Hydrogen peroxide production waste liquid recovery equipment

Abstract

This utility model discloses a hydrogen peroxide production waste liquid recovery device, including a waste liquid recovery and treatment tank. A filtration chamber is provided on one side of the waste liquid recovery and treatment tank, and an acidification adjustment chamber is provided on the other side. The capacity of the acidification adjustment chamber is larger than that of the filtration chamber. A mixing tank is installed inside the acidification adjustment chamber. This utility model uses an acid metering component on the mixing tank to ensure the liquid level in the mixing tank is level with the liquid level tube, based on the principle of communicating vessels. Users can calculate the dosage of acid solution to add based on the position of the scale line indicated by the indicator, thereby effectively adjusting the pH value of the waste liquid and avoiding the impact of adding too little or too much acid solution on pH adjustment. A stirring and mixing component is installed in both the mixing tank and the waste liquid mixing tank to stir the acid solution in the mixing tank and the acid solution in the mixing tank, ensuring thorough and uniform mixing, and facilitating subsequent effective cleaning of the tank.

Description

Technical Field

[0001] This utility model relates to the field of chemical waste liquid treatment technology, specifically a hydrogen peroxide production waste liquid recovery device. Background Technology

[0002] The recycling of hydrogen peroxide production waste liquid mainly includes pretreatment, acidification treatment, supercritical reaction, strong oxidant treatment, and biochemical treatment. Through these treatment steps, harmful substances in hydrogen peroxide production waste liquid can be effectively removed, meeting environmental protection standards and realizing the recycling of waste liquid.

[0003] The prior art, disclosed in patent document CN215712294U, presents the following technical solution: a wastewater treatment device for hydrogen peroxide production, belonging to the field of hydrogen peroxide production wastewater technology. This wastewater treatment device includes a wastewater treatment unit, which comprises a bottom tank assembly and a feeding assembly. Waste liquid is added through an inlet pipe, a mixing reagent is added through an inlet, and calcium oxide is added through a feed inlet. The reagent and calcium oxide are mixed to form lime slurry.

[0004] The above technical solution sprays the mixed reagent into the waste liquid through a leak, but it does not have a metering structure, making it inconvenient to determine the dosage of the added mixed reagent and affecting the acidification adjustment of the waste liquid. Utility Model Content

[0005] The purpose of this invention is to provide a hydrogen peroxide production waste liquid recovery device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydrogen peroxide production waste liquid recovery device, including a waste liquid recovery and treatment tank, a filtration chamber is provided on one side of the waste liquid recovery and treatment tank, an acidification adjustment chamber is provided on the other side of the waste liquid recovery and treatment tank, the capacity of the acidification adjustment chamber is greater than the capacity of the filtration chamber, and a mixing tank is provided inside the acidification adjustment chamber.

[0007] A cover plate two is bolted to the upper end of the acidification regulating chamber and located on the mixing tank. A mixing tank is installed on the cover plate two. A stirring and mixing assembly is installed inside the mixing tank and the mixing tank. A connecting pipe is provided between the mixing tank and the mixing tank. A solenoid valve is installed on the connecting pipe. An acid metering assembly is fixedly installed at the through hole on the bottom side of the mixing tank. The acid metering assembly includes a level pipe. The level pipe is located on the front side of the waste liquid recovery and treatment tank and is connected to the mixing tank. A discharge pipe one is provided at the bottom of the horizontal section of the level pipe. A valve is installed on the pipe. A screw cap is threaded to the top of the vertical section of the liquid level pipe. A transparent plate is embedded in the groove on the front side of the liquid level pipe. Scale lines are provided on the outer side of the transparent plate. Limiting grooves are formed on the inner wall of the liquid level pipe in the circumferential direction. An annular bottom plate is fixedly connected to the lower part of the inner wall of the liquid level pipe and flush with the bottom of the mixing tank. Limiting protrusions are slidably connected in the limiting grooves. A buoyancy plate is provided between the limiting protrusions. An indicator plate is provided below the front side of the buoyancy plate. The indicator plate rests against the inner side of the transparent plate to indicate the scale.

[0008] In the above technical solution, the user can calculate the dosage of acid solution to be added based on the position of the scale line indicated by the indicator, thereby effectively adjusting the pH value of the waste liquid and avoiding the impact of adding too little or too much acid solution on the pH adjustment of the waste liquid.

[0009] As a further preferred embodiment of this technical solution, a fixed upright plate is fixedly connected to the middle of the front and rear inner walls of the filter chamber, and a filter screen frame is snapped between the fixed upright plate and the waste liquid recovery and treatment tank.

[0010] In the above technical solution, the filter screen can pre-treat the waste liquid undergoing acidification adjustment, filter solid particles and suspended matter, and can be pulled out for cleaning afterwards.

