Micro-channel reactor with high heat exchange efficiency

Abstract

The utility model provides a microchannel reactor with high heat exchange efficiency, which comprises a plurality of plates, Z-shaped reaction tanks are arranged on one end surfaces of the plates, material holes communicated with two ends of the Z-shaped reaction tanks are arranged on the plates, and the plates are overlapped along the direction perpendicular to the end surfaces of the plates. The end faces, far away from the Z-shaped reaction tanks, of the plates close the openings of the Z-shaped reaction tanks of the adjacent plates to form reaction channels, cooling tanks corresponding to the Z-shaped reaction tanks are formed in the plates, cooling water holes are formed in the two ends of each cooling tank, and the end faces, far away from the Z-shaped reaction tanks, of the plates close the openings of the cooling tanks of the adjacent plates to form cooling channels; and the screw sequentially penetrates through the multiple plates, and the two ends of the screw are in threaded connection with the nuts correspondingly. Compared with the traditional external heat exchange mode, the cooling tank is arranged on the plate, so that the heat exchange efficiency is improved, the normal operation of the material reaction is ensured, the consistency of the internal temperature and the external temperature of the reactor is ensured, and the product quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of microchannel reactors, in particular to a microchannel reactor with high heat exchange efficiency. Background Art

[0002] A microchannel reactor is a continuous flow reactor, which includes the mixer, heat exchanger and reactor controller required by the chemical unit. The current heat exchange method of the microchannel reactor is mostly external heat exchange. The first method is to place the microchannel reactor on the inner side of a heat exchange tank filled with a heat exchange medium. This heat exchange structure has the following problems during use: heat is generated inside the reactor during the reaction, and the heat cannot be exchanged, resulting in a large temperature difference between the inside and outside, affecting the consistency of the product. In addition, the outer surface area of ​​the microchannel reactor is limited, and the heat exchange efficiency is low. The second method is to use a shell-and-tube heat exchanger for heat exchange before the material enters the reactor. This operating method has the following problems: the temperature during the reaction cannot be accurately controlled, resulting in poor product consistency. Utility Model Content

[0003] In view of this, the utility model aims to provide a microchannel reactor with high heat exchange efficiency, in order to solve at least one of the above-mentioned technical problems.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A microchannel reactor with high heat exchange efficiency, comprising:

[0006] A plate, wherein a Z-shaped reaction groove is formed on one end surface of the plate, and material holes communicating with both ends of the Z-shaped reaction groove are formed on the plate. There are multiple plates, and the multiple plates are stacked in a direction perpendicular to the end surface of the plate. The end surface of the plate away from the Z-shaped reaction groove closes the opening of the Z-shaped reaction groove of the adjacent plate to form a reaction channel. The plate is provided with a cooling groove corresponding to the Z-shaped reaction groove, and cooling water holes are formed at both ends of the cooling groove. The end surface of the plate away from the Z-shaped reaction groove closes the opening of the cooling groove of the adjacent plate to form a cooling channel.

[0007] A screw rod is passed through a plurality of plates in sequence, and two ends of the screw rod are respectively threadedly connected with nuts.

[0008] Furthermore, a first mounting hole is opened on the plate, and the microchannel reactor with high heat exchange efficiency also includes a positioning tube, the outer diameter of the positioning tube matches the inner diameter of the first mounting hole, the positioning tube passes through the first mounting holes of multiple plates in sequence, and the screw is installed on the inner side of the positioning tube.

[0009] Furthermore, it also includes a sealing plate and a first pressing plate, wherein the sealing plate is provided with a second mounting hole matching the first mounting hole, and the sealing plate is provided with a connecting hole corresponding to the material hole, and the sealing plate is used to close the Z-shaped reaction groove of the last plate in the plurality of stacked plates;

[0010] The first pressing plate is provided with a third mounting hole matching the second mounting hole, the first pressing plate is fitted with the end face of the sealing plate away from the plate, the screw rod is located on the inner side of the second mounting hole and the third mounting hole, and one of the nuts is pressed against the end face of the first pressing plate away from the sealing plate.

