Optical microfluid reaction device with efficient light transmission and mass transfer capabilities
By designing the microfluidic reaction components and light-transmitting components of the Chinese junction-shaped elemental structure in the photomicrofluidic reaction device, combining the temperature control components and condensate management, the problems of uneven mixing and insufficient reaction in the existing devices are solved, and the problem of inequality and insufficient reaction in the existing devices is realized. Efficient pollutant degradation and improved light utilization.
Patent Information
- Application Number
- CN202323656263.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-31
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2033-12-31
AI Technical Summary
The existing photomicrofluidic reaction devices have problems of uneven mixing and insufficient reaction during the mixing and reaction, resulting in a low degradation rate of pollutants and a large light utilization rate and energy loss.
A microfluidic reaction component with a Chinese knotted element structure is designed, which can achieve one-to-two and two-in-one fluid mixing during the flow process, combine light-transmitting parts and temperature-controlling parts, and stimulate the electron-space by irradiating the catalyst through LED lamps. The hole pair produces reactive oxygen species to degrade pollutants, and is cooled and heat-managed through the use of serpentine runners and condensate.
Achieve uniform mixing and sufficient reaction of fluids, improve the degradation rate of pollutants and the utilization rate of light, reduce the influence of energy loss and temperature, and reduce the pressure drop to 10% of the heart-shaped channel. At the same time, the device can be arranged side by side. The parallel reaction increases the fluid treatment volume.
Smart Images
Figure CN222469029U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chemical engineering, in particular to an optical microfluidic reaction device with high-efficiency light and mass transfer capabilities. Background Art
[0002] The principle of photocatalysis is based on the redox ability of photocatalysts under light conditions, which can achieve the purpose of purifying pollutants, synthesizing and converting substances. Usually, photocatalytic oxidation reactions use semiconductors as catalysts and light as energy to degrade organic matter into carbon dioxide and water. Therefore, photocatalytic technology, as an efficient, safe and environmentally friendly environmental purification technology, has been recognized by the international academic community for improving indoor air quality and purifying sewage.
[0003] The study of photocatalytic degradation of organic pollutants in microchannel reactors has become a new research hotspot in the field of chemistry. Compared with chemical reactions carried out in conventional reaction vessels, the width and depth of the microchannels in microchannel reactors are relatively small, generally tens to hundreds of microns, so that the reactants can be fully mixed in a short time during the flow process. At present, there are several microchannel reaction structures for photomicrofluidic chemical reactions, such as the more classic "heart-shaped" and "island-shaped" channel structures. These flow channel parts have good mass transfer effects, but in some parts of the channels, due to internal structural limitations or other reasons, these channels will have some mixing dead zones in terms of mixing, making it difficult for the reactants in the dead zones to be fully mixed, so that the concentrated substances are not completely reacted, and if the materials cannot be effectively mixed, it is also easy to cause material waste, so that the overall micro-reaction has a low degradation rate for pollutants. In the process of photocatalytic reaction, the effective irradiation rate of light also determines the degradation performance of pollutants. By using good light-transmitting materials, the light source can be utilized more efficiently and the energy loss of light can be reduced. In addition, a certain amount of heat energy will be generated during the irradiation of light and the chemical reaction process, and excessively high ambient temperature can easily reduce the degradation efficiency of pollutants.
[0004] Therefore, those skilled in the art provide an optical microfluidic reaction device with high-efficiency light and mass transfer capabilities to solve the problems raised in the above background technology. Utility Model Content
[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art, and to propose an optical microfluidic reaction device with efficient light and mass transfer capabilities. The core component contained therein, namely the microfluidic reaction component, has a Chinese knot-shaped elementary structure, which can make the fluid split into two and two into one during the flow process, achieve the effects of impact, mixing, and then entering the next cycle, which is conducive to uniform mixing and sufficient reaction in the liquid-liquid mixing process and the gas-liquid mixing process, and solve the problems of uneven mixing and insufficient reaction. At the same time, the pressure drop can be reduced to 10% of the heart-shaped channel. At the same time, the optical microfluidic reaction device can be arranged side by side in multiples, connected to each other by water pipes and reaction fluid pipes, so as to achieve parallel reaction of multiple devices, achieve free combination of multi-unit channels, and quickly realize pilot scale-up, so as to make the fluid processing volume participating in the reaction larger.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] An optical microfluidic reaction device with high-efficiency light and mass transfer capabilities comprises a temperature control component, a microfluidic reaction component and a light-transmitting component, wherein a first groove is provided in the middle of the upper surface of the temperature control component, and a serpentine flow channel is provided inside the first groove;
[0008] A second groove is provided in the middle of the upper surface of the temperature control component, a reaction fluid inlet and a reaction fluid outlet are provided on both sides of the upper surface of the front end of the second groove, and a plurality of Chinese knot-shaped elementary structures and connecting flow paths are provided on the upper surface of the second groove;
[0009] Through the above technical solution, the upper layer of the optical microfluidic reaction device is fixed to the light-transmitting component. By using LED lamps to vertically irradiate the light-transmitting component, the catalyst entering the flow channel of the microfluidic reaction device excites electron-hole pairs under the action of light to generate active oxygen, thereby efficiently degrading pollutants. The selection of light-transmitting materials contained in the light-transmitting component is crucial. Specifically, high borosilicate glass, quartz and polymers can be used. Users can customize suitable materials in a targeted manner according to the different requirements of the chemical reactions being carried out.
