Automatic cleaning system for water seal sediment of dry quenching water seal type ground dust remover

Abstract

The utility model relates to the technical field of metallurgical coking, and provides an automatic cleaning system for water seal precipitates of a dry quenching water seal type ground dust remover. Comprising a water seal tank, a wastewater collection tank, a coagulation tank, a flocculation tank, an adjusting tank, an inclined tube precipitation tank, a water purification tank, a wastewater lifting pump, a first dosing device, a second dosing device, a third dosing device, a fourth dosing device, a first circulating pump and a first return pipe, wastewater in the water seal tank is sequentially treated by the wastewater collection tank, the coagulation tank, the flocculation tank, the adjusting tank and the inclined tube precipitation tank and then flows to the water purification tank, a first blow-off pipe is arranged at the lower end of the water seal tank and connected with the wastewater collection tank, and the wastewater lifting pump is used for pumping the wastewater in the wastewater collection tank into the coagulation tank. By continuously discharging the sediments in the water seal tank, the situation that the water level in the water seal tank is too low due to excessive sediments is avoided, the operation stability coefficient and the labor efficiency of the dust remover are improved, water resources can be recycled, and the resource utilization rate is increased.

Description

Technical Field

[0001] This application relates to the field of metallurgical coking technology, and more specifically, to an automatic cleaning system for water-sealed sediment in a dry quenching coke water-sealed ground dust collector. Background Technology

[0002] Because the dry quenching flue gas contains a large amount of coke powder and dust, some of the coke powder and dust will enter the water seal tank during the operation of the water seal ground dust collector and settle at the bottom of the water seal tank. This sediment needs to be discharged regularly, otherwise the water level inside the water seal tank will be too low. If the water level inside the water seal tank is too low, it will cause the water seal to break down or the moving hood to malfunction, making the dust collector unable to operate. Since the aqueous solution of the sediment inside the water seal tank is a hazardous waste liquid, the hazardous waste liquid can only be discharged into the coke powder pool and cannot be discharged outside. Due to the influence of production and objective factors such as gravity sewage discharge of the water seal tank, there is a lot of sediment inside the water seal tank, and manual cleaning is inefficient and costly. Utility Model Content

[0003] The purpose of this application is to provide an automatic cleaning system for water seal sediment in a dry quenching coke water seal ground dust collector, which continuously discharges sediment inside the water seal tank and recycles water, thereby improving resource utilization and reducing production costs.

[0004] This application provides an automatic cleaning system for water-sealed sediment in a dry quenching coke water-sealed ground dust collector, employing the following technical solution:

[0005] An automatic cleaning system for water-sealed sediment in a dry quenching coke ground dust collector includes a water seal tank, a wastewater collection tank, a coagulation tank, a flocculation tank, a regulating tank, an inclined tube sedimentation tank, a clean water tank, a wastewater lift pump, a first dosing device, a second dosing device, a third dosing device, a fourth dosing device, a first circulation pump, and a first return pipe. Wastewater inside the water seal tank is sequentially treated through the wastewater collection tank, the coagulation tank, the flocculation tank, the regulating tank, and the inclined tube sedimentation tank before flowing into the clean water tank. A first drain pipe is installed at the lower end of the water seal tank. A drain pipe is connected to the wastewater collection tank. The wastewater lift pump is used to pump the wastewater inside the wastewater collection tank into the coagulation tank. The first dosing device is used to add chemicals into the coagulation tank. The second dosing device is used to add chemicals into the flocculation tank. The third dosing device is used to add chemicals into the regulating tank. The fourth dosing device is used to add chemicals into the regulating tank and the inclined tube sedimentation tank. The first circulation pump is used to pump the water inside the clean water tank to the first return pipe. The first return pipe is connected to the water seal tank.

[0006] Preferably, the first drain pipe is equipped with a first flow meter and an electric valve, the first return pipe is equipped with a second flow meter, and the water seal tank is equipped with a level gauge.

[0007] Preferably, the automatic cleaning system for water-sealed sediment in the dry quenching coke water-sealed ground dust collector further includes a sludge thickening tank. A second drain pipe and a sludge pump are provided between the inclined tube sedimentation tank and the sludge thickening tank. The sludge pump is used to pump the sediment at the bottom of the inclined tube sedimentation tank to the second drain pipe. The second drain pipe is connected to the sludge thickening tank, and the sludge thickening tank is connected to the fourth dosing device.

