A catalytic reaction device for sinomenine hydrochloride production wastewater

Abstract

This invention discloses a catalytic reaction device for wastewater from the production of sinomenine hydrochloride, belonging to the field of chemical wastewater treatment technology. It includes a tank with a sealed cover at the top, and a pressure detector connected to a controller at the top of the cover. An injection device for injecting reagents into the tank is located on the outside of the tank. The injection device includes an injection tank fixed to the tank, with a first pipe connected to the tank body at the top and a second pipe connected to the tank body at the bottom. During the reaction, the internal pressure of the tank accelerates the injection of reagents from the injection tank into the tank body. A first control valve connected to the controller is installed on the second pipe, controlling the opening and closing degree of the second pipe. This invention addresses the problem of effectively controlling the redox reaction in wastewater generated during the preparation of sinomenine hydrochloride, improving reaction safety while ensuring normal reaction operation.

Description

Technical Field

[0001] This invention belongs to the field of chemical wastewater treatment technology, specifically a catalytic reaction device for wastewater from the production of hydrochloric acid sinomenine. Background Technology

[0002] Sinomenine hydrochloride is a drug used clinically to treat diseases such as rheumatoid arthritis. The preparation process of Sinomenine is extremely complex, generating a certain amount of wastewater at each stage, especially during percolation, extraction, and decarbonization. This wastewater contains many toxic and harmful substances and needs to be treated to meet pharmaceutical wastewater discharge standards before discharge. For example, the invention patent CN110117137B discloses a method and system for treating wastewater from the production of Sinomenine hydrochloride, providing a method for treating pharmaceutical wastewater. In the entire wastewater treatment process, the catalytic reduction reaction is a key controlled step. The reaction equations for this step are: CHCl3 + H2O2 = HCl + H2O + COCl2, COCl2 + H2O = 2HCl + CO2. Because the reaction is very rapid and produces the toxic substance COCl2, it is hoped that a device specifically designed for this catalytic reduction reaction can be developed to effectively control the reaction and reduce the diffusion of toxic substances. Summary of the Invention

[0003] To address the above problems, this invention provides a catalytic reaction device for wastewater from the production of sinomenine hydrochloride, which effectively controls the redox reaction in the wastewater generated during the preparation of sinomenine hydrochloride, thereby improving reaction safety while ensuring the normal progress of the reaction.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A catalytic reaction device for wastewater from the production of sinomenine hydrochloride includes a tank, a cover sealed on the top of the tank, a pressure detector installed on the top of the cover, and the pressure detector connected to a controller.

[0006] The outside of the tank is provided with a drug injection device for injecting drugs into the tank. The drug injection device includes a drug injection can that is fixed to the tank. The top of the drug injection can is provided with a first pipe that communicates with the tank, and the bottom of the drug injection can is provided with a second pipe that communicates with the tank.

[0007] During the reaction, the internal pressure of the tank pushes the drug in the injection tank to be injected into the tank at an accelerated rate. The second pipeline is equipped with a first control valve connected to the controller, which controls the opening and closing degree of the second pipeline.

[0008] As a further improvement to the above scheme, a third pipe is connected to the top of the cover, and the third pipe is connected to a pressure source for injecting pressure into the tank and an energy storage device for facilitating pressure release in the tank.

[0009] The tank is also equipped with a fourth pipe, and a second control valve is installed on the fourth pipe.

[0010] As a further improvement to the above solution, the inside of the tank is provided with a flow guide, and a lifting device is connected to the flow guide to drive its up and down movement.

[0011] The flow guide has a removable package containing a catalyst.

[0012] As a further improvement to the above solution, a fan blade is rotatably mounted on the guide member, and a drive source mounted on the cover is connected to the fan blade.

[0013] The guide is a vertically arranged tube, and when the fan blades rotate, the water inside the guide passes through the enclosure from top to bottom, forming a circulation around the guide.

