An integrated microreactor based on 3D printing

Abstract

The utility model discloses an integrated microreactor based on 3D printing, comprising a mixer body with a mixing reaction channel in a spiral disc shape inside, a reaction fluid feeding channel and a reaction fluid collecting channel on the mixer body, a heat exchange channel spirally wound on the outer side of the mixing reaction channel in the mixer body, and a heat exchange medium feeding channel and a heat exchange medium collecting channel on the mixer body; the utility model integrates and integrates the mixer body, the reaction system and the heat exchange system through 3D printing, and does not require a complicated assembly process, thus shortening the processing period of actual industrial production and reducing production costs. At the same time, the continuity of 3D printing avoids the problem of liquid seepage in the channel due to loose assembly, loose fitting and loose sealing under high throughput. At the same time, the winding heat exchange channel structure can fit the mixing reaction channel to the maximum extent, realize fast and efficient heat conduction, and greatly enhance the heat exchange effect of the heat exchange medium.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment, and in particular to an integrated microreactor based on 3D printing. Background Art

[0002] A microreactor is a new type of microdevice used in many fields such as chemical industry, energy, biology, medicine and food. It can use tiny scale space to solve the problem of how to mix two or more fluids efficiently, quickly and evenly. It is an important part of the microfluidic system.

[0003] At present, the heat exchange device of the microreactor is limited by the traditional processing method. The microreactor and the heat exchange device need to be processed separately and then assembled in a complicated way. Not only is the processing difficult, the assembly process is complicated, and the total cost is high; there are also problems such as low heat exchange efficiency of the heat exchange device, poor heat exchange effect, and inability to discharge the heat generated by the reaction of the reactants in the microreactor in time;

[0004] At the same time, in the industrial production process, the system composed of the microreactor and the heat exchange device cannot meet the actual high-throughput requirements. This is because the high-throughput liquid phase reaction requires a higher liquid flow rate, which forms a higher local pressure inside the microreactor, resulting in frequent liquid seepage between the connections of different cover plates of the microreactor; and because the heat exchange device is not manufactured in an integrated manner with the microreactor and the assembly process is complicated, the heat exchange medium often leaks from the heat exchange device. Therefore, the utility model proposes an integrated microreactor based on 3D printing to solve the problems existing in the prior art. Utility Model Content

[0005] In view of the above problems, the purpose of the utility model is to propose an integrated microreactor based on 3D printing, which integrates and integrates the mixer body, reaction system and heat exchange system through 3D printing, without complicated assembly process, shortening the processing period of actual industrial production and reducing production costs. At the same time, the continuity of 3D printing avoids the problem of liquid seepage in the channel due to loose assembly, loose fit and loose sealing under high throughput;

[0006] At the same time, the winding heat exchange channel structure can fit the mixed reaction channel to the maximum extent, realize fast and efficient heat conduction, greatly enhance the heat exchange effect of the heat exchange medium, and realize precise temperature control of the channel.

[0007] To achieve the purpose of the utility model, the utility model is implemented through the following technical solutions: an integrated microchannel mixer based on 3D printing, comprising a mixer body, a reaction system and a heat exchange system, the reaction system comprising a mixing reaction channel, a reaction fluid feed channel and a reaction fluid collection channel, the mixer body is provided with a mixing reaction channel in a spiral disc shape, the mixer body is provided with a reaction fluid feed channel and a reaction fluid collection channel, the heat exchange system comprises a heat exchange channel, a heat exchange medium feed channel and a heat exchange medium collection channel, the outside of the mixing reaction channel in the mixer body is spirally wound with a heat exchange channel, and the mixer body is provided with a heat exchange medium feed channel and a heat exchange medium collection channel.

[0008] A further improvement is that the reaction fluid feed channel and the reaction fluid collecting channel are respectively connected to the two ends of the mixed reaction channel, the reaction fluid feed channels are provided with at least two groups and are connected at an angle, and the angle connection between the reaction fluid feed channels is one of T-type, Y-type and conical.

