CN216538380U - Continuous ozone oxidation reactor - Google Patents

Abstract

The utility model discloses a continuous ozone oxidation reactor, which relates to the technical field of gas-liquid mixing reactors and comprises a magnetic stirrer, wherein a temperature transmitter is arranged on the surface of the magnetic stirrer, a magnetic stirrer mounting seat is fixed at the lower end of the magnetic stirrer, a sight glass is arranged on the surface of the magnetic stirrer mounting seat, a reactor upper flange is fixed at the lower end of the sight glass, a reactor barrel is fixed at the lower end of the reactor upper flange, and the equipment is provided with a sight glass structure, so that the reaction process and process optimization can be conveniently and visually observed; compared with bubbling type mixing of a column reactor, the reactor adopts a stirring mode to force gas-liquid mixing, so that reactants are mixed more efficiently and more fully, and the mixing degree of materials can be controlled by changing the stirring rotating speed; the reactor has compact structure, and the manufacturing process is relatively simple, the manufacturing is exquisite and the structure is compact in view of the characteristics of the kettle reactor.

Description

Continuous ozone oxidation reactor

Technical Field

The utility model relates to the technical field of gas-liquid mixing reactors, in particular to a continuous ozone oxidation reactor.

Background

The ozone oxidation reaction is one of the very important reactions in organic synthesis, and is one of the important means for realizing the conversion of an olefin functional group to an aldehyde functional group, but due to the toxicity of ozone, the violent exothermicity of the reaction, the easy explosiveness and other factors, the reaction has certain difficulty in equipment manufacture and process operation, and is used carefully by people in organic synthesis at present; one of the currently commonly used ozone oxidation reactors is a column reactor, which is provided with an upper section and a lower section, wherein a sintering plate and a finned tube are arranged in a lower section reaction column, gas materials are introduced from the bottom of the reaction column, liquid materials are introduced from a side port of the reaction column close to the bottom, gas and liquid are mixed by bubbling of gas, reaction products are output from a side port of the reaction column close to the top, residual gas is discharged from the top of the reaction column, a jacket for controlling temperature is arranged outside the reaction column, a thermometer for measuring the temperature in the column is arranged at a proper position, the other type is a kettle type reaction container, ozone gas is introduced into a stirred solution through an insertion tube to carry out batch intermittent ozonization reaction, and the large margin of the container is kept in the process to ensure the safety of the reaction.

The existing various ozone oxidation reactors, column reactors, are one of continuous reaction equipment, and although the reaction requirements can be met, the reactor has many defects and shortcomings:

1. the overall dimension is large, and the overall height is too high to reduce the height due to the characteristics of the column reactor and the purpose of ensuring the sufficient mixing of materials;

2. the material mixing is insufficient, dead angles easily exist, and the column reactor achieves the purpose of material mixing by utilizing the bubbling property of gas, so the dead angles are easily formed in the rising process of bubbles, and the material mixing efficiency is reduced;

3. the manufacturing process is complex, and because the existing column reactor is internally provided with a plurality of finned tubes and a plurality of sintered plates, the difficulty and complexity of manufacturing and installation are increased;

4. the cleaning difficulty is mainly embodied in that a plurality of finned tubes are arranged in the reaction column, and each finned tube is provided with a plurality of fins, so that the cleaning difficulty in the interior of the equipment is greatly increased;

5. the service life is short, and the gas-liquid mixing in the column reactor is mainly concentrated on the fins of the finned tubes, so that the gas-liquid junction is easy to corrode, and the service life of equipment is shortened;

6. the safety performance is not high, and in view of the characteristics of reactants, the gas discharged from the top contains flammable and explosive components, while ozone and oxygen have strong oxidizing property and are easy to cause explosion danger.

The existing tank reactor is also a reaction device which is widely applied in the research and development process, but still has larger potential safety hazard to influence the production efficiency.

1. The size of the reactor is large, most of the kettle reactors are batch reactors, so that the volume of the reactor vessel is usually enlarged to realize the batch output in order to ensure the production output, but the enlargement of the volume of the reactor vessel and the increase of the batch loading bring huge risks to the production safety, so the reactor vessel cannot be enlarged infinitely, and the batch capacity of ozonized products is limited.

