A light calcium carbonization tower exhaust gas treatment device

Abstract

The utility model discloses a kind of waste gas treatment devices for light calcium carbonization tower, it relates to waste gas filtration technical field, specifically a kind of waste gas treatment devices for light calcium carbonization tower, including waste gas filter, the filter screen and the hollow placement barrel that can be pulled out from waste gas filter side outward are sequentially arranged from top to bottom in waste gas filter, the mounting component is arranged in the uppermost side of waste gas filter close to filter screen, the end of mounting component close to filter screen is provided with multiple collection plate that can slide on filter screen upper surface, by the setting of waste gas filter, filter plate, filter screen, hollow placement barrel, mounting component, collection plate and sealing roller, collection plate can be slid on filter screen surface by mounting component, and impurities are scraped off, cooperate sealing roller to avoid impurities to escape, simultaneously, waste gas is filtered by filter screen and hollow placement barrel, reach the effect of efficiently filtering impurities in waste gas, guarantee the effect of stable filtration.

Description

Technical Field

[0001] This utility model relates to the field of waste gas filtration technology, specifically a waste gas treatment device for a light calcium carbonization tower. Background Technology

[0002] Light calcium carbonate, as an important inorganic chemical raw material, is widely used in plastics, rubber, coatings, papermaking, food, pharmaceuticals, and many other fields. With the rapid development of downstream industries, the global market demand for light calcium carbonate continues to grow, driving the continuous expansion of its production scale. The industrial production of light calcium carbonate typically employs a "calcination-digestion-carbonation" process: First, limestone (CaCO3) is calcined and decomposed to produce quicklime (CaO) and carbon dioxide (CO2); the quicklime undergoes a digestion reaction to produce lime milk (Ca(OH)2); subsequently, carbonation gas (mainly CO2, which can come from limestone calcination tail gas or purchased industrial CO2) is introduced into the lime milk, and light calcium carbonate is produced through a carbonation reaction. During the carbonation stage, due to the atomization and dispersion characteristics of the lime milk, the airflow disturbance of the carbonation gas, and unreacted impurities in the reaction system, waste gas containing various pollutants is generated. Its main components include: ① dust (mainly unsettled light calcium carbonate fine powder and Ca(OH)2 powder after the lime milk droplets have dried); ② unreacted CO2; ③ trace amounts of harmful gases (such as SO2 generated from sulfur and nitrogen impurities in the raw limestone during calcination). x NO x (and trace amounts of ammonia that volatilize during digestion). Direct emission of the aforementioned waste gases would lead to multiple environmental and economic problems: Firstly, dust pollutants would cause particulate matter pollution, harming the surrounding ecological environment and human health; secondly, the loss of fine powdered calcium carbonate products would result in raw material waste and reduced production yield. Thirdly, direct emission of unrecovered CO2 would exacerbate the greenhouse effect, violating the "dual carbon" policy; furthermore, CO2 is a valuable industrial raw material, and direct emission would result in resource waste. Additionally, trace amounts of SO2... x NO x Although the concentrations of harmful gases are low, long-term emissions will still have an adverse impact on the atmospheric environment and make it difficult to meet increasingly stringent environmental emission standards (such as the Integrated Emission Standard for Air Pollutants GB16297-1996 and the Emission Standard for Air Pollutants from Industrial Furnaces GB9078-1996).

[0003] Therefore, in accordance with environmental regulations and the green development needs of light calcium carbonate production, the carbonization waste gas from light calcium carbonate production must undergo strict filtration to remove particulate matter such as fine calcium carbonate powder and calcium hydroxide dust before being emitted into the atmosphere, ensuring compliance with emission standards. However, existing filtration devices suitable for light calcium carbonate carbonization waste gas often experience blockages during actual operation due to the high dust concentration and small particle size in the waste gas. This blockage causes a large amount of dust particles to easily accumulate on the filter screen, leading to clogging. Once the filter screen becomes clogged, it not only significantly reduces the filtration efficiency, failing to effectively intercept dust impurities, but also significantly increases the operating resistance of the device, leading to increased energy consumption. Furthermore, clogged filters require frequent shutdowns for disassembly, cleaning, or replacement, extending equipment maintenance time, increasing labor and material costs, and potentially affecting the continuity of the light calcium carbonate production process, causing considerable inconvenience to operators and the company's stable production. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a waste gas treatment device for a light calcium carbonate carbonization tower, which solves the problems mentioned in the background art.

[0005] (II) Technical Solution To achieve the above objectives, this utility model is implemented through the following technical solution: a waste gas treatment device for a light calcium carbonization tower, comprising a waste gas filter, wherein a filter screen and a hollow placement bucket are arranged sequentially from top to bottom inside the waste gas filter, both of which can be pulled outward from one side of the waste gas filter; an installation component is arranged directly above the filter screen inside the waste gas filter; a plurality of collection plates that can slide on the surface of the filter screen are arranged at one end of the installation component near the filter screen; a collection chamber is opened on the side of the plurality of collection plates that is in contact with the filter screen; and a sealing roller whose outer surface abuts against the filter screen is rotatably connected to the inner side of the collection chamber.

