CN114100530A - Ultrasonic oscillation gas-liquid-solid multiphase flow tubular reactor - Google Patents
Ultrasonic oscillation gas-liquid-solid multiphase flow tubular reactor Download PDFInfo
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- CN114100530A CN114100530A CN202111283720.XA CN202111283720A CN114100530A CN 114100530 A CN114100530 A CN 114100530A CN 202111283720 A CN202111283720 A CN 202111283720A CN 114100530 A CN114100530 A CN 114100530A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/08—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles
- B01J8/10—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles moved by stirrers or by rotary drums or rotary receptacles or endless belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/08—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles
- B01J8/082—Controlling processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/08—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles
- B01J8/087—Heating or cooling the reactor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00017—Controlling the temperature
- B01J2208/00106—Controlling the temperature by indirect heat exchange
- B01J2208/00168—Controlling the temperature by indirect heat exchange with heat exchange elements outside the bed of solid particles
- B01J2208/00176—Controlling the temperature by indirect heat exchange with heat exchange elements outside the bed of solid particles outside the reactor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00548—Flow
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00796—Details of the reactor or of the particulate material
- B01J2208/00823—Mixing elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00796—Details of the reactor or of the particulate material
- B01J2208/00823—Mixing elements
- B01J2208/00831—Stationary elements
- B01J2208/0084—Stationary elements inside the bed, e.g. baffles
Abstract
The invention discloses an ultrasonic oscillation gas-liquid-solid multiphase flow tube reactor, which comprises an upper end enclosure, a lower end enclosure, a shell and a plurality of vertical reaction tubes, wherein the upper end enclosure is provided with a plurality of vertical reaction tubes; the upper end enclosure and the lower end enclosure are oval end enclosures and are connected with the shell through flanges; the vertical reaction tube is fixed in the shell through a circular tube plate; a heat exchange carrier inlet and a material inlet are arranged below the shell, and a material outlet and a heat exchange carrier outlet are arranged above the shell; a baffling baffle is arranged in the shell to form a channel of the heat exchange carrier; the upper end and the lower end of the vertical reaction tube are respectively communicated with the material outlet and the material inlet; the bottom of the reactor is provided with a vibration device, and the vibration energy is transferred to the reaction materials in the vertical reaction tube through a piston; the outer wall of the vertical reaction tube is provided with an ultrasonic transducer which is arranged on the outer wall of the vertical reaction tube in a spiral line shape; the circular baffle plates and the circular thin plates are alternately arranged in the vertical reaction tube along the flowing direction of the reaction materials.
Description
Technical Field
The invention belongs to the technical field of chemical reaction equipment, and particularly relates to an ultrasonic oscillation gas-liquid-solid multiphase flow tubular reactor.
Background
In the industrial process of the scale dispersion of micro-nano particles and the scale preparation of micro-nano composite materials, the micro-nano particles in a liquid phase composite system are easy to agglomerate due to the surface energy effect and small size effect of the micro-nano particles, so that the dispersibility of micro-nano fillers in a matrix and the mass and heat transfer effect of the liquid phase composite system are influenced, and the performance of a finished material product is further influenced.
CN107243310A discloses an ultrasonic high-oscillation airflow tubular reactor, wherein ultrasonic transducers are oppositely arranged outside the wall of a vertical reaction tube, a piston surface of an oscillation device is arranged below the vertical reaction tube and is directly contacted with reaction materials, and a ring baffle is arranged in the vertical reaction tube; by the combination of an ultrasonic device and an oscillation device, cavitation bubbles are generated under the action of ultrasonic waves, and oscillation pulses are applied to form oscillation airflow, so that the dispersibility of the micro-nano material in the reactor is ensured to a certain extent; however, because the arrangement mode of the ultrasonic transducer is too simple, standing waves are formed in the tube, not only energy consumption is increased, but also the ultrasonic oscillation effect is not fully exerted; moreover, the ring baffle that sets up in the pipe is too simple to the effect that blocks of reaction material, and reaction material's mobile form is single, does not have obvious help to the dispersion of micro-nano particle. The existing ultrasonic oscillation airflow tubular reactor still has defects in design, so that the actual application effect of the reactor is poor, and further improvement is needed.