2. The contact of ozone in the reaction liquid is dispersed through breather pipe gas distributor to the ozone of kettle-type reactor, and the rethread stirring strengthens the effect of gas-liquid mixture and then promotes going on of reaction, actually in production owing to receive mechanical equipment's characteristic restriction and stirring that can not be quick, the effect that leads to the gas-liquid mixture is than poor, and then influences the efficiency of reaction, lead to a lot of excessive ozone not can participate in the reaction and discharge the reaction system, cause the innocent treatment cost increase of later stage ozone.

3. The heat transfer performance of kettle-type reactor is than relatively poor, and because the kettle-type structure has injectd its area volume ratio for little, stirring heat transfer effect is poor, can not in time shift away a large amount of heats that produce among the ozone reaction process, often need to press from both sides the temperature of cover with the reaction and fall to very low temperature and just can ensure the security of reaction, cause the consumption of a large amount of energy consumptions.

In view of the defects of the existing column type kettle reactor, the utility model aims to provide the continuous ozone oxidation reactor which has the advantages of simple process, small and exquisite appearance, full mixing, high-efficiency heat exchange, easy cleaning, safety, reliability and longer service life, so that the ozone oxidation reaction can be more widely applied.

SUMMERY OF THE UTILITY MODEL

The utility model provides a continuous ozone oxidation reactor, which solves the technical problems of various defects of the existing column type reactor and kettle type reactor.

In order to solve the technical problems, the utility model provides a continuous ozone oxidation reactor, which comprises a magnetic stirrer, wherein a temperature transmitter is arranged on the surface of the magnetic stirrer, a magnetic stirrer installation seat is fixed at the lower end of the magnetic stirrer, a viewing mirror is arranged on the surface of the magnetic stirrer installation seat, a reactor upper flange is fixed at the lower end of the viewing mirror, a reactor cylinder is fixed at the lower end of the reactor upper flange, a reactor jacket is arranged at the lower end of the reactor upper flange outside the reactor cylinder, a reactor heat-insulating barrel is arranged at the lower end of the reactor upper flange outside the reactor jacket, polyurethane foam is filled in the heat-insulating barrel, a stirrer is connected to the lower end of the magnetic stirrer in a transmission manner inside the reactor cylinder, and a reactor lower flange is fixed at the lower end of the reactor cylinder and the reactor heat-insulating barrel, the lower end of the reactor lower flange is fixed with a sintering net gas distributor, the lower end of the sintering net gas distributor is fixed with a bottom plate, the lower end of the bottom plate is provided with a bottom gas inlet A, the outer portion of the stirrer is provided with a sintering net gas distributor, and the middle of the reactor lower flange and the bottom plate is provided with a sintering net gas distributor.

Preferably, the surface of the magnetic stirrer mounting seat is provided with two openings, and the surface of the opening is connected with a pressure transmitter and an air outlet I.

Preferably, the surface of the upper flange of the reactor is provided with four openings, and the four openings are respectively connected with an upper feed port H, an upper feed port G, an upper feed port F and a jacket outlet E.

Preferably, the reactor barrel is communicated with the upper feed inlet H, the gas outlet I and the upper feed inlet F.

Preferably, the reactor jacket is communicated with a jacket outlet E, and the side edge of the reactor lower flange is provided with three small holes which are connected with a jacket inlet D, a bottom feed inlet B and an overflow port C.

Preferably, the bottom feed inlet B and the overflow outlet C are communicated with the interior of the reactor cylinder.

Preferably, a vertical straight pipe is arranged in the reactor cylinder and communicated with the overflow port C, and the jacket inlet D is communicated with the reactor jacket.

Preferably, the surface of the stirrer is provided with an upper arrow-shaped blade and a lower arrow-shaped blade.

Preferably, the overflow pipe is vertically inserted into the reactor barrel and has a certain height in the vertical direction.