[0009] A further improvement is that the cross-sections of the mixed reaction channel, reaction fluid feed channel, reaction fluid collecting channel, heat exchange channel, heat exchange medium feed channel and heat exchange medium collecting channel are one of circular, square, elliptical and triangular, the cross-sectional dimensions of the mixed reaction channel, reaction fluid feed channel and reaction fluid collecting channel are 0.005mm-5mm, and the cross-sectional dimensions of the heat exchange channel, heat exchange medium feed channel and heat exchange medium collecting channel are 0.005mm-10mm.

[0010] A further improvement is that the reaction fluid feed channel and the reaction fluid collecting channel are arranged on different surfaces of the mixer body, the heat exchange medium feed channel and the heat exchange medium collecting channel are also arranged on different surfaces of the mixer body, and the mixer body has an outer shape of one of a rectangular parallelepiped and a cylinder.

[0011] A further improvement is that the distance between the mixing reaction channel and the outer spirally wound heat exchange channel is between 2.5 mm and 5 mm.

[0012] The beneficial effects of the utility model are as follows: the utility model integrates and forms the mixer body, reaction system and heat exchange system through 3D printing, without complicated assembly process, shortening the processing period of industrial actual production and reducing production cost. Meanwhile, the continuity of 3D printing avoids the problem of liquid seepage in the channel due to loose assembly, loose fit and loose sealing under high throughput;

[0013] At the same time, the winding heat exchange channel structure can fit the mixed reaction channel to the maximum extent, realize fast and efficient heat conduction, greatly enhance the heat exchange effect of the heat exchange medium, and realize precise temperature control of the channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a perspective structural diagram of Example 1 of the utility model.

[0015] Figure 2 This is a perspective structural diagram of Example 2 of the utility model.

[0016] Figure 3 This is a perspective structural diagram of Example 3 of the utility model.

[0017] Among them: 1. mixer body; 2. mixing reaction channel; 3. reaction fluid feed channel; 4. reaction fluid collection channel; 5. heat exchange channel; 6. heat exchange medium feed channel; 7. heat exchange medium collection channel. DETAILED DESCRIPTION

[0018] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0019] The mixer body 1, the reaction system and the heat exchange system are integrally formed from 3D printing materials such as metal, resin, and ceramic through metal 3D printing, light-curing 3D printing, and powder sintering 3D printing.

[0020] Example 1

[0021] according to Figure 1 As shown, this embodiment provides an integrated microreactor based on 3D printing, including a mixer body 1, a reaction system and a heat exchange system, the reaction system includes a mixing reaction channel 2, a reaction fluid feed channel 3 and a reaction fluid collecting channel 4, the mixer body 1 is provided with a mixing reaction channel 2 in a spiral disc shape, the mixer body is a rectangular parallelepiped, the mixer body 1 is provided with a reaction fluid feed channel 3 and a reaction fluid collecting channel 4, the reaction fluid feed channel 3 is provided with at least two groups and is connected at an angle, the reaction fluid feed channel is provided on the front side and the upper side of the mixer body, and the reaction fluid feed channel on the upper side is connected to the reaction fluid feed channel on the front side in a Y-shaped connection at an angle of 45°, and the reaction fluid collecting channel is also provided on the upper side of the mixer body;

[0022] The reaction fluid feed channel 3 and the reaction fluid collection channel 4 are respectively connected to the two ends of the mixing reaction channel 2. The reaction fluid enters the mixing reaction channel from the multiple groups of reaction fluid feed channels to flow and mix. The flow state of the reaction fluid in the reaction system, that is, the position where the Dean flow appears, can be changed by adjusting the flow rate of the reaction fluid entering, so that the reaction fluid is fully mixed;