[0011] As a further preferred embodiment of this technical solution, a pump body is installed inside the filter chamber and next to the filter screen frame. The pump body has a second inlet pipe at its outlet end, and the other end of the second inlet pipe is connected to the top of the mixing tank.

[0012] As a further preferred embodiment of this technical solution, the waste liquid recycling and treatment tank is provided with an inlet pipe at one end next to the filter chamber, and a discharge pipe is provided at the other end of the waste liquid recycling and treatment tank that is connected to the mixing tank.

[0013] As a further preferred embodiment of this technical solution, a cover plate is provided at the upper end of the waste liquid recycling and treatment tank and above the filter chamber via a hinge.

[0014] As a further preferred embodiment of this technical solution, the mixing assembly includes a stirring motor, which is installed at the top of the mixing tank. The output end of the stirring motor is provided with a rotating rod, which is located inside the mixing tank and the mixing vessel. C-shaped mounting plates are arranged in the circumferential direction at both the upper and lower ends of the rotating rod. C-shaped scrapers are fixedly connected to the outer side of each C-shaped mounting plate. A stirring rod is provided between the C-shaped mounting plate and the rotating rod by rivets.

[0015] The above technical solution can stir the acid solution in the mixing tank and the waste liquid and acid solution in the mixing tank to make them fully and evenly mixed, and also facilitates the effective cleaning of the tank body in the future.

[0016] As a further preferred embodiment of this technical solution, a stirring rod is provided in the C-shaped mounting plate above the rotating rod, and symmetrical stirring rods are provided in the C-shaped mounting plate below the rotating rod.

[0017] This utility model provides a hydrogen peroxide production waste liquid recovery device, which has the following beneficial effects:

[0018] (1) This utility model sets an acid metering component on the mixing tank, so that the liquid level in the mixing tank is level with the liquid level tube according to the principle of communicating vessels. The user can calculate the dosage of acid solution to be added according to the position of the scale line pointed to by the indicator plate, thereby effectively adjusting the pH value of the waste liquid and avoiding the effect of adding too little or too much acid solution on the pH adjustment of the waste liquid.

[0019] (2) By setting a stirring and mixing component in the mixing tank and the mixing tank, this utility model can stir the acid solution in the mixing tank and the waste liquid and acid solution in the mixing tank, so that they are fully mixed and uniform, and also facilitates the effective cleaning of the tank body in the future. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a partial cross-sectional view of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the filter chamber and acidification adjustment chamber of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the stirring and mixing component of this utility model;

[0024] Figure 5 This is an enlarged view of Figure A of this utility model;

[0025] In the diagram: 1. Waste liquid recovery and treatment tank; 11. Filter chamber; 111. Fixed upright plate; 112. Filter screen frame; 12. Acidification adjustment chamber; 13. Inlet pipe one; 14. Cover plate one; 15. Cover plate two; 2. Mixing tank; 21. Pump body; 22. Inlet pipe two; 23. Mixing tank; 24. Connecting pipe; 25. Stirring and mixing assembly; 251. C-shaped mounting plate; 252. C-shaped scraper; 253. Stirring rod; 254. Stirring motor; 26. Acid metering assembly; 261. Liquid level pipe; 262. Discharge pipe one; 263. Screw cap; 2611. Limiting groove; 2612. Transparent plate; 2613. Scale line; 2614. Annular bottom plate; 2615. Buoyancy plate; 2616. Limiting protrusion; 2617. Indicator plate; 27. Discharge pipe two. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0027] This utility model provides a technical solution: such as Figure 1 and Figure 3 As shown in this embodiment, a hydrogen peroxide production waste liquid recovery device includes a waste liquid recovery and treatment tank 1. A filter chamber 11 is provided on one side of the waste liquid recovery and treatment tank 1. Fixed upright plates 111 are fixedly connected to the middle of the front and rear inner walls of the filter chamber 11. A filter screen frame 112 is snapped between the fixed upright plate 111 and the waste liquid recovery and treatment tank 1. The filter screen frame 112 can pre-treat the waste liquid undergoing acidification adjustment, filtering solid particles and suspended matter, and can be pulled out for cleaning later. A cover plate 14 is provided on the upper end of the waste liquid recovery and treatment tank 1 above the filter chamber 11 via a hinge. An acidification adjustment chamber 1 is provided on the other side of the waste liquid recovery and treatment tank 1. 2. The acidification adjustment chamber 12 has a larger capacity than the filter chamber 11. A mixing tank 2 is installed inside the acidification adjustment chamber 12. A pump body 21 is installed inside the filter chamber 11 and next to the filter screen frame 112. A second inlet pipe 22 is installed at the outlet end of the pump body 21. The other end of the second inlet pipe 22 is connected to the top of the mixing tank 2. A first inlet pipe 13 is installed at one end of the waste liquid recovery and treatment tank 1 next to the filter chamber 11. A second discharge pipe 27 is installed at the other end of the waste liquid recovery and treatment tank 1 and connected to the mixing tank 2. A pH detection module, such as a pH sensor, is installed in the second discharge pipe 27. It can be connected to the control module (PLC controller) through an interface to detect the pH value of the waste liquid.

