Alkali steam treatment device of filter press for aluminum oxide

Abstract

The utility model discloses an alkali steam treatment device of a filter press for aluminum oxide, which belongs to the technical field of alkali steam treatment and comprises a gas collection component, a steam tank and an acid-alkali treatment box, the gas collection component is connected onto a water return tank of the filter press, the steam tank is connected above the gas collection component and communicated with the acid-alkali treatment box through an exhaust fan, and the acid-alkali treatment box is communicated with the acid-alkali treatment box through the exhaust fan. And an acid-base detection assembly and an acid neutralization pump are arranged on the acid-base treatment box. The alkali steam treatment device disclosed by the utility model has the beneficial effects that the alkali steam treatment device is arranged on the filter press, alkali steam can be automatically collected into the steam tank through the gas collection assembly, then the alkali steam can be neutralized in the acid-alkali treatment box, and the alkali steam can be discharged after the pH value is stable and reaches the standard, so that the treatment effect of the alkali steam is further improved, and meanwhile, the alkali steam treatment effect is improved. And an acid-base detection assembly is arranged in the acid-base treatment box and can help a worker check the acid-base neutralization condition under the cooperation of a PH value detector and an acid-base indicator lamp, so that the practicability and convenience of the device are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of alkali steam treatment, and particularly relates to an alkali steam treatment device for a filter press used in alumina production. Background Art

[0002] With the gradual improvement of the alumina process, filter presses are increasingly widely used in the alumina production process. During operation, due to the high temperature and high alkali content in the filter material, the filtrate temperature is high after solid-liquid separation, generating a large amount of steam with a high alkali content, which causes corrosion of the workshop, damage to equipment, and a strong alkali smell in the air, resulting in a poor working environment for workers. Therefore, it is necessary to treat the alkali steam.

[0003] In the prior art, the alkali steam treatment device for a filter press used in alumina production is not convenient for efficiently and automatically collecting and treating alkali steam, and the sealing effect and durability of itself and the conveying pipeline are not high, lacking a safety monitoring structure, and its practicability needs to be improved. At the same time, for example, the utility model patent with the publication number of CN219764922U discloses an alkali steam collection device, including a liquid collection tank, a water distributor passing through the side wall of the liquid collection tank and extending into the liquid collection tank, and an alkali steam pipeline. The water distributor is arranged above the alkali steam pipeline; a plurality of spray nozzles are evenly arranged on the water distributor; a plurality of discharge ports are evenly arranged on the alkali steam pipeline. It is not convenient for efficiently and automatically collecting and treating alkali steam, lacking a safety monitoring structure, and its practicability needs to be improved. Summary of the Utility Model

[0004] In order to overcome the problems in the prior art that the alkali steam treatment device for a filter press used in alumina production is not convenient for efficiently and automatically collecting and treating alkali steam, the sealing effect and durability of itself and the conveying pipeline are not high, lacking a safety monitoring structure, and its practicability needs to be improved, etc., the utility model provides an alkali steam treatment device for a filter press used in alumina production, including a gas collection component, a steam tank, and an acid-base treatment tank. The gas collection component is connected to the water return tank of the filter press. A steam tank is connected above the gas collection component. The steam tank is communicated with the acid-base treatment tank through an air extraction fan. An acid-base detection component and an acid neutralization pump are arranged on the acid-base treatment tank. The acid-base detection component includes an acid-base indicator light and a pH value detector. The pH value detector is arranged on the inner wall of the acid-base treatment tank. The acid-base indicator light is installed on the top of the acid-base treatment tank. The side wall of the acid-base treatment tank is connected with an acid neutralization pump through a conveying pipe.

[0005] Install the alkali vapor treatment device on the filter press. The alkali vapor can be automatically collected into the steam tank through the gas collection component. After that, the alkali vapor can be neutralized in the acid-base treatment tank. After the pH value is stable and meets the standard, it can be discharged through the exhaust pipe, which further improves the treatment effect of the alkali vapor. At the same time, an acid-base detection component is set in the acid-base treatment tank, which can help the staff check the acid-base neutralization situation with the cooperation of the pH detector and the acid-base indicator light, thus greatly improving the practicability and convenience of the device.

