Dust removal system for a kiln with gas compensation device

Abstract

The utility model discloses a kiln dust removal system with gas compensation device, include: sack cleaner, conveying pipeline, one end of conveying pipeline communicates with kiln's dust export, and other end communicates with the dust import of sack cleaner, conveying pipeline is used for conveying the dust-containing airflow of kiln production to sack cleaner, gas compensation device, including compensation pipeline and control piece, compensation pipeline is connected in conveying pipeline, control piece sets up in compensation pipeline, compensation pipeline is used for the compensation gas of going into conveying pipeline inside, control piece is used for controlling the on-off of compensation pipeline, and the temperature of compensation gas is not higher than normal temperature. The kiln dust removal system provided by the utility model is favorable to keep kiln negative pressure balance, and can reduce the damage of high temperature to sack cleaner.

Description

Technical Field

[0001] This utility model relates to the field of kiln dust removal technology, and in particular to a kiln dust removal system with a gas compensation device. Background Technology

[0002] In the production of new energy materials and other products, dust is generated during the high-temperature calcination and sintering processes inside the kiln. Therefore, a kiln dust removal system is required. This system uses suction equipment to extract the dust from the kiln and then transports it through pipelines to a bag filter for filtration, thereby achieving dust removal while maintaining a clean environment and pressure balance inside the kiln.

[0003] However, if the pipe between the kiln and the bag filter is too short, the high-temperature dust in the kiln will quickly enter the bag filter after being sucked in. On the one hand, this can easily cause excessive positive pressure in the system, leading to blockage of the bag filter's outlet, which in turn disrupts the negative pressure balance in the kiln and causes the system's sealing performance to deteriorate. On the other hand, the high-temperature dust can also have adverse effects on the filter components and other structures of the bag filter, which may damage the bag filter in the long run.

[0004] Therefore, there is an urgent need to propose a kiln dust removal system with a gas compensation device to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a kiln dust removal system with a gas compensation device, which helps to maintain negative pressure balance inside the kiln and can reduce the damage of high temperature to the bag filter.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This utility model provides a kiln dust removal system with a gas compensation device, comprising:

[0008] Baghouse dust collector;

[0009] A conveying pipeline, one end of which is connected to the dust outlet of the kiln and the other end of which is connected to the dust inlet of the bag filter, is used to convey the dust-laden airflow generated by the kiln to the bag filter.

[0010] A gas compensation device includes a compensation pipe and a control component. The compensation pipe is connected to the delivery pipe, and the control component is disposed on the compensation pipe. The compensation pipe is used to introduce compensation gas into the delivery pipe, and the control component is used to control the on / off state of the compensation pipe. The temperature of the compensation gas is not higher than room temperature.

[0011] In some embodiments, the control element is configured as a flow-adjustable valve, which is capable of adjusting the flow rate of the compensating gas.

[0012] In some embodiments, the flow-adjustable valve is any one of a manual butterfly valve, an electric butterfly valve, or a solenoid-controlled valve.

[0013] In some embodiments, the compensating gas is set to air.

[0014] In some embodiments, a filter element is provided at the end of the compensation pipe away from the delivery pipe, the filter element being used to filter the air.

[0015] In some embodiments, the outer periphery of the wall of the compensation pipe is provided with a thermal insulation layer.

[0016] In some embodiments, a pressure detection element is provided on the delivery pipeline for detecting the air pressure inside the delivery pipeline.

[0017] In some embodiments, the bag filter is provided with a pulse jet cleaning device, which is used to spray high-pressure gas onto the filter bags inside the bag filter to remove dust adsorbed on the filter bags. The gas compensation device is in the open state when the pulse jet cleaning device is in operation.

[0018] In some embodiments, the kiln dust removal system with a gas compensation device further includes a water curtain dust collector, the inlet of which is connected to the outlet of the bag filter, and the water curtain dust collector is used to perform secondary dust removal on the airflow filtered by the bag filter.

[0019] In some embodiments, the compensation pipe is welded to the delivery pipe.

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

[0021] The kiln dust removal system with a gas compensation device provided by this utility model can activate the gas compensation device when a high-temperature dust-laden airflow rapidly enters the bag filter through the conveying pipe. This activation involves turning on the control unit to introduce compensation gas into the conveying pipe via the compensation pipe. Firstly, the introduction of compensation gas increases the total volume of the airflow in the conveying pipe. While maintaining a stable suction force, this slows the flow rate of the high-temperature dust-laden airflow, preventing excessive positive pressure caused by a large accumulation of dust within the bag filter due to excessive airflow. This prevents blockage of the bag filter's outlet, ensuring the negative pressure balance between the kiln and the dust removal system is not disrupted, and guaranteeing the overall system seal. Secondly, because the temperature of the compensation gas is not higher than room temperature, its mixing with the high-temperature dust-laden airflow directly reduces the overall temperature of the airflow in the conveying pipe. This prevents the high-temperature airflow from directly impacting the filter components of the bag filter, reducing thermal aging and deformation damage caused by high temperatures, and extending the service life of the bag filter. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a kiln dust removal system with a gas compensation device provided in an embodiment of this utility model;

[0024] Figure 2 This is a cross-sectional view of the compensation pipe provided in an embodiment of this utility model.

