Anthraquinone oxidation apparatus and alkylanthraquinone production system

Abstract

The utility model relates to the technical field of alkylanthraquinone production, specifically relates to anthra oxidation reaction equipment and alkylanthraquinone production system, wherein, first feeding mechanism and second feeding mechanism are connected in the top of reaction kettle and two are respectively communicated with containing cavity, exhaust mechanism is connected in the top of reaction kettle and is communicated with containing cavity, and exhaust mechanism is used for discharging the gas in containing cavity, condenser pipe sets up in the upper portion of containing cavity and is located above reaction raw material prearranged material level, and at least one part of condenser pipe sets up in the just below of air inlet of exhaust mechanism, refrigeration plant sets up in the outside of reaction kettle, and refrigeration plant is circulated with condenser pipe intercommunication and refrigerant can circulate between refrigeration plant and condenser pipe to make organic matter vapour can condense at condenser pipe. Adopt anthra oxidation reaction equipment of the utility model, can reduce the work burden of organic matter vapour recovery treatment of gas treatment device, makes the service life of gas treatment device prolongs.

Description

Technical Field

[0001] This utility model relates to the field of alkylanthraquinone production technology, specifically to anthracene oxidation reaction equipment and alkylanthraquinone production system. Background Technology

[0002] Alkyl anthraquinones are important chemical materials. The preparation of alkyl anthraquinones using hydrogen peroxide and alkyl anthracene solution as raw materials is a newly emerging process with green and environmentally friendly characteristics.

[0003] In this preparation process, alkyl anthracene particles are mixed with an organic solvent to form an alkyl anthracene solution. Then, hydrogen peroxide is added dropwise to the alkyl anthracene solution at a preset rate. The hydrogen peroxide oxidizes the alkyl anthracene to form alkyl anthraquinone in a high-temperature environment (ambient temperature range of 60℃-140℃). At the same time, the organic solvent will generate organic vapor under high-temperature conditions, and the hydrogen peroxide will decompose to generate oxygen under high-temperature conditions. The gas formed by the mixture of organic vapor and oxygen will enter the downstream gas treatment device for recycling.

[0004] However, due to the high ambient temperature (ranging from 60℃ to 140℃), the evaporation of organic solvents is large and a large amount of organic vapor is generated. Therefore, the gas treatment device has a heavy workload in recovering and treating organic vapor, which shortens the service life of the gas treatment device. Utility Model Content

[0005] The purpose of this invention is to overcome the problem that existing gas processing devices have a heavy workload in recovering organic vapors.

[0006] To achieve the above objectives, this utility model provides an anthracene oxidation reaction apparatus, which includes a reaction vessel, a first feeding mechanism, a second feeding mechanism, an exhaust mechanism, a condenser, and a refrigeration device. The reaction vessel has an internal containment cavity. The first and second feeding mechanisms are respectively connected to the top of the reaction vessel and communicate with the containment cavity. The first feeding mechanism is configured to allow alkyl anthracene particles and organic solvents to enter the containment cavity, and is also configured to allow hydrogen peroxide to be added dropwise into the containment cavity. The exhaust mechanism is connected to the top of the reaction vessel and communicates with the containment cavity, and is used to exhaust gas from the containment cavity. The condenser is located in the upper part of the containment cavity and above a preset material level for the reaction raw materials, with at least a portion of the condenser positioned directly below the air inlet of the exhaust mechanism. The refrigeration device is located outside the reaction vessel, and is circulated between the refrigeration device and the condenser, allowing the refrigerant to circulate between the refrigeration device and the condenser, so that organic vapors can condense at the condenser.

[0007] In some embodiments, at least a portion of the condenser tube is configured to extend spirally, and the spirally extended portion of the condenser tube is located directly below the air inlet of the exhaust mechanism.

[0008] In some embodiments, the exhaust mechanism includes an exhaust pipe, the bottom end of which is connected to the top of the reactor and communicates with the containment cavity. The exhaust pipe is provided with a condenser, which is in cyclic communication with a refrigeration device and the refrigerant can circulate between the condenser and the refrigeration device.

[0009] In some embodiments, the exhaust pipe is further provided with a plurality of circumferentially spaced heat sinks, which are disposed between the condenser and the reactor.

[0010] In some embodiments, the anthracene oxidation reaction apparatus further includes a gas distributor and a nitrogen generator. The gas distributor is disposed in the upper part of the receiving cavity and below the condenser tube. The gas distributor includes a plurality of first gas distribution pipes arranged in annular configuration and interconnected with each other. The plurality of first gas distribution pipes are arranged sequentially around each other and spaced apart from each other. The bottom of the first gas distribution pipes is provided with a plurality of first gas distribution holes. The nitrogen generator is disposed outside the reaction vessel. The nitrogen generator is connected to the outermost first gas distribution pipe through two gas inlet pipes to supply nitrogen to the gas distributor.

