time, and improves the application efficiency of the equipment.

Because the upper and lower adjacent reversing slots 112 are all located at the same end of the length direction of the different lanes 32, the fluid medium enters the inner cavity of the reaction block 11 from the through hole 21 of the sealing plate 2, and then flows from the through hole 21 of the side plate 12 to the inner cavity of the reaction block 11. Exhaust.

Example 5

Referring to FIG. 10 , the difference between this embodiment and Embodiment 1 is that the material guide channel 3 is a spiral channel. The threaded material guide channel 3 is based on the linear material guide channel 3 , and the inner wall of the material guide channel 3 is provided with a spiral groove 33 , and the spiral groove 33 extends along the length direction of the material guide channel 3 .

The thread groove increases the inner cavity space of the material guide channel 3, so that the amount of fluid medium in the inner cavity of the material guide channel 3 is increased, and the flux of the fluid medium in the material guide channel 3 is increased. At the same time, the helical groove 33 progresses in a spiral manner, which slows down the flow rate of the fluid medium in the material guide channel 3 , thereby stabilizing the flow rate of the fluid medium. Moreover, the spiral groove 33 prolongs the heat exchange time between the fluid medium and the heat exchange medium, and improves the heat exchange efficiency of the reaction block 11 to the fluid medium.

Example 6

Referring to FIG. 11 , the difference between this embodiment and Embodiment 1 is that the material guide channel 3 is a groove-shaped channel. The grooved material guide channel 3 is based on the linear material guide channel 3, and a plurality of sets of stepped grooves 34 are arranged on the inner wall of the material guide channel 3, and all the stepped grooves 34 extend along the length direction of the guide channel.

The step groove 34 further increases the inner cavity space of the material guide channel 3, and reduces the distance between the adjacent heat exchange channel 4 and the material guide channel 3, so that the fluid medium is easy to accumulate in the step groove 34 for a short time, ensuring Sufficiency of heat exchange medium to fluid medium. At the same time, the step groove 34 is easy to absorb and store the flowing fluid medium, so that the impact strength of the fluid medium in the flow channel 31 is greatly reduced, and the stability of the fluid flow is improved.

Example 7

Referring to FIG. 12 , the difference between this embodiment and Embodiment 1 is that the reaction block 11 is provided with an internal member 6 inside the material guide channel 3 . The number of internal components 6 can be one or more groups, and in this embodiment, the number of internal components 6 can be three groups.

Referring to FIGS. 12 and 13 , the inner member 6 includes an orientation column 61 . Adjacent orientation columns 61 touch end to end, one orientation column 61 at the end abuts against the side wall of the side plate 12 facing the reaction block 11, and the other orientation column 61 at the end abuts against the sealing plate 2 toward the reaction block. Block 11 side walls. The inner member 6 also includes a plurality of isolation plates 62 integrally formed with the orientation column 61 , and all the isolation plates 62 are equidistantly distributed on the outer edge of the orientation column 61 . The orientation column 61 abuts against the inner cavity of the material guide channel 3 , and the side wall of the isolation plate 62 away from the orientation column 61 abuts against the inner wall of the material guide channel 3 .

Referring to FIG. 13 , at least one set of passage holes 621 is provided through the outer wall of each isolation plate 62. In this embodiment, the number of passage holes 621 on each isolation plate 62 can be four groups, and the passage holes 621 are far away from the orientation columns. One end of 61 is provided with opening. The passage holes 621 on the two adjacent isolation plates 62 are all misplaced, and the passage holes 621 on the two isolation plates 62 distributed at intervals are symmetrical to each other.

After the fluid medium passes through the passage hole 621 on the first separation plate 62, it is blocked by the second separation plate 62. After the fluid medium flows along the periphery of the orientation column 61, it can pass through the passage hole 621 on the second separation plate 62 and Enter between the second isolation board 62 and the third isolation board 62 . At this time, the third isolation plate 62 blocks the fluid medium again, and the fluid medium can pass through the material guide channel 4 after being continuously turned and passed through the passage hole 621 . In this process, the fluid medium is blocked by the isolation plate 62, and the passage hole 621 releases the fluid medium, which improves the flow stability of the fluid medium and ensures the adequacy of mixing of different fluid media. At the same time, the flow time of the fluid medium in the material guide channel 4 is greatly extended, so that the heat exchange between the fluid medium and the heat exchange medium is sufficient, and the heat exchange efficiency of the equipment to the fluid medium is improved.

All of the above are preferred embodiments of the application, and are not intended to limit the protection scope of the application. Therefore, all equivalent changes made according to the structure, shape, and principle of the application should be covered by the protection scope of the application. Inside.

Claims

A block hole type silicon carbide microreactor is characterized in that: it comprises a matrix block (1) and a sealing plate (2); said matrix block (1) is provided with at least one material guide channel ( 3) and at least one heat exchange channel (4) for the heat exchange medium to enter and exit; multiple groups of through holes (21) are arranged on the sealing plate (2), and the sealing plate (2) is sealed and fixed to the matrix block ( 1), the through hole (21) is communicated with the material guide channel (3) or communicated with the material guide channel (3) and the heat exchange channel (4) at the same time.
The block hole type silicon carbide microreactor according to claim 1, characterized in that: the matrix block (1) comprises a reaction block (11) and a side plate (12); the heat exchange channel (4) and conduction The feed channels (3) are all arranged on the reaction block (11), the sealing plate (2) is sealed and fixed on one side of the reaction block (11), and the side plate (12) is sealed and fixed on the reaction block (11) away from One side of the cover plate (2).
The block-hole silicon carbide microreactor according to claim 1, characterized in that: the material guide channel (3) is linear, spiral or grooved.
The block hole type silicon carbide microreactor according to claim 2, characterized in that: the arrangement directions of the material guide channel (3) and the heat exchange channel (4) are the same or different.
The block hole type silicon carbide microreactor according to claim 1, characterized in that: the material guide channel (3) and the heat exchange channel (4) comprise a plurality of flow channels (31), all of which are on the same plane The runners (31) jointly form a group of lanes (32); two adjacent runners (31) are communicated through transfer grooves (111), and the adjacent two sets of runners (32) are connected through a commutation Groove (112) communicates.
The block hole type silicon carbide microreactor according to claim 5, characterized in that: multiple groups of turning grooves (113) are arranged on the side wall of the reaction block (11), and the turning grooves (113) are used for Different lanes (32) for parallel connection of material guide channels (3) and/or different lanes (32) for parallel connection of heat exchange channels (4).
The block hole type silicon carbide microreactor according to claim 5, characterized in that: said reaction block (11) is provided with at least one set of internal members ( 6), the inner member (6) is interference fit between the side plate (12) and the sealing plate (2).
The block hole type silicon carbide microreactor according to claim 7, characterized in that: the internal member (6) comprises an orientation column (61) and a plurality of isolation plates (62); all of the isolation plates (62) Distributed at the outer edge of the orientation column (61) at intervals, and at least one set of passage holes (621) for the fluid medium to pass through the outer wall of each of the isolation plates (62); the adjacent isolation plates (62) The passage holes (621) on the separation plate (62) are mutually misaligned, and the passage holes (621) on the separation plate (62) distributed at intervals are symmetrical to each other.
The block hole type silicon carbide microreactor according to claim 8, characterized in that: the outer edges of all the isolation plates (62) interfere with the inner wall of the material guide channel (3).
An application of the block-hole silicon carbide microreactor according to any one of claims 1-9, characterized in that: the block-hole silicon carbide microreactor is used for mixing and/or heat exchange of fluid media.