[0006] Preferably, the gas collection component includes a gas collection hood, a gas collection pipe, a gas collection fan and an alkali vapor concentration detector. The gas collection hood is installed directly above the water return tank. The two sides of the top of the gas collection hood are respectively connected to the steam tank through two gas collection pipes. The middle parts of the two gas collection pipes are respectively installed with gas collection fans. The alkali vapor concentration detector is installed on the inner wall of the gas collection hood, and the alkali vapor concentration detector is electrically connected to the two gas collection fans.

[0007] Preferably, a filter screen is provided at the connection between the gas collection pipe and the gas collection hood.

[0008] Preferably, a pressure detection component is installed on the steam tank. The pressure detection component includes an alarm and a pressure detector. The pressure detector is installed on the inner wall of the steam tank and its detection end is connected to the inside of the steam tank. The alarm is installed on the top of the alarm and is electrically connected to the pressure detector.

[0009] Through the pressure detection component set in the steam tank, the internal air pressure of the steam tank can be monitored under the action of the pressure detector to avoid accidents caused by abnormal pressure. Through the gas collection hood set on the water return tank of the filter press, the alkali vapor can be collected. When the alkali vapor concentration detector detects that the concentration of the alkali vapor is too high, the alkali vapor can be collected through the gas collection fan for subsequent treatment.

[0010] Preferably, the acid-base indicator light is electrically connected to the pH detector. A display is installed in the middle of the front of the acid-base treatment tank, and the display is electrically connected to the pH detector.

[0011] Preferably, an exhaust pipe is connected to the top of one side of the acid-base treatment tank, and an exhaust valve is provided on the exhaust pipe.

[0012] Preferably, the output end of the acid neutralization pump is connected to the acid-base treatment tank through a delivery pipe. The input end of the acid neutralization pump is externally connected to a neutralizing acid source. One side of the bottom of the acid-base treatment tank is connected to a sewage discharge pipe, and a sewage discharge valve is provided on the sewage discharge pipe.

[0013] Preferably, a reinforcing plate is installed on the outer wall of the acid-base treatment tank, and a corrosion-resistant layer is installed on the inner wall of the acid-base treatment tank.

[0014] By providing a reinforcing plate outside the acid-base treatment tank, the external strength of the acid-base treatment tank can be enhanced, making it less prone to damage. Meanwhile, an anti-corrosion coating is provided on the inner wall of the acid-base treatment tank, which can improve the acid-base corrosion resistance performance, thereby extending the service life.

[0015] Preferably, the inner walls of the gas collection hood and the gas collection pipe are provided with anti-corrosion coatings, and the acid-base treatment tank and the steam tank are made of stainless steel.

[0016] Preferably, the input end and the output end of the air extraction fan are respectively connected to the steam tank and the acid-base treatment tank, and a discharge flowmeter is provided on the exhaust pipe.

[0017] Through the discharge flowmeter, it is convenient to monitor the amount of alkali steam treated, facilitating the staff to view and manage.

[0018] Beneficial effects:

[0019] The beneficial effects produced by adopting the technical solution of the present utility model are as follows:

[0020] (1) By installing the alkali steam treatment device on the filter press, the alkali steam can be automatically collected into the steam tank through the gas collection component. After that, the alkali steam can be neutralized in the acid-base treatment tank. After the pH value is stable and up to standard, it can be discharged, further improving the treatment effect of the alkali steam. Meanwhile, an acid-base detection component is provided in the acid-base treatment tank, which can help the staff view the acid-base neutralization situation under the cooperation of the pH detector and the acid-base indicator light, thus greatly improving the practicability and convenience of the device.

[0021] (2) Through the pressure detection component provided in the steam tank, the internal air pressure of the steam tank can be monitored under the action of the pressure detector to avoid accidents caused by abnormal pressure. By providing a gas collection hood on the water return tank of the filter press, the alkali steam can be collected. When the alkali steam concentration detector detects that the concentration of the alkali steam is too high, the alkali steam can be collected through the gas collection fan for subsequent treatment.

