A dust removal device for calcium hydroxide slurry tank

Abstract

The utility model relates to dust removal equipment technical field, specifically disclose a dust removal device for calcium hydroxide slurry tank, include: fixed box, the fixed box inside is equipped with installation box, installation box is fixedly arranged in fixed box inner bottom through a plurality of support rod, the installation box is equipped with the air intake mechanism, is equipped with the discharge port that the installation box top has opened, the fixed box inboard wall is fixedly provided with the condensation board, is equipped with the collection subassembly between the condensation board and installation box, the fixed box top is fixedly provided with the discharge pipe through and, the utility model discloses the air containing calcium hydroxide dust with humidity is guided into installation box through air intake mechanism, through the mixed liquid and air in installation box fully contact, make air cooling, reduce the water vapour content and dust content in air, through the setting use of cleaning component, carry out cleaning to the cloth air pipe gas outlet, avoid hard scale to block cloth air pipe.

Description

Technical Field

[0001] This utility model belongs to the technical field of dust removal equipment, specifically relating to a dust removal device for a calcium hydroxide slurry tank. Background Technology

[0002] The calcium hydroxide slurry tank is a core piece of equipment in processes such as wet desulfurization, wastewater treatment, chemical neutralization, and flue gas deacidification. It is responsible for mixing quicklime with water to digest it into a calcium hydroxide emulsion, which is then continuously and stably injected into the desulfurization tower, deacidification tower, or wastewater reaction tank via a screw pump. The digestion releases heat to maintain a reaction temperature of 60-90℃, increasing the reaction rate and reducing external steam consumption. The tank's stirring, online slag discharge, cyclone separation, and CIP flushing functions promptly remove unreacted ash and slag to prevent blockage. Coarse slag is transported off-site, while fine slurry is returned for further reaction. The bottom circulation pump sends the incompletely reacted slurry back to the top of the tower for re-spraying, achieving closed-loop utilization of lime resources. Therefore, the entire system simultaneously acts as a reaction buffer, reagent dispenser, temperature stabilizer, and solid-liquid separator, which is of decisive significance for improving pollutant removal efficiency, reducing operating costs, and ensuring long-term continuous operation.

[0003] During the feeding, mixing, and digestion process of calcium hydroxide slurry tank, the top overflow port and maintenance manhole will discharge calcium hydroxide dust containing moisture. If a conventional bag filter is directly installed at these openings, the moisture in the dust will cause condensation and clogging of the filter bags, resulting in a sharp increase in resistance, failure of dust removal, and ultimately a significant decrease in dust removal efficiency, affecting its use. Utility Model Content

[0004] The purpose of this invention is to provide a dust removal device for a calcium hydroxide slurry tank to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A dust removal device for a calcium hydroxide slurry tank includes: a fixed box, an installation box inside the fixed box, the installation box being fixedly mounted at the bottom of the fixed box by multiple support rods, the installation box containing a mixed liquid, an air inlet mechanism on the installation box, an outlet at the top of the installation box, a condensation plate fixedly mounted on the inner side wall of the fixed box, a collection assembly between the condensation plate and the installation box, and an outlet pipe penetrating and fixedly mounted at the top of the fixed box;

[0007] The air intake mechanism includes an air distribution pipe that passes through and is fixedly installed on the top of the mounting box. The bottom of the air distribution pipe is inserted into the mixture. One end of the air inlet of the air distribution pipe passes through the mounting box and is fixedly installed with a valve. The valve is fixedly installed on the outer wall of the mounting box. An air inlet pipe is fixedly installed at the air inlet of the valve. A cleaning component is installed at the air outlet of the air distribution pipe.

[0008] Preferably, the cleaning assembly includes a fixed plate fixedly mounted on the inner side wall of the mounting box, a rotating rod rotatably mounted through the fixed plate, an installation roller fixedly mounted on the top of the rotating rod, and two symmetrically arranged scrapers mounted on the outer side wall of the installation roller, the scrapers being positioned at the air outlet inside the air distribution pipe.