[0010] Furthermore, both sides of the front outer wall of the temperature control component are provided with placement grooves, and the interior of the placement grooves is provided with reaction liquid delivery pipe interfaces, and both sides of the rear outer wall of the temperature control component are provided with water pipe interfaces;
[0011] Through the above technical solution, condensed water can be easily transported to the interior of the temperature control component through the water pipe interface, so that the device can perform the cooling function.
[0012] Furthermore, a light-transmitting material plate is disposed on the upper surface of the microfluidic reaction component, and a sealing ring is disposed on the upper surface of the light-transmitting material plate;
[0013] Through the above technical solution, the light transmission performance of the device is improved by the light-transmitting material plate, and the sealing performance of the device during use is ensured by the sealing ring.
[0014] Furthermore, a plurality of fixing screws are provided on the upper surface of the light-transmitting component, and the light-transmitting component is threadedly connected to the temperature control component through the fixing screws;
[0015] Through the above technical solution, the light-transmitting component and the temperature-controlling component are connected by using fixing screws, thereby making it convenient for workers to disassemble and install the device.
[0016] Furthermore, a reaction liquid inlet and a reaction liquid outlet are respectively provided on both sides of the upper surface of the front end of the temperature control component;
[0017] With the above technical solution, the device can perform chemical reaction on the reaction liquid through the reaction liquid inlet.
[0018] Furthermore, a condensate inlet and a condensate outlet are respectively provided on both sides of the upper surface of the rear end of the serpentine flow channel;
[0019] Through the above technical solution, the temperature control component can perform temperature control work through the condensed water inlet and the condensed water outlet.
[0020] Furthermore, a buffer gasket is provided on the upper surface of the sealing ring;
[0021] Through the above technical solution, the buffer gasket ensures the sealing when the temperature control component and the light-transmitting component are connected.
[0022] Furthermore, the front end and the rear end of the Chinese knot-shaped elementary structure are both fixedly connected with circular connecting pipes;
[0023] Through the above technical solution, the circular connecting pipe makes it easier for the Chinese knot-shaped elementary structure to mix and impact the reaction liquid.
[0024] The utility model has the following beneficial effects:
[0025] 1. The utility model proposes an optical microfluidic reaction device with efficient light and mass transfer capabilities. The core component contained therein, namely the microfluidic reaction component, has a Chinese knot-shaped elementary structure, which can make the fluid split into two and two into one during the flow process, achieve the effects of impact, mixing, and then entering the next cycle, which is conducive to uniform mixing and sufficient reaction in the liquid-liquid mixing process and gas-liquid mixing process, solves the problems of uneven mixing and insufficient reaction, and at the same time, the pressure drop can be reduced to 10% of the heart-shaped channel. At the same time, multiple optical microfluidic reaction devices can be arranged side by side and connected to each other with water pipes and reaction fluid pipes to achieve parallel reaction of multiple devices, achieve free combination of multi-unit channels, and quickly realize pilot scale-up, so as to increase the fluid processing capacity involved in the reaction.
[0026] 2. The utility model proposes an optical microfluidic reaction device with efficient light and mass transfer capabilities. The upper layer of the optical microfluidic reaction device is fixed to a light-transmitting component. By vertically irradiating the light-transmitting component with an LED lamp, the catalyst entering the flow channel of the microfluidic reaction device excites electron-hole pairs under the action of light to generate active oxygen, thereby efficiently degrading pollutants. The selection of light-transmitting materials contained in the light-transmitting component is very important. Specifically, high borosilicate glass, quartz and polymers can be used. Users can customize suitable materials in a targeted manner according to the different requirements of the chemical reaction being carried out.