[0022] (3) By providing a reinforcing plate outside the acid-base treatment tank, the external strength of the acid-base treatment tank can be enhanced, making it less prone to damage. Meanwhile, an anti-corrosion coating is provided on the inner wall of the acid-base treatment tank, which can improve the acid-base corrosion resistance performance, thereby extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a schematic diagram of the overall structure of the alkali steam treatment device for the filter press used in alumina of the present utility model;

[0025] Figure 2 It is a schematic diagram of the internal connection structure of the alkali steam treatment device for the filter press used in alumina of the present utility model;

[0026] Figure 3 It is a schematic diagram of the connection structure of the gas collection hood on the alkali steam treatment device for the filter press used in alumina of the present utility model;

[0027] Figure 4 It is a schematic diagram of the internal structure of the treatment box on the alkali steam treatment device for the filter press used in alumina of the present utility model.

[0028] In the figure: 1. Filter press; 2. Water return tank; 3. Gas collection hood; 4. Gas collection pipe; 5. Gas collection fan; 6. Steam tank; 7. Exhaust fan; 8. Acid-base treatment box; 9. Delivery pipe; 10. Acid neutralization pump; 11. Exhaust pipe; 12. Exhaust valve; 13. Acid-base indicator light; 14. Display; 15. Drain pipe; 16. Alkali steam concentration detector; 17. PH value detector; 18. Reinforcing plate; 19. Corrosion-resistant layer; 20. Alarm; 21. Pressure detector; 22. Discharge flowmeter. Specific embodiments

[0029] To make the purposes, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] In this embodiment, by installing the alkali steam treatment device on the filter press, the alkali steam can be automatically collected into the steam tank through the gas collection component. After that, the alkali steam can be neutralized in the acid-base treatment box. After the PH value is stable and up to standard, it can be discharged through the exhaust pipe, further improving the treatment effect of the alkali steam. At the same time, an acid-base detection component is arranged in the acid-base treatment box, which can help the staff check the acid-base neutralization situation under the cooperation of the PH value detector and the acid-base indicator light, thus greatly improving the practicability and convenience of the device. The specific embodiments are as follows:

[0031] Such as Figures 1 to 4As shown in the figure, an alkali steam treatment device for a filter press for alumina includes a gas collection assembly, a steam tank 6, and an acid-base treatment tank 8. The gas collection assembly is connected to the water return tank 2 of the filter press 1. Above the gas collection assembly is connected a steam tank 6. The steam tank 6 is communicated with the acid-base treatment tank 8 through an air extraction fan 7. An acid-base detection assembly and an acid neutralization pump 10 are provided on the acid-base treatment tank 8. The acid-base detection assembly includes an acid-base indicator light 13 and a pH detector 17. The pH detector 17 is arranged on the inner wall of the acid-base treatment tank 8. The acid-base indicator light 13 is installed on the top of the acid-base treatment tank 8. The side wall of the acid-base treatment tank 8 is connected with an acid neutralization pump 10 through a delivery pipe 9. By installing the alkali steam treatment device on the filter press 1, alkali steam can be automatically collected into the steam tank 6 through the gas collection assembly. After that, the alkali steam can be neutralized in the acid-base treatment tank 8. After the pH value is stable and up to standard, it can be discharged through the exhaust pipe 11, which further improves the treatment effect of the alkali steam. At the same time, an acid-base detection assembly is arranged in the acid-base treatment tank 8, which can help the staff check the acid-base neutralization situation under the cooperation of the pH detector 17 and the acid-base indicator light 13, thus greatly improving the practicability and convenience of the device.

[0032] The gas collection assembly includes a gas collection hood 3, a gas collection pipe 4, a gas collection fan 5, and an alkali steam concentration detector 16. Above the water return tank 2 is installed a gas collection hood 3. The two sides of the top of the gas collection hood 3 are respectively connected to the steam tank 6 through two gas collection pipes 4. In the middle of the two gas collection pipes 4 are respectively installed gas collection fans 5. The alkali steam concentration detector 16 is installed on the inner wall of the gas collection hood 3. The alkali steam concentration detector 16 is electrically connected to the two gas collection fans 5. Through the gas collection hood 3 arranged on the water return tank 2 of the filter press 1, alkali steam can be collected. When the alkali steam concentration detector 16 detects that the concentration of alkali steam is too high, the alkali steam can be collected through the gas collection fan 5 and transported to the steam tank 6 through the gas collection pipe 4 for subsequent treatment.