[0014] As a further improvement to the above scheme, a drain pipe is fixedly installed at the end of the second pipe that extends into the tank. The lower end of the drain pipe is provided with a flared mouth, and the upper end is provided with several fine holes.

[0015] As a further improvement to the above solution, the guide plate is provided inside to support the fan blades. The support plate has several first through holes to facilitate the flow of water, and a sleeve is provided on the support plate.

[0016] A movable plate is movably mounted on the sleeve, and several second through holes are provided on the movable plate. The sleeve is also provided with a guide groove to facilitate the movement of the movable plate. The movable plate is fixed to the bottom of the package, and a support rod is provided on the top of the package. The support rod is detachably fixed between the guide and the sleeve.

[0017] As a further improvement to the above solution, the package is a cylindrical network structure, and a spring that pulls and contracts towards the center is provided between the upper and lower top surfaces of the package.

[0018] As a further improvement to the above solution, the package has upper and lower sections, the upper section being cylindrical and the lower section being a grooved cylindrical section.

[0019] As a further improvement to the above scheme, the drug injection device also includes a drug storage tank. The bottom of the drug storage tank is provided with a drug delivery pipe to facilitate the extraction of the drug. The outlet end of the drug delivery pipe is connected to a fifth pipe that communicates with the drug injection tank. A one-way valve is installed on the fifth pipe.

[0020] As a further improvement to the above solution, a spray pipe is provided at the bottom of the cover.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. The injection tank serves as an intermediate device during drug injection, avoiding the risk of a sudden pressure surge caused by rapid reaction after injecting the drug all at once. The first pipeline connects the injection tank and the main tank, allowing the injection speed to be gradually increased by controlling the pressure within the first pipeline. A pressure detector monitors the pressure inside the main tank. When the pressure change is too large, the controller will control the first control valve to reduce the drug supply, and vice versa. This allows for adjustments to the injection based on real-time pressure changes, ensuring the safety of the reaction.

[0023] 2. The high pressure of the reaction can be stored by the energy storage device. After the reaction is completed, the pressure in the tank can continue to rise by releasing the stored energy. When the second control valve is opened, the wastewater after the reaction can be discharged through the fourth pipe. The pressure source is used to supplement the pressure when the pressure is insufficient to ensure that all the wastewater is sent out.

[0024] 3. During the rotation of the fan blades, the water flow will be driven to form a circulating water flow from top to bottom and from inside to outside around the guide component. This allows the reagent and chloroform in the sewage to react fully, and the downward flow of water can cause the COCl2 produced by the reaction to flow downward with the water, thereby increasing the contact time with the water and reducing the leakage into the air. When the water flows through the drainage pipe, it will carry the reagent upward and enter the packaging component with the water flow, so as to carry out the reaction.

[0025] 4. By setting the package as a network structure, the catalyst, water flow, and reagents can fully contact each other. Under the action of the spring, the package tends to shrink towards the center. The guide groove guides the up-and-down movement of the movable plate, allowing it to move up and down in a rotating posture. Moreover, the speed of the fan blades can be controlled by the drive source of the fan blades, causing the speed of the water flow to change. The water flow moves downward and impacts the package and the movable plate, causing the movable plate to rotate up and down repeatedly. This drives the package to twist and change continuously, activating the catalyst inside the package. As a result, the chloroform in the water flowing through the package can be reacted, improving the degree of reaction completeness. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 for Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0028] Figure 3 for Figure 1 A magnified schematic diagram of the local structure at point B;

[0029] Figure 4 for Figure 1 A magnified schematic diagram of the structure at point C in the middle;

[0030] Figure 5 This is a schematic diagram showing the state of the package when the movable plate is at its lowest point.

[0031] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure along the DD direction;

[0032] Figure 7 for Figure 5 Schematic diagram of the cross-sectional structure in the middle EE direction;

[0033] Figure 8 This is a schematic diagram of another structure for a package;

[0034] Figure 9 for Figure 8 A top-view structural diagram of the package mounted on the movable plate.