[0011] In some embodiments, the gas distributor further includes a plurality of vertically extending second gas distribution pipes, the second gas distribution pipes being disposed below the first gas distribution pipes, the top ends of the second gas distribution pipes communicating with the first gas distribution pipes, the bottom ends of the second gas distribution pipes being closed, and the second gas distribution pipes having a plurality of second gas distribution holes; the second gas distribution holes extend downwardly from the side facing away from the reactor axis to the side facing the reactor axis; and / or, the second feeding mechanism includes a dripping pipe, the dripping pipe being connected to the top of the reactor, the top end of the dripping pipe being able to communicate with a hydrogen peroxide supply device, the bottom end of the dripping pipe being located in a receiving cavity, and the dripping pipe passing through the space between two first gas distribution pipes; the bottom of the dripping pipe being connected to the inner wall of the reactor via a connecting rod, and the dripping pipe being connected to an adjacent first gas distribution pipe via a connecting piece; and / or, the anthracene oxidation reaction apparatus further includes a nitrogen separator, the inlet of the nitrogen separator being connected to an exhaust mechanism, and the nitrogen outlet of the nitrogen separator being connected to the gas distributor.

[0012] In some embodiments, the first feeding mechanism includes a hopper, a feed pipe, and a first shut-off valve; the hopper is disposed above the reactor, the feed pipe is connected to the top of the reactor and communicates with the receiving cavity, the top end of the feed pipe communicates with the bottom end of the hopper, and the first shut-off valve is installed on the feed pipe and located above the reactor.

[0013] In some embodiments, the anthracene oxidation reaction apparatus further includes a stirring mechanism, which includes a stirring driver, a stirring rod, and a plurality of stirring blades; the stirring driver is disposed above the reactor and fixedly connected to the top of the reactor, the stirring rod is rotatably connected to the top of the reactor, the top end of the stirring rod is connected to the driving part of the stirring driver, and the bottom end of the stirring rod is provided with stirring blades for stirring the reaction raw materials; the outlet of the second feeding mechanism is located between the stirring blades and the inner wall surface of the reactor; and / or, the anthracene oxidation reaction apparatus further includes a discharge mechanism, which includes a discharge pipe and a second shut-off valve, the discharge pipe being connected to the bottom of the reactor and communicating with the receiving cavity, and the second shut-off valve being installed on the discharge pipe.

[0014] In some embodiments, the reactor is provided with a jacket, and a heating chamber is formed between the jacket and the reactor. The heating chamber is in cyclic communication with a heating device so that the heat transfer medium can circulate between the heating chamber and the heating device.

[0015] This utility model also provides an alkylanthraquinone production system, which includes a gas treatment device, a hydrogen peroxide supply device, and the anthracene oxidation reaction equipment described in the above embodiment. The gas treatment device is connected to an exhaust mechanism, and the hydrogen peroxide supply mechanism is connected to a second feeding mechanism.

[0016] The above-mentioned technical solution of this utility model has the following technical effects: The refrigeration unit is located outside the reactor, and the condenser is placed inside the containment cavity. The condenser is in continuous circulation with the refrigeration unit, allowing the refrigerant to circulate between them. When the refrigerant flows into the condenser, its temperature is lower than that of the organic vapor, creating a significant temperature difference. This causes the organic vapor to condense on the condenser, reforming into organic solvent droplets, which then drip into the reaction materials (hydrogen peroxide and alkyl anthracene solution) below. Because the organic vapor condenses and remains in the containment cavity (e.g., organic solvent droplets adhere to the condenser or drip into the reaction materials), the amount of organic vapor flowing from the containment cavity to the gas processing unit is reduced. This decreases the workload of the gas processing unit in recovering and treating organic vapor, thus extending its service life. Therefore, the anthracene oxidation reaction equipment of this invention reduces the workload of the gas processing unit in recovering and treating organic vapor, extending its service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an anthracene oxidation reaction apparatus in one embodiment of the present invention; Figure 2 This is a schematic diagram of the first gas distribution pipe in one embodiment of the present invention; Figure 3This is a schematic diagram of the second gas distribution pipe in one embodiment of the present invention; Figure 4 This is a schematic diagram of the second gas distribution hole in one embodiment of the present invention; Figure 5 This is a schematic diagram of the distribution of heat sinks in one embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures 1. Reactor; 2. First feeding mechanism; 3. Second feeding mechanism; 4. Exhaust mechanism; 5. Condenser; 6. Refrigeration device; 7. Receiving cavity; 8. Exhaust pipe; 9. Condenser; 10. Heat sink; 11. Gas distributor; 12. Nitrogen generator; 13. Inlet pipe; 14. First gas distribution pipe; 15. First gas distribution orifice; 16. Second gas distribution pipe; 17. Second gas distribution orifice; 18. Dropping pipe; 19. Connecting rod; 20. Connecting piece; 21. Hydrogen peroxide supply device; 22. Hopper; 23. Feed pipe; 24. First shut-off valve; 25. Stirring driver; 26. Stirring rod; 27. Stirring blade; 28. Discharge pipe; 29. ​​Second shut-off valve; 30. Jacket; 31. Heating chamber; 32. Heating device. Detailed Implementation

