Microchannel reactor channel structure and microchannel reactor

Abstract

The present application provides a microchannel reactor channel structure and a microchannel reactor, wherein the microchannel reactor channel structure includes a reaction channel unit, a material inlet is provided on one side of the reaction channel unit, a material outlet is provided on the other side of the reaction channel unit, a primary turbulence unit is provided on the reaction channel unit, both sides of the primary turbulence unit are primary reaction channels, at least one secondary turbulence unit is provided on the side of the reaction channel unit close to the material outlet, and both sides of each secondary turbulence unit are secondary reaction channels; the present application cooperates with the primary turbulence unit and the secondary turbulence unit, and compared with the existing microchannel reactor channel structure, the patented channel structure can increase the mixing effect of the reaction materials in the channel, bring positive driving effect on the sufficient mass transfer and reaction between materials, and at the same time can promote the rapid progress of the reaction in the reactor and accelerate the reaction efficiency.

Description

Technical Field

[0001] The present application relates to the field of chemical technology, and in particular to a microchannel reactor channel structure and a microchannel reactor. Background Art

[0002] With the continuous development of the market and the deepening of demand, microchannel reactors have gradually attracted the attention of more and more scientific research institutions, universities, chemical companies, etc.; microchannel reactors, also known as microreactors, are miniature reactors with characteristic dimensions between 10 and 300 microns (or 1000 microns) manufactured using precision machining technology. The "micro" in microreactor means that the channels of the process fluid are at the micron level, rather than the small size of the microreaction equipment or the small output of the product. The microreactor can contain thousands of microchannels, so it can achieve a very high output; microchannel reactor is a continuous flow reaction device manufactured through micro-machining and tight processing technology. Compared with conventional reaction devices, microchannel reactors have significant advantages such as small size, high reaction efficiency, and small footprint. They have great advantages in energy efficiency, reaction yield, reaction rate, safety and reliability, and scalable process control. Therefore, microchannel reactors have gradually become a key research direction in the field of chemical engineering technology.

[0003] Microchannel reactors have the characteristics of high mass and heat transfer efficiency, low back-mixing probability, and better control of reaction temperature and residence time. The flow state in the microchannel reactor is close to plug flow, which greatly weakens the axial diffusion effect of the microchannel reactor. The most critical one is the reaction channel structure. Different reaction channels play a key role in improving the reaction efficiency and product yield of microchannel reactors. Most of the existing technologies are Figure 1 The conventional heart-shaped structure microchannel reactor reaction channel shown, such as a microchannel reaction structure and microchannel reactor with application number 201920675185.4, also clearly mentions this structure. After the fluid enters the reaction unit of the conventional heart-shaped structure microchannel reactor, it only undergoes a single turbulence, and the turbulence effect is poor, which will further reduce the reaction rate and cause the mixing effect of the two reaction materials to deteriorate, thereby affecting the reaction efficiency; and the setting of the heart-shaped structure microchannel unit makes the flow resistance of the reaction material in the reactor larger.

[0004] Therefore, it is necessary to provide a new technical solution to solve the above technical problems. Utility Model Content

[0005] The present application provides a microchannel reactor channel structure, comprising a reaction channel unit, wherein a material inlet is arranged on one side of the reaction channel unit, and a material outlet is arranged on the other side of the reaction channel unit, a primary turbulence unit is arranged on the reaction channel unit, and both sides of the primary turbulence unit are primary reaction channels, and at least one secondary turbulence unit is arranged on the side of the reaction channel unit close to the material outlet, and both sides of each secondary turbulence unit are secondary reaction channels, and at least two secondary reaction channels converge at the material outlet.

[0006] As a preferred solution, the material outlet and the material inlet are in the same straight line.

[0007] As a preferred solution, a secondary reaction channel is provided between the upper and lower adjacent secondary spoiler units.

[0008] As a preferred embodiment, the reaction channel unit includes an outwardly convex arc unit 1, an outwardly convex arc unit 2, and an outwardly convex arc unit 3. An inwardly concave arc unit 1 is arranged between the outwardly convex arc unit 1 and the outwardly convex arc unit 2, an inwardly concave arc unit 2 is arranged between the outwardly convex arc unit 2 and the outwardly convex arc unit 3, and an inwardly concave arc unit 3 is arranged between the outwardly convex arc unit 3 and the outwardly convex arc unit 1.

[0009] As a preferred solution, the material inlet is arranged on the concave arc-shaped unit three, and the material outlet is arranged on the convex arc-shaped unit two.