[0035] In the diagram: 10. Tank body; 11. Cover; 12. Injection tank; 13. First control valve; 14. First pipeline; 15. Second pipeline; 16. Pressure detector; 17. Third pipeline; 18. Pressure source; 19. Energy storage device; 20. Fourth pipeline; 21. Second control valve; 22. Flow guide; 23. Package; 24. Fan blade; 25. Drain pipe; 26. Support plate; 27. Sleeve; 28. Movable plate; 29. ​​Guide groove; 30. Support rod; 31. Spring; 32. Storage tank; 33. Delivery pipe; 34. Fifth pipeline; 35. Spray pipe. Detailed Implementation

[0036] To enable those skilled in the art to better understand the technical solution, the present invention will be described in detail below with reference to embodiments. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0037] like Figure 1-9 As shown, the specific solution of this embodiment is as follows: a catalytic reaction device for wastewater from the production of hydrochloric acid sinomenine includes a tank 10, a cover 11 is sealed on the top of the tank 10, the cover 11 is detachably mounted on the tank 10, a pressure detector 16 is mounted on the top of the cover 11, the pressure detector 16 is connected to a controller, the controller is a PLC controller, and is arranged in a separate electrical control box for controlling the electrical components of the entire device;

[0038] An injection device for injecting medicine into the tank 10 is provided on the outside of the tank body 10. The injection device includes an injection tank 12 fixed to the tank body 10. The top of the injection tank 12 is provided with a first pipe 14 that communicates with the tank body 10. Specifically, the first pipe 14 is a connecting pipe with a small diameter, used to connect the injection tank 12 with the air pressure inside the tank body 10. The injection device also includes a storage tank 32. The bottom of the storage tank 32 is provided with a delivery pipe 33 that facilitates the extraction of medicine. The outlet end of the delivery pipe 33 is connected to a fifth pipe 34 that communicates with the injection tank 12. A one-way valve is provided on the fifth pipe 34. The medicine in the storage tank 32 is extracted through the delivery pipe 33 and injected into the injection tank 12. The one-way valve on the fifth pipe 34 prevents the gas in the tank body 10 from flowing back into the delivery pipe 33.

[0039] The bottom of the injection tank 12 is provided with a second pipe 15 that communicates with the tank body 10, such as... Figure 1 As shown, the second pipe 15 has a vertical through structure inside the tank 10, which allows the internal and external air pressures of the part of the second pipe 15 inside the tank 10 to be connected, making it easier for the medicine to be injected into the tank 10.

[0040] During the reaction, carbon dioxide is produced, causing the pressure inside tank 10 to rise. Therefore, the pressure in tank 10 and injection tank 12 is increased via the first pipe 14. The internal pressure of tank 10 forces the agent in injection tank 12 to be injected into tank 10 more rapidly, achieving automatic accelerated injection of the agent. However, to control the reaction efficiency and avoid safety hazards caused by equipment vibration due to a sudden increase in pressure after the reaction, a first control valve 13 connected to a controller is installed on the second pipe 15. The first control valve 13 is specifically a solenoid valve, but it is normally open when not energized. The energization is used to control the amount of the normally open valve, thereby controlling the opening and closing of the second pipe 15 through the first control valve 13 to control the amount of injected agent. The pressure detected by the pressure detector 16 is analyzed within the PLC control system. When the controller analyzes that the air pressure rises too quickly or falls too low within a certain period of time, it will adjust the first control valve 13. Therefore, in this way, the addition of the agent can be controlled, and the amount of agent can be controlled according to the actual situation. This allows for dynamic adjustment and control of the reaction, improving the controllability of the reaction and the safety of the equipment.

