Oxidation tower for producing and preparing hydrogen peroxide

Abstract

The utility model discloses an oxidizing tower for producing and preparing hydrogen peroxide, which relates to the technical field of hydrogen peroxide production and comprises a tower body mechanism, a spraying mechanism is arranged in the tower body mechanism, and an oxidizing mechanism is arranged below the spraying mechanism and on the inner wall of the tower body mechanism. The oxidation mechanism comprises an oxygen supply pipe externally connected with oxygen supply equipment, and an oxygen supply branch pipe is arranged on the surface of the oxygen supply pipe. Through the arrangement of the oxidation mechanism, when a reaction liquid is oxidized, oxygen in the oxygen supply pipe is introduced into the microporous aeration stone through the oxygen supply branch pipe, and under the action that the interior of the microporous aeration stone is provided with micropores, the oxygen is divided into fine airflow, so that the contact area with the reaction liquid is increased; the reaction liquid can be differentiated into fine liquid drops through the spraying micropores in the surface of the flow dividing pipe and then sprayed out, so that the contact area of the liquid and the gas is increased again, the oxidation effect is improved, and the oxidation is more comprehensive.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen peroxide production technology, specifically to an oxidation tower used for the production and preparation of hydrogen peroxide. Background Technology

[0002] Hydrogen peroxide is an important inorganic chemical raw material widely used in papermaking, textiles, pharmaceuticals, and environmental protection. Hydrogen peroxide decomposes to produce water and oxygen, causing no secondary pollution and aligning with the principles of green production. Current technology produces hydrogen peroxide via the anthraquinone process. This process uses ethyl anthraquinone as a carrier and palladium as a catalyst, directly synthesizing hydrogen peroxide from hydrogen and oxygen. The process involves hydrogenation, oxidative extraction, and post-treatment. The hydrogenation reaction occurs when an anthraquinone working solution reacts with hydrogen under specific pressure, temperature, and the presence of a palladium catalyst to produce hydrogen anthraquinone. The hydrogenated solution is then fed into an oxidation tower for further oxidation.

[0003] Currently, the oxidation of hydrogenated liquids is mostly carried out through bubble oxidation towers. During the oxidation process, air passes through the oxidizing liquid and reacts under the catalysis of the catalyst. However, in traditional bubble oxidation towers, the gas passes through the liquid phase in the form of large bubbles, resulting in a limited gas-liquid contact area, which leads to incomplete reaction and certain inconveniences in use. Utility Model Content

[0004] This invention provides an oxidation tower for the production of hydrogen peroxide, in order to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] An oxidation tower for the production of hydrogen peroxide includes a tower body structure. A spray mechanism is located inside the tower body structure. An oxidation mechanism is located below the spray mechanism and on the inner wall of the tower body structure. The oxidation mechanism includes an oxygen supply pipe connected to an external oxygen supply device. An oxygen supply branch pipe is provided on the surface of the oxygen supply pipe. One end of the oxygen supply branch pipe is connected to a microporous aeration stone. A support frame is attached to the surface of the microporous aeration stone. A catalyst is disposed inside the microporous aeration stone. An outlet pipe is disposed inside the microporous aeration stone. An outlet branch pipe is disposed on the surface of the outlet pipe. A gas-liquid separation valve is disposed inside the outlet branch pipe.

[0007] A further improvement of the present invention is that the tower body mechanism includes a base plate, a tower body with a built-in temperature sensor is fixedly connected to the top of the base plate, and a sealing cover is provided on the top of the tower body.

[0008] A further improvement of this utility model is that: a circulating cooling pipe is provided inside the tower body, and the two ends of the circulating cooling pipe are provided with connecting pipes for external cooling liquid circulation equipment.

[0009] A further improvement of this utility model is that: a reaction liquid conveying pipe is provided on the top of the sealing cover, and a reaction liquid discharge pipe is provided on one side of the lower end of the tower body.

[0010] A further improvement of this utility model is that the inner wall of the tower body is fixedly connected to the surface of the support frame, and the surfaces of the oxygen supply pipe and the gas outlet pipe are both fixedly connected to the inside of the sealing cover.

[0011] A further improvement of the present invention is that the spraying mechanism includes a partition plate, the surface of which is fixedly connected to the inner wall of the tower body, a diversion cavity is fixedly connected to the bottom of the partition plate, and a diversion pipe is provided on the surface of the diversion cavity.

[0012] A further improvement of this utility model is that: spray micro-holes are provided on the surface of the diversion pipe, and a delivery pump is fixedly connected to the bottom of the diversion cavity.

[0013] A further improvement of this utility model is that the input end of the delivery pump is connected to the top of the partition plate through a first pipe, and the output end of the delivery pump is connected to the interior of the diversion chamber through a second pipe.