[0019] The features and exemplary embodiments of various aspects of this utility model will now be described in detail. To make the objectives, technical solutions, and advantages of this utility model clearer, the following description, in conjunction with the accompanying drawings and specific embodiments, will provide a further detailed description. It should be understood that the specific embodiments described herein are intended only to explain this utility model and not to limit it. For those skilled in the art, this utility model can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this utility model by illustrating examples of it.

[0020] like Figure 1As shown, this utility model provides an anthracene oxidation reaction apparatus, which includes a reaction vessel 1, a first feeding mechanism 2, a second feeding mechanism 3, an exhaust mechanism 4, a condenser 5, and a refrigeration device 6. The reaction vessel 1 has an internal receiving cavity 7. The first feeding mechanism 2 and the second feeding mechanism 3 are respectively connected to the top of the reaction vessel 1 and communicate with the receiving cavity 7. The first feeding mechanism 2 is configured to allow alkyl anthracene particles and organic solvents to enter the receiving cavity 7, and to allow hydrogen peroxide to be added dropwise into the receiving cavity 7. The exhaust mechanism 4 is connected to the top of the reaction vessel 1 and communicates with the receiving cavity 7, and is used to exhaust the gas in the receiving cavity 7. The condenser 5 is located in the upper part of the receiving cavity 7 and above the preset material level of the reaction raw materials, with at least a portion of the condenser 5 positioned directly below the air inlet of the exhaust mechanism 4. The refrigeration device 6 is located outside the reaction vessel 1, and is in cyclic communication with the condenser 5, allowing the refrigerant to circulate between the refrigeration device 6 and the condenser 5, so that organic vapors can be condensed at the condenser 5.

[0021] Specifically, alkyl anthracene particles and an organic solvent are applied to the containment cavity 7 via the first feeding mechanism 2. In the containment cavity 7, the alkyl anthracene particles dissolve in the organic solvent to form an alkyl anthracene solution. The containment cavity 7 has a preset material level for the reactants, and the liquid level of the alkyl anthracene solution does not exceed this preset material level. Hydrogen peroxide is added dropwise to the alkyl anthracene solution in the containment cavity 7 via the second feeding mechanism 3 at a preset flow rate, and the liquid level of the mixed solution formed by the hydrogen peroxide and alkyl anthracene solution does not exceed the preset material level for the reactants. The reactor 1 is heated to allow the alkyl anthracene and hydrogen peroxide to react. Simultaneously, the heated alkyl anthracene solution generates organic vapor, which flows to the upper part of the containment cavity 7 and is discharged from the exhaust mechanism 4. A refrigeration device 6 is located outside the reactor 1, and a condenser 5 is located in the containment cavity 7. The condenser 5 is in cyclic communication with the refrigeration device 6, allowing the refrigerant to circulate between the condenser 5 and the refrigeration device 6. When the refrigerant flows into the condenser 5, the temperature of the condenser 5 is lower than the temperature of the organic vapor, and there is a large temperature difference (the temperature difference can be above 20°C, for example, 30°C-100°C). Therefore, the organic vapor can condense on the condenser 5 and reform into organic solvent droplets, which then drip into the reaction raw materials (hydrogen peroxide and alkyl anthracene solution) below. Because the organic vapor condenses and remains in the containment chamber 7, for example, the organic solvent droplets adhere to the condenser 5 or drip into the reaction raw materials, the amount of organic vapor flowing from the containment chamber 7 to the gas processing device is reduced. This reduces the workload of the gas processing device in recovering and treating organic vapor, thus extending the service life of the gas processing device.