[0041] like Figure 1 , 2As shown, in a preferred embodiment, the top of the cover 11 is connected to a third pipe 17, which is an airflow pipe. A control valve is also provided on the third pipe 17 to control its opening and closing. A pressure source 18 for injecting pressure into the tank 10 and an energy storage device 19 for facilitating pressure release in the tank 10 are connected to the third pipe 17. Specifically, the pressure source 18 is an air pump, and the energy storage device 19 is mainly used to collect carbon dioxide generated after the reaction in the tank 10, thereby achieving pressure storage after the reaction. A fourth pipe 20 is also provided on the tank 10, and a second control valve 21 is provided on the fourth pipe 20. After the reaction is completed, by releasing the pressure in the energy storage device 19, the wastewater after the reaction in the tank 10 can be forced out under pressure. The fourth pipe 20 is configured in an upward "n" shape to prevent solids in the wastewater from being discharged with the liquid.

[0042] As a preferred embodiment of the above embodiment, the tank 10 is provided with a flow guide 22. Specifically, the flow guide 22 is a vertically arranged tubular structure. A lifting device is connected to the flow guide 22 to drive its up and down movement. Specifically, the lifting device includes a slide rod that slides between itself and the cover 11. A drive source for driving the slide rod to move up and down is provided on the cover 11. The drive source can be a linear drive element such as an electric push rod or a cylinder. A detachable wrapping element 23 is arranged inside the flow guide 22. The wrapping element 23 is a mesh structure and contains a catalyst. This can fix the catalyst while ensuring that the wastewater and reagents are in full contact with the catalyst, providing a better reaction effect. A spray pipe 35 is provided at the bottom of the cover 11 to spray water mist into the tank 10. After the reaction is completed, the flow guide 22 and the wrapping element 23 can be lifted up by the lifting device. The spray pipe 35 will clean the surface of the flow guide 22 and the wrapping element 23, reducing the corrosion of the generated HCl, and can also absorb the residual COCl2.

[0043] like Figure 1 , 3 As shown in 4, 6, 7, 8, and 9, in a preferred embodiment, a fan blade 24 is rotatably mounted on the guide member 22, and a drive source mounted on the cover 11 is connected to the fan blade 24. Specifically, the drive source is a motor mounted on the top of the cover 11, and the motor is connected to a reducer. The output shaft of the reducer and the rotation shaft of the fan blade 24 are splined together, so that the fan blade 24 can adapt to the up-and-down movement during rotation.

[0044] When the motor drives the fan blade 24 to rotate, the fan blade 24 disturbs the water flow, causing the water in the guide member 22 to flow from top to bottom through the enclosure 23 and form a circulating flow around the guide member 22. Therefore, under the flowing water, as much chloroform in the wastewater as possible can pass through the enclosure 23 and come into contact with the catalyst, making it easier for the chloroform to be completely reacted. Moreover, the water flows from top to bottom, which allows the COCl2 produced during the reaction to flow downwards, thereby increasing the contact time with water and reducing the diffusion into the air, making the reaction safer.

[0045] As a preferred embodiment of the above, the end of the second pipe 15 extending into the tank 10 is connected to a drainage pipe 25. The lower end of the drainage pipe 25 is provided with a flared opening, and the upper end is provided with several fine holes. The flared opening is mainly to facilitate the upward flow of water outside the guide member 22, making it easier to pass through the drainage pipe 25. When the water flows through the drainage pipe 25, it will carry out the medicine inside the drainage pipe 25. The fine holes at the upper end of the drainage pipe 25 make it easier for the medicine to diffuse.

[0046] As a preferred embodiment of the above embodiment, the guide member 22 is provided with a support plate 26 inside to support the fan blade 24, such as Figure 7 As shown, the support plate 26 has several first through holes to facilitate water flow. A sleeve 27 is provided on the support plate 26. The sleeve 27 is fixed to the support plate 26. The rotating shaft of the fan blade 24 passes through the sleeve 27 and is rotatably arranged with the sleeve 27. A quick-release connector is also provided above the sleeve 27 to facilitate the transmission between the fan blade 24 and the drive source. The quick-release connector can facilitate the replacement of the package 23.

