Device for adding hydrogen peroxide into electronic-grade sulfuric acid

Abstract

The utility model relates to the technical field of chemical equipment, and discloses a device for adding hydrogen peroxide into electronic-grade sulfuric acid, which comprises a degassing tower and an electronic-grade sulfuric acid storage tank, a pump frame is fixedly arranged outside the degassing tower, a diaphragm pump is fixedly arranged inside the pump frame, a PFA (Polyfluoroalkoxy) pipeline is fixedly connected inside the diaphragm pump, and the electronic-grade sulfuric acid storage tank is arranged in the PFA pipeline. One end of the diaphragm pump is fixedly connected with a stainless steel lining PFA tee joint, a lining PFA valve is arranged in the stainless steel lining PFA tee joint, and one end of the stainless steel lining PFA tee joint is fixedly connected into the degassing tower. The utility model has the following advantages and effects: by adjusting the liquid adding amount and liquid adding frequency of H2O2 added by the diaphragm pump, the added H2O2 and electronic grade sulfuric acid are fully mixed uniformly in the PFA pipeline, the adjusting time is saved, the productivity is improved, and the use amount of the electronic grade hydrogen peroxide can be reduced to the greatest extent due to the procedure after the degassing tower is additionally arranged.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a device for adding electronic-grade sulfuric acid to hydrogen peroxide. Background Art

[0002] Electronic grade sulfuric acid is added with H2O2 from the storage tank to make the reducing substance content of the product reach 0.0002% or lower. Electronic grade sulfuric acid is added with H2O2 from the acid preparation tank to make the reducing substance content of the product reach 0.0002% or lower.

[0003] However, there are the following three problems in the prior art:

[0004] 1. When adding hydrogen peroxide to electronic grade sulfuric acid, the acid in the entire storage tank needs to be thoroughly circulated by the acid pump as the power to ensure that H2O2 and electronic acid are fully mixed and reacted, thereby reducing the content of reducing substances. If the acid and hydrogen peroxide in the storage tank are not mixed evenly, inaccurate sampling and testing will occur, which will lead to quality accidents;

[0005] Second, since the storage tank and acid pump need a long time to circulate, the production efficiency is reduced and the delivery cycle is increased, which in turn increases the production cost;

[0006] 3. The occurrence of siphoning during the production process will cause product quality to decline and the production process to become unstable, so improvements are needed. Utility Model Content

[0007] The utility model aims to provide a device for adding electronic-grade sulfuric acid to hydrogen peroxide, which has the effects of reducing the occurrence of Hongxi phenomenon, high mixing efficiency and reducing the use amount of hydrogen peroxide.

[0008] The above technical purpose of the utility model is achieved through the following technical solutions: a device for adding electronic-grade sulfuric acid to hydrogen peroxide, comprising a degassing tower and an electronic-grade sulfuric acid storage tank, a pump rack is fixedly installed on the outside of the degassing tower, a diaphragm pump is fixedly installed on the inside of the pump rack, a PFA pipeline is fixedly connected to the inside of the diaphragm pump, one end of the diaphragm pump is fixedly connected to a stainless steel lined PFA tee, a PFA lined valve is arranged on the inside of the stainless steel lined PFA tee, one end of the stainless steel lined PFA tee is fixedly connected to the inside of the degassing tower, the other end of the stainless steel lined PFA tee is fixedly connected to the inside of the electronic-grade sulfuric acid storage tank, and the outside of the degassing tower is fixedly connected to an electronic-grade hydrogen peroxide pipeline.

