A supergravity reactor with conical lifters and its use

Abstract

This invention discloses a hypergravity reactor with a conical elevator and its application. The hypergravity reactor includes a shell, a feed inlet, a rotor, a packing layer, a discharge outlet, a drain outlet, and a conical elevator. The feed inlet includes a first feed inlet and a second feed inlet. The conical elevator includes a conical lifting cavity, spiral blades, a flange, and a central column. The conical lifting cavity is conical in shape, wider at the top and narrower at the bottom, with the upper port diameter larger than the lower port diameter. The sidewall of the conical lifting cavity is inclined relative to the rotation axis of the rotor, and the angle between the sidewall of the conical lifting cavity and the rotation axis is an inclination angle. θ When the tilt angle θ At angles greater than approximately 5.5°, increasing the rotational speed no longer exacerbates particle adhesion; instead, it promotes particle detachment along the inclined wall, enabling the elevator to achieve self-cleaning capabilities at high speeds. Compared to traditional cylindrical elevators, the conical elevator of this invention can reduce the adhesion rate of solid particles by approximately 50% to 91% and increase the liquid-solid mass transfer coefficient by approximately 3 times.

Description

Technical Field

[0001] This invention relates to the field of hypergravity devices; specifically, it relates to a hypergravity reactor with a conical lifter and its application. Background Technology

[0002] Gas-liquid and gas-liquid-solid reaction systems are widely used in industrial production such as petrochemicals and fine chemicals. Traditional reactors often suffer from poor mixing and limited mass transfer. Currently, by installing a lifter in a hypergravity reactor, the process of gas-liquid and gas-liquid-solid reactions under hypergravity conditions can be enhanced: a motor drives a rotor and a lifter located below the rotor to rotate, lifting the liquid or solid-containing liquid in the reactor to the packing zone for cutting and dispersion, generating tiny droplets, significantly increasing the gas-liquid contact area, and promoting mixing and mass transfer.

[0003] However, for solid-containing reaction systems, the adhesion of solid particles to the walls of the elevator is a common and serious problem affecting operation. Studies have shown that in traditional cylindrical elevators, the cavity sidewalls are parallel to the axis of rotation. Under centrifugal force, particles are radially pressed against the vertical wall. The normal contact force and maximum static friction increase with increasing rotational speed, hindering upward transport of particles along the wall and making them more prone to adhesion and accumulation. Adhesion and accumulation weaken the dispersion of solid particles in the liquid phase, reduce the liquid-solid mass transfer rate and reaction efficiency, and may cause blockage. Therefore, there is an urgent need to develop an elevator that can suppress solid particle adhesion and has self-cleaning capabilities at high rotational speeds, as well as a supergravity reactor equipped with such an elevator. Summary of the Invention

[0004] The first technical problem this application aims to solve is to provide a hypergravity reactor with a conical lifter. The hypergravity device of this invention designs the lifting chamber as a conical structure, wider at the top and narrower at the bottom. Its inclined sidewalls cause the centrifugal force acting on the particles to generate a tangential component along the wall direction; when the inclination angle... i At angles greater than approximately 5.5°, increasing the rotational speed no longer exacerbates particle adhesion; instead, it promotes particle detachment along the inclined wall, enabling the elevator to possess self-cleaning capabilities at high speeds. Compared to traditional cylindrical elevators, the conical elevator of this invention can reduce the adhesion rate of solid particles by approximately 50% to 91%.

[0005] The second technical problem to be solved by this application is to provide an application of the above-mentioned supergravity reactor with a conical lifter in a gas-liquid / gas-liquid-solid reaction system.