[0025] In the picture:

[0026] 1. Baghouse dust collector;

[0027] 2. Delivery pipelines;

[0028] 3. Gas compensation device; 31. Compensation pipeline; 311. Pipe wall; 32. Control components; 33. Insulation layer;

[0029] 4. Water curtain dust removal tower;

[0030] 100. Kiln. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0033] 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.

[0034] In the description of this utility model, it should be noted that the terms "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 utility model is in use. They are used only for the convenience of describing this utility model and for 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0038] like Figure 1 and Figure 2 As shown, this embodiment provides a kiln dust removal system with a gas compensation device, including a bag filter 1, a conveying pipeline 2, and a gas compensation device 3.

[0039] One end of the conveying pipe 2 is connected to the dust outlet of the kiln 100, and the other end is connected to the dust inlet of the bag filter 1. The conveying pipe 2 is used to transport the dust-laden airflow generated by the kiln 100 to the bag filter 1. The bag filter 1 intercepts and filters the dust in the dust-laden airflow. Specifically, the kiln dust removal system is equipped with a suction device (such as a fan), which transports the dust-laden airflow generated by the kiln 100 under the negative pressure suction of the suction device.

[0040] The gas compensation device 3 includes a compensation pipe 31 and a control component 32. The compensation pipe 31 is connected to the conveying pipe 2, and the control component 32 is disposed in the compensation pipe 31. The compensation pipe 31 is used to introduce compensation gas into the conveying pipe 2, and the control component 32 is used to control the on / off state of the compensation pipe 31. The temperature of the compensation gas is not higher than room temperature. Room temperature refers to the natural temperature of the industrial environment where the kiln dust removal system is located, typically between 10℃ and 30℃.

[0041] The kiln dust removal system with a gas compensation device provided in this embodiment can activate the gas compensation device 3 when a high-temperature dust-laden airflow rapidly enters the bag filter 1 through the conveying pipe 2. This involves opening the control component 32 and introducing compensation gas into the conveying pipe 2 through the compensation pipe 31. On one hand, the introduction of compensation gas increases the total volume of the airflow within the conveying pipe 2. While maintaining a stable suction force, this slows the flow rate of the high-temperature dust-laden airflow, preventing excessive positive pressure caused by a large accumulation of dust within the bag filter 1 due to excessive airflow. This prevents blockage of the bag filter 1's outlet, ensuring the negative pressure balance between the kiln 100 and the kiln dust removal system is not disrupted, and guaranteeing the overall system seal. On the other hand, since the compensation gas temperature is not higher than room temperature, its mixing with the high-temperature dust-laden airflow directly reduces the overall temperature of the airflow within the conveying pipe 2. This prevents the high-temperature airflow from directly impacting the filter components of the bag filter 1, reducing thermal aging and deformation damage to the bag filter 1, and extending its service life.

[0042] Optionally, the compensation pipe 31 is welded to the conveying pipe 2. The welded connection has high strength and strong sealing performance.

[0043] In some embodiments, the bag filter 1 is provided with a pulse jet cleaning device (not shown in the figure). The pulse jet cleaning device is used to spray high-pressure gas into the filter bag inside the bag filter 1 to remove the dust adsorbed on the filter bag. The gas compensation device 3 is in the open state when the pulse jet cleaning device is spraying.

[0044] The bag filter 1 includes a pulse jet cleaning system, which can promptly remove dust adsorbed on the filter bags by jetting high-pressure gas, making cleaning operations more convenient. However, the entry of high-pressure gas into the bag filter 1 during jet cleaning causes a temporary increase in positive pressure. The gas compensation device 3 is activated during jet cleaning, which increases the total airflow volume by introducing compensation gas, thus playing a certain role in depressurization and effectively buffering the positive pressure fluctuations caused by jet cleaning, preventing the disruption of the negative pressure balance inside the kiln.

[0045] In some embodiments, the control element 32 is configured as a flow-adjustable valve, which can adjust the flow rate of the compensating gas. This configuration allows the flow-adjustable valve to flexibly adjust the flow rate of the compensating gas to adapt to different operating conditions.