[0009] By adopting the above technical scheme, electronic-grade hydrogen peroxide enters the interior of the degassing tower through the electronic-grade hydrogen peroxide pipeline, and the electronic-grade hydrogen peroxide pipeline is added from the top of the overflow port of the degassing tower. The electronic-grade hydrogen peroxide pipeline installed on the top of the overflow port eliminates the siphon phenomenon that often occurs in electronic-grade hydrogen peroxide, thereby ensuring the quality of the finished product and the stability of the production process. The electronic-grade hydrogen peroxide is connected to the diaphragm pump through the PFA pipeline, and the outlet of the diaphragm pump is connected to the stainless steel lined PFA tee, and the stainless steel lined PFA tee is provided with a PFA lined valve inside. One end of the stainless steel lined PFA tee is connected to the degassing tower, and the other end is connected to the electronic-grade sulfuric acid storage tank. By adjusting the amount of H2O2 added and the frequency of adding liquid of the diaphragm pump, the added H2O2 and the electronic-grade sulfuric acid are fully mixed in the PFA pipeline, which saves adjustment time and improves productivity. In addition, due to the process after the degassing tower is installed, the use of electronic-grade hydrogen peroxide can be minimized.

[0010] The utility model is further configured as follows: an anti-corrosion layer is fixedly connected to the middle of the electronic-grade sulfuric acid storage tank, tracks are fixedly connected to both sides of the inner wall of the electronic-grade sulfuric acid storage tank, a first spring is fixedly connected to the inner bottom wall of the track, a top block is fixedly connected to the top of the first spring, and a cross plate is overlapped on the top of the top block.

[0011] By adopting the above technical solution, the interior of the electronic-grade sulfuric acid storage tank is partitioned by an anti-corrosion layer, and the electronic-grade sulfuric acid and electronic-grade hydrogen peroxide are stored above the electronic-grade sulfuric acid storage tank. The staff installs the cross plate to the inside of the track, and the cross plate is supported by the top block.

[0012] The utility model is further configured as follows: notches are provided on both sides of the bottom of the horizontal plate, and the top block extends to the inside of the notches.

[0013] By adopting the above technical solution, notches matching the top blocks are opened on both sides of the bottom of the horizontal plate, and the top blocks extend into the inside of the notches, thereby improving the stability of the horizontal plate.

[0014] The utility model is further configured as follows: a second spring is fixedly connected to the bottom of the top block, a connecting rod is fixedly connected to the bottom of the second spring, and a vibrator is fixedly connected to one end of the connecting rod.

[0015] By adopting the above technical solution, the staff starts the vibration machine, so that the vibration machine transmits the exciting force to the first spring, the top block and the cross plate through the second spring and the connecting rod, thereby driving the cross plate to vibrate.

[0016] The utility model is further configured as follows: a column is fixedly connected to the top of the horizontal plate, and a vibration ball head is fixedly connected to the top of the column.

[0017] By adopting the above technical solution, the horizontal plate drives the column and the exciting ball head to generate an exciting force, and the exciting ball head knocks the anti-corrosion layer, thereby preventing the electronic grade sulfuric acid and electronic grade hydrogen peroxide from precipitating during storage.

[0018] The utility model is further configured as follows: the outsides of the electronic-grade hydrogen peroxide pipeline and the PFA pipeline are fixedly connected with clamping rings, the outside of the stainless steel-lined PFA tee is sleeved with a protective sleeve, and the inside of the protective sleeve is provided with a cotton layer.

[0019] By adopting the above technical solution, the clamping ring can fix the electronic-grade hydrogen peroxide pipeline and the PFA pipeline on the outer wall of the degassing tower to prevent the electronic-grade hydrogen peroxide pipeline and the PFA pipeline from shifting. The protective sleeve is sleeved on the outside of the stainless steel lined PFA tee, and the protective sleeve and the stainless steel lined PFA tee are filled with a cotton layer, thereby protecting the outer wall of the stainless steel lined PFA tee.

[0020] The beneficial effects of the utility model are:

[0021] 1. The utility model adjusts the amount of H2O2 added and the frequency of adding H2O2 of the diaphragm pump so that the added H2O2 and electronic grade sulfuric acid are fully mixed in the PFA pipeline, thereby saving adjustment time and improving productivity. In addition, due to the process after the degassing tower is installed, the use of electronic grade hydrogen peroxide can be reduced to the maximum extent.

[0022] 2. In the utility model, electronic-grade hydrogen peroxide enters the interior of the degassing tower through an electronic-grade hydrogen peroxide pipeline, and the electronic-grade hydrogen peroxide pipeline is added from the top of the overflow port of the degassing tower. The electronic-grade hydrogen peroxide pipeline installed on the top of the overflow port eliminates the siphon phenomenon that often occurs in electronic-grade hydrogen peroxide, thereby ensuring the quality of the finished product and the stability of the production process.