[0006] Optionally, a filter plate extending into the exhaust gas filter is inserted into the right side of the exhaust gas filter, the filter screen is fixedly connected to the filter plate, and a first stabilizing cylinder for supporting the filter plate is fixedly connected to the left side of the exhaust gas filter.

[0007] Optionally, a second stabilizing cylinder for supporting a hollow placement barrel is fixedly connected to the lower left side of the exhaust gas filter near the first stabilizing cylinder, and activated carbon particles are placed inside the hollow placement barrel.

[0008] Optionally, the mounting component includes a first fixing rod fixedly connected to the inner side of the exhaust gas filter. An mounting column is fixedly connected to the end of the first fixing rod away from the inner wall of the exhaust gas filter. An mounting groove is opened on the side of the mounting column near the filter screen. A driven plate is slidably and rotatably connected in the mounting groove. A rotating column with one end able to abut against the filter screen is fixedly connected to the side of the driven plate near the filter screen. Multiple collection plates are fixedly connected to the rotating column. A pushing component is provided in the mounting groove to cause the collection plates to flexibly abut against the filter screen. A fan wheel is fixedly connected to the middle of the rotating column.

[0009] Optionally, the pushing component includes a push plate slidably connected in the mounting groove. A hemispherical block is fixedly connected to the center of the push plate near the driven plate. A limiting groove adapted to the hemispherical block is opened at the center of the driven plate near the hemispherical block. A spring is fixedly connected to the side of the push plate away from the driven plate. The end of the spring away from the push plate is fixedly connected to the top surface inside the mounting groove.

[0010] Optionally, a pull-out sealing plate is provided on the right side of the exhaust gas filter between the filter plate and the hollow placement bucket, and a support slot is provided on the inner left side of the exhaust gas filter.

[0011] (III) Beneficial Effects This utility model provides a waste gas treatment device for a light calcium carbonate carbonization tower, which has the following beneficial effects: This waste gas treatment device for light calcium carbonate carbonization tower, through the arrangement of waste gas filter, filter plate, filter screen, perforated placement barrel, installation components, collection plate and sealing roller, can use the installation components to drive the collection plate to slide and scrape impurities on the surface of the filter screen to remove impurities. The sealing roller helps to prevent impurities from escaping. At the same time, the filter screen and perforated placement barrel realize the staged filtration of waste gas, achieving the effect of efficiently removing impurities from waste gas and ensuring stable filtration effect. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial cross-sectional structural diagram of the exhaust gas filter of this utility model from the front view; Figure 3 This is a schematic diagram of the structure of the collection plate of this utility model.

[0013] In the diagram: 1. Exhaust gas filter; 2. Filter plate; 3. Sealing plate; 4. Hollowed-out placement bucket; 5. Filter screen; 6. First fixing rod; 7. Mounting column; 8. Push plate; 9. Spring; 10. Hemispherical block; 11. Driven plate; 12. Rotating column; 13. Fan wheel; 14. Collection plate; 15. Sealing roller. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Please see Figures 1 to 3 This utility model provides a technical solution: a waste gas treatment device for a light calcium carbonization tower, including a waste gas filter 1, wherein the waste gas enters the equipment from the inlet pipe at the top of the waste gas filter 1, and after being filtered to remove impurities, it is finally discharged from the exhaust pipe at the bottom of the waste gas filter 1. The waste gas filter 1 is provided with a filter screen 5 and a hollow placement bucket 4 arranged from top to bottom, both of which can be pulled out from one side of the waste gas filter 1. An installation component is provided in the waste gas filter 1 near the top of the filter screen 5. Multiple collection plates 14 that can slide on the upper surface of the filter screen 5 are provided at one end of the installation component near the filter screen 5. The multiple collection plates 14 are provided with a collection chamber on one side of the filter screen 5. A sealing roller 15 with its outer surface in contact with the filter screen 5 is rotatably connected to the inner side of the collection chamber.

[0016] Please see Figures 1 to 3 A filter plate 2 is inserted into the right side of the exhaust gas filter 1, with one end extending into the exhaust gas filter 1. The filter screen 5 is fixedly connected to the filter plate 2. A first stabilizing cylinder for supporting the filter plate 2 is fixedly connected to the left side of the exhaust gas filter 1. Therefore, when the filter plate 2 is inserted into the exhaust gas filter 1, one end of it will eventually be embedded in the first stabilizing cylinder. With the help of the first stabilizing cylinder, the filter plate 2 can be effectively supported and fixed, ensuring that the exhaust gas can flow stably through the filter screen 5 to complete the first-stage filtration process after entering the exhaust gas filter 1.