Compared with the related art, the continuous ozone oxidation reactor provided by the utility model has the following beneficial effects:

1. the equipment is provided with a sight glass structure, so that the reaction process and the process optimization can be observed visually;

2. compared with the bubbling type mixing of a column reactor, the reactor has the advantages that the efficiency is high, gas-liquid mixing is forced in a stirring mode, reactants are mixed more efficiently and more fully, and the material mixing degree can be controlled by changing the stirring rotating speed;

3. the reactor has compact structure, and in view of the characteristics of the kettle type reactor, the reactor has relatively simple manufacturing process, exquisite manufacturing and compact structure;

4. the reactor has wide application range, not only can be used for the reaction of ozone oxidation, but also can be suitable for other similar reactions after being slightly modified;

5. the degree of automation is high, the reactor can be conveniently integrated into a highly automated reaction system, the labor intensity of workers can be reduced, and the body health of operators can be protected;

6. safety and environmental protection, and a plurality of safety accessories can be simultaneously arranged on the reactor, such as: the pressure transmitter, the safety valve and the rupture disk can play a role in protection under emergency, nitrogen is continuously introduced into the reactor during the reaction, and the discharged gas is diluted, so that the concentration of combustible and explosive gas is maintained below the explosion limit, and the explosion is avoided;

7. the cleaning is convenient, and no component with a complex structure is arranged in the reactor, so that the cleaning difficulty is greatly reduced;

8. the reactor has long service life, and compared with a column reactor, the reactor has longer service life and can be normally used as long as the inner surface of the cylinder is not seriously corroded.

Drawings

FIG. 1 is a front internal structural view of the present invention;

FIG. 2 is an external structural view of the present invention;

FIG. 3 is a perspective view of the present invention;

fig. 4 is a side internal structure view of the present invention.

Reference numbers in the figures: 1. a magnetic stirrer; 2. a magnetic stirrer mounting base; 3. a sight glass; 4. an upper reactor flange; 5. a reactor barrel; 6. a reactor jacket; 7. a reactor heat-preserving barrel; 8. a stirrer; 9. a lower reactor flange 10 and a sintering net gas distributor; 11. a base plate; 12. a bottom air inlet A; 13. a pressure transmitter; 14. a temperature transmitter; 15. an air outlet I; 16. an upper feed port H; 17. an upper feed port G; 18. an upper feed port F; 19. a jacket inlet D; 20. a bottom feed inlet B; 21. an overflow port C; 22. a jacket outlet E; 23. an overflow pipe; 24. a gasket seal.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment is given by figures 1-3, the utility model comprises a continuous ozone oxidation reactor, comprising a magnetic stirrer 1, a temperature transmitter 14 is arranged on the surface of the magnetic stirrer 1, a magnetic stirrer mounting seat 2 is fixed on the lower end of the magnetic stirrer 1, a viewing mirror 3 is arranged on the surface of the magnetic stirrer mounting seat 2, a reactor upper flange 4 is fixed on the lower end of the viewing mirror 3, a reactor cylinder 5 is fixed on the lower end of the reactor upper flange 4, a reactor jacket 6 is arranged on the lower end position of the reactor upper flange 4 outside the reactor cylinder 5, a reactor thermal insulation barrel 7 is arranged on the lower end position of the reactor upper flange 4 outside the reactor jacket 6, polyurethane foam is filled in the thermal insulation barrel 7, a stirrer 8 is connected to the lower end position of the magnetic stirrer 1 inside the reactor cylinder 5 in a transmission manner, a reactor lower flange 9 is fixed on the lower ends of the reactor cylinder 5 and the reactor thermal insulation barrel 7, a sintering net gas distributor 10 is fixed at the lower end of the lower reactor flange 9, a bottom plate 11 is fixed at the lower end of the sintering net gas distributor 10, a bottom gas inlet A12 is arranged at the lower end of the bottom plate 11, 23 is arranged outside the stirrer 8, and the sintering net gas distributor 10 is arranged between the lower reactor flange 9 and the bottom plate 11.