[0023] 3. In the utility model, the interior of the electronic-grade sulfuric acid storage tank is partitioned by an anti-corrosion layer, and electronic-grade sulfuric acid and electronic-grade hydrogen peroxide are stored above the electronic-grade sulfuric acid storage tank. The staff installs the cross plate to the inside of the track, and the cross plate is supported by the top block. The staff starts the vibrator, so that the vibrator transmits the exciting force to the first spring, the top block and the cross plate through the second spring and the connecting rod, thereby driving the cross plate to vibrate, and the cross plate drives the column and the exciting ball head to generate an exciting force, and the exciting ball head knocks on the anti-corrosion layer, thereby preventing the electronic-grade sulfuric acid and electronic-grade hydrogen peroxide from precipitating during the storage process.

[0024] 4. In the utility model, the clamping ring can fix the electronic-grade hydrogen peroxide pipeline and the PFA pipeline on the outer wall of the degassing tower to prevent the electronic-grade hydrogen peroxide pipeline and the PFA pipeline from being offset. The protective sleeve is sleeved on the outside of the stainless steel lined PFA tee, and the protective sleeve and the stainless steel lined PFA tee are filled with a cotton layer, thereby protecting the outer wall of the stainless steel lined PFA tee. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a schematic diagram of the structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the internal structure of the electronic grade sulfuric acid storage tank of the utility model;

[0028] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0029] Figure 4 This is a schematic diagram of the internal structure of the protective cover of the utility model.

[0030] In the figure, 1. degassing tower; 2. electronic grade sulfuric acid storage tank; 3. pump rack; 4. diaphragm pump; 5. PFA pipeline; 6. stainless steel lined PFA tee; 7. PFA valve; 8. electronic grade hydrogen peroxide pipeline; 9. anti-corrosion layer; 10. track; 11. first spring; 12. top block; 13. cross plate; 14. second spring; 15. connecting rod; 16. vibrator; 17. column; 18. exciting ball head; 19. clamping ring; 20. protective cover; 21. cotton layer. DETAILED DESCRIPTION

