A fast mixing sulfuric acid dilution kettle

Abstract

The present application relates to a fast mixing sulfuric acid dilution kettle, which belongs to the technical field of reactors. It includes a main tank and a secondary water injection mixing tank, the main tank is provided with a stirring fan assembly, the secondary water injection mixing tank is installed on the top of the main tank, the opening of the secondary water injection mixing tank connected to the main tank is higher than the inner bottom wall of the secondary water injection mixing tank, the top of the secondary water injection mixing tank is provided with a solid waste input port, the secondary water injection mixing tank is inclinedly provided with a water injection pipe, and the opening of the water injection pipe is toward the bottom of the secondary water injection mixing tank. The present application has the effect that aluminum oxide sludge and chemical waste acid can be quickly and evenly mixed.

Description

Technical Field

[0001] The present application relates to the field of reaction kettles, and in particular to a fast mixing sulfuric acid dilution kettle. Background Art

[0002] The dilution kettle can also be called a dissolving kettle or a stirring kettle. In a narrow sense, the dilution kettle is used to dilute a certain liquid. In fact, it can also be widely used for the preparation of solutions, or the mixing of two or more materials, such as the preparation of aqua regia, acid-base neutralization reaction, etc.

[0003] Aluminum oxidation sludge and chemical waste acid are hazardous wastes that need to be properly handled. Since the two can react through a certain ratio and the adjustment of the environmental pH value, the two can be processed together to achieve the goal of comprehensive utilization. The reaction process of aluminum oxidation sludge and chemical waste acid can be carried out in a sulfuric acid dilution kettle. By putting aluminum oxidation sludge, chemical waste acid, water and sulfuric acid into the dilution kettle, and stirring the solid and liquid raw materials in the dilution kettle, the reaction process required for recovery is completed in the dilution kettle.

[0004] Since the above-mentioned aluminum oxidation sludge is mainly solid waste, directly putting it into the dilution kettle and stirring it to mix the aluminum oxidation sludge and liquid will result in uneven mixing and a slow mixing process affecting the reaction speed, and some solid waste will sink to the bottom. Utility Model Content

[0005] In order to complete the mixing of aluminum oxidation sludge and chemical disposal waste acid more quickly, the present application provides a fast mixing sulfuric acid dilution kettle.

[0006] The present application provides a fast mixing sulfuric acid dilution kettle adopts the following technical solution:

[0007] A fast mixing sulfuric acid dilution kettle comprises a main tank and a secondary water injection mixing tank, wherein the main tank is provided with a stirring fan blade assembly, the secondary water injection mixing tank is installed on the top of the main tank, the opening of the secondary water injection mixing tank communicating with the main tank is higher than the inner bottom wall of the secondary water injection mixing tank, the top of the secondary water injection mixing tank is provided with a solid waste input port, the secondary water injection mixing tank is obliquely provided with a water injection pipe, and the opening of the water injection pipe faces the bottom of the secondary water injection mixing tank.

[0008] By adopting the above technical scheme, the main tank is used as a reactor for reaction, and the mixing during the reaction is made more uniform by the stirring blade assembly in the main tank. At the same time, the aluminum oxide sludge is not directly sent into the main tank, but the aluminum oxide sludge is first placed in the secondary water injection mixing tank, and then high-pressure water is injected through the water injection pipe to impact and break up the aluminum oxide sludge, so that the aluminum oxide sludge is first dispersed to a certain extent in the secondary water injection mixing tank to become a turbid liquid, and then flows into the main tank under the impact of the water flow, so that it can be better mixed with the injected chemical waste acid and sulfuric acid in the main tank, so that the mixing of the aluminum oxide sludge and the chemical waste acid can be completed more quickly and the contact between them is more uniform. At the same time, the water that impacts the aluminum oxide sludge itself also needs to be injected into the main tank for proportioning. When the water injection is completed, the aluminum oxide sludge is dispersed.

[0009] Optionally, the bottom of the secondary water injection mixing tank is connected to the main tank and is provided with an opening and closing plate and an opening and closing component for controlling the opening and closing of the opening and closing plate.