Disclosure of Invention
The invention aims to improve the defects of the existing ultrasonic high-oscillation airflow tubular reactor, further enhance the dispersibility of the reactor to micro-nano particles and increase the reaction efficiency.
In order to achieve the purpose, the technical scheme is as follows:
an ultrasonic oscillation gas-liquid-solid multiphase flow tubular reactor comprises an upper seal head (1), a lower seal head (15), a shell (2) and a plurality of vertical reaction tubes (3);
wherein the upper seal head (1) and the lower seal head (15) are elliptical seal heads and are connected with the shell (2) through flanges; the vertical reaction tube (3) is fixed in the shell (2) through a circular tube plate (7);
a heat exchange carrier inlet (13) and a material inlet (8) are arranged below the shell (2), and a material outlet (9) and a heat exchange carrier outlet (10) are arranged above the shell (2); a baffling baffle (11) is arranged in the shell (2) to form a channel of a heat exchange carrier; the upper end and the lower end of the vertical reaction tube (3) are respectively communicated with a material outlet (9) and a material inlet (8);
the bottom of the reactor is provided with a vibration device (14), and the vibration energy is transferred to the reaction materials in the vertical reaction tube (3) through a piston (19);
the outer wall of the vertical reaction tube (3) is provided with an ultrasonic transducer (4), and the ultrasonic transducer (4) is arranged on the outer wall of the vertical reaction tube (3) in a spiral line shape; the vertical reaction tube (3) is internally provided with circular ring baffles (6) and circular thin plates (5) along the flowing direction of the reaction materials in an alternating way.
According to the scheme, the diameter of the outer ring of the circular baffle plate (6) is equal to the inner diameter of the vertical reaction tube (3), and the diameter of the inner ring of the circular baffle plate (6) is half of the inner diameter of the vertical reaction tube (3); the diameter of the circular thin plate (5) is slightly larger than that of the inner ring of the circular baffle (6); the circular thin plate (5) and the circular ring baffle (6) are fixed by thin steel wires, and the ratio of the distance between the two to the inner diameter of the vertical reaction tube (3) is 1.0-2.5.
According to the scheme, the vertical reaction tube (3) is made of a stainless steel tube with the length of 0.8-1.5m, the diameter ratio of the inner diameter of the vertical reaction tube to the ultrasonic transducer (4) is 2.0-3.5, the ultrasonic power of the single ultrasonic transducer (4) is controlled to be 20-100W, and the ultrasonic frequency is 25KHz-10 MHz.
According to the scheme, the vibration device (14) comprises a driving motor (16), an eccentric wheel (17), a universal joint (18) and a piston device (19); the universal joint (18) is driven by an eccentric wheel (17) of a driving motor (16) to move up and down, a driving piston (19) reciprocates up and down, and the amplitude of the reciprocating motion is determined by the distance between two holes of the eccentric wheel (17) and is set to be 1mm, 2mm, 3mm, 5mm, 8mm and 10 mm.
Compared with the prior ultrasonic high-oscillation airflow tubular reactor, the invention has the advantages that:
the ultrasonic transducers are distributed on the outer wall of the reaction tube in a spiral line type array, standing waves can be eliminated from a physical structure, the ultrasonic treatment effect is enhanced, and the energy utilization rate is increased. Circular thin plates and circular ring baffles are distributed in the vertical reaction tube at equal intervals, and the micro-nano material can have more uniform and longer retention time than a common reaction tube under the condition of lower average flow velocity of the micro-nano material.