[0033] A filter screen is provided at the connection between the gas collection pipe 4 and the gas collection hood 3. Through the setting of the filter screen, larger impurities can be avoided from entering the gas collection pipe 4 and blockage can be avoided.

[0034] A pressure detection assembly is installed on the steam tank 6. The pressure detection assembly includes an alarm 20 and a pressure detector 21. The pressure detector 21 is installed on the inner wall of the steam tank 6 and its detection end is connected to the inside of the steam tank 6. The alarm 20 is installed on the top of the alarm 20 and is electrically connected to the pressure detector 21. Through the pressure detection assembly arranged in the steam tank 6, the internal air pressure of the steam tank 6 can be monitored under the action of the pressure detector 21. In case of abnormality, an alarm can be issued through the alarm 20 to avoid accidental accidents caused by abnormal pressure.

[0035] The acid-base indicator lamp 13 is electrically connected to the pH detector 17. In the middle of the front of the acid-base treatment tank 8, a display 14 is installed, and the display 14 is electrically connected to the pH detector 17. Through the display 14, the pH detection situation of the interior of the acid-base treatment tank 8 by the pH detector 17 can be displayed.

[0036] At the top of one side of the acid-base treatment tank 8, an exhaust pipe 11 is connected, and an exhaust valve 12 is provided on the exhaust pipe 11. Through the exhaust valve 12, the discharged neutralized steam can be controlled.

[0037] The output end of the acid neutralization pump 10 is connected to the acid-base treatment tank 8 through a delivery pipe 9. The input end of the acid neutralization pump 10 is externally connected to an acid source for neutralization. On one side of the bottom of the acid-base treatment tank 8, a sewage pipe 15 is connected, and a sewage valve is provided on the sewage pipe 15. By opening the sewage pipe 15 through the sewage valve, the sewage generated after the neutralization reaction can be released.

[0038] Reinforcing plates 18 are installed on the outer wall of the acid-base treatment tank 8, and a corrosion-resistant layer 19 is installed on the inner wall of the acid-base treatment tank 8. By means of the reinforcing plates 18 provided outside the acid-base treatment tank 8, the external strength of the acid-base treatment tank 8 can be improved, making it not easily damaged. At the same time, by setting a corrosion-resistant coating on the inner wall of the acid-base treatment tank 8, the acid-base corrosion resistance performance can be enhanced, thereby increasing the service life.

[0039] Corrosion-resistant coatings are provided on the inner walls of the air hood 3 and the air collecting pipe 4. The acid-base treatment tank 8 and the steam tank 6 are made of stainless steel.

[0040] The input end and the output end of the air extraction fan 7 are respectively connected to the steam tank 6 and the acid-base treatment tank 8. A discharge flowmeter 22 is provided on the exhaust pipe 11. Through the discharge flowmeter 22, it is convenient to monitor the alkali steam treatment volume, facilitating the staff to view and manage.

[0041] Working principle: Install the alkali vapor treatment device on the filter press. The alkali vapor can be automatically collected into the steam tank through the gas collection component. After that, the alkali vapor can be neutralized in the acid-base treatment tank. After the pH value is stable and meets the standard, it can be discharged, which further improves the treatment effect of the alkali vapor. At the same time, an acid-base detection component is set in the acid-base treatment tank, which can help the staff check the acid-base neutralization situation with the cooperation of the pH detector and the acid-base indicator light, thus greatly improving the practicability and convenience of the device. Through the pressure detection component set in the steam tank, the internal air pressure of the steam tank can be monitored under the action of the pressure detector to avoid accidents caused by abnormal pressure. Through the air collection hood set on the water return tank of the filter press, the alkali vapor can be gathered. When the alkali vapor concentration detector detects that the alkali vapor concentration is too high, the alkali vapor can be collected through the air collection fan for subsequent treatment. Through the reinforcement plate set outside the acid-base treatment tank, the external strength of the acid-base treatment tank can be improved, making it not easy to be damaged. At the same time, a corrosion-resistant coating is set on the inner wall of the acid-base treatment tank, which can improve the acid-base corrosion resistance performance, thus prolonging the service life.