[0006] To solve the first technical problem mentioned above, the present invention adopts the following technical solution: A supergravity reactor with a conical elevator includes a shell, a feed inlet, a rotor, a packing layer, a discharge outlet, a drain outlet, and a conical elevator. The feed inlet includes a first feed inlet and a second feed inlet. The first feed inlet is located on the upper part of the side wall of the housing, and the second feed inlet is located on the top of the housing. The discharge outlet is located in the middle of the side wall of the housing. The drain outlet is located at the bottom of the housing. A temperature control jacket is provided inside the housing. The upper end face of the rotor is fixedly connected to the motor output shaft, and the lower end face is fixedly connected to the conical lifter. The packing layer is fixed in the rotor. The conical lifter includes a conical lifting cavity, a spiral blade, a flange, and a central column; The conical lifting cavity is tapered, wider at the top and narrower at the bottom, with the upper port diameter larger than the lower port diameter. The sidewall of the conical lifting cavity is inclined relative to the rotation axis of the rotor, and the angle between the sidewall of the conical lifting cavity and the rotation axis is the inclination angle. i ; The upper end of the conical lifting cavity is fixedly connected to the lower end face of the rotor via a flange; The spiral blades are arranged in a spiral pattern within the conical lifting cavity and are fixedly connected to the central column at the longitudinal center of the conical lifting cavity and the inner wall of the lifting cavity.

[0007] Preferably, the tilt angle i The tilt angle is 6° to 45°; preferably, the tilt angle is... i The range is 8° to 20°.

[0008] Preferably, the ratio of the lower port diameter to the upper port diameter of the conical lifting cavity is 0.2 to 0.8; more preferably, the ratio of the lower port diameter to the upper port diameter of the conical lifting cavity is 0.5.

[0009] Preferably, the inner wall of the conical lifting cavity is provided with a hydrophobic modified layer, and the contact angle between the surface of the hydrophobic modified layer and the working medium is not less than 100°; more preferably, the contact angle is 100°~150°; even more preferably, the hydrophobic modified layer is a fluorinated siloxane coating.

[0010] Preferably, the ratio of the installation height of the conical elevator to the height of the hypergravity reactor is 0.1 to 0.4.

[0011] Preferably, the ratio of the length of the conical elevator to the height of the hypergravity reactor is 0.3 to 0.75.

[0012] Preferably, the ratio of the pitch of the spiral blade to the length of the conical elevator is 0.1 to 0.4.

[0013] Preferably, the ratio of the diameter of the central column to the diameter of the upper port of the conical lifting cavity is 0.1 to 0.4.

[0014] To solve the second technical problem mentioned above, the present invention adopts the following technical solution: The application of the above-mentioned centrifugal reactor with a conical lifter in a gas-liquid / gas-liquid-solid reaction system includes the following steps: S1. Raw materials and catalysts are fed into the hypergravity reactor through the first and second feed inlets. The hypergravity reactor is turned on, the temperature control jacket is opened to heat the materials, and the discharge port and the empty outlet are closed. S2. Monitor the reaction pressure. When the pressure inside the reactor drops significantly, it indicates that the reaction has started. At this time, open the discharge port to continuously introduce raw materials and continuously collect the materials. S3. After the reaction is complete, close the feed port and open the discharge port to slowly release the pressure. After the pressure is at atmospheric pressure, open the bottom drain port to remove the remaining liquid or solid-liquid mixture from the reactor.

[0015] Preferably, in step 1), the ratio of the feeding height inside the hypergravity reactor to the height of the inner cavity of the hypergravity reactor is 0.3 to 0.75.

[0016] Any range described in this invention includes the endpoint, any value between the endpoints, and any subrange consisting of the endpoint or any value between the endpoints.

[0017] Unless otherwise specified, all raw materials used in this invention can be obtained commercially, and the equipment used in this invention can be conventional equipment in the relevant field or refer to existing technology in the relevant field.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1) This invention designs the lifting cavity as a conical structure, wider at the top and narrower at the bottom. Its inclined sidewalls cause the centrifugal force acting on the particles to generate a tangential component along the wall direction; when the inclination angle... i At angles greater than approximately 5.5°, increasing the rotational speed no longer exacerbates particle adhesion; instead, it promotes particle detachment along the inclined wall, enabling the elevator to possess self-cleaning capabilities at high speeds. Compared to traditional cylindrical elevators, the conical elevator of this invention can reduce the adhesion rate of solid particles by approximately 50% to 91%.

[0020] 2) The present invention provides a hydrophobic modified layer on the inner wall of the conical lifting cavity to reduce the interfacial free energy between the wall and the particles and reduce solid-wall adhesion; its synergistic effect with the conical geometry further inhibits particle adhesion.

[0021] 3) Since particle adhesion is effectively suppressed, more solid particles can be suspended in the liquid phase to participate in the reaction, significantly increasing the liquid-solid contact area. This invention can improve the liquid-solid mass transfer coefficient by about 3 times compared with the traditional structure, which is beneficial to improving the reaction efficiency.