[0011] Furthermore, the number of the first mounting holes is four and they are respectively located at the four corners of the plate, the number of the first pressing plates is two, each of the first pressing plates has two third mounting holes, and the first pressing plates are fixed with material pipes corresponding to the connecting holes.

[0012] Furthermore, the outer diameter of the material pipe matches the inner diameter of the connecting hole, one end of the material pipe is located inside the connecting hole, an annular sealing groove is formed at one end of the first pressure plate adjacent to the sealing plate, a sealing ring is provided in the annular sealing groove, and the annular sealing groove is located outside the material pipe.

[0013] Furthermore, the material hole of the plate farthest from the sealing plate is closed, and the microchannel reactor with high heat exchange efficiency also includes a second pressing plate, a fourth mounting hole matching the first mounting hole is opened on the second pressing plate, and a cooling water pipe corresponding to the cooling water hole is provided on the second pressing plate;

[0014] The screw rod is located inside the fourth mounting hole, the second pressing plate is in contact with the end surface of the plate away from the sealing plate, and the other nut is pressed against the end surface of the second pressing plate away from the sealing plate.

[0015] Furthermore, an annular limiting boss is provided on the outer side of the middle end of the cooling water pipe, a socket matching the cooling water pipe is formed on the second pressure plate, and an installation groove corresponding to the socket is formed on the end of the second pressure plate adjacent to the plate, the diameter of the installation groove matches the diameter of the annular limiting boss, the outer diameter of the cooling water pipe matches the inner diameter of the cooling water hole, and one end of the cooling water pipe is installed on the inner side of the cooling water hole.

[0016] Furthermore, a sealing gasket is provided between the annular boss and the plate.

[0017] Furthermore, the outer surface of the plate is provided with an oleophobic protective layer.

[0018] Furthermore, a gasket is provided between the nut and the plate.

[0019] Compared with the prior art, the microchannel reactor with high heat exchange efficiency described in the utility model has the following beneficial effects:

[0020] (1) Compared with the traditional external heat exchange form, the microchannel reactor with high heat exchange efficiency described in the utility model improves the heat exchange efficiency by setting a cooling groove on the plate, ensures the normal reaction of the material, and ensures the consistency of the temperature inside and outside the reactor, thereby improving the product quality.

[0021] (2) In the microchannel reactor with high heat exchange efficiency described in the utility model, the positioning tube is arranged to position the multiple plates, so that the material holes of the multiple plates can be aligned, which is convenient for the circulation of materials and cooling water. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the microchannel reactor according to an embodiment of the utility model from a first viewing angle;

[0024] Figure 2 This is a schematic diagram of the stereoscopic structure of the microchannel reactor according to an embodiment of the utility model from a second viewing angle;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the plate according to the embodiment of the utility model;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the sealing plate according to an embodiment of the utility model;

[0027] Figure 5 This is a schematic diagram of the three-dimensional structure of the first pressing plate according to an embodiment of the utility model;

[0028] Figure 6 This is a schematic diagram of the three-dimensional structure of the second pressing plate according to an embodiment of the utility model;

[0029] Figure 7 This is a schematic diagram of the cross-sectional structure of a microchannel reactor according to an embodiment of the utility model;

[0030] Figure 8 For the embodiment of the utility model Figure 7 Schematic diagram of the structure at A in the middle;

[0031] Fig. 9 For the embodiment of the utility model Figure 7 Schematic diagram of the structure at B in the middle;

[0032] Fig.10 This is a schematic diagram of the cross-sectional structure of the cooling water pipe described in an embodiment of the utility model.

[0033] Description of reference numerals:

[0034] 1. Plate; 2. Sealing plate; 3. First pressing plate; 4. Second pressing plate; 5. Cooling water pipe; 6. Sealing ring; 7. Screw; 8. Nut; 9. Positioning tube; 10. Sealing gasket; 101. First mounting hole; 102. Z-shaped reaction groove; 103. Material hole; 104. Cooling groove; 105. Cooling water hole; 201. Second mounting hole; 202. Connecting hole; 301. Third mounting hole; 302. Material pipe; 303. Annular sealing groove; 401. Fourth mounting hole; 402. Socket; 403. Mounting groove; 501. Annular limiting boss. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0036] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0038] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0039] like Figures 1 to 10 As shown, a microchannel reactor with high heat exchange efficiency comprises:

[0040] A plate 1, a Z-shaped reaction groove 102 is formed on one end surface of the plate 1, a material hole 103 connected with both ends of the Z-shaped reaction groove 102 is formed on the plate 1, the number of the plates 1 is multiple, and the multiple plates 1 are stacked in a direction perpendicular to the end surface of the plate 1, the end surface of the plate 1 away from the Z-shaped reaction groove 102 closes the opening of the Z-shaped reaction groove 102 of the adjacent plate 1 to form a reaction channel, a cooling groove 104 corresponding to the Z-shaped reaction groove 102 is formed on the plate 1, and cooling water holes 105 are formed at both ends of the cooling groove 104, and the end surface of the plate 1 away from the Z-shaped reaction groove 102 closes the opening of the cooling groove 104 of the adjacent plate 1 to form a cooling channel;

[0041] The screw rod 7 passes through the plurality of plates 1 in sequence, and both ends of the screw rod 7 are respectively threadedly connected with nuts 8.

[0042] The plate 1 is provided with a first mounting hole 101, and the microchannel reactor with high heat exchange efficiency further comprises a positioning tube 9, the outer diameter of the positioning tube 9 matches the inner diameter of the first mounting hole 101, the positioning tube 9 sequentially penetrates the first mounting holes 101 of the plurality of plates 1, and the screw 7 is installed on the inner side of the positioning tube 9. The setting of the positioning tube 9 plays a positioning role for the plurality of plates 1, so that the material holes 103 of the plurality of plates 1 can be aligned, which is convenient for the circulation of materials and cooling water.

[0043] It also includes a sealing plate 2 and a first pressing plate 3. The sealing plate 2 is provided with a second mounting hole 201 matching the first mounting hole 101, and the sealing plate 2 is provided with a connecting hole 202 corresponding to the material hole 103. The sealing plate 2 is used to close the Z-shaped reaction groove 102 of the last plate 1 among multiple stacked plates 1; the first pressing plate 3 is provided with a third mounting hole 301 matching the second mounting hole 201, and the first pressing plate 3 is fitted with the end surface of the sealing plate 2 away from the plate 1, and the screw 7 is located on the inner side of the second mounting hole 201 and the third mounting hole 301, and one of the nuts 8 is pressed tightly against the end surface of the first pressing plate 3 away from the sealing plate 2.

[0044] There are four first mounting holes 101, which are respectively located at the four corners of the plate 1. There are two first pressing plates 3, each of which has two third mounting holes 301. A material pipe 302 corresponding to the connection hole 202 is fixed on the first pressing plate 3. The material pipe 302 is connected to the connection hole 202 through the first pressing plate 3, which facilitates the disassembly and maintenance of the reactor and improves the work efficiency.

[0045] The outer diameter of the material pipe 302 matches the inner diameter of the connecting hole 202. One end of the material pipe 302 is located inside the connecting hole 202. An annular sealing groove 303 is formed at one end of the first pressing plate 3 adjacent to the sealing plate 2. A sealing ring 6 is arranged in the annular sealing groove 303. The annular sealing groove 303 is located outside the material pipe 302. The sealing ring 6 improves the sealing between the material pipe 302 and the sealing plate 2 to prevent material leakage.

[0046] The material hole 103 of the plate 1 farthest from the sealing plate 2 is closed, and the microchannel reactor with high heat exchange efficiency also includes a second pressing plate 4, on which a fourth mounting hole 401 matching the first mounting hole 101 is opened, and a cooling water pipe 5 corresponding to the cooling water hole 105 is provided on the second pressing plate 4; the screw 7 is located on the inner side of the fourth mounting hole 401, and the second pressing plate 4 is in contact with the end face of the plate 1 away from the sealing plate 2, and another nut 8 is pressed against the end face of the second pressing plate 4 away from the sealing plate 2.