[0023] The heat exchange system includes a heat exchange channel 5, a heat exchange medium feed channel 6 and a heat exchange medium collecting channel 7. The heat exchange channel 5 is spirally wound around the outer side of the mixing reaction channel 2 in the mixer body 1. The heat exchange channel has 12 three-dimensional spiral structures and is an equidistant spiral. The mixer body 1 is provided with a heat exchange medium feed channel 6 and a heat exchange medium collecting channel 7, and the heat exchange medium feed channel and the heat exchange medium collecting channel are respectively arranged on the front side and the upper side of the mixer body; when the heat exchange medium enters the heat exchange channel from the heat exchange medium feed channel, a secondary flow is formed, thereby greatly improving the heat exchange effect, so that the heat exchange medium takes away the heat generated by the reaction system when flowing;

[0024] The flow rate of the heat exchange medium entering the heat exchange system can be adjusted to change the flow state of the heat exchange medium, that is, the location where the secondary flow appears, so that the location can be efficiently heat exchanged to achieve a temperature control effect.

[0025] The cross-sections of the mixing reaction channel 2, the reaction fluid feed channel 3, the reaction fluid collecting channel 4, the heat exchange channel 5, the heat exchange medium feed channel 6 and the heat exchange medium collecting channel 7 are circular; the cross-section dimensions of the mixing reaction channel 2, the reaction fluid feed channel 3 and the reaction fluid collecting channel 4 are 1 mm; the cross-section radius dimensions of the heat exchange channel 5, the heat exchange medium feed channel 6 and the heat exchange medium collecting channel 7 are 1 mm.

[0026] The distance between the mixing reaction channel 2 and the outer spirally wound heat exchange channel 5 is 5 mm; the mixing reaction channel arranged in a spiral disk shape is 1.5 turns of the spiral line, the inner circle radius is 7 mm, and the outermost circle radius is 25 mm.

[0027] Example 2

[0028] according to Figure 2 As shown, this embodiment provides an integrated microreactor based on 3D printing. This embodiment provides an integrated microreactor based on 3D printing, including a mixer body 1, a reaction system and a heat exchange system. The reaction system includes a mixing reaction channel 2, a reaction fluid feed channel 3 and a reaction fluid collecting channel 4. The mixer body 1 is provided with a mixing reaction channel 2 in a spiral disc shape. The mixer body is cylindrical with a bottom radius of 40 mm and a height of 20 mm. The mixer body 1 is provided with a reaction fluid feed channel 3 and a reaction fluid collecting channel 4. The reaction fluid feed channel 3 is provided with at least two groups and is connected at an angle. The reaction fluid feed channel is provided on the upper and lower sides of the mixer body and is in a 90° T-shaped connection. The reaction fluid collecting channel is provided on the side of the mixer body;

[0029] The reaction fluid feed channel 3 and the reaction fluid collection channel 4 are respectively connected to the two ends of the mixing reaction channel 2. The reaction fluid enters the mixing reaction channel from the multiple groups of reaction fluid feed channels to flow and mix. The flow state of the reaction fluid in the reaction system, that is, the position where the Dean flow appears, can be changed by adjusting the flow rate of the reaction fluid entering, so that the reaction fluid is fully mixed;

[0030] The heat exchange system includes a heat exchange channel 5, a heat exchange medium feed channel 6 and a heat exchange medium collecting channel 7. The heat exchange channel 5 is spirally wound around the outer side of the mixing reaction channel 2 in the mixer body 1. The heat exchange medium feed channel 6 and the heat exchange medium collecting channel 7 are arranged on the mixer body 1, and the heat exchange medium feed channel and the heat exchange medium collecting channel are respectively arranged on the side and lower side of the mixer body; when the heat exchange medium enters the heat exchange channel from the heat exchange medium feed channel, a secondary flow is formed, thereby greatly improving the heat exchange effect, so that the heat exchange medium takes away the heat generated by the reaction system when flowing;

[0031] The flow rate of the heat exchange medium entering the heat exchange system can be adjusted to change the flow state of the heat exchange medium, that is, the location where the secondary flow appears, so that the location can be efficiently heat exchanged to achieve a temperature control effect.