[0008] Preferably, the automatic cleaning system for water-sealed sediment in the dry quenching coke water-sealed ground dust collector further includes a plate and frame filter press. A screw pump is installed between the plate and frame filter press and the sludge thickening tank. The screw pump is used to transport the concentrated sludge inside the sludge thickening tank to the plate and frame filter press. A second return pipe is installed between the plate and frame filter press and the flocculation tank.

[0009] Preferably, the sludge thickening tank is connected to a third return pipe and a second circulation pump. The second circulation pump is used to pump the overflow water from the sludge thickening tank to the third return pipe, which is connected to the quenching water tank.

[0010] Preferably, two sludge pumps are connected in parallel.

[0011] Preferably, two screw pumps are connected in parallel.

[0012] Preferably, two wastewater booster pumps are connected in parallel.

[0013] Compared with the prior art, the beneficial effects of this application are as follows:

[0014] This application improves the dust collector's operational stability and labor efficiency by continuously draining sediment from the inside of the water seal tank, thus avoiding excessive sediment buildup that could lead to a low water level. It also enables the recycling of water resources, increasing resource utilization and reducing production costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of some embodiments of the present utility model.

[0017] The reference numerals in the attached figures are as follows:

[0018] 1. Water seal tank; 2. Wastewater collection tank; 3. Coagulation tank; 4. Flocculation tank; 5. Adjustment tank; 6. Inclined tube sedimentation tank; 7. Clean water tank; 8. Wastewater lift pump; 9. First dosing device; 10. Second dosing device; 11. Third dosing device; 12. Fourth dosing device; 13. First circulation pump; 14. First return pipe; 15. First drain pipe; 16. First flow meter; 17. Electric valve; 18. Second flow meter; 19. Level gauge; 20. Sludge thickening tank; 21. Second drain pipe; 22. Sludge pump; 23. Plate and frame filter press; 24. Screw pump; 25. Second return pipe; 26. Third return pipe; 27. Second circulation pump. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] Example

[0026] like Figure 1 As shown in the embodiment of this application, the automatic cleaning system for water-sealed sediment in a dry quenching coke water-sealed ground dust collector includes a water seal tank 1, a wastewater collection tank 2, a coagulation tank 3, a flocculation tank 4, a regulating tank 5, an inclined tube sedimentation tank 6, a clean water tank 7, a wastewater lift pump 8, a first dosing device 9, a second dosing device 10, a third dosing device 11, a fourth dosing device 12, a first circulation pump 13, and a first return pipe 14. Wastewater inside the water seal tank 1 is sequentially treated by the wastewater collection tank 2, the coagulation tank 3, the flocculation tank 4, the regulating tank 5, and the inclined tube sedimentation tank 6 before flowing into the clean water tank 7. The lower end of 1 is provided with a first sewage pipe 15, which is connected to the wastewater collection tank 2. The wastewater lift pump 8 is used to pump the wastewater inside the wastewater collection tank 2 into the coagulation tank 3. The first dosing device 9 is used to add chemicals into the coagulation tank 3. The second dosing device 10 is used to add chemicals into the flocculation tank 4. The third dosing device 11 is used to add chemicals into the regulating tank 5. The fourth dosing device 12 is used to add chemicals into the regulating tank 5 and the inclined tube sedimentation tank 6. The first circulation pump 13 is used to pump the water inside the clean water tank 7 to the first return pipe 14, which is connected to the water seal tank 1.

