hydrogen peroxide storage and filtration device

Abstract

This application provides a hydrogen peroxide storage and filtration device, including a storage tank. An inlet pipe is inserted into the top wall of the tank, and the side wall is connected to an outlet pipe. A vertical pipe is fixed in the center of the tank. A motor is installed at the top of the tank, and the motor's shaft passes vertically through the top wall of the tank and is inserted into the center of the vertical pipe. Blades for pushing water upwards are fixed on the shaft. The bottom of the tank is conical and an aerator connected to an air compressor via an air inlet pipe is fixed thereon. A central adsorption filter is located above the vertical pipe, and an exhaust pipe is located at the top of the tank. This hydrogen peroxide storage and filtration device utilizes the internal and external circulation of hydrogen peroxide along the vertical pipe to collect aromatic impurities accumulated at the bottom of the tank towards the central aerator. Simultaneously, bubbles generated by the aerator adsorb and carry the collected aromatic impurities upwards along the vertical pipe with the hydrogen peroxide, causing the aromatic impurities to be intercepted and adhered to the pores of the central adsorption filter, achieving a filtration effect.

Description

Technical Field

[0001] This application relates to a technology for filtering out accumulated aromatics in hydrogen peroxide storage, and more particularly to a hydrogen peroxide storage filtration device. Background Technology

[0002] Hydrogen peroxide is an important green oxidant. In the anthraquinone process for preparing hydrogen peroxide, anthraquinone is used as a carrier and aromatic hydrocarbons are used as solvents to prepare a mixed liquid working solution. Under certain temperature, pressure and palladium catalyst in a fixed bed, hydrogenation and oxidation reactions are carried out to obtain an oxidizing solution, which is then extracted and purified by desalination to obtain hydrogen peroxide.

[0003] The aromatic impurities in hydrogen peroxide mainly originate from the extraction and purification process and are carried into the storage tank. Long-term storage of hydrogen peroxide in these tanks leads to the accumulation of large amounts of aromatic impurities, affecting the total carbon content of the hydrogen peroxide product. Current hydrogen peroxide storage devices cannot effectively adsorb and filter the accumulated aromatic impurities within the tank. Utility Model Content

[0004] This application provides a hydrogen peroxide storage and filtration device to solve the problem that existing hydrogen peroxide storage devices cannot adsorb aromatic impurities in the filter tank.

[0005] This application provides a hydrogen peroxide storage and filtration device, including a storage tank. An inlet pipe is inserted into the top wall of the storage tank, and the side wall is connected to an outlet pipe. A vertical pipe is fixed in the center of the storage tank. A motor is installed on the top of the storage tank. The rotating shaft of the motor passes vertically through the top wall of the storage tank and is inserted into the center of the vertical pipe. A blade for pushing water upward is fixed on the rotating shaft. The bottom of the storage tank is conical and an aerator connected to an air compressor through an air inlet pipe is fixed thereon. A central adsorption filter is provided above the vertical pipe, and an exhaust pipe is provided on the top of the storage tank.

[0006] Optionally, a sleeve is vertically inserted into the center of the central adsorption filter, and the rotating shaft passes vertically through the sleeve and is rotatably connected to it.

[0007] Optionally, the central adsorption filter is made of filter media with a specific gravity less than that of hydrogen peroxide, which can float on the water surface inside the vertical pipe, and the sleeve is slidably connected to the rotating shaft.

[0008] Optionally, the top surface of the central adsorption filter is fixed with a counterweight for pressing its lower part into the water surface, and the bottom surface of the central adsorption filter is an upward-facing concave portion.

[0009] Optionally, the vertical pipe is fitted with an annular adsorption filter whose specific gravity is less than that of hydrogen peroxide, allowing it to float on the water surface.