[0014] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0015] This invention provides an oxidation tower for the production of hydrogen peroxide. Through the oxidation mechanism, oxygen is introduced into the microporous aeration stone via an oxygen supply branch pipe during the oxidation of the reaction liquid. The micropores within the aeration stone divert the oxygen into fine gas streams, increasing the contact area with the reaction liquid. Simultaneously, the spray mechanism allows the reaction liquid to be sprayed through micropores on the surface of the diversion pipe, further increasing the contact area between the liquid and gas, improving the oxidation effect, and making the oxidation more comprehensive. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a side sectional view of the present invention.

[0019] Figure 4 This is a schematic diagram of the oxidation mechanism of this utility model;

[0020] Figure 5This is a schematic diagram of the spray mechanism of this utility model.

[0021] In the diagram: 11. Base plate; 12. Tower body; 13. Sealing cover; 14. Circulating cooling pipe; 15. Connecting pipe; 16. Reaction liquid delivery pipe; 17. Reaction liquid discharge pipe; 21. Divider plate; 22. Diversion chamber; 23. Diversion pipe; 24. Delivery pump; 25. First pipeline; 26. Second pipeline; 31. Oxygen supply pipe; 32. Oxygen supply branch pipe; 33. Microporous aeration stone; 34. Support frame; 35. Catalyst; 36. Gas outlet pipe; 37. Gas outlet branch pipe; 38. Gas-liquid separation valve. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to embodiments:

[0023] Example 1

[0024] like Figure 1-5 As shown, this utility model provides an oxidation tower for the production and preparation of hydrogen peroxide, including a tower body structure. A spraying mechanism is provided inside the tower body structure. An oxidation mechanism is provided below the spraying mechanism and located on the inner wall of the tower body structure. The oxidation mechanism includes an oxygen supply pipe 31 connected to an external oxygen supply device. An oxygen supply branch pipe 32 is provided on the surface of the oxygen supply pipe 31. One end of the oxygen supply branch pipe 32 is connected to a microporous aeration stone 33. A support frame 34 is attached to the surface of the microporous aeration stone 33. A catalyst 35 is provided inside the microporous aeration stone 33. An outlet pipe 36 is provided inside the microporous aeration stone 33. An outlet branch pipe 37 is provided on the surface of the outlet pipe 36. A gas-liquid separation valve 38 is provided inside the outlet branch pipe 37.

[0025] In this embodiment, during the process of permeating the microporous aeration stone 33, oxygen is supplied to the oxygen supply pipe 31 through an external oxygen supply device while the oxygen is in contact with the catalyst. Under the guidance of the oxygen supply branch pipe 32, the oxygen enters the microporous aeration stone 33. Under the diversion of the micropores in the microporous aeration stone 33, it comes into contact with the fine droplets and produces an oxidation reaction. This can effectively increase the gas-liquid contact area, making it easier to use. The reaction liquid after the initial oxidation undergoes a second oxidation reaction under the action of the lower delivery pump, making the reaction more thorough.

[0026] Example 2

[0027] like Figure 1-5As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the tower body structure includes a base plate 11, a tower body 12 with a built-in temperature sensor fixedly connected to the top of the base plate 11, a sealing cover 13 provided on the top of the tower body 12, a circulating cooling pipe 14 provided inside the tower body 12, connecting pipes 15 for external cooling liquid circulation equipment provided at both ends of the circulating cooling pipe 14, a reaction liquid conveying pipe 16 provided on the top of the sealing cover 13, a reaction liquid discharge pipe 17 provided on one side of the lower end of the tower body 12, the inner wall of the tower body 12 fixedly connected to the surface of the support frame 34, and the surfaces of the oxygen supply pipe 31 and the gas outlet pipe 36 fixedly connected to the inside of the sealing cover 13.

[0028] In this embodiment, during use, the reaction liquid is injected into the tower body 12 from the reaction liquid delivery pipe 16, and then the delivery pump 24 is started. Under the action of the delivery pump 24, the reaction liquid is sucked into the pump body along the first pipe 25, and then injected into the diversion chamber 22 along the second pipe 26. It is then diverted into fine droplets along the spray micropores on the surface of the diversion pipe 23 and sprayed out, falling onto the surface of the microporous aeration stone 33, and seeping through the microporous aeration stone 33 to fall onto the top of the lower partition plate 21.

[0029] Example 3

[0030] like Figure 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the spraying mechanism includes a partition plate 21, the surface of the partition plate 21 is fixedly connected to the inner wall of the tower body 12, a diversion cavity 22 is fixedly connected to the bottom of the partition plate 21, a diversion pipe 23 is provided on the surface of the diversion cavity 22, spraying micro-holes are opened on the surface of the diversion pipe 23, a delivery pump 24 is fixedly connected to the bottom of the diversion cavity 22, the input end of the delivery pump 24 is connected to the top of the partition plate 21 through a first pipe 25, and the output end of the delivery pump 24 is connected to the interior of the diversion cavity 22 through a second pipe 26.

[0031] In this embodiment, during the continuous input of gas, when the gas pressure inside the tower body 12 is high, the air inside the tower body 12 enters the main gas pipe 36 along the gas outlet branch pipe 37, and the excess gas is discharged through the gas outlet pipe 36. At the same time, the gas-liquid separation valve can also separate the reaction liquid in the discharged air, making it easier to use. When the temperature sensor inside the tower body 12 senses that the temperature is too high, coolant is supplied to the circulating cooling pipe 14 through external equipment, thereby indirectly cooling the reaction liquid inside the tower body 12 to prevent it from getting too hot, making it easier to use.