[0027] In operation, wastewater from the water seal tank 1 is discharged to the wastewater collection tank 2. The wastewater lift pump 8 pumps the wastewater from the collection tank 2 into the coagulation tank 3. A coagulant is added to the coagulation tank 3 via the first dosing device 9, and the mixture inside the coagulation tank 3 is then stirred. After treatment, the discharge port on the coagulation tank 3 is opened, and the wastewater flows into the flocculation tank 4 under gravity. A flocculant is added to the flocculation tank 4 via the second dosing device 10, and the mixture inside the flocculation tank 4 is stirred again. After treatment, the discharge port on the flocculation tank 4 is opened, and the wastewater flows into the regulating tank 5 under gravity. An oxidant is added to the regulating tank 5 via the third dosing device 11 to oxidize the wastewater. Activated carbon is added to the regulating tank 5 via the fourth dosing device 12. The activated carbon is used to remove pollutants from the wastewater and to aid in flocculation. The mixture inside tank 4 is stirred. After treatment, the discharge port on the regulating tank 5 is opened, and the wastewater flows into the inclined tube sedimentation tank 6 under gravity. Activated carbon is added into the regulating tank 5 through the fourth dosing device 12 to improve the removal effect of pollutants in the wastewater. After the wastewater settles inside the inclined tube sedimentation tank 6, the discharge port of the inclined tube sedimentation tank 6 is opened, and the purified circulating water at the top of the inclined tube sedimentation tank 6 flows into the clean water tank 7 under gravity. The first circulation pump 13 pumps the water inside the clean water tank 7 to the first return pipe 14. The first return pipe 14 transports the circulating water to the water seal tank 1 to realize the recycling of wastewater. By continuously discharging the sediment inside the water seal tank 1, the situation of excessive sediment causing the water level in the water seal tank 1 to be too low is avoided, which improves the operating stability coefficient of the dust collector and the labor efficiency, and saves maintenance costs.

[0028] In this embodiment, a first flow meter 16 and an electric valve 17 are installed on the first sewage pipe 15, a second flow meter 18 is installed on the first return pipe 14, and a level gauge 19 is installed inside the water seal tank 1. In use, the first flow meter 16 is used to detect the flow rate of wastewater inside the first sewage pipe 15, the electric valve 17 is used to adjust the discharge speed of wastewater, and the level gauge 19 is used to detect the water level inside the water seal tank 1. When the water volume inside the water seal tank 1 is insufficient, it is convenient to promptly remind the staff to add water to the water seal tank 1. When the water volume inside the water seal tank 1 is excessive, the discharge of wastewater inside the water seal tank 1 is accelerated, while the return water volume is reduced or the return water is stopped, thereby realizing online control of the water volume inside the water seal tank 1.

[0029] In this embodiment, the automatic cleaning system for water-sealed sediment in a dry quenching coke water-sealed ground dust collector also includes a sludge thickening tank 20. A second drain pipe 21 and a sludge pump 22 are provided between the inclined tube sedimentation tank 6 and the sludge thickening tank 20. The sludge pump 22 is used to pump the sediment at the bottom of the inclined tube sedimentation tank 6 to the second drain pipe 21. The second drain pipe 21 is connected to the sludge thickening tank 20. The sludge thickening tank 20 is connected to a fourth dosing device 12. In use, the sludge pump 22 pumps the sediment at the bottom of the inclined tube sedimentation tank 6 to the second drain pipe 21. The second drain pipe 21 transports the sediment to the sludge thickening tank 20. The fourth dosing device 12 adds activated carbon to the inside of the sludge thickening tank 20. The sludge thickening tank 20 concentrates the sediment, performs preliminary separation of mud and water, and reduces the water content of the sediment.

[0030] In this embodiment, the automatic cleaning system for water-sealed sediment in a dry quenching coke water-sealed ground dust collector also includes a plate and frame filter press 23. A screw pump 24 is installed between the plate and frame filter press 23 and the sludge thickening tank 20. The screw pump 24 is used to transport the concentrated sludge inside the sludge thickening tank 20 to the plate and frame filter press 23. A second return pipe 25 is installed between the plate and frame filter press 23 and the flocculation tank 4. In use, the screw pump 24 transports the concentrated sludge inside the sludge thickening tank 20 to the plate and frame filter press 23. The plate and frame filter press 23 filters the sludge. The coarse purified water obtained by the filter press enters the second return pipe 25. Under the action of gravity, the coarse purified water flows back to the coagulation tank 3 through the second return pipe 25 for further filtration, realizing the recycling of water resources. The sludge obtained by the filter press is transported to the coal yard by a belt conveyor.