[0022] 4) The conical elevator of the present invention is connected to the rotor through a flange, which makes it easy to install, disassemble and clean and maintain; the material inside the reactor is self-circulated through the elevator, eliminating the need for external pumps and other circulation equipment, reducing equipment investment and preventing the reactants from being contaminated. Attached Figure Description

[0023] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Figure 1 This is a schematic diagram of the structure of the supergravity reactor with a conical lifter in this invention; Figure 2 This is a schematic diagram of the conical lifter in this invention; Figure 3 This is a comparison curve of particle adhesion rate versus rotational speed between the conical elevator of the present invention and a traditional elevator; Figure 4 This is a comparison curve of the liquid-solid mass transfer coefficient of the conical elevator of the present invention and the traditional elevator as a function of rotational speed.

[0024] The numbers in the diagram are labeled as follows: 1-shell, 2-temperature control jacket, 3-first feed inlet, 4-packing layer, 5-second feed inlet, 6-rotor, 7-discharge port, 8-conical elevator, 9-drain port, 10-conical lifting cavity, 11-spiral blade, 12-flange, 13-center column. Detailed Implementation

[0025] To more clearly illustrate the present invention, the following description, in conjunction with preferred embodiments, further clarifies the invention. Those skilled in the art should understand that the specific descriptions below are illustrative rather than restrictive, and should not be construed as limiting the scope of protection of the present invention.

[0026] See Figure 1-Figure 2 As shown, as one aspect of the present invention, a supergravity reactor with a conical elevator includes a shell 1, a feed inlet, a rotor 6, a packing layer 4, a discharge outlet 7, a drain outlet 9, and a conical elevator 8. The feed inlet includes a first feed inlet 3 and a second feed inlet 5. The first feed inlet 3 is located on the upper part of the side wall of the housing 1, and the second feed inlet 5 is located on the top of the housing 1. The discharge outlet 7 is located in the middle of the side wall of the housing 1. The drain outlet 9 is located at the bottom of the housing. A temperature control jacket is provided inside the housing 1. The upper end face of the rotor 6 is fixedly connected to the motor output shaft, and the lower end face is fixedly connected to the conical lifter 8. The packing layer 4 is fixed in the rotor 6. The conical lifter 8 includes a conical lifting cavity 10, a spiral blade 11, a flange 12, and a central column 13; The conical lifting cavity 10 is conical in shape, wider at the top and narrower at the bottom, with the upper port diameter larger than the lower port diameter. The sidewall of the conical lifting cavity 10 is inclined relative to the rotation axis of the rotor, and the angle between the sidewall of the conical lifting cavity 10 and the rotation axis is the inclination angle. i ; The upper end of the conical lifting cavity 10 is fixedly connected to the lower end face of the rotor 6 via a flange 12; The spiral blades 11 are arranged in a spiral pattern within the conical lifting cavity 10 and are fixedly connected to the central column 13 at the longitudinal center of the conical lifting cavity 10 and the inner wall of the lifting cavity 10.

[0027] According to certain embodiments of the present invention, the tilt angle i The tilt angle is 6° to 45°; preferably, the tilt angle is... i The range is 8° to 20°.

[0028] According to some embodiments of the present invention, the ratio of the lower port diameter to the upper port diameter of the tapered lifting cavity 10 is 0.2 to 0.8; more preferably, the ratio of the lower port diameter to the upper port diameter of the tapered lifting cavity is 0.5.

[0029] According to certain embodiments of the present invention, the inner wall of the conical lifting cavity 10 is provided with a hydrophobic modified layer, and the contact angle between the surface of the hydrophobic modified layer and the working medium is not less than 100°; more preferably, the contact angle is 100°~150°; more preferably, the hydrophobic modified layer is a fluorinated siloxane coating.

[0030] According to certain embodiments of the present invention, the ratio of the installation height of the conical elevator 8 to the height of the hypergravity reactor is 0.1 to 0.4. The installation height of the conical elevator refers to the vertical distance between the bottom of the elevator and the lowest point of the inner wall of the reactor.

