Electric field driven liquid-liquid multiphase reactor based on fluidized bed

Abstract

The utility model provides an electric field driven liquid-liquid multiphase reactor based on a fluidized bed. The electric field driven liquid-liquid multiphase reactor comprises a reactor body, a mesh partition plate, inert particles, a first electrode, a second electrode and a controller, the mesh partition plate is mounted at the lower part of the reactor body, a cavity above the mesh partition plate in the reactor body is a reaction area, and the inert particles are distributed in the reaction area. The first electrode and the second electrode are respectively arranged on two sides of the inner wall of the reactor body, are positioned in the upper reaction area, and are respectively and electrically connected with the positive electrode and the negative electrode of the high-voltage power supply. And the high-voltage power supply is connected with the controller. According to the utility model, electric field force is utilized to apply acting force to charged liquid drops, the liquid drops are driven to generate violent collision and shearing action in the fluidized bed, and mass transfer and reaction between liquid and liquid are promoted. Meanwhile, the electric field force can also control the movement of the liquid drops, so that the reaction process is strengthened and controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of fluidized bed reaction equipment and process, in particular to an electric field driven liquid-liquid multiphase reactor based on a fluidized bed. Background Art

[0002] As a core technology in the field of chemical engineering, fluidized bed reactors are widely used in many industries such as chemical industry, petroleum processing, and pharmaceutical manufacturing. Their core advantage lies in the ability to achieve efficient contact and mixing between solid particles and gas or liquid media. In a fluidized bed, solid particles are suspended by the rising fluid (usually gas), showing fluid-like flow characteristics. This process is called "fluidization." This unique flow state greatly improves the efficiency of heat and mass transfer, while allowing continuous operation, improving production efficiency and reaction flexibility. However, traditional fluidized bed reactors face challenges in processing liquid-liquid multiphase systems, especially low mass transfer efficiency and uncontrollable droplet behavior, which become key factors restricting their performance.

[0003] In the liquid-liquid reaction process, due to the large difference in density between the two phases, the contact area between the liquid and the liquid is limited, which limits the effective contact of the reactants and reduces the overall reaction rate and mass transfer efficiency. In addition, the random movement of droplets in the bed is difficult to accurately control, which can easily affect the product quality and the effective control of the reaction process. Therefore, there is an urgent need for a liquid-liquid multiphase reactor with high mass transfer efficiency and high controllability. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides an electric field driven liquid-liquid multiphase reactor based on a fluidized bed, which uses electric field force to exert force on charged droplets, drives the droplets to violently collide and shear in the fluidized bed, and promotes mass transfer and reaction between liquids. At the same time, the electric field force can also control the movement of the droplets to achieve the intensification and control of the reaction process.

[0005] The utility model achieves the above technical purpose through the following technical means.

[0006] An electric field driven liquid-liquid multiphase reactor based on a fluidized bed, characterized in that it includes a reactor body, a mesh partition, inert particles, a first electrode, a second electrode and a controller; the mesh partition is installed at the lower part of the reactor body, and the cavity inside the reactor body located above the mesh partition is a reaction zone; the top and bottom of the reactor body are respectively provided with an air outlet and an air inlet connected to the reaction zone, and the lower part of the side wall of the reactor body is provided with a feed port connected to the reaction zone; the inert particles are distributed in the reaction zone; the first electrode and the second electrode are respectively installed on both sides of the inner wall of the reactor body and are located in the reaction zone, and the first electrode and the second electrode are respectively electrically connected to the positive and negative electrodes of a high-voltage power supply; the high-voltage power supply is connected to the controller.

[0007] Furthermore, the outer side of the reactor body is covered with an electric heating jacket connected to the controller.

[0008] Furthermore, in the reaction zone, the first electrode and the second electrode are vertically installed on both sides of the inner wall of the reactor body, and the third electrode and the fourth electrode are respectively arranged directly below the first electrode and the second electrode; one end of the third electrode and the fourth electrode are installed on both sides of the inner wall of the reactor body, and the other ends extend toward each other and tilt downward, and the third electrode and the fourth electrode form an angle of 30 to 45 degrees with the inner wall of the reactor body; the third electrode and the fourth electrode are respectively electrically connected to the positive and negative poles of the high-voltage power supply; the first electrode and the second electrode, the third electrode and the fourth electrode are symmetrically distributed on both sides of the inner wall of the reactor body.