[0010] By adopting the above technical solution, the opening and closing plates and the opening and closing components arranged at the bottom of the secondary water injection mixing tank enable the secondary water injection mixing tank to retain the solid waste evenly while, by opening the opening and closing plates, the solid waste can be dispersed and sent into the main tank as much as possible to complete the reaction.

[0011] Optionally, the main tank is provided with a final injection port, a connecting pipe inserted into the final injection port is provided at the bottom of the secondary water injection mixing tank, and the opening and closing plate is installed in the connecting pipe and slides to close the connecting pipe.

[0012] By adopting the above technical solution, the secondary water injection mixing tank can better deliver the dispersed solid waste into the main tank through the connecting pipe, reducing adhesion on the inner wall of the main tank. At the same time, the connecting pipe inserted into the final injection port also plays the role of pre-installing the secondary water injection mixing tank.

[0013] Optionally, a second connecting protrusion is protruding from the bottom of the main tank, the final injection port is opened at the second connecting protrusion, the second connecting protrusion abuts against the outer wall of the secondary water injection mixing tank, and a sealing ring is clamped between the second connecting protrusion and the secondary water injection mixing tank.

[0014] By adopting the above technical solution, a second connecting protrusion is provided, and a sealing ring is clamped between the second connecting protrusion and the secondary water injection mixing tank, so that the sealing between the secondary water injection mixing tank and the main tank is better.

[0015] Optionally, the second connecting protrusion is connected to the secondary water injection mixing tank flange.

[0016] By adopting the above technical solution, the connection strength between the secondary water injection mixing tank and the main tank is improved, and the sealing performance is also indirectly improved by cooperating with the sealing ring.

[0017] Optionally, a first connecting protrusion for installing the secondary water injection mixing tank is provided on the top of the main tank, and the first connecting protrusion is connected to the flange of the secondary water injection mixing tank.

[0018] By adopting the above technical solution, the first connecting protrusion serves as the connecting structure between the secondary water injection mixing tank and the main tank, which is connected by a flange, and the connection strength and sealing are better. At the same time, the secondary water injection mixing tank can be easily removed, maintained and installed as an independent individual.

[0019] Optionally, the first connecting protrusion is arranged to be inclined upward.

[0020] By adopting the above technical solution, the dispersed solid waste can be better injected into the main tank, and the solid waste is not easy to adhere to the inner wall of the main tank.

[0021] Optionally, the opening and closing assembly includes an opening and closing rod, which is rotatably mounted on the secondary water injection mixing tank, one end of the opening and closing rod is located inside the secondary water injection mixing tank and is threadedly rotated to pass through the opening and closing plate, and the other end of the opening and closing rod is located outside the secondary water injection mixing tank, and a limiting strip is provided inside the secondary water injection mixing tank to limit the rotation of the opening and closing plate relative to the secondary water injection mixing tank.

[0022] By adopting the above technical solution, the opening and closing plate can be driven to move by rotating the opening and closing rod, thereby achieving the function of opening and closing the connection state between the bottom of the secondary water injection mixing tank and the main tank, and the structure is simple and effective.

[0023] To sum up, the main tank acts as a reactor for reaction, and the mixing fan blade assembly in the main tank makes the mixing during the reaction more uniform. At the same time, the aluminum oxide sludge is not directly sent to the main tank, but is first placed in the secondary water injection mixing tank, and then high-pressure water is injected through the water injection pipe to impact and break up the aluminum oxide sludge, so that the aluminum oxide sludge is first dispersed to a certain extent in the secondary water injection mixing tank to become a turbid liquid, and then flows into the main tank under the impact of the water flow, so that it can be better mixed with the injected chemical waste acid and sulfuric acid in the main tank, so as to complete the mixing of the aluminum oxide sludge and the chemical waste acid more quickly and the contact between them is more uniform. At the same time, the water that impacts the aluminum oxide sludge itself also needs to be injected into the main tank for proportioning. When the water injection is completed, the aluminum oxide sludge is dispersed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the dilution kettle in the embodiment of the present application;

[0025] Figure 2 is a cross-sectional view of a dilution kettle in an embodiment of the present application;

[0026] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0027] Figure 4 It is a structural schematic diagram of the secondary water injection mixing tank in the embodiment of the present application.