The vibration effect of the vibration device is combined with the circular thin plate and the circular ring baffle in the tube pass, the turbulence intensity of the material can be increased, the formed cavitation bubbles can be quickly broken under the action of high vibration pulses, new bubbles are formed and then broken, the operation is repeated in such a way, and meanwhile, the baffling baffle in the shell pass is used as an auxiliary, so that the laminar and turbulent heat transfer boundary layers inside and outside the tube can be greatly damaged, and the mixing and convective heat transfer of the multiphase flow material can be well enhanced.
Through the organic combination of the ultrasonic device and the oscillating device, namely, the high oscillation pulse generated by the oscillating device is cooperated with the ultrasonic device to form high oscillation gas-liquid microjet, and meanwhile, the baffling and mechanical oscillation effects of the circular thin plate and the circular ring baffle are assisted, so that the distribution and the dispersion uniformity of the micro-nano particle materials in a gas-liquid multiphase system can be greatly improved.
Drawings
FIG. 1 is a sectional structure view of a tubular reactor for gas-liquid-solid multiphase flow by ultrasonic oscillation according to the present invention;
FIG. 2 is a structural view of a vibration device;
FIG. 3 is a left and right sectional view of an ultrasonic transducer disposed perpendicular to the outer wall of the reaction tube;
FIG. 4 is a view showing the structure of a ring baffle and a circular thin plate in a vertical reaction tube;
FIG. 5 is a cross-sectional view of the annular baffle;
FIG. 6 is a cross-sectional view of a circular sheet;
FIG. 7 is a diagram of a nano ZnO modified phenolic resin TG prepared by an ultrasonic oscillation gas-liquid-solid multiphase flow tubular reactor of the invention;
FIG. 8 is a diagram of a nano ZnO modified phenolic resin TG prepared by an ultrasonic high-oscillation airflow tubular reactor disclosed in CN 107243310A;
the device comprises an upper end enclosure (1), a shell (2), a vertical reaction tube (3), an ultrasonic transducer (4), a circular thin plate (5), a circular ring baffle (6), a circular tube plate (7), a material inlet (8), a material outlet (9), a heat exchange carrier outlet (10), a baffle (11), a temperature control instrument (12), a heat exchange carrier inlet (13), a vibrating device (14) and a lower end enclosure (15); a driving motor (16), an eccentric wheel (17), a universal joint (18) and a piston device (19).
Detailed Description
The following examples further illustrate the technical solutions of the present invention, but should not be construed as limiting the scope of the present invention.
As shown in fig. 1, the ultrasonic oscillation gas-liquid-solid multiphase flow tubular reactor comprises an upper end enclosure (1), a shell (2), a vertical reaction tube (3), an ultrasonic transducer (4), a circular thin plate (5), a circular baffle (6), a circular tube plate (7), a material inlet (8), a material outlet (9), a heat exchange carrier outlet (10), a baffle (11), a temperature control instrument (12), a heat exchange carrier inlet (13), a vibration device (14) (comprising a driving motor (16), an eccentric wheel (17), a universal joint (18), a piston device (19) and the like) and a lower end enclosure (15); upper head (1) and low head (15) are oval head, be equipped with vibrating device in low head (15), be equipped with vibrating device (14) in low head (15), can exert high oscillation pulse to the material, whole reactor comprises tube side and shell side, lead to heat exchange carrier from barrel lower part (14) in the shell side, come out from heat exchange carrier export (10), be used for carrying out the heat transfer to the material in the tube side, in order to increase heat transfer fluid's turbulence, improve its convection current and give the coefficient of heat, baffling baffle (11) have been added in the shell side, the baffle diameter is 75% of barrel diameter. The tube pass consists of 8-12 vertical reaction tubes (3) with the length of 0.8-1.5m, the outer walls of the vertical reaction tubes (3) are provided with ultrasonic transducers (4) distributed in a spiral linear array, as shown in figure 3, the power of a single ultrasonic is controlled at 20-100W, the ultrasonic frequency is 25KHz-10MHz, the ultrasonic strengthening is carried out on materials in the tubes, and all the reaction tubes are fixed on circular tube plates at two ends. The ultrasonic transducers are distributed on the outer wall of the reaction tube in a spiral line type array, standing waves can be eliminated from a physical structure, the ultrasonic treatment effect is enhanced, and the energy utilization rate is increased.