[0009] Furthermore, the first electrode, the second electrode, the third electrode and the fourth electrode are plate-shaped or mesh-shaped structures.

[0010] Furthermore, the electric field strength provided by the first electrode and the second electrode, the third electrode and the fourth electrode is in the range of 100 to 1000 V / m, and the electric field frequency is in the range of 50 to 1000 Hz.

[0011] Furthermore, a temperature sensor and an electric field strength tester respectively connected to the controller are installed in the reaction zone.

[0012] Furthermore, the inert particles are one or more of glass beads, ceramic beads, and quartz sand.

[0013] Furthermore, the particle size of the inert particles is larger than the aperture of the through holes on the mesh separator.

[0014] Furthermore, the air inlet is connected to an air intake pipe, and the air intake pipe is provided with a solenoid valve connected to a controller.

[0015] Furthermore, it also includes a cyclone separator, a product collection tank and a gas storage tank; the gas outlet of the reactor body is connected to the feed inlet pipeline of the cyclone separator; the gas outlet of the cyclone separator is connected to the gas storage tank pipeline, and the discharge port of the cyclone separator is connected to the product collection tank pipeline.

[0016] The beneficial effects of the utility model are as follows:

[0017] 1. The utility model introduces an external electric field to induce charge accumulation at the droplet interface and induce electrophoresis of the droplets. This process significantly reduces the material transfer path between liquid phases. At the same time, the intervention of the electric field force actively disturbs the fluid dynamics structure inside the fluidized bed, enhances the turbulence level, effectively promotes frequent collisions and deep mixing between droplets, and greatly improves mass transfer efficiency.

[0018] 2. The electric field driven liquid-liquid multiphase reactor described in the utility model utilizes electric field force to not only promote the breakup, refinement and dispersion of droplets, greatly expand the two-phase contact interface, and improve the chemical reaction rate, but also ensures that the residence time in the reactor is extended by accurately guiding the trajectory of the droplets. Driven by the electric field force and the airflow, the droplets can maintain a good suspension state, avoid dripping, and ensure the full progress of the reaction. In addition, the dynamic regulation of the electric field force also ensures the ideal distribution of droplets in the reactor and the optimal fluidization state of the fluidized bed, laying a solid foundation for improving the overall reaction rate.

[0019] 3. The utility model controls the movement and fragmentation of droplets by adjusting the electric field intensity, and controls the reaction rate and product selectivity by adjusting the temperature, thereby optimizing the reaction process to the best state and effectively improving the reaction rate and mass transfer efficiency.

[0020] 4. The electric field driven liquid-liquid multiphase reactor described in the utility model has a wide range of applicability and excellent performance improvement capabilities, and shows extremely high application value in various liquid-liquid phase reaction scenarios such as extraction, extraction separation, reaction crystallization, etc. Its influence spans multiple fields such as pharmaceutical industry, fine chemical manufacturing, food processing and environmental protection, and provides strong technical support and innovative ideas for promoting technological innovation and efficiency upgrades in related industries. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of the electric field driven liquid-liquid multiphase reactor described in Example 1 of the utility model.

[0022] Figure 2 This is a schematic structural diagram of the electric field driven liquid-liquid multiphase reactor described in Example 2 of the utility model.

[0023] The reference numerals are as follows:

[0024] 1-reactor body; 2-mesh partition; 3-inert particles; 4-first electrode; 5-second electrode; 6-reaction zone; 7-solenoid valve; 8-gas outlet; 9-gas inlet; 10-feed port; 11-electric heating jacket; 12-third electrode; 13-fourth electrode; 14-cyclone separator; 15-product collection tank. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0026] Example 1

[0027] The electric field driven liquid-liquid multiphase reactor based on the fluidized bed of the utility model comprises a reactor body 1, a mesh partition plate 2, inert particles 3, a first electrode 4, a second electrode 5 and a controller. Figure 1 Schematic diagram of the structure of the electric field driven liquid-liquid multiphase reactor described in this embodiment.