[0031] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1-4A device for adding electronic-grade sulfuric acid to hydrogen peroxide comprises a degassing tower 1 and an electronic-grade sulfuric acid storage tank 2, a pump rack 3 is fixedly installed on the outside of the degassing tower 1, a diaphragm pump 4 is fixedly installed inside the pump rack 3, a PFA pipe 5 is fixedly connected inside the diaphragm pump 4, one end of the diaphragm pump 4 is fixedly connected to a stainless steel lined PFA tee 6, a PFA lined valve 7 is arranged inside the stainless steel lined PFA tee 6, one end of the stainless steel lined PFA tee 6 is fixedly connected to the inside of the degassing tower 1, and the other end of the stainless steel lined PFA tee 6 is fixedly connected to the inside of the electronic-grade sulfuric acid storage tank 2, an electronic-grade hydrogen peroxide pipe 8 is fixedly connected to the outside of the degassing tower 1, and the electronic-grade hydrogen peroxide enters the inside of the degassing tower 1 through the electronic-grade hydrogen peroxide pipe 8, and the electronic-grade hydrogen peroxide pipe The electronic grade hydrogen peroxide pipeline 8 is added from the top of the overflow port of the degassing tower 1. The electronic grade hydrogen peroxide pipeline 8 installed on the top of the overflow port eliminates the siphon phenomenon that often occurs in electronic grade hydrogen peroxide, thereby ensuring the quality of the finished product and the stability of the production process. The electronic grade hydrogen peroxide is connected to the diaphragm pump 4 by the PFA pipeline 5. The outlet of the diaphragm pump 4 is connected to the stainless steel lined PFA tee 6. The stainless steel lined PFA tee 6 is provided with a PFA lined valve. One end of the stainless steel lined PFA tee 6 is connected to the degassing tower, and the other end is connected to the electronic grade sulfuric acid storage tank. By adjusting the amount of H2O2 added and the frequency of adding H2O2 of the diaphragm pump 4, the added H2O2 and the electronic grade sulfuric acid are fully mixed in the PFA pipeline 5, which saves adjustment time and improves productivity. In addition, due to the process after the degassing tower is installed, The usage of electronic-grade hydrogen peroxide can be reduced to the greatest extent. The middle part of the electronic-grade sulfuric acid storage tank 2 is fixedly connected with an anti-corrosion layer 9, and both sides of the inner wall of the electronic-grade sulfuric acid storage tank 2 are fixedly connected with a track 10. The inner bottom wall of the track 10 is fixedly connected with a first spring 11, and the top of the first spring 11 is fixedly connected with a top block 12. The top of the top block 12 is overlapped with a cross plate 13. The interior of the electronic-grade sulfuric acid storage tank 2 is spaced by the anti-corrosion layer 9. Electronic-grade sulfuric acid and electronic-grade hydrogen peroxide are stored above the electronic-grade sulfuric acid storage tank 2. The staff installs the cross plate 13 to the interior of the track 10, and the cross plate 13 is supported by the top block 12. Notches are provided on both sides of the bottom of the cross plate 13. The top block 12 extends to the inside of the notch. The bottom of the cross plate 13 is opened on both sides. A notch is provided to match the top block 12, and the top block 12 extends to the inside of the notch, thereby improving the stability of the cross plate 13. The bottom of the top block 12 is fixedly connected to a second spring 14, and the bottom of the second spring 14 is fixedly connected to a connecting rod 15, and one end of the connecting rod 15 is fixedly connected to a vibrator 16. The staff starts the vibrator 16, so that the vibrator 16 transmits the exciting force to the first spring 11, the top block 12 and the cross plate 13 through the second spring 14 and the connecting rod 15, thereby driving the cross plate 13 to vibrate, and the top of the cross plate 13 is fixedly connected to a column 17, and the top of the column 17 is fixedly connected to an exciting ball head 18, and the cross plate 13 drives the column 17 and the exciting ball head 18 to generate an exciting force, and the exciting ball head 18 knocks on the anti-corrosion layer 9.Thus, the electronic-grade sulfuric acid and electronic-grade hydrogen peroxide can be prevented from precipitating during storage. The electronic-grade hydrogen peroxide pipeline 8 and the PFA pipeline 5 are fixedly connected with a clamping ring 19 on the outside. The stainless steel-lined PFA tee 6 is sleeved with a protective sleeve 20 on the outside. The protective sleeve 20 is provided with a cotton layer 21 inside. The clamping ring 19 can fix the electronic-grade hydrogen peroxide pipeline 8 and the PFA pipeline 5 on the outer wall of the degassing tower 1 to prevent the electronic-grade hydrogen peroxide pipeline 8 and the PFA pipeline 5 from deflecting. The protective sleeve 20 is sleeved on the outside of the stainless steel-lined PFA tee 6, and the protective sleeve 20 and the stainless steel-lined PFA tee 6 are filled with a cotton layer 21, thereby protecting the outer wall of the stainless steel-lined PFA tee 6.

