Working solution preparation device for hydrogen peroxide production

Abstract

The utility model provides a working solution preparation device for hydrogen peroxide production, which comprises a tank body, a stirrer is arranged in the tank body, a discharge pipe is arranged at the lower end of the tank body, a first material pipe and a second material pipe which are used for feeding are arranged at the upper end of the tank body, a premixing box is fixed at the upper end in the tank body, and a filter screen is arranged at the bottom of the premixing box. The lower ends of the first material pipe and the second material pipe are communicated with two ends of the side wall of the premixing box, and the upper ends of the first material pipe and the second material pipe are respectively communicated with the bottom of a high-level tank for containing heavy aromatics and trioctyl phosphate. According to the working solution preparation device for hydrogen peroxide production, heavy aromatics, trioctyl phosphate and other solvents for preparing the working solution automatically flow into the premixing box through the first material pipe and the second material pipe. And the solvents entering the premixing box impact each other to be premixed, are filtered by the filter screen, downwards flow into the tank body, and are further stirred by the stirrer. Impurities such as aluminum powder, catalyst powder and dust in the solvent body are left at the upper end of the filter screen after being filtered out.

Description

Technical Field

[0001] This application relates to the working fluid configuration and mixing technology for hydrogen peroxide production, and particularly to a working fluid configuration device for hydrogen peroxide production. Background Art

[0002] The production of hydrogen peroxide by the anthraquinone method requires the preparation of a solvent-based working fluid. The commonly used solvent-based working fluid is mixed according to the component ratio of heavy aromatic hydrocarbons, trioctyl phosphate, tetrabutylurea, etc.

[0003] The existing configuration device quantitatively adds each solvent into the tank body, and then stirs and mixes the solvents through a stirrer for configuration. The existing configuration device cannot premix the quantitatively added solvents, resulting in a long working fluid configuration time and low efficiency. At the same time, the existing configuration device cannot filter the solvents when they enter the tank body, and impurities such as aluminum powder, catalyst powder, and dust doped in the solvents are likely to cause danger after entering the tank body. Utility Model Content

[0004] This application provides a working fluid configuration device for hydrogen peroxide production to solve the problem that the existing configuration device cannot premix and filter the solvents.

[0005] This application provides a working fluid configuration device for hydrogen peroxide production, including a tank body. A stirrer is arranged inside the tank body. A discharge pipe is arranged at the lower end of the tank body, and a first feed pipe and a second feed pipe for feeding are arranged at the upper end. A premixing tank is fixed at the upper end inside the tank body. The bottom of the premixing tank is a filter screen. The lower ends of the first feed pipe and the second feed pipe are communicated with both ends of the side wall of the premixing tank, and the upper ends are respectively communicated with the bottoms of the high-level tanks containing heavy aromatic hydrocarbons and trioctyl phosphate.

[0006] Optionally, the end of the rotating shaft of the stirrer vertically extends into the premixing tank and is rotatably connected, and a stirring rod is fixed at its end.

[0007] Optionally, a diaphragm is horizontally fixed inside the premixing tank above the pipe orifices of the first feed pipe and the second feed pipe. A driving mechanism for reciprocally agitating the diaphragm is installed at the upper end of the premixing tank. One-way valves for feeding into the premixing tank are installed on the first feed pipe and the second feed pipe.

[0008] Optionally, the driving mechanism includes a reciprocating plunger, and the diaphragm is agitated by mechanical transmission, hydraulic transmission, or pneumatic transmission.

[0009] Optionally, the premixing tank is cylindrical, and the first feed pipe and the second feed pipe are inserted into the premixing tank from both side walls along the tangential direction.