[0022] In this embodiment, the refrigeration device 6 is located outside the reaction vessel 1, and the condenser 5 is located in the receiving cavity 7. The condenser 5 is in cyclic communication with the refrigeration device 6, allowing the refrigerant to circulate between the condenser 5 and the refrigeration device 6. When the refrigerant flows into the condenser 5, the temperature of the condenser 5 is lower than that of the organic vapor, and there is a significant temperature difference. Therefore, the organic vapor can condense on the condenser 5 and reform into organic solvent droplets, which then drip into the reaction raw materials (hydrogen peroxide and alkyl anthracene solution) below. Because the organic vapor condenses and remains in the receiving cavity 7 (e.g., organic solvent droplets adhere to the condenser 5 or drip into the reaction raw materials), the amount of organic vapor flowing from the receiving cavity 7 to the gas processing device is reduced. This reduces the workload of the gas processing device in recovering and processing organic vapor, thus extending the service life of the gas processing device. Therefore, the anthracene oxidation reaction equipment of this invention can reduce the workload of the gas processing device in recovering and processing organic vapor, thereby extending the service life of the gas processing device.

[0023] Furthermore, the reaction between hydrogen peroxide and alkyl anthracene solution is carried out in a high-temperature environment (ambient temperature range of 60℃-140℃). Hydrogen peroxide decomposes at high temperatures to produce oxygen, and the reactive oxygen species produced by hydrogen peroxide also undergo a quenching reaction to generate oxygen. Therefore, this preparation process generates a large amount of oxygen. Simultaneously, the alkyl anthracene solution, when heated, produces a large amount of organic vapor. This organic vapor, mixed with oxygen, further increases the risk of combustion and explosion. The anthracene oxidation reaction equipment of this invention can condense the organic vapor, reducing its concentration and thus lowering the risk of combustion and explosion.

[0024] It should be noted that the refrigeration device 6 is a common device in the field and is not an improvement of this utility model. Those skilled in the art can refer to the prior art, and this utility model will not elaborate further. For example, you can refer to the patent with publication number CN223271545U or the patent with publication number CN223216542U.

[0025] like Figure 1 As shown, in some embodiments of this utility model, at least a portion of the condenser tube 5 is configured to extend spirally, thereby increasing the overall length and outer surface area of ​​the condenser tube 5, which helps to improve condensation efficiency. Furthermore, the spirally extended portion of the condenser tube 5 is positioned directly below the air inlet of the exhaust mechanism 4, so that as organic vapors flow towards the exhaust mechanism 4, they will inevitably come into contact with the condenser tube 5 first, allowing as much organic vapor as possible to condense and improving the condensation effect.

[0026] In some embodiments, the inlet and outlet ends of the condenser 5 extend from the top of the reactor 1 to facilitate communication with the refrigeration device 6.

[0027] like Figure 1 As shown, in some embodiments of this utility model, the exhaust mechanism 4 includes an exhaust pipe 8, the bottom end of which is connected to the top of the reaction vessel 1, and the exhaust pipe 8 is connected to the receiving cavity 7. The exhaust pipe 8 is provided with a condenser 9, which is circulatedly connected to the refrigeration device 6 and the refrigerant can circulate between the condenser 9 and the refrigeration device 6.

[0028] Specifically, a portion of the organic vapor in the containment chamber 7 condenses at the condenser tube 5, while another portion of the organic vapor in the containment chamber 7 enters the gas processing device through the exhaust pipe 8. However, the exhaust pipe 8 is equipped with a condenser 9, which is in cyclic communication with the refrigeration unit 6, allowing the refrigerant to circulate between the condenser 9 and the refrigeration unit 6. When the refrigerant flows into the condenser 9, the temperature of the condenser 9 is lower than that of the organic vapor, creating a significant temperature difference. Therefore, the organic vapor can condense on the condenser 9 and reform into organic solvent droplets, which then drip into the reaction materials below. Furthermore, the exhaust pipe 8 is smaller than the containment chamber 7, allowing the organic vapor to more easily contact the condenser 9, thus improving the condensation effect.

[0029] It should be noted that the condenser 9 can be any type of condenser that meets the requirements of this utility model, and this utility model is not limited thereto. For example, the condenser 9 can be a tubular condenser or a plate condenser commonly used in this field.

[0030] It should be noted that the exhaust mechanism 4 can be any structural form in the art that can meet the requirements of this utility model, and this utility model is not limited thereto. For example, it can be the exhaust mechanism in the patent with publication number CN222534954U or the exhaust mechanism in the patent with publication number CN221207951U.

[0031] like Figure 1 and Figure 5 As shown, in some embodiments of this utility model, the exhaust pipe 8 is also provided with a plurality of circumferentially spaced heat sinks 10, which are disposed between the condenser 9 and the reactor 1.

[0032] Specifically, the heat sink 10 has a heat dissipation effect, which can reduce the temperature of the exhaust pipe 8 and its interior, and help organic vapors condense on the inner wall of the exhaust pipe 8, thereby improving condensation efficiency.