[0047] An annular limiting boss 501 is provided on the outer side of the middle end of the cooling water pipe 5, and a socket 402 matching the cooling water pipe 5 is opened on the second pressing plate 4. An installation groove 403 corresponding to the socket 402 is opened at one end of the second pressing plate 4 adjacent to the plate 1, and the diameter of the installation groove 403 matches the diameter of the annular limiting boss 501. The outer diameter of the cooling water pipe 5 matches the inner diameter of the cooling water hole 105. One end of the cooling water pipe 5 is installed on the inner side of the cooling water hole 105. The cooling water pipe 5 is detachably connected to the plate 1 through the second pressing plate 4, which is convenient for replacement and maintenance of the cooling water pipe 5.

[0048] A sealing gasket 10 is provided between the annular boss and the plate 1 , and the sealing gasket 10 improves the sealing performance between the cooling water pipe 5 and the plate 1 to prevent leakage of cooling water.

[0049] The outer surface of the plate 1 is provided with an oleophobic protective layer, which serves to prevent the scraping wall from being blocked by the material.

[0050] A gasket is provided between the nut 8 and the plate 1, and the gasket increases the force-bearing area between the nut 8 and the plate 1 and improves the stability of the structure.

[0051] In this embodiment, the number of plates 1 is 20, and multiple plates 1 are stacked along the thickness direction of the plates 1. The Z-shaped reaction groove 102 of one plate 1 at one end of the stacked plates 1 is sealed by the sealing plate 2, and the material hole 103 of one plate 1 at one end of the stacked plates 1 is closed. The end face of the plate 1 away from the Z-shaped reaction groove 102 closes the opening of the Z-shaped reaction groove 102 of the adjacent plate 1 to form a reaction channel.

[0052] The structure of the Z-shaped reaction tank 102 is as follows Figure 2 As shown, the Z-shaped reaction grooves 102 are arranged along the height direction of the plate 1, and the Z-shaped reaction grooves 102 are connected with adjacent Z-shaped reaction grooves 102. The upper end of the upper Z-shaped reaction groove 102 is connected with a material hole 103, and the upper end of the lower Z-shaped reaction groove 102 is connected with another material hole 103, forming an arch-shaped reaction groove as a whole. A cooling groove 104 is provided between the transverse grooves of adjacent Z-shaped reaction grooves 102, and the two ends of the cooling groove 104 are respectively connected with the cooling water pipe 5.

[0053] Working process:

[0054] One of the material pipes 302 (preferably the material pipe 302 at the lower end) is connected to the incoming material pipe 302 of the production system, and the other material pipe 302 (preferably the material pipe 302 at the upper end) is connected to the discharge material pipe 302 of the production system. One row of cooling water pipes 5 is connected to the cold water supply pipe, and the other row of cooling water pipes 5 is connected to the cold water return pipe. When in use, the material enters the multiple reaction channels in sequence through the incoming material pipe 302, the upper material pipe 302, the connecting hole 202, and the upper material hole 103. After the reaction is completed, it is transported to the next process in sequence through the lower material hole 103, the connecting hole 202, the lower material pipe 302, and the discharge material pipe 302. The cooling water in the production process is discharged in sequence through the cooling water pipe 5, the cooling water hole 105 at one end, the cooling water channel, and the cooling water hole 105 at the other end, and exchanges heat with the material through the plate 1. Compared with the traditional external heat exchange form, the heat exchange efficiency is improved, the normal reaction of the material is ensured, and the temperature consistency is ensured to improve the product quality.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A microchannel reactor with high heat exchange efficiency, characterized in that: include: A plate (1), wherein a Z-shaped reaction groove (102) is formed on one end surface of the plate (1), and a material hole (103) is formed on the plate (1) and is connected to both ends of the Z-shaped reaction groove (102). The number of the plates (1) is multiple, and the multiple plates (1) are stacked in a direction perpendicular to the end surface of the plate (1). The end surface of the plate (1) away from the Z-shaped reaction groove (102) closes the opening of the Z-shaped reaction groove (102) of the adjacent plate (1) to form a reaction channel. The plate (1) has a cooling groove (104) corresponding to the Z-shaped reaction groove (102), and cooling water holes (105) are formed at both ends of the cooling groove (104). The end surface of the plate (1) away from the Z-shaped reaction groove (102) closes the opening of the cooling groove (104) of the adjacent plate (1) to form a cooling channel. A screw rod (7), wherein the screw rod (7) passes through the plurality of plates (1) in sequence, and both ends of the screw rod (7) are respectively threadedly connected to nuts (8).