[0028] The mesh partition 2 is installed at the lower part of the reactor body 1. The cavity above the mesh partition 2 inside the reactor body 1 is the reaction zone 6. The mesh partition 2 is evenly distributed with a number of through holes for evenly passing the nitrogen input from the air inlet 9 into the reaction zone 6. The top and bottom of the reactor body 1 are provided with an outlet 8 and an air inlet 9 connected to the reaction zone 6, and the lower part of the side wall of the reactor body 1 is provided with a feed port 10 connected to the reaction zone 6. The outer side of the reactor body 1 is sleeved with an electric heating jacket 11 connected to a controller for controlling the reaction temperature in the reactor body 1. The inert particles 3 are a number of glass beads and quartz sand distributed in the reaction zone 6, wherein the quartz sand can remove impurities and adsorb reaction intermediates, thereby improving the reaction rate and product selectivity. The first electrode 4 and the second electrode 5 are respectively vertically installed on both sides of the inner wall of the reactor body 1 and are located in the reaction zone 6. The first electrode 4 and the second electrode 5 are symmetrically distributed on both sides of the inner wall of the reactor body 1. The first electrode 4 and the second electrode 5 are electrically connected to the positive and negative electrodes of the high voltage power supply, respectively. The electric field strength provided by the first electrode 4 and the second electrode 5 is in the range of 100 to 1000 V / cm, and the electric field frequency is 50 to 1000 Hz. The high voltage power supply is connected to a controller (not shown in the figure). The electric field force generated by the first electrode 4 and the second electrode 5 is perpendicular to the direction of the fluidized bed, which is conducive to the movement of the droplets in a specific direction, promotes the breakage and collision of the droplets, and improves the mass transfer efficiency and reaction rate.

[0029] The air inlet 9 is connected to the air inlet pipe, and the air inlet pipe is provided with a solenoid valve 7 connected to the controller. The reaction zone 6 is equipped with a temperature sensor, an electric field strength tester and a flow field displayer respectively connected to the controller signal, for measuring the reaction temperature, electric field strength, and observing the velocity field of the liquid or gas, and sending the corresponding signal to the controller. Based on the above signal, the controller adjusts the reaction temperature, electric field strength and the flow rate of the fluidized bed in real time through the electric heating jacket 11, the high voltage power supply and the solenoid valve 14, so as to control the change process of the material form of the whole experiment.

[0030] In order to collect the target product discharged from the gas outlet 8, the present embodiment further provides a cyclone separator 14, a product collection tank 15 and a gas storage tank. The gas outlet 8 of the reactor body 1 is connected to the feed inlet pipeline of the cyclone separator 14, the gas outlet 8 of the cyclone separator 14 is connected to the gas storage tank pipeline, and the discharge port of the cyclone separator 14 is connected to the product collection tank 15 pipeline.

[0031] The working principle of the electric field driven liquid-liquid multiphase reactor based on the fluidized bed described in the utility model is as follows: First, glass beads, a first electrode 4 and a second electrode 5 are loaded into the reaction zone 6 of the reactor body 1, and nitrogen is introduced through the gas inlet 9 after setting the gas flow rate, reaction temperature and electric field strength, and the electrodes and electric heating jacket 11 are started at the same time; then the reaction raw materials (two-phase liquid) are injected into the reaction zone 6 of the reactor body 1 through the feed port 10, and under the action of the electric field force, the droplets are broken and collided. The broken droplets collide with the inert particles 3 to achieve liquid-solid mass transfer. After the reaction product is discharged through the gas outlet 8, the target product is separated by a cyclone separator 15 and injected into the product collection tank 16, and the remaining gas flow is passed into the gas storage tank for reuse.

[0032] Example 2

[0033] The difference between the electric field driven liquid-liquid multiphase reactor based on the fluidized bed described in the utility model and the embodiment 1 is that: in the reaction zone 6, the third electrode 12 and the fourth electrode 13 (also located in the reaction zone 6) are respectively provided below the first electrode 4 and the second electrode 5, one end of the third electrode 12 and the fourth electrode 13 are installed on both sides of the inner wall of the reactor body 1, and the other end extends toward each other and tilts downward, and the third electrode 12 and the fourth electrode 13 form an angle of 45° with the inner wall of the reactor body 1, and the third electrode 12 and the fourth electrode 13 are symmetrically distributed on both sides of the inner wall of the reactor body 1. Compared with the vertically installed first electrode 4 and the second electrode 5, the electric field force generated by the inclinedly installed third electrode 12 and the fourth electrode 13 has a certain angle with the flow direction of the fluidized bed, which can apply additional shear force to the droplets, promote the deformation and breakage of the droplets, and is conducive to the production of smaller droplets, expand the two-phase contact interface, and improve the chemical reaction rate. By using the vertically installed electrode with the inclinedly installed electrode, the reaction rate and mass transfer efficiency are higher than those of the traditional stirred reactor.