[0032] The cross-sections of the mixing reaction channel 2, the reaction fluid feed channel 3, the reaction fluid collecting channel 4, the heat exchange channel 5, the heat exchange medium feed channel 6 and the heat exchange medium collecting channel 7 are circular; the cross-section size of the mixing reaction channel 2, the reaction fluid feed channel 3 and the reaction fluid collecting channel 4 is 0.5 mm; the cross-section radius size of the heat exchange channel 5, the heat exchange medium feed channel 6 and the heat exchange medium collecting channel 7 is 1.5 mm.

[0033] The spacing between the mixing reaction channel 2 and the outer spirally wound heat exchange channel 5 is 2.5 mm; the mixing reaction channel arranged in a spiral disk shape is 2.5 turns of spiral lines, the inner circle radius is 10 mm, and the outermost circle radius is 30 mm;

[0034] The heat exchange channel is wound with uneven density. In the front section of 0.5 turns of the mixing reaction channel, the heat exchange channel is sparsely wound for 2 turns; in the section of 0.5 to 1.5 turns of the mixing reaction channel, the heat exchange channel is densely wound for 20 turns; in the section of 1.5 to 2.5 turns of the mixing reaction channel, the heat exchange channel is sparsely wound for 6 turns. The uneven winding of the heat exchange channel further expands the curvature in the channel, enhances the secondary flow of the heat exchange medium therein, and performs efficient heat exchange at the most critical part of the mixing reaction channel, thereby improving the heat exchange effect.

[0035] Example 3

[0036] according to Figure 3As shown, this embodiment provides an integrated microreactor based on 3D printing, including a mixer body 1, a reaction system and a heat exchange system, the reaction system includes a mixing reaction channel 2, a reaction fluid feed channel 3 and a reaction fluid collecting channel 4, the inside of the mixer body 1 is provided with a mixing reaction channel 2 in a three-dimensional spiral shape in the z direction, the mixer body is a rectangular parallelepiped, and the length, width and height are 60mm, 60mm and 50mm respectively, the mixer body 1 is provided with a reaction fluid feed channel 3 and a reaction fluid collecting channel 4, the reaction fluid feed channel 3 is provided with at least two groups and is connected at an angle, the reaction fluid feed channel is provided on the left side and the upper side of the mixer body, and the reaction fluid feed channel on the upper side is connected to the reaction fluid feed channel on the front side at a 90° T-shaped connection, and the reaction fluid collecting channel is also provided at the lower end of the left side of the mixer body;

[0037] The reaction fluid feed channel 3 and the reaction fluid collection channel 4 are respectively connected to the two ends of the mixing reaction channel 2. The reaction fluid enters the mixing reaction channel from the multiple groups of reaction fluid feed channels to flow and mix. The flow state of the reaction fluid in the reaction system, that is, the position where the Dean flow appears, can be changed by adjusting the flow rate of the reaction fluid entering, so that the reaction fluid is fully mixed;

[0038] The heat exchange system includes a heat exchange channel 5, a heat exchange medium feed channel 6 and a heat exchange medium collecting channel 7. The heat exchange channel 5 is spirally wound around the outer side of the mixing reaction channel 2 in the mixer body 1. The heat exchange channel has 12 three-dimensional spiral structures and is an equidistant spiral. The mixer body 1 is provided with a heat exchange medium feed channel 6 and a heat exchange medium collecting channel 7, and the heat exchange medium feed channel and the heat exchange medium collecting channel are respectively arranged at the lower end and the upper side of the left side of the mixer body; when the heat exchange medium enters the heat exchange channel from the heat exchange medium feed channel, a secondary flow is formed, thereby greatly improving the heat exchange effect, so that the heat exchange medium takes away the heat generated by the reaction system when flowing;

[0039] The flow rate of the heat exchange medium entering the heat exchange system can be adjusted to change the flow state of the heat exchange medium, that is, the location where the secondary flow appears, so that the location can be efficiently heat exchanged to achieve a temperature control effect.