2. A microchannel reactor with high heat exchange efficiency according to claim 1, characterized in that: The plate (1) is provided with a first mounting hole (101), and the microchannel reactor with high heat exchange efficiency further comprises a positioning tube (9), the outer diameter of the positioning tube (9) matches the inner diameter of the first mounting hole (101), the positioning tube (9) sequentially passes through the first mounting holes (101) of the plurality of plates (1), and the screw (7) is mounted on the inner side of the positioning tube (9).

3. A microchannel reactor with high heat exchange efficiency according to claim 2, characterized in that: It also comprises a sealing plate (2) and a first pressing plate (3), wherein the sealing plate (2) is provided with a second mounting hole (201) matching the first mounting hole (101), and the sealing plate (2) is provided with a connecting hole (202) corresponding to the material hole (103), and the sealing plate (2) is used to close the Z-shaped reaction groove (102) of the last plate (1) among the plurality of stacked plates (1); The first pressing plate (3) is provided with a third mounting hole (301) matching the second mounting hole (201); the first pressing plate (3) is in contact with the end surface of the sealing plate (2) away from the plate (1); the screw rod (7) is located on the inner side of the second mounting hole (201) and the third mounting hole (301); one of the nuts (8) is pressed against the end surface of the first pressing plate (3) away from the sealing plate (2).

4. A microchannel reactor with high heat exchange efficiency according to claim 3, characterized in that: The number of the first mounting holes (101) is four and they are respectively located at the four corners of the plate (1); the number of the first pressing plates (3) is two, each of the first pressing plates (3) is provided with two third mounting holes (301); and the first pressing plates (3) are fixedly provided with a material tube (302) corresponding to the connection hole (202).

5. A microchannel reactor with high heat exchange efficiency according to claim 4, characterized in that: The outer diameter of the material pipe (302) matches the inner diameter of the connecting hole (202), one end of the material pipe (302) is located inside the connecting hole (202), an annular sealing groove (303) is formed at one end of the first pressing plate (3) adjacent to the sealing plate (2), a sealing ring (6) is provided in the annular sealing groove (303), and the annular sealing groove (303) is located outside the material pipe (302).

6. A microchannel reactor with high heat exchange efficiency according to claim 3, characterized in that: The material hole (103) of the plate (1) farthest from the sealing plate (2) is closed, and the microchannel reactor with high heat exchange efficiency also includes a second pressing plate (4), the second pressing plate (4) is provided with a fourth mounting hole (401) matching the first mounting hole (101), and the second pressing plate (4) is provided with a cooling water pipe (5) corresponding to the cooling water hole (105); The screw rod (7) is located on the inner side of the fourth mounting hole (401), the second pressing plate (4) is in contact with the end surface of the plate (1) away from the sealing plate (2), and the other nut (8) is pressed against the end surface of the second pressing plate (4) away from the sealing plate (2).

7. A microchannel reactor with high heat exchange efficiency according to claim 6, characterized in that: An annular limiting boss (501) is provided on the outer side of the middle end of the cooling water pipe (5); a socket (402) matching the cooling water pipe (5) is provided on the second pressure plate (4); an installation groove (403) corresponding to the socket (402) is provided on one end of the second pressure plate (4) adjacent to the plate (1); the diameter of the installation groove (403) matches the diameter of the annular limiting boss (501); the outer diameter of the cooling water pipe (5) matches the inner diameter of the cooling water hole (105); and one end of the cooling water pipe (5) is installed on the inner side of the cooling water hole (105).

8. A microchannel reactor with high heat exchange efficiency according to claim 7, characterized in that: A sealing gasket (10) is provided between the annular limiting boss and the plate (1).

9. The microchannel reactor with high heat exchange efficiency according to claim 1, characterized in that: The outer surface of the plate (1) is provided with an oleophobic protective layer.

10. The microchannel reactor with high heat exchange efficiency according to claim 1, characterized in that: A gasket is provided between the nut (8) and the plate (1).

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