[0031] According to certain embodiments of the present invention, the ratio of the length of the conical elevator 8 to the height of the hypergravity reactor is 0.3 to 0.75. The length of the conical elevator refers to the distance from the bottom of the elevator to the upper end of the elevator flange.

[0032] According to certain embodiments of the present invention, the ratio of the pitch of the spiral blade 11 to the length of the conical lifter 8 is 0.1 to 0.4.

[0033] According to certain embodiments of the present invention, the ratio of the diameter of the central column 13 to the diameter of the lower port of the conical lifting cavity 10 is 0.1 to 0.4.

[0034] As another aspect of the present invention, the application of the above-mentioned centrifugal reactor with a conical lifter in a gas-liquid / gas-liquid-solid reaction system includes the following steps: S1. Raw materials and catalysts are fed into the hypergravity reactor through the first and second feed inlets. The hypergravity reactor is turned on, the temperature control jacket is opened to heat the materials, and the discharge port and the empty outlet are closed. S2. Monitor the reaction pressure. When the pressure inside the reactor drops significantly, it indicates that the reaction has started. At this time, open the discharge port to continuously introduce raw materials and continuously collect the materials. S3. After the reaction is complete, close the feed port and open the discharge port to slowly release the pressure. After the pressure is at atmospheric pressure, open the bottom drain port to remove the remaining liquid or solid-liquid mixture from the reactor.

[0035] According to certain embodiments of the present invention, in step 1), the ratio of the feeding height to the inner cavity height of the hypergravity reactor is 0.3 to 0.75. The feeding height refers to the vertical distance between the liquid surface of the material inside the reactor and the lowest point of the reactor's inner wall; the inner cavity height refers to the vertical distance between the reactor's top cover and the lowest point of the reactor's inner wall. Example 1

[0036] A supergravity reactor with a conical elevator includes a shell 1, a feed inlet, a rotor 6, a packing layer 4, a discharge outlet 7, a drain outlet 9, and a conical elevator 8. The feed inlet includes a first feed inlet 3 and a second feed inlet 5. The first feed inlet 3 is located on the upper part of the side wall of the housing 1, and the second feed inlet 5 is located on the top of the housing 1. The discharge outlet 7 is located in the middle of the side wall of the housing 1. The drain outlet 9 is located at the bottom of the housing. A temperature control jacket is provided inside the housing 1. The upper end face of the rotor 6 is fixedly connected to the motor output shaft, and the lower end face is fixedly connected to the conical lifter 8. The packing layer 4 is fixed in the rotor 6. The conical lifter 8 includes a conical lifting cavity 10, a spiral blade 11, a flange 12, and a central column 13; The conical lifting cavity 10 is conical in shape, wider at the top and narrower at the bottom, with the upper port diameter larger than the lower port diameter. The sidewall of the conical lifting cavity 10 is inclined relative to the rotation axis of the rotor, and the angle between the sidewall of the conical lifting cavity 10 and the rotation axis is the inclination angle. i ; The upper end of the conical lifting cavity 10 is fixedly connected to the lower end face of the rotor 6 via a flange 12; The spiral blades 11 are arranged in a spiral pattern within the conical lifting cavity 10 and are fixedly connected to the central column 13 at the longitudinal center of the conical lifting cavity 10 and the inner wall of the lifting cavity 10. The tilt angle i It is 12°; The ratio of the lower port diameter to the upper port diameter of the conical lifting cavity 10 is 0.5; The inner wall of the conical lifting cavity 10 is provided with a hydrophobic modification layer, and the contact angle between the surface of the hydrophobic modification layer and the working medium is 130°; the hydrophobic modification layer is a fluorinated siloxane coating. The ratio of the installation height of the conical lifter 8 to the height of the hypergravity reactor is 0.14; The ratio of the length of the conical elevator 8 to the height of the hypergravity reactor is 0.57; The ratio of the pitch of the spiral blade 11 to the length of the conical lifter 8 is 0.28; The ratio of the diameter of the central column 13 to the diameter of the lower port of the conical lifting cavity 10 is 0.14.