The working principle is as follows:

the substances to be mixed enter the oxidation reactor through a bottom feeding hole B20 and a bottom gas inlet A12, the gas is dispersed through a sintering net gas distributor 10 and then is stirred and mixed through a stirrer 8, and the reaction product is discharged out of the reactor from an overflow port C21 in an overflow mode to reach a subsequent treatment device, a large amount of nitrogen is introduced into the reactor through any one of an upper feed inlet F18, an upper feed inlet G17 and an upper feed inlet H16, the rest gas which does not participate in the reaction is diluted by the nitrogen and then is discharged out of the reactor from a gas outlet I15, a low-temperature heat-conducting medium is introduced into a reactor jacket 6 from a jacket inlet D19 and then is discharged from a jacket outlet E22, a large amount of heat generated by the reaction in the reactor is taken out of the system, and a reactor heat-insulating barrel 7 is arranged outside the reactor jacket 6, so that the heat efficiency of the reactor is higher.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. A continuous ozone oxidation reactor comprises a magnetic stirrer (1) and is characterized in that a temperature transmitter (14) is arranged on the surface of the magnetic stirrer (1), a magnetic stirrer mounting seat (2) is fixed at the lower end of the magnetic stirrer (1), a viewing mirror (3) is arranged on the surface of the magnetic stirrer mounting seat (2), an upper reactor flange (4) is fixed at the lower end of the viewing mirror (3), a reactor cylinder (5) is fixed at the lower end of the upper reactor flange (4), a reactor jacket (6) is arranged at the lower end of the upper reactor flange (4) outside the reactor cylinder (5), a reactor heat-preserving barrel (7) is arranged at the lower end of the upper reactor flange (4) outside the reactor jacket (6), a polyurethane foaming foam is filled in the heat-preserving layer of the reactor heat-preserving barrel (7), the inside of reactor barrel (5) is connected with agitator (8) in the lower extreme position transmission of magnetic stirrers (1), the lower extreme of reactor barrel (5) and reactor heat-preserving container (7) is fixed with reactor lower flange (9), the lower extreme of reactor lower flange (9) is fixed with sintering net gas distributor (10), the lower extreme of sintering net gas distributor (10) is fixed with bottom plate (11), the lower extreme of bottom plate (11) is provided with bottom air inlet A (12), the outside of agitator (8) is provided with overflow pipe (23), the centre of reactor lower flange (9) and bottom plate (11) is provided with sintering net gas distributor (10).

2. A continuous ozonation reactor according to claim 1, wherein the surface of the magnetic stirrer mount (2) is provided with two openings and the opening surfaces are connected with a pressure transmitter (13) and an air outlet I (15).

3. The continuous ozonation reactor according to claim 1, wherein the surface of the reactor upper flange (4) is provided with four openings, and the four openings are respectively connected with the upper feed port H (16), the upper feed port G (17), the upper feed port F (18), and the jacket outlet E (22).

4. A continuous ozonation reactor according to claim 1, wherein the reactor barrel (5) is in communication with the upper feed port H (16), the gas outlet I (15), and the upper feed port F (18).

5. The continuous ozonation reactor according to claim 1, wherein the reactor jacket (6) is communicated with a jacket outlet E (22), and the side of the reactor lower flange (9) is provided with three small holes which are connected with a jacket inlet D (19), a bottom feed inlet B (20) and an overflow port C (21).

6. A continuous ozonation reactor according to claim 5, wherein the bottom feed port B (20) and the overflow port C (21) communicate with the inside of the reactor cylinder (5).

7. A continuous ozonation reactor according to claim 5, wherein the reactor cylinder (5) is internally provided with a vertical straight pipe and is communicated with the overflow port C (21), and the jacket inlet D (19) is communicated with the reactor jacket (6).

8. A continuous ozonation reactor according to claim 1, wherein the surface of the agitator (8) is provided with upper and lower two stages of arrow-shaped blades.

9. A continuous ozonation reactor according to claim 1, wherein the overflow pipe (23) is vertically inserted in the reactor cylinder (5) and has a certain height in a vertical direction.

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