[0009] Preferably, a sealing box is fixedly installed at the bottom of the mounting box, the bottom of the rotating rod passes through the bottom of the mounting box and the top of the sealing box and is fixedly installed with a first bevel gear, and a rotating assembly is provided on the sealing box.

[0010] Preferably, the rotating assembly includes a motor fixedly mounted on the outer wall of the sealed box, a rotating shaft fixedly mounted at the output end of the motor, and a second bevel gear fixedly mounted at the end of the rotating shaft passing through the sealed box, wherein the first bevel gear and the second bevel gear are meshed together.

[0011] Preferably, the collection assembly includes a collection plate fixedly disposed on the inner side wall of the fixed box, the collection plate being inclined, an air outlet frame being disposed through and fixedly disposed on the collection plate, the bottom of the air outlet frame being fixedly disposed on the top of the mounting box, and the discharge port being disposed inside the air outlet frame.

[0012] Preferably, the outer wall of the collecting plate has an installation opening, which is located at the lowest point of the top of the collecting plate. A return pipe is fixedly installed on the inner wall of the installation opening, and the bottom of the return pipe is fixedly connected to the top of the mounting box.

[0013] Preferably, a heat insulation sleeve is fixedly fitted onto the outer wall of the air distribution pipe, and the heat insulation sleeve is disposed inside the mounting box.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The air containing humid calcium hydroxide dust is introduced into the installation box through the air intake mechanism. The air and the mixed liquid in the installation box come into full contact, which cools the air and reduces the water vapor and dust content. The cleaning component cleans the air outlet of the air distribution pipe to prevent hard scale from clogging the pipe. The condenser plate further dehumidifies the treated air, thereby reducing the humidity. This allows the device to be used in conjunction with a bag filter dust collector, preventing condensation and clogging of the filter bags, thus preventing a significant drop in dust removal efficiency and making it easy to use. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present utility model;

[0017] Figure 2 This is a cross-sectional view of the fixing box in this utility model;

[0018] Figure 3This is a cross-sectional view of the connection structure between the mounting box and the collecting plate in this utility model;

[0019] Figure 4 This is a schematic diagram of the connection structure between the scraper and the air distribution pipe in this utility model;

[0020] Figure 5 for Figure 3 Enlarged view of the structure at point A in the middle;

[0021] In the diagram: 1. Fixed box; 2. Mounting box; 3. Condensing plate; 4. Drain pipe; 5. Air distribution pipe; 6. Valve; 7. Air inlet pipe; 8. Heat insulation sleeve; 9. Fixed plate; 10. Rotating rod; 11. Mounting roller; 12. Scraper; 13. Sealing box; 14. First bevel gear; 15. Motor; 16. Rotating shaft; 17. Second bevel gear; 18. Collection plate; 19. Air outlet frame; 20. Return pipe. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1:

[0024] Please see Figure 1 - Figure 5 As shown, a dust removal device for a calcium hydroxide slurry tank includes: a fixed box 1, an installation box 2 inside the fixed box 1, the installation box 2 being fixedly installed at the bottom of the fixed box 1 by multiple support rods, the installation box 2 containing a mixed liquid, an air inlet mechanism on the installation box 2, an outlet on the top of the installation box 2, a condensation plate 3 fixedly installed on the inner side wall of the fixed box 1, a collection assembly between the condensation plate 3 and the installation box 2, and an outlet pipe 4 penetrating and fixedly installed on the top of the fixed box 1;

[0025] The air intake mechanism includes an air distribution pipe 5 that passes through and is fixedly installed on the top of the mounting box 2. The bottom of the air distribution pipe 5 is inserted into the mixture. One end of the air inlet of the air distribution pipe 5 passes through the fixed box 1 and is fixedly installed with a valve 6. The valve 6 is fixedly installed on the outer wall of the fixed box 1. An air inlet pipe 7 is fixedly installed at the air inlet of the valve 6. A cleaning component is installed at the air outlet of the air distribution pipe 5.

[0026] As can be seen from the above, by setting the air inlet pipe 7 at the top overflow port and maintenance manhole of the calcium hydroxide slurry tank, the humid dust-laden air enters the air distribution pipe 5 through the air inlet pipe 7 and valve 6. The end of the air distribution pipe 5 is immersed in the mixed liquid, and the airflow is cut into dense bubbles. The bubbles come into full contact with the liquid during the rising process. The dust is trapped due to inertial collision and wetting. At the same time, the gas temperature drops and water vapor condenses, achieving dust removal and cooling in one step.