[0010] The hydrogen peroxide storage and filtration device provided in this application uses a motor to drive a rotating shaft to rotate blades, causing the hydrogen peroxide in the storage tank to rise along a vertical pipe and circulate internally and externally. This causes the aromatic impurities accumulated at the bottom of the storage tank to gather towards the central aerator. Simultaneously, the aerator generates vertically rising bubbles. These bubbles adsorb and carry the gathered aromatic impurities upwards with the hydrogen peroxide along the vertical pipe, overflowing. The overflowing aromatic impurities are intercepted and adhered to the pores of the central adsorption filter, achieving a filtration effect. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a front view of a hydrogen peroxide storage and filtration device provided in an embodiment of this application; Figure 2 A hydrogen peroxide storage and filtration device provided in an embodiment of this application Figure 1 A sectional view; Figure 3 This is a cross-sectional view of the EE section of a hydrogen peroxide storage and filtration device provided in an embodiment of this application.

[0013] Explanation of reference numerals in the attached figures: Storage tank 1; inlet pipe 2; outlet pipe 3; vertical pipe 4; motor 5; rotating shaft 6; blade 7; aerator 8; air inlet pipe 9; central adsorption filter 10; exhaust pipe 11; sleeve 12; counterweight 13; recess 14; annular adsorption filter 15; liquid level window 16. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.

[0015] like Figures 1-3As shown, one embodiment of this application provides a hydrogen peroxide storage and filtration device, including a storage tank 1. An inlet pipe 2 is inserted into the top wall of the storage tank 1, and the side wall is connected to an outlet pipe 3. Valves are provided on both the inlet pipe 2 and the outlet pipe 3. A vertical pipe 4 is fixed in the center of the storage tank 1, with a gap between the lower end of the vertical pipe 4 and the bottom wall of the storage tank 1. A motor 5 is installed at the top of the storage tank 1. A rotating shaft 6 on the motor 5 passes vertically through the top wall of the storage tank 1 and is inserted into the center of the vertical pipe 4. A blade 7 for pushing water upwards is fixed on the rotating shaft 6. The motor 5 drives the rotating shaft 6 to rotate the blade 7, causing the hydrogen peroxide in the vertical pipe 4 to rise and overflow from the top. The bottom of the storage tank 1 is conical and an aerator 8 connected to an air compressor via an air inlet pipe 9 is fixed thereon. The diameter of the aerator 8 is smaller than the diameter of the vertical pipe 4. A central adsorption filter 10 is provided above the vertical pipe 4, and an exhaust pipe 11 is provided at the top of the storage tank 1. A one-way valve for venting exhaust gas is installed on the exhaust pipe 11. The side wall of storage tank 1 is equipped with a liquid level window 16, which allows for a more direct observation of the hydrogen peroxide level.

[0016] During use, the extracted hydrogen peroxide needs to be stored in storage tank 1 through inlet pipe 2. Aromatic impurities introduced into storage tank 1 during hydrogen peroxide preparation accumulate at the bottom of the tank. Regularly starting motor 5 and aerator 8 filters out these aromatic impurities. When motor 5 is started, shaft 6 drives blades 7 to rotate, allowing water to enter from all sides of the bottom of vertical pipe 4. Simultaneously, the hydrogen peroxide in vertical pipe 4 is pushed upwards and overflows from the top, circulating internally and externally within the pipe. Aerator 8 generates vertically rising bubbles during the hydrogen peroxide circulation, which enter vertical pipe 4. These bubbles adsorb and carry aromatic impurities upwards along vertical pipe 4. As the hydrogen peroxide flows through central adsorption filter 10, these impurities are intercepted and adhere to the filter pores. Central adsorption filter 10 is periodically replaced or desorbed.

[0017] In this embodiment, the motor 5 drives the rotating shaft 6 to rotate the blades 7, causing the hydrogen peroxide in the storage tank 1 to rise along the vertical pipe 4 and circulate internally and externally, gathering the aromatic impurities accumulated at the bottom of the storage tank 1 towards the central aerator 8. At the same time, the aerator 8 generates vertically rising bubbles, which adsorb and carry the aromatic impurities gathered above, overflowing upwards along the vertical pipe 4 with the hydrogen peroxide. The overflowing aromatic impurities are intercepted and adhered to the pores of the central adsorption filter 10, achieving a filtration effect.