[0028] Explanation of the accompanying drawings: 1. Main tank; 11. Tank body; 12. Tank cover; 13. First connecting protrusion; 131. Overflow port; 14. Second connecting protrusion; 141. Final injection port; 2. Secondary water injection mixing tank; 21. Overflow pipe; 22. Connecting pipe; 23. Injection surface; 24. Operating surface; 25. Annular protrusion; 26. Operating space; 3. Stirring fan blade assembly; 31. Motor; 32. Reducer; 33. Drive shaft; 34. Fan blade; 4. Cantilevered card plate; 5. Sealing ring; 6. Solid waste input port; 7. Water injection pipe; 8. Opening and closing plate; 91. Opening and closing lever; 92. Steering wheel; 93. Cover; 931. Rubber protrusion; 94. Limiting strip. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-4 This application is described in further detail.

[0030] The embodiment of the present application discloses a rapid mixing sulfuric acid dilution kettle.

[0031] Reference Figure 1 and Figure 2 A fast mixing sulfuric acid dilution kettle, comprising a main tank 1 and a secondary water injection mixing tank 2, wherein the main tank 1 is used as a main reaction tank, and the secondary water injection mixing tank 2 is used to break up solid waste and mix it with water, wherein the main tank 1 comprises a tank body 11 and a tank cover 12, the upper part of the tank body 11 is open, the tank cover 12 is an arc cover and closes the upper opening of the tank body 11, the tank cover 12 is fixed to the tank body 11 by flange screws, and the screws fixing the tank body 11 and the tank cover 12 are fastened around a circle, and the main tank 1 is provided with a stirring blade assembly Component 3, the stirring fan blade assembly 3 includes a motor 31, a reducer 32, a drive shaft 33 and a fan blade 34. The motor 31 and the reducer 32 are installed and fixed at the middle position of the top of the tank cover 12 away from the tank body 11. The drive shaft 33 vertically penetrates the tank cover 12 and is located inside the tank body 11. The fan blade 34 is installed at the lower end of the drive shaft 33 and is also located at the bottom of the internal space of the tank body 11. The motor 31 drives the drive shaft 33 to rotate through the reducer 32, and the drive shaft 33 drives the fan blade 34 to stir the material inside the tank body 11.

[0032] The side wall in the middle of the tank body 11 in the height direction is provided with a cantilevered card plate 4 for fixing the tank body 11. The cantilevered card plate 4 is vertically U-shaped and protrudes outwardly. The bottom opening of the cantilevered card plate 4 can be fixed with the corresponding bracket screws when the bracket is matched.

[0033] In the present embodiment, there are two secondary water injection mixing tanks 2, which are arranged on both sides of the motor 31 and the reducer 32 and are symmetrically arranged. The two secondary water injection mixing tanks 2 can quickly break up the solid waste and inject it into the main tank 1. In other embodiments, the number of secondary water injection mixing tanks 2 can also be other numbers.

[0034] Reference Figure 2 and Figure 3 The secondary water injection mixing tank 2 is installed on the top of the main tank 1, that is, the tank cover 12. In order to install the secondary water injection mixing tank 2, the tank cover 12 is protruding with a first connecting protrusion 13 and a second connecting protrusion 14 that are connected and matched with the secondary water injection mixing tank 2. The tank cover 12 is spherical, and the first connecting protrusion 13 and the second connecting protrusion 14 are inclined upward, and the first connecting protrusion 13 and the second connecting protrusion 14 are radially spaced along the cross-section of the main tank 1. The first connecting protrusion 13 is closer to the axis of the main tank 1. In this embodiment, the first connecting protrusion 13 and the second connecting protrusion 14 are in the same direction. The first connecting protrusion 13 is coaxially provided with an overflow port 131, and the second connecting protrusion 14 is provided with a final injection port 141. The axis of the overflow port 131 is parallel to the axis of the final injection port 141.