[0042] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An alkali steam treatment device for a filter press used for alumina, characterized in that, It includes a gas collection assembly, a steam tank (6) and an acid-base treatment tank (8). The gas collection assembly is connected to the water return tank (2) of the filter press (1). Above the gas collection assembly is connected with a steam tank (6). The steam tank (6) is communicated with the acid-base treatment tank (8) through an air extraction fan (7). An acid-base detection assembly and an acid neutralization pump (10) are arranged on the acid-base treatment tank (8). The acid-base detection assembly includes an acid-base indicator light (13) and a pH value detector (17). The pH value detector (17) is arranged on the inner wall of the acid-base treatment tank (8). The acid-base indicator light (13) is installed at the top of the acid-base treatment tank (8). The side wall of the acid-base treatment tank (8) is connected with an acid neutralization pump (10) through a delivery pipe (9).

2. The alkali steam treatment device for a filter press for alumina according to claim 1, wherein The gas collection assembly includes a gas collection hood (3), a gas collection pipe (4), a gas collection fan (5) and an alkali steam concentration detector (16). The gas collection hood (3) is installed directly above the water return tank (2). Both sides of the top of the gas collection hood (3) are respectively connected to the steam tank (6) through two gas collection pipes (4). Gas collection fans (5) are respectively installed in the middle of the two gas collection pipes (4). The alkali steam concentration detector (16) is installed on the inner wall of the gas collection hood (3). The alkali steam concentration detector (16) is electrically connected to the two gas collection fans (5).

3. The alkali steam treatment device for a filter press for alumina according to claim 2, wherein, A filter screen is arranged at the connection between the gas collection pipe (4) and the gas collection hood (3).

4. The alkali steam treatment device for a filter press used for alumina according to claim 1, wherein, A pressure detection assembly is installed on the steam tank (6). The pressure detection assembly includes an alarm (20) and a pressure detector (21). The pressure detector (21) is installed on the inner wall of the steam tank (6) and its detection end is connected to the inside of the steam tank (6). The alarm (20) is installed at the top of the alarm (20) and is electrically connected to the pressure detector (21).

5. An alkali steam treatment device for a filter press for alumina according to claim 1, characterized in that, The acid-base indicator light (13) is electrically connected to the pH value detector (17). A display (14) is installed in the middle of the front of the acid-base treatment tank (8). The display (14) is electrically connected to the pH value detector (17).

6. The alkali steam treatment device for a filter press for alumina according to claim 1, wherein, An exhaust pipe (11) is connected to the top of one side of the acid-base treatment tank (8). An exhaust valve (12) is arranged on the exhaust pipe (11).

7. An alumina filter press alkali steam treatment device according to claim 1, characterized in that, The output end of the acid neutralization pump (10) is connected to the acid-base treatment tank (8) through a delivery pipe (9). The input end of the acid neutralization pump (10) is externally connected to a source of acid for neutralization. One side of the bottom of the acid-base treatment tank (8) is connected with a sewage discharge pipe (15). A sewage discharge valve is arranged on the sewage discharge pipe (15).

8. The alkali steam treatment device for a filter press used for alumina according to claim 1, wherein, Reinforcing plates (18) are installed on the outer wall of the acid-base treatment tank (8). A corrosion-resistant layer (19) is installed on the inner wall of the acid-base treatment tank (8).

9. The alkali steam treatment device for a filter press for alumina according to claim 2, wherein, Corrosion-resistant coatings are arranged on the inner walls of the gas collection hood (3) and the gas collection pipe (4). The acid-base treatment tank (8) and the steam tank (6) are made of stainless steel.

10. The alkali steam treatment device for a filter press for alumina according to claim 6, wherein, The input end and the output end of the air extraction fan (7) are respectively connected to the steam tank (6) and the acid-base treatment tank (8). An emission flowmeter (22) is arranged on the exhaust pipe (11).

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