[0033] like Figure 1 and Figure 2As shown, in some embodiments of this utility model, the anthracene oxidation reaction apparatus further includes a gas distributor 11 and a nitrogen generator 12. The gas distributor 11 is disposed on the upper part of the receiving cavity 7 and located below the condenser tube 5. The gas distributor 11 includes a plurality of first gas distribution pipes 14 arranged in annular shape and interconnected with each other. The plurality of first gas distribution pipes 14 are arranged in sequence around each other and spaced apart from each other. The bottom of the first gas distribution pipes 14 is provided with a plurality of first gas distribution holes 15. The nitrogen generator 12 is disposed outside the reaction vessel 1. The nitrogen generator 12 is connected to the outermost first gas distribution pipe 14 through two gas inlet pipes 13 to supply nitrogen to the gas distributor 11.

[0034] Specifically, the hydrogen peroxide and alkyl anthracene solution react in a high-temperature environment (ambient temperature range of 60℃-140℃). The hydrogen peroxide decomposes at high temperatures to produce oxygen, and the reactive oxygen species produced by the hydrogen peroxide also undergo a quenching reaction to generate oxygen. Therefore, this preparation process generates a large amount of oxygen, resulting in a high oxygen concentration in the reaction apparatus and posing a risk of combustion and explosion. However, the gas distributor 11 is located in the containment cavity 7 and is situated above the preset material level of the reaction raw materials. Therefore, the nitrogen generator 12 can distribute nitrogen gas above the preset material level of the reaction raw materials through the gas distributor 11, reducing the overall oxygen concentration and thus lowering the risk of combustion and explosion.

[0035] It should be noted that the nitrogen generator 12 is a common device in the field and is not an improvement of this utility model. Those skilled in the art can refer to the prior art, and this utility model will not elaborate further. For example, the nitrogen generator of the patent with publication number CN222586049U or the nitrogen generator of the patent with publication number CN223276043U can be used.

[0036] like Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments of this utility model, the gas distributor 11 further includes a plurality of vertically extending second gas distribution pipes 16. The second gas distribution pipes 16 are disposed below the first gas distribution pipe 14. The top end of the second gas distribution pipe 16 is connected to the first gas distribution pipe 14, and the bottom end of the second gas distribution pipe 16 is closed. The second gas distribution pipe 16 is provided with a plurality of second gas distribution holes 17. The second gas distribution holes 17 extend downwardly from the side of their axis away from the reactor 1 to the side of their axis facing the reactor 1.

[0037] Specifically, the second gas distribution pipe 16 is located between the preset material level of the reactants and the first gas distribution pipe 14. The second gas distribution pipe 16 can expand the distribution range of the gas distributor 11, further enabling nitrogen to be evenly distributed above the preset material level of the reactants and eliminating areas with locally high oxygen content. Moreover, the second gas distribution hole 17 extends downward at an angle, so the flow direction of nitrogen is opposite to the flow direction of oxygen (oxygen flows upward), which helps to ensure thorough mixing of nitrogen and oxygen.

[0038] like Figure 1 As shown, in some embodiments of this utility model, the second feeding mechanism 3 includes a dripping tube 18, which is connected to the top of the reactor 1. The top end of the dripping tube 18 can communicate with the hydrogen peroxide supply device 21, and the bottom end of the dripping tube 18 is located in the receiving cavity 7. The dripping tube 18 passes through the space between two first gas distribution pipes 14. The bottom of the dripping tube 18 is connected to the inner wall of the reactor 1 through a connecting rod 19, and the dripping tube 18 is connected to the adjacent first gas distribution pipe 14 through a connecting piece 20.

[0039] Specifically, the hydrogen peroxide supply device 21 delivers hydrogen peroxide to the dropper 18 at a preset flow rate, and the dropper 18 drips hydrogen peroxide into the alkyl anthracene solution at the preset flow rate. Excessive application of hydrogen peroxide can cause severe exothermic reactions, so to improve safety, it is typically applied by dripping. The connecting rod 19 enhances the stability of the dropper 18, preventing it from shaking. The temperature of the hydrogen peroxide is room temperature, approximately in the range of 10°C-30°C, so the temperature of the dropper 18 is also lower than the temperature of the gas in the receiving cavity 7, resulting in a significant temperature difference. The dropper 18 is connected to the adjacent first gas distribution pipe 14 via a connecting piece 20. This connection increases the stability of the dropper 18, and the temperature of the connecting piece 20 is also lower than the temperature of the gas in the receiving cavity 7, allowing organic vapors to condense at the connecting piece 20 (the connecting piece 20 is a sheet-like component with a large outer surface area).