[0027] 3. The utility model proposes an optical microfluidic reaction device with efficient light and mass transfer capabilities. The lower layer of the microfluidic reaction component is connected to the temperature control component. By passing condensed water into the serpentine flow channel, the heat generated in the reaction process is reduced, so that the substances in the microfluidic reaction device will not affect the degradation efficiency of pollutants due to excessively high temperature. At the same time, the serpentine arrangement of the flow channel is conducive to uniform cooling inside the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 This is an axonometric diagram of an optical microfluidic reaction device with high-efficiency light and mass transfer capabilities proposed by the utility model;
[0029] Figure 2 This is a schematic diagram of the structure of an optical microfluidic reaction device with high-efficiency light and mass transfer capabilities proposed by the utility model;
[0030] Figure 3 This is a front view of a microfluidic reaction component of an optical microfluidic reaction device with high-efficiency light and mass transfer capabilities proposed by the utility model;
[0031] Figure 4 This is a front view of a temperature control component of an optical microfluidic reaction device with high-efficiency light and mass transfer capabilities proposed by the utility model;
[0032] Figure 5 for Figure 2 Enlarged view of point A in the middle.
[0033] Legend:
[0034] 1. Temperature control component; 2. Microfluidic reaction component; 3. Light-transmitting component; 4. First groove; 5. Serpentine flow channel; 6. Reaction liquid inlet; 7. Reaction liquid outlet; 8. Condensate inlet; 9. Condensate outlet; 10. Second groove; 11. Reaction fluid inlet; 12. Reaction fluid outlet; 13. Chinese knot-shaped elementary structure; 14. Circular connecting pipe; 15. Connecting flow path; 16. Reaction liquid delivery pipe interface; 17. Water pipe interface; 18. Placement groove; 19. Buffer gasket; 20. Sealing ring; 21. Light-transmitting material plate; 22. Fixing screws. DETAILED DESCRIPTION
[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0036] Reference Figure 1-5 The utility model provides an embodiment: an optical microfluidic reaction device with high-efficiency light and mass transfer capabilities, comprising a temperature control component 1, a microfluidic reaction component 2 and a light-transmitting component 3, wherein a first groove 4 is provided in the middle of the upper surface of the temperature control component 1, and a serpentine flow channel 5 is provided inside the first groove 4;
[0037] A second groove 10 is provided in the middle of the upper surface of the temperature control component 1, and a reaction fluid inlet 11 and a reaction fluid outlet 12 are provided on both sides of the upper surface of the front end of the second groove 10, and a plurality of Chinese knot-shaped elementary structures 13 and connecting flow paths 15 are provided on the upper surface of the second groove 10;
[0038] The core component included therein, namely the microfluidic reaction component 2, has a Chinese knot-shaped elementary structure 13, which can make the fluid split into two or two into one during the flow process, achieve the effects of impact, mixing, and then entering the next cycle, which is beneficial to the uniform mixing and full reaction in the liquid-liquid mixing process and the gas-liquid mixing process, and solves the problems of uneven mixing and insufficient reaction. At the same time, the pressure drop can be reduced to 10% of the heart-shaped channel. At the same time, multiple optical microfluidic reaction devices can be arranged side by side and connected to each other with water pipes and reaction fluid pipes to achieve parallel reaction of multiple devices, free combination of multi-unit channels, and rapid realization of pilot scale-up, so as to increase the fluid processing capacity involved in the reaction.
[0039] Both sides of the front end outer wall of the temperature control component 1 are provided with placement grooves 18, and the interior of the placement grooves 18 is provided with reaction liquid delivery pipe interfaces 16. Both sides of the rear end outer wall of the temperature control component 1 are provided with water pipe interfaces 17, and the water pipe interfaces 17 facilitate the delivery of condensed water to the interior of the temperature control component 1, so that the device can perform a cooling function. The upper surface of the microfluidic reaction component 2 is provided with a light-transmitting material plate 21, and the upper surface of the light-transmitting material plate 21 is provided with a sealing ring 20. The light-transmitting material plate 21 improves the light transmission performance of the device, and the sealing ring 20 ensures the sealing of the device when it is used. The upper surface of the light-transmitting component 3 is provided with a plurality of fixing screws 22, and the light-transmitting component 3 is threadedly connected to the temperature control component 1 through the fixing screws 22. The light-transmitting component 3 and the temperature control component 1 are connected by using the fixing screws 22. The device is connected so that it is convenient for the staff to disassemble and install the device. A reaction liquid inlet 6 and a reaction liquid outlet 7 are respectively provided on both sides of the upper surface of the front end of the temperature control component 1. The reaction liquid inlet 6 makes it convenient for the device to perform a chemical reaction on the reaction liquid. A condensate inlet 8 and a condensate outlet 9 are respectively provided on both sides of the upper surface of the rear end of the serpentine flow channel 5. The condensate inlet 8 and the condensate outlet 9 make it convenient for the temperature control component 1 to perform temperature control. A buffer gasket 19 is provided on the upper surface of the sealing ring 20. The buffer gasket 19 ensures the sealing when the temperature control component 1 and the light-transmitting component 3 are connected. The front and rear ends of the Chinese knot-shaped elementary structure 13 are fixedly connected with a circular connecting pipe 14. The circular connecting pipe 14 makes it convenient for the Chinese knot-shaped elementary structure 13 to mix and impact the reaction liquid.