[0027] By using the cleaning components, hard scale and deposits attached to the pipe opening are scraped off in real time to prevent blockage and ensure uniform bubbles and smooth airflow. By using the condenser plate 3, when the treated air comes into contact with the condenser plate 3, the remaining water vapor in the air is condensed again, further removing the humidity in the air. By connecting the discharge pipe 4 to the air inlet of the bag filter, the remaining trace dust in the air is removed again, improving the dust removal effect and preventing the bag filter from condensing or clogging, which would cause a sudden increase in resistance and failure of dust removal, thus ensuring dust removal efficiency and improving the dust removal effect.

[0028] It should be noted that the installation box 2 is connected to a circulating pump, a cooling tower and a plate heat exchanger (not shown in the figure), which circulate and cool the mixture (water) inside the installation box 2, so that the mixture can be kept at a low temperature for a long time, which facilitates the condensation of water vapor in the air.

[0029] Specifically, regarding the aforementioned cleanup components, please refer to... Figure 3 , Figure 4 and Figure 5 As shown, the cleaning component includes a fixed plate 9 fixedly installed on the inner side wall of the mounting box 2. A rotating rod 10 is rotatably installed through the fixed plate 9. An installation roller 11 is fixedly installed on the top of the rotating rod 10. Two scrapers 12 are symmetrically arranged on the outer side wall of the installation roller 11. The scrapers 12 are located at the air outlet inside the air distribution pipe 5.

[0030] A sealing box 13 is fixedly installed at the bottom of the mounting box 2. The bottom of the rotating rod 10 passes through the bottom of the mounting box 2 and the top of the sealing box 13 and is fixedly installed with a first bevel gear 14. A rotating assembly is provided on the sealing box 13.

[0031] The rotating assembly includes a motor 15 fixedly mounted on the outer wall of the sealed box 13. A rotating shaft 16 is fixedly mounted on the output end of the motor 15. The end of the rotating shaft 16 passes through the sealed box 13 and is fixedly mounted on a second bevel gear 17. The first bevel gear 14 and the second bevel gear 17 are meshed together.

[0032] As can be seen from the above, the motor 15 drives the rotating rod 10 and the mounting roller 11 to rotate via the rotating shaft 16 and the second bevel gear 17 meshing with the first bevel gear 14. The scraper 12 rotates continuously at the outlet of the air distribution pipe 5 to clean the opening of the air distribution pipe 5. It should be noted that a one-way valve (not shown in the figure) is provided directly above the scraper 12 to prevent the mixed liquid (water at a low temperature) from penetrating into the interior of the air distribution pipe 5 and to prevent the formation of hard scale inside the pipe, which could cause blockage.

[0033] Example 2:

[0034] Specifically, regarding the aforementioned collection components, please refer to... Figure 2 and Figure 3 As shown, the collection assembly includes a collection plate 18 fixedly installed on the inner side wall of the fixed box 1. The collection plate 18 is inclined. An air outlet frame 19 is installed through and fixedly installed on the collection plate 18. The bottom of the air outlet frame 19 is fixedly installed on the top of the mounting box 2, and the discharge port is located inside the air outlet frame 19.

[0035] An installation opening is provided on the outer wall of the collection plate 18. The installation opening is located at the lowest point of the top of the collection plate 18. A return pipe 20 is fixedly installed on the inner wall of the installation opening. The bottom of the return pipe 20 is fixedly connected to the top of the installation box 2.

[0036] As can be seen from the above, the gas that has undergone initial purification continues to rise and encounters the condenser plate 3. Due to the sudden drop in temperature, condensate and residual dust are released again. The condensate flows along the slope of the collection plate 18 to the installation port at the lowest point of the top, and returns directly to the installation box 2 through the return pipe 20, realizing liquid self-circulation, reducing the frequency of water replenishment. The clean, low-humidity air finally enters the discharge pipe 4 through the exhaust frame 19 and is discharged. It can be directly connected to the subsequent bag filter dust collector, avoiding condensation and clogging of the filter bags, and improving the stability and operating cycle of the entire dust removal system.