[0010] As a preferred embodiment, the angle between the center of the convex arc unit one and the center of the convex arc unit two is 120°, the angle between the center of the convex arc unit two and the center of the convex arc unit three is 120°, and the angle between the center of the convex arc unit three and the center of the convex arc unit one is 120°; the angle between the center of the concave arc unit one and the center of the concave arc unit two is 120°, the angle between the center of the concave arc unit two and the center of the concave arc unit three is 120°, and the angle between the center of the concave arc unit three and the center of the concave arc unit one is 120°.

[0011] As a preferred solution, the cross-sectional shape of the secondary spoiler unit is one of a circle, a diamond, an ellipse, a triangle, a heart, a rectangle, a runway, and a Y shape.

[0012] A microchannel reactor using a microchannel reactor channel structure is formed by connecting a plurality of microchannel reactor channel structures in series. In adjacent reaction channel units, the material outlet of the previous reaction channel unit is connected to the material inlet of the next reaction channel unit.

[0013] The present application combines a primary turbulence unit and a secondary turbulence unit. Compared with the existing microchannel reactor channel structure, the patented channel structure can increase the mixing effect of the reaction materials in the channel, bring a positive driving effect on the sufficient mass transfer and reaction between materials, and at the same time promote the rapid progress of the reaction in the reactor and accelerate the reaction efficiency; in addition, the structural design of the reaction channel unit in the present application has a smaller flow resistance for the reaction materials in the reactor, improves the reaction efficiency, and has more significant advantages in improving the yield of the reactants. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a conventional heart-shaped microchannel reactor in the prior art;

[0015] Figure 2 It is a schematic diagram of the structure in which the cross-sectional shape of the secondary spoiler unit in the present application is Y-shaped;

[0016] Figure 3 yes Figure 2 Application in microchannel reactors;

[0017] Figure 4 It is a schematic diagram of the structure in which the cross-section of the secondary spoiler unit in the present application is a diamond shape;

[0018] Figure 5 yes Figure 4 Application in microchannel reactors;

[0019] Figure 6 It is a schematic diagram of a structure in which a plurality of secondary spoiler units are provided in the present application, and the cross-sectional shape of the secondary spoiler unit is a runway shape;

[0020] Figure 7 yes Figure 6 Application in microchannel reactors;

[0021] 1. Reaction channel unit; 2. Material inlet; 3. Material outlet; 4. Arc surface; 5. Primary reaction channel; 6. Primary mixing channel; 7. Secondary spoiler unit; 8. Secondary reaction channel; 9. Outwardly convex arc unit 1; 10. Outwardly convex arc unit 2; 11. Outwardly convex arc unit 3; 12. Inwardly concave arc unit 1; 13. Inwardly concave arc unit 2; 14. Inwardly concave arc unit 3; 15. Semicircular portion; 16. Rectangular portion; 17. Primary spoiler unit. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1 —Attachment Figure 7 The specific implementation of the utility model is described in detail. It should be noted that the specific implementation described here is only used to illustrate and explain the utility model, and is not used to limit the utility model.

[0023] Embodiment 1:

[0024] The present embodiment provides a microchannel reactor channel structure, comprising a reaction channel unit 1, wherein the reaction channel unit 1 is provided with a material inlet 2 on one side of the reaction channel unit 1, and a material outlet 3 on the other side of the reaction channel unit 1, preferably, the material outlet 3 and the material inlet 2 are in the same straight line, and further, the width of the material inlet 2 is smaller than the width of the material outlet 3, and the reaction channel unit 1 is provided with a primary spoiler unit 17, the primary spoiler unit 17 is arranged in an arc shape, and the arc surface 4 of the primary spoiler unit 17 faces the material inlet 2 or the material outlet 3. In this embodiment, taking the arc surface 4 facing the material outlet 3 as an example, the first spoiler unit 17 has primary reaction channels 5 on both sides of the reaction channel unit 1, and the side of the first spoiler unit 17 close to the material outlet 3 is a primary mixing channel 6; at least one secondary spoiler unit 7 is provided on the side of the reaction channel unit 1 close to the material outlet 3, and each secondary spoiler unit 7 has secondary reaction channels 8 on both sides, and at least two secondary reaction channels 8 converge at the material outlet 3.

[0025] The secondary spoiler unit 7 in this embodiment is not limited to a single structure, and the optimal and most suitable secondary spoiler structure can be selected according to different reactants and different reaction conditions, with better flexibility and adjustability. Specifically, the cross-sectional shape of the secondary spoiler unit 7 is one of circular, diamond, elliptical, triangular, heart-shaped, rectangular, runway-shaped, and Y-shaped.