[0035] The secondary water injection mixing tank 2 is a column with a playground-shaped cross-section and is hollow inside. An end face of one end of the secondary water injection mixing tank 2 is protrudingly provided with an overflow pipe 21 that cooperates with the first connecting protrusion 13 and a connecting pipe 22 that cooperates with the second connecting protrusion 14. The overflow pipe 21 is fixed to the first connecting protrusion 13 by flange screws, so that the overflow pipe 21 connects the overflow port 131 of the first connecting protrusion 13 and the space inside the secondary water injection mixing tank 2, thereby finally connecting the main tank 1 and the secondary water injection mixing tank 2; the connecting pipe 22 is inserted into the final injection port 141, and a flange is cantilevered on the outer wall of the connecting pipe 22, so that the connecting pipe 22 and the second connecting protrusion 14 are also connected through the flange, and a sealing ring 5 is clamped between the flange of the connecting pipe 22 and the second connecting protrusion 14.

[0036] It should be noted that the sealing ring 5 can also be clamped between the flanges that cooperate with each other between the above-mentioned first connecting protrusion 13 and the overflow pipe 21 to improve the sealing performance. At the same time, the inner wall of the connecting pipe 22 away from the overflow pipe 21 is connected to the inner wall of the secondary water injection mixing tank 2 as the inner wall of the lowest point, so that the solid waste and liquid in the secondary water injection mixing tank 2 can flow into the connecting pipe 22 more smoothly to reduce adhesion.

[0037] At the same time, since the secondary water injection mixing tank 2 is overall tilted and cooperates with the first connecting protrusion 13 and the second connecting protrusion 14 when installed on the tank cover 12, the opening where the inner wall of the secondary water injection mixing tank 2 intersects with the overflow pipe 21 is higher than the inner bottom wall of the secondary water injection mixing tank 2, specifically, the overflow pipe 21 is higher than the connecting pipe 22; and since the first connecting protrusion 13 and the second connecting protrusion 14 are oriented in the same direction, the process of inserting the connecting pipe 22 into the final injection port 141 is also the process of cooperating with the first connecting protrusion 13 and the overflow pipe 21.

[0038] A portion of the end of the secondary water injection mixing tank 2 facing away from the main tank 1 is removed so that the end face of the secondary water injection mixing tank 2 away from the main tank 1 forms two surfaces facing differently, which are respectively set as an injection surface 23 and an operating surface 24, wherein the injection surface 23 is cut into a horizontal shape, and the operating surface 24 remains parallel to the other end face of the secondary water injection mixing tank 2, and the injection surface 23 is provided with a solid waste input port 6 for vertically injecting solid waste into the secondary water injection mixing tank 2. The secondary water injection mixing tank 2 is obliquely provided with an injection pipe 7, and the opening of the injection pipe 7 faces the bottom of the secondary water injection mixing tank 2. Specifically, there are two injection pipes 7, and the two injection pipes 7 are symmetrically arranged on two parallel side walls opposite to each other of the secondary water injection mixing tank 2, and the injection pipe 7 is inclined downward so as to face the inner bottom wall of the secondary water injection mixing tank 2.

[0039] Reference Figure 3 and Figure 4 The secondary water injection mixing tank 2 is provided with an opening and closing plate 8 and an opening and closing assembly for controlling the opening and closing of the opening and closing plate 8. The opening and closing plate 8 is installed in the connecting pipe 22 and slides to close the connecting pipe 22. Specifically: the opening and closing assembly includes an opening and closing rod 91, and the opening and closing rod 91 is rotatably installed on the secondary water injection mixing tank 2. One end of the opening and closing rod 91 is located in the secondary water injection mixing tank 2 and is threadedly rotated to penetrate the opening and closing plate 8. The other end of the opening and closing rod 91 passes through the operating surface 24 and is located outside the secondary water injection mixing tank 2. A circle of annular protrusions 25 are protruded on the outer edge of the operating surface 24 to form an operating space 26. A steering wheel 92 is provided at one end of the opening and closing rod 91 located in the operating space 26, so as to facilitate the rotation of the opening and closing rod 91 During the rotation operation, a sealing cover 93 is screwed onto the annular protrusion 25 for closing the operating space 26, wherein the sealing cover 93 is protrudingly provided with a rubber protrusion 931 and is embedded in the operating space 26; the opening and closing plate 8 is slidably installed inside the connecting pipe 22, and at the same time, a limiting strip 94 is protrudingly provided on the bottom wall inside the secondary water injection mixing tank 2. After the opening and closing plate 8 is moved out of the connecting pipe 22 and enters the secondary water injection mixing tank 2, the limiting strip 94 limits the rotation of the opening and closing plate 8 relative to the secondary water injection mixing tank 2. Specifically, the opening and closing plate 8 and the limiting strip 94 form a rotation restriction by the cooperation of the groove and the protrusion, and at the same time, the opening and closing plate 8 and the inner wall of the connecting pipe 22 form a rotation restriction by the cooperation of the protrusion and the groove.