[0033] In the utility model, the amount of H2O2 added and the frequency of adding H2O2 of the diaphragm pump 4 are adjusted so that the added H2O2 and the electronic-grade sulfuric acid are fully mixed in the PFA pipe 5, thereby saving adjustment time and improving productivity. In addition, due to the process after the degassing tower is installed, the use of electronic-grade hydrogen peroxide can be reduced to the maximum extent. The electronic-grade hydrogen peroxide enters the interior of the degassing tower 1 through the electronic-grade hydrogen peroxide pipe 8, and the electronic-grade hydrogen peroxide pipe 8 is added from the top of the overflow port of the degassing tower 1. The electronic-grade hydrogen peroxide pipe 8 installed on the top of the overflow port eliminates the siphon phenomenon that often occurs with electronic-grade hydrogen peroxide, thereby ensuring the quality of the finished product and the stability of the production process. The interior of the electronic-grade sulfuric acid storage tank 2 is partitioned by the anti-corrosion layer 9, and the electronic-grade sulfuric acid and electronic-grade hydrogen peroxide are stored above the electronic-grade sulfuric acid storage tank 2. The staff installs the cross plate 13 to the interior of the track 10. The cross plate 13 passes through the track 10. The top block 12 is supported, and the staff starts the vibrator 16, so that the vibrator 16 transmits the exciting force to the first spring 11, the top block 12 and the cross plate 13 through the second spring 14 and the connecting rod 15, thereby driving the cross plate 13 to vibrate, and the cross plate 13 drives the column 17 and the exciting ball head 18 to generate exciting force, and the exciting ball head 18 knocks on the anti-corrosion layer 9, thereby preventing the electronic grade sulfuric acid and electronic grade hydrogen peroxide from precipitating during storage. The clamping ring 19 can fix the electronic grade hydrogen peroxide pipeline 8 and the PFA pipeline 5 on the outer wall of the degassing tower 1 to prevent the electronic grade hydrogen peroxide pipeline 8 and the PFA pipeline 5 from shifting. The protective sleeve 20 is sleeved on the outside of the stainless steel lined PFA tee 6, and the protective sleeve 20 and the stainless steel lined PFA tee 6 are filled with a cotton layer 21, thereby protecting the outer wall of the stainless steel lined PFA tee 6.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for adding electronic grade sulfuric acid to hydrogen peroxide, comprising a degassing tower (1) and an electronic grade sulfuric acid storage tank (2), characterized in that: A pump frame (3) is fixedly mounted on the outside of the degassing tower (1), a diaphragm pump (4) is fixedly mounted on the inside of the pump frame (3), a PFA pipeline (5) is fixedly connected to the inside of the diaphragm pump (4), one end of the diaphragm pump (4) is fixedly connected to a stainless steel lined PFA tee (6), a PFA lined valve (7) is arranged inside the stainless steel lined PFA tee (6), one end of the stainless steel lined PFA tee (6) is fixedly connected to the inside of the degassing tower (1), the other end of the stainless steel lined PFA tee (6) is fixedly connected to the inside of the electronic grade sulfuric acid storage tank (2), and an electronic grade hydrogen peroxide pipeline (8) is fixedly connected to the outside of the degassing tower (1).

2. A device for adding electronic grade sulfuric acid to hydrogen peroxide according to claim 1, characterized in that: The middle part of the electronic-grade sulfuric acid storage tank (2) is fixedly connected with an anti-corrosion layer (9), both sides of the inner wall of the electronic-grade sulfuric acid storage tank (2) are fixedly connected with tracks (10), the inner bottom wall of the track (10) is fixedly connected with a first spring (11), the top of the first spring (11) is fixedly connected with a top block (12), and the top of the top block (12) is overlapped with a horizontal plate (13).

3. A device for adding electronic grade sulfuric acid to hydrogen peroxide according to claim 2, characterized in that: Both sides of the bottom of the transverse plate (13) are provided with notches, and the top block (12) extends to the inside of the notches.

4. A device for adding electronic grade sulfuric acid to hydrogen peroxide according to claim 2, characterized in that: The bottom of the top block (12) is fixedly connected to a second spring (14), the bottom of the second spring (14) is fixedly connected to a connecting rod (15), and one end of the connecting rod (15) is fixedly connected to a vibrator (16).

5. A device for adding electronic grade sulfuric acid to hydrogen peroxide according to claim 2, characterized in that: The top of the horizontal plate (13) is fixedly connected to a column (17), and the top of the column (17) is fixedly connected to an exciting ball head (18).

6. The device for adding electronic grade sulfuric acid to hydrogen peroxide according to claim 1, characterized in that: The outside of the electronic-grade hydrogen peroxide pipeline (8) and the PFA pipeline (5) are both fixedly connected with a clamping ring (19), the outside of the stainless steel-lined PFA tee (6) is sleeved with a protective sleeve (20), and the inside of the protective sleeve (20) is provided with a cotton layer (21).

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