[0040] It should be noted that the second feeding mechanism 3 can also be any structural form in the art that can meet the usage requirements of this utility model, and this utility model is not limited thereto. For example, it can be the feeding mechanism of the patent with publication number CN222489966U or the feeding mechanism of the patent with publication number CN222131818U.

[0041] In some embodiments of this utility model, the anthracene oxidation reaction device further includes a nitrogen separator, the inlet of which is connected to the exhaust mechanism 4, and the nitrogen outlet of which is connected to the gas distributor 11.

[0042] Specifically, the gas discharged from the exhaust mechanism 4 (which contains oxygen, nitrogen, and organic vapors) can enter the nitrogen separator, which can separate the nitrogen from the gas and then return the separated nitrogen to the gas distributor 11. Therefore, nitrogen can be recycled, reducing production costs.

[0043] It should be noted that nitrogen separators are common devices in this field. Those skilled in the art can refer to existing technologies for the structure and working principle of nitrogen separators, and this utility model will not elaborate further.

[0044] like Figure 1 As shown, in some embodiments of this utility model, the first feeding mechanism 2 includes a hopper 22, a feed pipe 23 and a first shut-off valve 24; the hopper 22 is disposed above the reactor 1, the feed pipe 23 is connected to the top of the reactor 1 and communicates with the receiving cavity 7, the top end of the feed pipe 23 is connected to the bottom end of the hopper 22, and the first shut-off valve 24 is installed on the feed pipe 23 and located above the reactor 1.

[0045] Specifically, the first shut-off valve 24 is opened, and alkyl anthracene particles are added to the hopper 22. The alkyl anthracene particles enter the receiving chamber 7 through the hopper 22 and the feed pipe 23. Then, an organic solvent is added to the hopper 22. The organic solvent enters the receiving chamber 7 through the hopper 22 and the feed pipe 23. Finally, the second shut-off valve 29 is closed.

[0046] It should be noted that the first feeding mechanism 2 can also be any structural form in the art that can meet the usage requirements of this utility model, and this utility model is not limited thereto. For example, it can be the feeding mechanism in the patent with publication number CN222606281U or the feeding mechanism in the patent with publication number CN222489896U.

[0047] like Figure 1 As shown, in some embodiments of this utility model, the anthracene oxidation reaction apparatus further includes a stirring mechanism, which includes a stirring driver 25, a stirring rod 26, and multiple stirring blades 27. The stirring driver 25 is disposed above the reactor 1 and fixedly connected to the top of the reactor 1. The stirring rod 26 is rotatably connected to the top of the reactor 1. The top end of the stirring rod 26 is connected to the driving part of the stirring driver 25. The bottom end of the stirring rod 26 is provided with stirring blades 27, which are used to stir the reaction raw materials. The outlet of the second feeding mechanism 3 is located between the stirring blades 27 and the inner wall surface of the reactor 1.

[0048] Specifically, the stirring rod 26 is sealed through the top of the reactor 1. The stirring rod 26 is rotatable relative to the reactor 1, with its top end extending out of the reactor 1 and its middle and bottom parts located within the receiving cavity 7. The stirring actuator 25 can be a device with driving capability, such as a motor. The driving part of the stirring actuator 25 is connected to the top end of the stirring rod 26. The stirring actuator 25 can drive the stirring rod 26 to rotate axially, which in turn drives the stirring blade 27 to rotate. The stirring blade 27 can stir the alkyl anthracene particles and the organic solvent, rapidly forming an alkyl anthracene solution. Furthermore, during the dropwise addition of hydrogen peroxide to the alkyl anthracene solution, the stirring blade 27 can stir the alkyl anthracene solution and hydrogen peroxide, ensuring that the hydrogen peroxide is uniformly dispersed in the alkyl anthracene solution. This avoids localized and violent exothermic reactions due to excessively high local concentrations of hydrogen peroxide, thus improving reaction safety.

[0049] like Figure 1 As shown, in some embodiments of this utility model, the anthracene oxidation reaction device further includes a discharge mechanism, which includes a discharge pipe 28 and a second shut-off valve 29. The discharge pipe 28 is connected to the bottom of the reactor 1 and communicates with the receiving cavity 7, and the second shut-off valve 29 is installed on the discharge pipe 28.

[0050] Specifically, opening the second shut-off valve 29 allows the reaction raw materials (alkyl anthracene solution and hydrogen peroxide) and the reaction product (alkyl anthraquinone) to flow out from the discharge pipe 28; closing the second shut-off valve 29 prevents the reaction raw materials (alkyl anthracene solution and hydrogen peroxide) and the reaction product (alkyl anthraquinone) from flowing out from the discharge pipe 28.