[0047] A movable plate 28 is movably disposed on the sleeve 27, and the movable plate 28 is provided with several second through holes, such as... Figure 7 , 9 As shown, the sleeve 27 is also provided with a guide groove 29 to facilitate the movement of the movable plate 28. Guided by the guide groove 29, the movable plate 28 moves up and down in a rotating manner. The movable plate 28 is fixed to the bottom of the package 23, and a support rod 30 is provided at the top of the package 23. The support rod 30 is detachably fixed between the guide member 22 and the sleeve 27. Figure 3 , 6As shown, the support rod 30 mainly serves to fix and support the top of the package 23. By opening the top of the package 23, it facilitates the downward flow of water through the package 23 to contact and react with the catalyst. Generally, the package 23 is a cylindrical network structure, and a spring 31 is provided between the upper and lower top surfaces of the package 23 to pull and contract towards the center. The catalyst is filled inside the package 23, and the spring 31 can tighten the package 23, so that the package 23 holds the catalyst tightly. In addition, the package 23 can also be provided with... Figure 8 Specifically, the structure of the encapsulation component 23 has upper and lower sections. The upper section is cylindrical, and the lower section is a grooved cylinder. In the second structure, during the upward pulling and twisting of the spring 31, the grooved structure is twisted into a spiral shape, which provides more guidance for the water flow and makes the water flow have a greater impact on the encapsulation component 23. However, when it moves to a straight groove shape, the impact force decreases and it will rebound under the pull of the spring 31, thus having more up-and-down undulating movement, making the catalyst inside the encapsulation component 23 more easily move. Regardless of the structure, under normal circumstances, the tension of the spring 31 pulls the movable plate 28 upward, and the encapsulation component 23 is compressed into a shape like... Figure 1 In the same state, i.e., the middle is twisted, the internal space is compressed, the catalyst is tightly held, and the range of motion is small, the flow speed of the water can be changed by controlling the rotation speed of the fan blade 24. When the water flow speed is high, the water flow can generate a downward thrust on the package 23 and the movable plate 28, thereby causing the movable plate 28 to move downward, thus causing the package 23 to rotate to such a position. Figure 5 This increases the space inside the package 23, making the catalyst more mobile. Therefore, the frame can control the rotation speed of the fan blades 24 to change the shape of the package 23 up and down, thereby enabling the catalyst to move. Especially during the reaction process, this ensures that chloroform can be fully reacted, improving the reaction quality.

[0048] The specific working principle of this invention is as follows: First, the wastewater to be treated is injected into the tank 10. Then, the fan blade 24 is controlled to rotate, causing the wastewater to circulate within the tank 10. Then, the drug delivery pipe 33 is controlled to extract the drug from the storage tank 32 according to the specified ratio and inject it into the injection tank 12.

[0049] The agent injected into the injection tank 12 will automatically pass through the first control valve 13, and enter the sewage through the second pipe 15 and the drainage pipe 25. When it passes through the catalyst in the package 23, it reacts with the chloroform in the sewage at an accelerated rate. The carbon dioxide produced at the end of the reaction is collected by the energy storage device 19. The rise and fall of the gas pressure in the tank 10 is detected by the pressure detector 16 and transmitted to the controller. The controller controls the opening and closing of the first control valve 13 and automatically controls the injected agent, thereby automatically controlling the reaction speed.

[0050] After the reaction is complete, the second control valve 21 is opened and the pressure stored in the energy storage device 19 is released. The wastewater after the reaction in the tank 10 is sent out through the fourth pipe 20. When the pressure is insufficient, the pressure source 18 is used to pressurize the wastewater and send it out. Then, the tank is ready to carry out the next reaction.