[0040] The cross-sections of the mixing reaction channel 2, the reaction fluid feed channel 3, the reaction fluid collecting channel 4, the heat exchange channel 5, the heat exchange medium feed channel 6 and the heat exchange medium collecting channel 7 are circular; the cross-section dimensions of the mixing reaction channel 2, the reaction fluid feed channel 3 and the reaction fluid collecting channel 4 are 1 mm; the cross-section radius dimensions of the heat exchange channel 5, the heat exchange medium feed channel 6 and the heat exchange medium collecting channel 7 are 1 mm.

[0041] The spacing between the mixing reaction channel 2 and the outer spirally wound heat exchange channel 5 is 5mm; the mixing reaction channel arranged in a spiral disk shape is a 2.5-turn three-dimensional spiral line, with an inner circle radius of 7mm and an outermost circle radius of 25mm; the three-dimensional spiral line of the mixing reaction channel can optimize the spatial configuration of the mixer body, maximize the space utilization, greatly improve the degree of integration, and the complex spatial structure is conducive to the emergence of Dean flow, so that the reaction fluid can be fully mixed and reacted.

[0042] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An integrated microreactor based on 3D printing, characterized in that: The invention comprises a mixer body (1), a reaction system and a heat exchange system, wherein the reaction system comprises a mixing reaction channel (2), a reaction fluid feed channel (3) and a reaction fluid collection channel (4); the mixing reaction channel (2) is provided in a spiral disk shape inside the mixer body (1); the reaction fluid feed channel (3) and the reaction fluid collection channel (4) are provided on the mixer body (1); the heat exchange system comprises a heat exchange channel (5), a heat exchange medium feed channel (6) and a heat exchange medium collection channel (7); the heat exchange channel (5) is provided on the outer side of the mixing reaction channel (2) in the mixer body (1) in a spiral manner; the heat exchange medium feed channel (6) and the heat exchange medium collection channel (7) are provided on the mixer body (1).

2. An integrated microreactor based on 3D printing according to claim 1, characterized in that: The reaction fluid feed channel (3) and the reaction fluid collection channel (4) are respectively connected to the two ends of the mixed reaction channel (2); the reaction fluid feed channels (3) are provided with at least two groups and are connected at an angle; the angle connection between the reaction fluid feed channels (3) is one of T-type, Y-type and conical.

3. The integrated microreactor based on 3D printing according to claim 1, characterized in that: The cross-sections of the mixed reaction channel (2), the reaction fluid feed channel (3), the reaction fluid collecting channel (4), the heat exchange channel (5), the heat exchange medium feed channel (6) and the heat exchange medium collecting channel (7) are one of circular, square, elliptical and triangular. The cross-section dimensions of the mixed reaction channel (2), the reaction fluid feed channel (3) and the reaction fluid collecting channel (4) are 0.005 mm to 5 mm, and the cross-section dimensions of the heat exchange channel (5), the heat exchange medium feed channel (6) and the heat exchange medium collecting channel (7) are 0.005 mm to 10 mm.

4. The integrated microreactor based on 3D printing according to claim 1, characterized in that: The reaction fluid feed channel (3) and the reaction fluid collecting channel (4) are arranged on different surfaces of the mixer body (1), and the heat exchange medium feed channel (6) and the heat exchange medium collecting channel (7) are also arranged on different surfaces of the mixer body (1). The outer shape of the mixer body (1) is one of a rectangular parallelepiped and a cylinder.

5. The integrated microreactor based on 3D printing according to claim 1, characterized in that: The distance between the mixing reaction channel (2) and the outer spirally wound heat exchange channel (5) is between 2.5 mm and 5 mm.

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