[0051] like Figure 1 As shown, in some embodiments of this utility model, a jacket 30 is provided outside the reactor 1, and a heating chamber 31 is formed between the jacket 30 and the reactor 1. The heating chamber 31 is circulatedly connected with the heating device 32 so that the heat transfer medium can circulate between the heating chamber 31 and the heating device 32.

[0052] Specifically, the heating device 32 is located outside the reactor 1. A jacket 30 is also located outside the reactor 1, forming a heating chamber 31 between them. The heating chamber 31 is in continuous communication with the heating device 32, and the heat transfer medium circulates between the heating chamber 31 and the heating device 32. When the heat transfer medium flows into the heating chamber 31, it continuously and stably heats the alkyl anthracene particles and organic solvent in the reactor 1, accelerating the melting of the alkyl anthracene particles and rapidly forming an alkyl anthracene solution. The heating chamber 31 also continuously and stably heats the reaction raw materials (a mixture of alkyl anthracene solution and hydrogen peroxide), providing the high-temperature conditions required for the preparation of alkyl anthraquinone.

[0053] It should be noted that the heating device 32 is a common device in the field and is not an improvement of this utility model. Those skilled in the art can refer to the prior art, and this utility model will not elaborate further. For example, the heating device of the patent with publication number CN118794047B or the heating device of the patent with publication number CN222417988U can be used.

[0054] like Figure 1 As shown, this utility model also provides an alkylanthraquinone production system, which includes a gas treatment device, a hydrogen peroxide supply device 21, and the anthracene oxidation reaction equipment described in the above embodiment. The gas treatment device is connected to the exhaust mechanism 4 to recover the gas in the containment chamber 7. The hydrogen peroxide supply device 21 is connected to the second feeding mechanism 3 and can supply hydrogen peroxide to the second feeding mechanism 3 at a preset flow rate, so that the hydrogen peroxide can be added dropwise to the alkylanthraquinone solution in a preset flow direction.

[0055] Specifically, since the alkylanthraquinone production system uses the anthracene oxidation reaction device described in the above embodiment, the alkylanthraquinone production system can also achieve the above-mentioned technical effects.

[0056] It should be noted that the hydrogen peroxide supply device 21 is a common device in the field, and this utility model can adopt any mechanism that meets the usage requirements of this utility model, and this utility model is not limited. For example, the hydrogen peroxide supply device 21 can adopt the liquid supply device of the patent with publication number CN118998982A or the liquid supply device of the patent with publication number CN221813883U.

[0057] It should also be noted that the gas processing device is a common device in the field and is not an improvement of this utility model. Those skilled in the art can refer to the prior art, and this utility model will not elaborate further. For example, the gas processing device of the patent with publication number CN117980652A can be used.

[0058] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above are only preferred embodiments of this utility model. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this utility model, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of this utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. An anthracene oxidation reaction apparatus, characterized in that, It includes a reaction vessel (1), a first feeding mechanism (2), a second feeding mechanism (3), an exhaust mechanism (4), a condenser (5), and a refrigeration device (6); The reactor (1) is provided with a containment cavity (7). The first feeding mechanism (2) and the second feeding mechanism (3) are respectively connected to the top of the reactor (1) and are respectively connected to the containment cavity (7). The first feeding mechanism (2) is configured to allow alkyl anthracene particles and organic solvents to enter the containment cavity (7). The first feeding mechanism (2) is configured to allow hydrogen peroxide to be added dropwise into the containment cavity (7). The exhaust mechanism (4) is connected to the top of the reactor (1) and communicates with the containment cavity (7). The exhaust mechanism (4) is used to exhaust the gas in the containment cavity (7). The condenser (5) is located at the upper part of the containment cavity (7) and above the preset material level of the reaction raw material. At least a part of the condenser (5) is located directly below the air inlet of the exhaust mechanism (4). The refrigeration device (6) is located outside the reactor (1). The refrigeration device (6) is circulated with the condenser (5) and the refrigerant can circulate between the refrigeration device (6) and the condenser (5) so that the organic vapor can be condensed at the condenser (5).

2. The anthracene oxidation reaction apparatus according to claim 1, characterized in that, At least a portion of the condenser tube (5) is configured to extend in a spiral manner, and the spirally extended portion of the condenser tube (5) is located directly below the air inlet of the exhaust mechanism (4).

3. The anthracene oxidation reaction apparatus according to claim 1, characterized in that, The exhaust mechanism (4) includes an exhaust pipe (8), the bottom end of which is connected to the top of the reactor (1) and the exhaust pipe (8) is connected to the containment cavity (7). The exhaust pipe (8) is provided with a condenser (9), which is circulated with the refrigeration device (6) and the refrigerant can circulate between the condenser (9) and the refrigeration device (6).