[0010] Compared with the prior art, the beneficial effects of the working fluid configuration device for hydrogen peroxide production provided by this application are:

[0011] Solvents such as heavy aromatic hydrocarbons and trioctyl phosphate used for configuring the working fluid are temporarily stored in a high-level tank, and then flow into the premixing tank by themselves through the first feed pipe and the second feed pipe. The solvents entering the premixing tank impact each other for premixing, and after being filtered by a filter screen, flow downward into the tank body and are further stirred by a stirrer. Impurities such as aluminum powder, catalyst powder, and dust in the solvents are filtered out and remain at the upper end of the filter screen. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0013] Figure 1 It is a schematic structural diagram of a working fluid configuration device for hydrogen peroxide production provided by an embodiment of the present application;

[0014] Figure 2 It is a schematic diagram of the diaphragm position of a working fluid configuration device for hydrogen peroxide production provided by an embodiment of the present application;

[0015] Figure 3 It is a working fluid configuration device for hydrogen peroxide production provided by an embodiment of the present application Figure 2 A cross-sectional view from above;

[0016] Figure 4 It is a schematic diagram of the first feed pipe and the second feed pipe being inserted tangentially into a working fluid configuration device for hydrogen peroxide production provided by an embodiment of the present application;

[0017] Figure 5 It is a working fluid configuration device for hydrogen peroxide production provided by an embodiment of the present application Figure 4 A cross-sectional view from above.

[0018] Description of the Reference Numerals:

[0019] Tank body 1; Stirrer 2; Discharge pipe 3; First feed pipe 4; Second feed pipe 5; Premixing tank 6; Filter screen 7; Diaphragm 8; Driving mechanism 9; Check valve 10; Stirring rod 11. Detailed Embodiments

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following clearly and completely describes the technical solutions in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts also belong to the scope of protection of this application.

[0021] As Figures 1-5 shown, an embodiment of this application provides a working fluid configuration device for hydrogen peroxide production, including a tank body 1. A stirrer 2 is arranged inside the tank body 1. A discharge pipe 3 is arranged at the lower end of the tank body 1, and a first material pipe 4 and a second material pipe 5 for feeding are arranged at the upper end. A premixing tank 6 is fixed at the upper end inside the tank body 1. The bottom of the premixing tank 6 is a filter screen 7. The lower ends of the first material pipe 4 and the second material pipe 5 are communicated with both ends of the side wall of the premixing tank 6, and the upper ends are respectively communicated with the bottoms of high-level tanks containing heavy aromatic hydrocarbons and trioctyl phosphate.

[0022] During use, the working fluid for hydrogen peroxide production is configured and mixed inside the tank body 1. Solvent bodies such as heavy aromatic hydrocarbons and trioctyl phosphate for configuring the working fluid are respectively stored in high-level tanks for transfer and are communicated with the high-level tanks through the first material pipe 4 and the second material pipe 5. A liquid quantitative flow meter is installed at the discharge port of the high-level tank to control the components. Start the equipment and open the valve to make the solvent body flow into the premixing tank 6 through the first material pipe 4 and the second material pipe 5. Different solvent bodies entering from both sides impact and premix with each other in the premixing tank 6, and then filter impurities such as aluminum powder, catalyst powder, and dust through the filter screen 7, pass through the filter screen 7 and flow downward into the tank body 1, and are further stirred and mixed by the stirrer 2, and finally discharged through the discharge pipe 3.

[0023] In this embodiment, solvent bodies such as heavy aromatic hydrocarbons and trioctyl phosphate for configuring the working fluid are temporarily stored in the high-level tank, and then flow into the premixing tank 6 by themselves through the first material pipe 4 and the second material pipe 5. The solvent bodies entering the premixing tank 6 impact and premix with each other, and flow downward into the tank body 1 after being filtered by the filter screen 7, and are further stirred by the stirrer 2. Impurities such as aluminum powder, catalyst powder, and dust in the solvent body are filtered out and remain at the upper end of the filter screen 7.

[0024] In a possible implementation manner, the end of the rotating shaft of the stirrer 2 vertically extends into the premixing tank 6 and is rotatably connected, and a stirring rod 11 is fixed at its end.

[0025] The rotating shaft extending into the premixing tank 6 can further stir and mix the premixed solvent body in the premixing tank 6 through the stirring rod 11, improving the premixing effect.