[0037] The anti-adhesion performance test of the above-mentioned ultragravity reactor with a conical elevator includes the following steps: 1) Select a cone-shaped lifter (PCO) made of epoxy resin 3D printed and hydrophobically modified, with an upper port diameter of approximately 30 mm, a lower port diameter of approximately 15 mm, a height of approximately 35 mm, and an inclination angle of approximately [missing information]. i Approximately 14°, the inner wall is treated with a fluorinated siloxane coating, increasing the contact angle with the working medium from 70° to 118°; 2) Copper powder (particle size 1~33 μm) and 0.5 mol / L sulfuric acid, 3×10 -3 An aqueous solution of potassium dichromate in mol / L constitutes a liquid-solid model system, which is added to a 1 L volume hypergravity reactor at a mass concentration of 0.2 wt.%. 3) Run at different speeds, measure the mass difference of the adhering particles before and after the elevator test, and calculate the particle adhesion rate. or It is compared with traditional column lifters.

[0038] See conclusions Figure 3 As shown: the adhesion rate of the conical lifter (PCO) of the present invention increases with increasing rotor speed. or Instead of rising, it falls, demonstrating self-cleaning properties, unlike traditional column-shaped elevators. or The particle adhesion rate increases significantly with increasing rotational speed; the particle adhesion rate of the conical elevator of the present invention is reduced by about 50% to 91% compared with the traditional cylindrical elevator. Example 2

[0039] use Figure 1 The liquid-solid mass transfer performance test of the supergravity reactor with a conical elevator shown in the present invention includes the following steps: Using the same conical elevator and copper dissolution liquid-solid system as in Example 1, the liquid-solid mass transfer coefficients under different conditions were determined by the copper dissolution method. k LS (and volumetric mass transfer coefficient) k LSa And compare it with the traditional structure.

[0040] See conclusions Figure 4 As shown, the liquid-solid mass transfer coefficient of the conical elevator of the present invention is significantly higher than that of the traditional structure, reaching up to about 3 times that of the traditional structure, proving that the present invention can significantly enhance liquid-solid mass transfer. Comparative Example 1

[0041] The remaining conditions are the same as in Example 1, except that the conical lifter is replaced with a traditional cylindrical lifter that has not been hydrophobically modified.

[0042] The results show that its adhesion rate or It increases with increasing rotational speed, and is significantly higher than the conical lifter of the present invention at all rotational speeds, with the lowest liquid-solid mass transfer coefficient. Comparative Example 2

[0043] The remaining conditions are the same as in Example 1, except that the conical lifter is replaced with a hydrophobically modified cylindrical lifter.

[0044] The results show that although hydrophobic modification can reduce some adhesion, the adhesion rate still increases with the increase of rotation speed because the cavity sidewall is vertical. The effect is not as good as the conical structure of the present invention, indicating that hydrophobic modification alone is not enough to solve the problem of particle adhesion at high speed. Comparative Example 3

[0045] The remaining conditions are the same as in Example 1, except that a non-hydrophobic modified conical lifter is used.

[0046] The results show that its anti-adhesion and mass transfer properties are better than those of the columnar structure, but not as good as those of the hydrophobic modified structure of this invention, indicating that the best effect can be achieved by combining the conical geometry and hydrophobic modification. Example 3

[0047] use Figure 1 The centrifugal reactor with a conical lifter shown in this invention was used in a performance test experiment for the catalytic hydrogenation reaction of p-nitroanisole. The steps are as follows: The performance of the hypergravity reactor of this invention was tested by applying it to the catalytic hydrogenation of p-nitroanisole (PNA) to p-aminoanisole (PA). The reaction performance of the hypergravity reactor was compared with that of the conventional columnar elevator when a conical elevator was installed. The specific experimental steps are as follows: 1) Dissolve a certain amount of PNA in methanol and feed it into the reactor through the first feed port 3. Select Raney nickel particles as the catalyst for this reaction and feed them into the reactor through the second feed port 5. Turn on the motor, open the temperature control jacket 2 to heat the material, and close the discharge port 7 and the drain port 9. 2) Monitor the reaction pressure. When the pressure inside the reactor drops significantly, it indicates that the reaction has started. At this time, open the discharge port 7 and continuously feed the raw material through the first feed port 3, and continuously collect the material. 3) After the reaction is complete, close all feed ports and open the discharge port 7 to slowly release the pressure. After the pressure is at atmospheric pressure, open the drain port 9 to remove the remaining liquid or solid-liquid mixture from the reactor.