[0037] Example 3:

[0038] A heat insulation sleeve 8 is fixedly sleeved on the outer wall of the air distribution pipe 5, and the heat insulation sleeve 8 is set inside the installation box 2.

[0039] As can be seen from the above, the heat insulation sleeve 8 prevents the low temperature of the mixed liquid from being conducted to the gas distribution pipe 5. It should be noted that the gas distribution pipe 5 is made of plastic to prevent the gas distribution pipe 5 from being affected by the mixed liquid, which would cause the temperature of the inner wall of the pipe to be too low.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dust removal device for a calcium hydroxide slurry tank, characterized in that, include: A fixed box (1) is provided inside the fixed box (1) and an installation box (2) is provided inside the fixed box (1) by multiple support rods. The installation box (2) is filled with a mixed liquid and has an air inlet mechanism. The top of the installation box (2) has an outlet. A condenser plate (3) is fixedly provided on the inner side wall of the fixed box (1). A collection assembly is provided between the condenser plate (3) and the installation box (2). A discharge pipe (4) is provided through and fixedly installed on the top of the fixed box (1). The air intake mechanism includes an air distribution pipe (5) that passes through and is fixedly installed on the top of the mounting box (2). The bottom of the air distribution pipe (5) is inserted into the mixture. One end of the air inlet of the air distribution pipe (5) passes through the fixed box (1) and is fixedly installed with a valve (6). The valve (6) is fixedly installed on the outer wall of the fixed box (1). An air inlet pipe (7) is fixedly installed at the air inlet of the valve (6). A cleaning component is installed at the air outlet of the air distribution pipe (5).

2. The dust removal device for a calcium hydroxide slurry tank according to claim 1, characterized in that: The cleaning assembly includes a fixed plate (9) fixedly installed on the inner side wall of the mounting box (2), a rotating rod (10) is provided through and rotatably on the fixed plate (9), an installation roller (11) is fixedly installed on the top of the rotating rod (10), and two symmetrically arranged scrapers (12) are provided on the outer side wall of the installation roller (11), and the scrapers (12) are located at the air outlet inside the air distribution pipe (5).

3. The dust removal device for a calcium hydroxide slurry tank according to claim 2, characterized in that: The bottom of the mounting box (2) is fixedly provided with a sealing box (13). The bottom of the rotating rod (10) passes through the bottom of the mounting box (2) and the top of the sealing box (13) and is fixedly provided with a first bevel gear (14). The sealing box (13) is provided with a rotating component.

4. The dust removal device for a calcium hydroxide slurry tank according to claim 3, characterized in that: The rotating assembly includes a motor (15) fixedly mounted on the outer wall of the sealed box (13). A rotating shaft (16) is fixedly mounted at the output end of the motor (15). The end of the rotating shaft (16) passes through the sealed box (13) and is fixedly mounted with a second bevel gear (17). The first bevel gear (14) and the second bevel gear (17) are meshed together.

5. A dust removal device for a calcium hydroxide slurry tank according to claim 1, characterized in that: The collection assembly includes a collection plate (18) fixedly installed on the inner side wall of the fixed box (1). The collection plate (18) is inclined. An air outlet frame (19) is fixedly installed through the collection plate (18). The bottom of the air outlet frame (19) is fixedly installed on the top of the mounting box (2). The discharge port is located inside the air outlet frame (19).

6. A dust removal device for a calcium hydroxide slurry tank according to claim 5, characterized in that: The outer wall of the collecting plate (18) has an installation port, which is located at the lowest point of the top of the collecting plate (18). A return pipe (20) is fixedly installed on the inner wall of the installation port, and the bottom of the return pipe (20) is fixedly connected to the top of the mounting box (2).

7. The dust removal device for a calcium hydroxide slurry tank according to claim 1, characterized in that: The outer wall of the air distribution pipe (5) is fixedly fitted with a heat insulation sleeve (8), which is located inside the mounting box (2).

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