[0026] After entering from the material inlet 2, due to the setting of the first-level turbulence unit 17, two first-level reaction channels 5 are formed on both sides of the first-level turbulence unit 17. After the materials of the two first-level reaction channels 5 merge in the first-level mixing channel 6, due to the setting of the second-level turbulence unit 7, the material flows through the second-level reaction channels 8 on both sides of each second-level turbulence unit 7, and after passing through at least two second-level reaction channels 8, merge at the material outlet 3 and flow to the material inlet 2 of the next microreactor channel.

[0027] like Figure 2 As shown, a schematic diagram of a structure in which a secondary spoiler unit has a Y-shaped cross-sectional shape is provided. Figure 3 for Figure 2 In the application in the microchannel reactor, the microchannel reactor is composed of a multi-stage series connection of the microchannel reactor channel structure of the present application, and between adjacent reaction channel units 1, the material outlet 3 of the previous reaction channel unit 1 is connected to the material inlet 2 of the next reaction channel unit 1, Figure 2 There is one secondary turbulence unit 7 and two secondary reaction channels 8.

[0028] like Figure 4 As shown, a schematic diagram of a structure in which a secondary spoiler unit is in a diamond shape is provided. Figure 5 for Figure 4 In the application in the microchannel reactor, the microchannel reactor is composed of a multi-stage series connection of the microchannel reactor channel structure of the present application, and between adjacent reaction channel units 1, the material outlet 3 of the previous reaction channel unit 1 is connected to the material inlet 2 of the next reaction channel unit 1, Figure 4 There is one secondary turbulence unit 7 and two secondary reaction channels 8.

[0029] More specifically, the reaction channel unit 1 includes an outwardly convex arc unit 19, an outwardly convex arc unit 2 10, and an outwardly convex arc unit 3 11. An inwardly concave arc unit 12 is arranged between the outwardly convex arc unit 19 and the outwardly convex arc unit 2 10, an inwardly concave arc unit 2 13 is arranged between the outwardly convex arc unit 2 10 and the outwardly convex arc unit 3 11, and an inwardly concave arc unit 3 14 is arranged between the outwardly convex arc unit 3 11 and the outwardly convex arc unit 19; in this embodiment, the material inlet 2 is arranged on the inwardly concave arc unit 3 14, and the material outlet 3 is arranged on the outwardly convex arc unit 2 10; preferably, the angle between the center of the outwardly convex arc unit 19 and the center of the outwardly convex arc unit 2 10 is 120°, and the angle between the center of the outwardly convex arc unit 2 10 and the outwardly convex arc unit 3 11 is 120°. The angle between the centers of arc unit three 11 is 120°, and the angle between the center of the convex arc unit three 11 and the center of the convex arc unit one 9 is 120°; the angle between the center of the concave arc unit one 12 and the center of the concave arc unit two 13 is 120°, the angle between the center of the concave arc unit two 13 and the center of the concave arc unit three 14 is 120°, and the angle between the center of the concave arc unit three 14 and the center of the concave arc unit one 12 is 120°; that is, the angle between the center of the convex arc unit one 9 and the center of the concave arc unit one 12 is 60°, the angle between the concave arc unit one 12 and the center of the convex arc unit two 10 is 60°, and so on, which is not elaborated here.

[0030] The design of the reaction channel unit 1 in this embodiment has more significant advantages in terms of smaller flow resistance of the reaction materials in the reactor, thereby improving the reaction efficiency and increasing the yield of the reactants.

[0031] Embodiment 2:

[0032] The difference between this embodiment and the first embodiment is that a plurality of secondary spoiler units 7 are provided, such as Figure 6As shown, the specific number of the secondary spoiler units 7 in this embodiment is 7, and the cross-section of the secondary spoiler unit 7 in this embodiment adopts a runway shape, that is, the cross-section of the secondary spoiler unit 7 includes two semicircular portions 15, and a rectangular portion 16 is provided between the two semicircular portions 15, and the width of the rectangular portion 16 is equal to the diameter of the semicircular portion 15; Figure 7 for Figure 6 In the application in the microchannel reactor, the microchannel reactor is composed of a multi-stage series connection of the microchannel reactor channel structure of the present application, and between adjacent reaction channel units 1, the material outlet 3 of the previous reaction channel unit 1 is connected to the material inlet 2 of the next reaction channel unit 1, Figure 6 There are seven secondary turbulence units 7 , both sides of each secondary turbulence unit 7 are secondary reaction channels 8 , and the lower and upper parts of adjacent secondary turbulence units 7 are also secondary reaction channels 8 .