[0032] The working principle of the oxidation tower used for hydrogen peroxide production will be explained in detail below.

[0033] like Figure 1-5As shown, during operation, the reaction solution is injected into the tower body 12 through the reaction solution delivery pipe 16. Then, the delivery pump 24 is started. Under the action of the delivery pump 24, the reaction solution is drawn into the pump body along the first pipe 25, and then injected into the distribution chamber 22 along the second pipe 26. This causes the solution to be divided into fine droplets through the spray micropores on the surface of the distribution pipe 23 and sprayed out, falling onto the surface of the microporous aeration stone 33. The droplets then seep through the microporous aeration stone 33 and fall to the top of the lower partition plate 21. During the process of passing through the microporous aeration stone 33, the solution comes into contact with the catalyst. Simultaneously, oxygen is supplied to the oxygen supply pipe 31 through an external oxygen supply device. Guided by the oxygen supply branch pipe 32, the oxygen enters the microporous aeration stone 33 and, through the diversion of the micropores within the microporous aeration stone 33, comes into contact with the fine droplets. The oxidation reaction effectively increases the gas-liquid contact area, making it easier to use. After the initial oxidation, the reaction liquid undergoes a second oxidation reaction under the action of the lower-level delivery pump, making the reaction more thorough and easier to use. During the continuous input of gas, when the gas pressure inside the tower body 12 is high, the air inside the tower body 12 enters the main gas pipe 36 along the gas outlet branch pipe 37 and is discharged through the gas outlet pipe 36. At the same time, the gas-liquid separation valve can also separate the reaction liquid in the discharged air, making it easier to use. When the temperature sensor inside the tower body 12 senses that the temperature is too high, coolant is supplied to the circulating cooling pipe 14 through external equipment, thereby indirectly cooling the reaction liquid inside the tower body 12 to prevent it from becoming too hot, making it easier to use.

[0034] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. An oxidation tower for the production of hydrogen peroxide, comprising a tower body structure, characterized in that: The tower body is equipped with a spraying mechanism inside. Below the spraying mechanism and located on the inner wall of the tower body, there is an oxidation mechanism. The oxidation mechanism includes an oxygen supply pipe (31) connected to an external oxygen supply device. An oxygen supply branch pipe (32) is provided on the surface of the oxygen supply pipe (31). One end of the oxygen supply branch pipe (32) is connected to a microporous aeration stone (33). A support frame (34) is attached to the surface of the microporous aeration stone (33). A catalyst (35) is provided inside the microporous aeration stone (33). An air outlet pipe (36) is provided inside the microporous aeration stone (33). An air outlet branch pipe (37) is provided on the surface of the air outlet pipe (36). A gas-liquid separation valve (38) is provided inside the air outlet branch pipe (37).

2. The oxidation tower for hydrogen peroxide production according to claim 1, characterized in that: The tower body structure includes a base plate (11), and a tower body (12) with a built-in temperature sensor is fixedly connected to the top of the base plate (11). A sealing cover (13) is provided on the top of the tower body (12).

3. An oxidation tower for the production of hydrogen peroxide according to claim 2, characterized in that: The tower body (12) is equipped with a circulating cooling pipe (14) inside, and the two ends of the circulating cooling pipe (14) are equipped with connecting pipes (15) for external cooling liquid circulation equipment.

4. An oxidation tower for the production of hydrogen peroxide according to claim 3, characterized in that: The top of the sealing cap (13) is provided with a reaction liquid delivery pipe (16), and the bottom side of the tower body (12) is provided with a reaction liquid discharge pipe (17).

5. An oxidation tower for the production of hydrogen peroxide according to claim 4, characterized in that: The inner wall of the tower body (12) is fixedly connected to the surface of the support frame (34), and the surfaces of the oxygen supply pipe (31) and the gas outlet pipe (36) are fixedly connected to the inside of the sealing cover (13).

6. An oxidation tower for the production of hydrogen peroxide according to claim 1, characterized in that: The spraying mechanism includes a partition plate (21), the surface of which is fixedly connected to the inner wall of the tower body (12), and a diversion cavity (22) is fixedly connected to the bottom of the partition plate (21), and a diversion pipe (23) is provided on the surface of the diversion cavity (22).

7. An oxidation tower for the production of hydrogen peroxide according to claim 6, characterized in that: The surface of the diversion pipe (23) is provided with spray micro-holes, and the bottom of the diversion cavity (22) is fixedly connected to a delivery pump (24).

8. An oxidation tower for the production of hydrogen peroxide according to claim 7, characterized in that: The input end of the delivery pump (24) is connected to the top of the partition plate (21) through the first pipe (25), and the output end of the delivery pump (24) is connected to the inside of the diversion chamber (22) through the second pipe (26).

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