The main body of the vertical reaction tube (3) is made of stainless steel, and the inner diameter of the vertical reaction tube is 2.0-3.5 times of the diameter of the ultrasonic transducer (4); the material flowing through the vertical reaction tube (3) flows in from a feed inlet (8) in the bottom chamber of the reactor and flows out from a discharge outlet (9) in the top chamber by a pump. Circular thin plates (5) and circular baffle plates (6) are alternately arranged in the vertical reaction tubes (3) at equal intervals, the mounting structures of the vertical reaction tubes (3), the circular thin plates (5) and the circular baffle plates (6) are respectively shown in fig. 4, 5 and 6, the outer ring diameter of each circular baffle plate is approximately equal to the inner diameter of each vertical reaction tube, the inner ring diameter of each circular baffle plate is half of the inner diameter of each vertical reaction tube, the diameter of each circular thin plate is slightly larger than the inner ring diameter of each circular baffle plate, the circular thin plates and the circular baffle plates are fixed through thin steel wires, and the ratio of the distance between each thin plate and the baffle plates to the inner diameter of each tube is 1.0-2.5. Circular thin plates and circular ring baffles are distributed in the vertical reaction tube at equal intervals, and the micro-nano material can have more uniform and longer retention time than a common reaction tube under the condition of lower average flow velocity of the micro-nano material. The vibration effect of the vibration device is combined with the circular thin plate and the circular ring baffle in the tube pass, the turbulence intensity of the material can be increased, the formed cavitation bubbles can be quickly broken under the action of high vibration pulses, new bubbles are formed and then broken, the operation is repeated in such a way, and meanwhile, the baffling baffle in the shell pass is used as an auxiliary, so that the laminar and turbulent heat transfer boundary layers inside and outside the tube can be greatly damaged, and the mixing and convective heat transfer of the multiphase flow material can be well enhanced.
The baffling baffle (11) in the shell side can not only greatly destroy laminar and turbulent heat transfer boundary layers inside and outside the pipe, but also well enhance the mixing and convection heat transfer of multiphase flow materials, and can also play a role in fixing the tubular reactor.
As shown in fig. 2, the vibration device (14) includes a driving motor (16), an eccentric wheel (17), a universal joint (18), a piston (19), etc., wherein the universal joint is driven by the eccentric wheel driven by the motor to move up and down, so as to drive the piston to reciprocate up and down, and the motion of the piston is basically in the shape of sine and cosine curves. Because the piston surface is directly contacted with the liquid in the reactor, the fluid is driven by the piston to do reciprocating motion up and down, and the amplitude of the reciprocating motion is determined by the distance between two holes of the eccentric wheel.
When the reactor works, reaction materials enter the reactor by the power provided by the pump, flow through the reaction tube provided with the ultrasonic transducer, the energy is applied by the transducer to enable the fluid to generate cavitation effect, and finally high oscillation pulse is applied to greatly increase the disturbance degree of the fluid, so that the bubbles generated in the reaction process are swept and impacted, the newly formed bubbles are quickly crushed, the effects of eliminating the bubbles and destroying the formation of slug flow are achieved, the fluid forms high oscillation airflow, and meanwhile, a heat exchange carrier is firstly introduced when the reactor works to form a loop with a temperature control device in the reactor to reach the required temperature. Through changing the frequency and the power of the ultrasonic transducer, the power of the frequency converter of the vibration device and the like, energy can be provided for materials according to needs, so that the optimal reaction condition can be found, and stable work can be carried out under the condition of ensuring high dispersion and high uniform distribution.