[0026] In a possible implementation, a diaphragm 8 is horizontally fixed inside the premixing tank 6 above the nozzles of the first material pipe 4 and the second material pipe 5. A driving mechanism 9 for reciprocatingly agitating the diaphragm 8 is installed at the upper end of the premixing tank 6. One-way valves 10 for feeding materials into the premixing tank 6 are installed on the first material pipe 4 and the second material pipe 5.

[0027] The driving mechanism 9 can agitate the diaphragm 8 to reciprocate, and the one-way valves 10 can prevent the solvent body from flowing back into the first material pipe 4 and the second material pipe 5. When the diaphragm 8 bulges upward, the space inside the premixing tank 6 becomes larger, and a large amount of solvent body flows into the premixing tank 6 through the first material pipe 4 and the second material pipe 5. When the diaphragm 8 agitates downward, the solvent body in the premixing tank 6 is squeezed downward, so that the solvent body quickly passes through the filter screen 7 and is discharged downward.

[0028] In a possible implementation, the driving mechanism 9 includes a reciprocating plunger, and the diaphragm 8 is agitated by means of mechanical transmission, hydraulic transmission or pneumatic transmission.

[0029] The driving mechanism 9 includes a reciprocating plunger. The plunger is driven to reciprocate by a telescopic push rod, and then the plunger drives the diaphragm 8 to reciprocate and agitate by means of mechanical transmission, hydraulic transmission or pneumatic transmission.

[0030] In a possible implementation, the premixing tank 6 is cylindrical, and the first material pipe 4 and the second material pipe 5 are inserted into the premixing tank 6 along the tangential direction from the two side walls of the premixing tank 6.

[0031] Guided by the first material pipe 4 and the second material pipe 5, the solvent body enters the premixing tank 6 along the tangential direction. After that, the solvent body can form a swirling flow by impacting each other inside the premixing tank 6, which can effectively improve the mixing effect of the solvent body inside the premixing tank 6.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A working liquid preparation device for hydrogen peroxide production, comprising a tank body (1), wherein a stirrer (2) is arranged in the tank body (1), a discharge pipe (3) is arranged at the lower end of the tank body (1), and a first material pipe (4) and a second material pipe (5) for feeding are arranged at the upper end of the tank body (1), characterized in that: A premixing box (6) is fixed at the upper end of the tank body (1), and a filter screen (7) is provided at the bottom of the premixing box (6). The lower ends of the first material pipe (4) and the second material pipe (5) are connected to the two ends of the side wall of the premixing box (6), and the upper ends are respectively connected to the bottom of a high-position tank for holding heavy aromatic hydrocarbons and trioctyl phosphate.

2. The working liquid configuration device for hydrogen peroxide production according to claim 1, characterized in that: The end of the rotating shaft of the stirrer (2) extends vertically into the premixing box (6) for rotational connection, and a stirring rod (11) is fixed at the end thereof.

3. The working liquid configuration device for hydrogen peroxide production according to claim 1, characterized in that: A diaphragm (8) is horizontally fixed in the premixing box (6) and is arranged above the pipe openings of the first material pipe (4) and the second material pipe (5). A driving mechanism (9) for reciprocatingly agitating the diaphragm (8) is installed at the upper end of the premixing box (6). A one-way valve (10) for feeding material into the premixing box (6) is installed on the first material pipe (4) and the second material pipe (5).

4. The working liquid configuration device for hydrogen peroxide production according to claim 3, characterized in that: The driving mechanism (9) comprises a reciprocating plunger, which agitates the diaphragm (8) by mechanical transmission, hydraulic transmission or pneumatic transmission.

5. The working liquid configuration device for hydrogen peroxide production according to any one of claims 1 to 4, characterized in that: The premixing box (6) is cylindrical, and the first material pipe (4) and the second material pipe (5) are inserted from the two side walls of the premixing box (6) along the tangential direction.

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