[0017] Please see Figures 1 to 2 Inside the exhaust gas filter 1, on the left side near the lower part of the first stabilizing cylinder, there is a second stabilizing cylinder for supporting the hollow placement barrel 4. Activated carbon particles are placed inside the hollow placement barrel 4. When the hollow placement barrel 4 is inserted into the exhaust gas filter 1, one end of the hollow placement barrel 4 will eventually be embedded in the second stabilizing cylinder. With the help of the second stabilizing cylinder, the hollow placement barrel 4 can be effectively supported and fixed, ensuring that after the exhaust gas enters the exhaust gas filter 1, it is initially filtered by the filter screen 5 and then achieves secondary filtration through the activated carbon particles.

[0018] Please see Figures 1 to 3The installation components include a first fixing rod 6 fixedly connected to the inner side of the exhaust gas filter 1. A mounting column 7 is fixedly connected to the end of the first fixing rod 6 away from the inner wall of the exhaust gas filter 1. A mounting groove is opened on the side of the mounting column 7 near the filter screen 5. A driven plate 11 is slidably and rotatably connected in the mounting groove. A rotating column 12 is fixedly connected to the side of the driven plate 11 near the filter screen 5, and one end of the driven plate 11 can abut against the filter screen 5. Multiple collection plates 14 are fixedly connected to the rotating column 12. A pushing component is provided in the mounting groove to make the collection plates 14 flexibly abut against the filter screen 5. A fan wheel 13 is fixedly connected to the middle of the rotating column 12. Therefore, when exhaust gas enters the exhaust gas filter 1, it drives the impeller 13 to rotate. The rotation of the impeller 13 synchronously drives the rotating column 12 to rotate, and the rotating column 12 in turn drives multiple collection plates 14 to rotate together. Since the lower surface of the collection plate 14 is in contact with the filter screen 5, when the collection plate 14 slides along the surface of the filter screen 5, it can effectively scrape off the impurities on the upper surface of the filter screen 5, thereby ensuring the filtration effect of the filter screen 5. In addition, with the help of the setting of the sealing roller 15, when the collection plate 14 follows the rotating column 12 to rotate, the sealing roller 15 will rotate synchronously around its own axis due to contact with the filter screen 5. This ensures that when the sealing roller 15 moves on the filter screen 5 with the collection plate 14, it will not scrape the impurities on the surface of the filter screen 5, and it can also prevent the impurities from escaping from the opening at the bottom of the collection plate 14.

[0019] Please see Figures 1 to 3 The pushing component includes a push plate 8 that is slidably connected in the mounting groove. A hemispherical block 10 is fixedly connected to the center of the push plate 8 near the driven plate 11. A limiting groove adapted to the hemispherical block 10 is opened at the center of the driven plate 11 near the hemispherical block 10. A spring 9 is fixedly connected to the side of the push plate 8 away from the driven plate 11. The end of the spring 9 away from the push plate 8 is fixedly connected to the top surface inside the mounting groove. Therefore, by setting the spring 9, the push plate 8 can be pushed all the time, thereby causing the hemispherical block 10 to be engaged in the limiting groove of the driven plate 11. Thus, the push plate 8 continuously exerts a pushing force on the driven plate 11 with the help of the hemispherical block 10, and the shape design of the hemispherical block 10 will not interfere with the normal rotation of the driven plate 11. On the right side of the exhaust gas filter 1, between the filter plate 2 and the hollowed-out placement bucket 4, there is a pull-out sealing plate 3, and a support slot is provided on the inner left side of the exhaust gas filter 1. When the workshop is shut down at night, the exhaust gas filter 1 stops working simultaneously. At this time, personnel can remove the sealing plate 3 on the exhaust gas filter 1 and insert a special receiving plate from its reserved opening. The receiving plate is used to receive impurities falling into the collection plate 14. At the same time, when the receiving plate is inserted into the exhaust gas filter 1, the receiving plate can be inserted into the support slot to stabilize the receiving plate. To ensure the filtration effect of filter screen 5, personnel need to pull out filter plate 2 after the machine is shut down each day and backwash filter screen 5. When filter plate 2 is pulled out, the impurities collected in collection plate 14 will fall down with it. The inserted receiving plate can catch these impurities in time, and the upper surface of the receiving plate is provided with grooves for easy collection.