[0046] Alternatively, the flow-adjustable valve can be any one of a manual butterfly valve, an electric butterfly valve, or a solenoid-controlled valve. Among these, manual butterfly valves are low-cost and easy to maintain; electric butterfly valves and solenoid-controlled valves can automatically adjust and precisely control the flow.

[0047] In some embodiments, the compensating gas is air. Air is readily available and requires no additional preparation.

[0048] In some embodiments, a filter element (not shown in the figure) is provided at the end of the compensation pipe 31 away from the conveying pipe 2. The filter element is used to filter the air. This arrangement allows impurities (such as dust and particles) in the air to be filtered out, preventing impurities from entering the conveying pipe 2 and the bag filter 1 with the compensation gas.

[0049] like Figure 2 As shown, in some embodiments, an insulation layer 33 is provided on the outer periphery of the wall 311 of the compensation pipe 31.

[0050] With this setup, the insulation layer 33 can isolate the external high temperature and maintain the temperature of the compensation gas in the compensation pipeline 31, ensuring that the temperature of the compensation gas is never higher than normal before entering the delivery pipeline 2, thereby ensuring the subsequent cooling and pressure stabilization effects.

[0051] Optionally, the insulation layer 33 may include, but is not limited to, rock wool.

[0052] In some embodiments, a pressure detection element is provided on the delivery pipeline 2 to detect the air pressure inside the delivery pipeline 2. The installation of the pressure detection element allows for real-time monitoring of air pressure changes inside the delivery pipeline 2, providing accurate information for the activation of the gas compensation device 3.

[0053] like Figure 1 As shown, in some embodiments, the kiln dust removal system with gas compensation device also includes a water curtain dust removal tower 4. The inlet end of the water curtain dust removal tower 4 is connected to the outlet end of the bag filter 1. The water curtain dust removal tower 4 is used to perform secondary dust removal on the airflow filtered by the bag filter 1.

[0054] With this setup, the water curtain dust collector 4 is connected in series with the bag filter 1, which can perform secondary dust removal on the airflow filtered by the bag filter 1. This can further capture the fine dust that the bag filter 1 has not completely intercepted, which is conducive to improving the overall dust removal effect.

[0055] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A kiln dust removal system with a gas compensation device, characterized in that, include: Baghouse dust collector (1); The conveying pipe (2) is connected at one end to the dust outlet of the kiln (100) and at the other end to the dust inlet of the bag filter (1). The conveying pipe (2) is used to convey the dust-laden airflow generated by the kiln (100) to the bag filter (1). The gas compensation device (3) includes a compensation pipe (31) and a control component (32). The compensation pipe (31) is connected to the delivery pipe (2), and the control component (32) is disposed on the compensation pipe (31). The compensation pipe (31) is used to introduce compensation gas into the delivery pipe (2), and the control component (32) is used to control the opening and closing of the compensation pipe (31). The temperature of the compensation gas is not higher than the ambient temperature.

2. The kiln dust removal system with a gas compensation device according to claim 1, characterized in that, The control element (32) is configured as a flow-adjustable valve, which can adjust the flow rate of the compensation gas.

3. The kiln dust removal system with a gas compensation device according to claim 2, characterized in that, The flow-adjustable valve is any one of a manual butterfly valve, an electric butterfly valve, or a solenoid control valve.

4. The kiln dust removal system with a gas compensation device according to claim 1, characterized in that, The compensating gas is set to air.

5. The kiln dust removal system with a gas compensation device according to claim 4, characterized in that, A filter element is provided at the end of the compensation pipe (31) away from the delivery pipe (2), and the filter element is used to filter the air.

6. The kiln dust removal system with a gas compensation device according to claim 1, characterized in that, The outer periphery of the wall (311) of the compensation pipe (31) is provided with a heat insulation layer (33).

7. The kiln dust removal system with a gas compensation device according to claim 1, characterized in that, A pressure detection device is provided on the conveying pipe (2), which is used to detect the air pressure inside the conveying pipe (2).

8. The kiln dust removal system with a gas compensation device according to any one of claims 1 to 7, characterized in that, The bag filter (1) is equipped with a pulse jet cleaning device. The pulse jet cleaning device is used to spray high-pressure gas into the filter bag inside the bag filter (1) to remove the dust adsorbed on the filter bag. The gas compensation device (3) is in the open state when the pulse jet cleaning device is spraying.

9. The kiln dust removal system with a gas compensation device according to any one of claims 1 to 7, characterized in that, The kiln dust removal system with gas compensation device also includes a water curtain dust removal tower (4), the inlet end of which is connected to the outlet end of the bag filter (1), and the water curtain dust removal tower (4) is used to perform secondary dust removal on the airflow filtered by the bag filter (1).

10. The kiln dust removal system with a gas compensation device according to any one of claims 1 to 7, characterized in that, The compensation pipe (31) is welded to the conveying pipe (2).

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