[0018] In one possible implementation, a sleeve 12 is vertically inserted into the center of the central adsorption filter 10, and the rotating shaft 6 passes vertically through the sleeve 12 and is rotatably connected to it.

[0019] The rotating shaft 6 is rotatably connected to the central adsorption filter 10 via the sleeve 12. The central adsorption filter 10 above the vertical pipe 4 will not affect the rotation of the rotating shaft 6. The central adsorption filter 10 can more stably intercept and filter aromatic impurities.

[0020] In one possible implementation, the central adsorption filter 10 is made of filter material with a specific gravity less than that of hydrogen peroxide, which can float on the water surface inside the vertical pipe 4, and the sleeve 12 is slidably connected to the rotating shaft 6.

[0021] The central adsorption filter 10 can float on the water surface inside the vertical pipe 4. As the water level inside the vertical pipe 4 rises and falls, the aromatic impurities carried to the water surface by the aerator 8 can also be filtered by the central adsorption filter 10.

[0022] In one possible implementation, the top surface of the central adsorption filter 10 is fixed with a counterweight 13 for pressing its lower part into the water surface, and the bottom surface of the central adsorption filter 10 is an upward-facing concave portion 14.

[0023] The bottom of the central adsorption filter 10 is designed as an upward-facing concave portion 14, and the concave portion 14 at the bottom of the central adsorption filter 10 is completely pressed into the water surface by a counterweight 13. The concave portion 14 can effectively increase the cross-section of aromatic impurities during passage, thereby increasing the filtration area and improving the filtration efficiency.

[0024] In one possible implementation, the vertical pipe 4 is fitted with an annular adsorption filter 15, which has a specific gravity less than that of hydrogen peroxide, allowing it to float on the water surface.

[0025] The annular adsorption filter 15 is fitted onto the vertical pipe 4 and floats on the surface of the hydrogen peroxide. The hydrogen peroxide and aromatics overflowing from the vertical pipe 4 can be filtered again through the annular adsorption filter 15, effectively improving the filtration effect and filtration efficiency.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A hydrogen peroxide storage filtering device, comprising a storage tank (1), a top wall of the storage tank (1) being inserted with a liquid inlet pipe (2), and a side wall being communicated with a liquid outlet pipe (3), characterized in that: A vertical pipe (4) is fixed in the center of the storage tank (1). A motor (5) is installed on the top of the storage tank (1). The rotating shaft (6) on the motor (5) passes vertically through the top wall of the storage tank (1) and is inserted into the center of the vertical pipe (4). A blade (7) for pushing water upward is fixed on the rotating shaft (6). The bottom of the storage tank (1) is a conical surface and an aerator (8) connected to an air compressor through an air inlet pipe (9) is fixed thereon. A central adsorption filter (10) is provided above the vertical pipe (4). An exhaust pipe (11) is provided on the top of the storage tank (1).

2. The hydrogen peroxide storage filtration device of claim 1, wherein: A sleeve (12) is vertically inserted into the center of the central adsorption filter (10), and the rotating shaft (6) passes vertically through the sleeve (12) and is rotatably connected to it.

3. The hydrogen peroxide storage filter apparatus of claim 2, wherein: The central adsorption filter (10) is made of filter material with a specific gravity less than that of hydrogen peroxide, which can float on the water surface inside the vertical pipe (4), and the sleeve (12) is slidably connected to the rotating shaft (6).

4. The hydrogen peroxide storage filter apparatus of claim 3, wherein: The top surface of the central adsorption filter (10) is fixed with a counterweight (13) for pressing its lower part into the water surface, and the bottom surface of the central adsorption filter (10) is an upward-facing concave part (14).

5. The hydrogen peroxide storage filter apparatus according to any one of claims 1 to 4, characterized in that: The vertical pipe (4) is fitted with an annular adsorption filter (15) that has a specific gravity less than that of hydrogen peroxide and can float on the water surface.

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