[0028] like Figure 2 and Figure 4As shown, the mixing assembly 25 includes a stirring motor 254, which is mounted on the top of the mixing tank 23. A rotating rod is provided at the output end of the stirring motor 254 and is located inside the mixing tank 23 and the mixing tank 2. C-shaped mounting plates 251 are arranged in the circumferential direction at both the upper and lower ends of the rotating rod. C-shaped scrapers 252 are fixedly connected to the outer side of the C-shaped mounting plates 251. Stirring rods 253 are set between the C-shaped mounting plates 251 and the rotating rod by rivets. One stirring rod 253 is set in the C-shaped mounting plate 251 above the rotating rod, and symmetrical stirring rods 253 are set in the C-shaped mounting plate 251 below the rotating rod. By setting the mixing assembly 25 in the mixing tank 23 and the mixing tank 2, the acid solution in the mixing tank 23 and the waste liquid and acid solution in the mixing tank 2 can be stirred to make them fully mixed and uniform, and it also facilitates the effective cleaning of the tanks in the future.

[0029] like Figure 2 and Figure 5 As shown, a cover plate 15 is bolted to the upper end of the acidification regulating chamber 12 and located on the mixing tank 2. A mixing tank 23 is installed on the cover plate 15. A stirring and mixing assembly 25 is installed in both the mixing tank 23 and the mixing tank 2. A connecting pipe 24 is provided between the mixing tank 23 and the mixing tank 2. A solenoid valve is installed on the connecting pipe 24. An acid metering assembly 26 is fixedly installed at the through hole on the bottom side of the mixing tank 2. The acid metering assembly 26 includes a level pipe 261, which is located in front of the waste liquid recovery and treatment tank 1 and is connected to the mixing tank 2. The mixing tank 2 is connected. A discharge pipe 262 is installed at the bottom of the horizontal section of the level pipe 261. A valve is installed on the level pipe 261. A screw cap 263 is threaded to the top of the vertical section of the level pipe 261. A transparent plate 2612 is embedded in a groove on the front side of the level pipe 261. Scale lines 2613 are provided on the outer side of the transparent plate 2612. A limit groove 2611 is formed on the inner wall of the level pipe 261 in the circumferential direction. An annular bottom plate 2614 is fixedly connected to the lower part of the inner wall of the level pipe 261, flush with the bottom of the mixing tank 2. Limiting protrusions 2616 are slidably connected within the grooves 2611. The grooves 2611 and the protrusions 2616 limit the indicator plate 2617 on the buoyancy plate 2615, preventing the indicator plate 2617 from not pointing onto the transparent plate 2612, thus making it difficult to determine the liquid level. The buoyancy plate 2615 is positioned between the limiting protrusions 2616, and the indicator plate 2617 is positioned below the front side of the buoyancy plate 2615. The indicator plate 2617 rests against the inside of the transparent plate 2612 and is used to indicate the scale. An acid metering component 26 is installed on the mixing tank 2. Based on the principle of communicating vessels, the liquid level in the mixing tank 2 is made level with the liquid level tube 261. The user can calculate the dosage of acid solution to be added according to the position of the scale line 2613 pointed to by the indicator plate 2617, thereby effectively adjusting the pH value of the waste liquid and avoiding the impact of adding too little or too much acid solution on the pH adjustment of the waste liquid. By measuring the height of the liquid level tube 261, combined with the geometric parameters of the mixing tank 2 and the acid density, the dosage of acid to be added can be accurately calculated, which is a new technology in the field.