[0031] In this embodiment, the sludge thickening tank 20 is connected to a third return pipe 26 and a second circulation pump 27. The second circulation pump 27 is used to pump the overflow water of the sludge thickening tank 20 to the third return pipe 26. The third return pipe 26 is connected to the quenching water tank. In use, the second circulation pump 27 pumps the overflow water of the sludge thickening tank 20 to the third return pipe 26, and the third return pipe 26 transports the overflow water to the quenching water tank to realize the recycling of water resources.

[0032] In this embodiment, two sludge pumps 22 are connected in parallel. When one of the sludge pumps 22 fails, the other sludge pump 22 can be used as a backup, thereby avoiding affecting the normal operation of production.

[0033] In this embodiment, two screw pumps 24 are connected in parallel. When one screw pump 24 fails, the other screw pump 24 can be used as a backup, thereby avoiding disruption to normal production.

[0034] In this embodiment, two wastewater lift pumps 8 are connected in parallel. When one of the wastewater lift pumps 8 is damaged, the other wastewater lift pump 8 can be used as a backup, thereby avoiding affecting the normal operation of production.

[0035] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A dry quenching water-seal type ground deduster water seal sediment automatic cleaning system, characterized in that: The water seal tank box, the waste water collection box, the coagulation tank, the flocculation tank, the adjusting tank, the inclined tube sedimentation tank, the clean water tank, the waste water lifting pump, the first dosing device, the second dosing device, the third dosing device, the fourth dosing device, the first circulating pump and the first backflow pipe, the waste water in the water seal tank box is sequentially treated by the waste water collection box, the coagulation tank, the flocculation tank, the adjusting tank and the inclined tube sedimentation tank and then flows to the clean water tank, the lower end of the water seal tank box is provided with a first blowdown pipe, the first blowdown pipe is connected with the waste water collection box, the waste water lifting pump is used for pumping the waste water in the waste water collection box into the coagulation tank, the first dosing device is used for dosing the inside of the coagulation tank, the second dosing device is used for dosing the inside of the flocculation tank, the third dosing device is used for dosing the inside of the adjusting tank, the fourth dosing device is used for dosing the inside of the adjusting tank and the inclined tube sedimentation tank, the first circulating pump is used for pumping the water in the clean water tank to the first backflow pipe, and the first backflow pipe is connected with the water seal tank box.

2. The automatic cleaning system of water seal precipitate of dry quenching water seal type ground dust collector according to claim 1, characterized in that: The first blowdown pipe is provided with a first flow meter and an electric valve, the first backflow pipe is provided with a second flow meter, and the inside of the water seal tank box is provided with a liquid level meter.

3. The automatic cleaning system of the water seal precipitate of the dry quenching water seal type ground dust collector according to claim 2, characterized in that: The system further comprises a sludge concentration tank, a second blowdown pipe and a sludge pump are arranged between the inclined tube sedimentation tank and the sludge concentration tank, the sludge pump is used for pumping the sediment at the bottom of the inclined tube sedimentation tank to the second blowdown pipe, the second blowdown pipe is connected with the sludge concentration tank, and the sludge concentration tank is connected with the fourth dosing device.

4. The automatic cleaning system of water seal precipitate of dry quenching water seal type ground dust collector according to claim 3, characterized in that: The system further comprises a plate and frame filter press, a screw pump is arranged between the plate and frame filter press and the sludge concentration tank, the screw pump is used for conveying the concentrated sludge in the sludge concentration tank to the plate and frame filter press, and a second backflow pipe is arranged between the plate and frame filter press and the flocculation tank.

5. The automatic cleaning system of the water seal precipitate of the dry quenching water seal type ground dust collector according to claim 4, characterized in that: The sludge concentration tank is connected with a third backflow pipe and a second circulating pump, the second circulating pump is used for pumping the overflow water of the sludge concentration tank to the third backflow pipe, and the third backflow pipe is connected with a quenching water pool.

6. The automatic cleaning system of water seal precipitates of dry quenching water seal type ground dust collector according to claim 3, characterized in that: The sludge pump is provided with two in parallel.

7. The automatic cleaning system of water seal precipitates of a dry quenching water seal type ground deduster according to claim 4, characterized in that: The screw pump is provided with two in parallel.

8. The automatic cleaning system of the water seal precipitate of the dry quenching water seal type ground dust collector according to claim 1, characterized in that: The waste water lifting pump is provided with two in parallel.

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