[0040] Working principle: When the device is in use, the core component contained therein, namely the microfluidic reaction component 2, has a Chinese knot-shaped elementary structure 13, which can make the fluid split into two or two into one during the flow process, so as to achieve the effects of impact, mixing, and then entering the next cycle. At the same time, the optical microfluidic reaction device can be arranged side by side in multiples, connected to each other by water pipes and reaction fluid pipes, so as to achieve parallel reaction of multiple devices, and then fixed to the light-transmitting component 3 through the upper layer of the optical microfluidic reaction device. By vertically irradiating the light-transmitting component 3 with an LED lamp, the catalyst entering the flow channel of the microfluidic reaction device excites electron-hole pairs under the action of light to generate active oxygen, thereby efficiently degrading pollutants. The selection of the light-transmitting material contained in the light-transmitting component 3 is very important, and specifically, high borosilicate glass, quartz and polymers can be used, and the lower layer of the microfluidic reaction component 2 is connected to the temperature control component 1, and the heat generated in the reaction process is reduced by passing condensed water into the serpentine flow channel 5.
[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. 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. An optical microfluidic reaction device with high-efficiency light and mass transfer capabilities, comprising a temperature control component (1), a microfluidic reaction component (2) and a light-transmitting component (3), characterized in that: A first groove (4) is provided in the middle of the upper surface of the temperature control component (1), and a serpentine flow channel (5) is provided inside the first groove (4); A second groove (10) is provided in the middle of the upper surface of the temperature control component (1), a reaction fluid inlet (11) and a reaction fluid outlet (12) are provided on both sides of the upper surface of the front end of the second groove (10), and a plurality of Chinese knot-shaped elementary structures (13) and connecting flow paths (15) are provided on the upper surface of the second groove (10).
2. The optical microfluidic reaction device with high efficiency of light and mass transfer according to claim 1, characterized in that: Both sides of the front end outer wall of the temperature control component (1) are provided with placement grooves (18), and the interior of the placement grooves (18) is provided with reaction liquid delivery pipe interfaces (16), and both sides of the rear end outer wall of the temperature control component (1) are provided with water pipe interfaces (17).
3. The optical microfluidic reaction device with high light and mass transfer capabilities according to claim 1, characterized in that: A light-transmitting material plate (21) is arranged on the upper surface of the microfluidic reaction component (2), and a sealing ring (20) is arranged on the upper surface of the light-transmitting material plate (21).
4. The optical microfluidic reaction device with high efficiency of light and mass transfer according to claim 1, characterized in that: A plurality of fixing screws (22) are provided on the upper surface of the light-transmitting component (3), and the light-transmitting component (3) is threadedly connected to the temperature-control component (1) via the fixing screws (22).
5. The optical microfluidic reaction device with high efficiency of light and mass transfer according to claim 1, characterized in that: A reaction liquid inlet (6) and a reaction liquid outlet (7) are respectively provided on both sides of the upper surface of the front end of the temperature control component (1).
6. The optical microfluidic reaction device with high light and mass transfer capabilities according to claim 1, characterized in that: A condensed water inlet (8) and a condensed water outlet (9) are respectively provided on both sides of the upper surface of the rear end of the serpentine flow channel (5).
7. The optical microfluidic reaction device with high light and mass transfer capabilities according to claim 3, characterized in that: A buffer washer (19) is provided on the upper surface of the sealing ring (20).
8. The optical microfluidic reaction device with high efficiency of light and mass transfer according to claim 1, characterized in that: The front end and the rear end of the Chinese knot-shaped elementary structure (13) are both fixedly connected with a circular connecting pipe (14).