[0020] In summary, when the waste gas treatment device for the light calcium carbide tower is in use, the waste gas first enters the interior of the waste gas filter 1 through the inlet pipe at the top of the waste gas filter 1. With the support and fixation of the filter plate 2 by the first stabilizing cylinder, the waste gas flows steadily through the filter screen 5 on the filter plate 2 to complete the first stage of filtration. During this process, the waste gas drives the impeller 13 to rotate, which drives the rotating column 12 and multiple collection plates 14 to rotate synchronously. The pushing component in the mounting slot continuously pushes the push plate 8 through the spring 9, so that the hemispherical block 10 is engaged in the limiting groove of the driven plate 11, ensuring that the collection plate 14 flexibly contacts the surface of the filter screen 5 and scrapes off impurities. At the same time, the sealing roller 15 prevents impurities from escaping from the bottom opening of the collection plate 14. After primary filtration, the exhaust gas passes through the perforated placement bucket 4, which is supported and fixed by the second stabilizing cylinder. The activated carbon particles inside the bucket achieve secondary deep filtration, and the exhaust gas is finally discharged from the exhaust pipe at the bottom of the exhaust gas filter 1. After the workshop is shut down at night and the exhaust gas filter 1 stops working, personnel can remove the sealing plate 3 between the filter plate 2 and the perforated placement bucket 4, insert the receiving plate into the reserved opening and snap it into the support slot, and then pull out the filter plate 2 to backflush and clean the filter screen 5. At this time, the impurities that fall into the collection plate 14 will be collected by the groove on the upper surface of the receiving plate, ensuring the convenience of the equipment cleaning process and the cleanliness of the environment. The entire process is completed efficiently through the coordinated cooperation of various components. In addition, the end of the filter plate 2 that is inserted into the exhaust gas filter 1 has an arc structure, which can lift the collection plate 14 during the insertion process, so that the filter plate 2 can be smoothly positioned. After the filter plate 2 is fully inserted, the collection plate 14 is flexibly attached to the surface of the filter screen 5 again under the pushing force of the spring 9 of the pushing component.

[0021] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A waste gas treatment device for a light calcium carbonate carbonization tower, comprising a waste gas filter (1), characterized in that: The exhaust gas filter (1) is provided with a filter screen (5) and a hollowed-out placement bucket (4) arranged from top to bottom. An installation component is provided in the exhaust gas filter (1) near the filter screen (5) directly above it. A plurality of collection plates (14) that can slide on the upper surface of the filter screen (5) are provided at one end of the installation component near the filter screen (5). A collection chamber is provided on the side of the plurality of collection plates (14) that is in contact with the filter screen (5). A sealing roller (15) whose outer surface is in contact with the filter screen (5) is rotatably connected to the inner side of the collection chamber.

2. The waste gas treatment device for a light calcium carbonate carbonization tower according to claim 1, characterized in that: A filter plate (2) extending into the exhaust gas filter (1) is inserted into the right side of the exhaust gas filter (1), the filter screen (5) is fixedly connected to the filter plate (2), and a first stabilizing cylinder for supporting the filter plate (2) is fixedly connected to the left side of the exhaust gas filter (1).

3. The waste gas treatment device for a light calcium carbonate carbonization tower according to claim 1, characterized in that: The exhaust gas filter (1) has a second stabilizing cylinder fixedly connected to the lower left side near the first stabilizing cylinder for supporting the hollow placement barrel (4), and the hollow placement barrel (4) contains activated carbon particles.

4. The waste gas treatment device for a light calcium carbonate carbonization tower according to claim 1, characterized in that: The installation components include a first fixing rod (6) fixedly connected to the inner side of the exhaust gas filter (1), and an installation column (7) fixedly connected to one end of the first fixing rod (6) away from the inner wall of the exhaust gas filter (1). An installation groove is provided on the side of the installation column (7) near the filter screen (5). A driven plate (11) is slidably and rotatably connected in the installation groove. A rotating column (12) is fixedly connected on the side of the driven plate (11) near the filter screen (5), and a plurality of collection plates (14) are fixedly connected to the rotating column (12). A pushing component is provided in the installation groove to make the collection plate (14) flexibly abut against the filter screen (5). A fan wheel (13) is fixedly connected to the middle of the rotating column (12).

5. The waste gas treatment device for a light calcium carbonate carbonization tower according to claim 4, characterized in that: The pushing component includes a push plate (8) slidably connected in the mounting groove. A hemispherical block (10) is fixedly connected to the center of the push plate (8) near the driven plate (11). A limiting groove adapted to the hemispherical block (10) is opened at the center of the driven plate (11) near the hemispherical block (10). A spring (9) is fixedly connected to the side of the push plate (8) away from the driven plate (11). The end of the spring (9) away from the push plate (8) is fixedly connected to the top surface inside the mounting groove.

6. The waste gas treatment device for a light calcium carbonate carbonization tower according to claim 1, characterized in that: The exhaust gas filter (1) has a pull-out sealing plate (3) between the filter plate (2) and the hollow placement bucket (4) on the right side, and a support slot is provided on the inner left side of the exhaust gas filter (1).

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