[0034] The embodiments are preferred implementations of the present invention, but the present invention is not limited to the above-mentioned implementations. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essential content of the present invention belong to the protection scope of the present invention.

Claims

1. An electric field driven liquid-liquid multiphase reactor based on a fluidized bed, characterized in that: The invention comprises a reactor body (1), a mesh partition (2), inert particles (3), a first electrode (4), a second electrode (5) and a controller; the mesh partition (2) is mounted on the lower part of the reactor body (1); the cavity inside the reactor body (1) located above the mesh partition (2) is a reaction zone (6); a gas outlet (8) and a gas inlet (9) connected to the reaction zone (6) are respectively provided on the top and bottom of the reactor body (1); a feed port (10) connected to the reaction zone (6) is provided on the lower part of the side wall of the reactor body (1); the inert particles (3) are distributed in the reaction zone (6); the first electrode (4) and the second electrode (5) are respectively mounted on both sides of the inner wall of the reactor body (1) and located in the reaction zone (6); the first electrode (4) and the second electrode (5) are respectively electrically connected to the positive and negative electrodes of a high-voltage power supply; and the high-voltage power supply is connected to the controller.

2. The fluidized bed-based electric field driven liquid-liquid multiphase reactor according to claim 1, characterized in that: The outer side of the reactor body (1) is covered with an electric heating jacket (11) connected to a controller.

3. The fluidized bed-based electric field driven liquid-liquid multiphase reactor according to claim 1, characterized in that: In the reaction zone (6), the first electrode (4) and the second electrode (5) are vertically mounted on both sides of the inner wall of the reactor body (1); a third electrode (12) and a fourth electrode (13) are respectively arranged directly below the first electrode (4) and the second electrode (5); one end of the third electrode (12) and the fourth electrode (13) are mounted on both sides of the inner wall of the reactor body (1); the other ends extend towards each other and tilt downward, and the third electrode (12) and the fourth electrode (13) form an angle of 30 to 45 degrees with the inner wall of the reactor body (1); the third electrode (12) and the fourth electrode (13) are respectively electrically connected to the positive and negative electrodes of a high-voltage power supply; the first electrode (4) and the second electrode (5), the third electrode (12) and the fourth electrode (13) are symmetrically distributed on both sides of the inner wall of the reactor body (1).

4. The fluidized bed-based electric field driven liquid-liquid multiphase reactor according to claim 3, characterized in that: The first electrode (4), the second electrode (5), the third electrode (12) and the fourth electrode (13) are plate-shaped or mesh-shaped structures.

5. The fluidized bed-based electric field driven liquid-liquid multiphase reactor according to claim 3, characterized in that: The electric field strength provided by the first electrode (4), the second electrode (5), the third electrode (12) and the fourth electrode (13) is in the range of 100 to 1000 V / m, and the electric field frequency is in the range of 50 to 1000 Hz.

6. The fluidized bed-based electric field driven liquid-liquid multiphase reactor according to claim 1, characterized in that: The reaction zone (6) is equipped with a temperature sensor and an electric field strength tester respectively connected to the controller.

7. The fluidized bed-based electric field driven liquid-liquid multiphase reactor according to claim 1, characterized in that: The inert particles (3) are one or more of glass beads, ceramic beads, and quartz sand.

8. The fluidized bed-based electric field driven liquid-liquid multiphase reactor according to claim 1, characterized in that: The particle size of the inert particles (3) is larger than the aperture of the through holes on the mesh separator (2).

9. The fluidized bed-based electric field driven liquid-liquid multiphase reactor according to claim 1, characterized in that: The air inlet (9) is connected to an air inlet pipeline, and a solenoid valve (7) connected to a controller is provided on the air inlet pipeline.

10. The fluidized bed-based electric field driven liquid-liquid multiphase reactor according to claim 1, characterized in that: It also includes a cyclone separator (14), a product collection tank (15) and a gas storage tank; the gas outlet (8) of the reactor body (1) is connected to the feed inlet pipeline of the cyclone separator (14); the gas outlet of the cyclone separator (14) is connected to the gas storage tank pipeline, and the discharge port of the cyclone separator (14) is connected to the product collection tank (15) pipeline.

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