[0030] This utility model provides a hydrogen peroxide production waste liquid recovery device. The specific working principle is as follows: Waste liquid is injected into the filter screen frame 112 through the inlet pipe 13. The filter screen frame 112 intercepts and filters fixed particles and suspended solids. The control module starts the pump body 21, allowing the filtered waste liquid to enter the mixing tank 2 through the inlet pipe 22. Sulfuric acid solution to adjust the waste liquid is added from the inlet above the mixing tank 23. The control module starts the stirring motor 254, driving the rotating rod to rotate, ensuring thorough mixing by the upper and lower stirring rods 253. Simultaneously, the control module opens the connecting pipe 2. The solenoid valve on 4 adds acid solution to the mixing tank 2. Due to the principle of communicating vessels, the liquid level rise of the level pipe 261 is the same as the liquid level rise of the mixing tank 2. The amount of acid added can be accurately calculated by using the geometric parameters of the mixing tank 2 and the acid density. The pH sensor in the discharge pipe 27 is used to detect the pH value of the waste liquid. The pH is adjusted to the qualified range of 6.5-8.5 and then stopped. The valve is opened and the waste liquid is discharged through the discharge pipe 27. Subsequent supercritical reaction, strong oxidant treatment and biochemical treatment can be carried out to recycle the waste liquid.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydrogen peroxide production waste liquid recovery device, comprising a waste liquid recovery and treatment tank (1), characterized in that: The waste liquid recycling and treatment tank (1) is provided with a filter chamber (11) on one side and an acidification adjustment chamber (12) on the other side. The capacity of the acidification adjustment chamber (12) is greater than that of the filter chamber (11). A mixing tank (2) is provided inside the acidification adjustment chamber (12). The acidification regulating chamber (12) is bolted to the upper end of the mixing tank (2) and is bolted to the cover plate two (15). The mixing tank (23) is installed on the cover plate two (15). The mixing tank (23) and the mixing tank (2) are equipped with a stirring and mixing component (25). A connecting pipe (24) is provided between the mixing tank (23) and the mixing tank (2). A solenoid valve is provided on the connecting pipe (24). An acid metering component (26) is fixedly installed at the through hole on the bottom side of the mixing tank (2). The acid metering component (26) includes a level pipe (261). The level pipe (261) is located in front of the waste liquid recovery and treatment tank (1) and is connected to the mixing tank (2). A discharge pipe (262) is provided at the bottom of the horizontal section of the level pipe (261). A valve is provided on the level pipe (261). The top of the vertical section of the liquid level tube (261) is threaded with a screw cap (263). A transparent plate (2612) is embedded in the groove on the front side of the liquid level tube (261). A scale line (2613) is provided on the outside of the transparent plate (2612). A limiting groove (2611) is opened on the inner wall of the liquid level tube (261) in the circumferential direction. An annular bottom plate (2614) is fixedly connected to the bottom of the inner wall of the liquid level tube (261) and flush with the bottom of the mixing tank (2). Limiting protrusions (2616) are slidably connected in the limiting grooves (2611). A buoyancy plate (2615) is provided between the limiting protrusions (2616). An indicator plate (2617) is provided on the lower front side of the buoyancy plate (2615). The indicator plate (2617) is pressed against the inside of the transparent plate (2612) for indicating the scale.

2. The hydrogen peroxide production waste liquid recovery equipment according to claim 1, characterized in that: The middle of the front and rear inner walls of the filter chamber (11) is fixedly connected to a fixed plate (111), and a filter screen frame (112) is snapped between the fixed plate (111) and the waste liquid recycling and treatment box (1).

3. The hydrogen peroxide production waste liquid recovery equipment according to claim 1, characterized in that: A pump body (21) is installed inside the filter chamber (11) and next to the filter screen frame (112). The pump body (21) is provided with an inlet pipe (22) at the water outlet end. The other end of the inlet pipe (22) is connected to the top of the mixing tank (2).

4. The hydrogen peroxide production waste liquid recovery equipment according to claim 1, characterized in that: The waste liquid recycling and treatment box (1) is provided with an inlet pipe (13) at one end next to the filter chamber (11), and a discharge pipe (27) is provided at the other end of the waste liquid recycling and treatment box (1) and connected to the mixing tank (2).

5. The hydrogen peroxide production waste liquid recovery equipment according to claim 1, characterized in that: The waste liquid recycling tank (1) is equipped with a cover plate (14) at the upper end and above the filter chamber (11) via a hinge.

6. The hydrogen peroxide production waste liquid recovery equipment according to claim 1, characterized in that: The mixing assembly (25) includes a stirring motor (254), which is installed on the top of the mixing tank (23). The output end of the stirring motor (254) is provided with a rotating rod, which is located inside the mixing tank (23) and the mixing tank (2). C-shaped mounting plates (251) are arranged in the circumferential direction at the upper and lower ends of the rotating rod. C-shaped scrapers (252) are fixedly connected to the outer side of the C-shaped mounting plates (251). A stirring rod (253) is provided between the C-shaped mounting plates (251) and the rotating rod by rivets.

7. The hydrogen peroxide production waste liquid recovery equipment according to claim 6, characterized in that: A stirring rod (253) is provided in the C-shaped mounting plate (251) above the rotating rod, and symmetrical stirring rods (253) are provided in the C-shaped mounting plate (251) below the rotating rod.

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