[0048] Finally, at a rotation speed of 1500 r / min and with all other conditions being exactly the same, the product consumption rate was tested with and with the conical elevator and the traditional cylindrical elevator. After 60 min, the reactant concentrations in the reactor (initially 100%) were 12% and 40%, respectively, proving that the conical elevator can effectively improve the chemical reaction rate.

[0049] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is impossible to exhaustively list all embodiments here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A supergravity reactor with a conical elevator, characterized in that: Includes housing, inlet, rotor, packing layer, outlet, drain outlet, and conical elevator; The feed inlet includes a first feed inlet and a second feed inlet, the first feed inlet being located on the upper part of the side wall of the housing, and the second feed inlet being located on the top of the housing; the discharge outlet is located in the middle of the side wall of the housing; the drain outlet is located at the bottom of the housing; a temperature control jacket is provided inside the housing; the upper end face of the rotor is fixedly connected to the motor output shaft, and the lower end face is fixedly connected to the conical lifter, with the packing layer fixed in the rotor; the conical lifter includes a conical lifting cavity, spiral blades, a flange, and a central column; The conical lifting cavity is tapered, wider at the top and narrower at the bottom, with the upper port diameter larger than the lower port diameter. The sidewall of the conical lifting cavity is inclined relative to the rotation axis of the rotor, and the angle between the sidewall of the conical lifting cavity and the rotation axis is the inclination angle. θ ; The upper end of the conical lifting cavity is fixedly connected to the lower end face of the rotor via a flange; The spiral blades are arranged in a spiral pattern within the conical lifting cavity and are fixedly connected to the central column at the longitudinal center of the conical lifting cavity and the inner wall of the lifting cavity.

2. The hypergravity reactor with a conical lifter according to claim 1, characterized in that: The tilt angle θ The tilt angle is 6° to 45°; preferably, the tilt angle is... θ The range is 8° to 20°.

3. The hypergravity reactor with a conical lifter according to claim 1, characterized in that: The ratio of the lower port diameter to the upper port diameter of the conical lifting cavity is 0.2 to 0.8; more preferably, the ratio of the lower port diameter to the upper port diameter of the conical lifting cavity is 0.

5.

4. The hypergravity reactor with a conical lifter according to claim 1, characterized in that: The inner wall of the conical lifting cavity is provided with a hydrophobic modified layer, and the contact angle between the surface of the hydrophobic modified layer and the working medium is not less than 100°; more preferably, the contact angle is 100°~150°; more preferably, the hydrophobic modified layer is a fluorinated siloxane coating.

5. The hypergravity reactor with a conical lifter according to claim 1, characterized in that: The ratio of the installation height of the conical elevator to the height of the hypergravity reactor is 0.1 to 0.

4.

6. The hypergravity reactor with a conical lifter according to claim 1, characterized in that: The ratio of the length of the conical elevator to the height of the hypergravity reactor is 0.3 to 0.

75.

7. The hypergravity reactor with a conical lifter according to claim 1, characterized in that: The ratio of the pitch of the spiral blade to the length of the conical elevator is 0.1 to 0.

4.

8. The hypergravity reactor with a conical lifter according to claim 1, characterized in that: The ratio of the diameter of the central column to the diameter of the upper port of the conical lifting cavity is 0.1 to 0.

4.

9. The application of a supergravity reactor with a conical lifter as described in any one of claims 1-8 in a gas-liquid / gas-liquid-solid reaction system, characterized in that, Includes the following steps: S1. Raw materials and catalysts are fed into the hypergravity reactor through the first and second feed inlets. The hypergravity reactor is turned on, the temperature control jacket is opened to heat the materials, and the discharge port and the empty outlet are closed. S2. Monitor the reaction pressure. When the pressure inside the reactor drops significantly, it indicates that the reaction has started. At this time, open the discharge port to continuously introduce raw materials and continuously collect the materials. S3. After the reaction is complete, close the feed port and open the discharge port to slowly release the pressure. After the pressure is at atmospheric pressure, open the bottom drain port to remove the remaining liquid or solid-liquid mixture from the reactor.

10. The application according to claim 9, characterized in that: In step 1), the ratio of the feeding height inside the hypergravity reactor to the height of the inner cavity of the hypergravity reactor is 0.3 to 0.75.

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