[0040] In another embodiment, the limiting strip 94 may be protruding from the end surface of the connecting pipe 22 inside the main tank 1, and the opening and closing plate 8 may cooperate with the inner wall of the secondary water injection mixing tank 2 through grooves and protrusions, so that the limiting strip 94 is no longer required.

[0041] The implementation principle of a fast mixing sulfuric acid dilution kettle in the embodiment of the present application is: the solid waste and the water used to dilute the liquid to adjust the reaction environment are first mixed through a separately arranged secondary water injection mixing tank 2, the solid waste is first dispersed and then injected into the main tank 1 together with the waste acid for rapid stirring and mixing, the reaction process is faster, the water injection process is also a process of dispersing the solid waste, compared with the solid waste directly entering the main tank 1, the impact of the liquid is more obvious, and the mixing process is faster and more effective.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fast mixing sulfuric acid dilution kettle, characterized in that: The invention comprises a main tank (1) and a secondary water injection mixing tank (2), wherein the main tank (1) is provided with a stirring blade assembly (3), the secondary water injection mixing tank (2) is installed on the top of the main tank (1), the opening of the secondary water injection mixing tank (2) communicating with the main tank (1) is higher than the inner bottom wall of the secondary water injection mixing tank (2), the top of the secondary water injection mixing tank (2) is provided with a solid waste input port (6), and the secondary water injection mixing tank (2) is provided with a water injection pipe (7) at an angle, and the opening of the water injection pipe (7) is toward the bottom of the secondary water injection mixing tank (2).

2. A fast mixing sulfuric acid dilution kettle according to claim 1, characterized in that: The bottom of the secondary water injection mixing tank (2) is in communication with the main tank (1) and is provided with an opening and closing plate (8) and an opening and closing component for controlling the opening and closing of the opening and closing plate (8).

3. A fast mixing sulfuric acid dilution kettle according to claim 2, characterized in that: The main tank (1) is provided with a final injection port (141), the bottom of the secondary water injection mixing tank (2) is provided with a connecting pipe (22) inserted into the final injection port (141), and the opening and closing plate (8) is installed in the connecting pipe (22) and slides to close the connecting pipe (22).

4. A fast mixing sulfuric acid dilution kettle according to claim 3, characterized in that: A second connecting protrusion (14) is protruding from the bottom of the main tank (1), the final injection port (141) is opened on the second connecting protrusion (14), the second connecting protrusion (14) abuts against the outer wall of the secondary water injection mixing tank (2), and a sealing ring (5) is clamped between the second connecting protrusion (14) and the secondary water injection mixing tank (2).

5. A fast mixing sulfuric acid dilution kettle according to claim 4, characterized in that: The second connection protrusion (14) is flange-connected to the secondary water injection mixing tank (2).

6. A fast mixing sulfuric acid dilution kettle according to claim 1, characterized in that: A first connection protrusion (13) for mounting the secondary water injection mixing tank (2) is provided on the top of the main tank (1), and the first connection protrusion (13) is flange-connected to the secondary water injection mixing tank (2).

7. A fast mixing sulfuric acid dilution kettle according to claim 6, characterized in that: The first connecting protrusion (13) is arranged to be inclined upward.

8. A fast mixing sulfuric acid dilution kettle according to claim 2, characterized in that: The opening and closing assembly comprises an opening and closing rod (91), the opening and closing rod (91) being rotatably mounted on the secondary water injection mixing tank (2), one end of the opening and closing rod (91) being located inside the secondary water injection mixing tank (2) and threadably rotating through the opening and closing plate (8), the other end of the opening and closing rod (91) being located outside the secondary water injection mixing tank (2), and a limiting strip (94) being provided inside the secondary water injection mixing tank (2) for limiting the rotation of the opening and closing plate (8) relative to the secondary water injection mixing tank (2).

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