Example 1
As shown in figures 1 and 2, the ultrasonic oscillation gas-liquid-solid multiphase flow tubular reactor has a cylinder diameter of 0.5m, and the reactor is composed of 9 vertical reaction tubes with an internal diameter of 80mm and a diameter of 1m, and is fixed by a round tube plate in a square arrangement mode. 4 ultrasonic transducers which are spirally distributed are installed between each circular thin plate and the circular ring baffle plate on the outer wall of the vertical reaction tube at equal pitch, the diameter of each ultrasonic transducer is 25mm, the frequency of each ultrasonic transducer is adjusted to be 100KHz, and the power of each ultrasonic transducer is 48W. The diameter of the outer ring of the circular ring baffle plate in the vertical reaction tube is equal to the inner diameter of the vertical reaction tube, and the diameter of the inner ring of the circular ring baffle plate is half of the inner diameter of the vertical reaction tube; the diameter of the circular thin plate is slightly larger than that of the inner ring of the circular baffle; the round thin plate and the ring baffle are fixed by thin steel wires, and the ratio of the distance between the round thin plate and the ring baffle to the inner diameter of the vertical reaction tube is 1.0. 5 baffling baffles are arranged in the shell pass, and the diameter of each baffle is 75% of that of the cylinder; 50 ℃ hot water is introduced into the shell and used for heating and insulating materials in the reaction tube.
In specific application implementation, the ultrasonic oscillation gas-liquid-solid multiphase flow tubular reactor manufactured by the invention is utilized to synthesize the super wear-resistant nano ZnO modified phenolic resin nanocomposite, meanwhile, the ultrasonic high oscillation gas flow tubular reactor disclosed by CN107243310A is utilized, the same reactor design parameters and preparation process are adopted to prepare the super wear-resistant nano ZnO modified phenolic resin nanocomposite, the thermodynamic property and the friction resistance of the product nanocomposites of the two reactors are tested and characterized, and the superiority and the innovativeness of the invention are further verified through the analysis of characterization results. The preparation process of the super wear-resistant nano ZnO modified phenolic resin comprises the following steps:
adding titanate coupling agent, polyethylene glycol, oleic acid and nano ZnO into a stirring kettle according to a certain mass ratio for pretreatment, mechanically stirring for 0.5h, pumping reaction materials into an ultrasonic oscillation gas-liquid-solid multiphase flow tubular reactor by using a pump to provide power, controlling the flow rate of the materials to be 0.05m/s, setting the amplitude of a vibration device to be 8mm, circularly treating for 1h to obtain a suspension of the nano ZnO subjected to surface modification, adding phenolic resin with a certain proportion into the suspension, fully stirring for 0.2h in the stirring kettle, continuously pumping into the ultrasonic oscillation gas-liquid-solid multiphase flow tubular reactor, controlling the flow rate to be 0.1m/s, setting the amplitude of the vibration device to be 5mm, circularly treating for 1h, performing vacuum drying, and crushing the materials to 200 meshes to obtain the wear-resistant nano ZnO modified phenolic resin.
With the same formula and manufacturing process, the ultrasonic oscillation gas-liquid-solid multiphase flow tubular reactor and the ultrasonic high oscillation airflow tubular reactor disclosed in CN107243310A are respectively used for preparing the super wear-resistant nano particle modified phenolic resin, the super wear-resistant nano particle modified phenolic resin is further used as an adhesive for preparing the brake pad of the car brake, and meanwhile, a constant-speed friction performance test is carried out, and the test results are shown in tables 1 and 2. In addition, TG tests were performed on the ultra-wear-resistant nanoparticle modified phenolic resins synthesized by the two reactors to reflect the heat resistance thereof, and the characterization results are shown in fig. 7 and 8.