[0033] The arrangement of multiple secondary turbulence units 7 can further enhance the mixing effect of the reaction materials in the channel and promote the rapid progress of the reaction in the reactor.

[0034] To sum up, due to the adoption of the above-mentioned technical scheme, the present application cooperates with the primary spoiler unit and the secondary spoiler unit. Compared with the existing microchannel reactor channel structure, the patented channel structure can increase the mixing effect of the reaction materials in the channel, bring a positive driving effect on the sufficient mass transfer and reaction between materials, and at the same time promote the rapid progress of the reaction in the reactor; in addition, the structural design of the reaction channel unit in the present application has a smaller flow resistance for the reaction materials in the reactor, improves the reaction efficiency, and has more significant advantages in improving the yield of the reactants.

[0035] The above-mentioned devices, connection relationships, etc. that are not specifically described belong to the prior art and will not be described in detail in the present utility model.

[0036] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings; however, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, a variety of simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the protection scope of the present application.

[0037] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, various possible combinations in this application will not be described separately.

[0038] In addition, the various implementation modes of the present application may be arbitrarily combined, and as long as they do not violate the concept of the present application, they should also be regarded as the contents disclosed in the present application.

Claims

1. A microchannel reactor channel structure, comprising a reaction channel unit (1), wherein one side of the reaction channel unit (1) is provided with a material inlet (2), and the other side of the reaction channel unit (1) is provided with a material outlet (3), and the reaction channel unit (1) is provided with a primary flow disturbance unit (17), and both sides of the primary flow disturbance unit (17) are primary reaction channels (5), characterized in that: At least one secondary turbulence unit (7) is arranged on one side of the reaction channel unit (1) close to the material outlet (3), and both sides of each secondary turbulence unit (7) are secondary reaction channels (8), and at least two secondary reaction channels (8) merge at the material outlet (3).

2. A microchannel reactor channel structure according to claim 1, characterized in that: The material outlet (3) and the material inlet (2) are in the same straight line.

3. A microchannel reactor channel structure according to claim 1, characterized in that: A secondary reaction channel (8) is located between the upper and lower adjacent secondary flow disturbance units (7).

4. A microchannel reactor channel structure according to claim 1, characterized in that: The reaction channel unit (1) comprises an outwardly convex arc unit 1 (9), an outwardly convex arc unit 2 (10), and an outwardly convex arc unit 3 (11); an inwardly concave arc unit 1 (12) is arranged between the outwardly convex arc unit 1 (9) and the outwardly convex arc unit 2 (10); an inwardly concave arc unit 2 (13) is arranged between the outwardly convex arc unit 2 (10) and the outwardly convex arc unit 3 (11); and an inwardly concave arc unit 3 (14) is arranged between the outwardly convex arc unit 3 (11) and the outwardly convex arc unit 1 (9).

5. A microchannel reactor channel structure according to claim 4, characterized in that: The material inlet (2) is arranged on the concave arc-shaped unit three (14), and the material outlet (3) is arranged on the convex arc-shaped unit two (10).

6. A microchannel reactor channel structure according to claim 4, characterized in that: The angle between the center of the outward convex arc unit one (9) and the center of the outward convex arc unit two (10) is 120°, the angle between the center of the outward convex arc unit two (10) and the center of the outward convex arc unit three (11) is 120°, and the angle between the center of the outward convex arc unit three (11) and the center of the outward convex arc unit one (9) is 120°; the angle between the center of the inward concave arc unit one (12) and the center of the inward concave arc unit two (13) is 120°, the angle between the center of the inward concave arc unit two (13) and the center of the inward concave arc unit three (14) is 120°, and the angle between the center of the inward concave arc unit three (14) and the center of the inward concave arc unit one (12) is 120°.

7. A microchannel reactor channel structure according to claim 1, characterized in that: The cross-sectional shape of the secondary spoiler unit (7) is one of a circle, a diamond, an ellipse, a triangle, a heart, a rectangle, a racetrack, and a Y shape.

8. A microchannel reactor using the microchannel reactor channel structure according to any one of claims 1 to 7, characterized in that: It is composed of a plurality of microchannel reactor channel structures connected in series, wherein in adjacent reaction channel units (1), the material outlet (3) of the previous reaction channel unit (1) is connected to the material inlet (2) of the next reaction channel unit (1).

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