4. The anthracene oxidation reaction apparatus according to claim 3, characterized in that, The exhaust pipe (8) is also provided with a plurality of circumferentially spaced heat sinks (10), which are disposed between the condenser (9) and the reactor (1).

5. The anthracene oxidation reaction apparatus according to claim 1, characterized in that, The anthracene oxidation reaction apparatus further includes a gas distributor (11) and a nitrogen generator (12). The gas distributor (11) is located above the containment cavity (7) and below the condenser (5). The gas distributor (11) includes a plurality of first gas distribution pipes (14) arranged in a ring and interconnected with each other. The plurality of first gas distribution pipes (14) are arranged in sequence around each other and spaced apart from each other. The bottom of the first gas distribution pipes (14) is provided with a plurality of first gas distribution holes (15). The nitrogen generator (12) is located outside the reaction vessel (1). The nitrogen generator (12) is connected to the outermost first gas distribution pipe (14) through two gas inlet pipes (13) to supply nitrogen to the gas distributor (11).

6. The anthracene oxidation reaction apparatus according to claim 5, characterized in that, The gas distributor (11) further includes a plurality of vertically extending second gas distribution pipes (16), which are disposed below the first gas distribution pipe (14). The top end of the second gas distribution pipe (16) is connected to the first gas distribution pipe (14), and the bottom end of the second gas distribution pipe (16) is closed. The second gas distribution pipe (16) is provided with a plurality of second gas distribution holes (17). The second gas distribution holes (17) extend downwardly from the side of their axis away from the reactor (1) to the side of their axis facing the reactor (1). And / or, the second feeding mechanism (3) includes a drip tube (18) connected to the top of the reactor (1), the top end of the drip tube (18) being able to communicate with the hydrogen peroxide supply device (21), the bottom end of the drip tube (18) being located in the receiving cavity (7), the drip tube (18) passing through the space between the two first gas distribution pipes (14); the bottom of the drip tube (18) being connected to the inner wall of the reactor (1) via a connecting rod (19), and the drip tube (18) being connected to the adjacent first gas distribution pipe (14) via a connecting piece (20); And / or, the anthracene oxidation reaction apparatus also includes a nitrogen separator, the inlet of which is connected to the exhaust mechanism (4), and the nitrogen outlet of which is connected to the gas distributor (11).

7. The anthracene oxidation reaction apparatus according to claim 1, characterized in that, The first feeding mechanism (2) includes a hopper (22), a feed pipe (23), and a first shut-off valve (24); the hopper (22) is located above the reactor (1), the feed pipe (23) is connected to the top of the reactor (1) and communicates with the receiving cavity (7), the top end of the feed pipe (23) is connected to the bottom end of the hopper (22), and the first shut-off valve (24) is installed on the feed pipe (23) and located above the reactor (1).

8. The anthracene oxidation reaction apparatus according to claim 1, characterized in that, The anthracene oxidation reaction apparatus further includes a stirring mechanism, which includes a stirring driver (25), a stirring rod (26), and multiple stirring blades (27). The stirring driver (25) is located above the reactor (1) and is fixedly connected to the top of the reactor (1). The stirring rod (26) is rotatably connected to the top of the reactor (1). The top end of the stirring rod (26) is connected to the driving part of the stirring driver (25). The stirring blades (27) are located at the bottom of the stirring rod (26). The stirring blades (27) are used to stir the reaction raw materials. The outlet of the second feeding mechanism (3) is located between the stirring blades (27) and the inner wall of the reactor (1). And / or, the anthracene oxidation reaction equipment further includes a discharge mechanism, which includes a discharge pipe (28) and a second shut-off valve (29). The discharge pipe (28) is connected to the bottom of the reactor (1) and communicates with the containment cavity (7). The second shut-off valve (29) is installed on the discharge pipe (28).

9. The anthracene oxidation reaction apparatus according to claim 1, characterized in that, The reactor (1) is provided with a jacket (30) on the outside, and a heating chamber (31) is formed between the jacket (30) and the reactor (1). The heating chamber (31) is circulatedly connected to the heating device (32) so that the heat transfer medium can circulate between the heating chamber (31) and the heating device (32).

10. An alkylanthraquinone production system, characterized in that, The device includes a gas treatment device, a hydrogen peroxide supply device (21), and an anthracene oxidation reaction device according to any one of claims 1-9, wherein the gas treatment device is connected to the exhaust mechanism (4), and the hydrogen peroxide supply mechanism is connected to the second feeding mechanism (3).

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