[0051] It should be noted that, in this document, the terms "including," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Specific examples have been used in this document to illustrate the principles and implementation methods of the present invention. These examples are merely for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be pointed out that, due to the limitations of written expression and the objective existence of infinite specific structures, those skilled in the art can make several improvements, modifications, or variations without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A catalytic reaction apparatus for wastewater from the production of senna hydrochloride, characterized in that, Includes a tank (10), the top of the tank (10) is sealed with a cover (11), the top of the cover (11) is provided with a pressure detector (16), and the pressure detector (16) is connected to a controller; An injection device for injecting medicine into the tank (10) is provided on the outside of the tank (10). The injection device includes an injection tank (12) that is fixed to the tank (10). A first pipe (14) communicating with the tank (10) is provided on the top of the injection tank (12), and a second pipe (15) communicating with the tank (10) is provided on the bottom of the injection tank (12). During the reaction, the internal pressure of the tank (10) pushes the drug in the injection tank (12) to be injected into the tank (10) at an accelerated rate. The second pipe (15) is equipped with a first control valve (13) connected to the controller. The first control valve (13) controls the opening and closing degree of the second pipe (15). The top of the cover (11) is connected to a third pipe (17), and the third pipe (17) is connected to a pressure source (18) that injects pressure into the tank (10) and an energy storage device (19) that facilitates pressure relief inside the tank (10). A fourth pipe (20) is also provided on the tank body (10), and a second control valve (21) is provided on the fourth pipe (20); a flow guide (22) is provided inside the tank body (10), and a lifting device that drives it to move up and down is connected to the flow guide (22); The flow guide (22) is detachably arranged with a package (23), and the package (23) contains a catalyst; A fan blade (24) is rotatably arranged inside the guide (22), and a drive source is connected to the fan blade (24) on the cover (11). The guide (22) is a vertically arranged tube, and when the fan blade (24) rotates, the water flow inside the guide (22) passes through the wrapping (23) from top to bottom, and forms a circulation around the guide (22).

2. The catalytic reaction apparatus for wastewater from the production of senna hydrochloride according to claim 1, characterized in that, The second pipe (15) extends into the end of the tank (10) and is connected to a drain pipe (25). The lower end of the drain pipe (25) is provided with a bell mouth, and the upper end is provided with several fine holes.

3. The catalytic reaction apparatus for wastewater from the production of senna hydrochloride according to claim 1, characterized in that, The guide (22) has a support plate (26) inside to support the fan blade (24). The support plate (26) has several first through holes to facilitate water flow. The support plate (26) is provided with a sleeve (27). A movable plate (28) is movably provided on the sleeve (27). Several second through holes are provided on the movable plate (28). A guide groove (29) is also provided on the sleeve (27) to facilitate the movement of the movable plate (28). The movable plate (28) is fixed to the bottom of the package (23). A support rod (30) is provided on the top of the package (23). The support rod (30) is detachably fixed between the guide (22) and the sleeve (27).

4. The catalytic reaction apparatus for wastewater from the production of sinomenine hydrochloride according to claim 1, characterized in that, The package (23) is a cylindrical network structure, and a spring (31) that pulls and contracts towards the center is provided between the upper and lower top surfaces of the package (23).

5. A catalytic reaction apparatus for wastewater from the production of senna hydrochloride according to claim 4, characterized in that, The package (23) has upper and lower sections, the upper section being cylindrical and the lower section being a grooved cylindrical section.

6. A catalytic reaction apparatus for wastewater from the production of sinomenine hydrochloride according to claim 1, characterized in that, The injection device also includes a drug storage tank (32), and a drug delivery pipe (33) is provided at the bottom of the drug storage tank (32) to facilitate the extraction of the drug. The outlet end of the drug delivery pipe (33) is connected to a fifth pipe (34) that communicates with the injection tank (12). A one-way valve is provided on the fifth pipe (34).

7. A catalytic reaction apparatus for wastewater from the production of sinomenine hydrochloride according to any one of claims 1-6, characterized in that, A spray pipe (35) is provided at the bottom of the cover (11).

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