TABLE 1
TABLE 2
As can be seen from tables 1 and 2, the nanoparticle modified phenolic resin prepared by the ultrasonic oscillation gas-liquid-solid multiphase flow tubular reactor disclosed by the invention (table 1) has excellent wear resistance, and the corresponding wear rate is far lower than that of the same modified phenolic resin prepared by the ultrasonic high oscillation airflow tubular reactor disclosed by CN107243310A (table 2) at different test temperatures. Meanwhile, as can be seen from fig. 7 and 8, compared with the same modified phenolic resin prepared by an ultrasonic high-oscillation airflow tubular reactor, the nano particle modified phenolic resin prepared by the method has the advantages of higher thermal decomposition temperature, higher mass retention rate at the same temperature, and more excellent comprehensive thermodynamic property and wear resistance. Therefore, the ultrasonic oscillation gas-liquid-solid multiphase flow tubular reactor disclosed by the invention is more suitable for the scale dispersion of micro-nano particles and the scale preparation of micro-nano composite materials, and remarkable technical progress is obtained.
Claims (4)
1. An ultrasonic oscillation gas-liquid-solid multiphase flow tubular reactor comprises an upper seal head (1), a lower seal head (15), a shell (2) and a plurality of vertical reaction tubes (3); the upper seal head (1) and the lower seal head (15) are elliptical seal heads and are connected with the shell (2) through flanges; the vertical reaction tube (3) is fixed in the shell (2) through a circular tube plate (7);
a heat exchange carrier inlet (13) and a material inlet (8) are arranged below the shell (2), and a material outlet (9) and a heat exchange carrier outlet (10) are arranged above the shell (2); a baffling baffle (11) is arranged in the shell (2) to form a channel of a heat exchange carrier; the upper end and the lower end of the vertical reaction tube (3) are respectively communicated with a material outlet (9) and a material inlet (8);
the bottom of the reactor is provided with a vibration device (14), and the vibration energy is transferred to the reaction materials in the vertical reaction tube (3) through a piston (19);
the method is characterized in that: the outer wall of the vertical reaction tube (3) is provided with an ultrasonic transducer (4), and the ultrasonic transducer (4) is arranged on the outer wall of the vertical reaction tube (3) in a spiral line shape; the vertical reaction tube (3) is internally provided with circular ring baffles (6) and circular thin plates (5) along the flowing direction of the reaction materials in an alternating way.
2. The tubular reactor for ultrasonic oscillation gas-liquid-solid multiphase flow as claimed in claim 1, wherein the diameter of the outer ring of the circular baffle plate (6) is equal to the inner diameter of the vertical reaction tube (3), and the diameter of the inner ring of the circular baffle plate (6) is half of the inner diameter of the vertical reaction tube (3); the diameter of the circular thin plate (5) is slightly larger than that of the inner ring of the circular baffle (6); the circular thin plate (5) and the circular ring baffle (6) are fixed by thin steel wires, and the ratio of the distance between the two to the inner diameter of the vertical reaction tube (3) is 1.0-2.5.
3. The ultrasonic oscillation gas-liquid-solid multiphase flow tubular reactor as claimed in claim 1, wherein the vertical reaction tube (3) is made of a stainless steel tube with a length of 0.8-1.5m, the diameter ratio of the inner diameter of the vertical reaction tube to the ultrasonic transducer (4) is 2.0-3.5, the ultrasonic power of the single ultrasonic transducer (4) is controlled to be 20-100W, and the ultrasonic frequency is 25KHz-10 MHz.
4. The ultrasonic oscillation gas-liquid-solid multiphase flow tubular reactor as recited in claim 1, wherein the vibration device (14) comprises a driving motor (16), an eccentric wheel (17), a universal joint (18) and a piston device (19); the universal joint (18) is driven by an eccentric wheel (17) of a driving motor (16) to move up and down, a driving piston (19) reciprocates up and down, and the amplitude of the reciprocating motion is determined by the distance between two holes of the eccentric wheel (17) and is set to be 1mm, 2mm, 3mm, 5mm, 8mm and 10 mm.
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