A rotary kiln flue gas desulfurization device with a sodium-based powder uniform injection structure

Abstract

This utility model provides a rotary kiln flue gas desulfurization device with a sodium-based powder uniformly spraying structure, including: a dust removal component, a powder spraying component, and a pipeline component. The powder spraying component is connected to the pipeline component through a conveying pipe, and the pipeline component is connected to the dust removal component through a connecting pipe. The dust removal component includes: a dust collector body. The pipeline component includes: pipeline one, pipeline two, and pipeline three. Pipeline one and pipeline two are respectively installed at the left and right ends of pipeline two. A vibrator is installed on the upper surface of pipeline two. Compared with the prior art, this utility model has the following beneficial effects: by setting the powder spraying component, the uniform spraying of sodium-based powder during use can ensure that the desulfurizing agent is fully dispersed in the flue gas of the pipeline component. During the flue gas desulfurization process, uniform spraying can give the sodium-based powder more contact opportunities with acidic gases such as sulfur dioxide, thereby forming a better desulfurization effect.

Description

Technical Field

[0001] This utility model belongs to the field of rotary kiln equipment, and specifically relates to a rotary kiln flue gas desulfurization device with a sodium-based powder uniform spraying structure. Background Technology

[0002] A rotary kiln flue gas desulfurization (FGD) device is an environmentally friendly device used to treat sulfur-containing flue gas generated during the production process of a rotary kiln. Rotary kilns are commonly used in industrial production, such as cement production and lime calcination. In these processes, the sulfur in the raw materials is converted into sulfur dioxide and other sulfur-containing gases under high-temperature calcination, which are discharged with the flue gas. The main purpose of the rotary kiln FGD device is to remove sulfur from the flue gas, reducing its pollution to the atmospheric environment. In some non-sodium-based desulfurization processes, such as the lime method, the desulfurizing agent particles or slurry can cause erosion and wear on the inner walls and pipes of the equipment during transportation and reaction. The usual solution is to use wear-resistant materials to manufacture equipment components, but this increases the manufacturing cost, and wear-resistant materials also have a limited lifespan, leading to increased downtime and the risk of secondary pollution when needing replacement. For example, some processes generate wastewater or waste residue, which can pollute the environment if not properly treated. The conventional approach is to treat wastewater to meet standards before discharging it, and to safely landfill or comprehensively utilize the waste residue. However, wastewater treatment requires a large investment in equipment and chemicals, the market for comprehensive utilization of waste residue is limited, the treatment cost is high, and there may be potential environmental risks. Therefore, a new structure is needed to solve the above-mentioned technical problems. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a rotary kiln flue gas desulfurization device with a sodium-based powder uniform injection structure, so as to solve the problems mentioned in the background technology.

[0004] This utility model is achieved through the following technical solution: a rotary kiln flue gas desulfurization device with a sodium-based powder uniform spraying structure, comprising: a dust removal component, a powder spraying component, and a pipeline component. The powder spraying component is connected to the pipeline component via a conveying pipe, and the pipeline component is connected to the dust removal component via a connecting pipe. The dust removal component includes: a dust collector body. The pipeline component includes: a first pipeline, a second pipeline, and a third pipeline. The left and right ends of the second pipeline are respectively equipped with the first and second pipelines. A vibrator is installed on the upper surface of the second pipeline. The powder spraying component includes: a raw material tank and a conveying pipe. The upper surface of the raw material tank is equipped with a conveying pipe via a conveying fan. The end of the conveying pipe away from the conveying fan is connected to the outer surface of the second pipeline. The end of the third pipeline away from the second pipeline is connected to the connecting pipe via a sealing flange. The connecting pipe is connected to the dust collector body.

[0005] In a preferred embodiment, the upper surface of the raw material tank is provided with a feed inlet, and sodium-based powder is disposed inside the raw material tank through the feed inlet. A conveying fan is installed at the center of the upper surface of the raw material tank, and the extraction end of the conveying fan is located at the bottom inside the raw material tank.

[0006] In a preferred embodiment, a conveying pipe is installed at the outlet end of the conveying fan. The conveying pipe has an L-shaped structure, and the end of the conveying pipe away from the conveying fan is connected to the center of the right side surface of the second pipe. The outlet end of the conveying pipe is located inside the second pipe. During use, the uniform spraying of sodium-based powder can ensure that the desulfurizing agent (sodium-based powder) is fully dispersed in the flue gas of the pipe assembly. During the flue gas desulfurization process, uniform spraying can give the sodium-based powder more opportunities to come into contact with acidic gases such as sulfur dioxide, thereby forming a better desulfurization effect.

[0007] In a preferred embodiment, the end of pipe one furthest from pipe two is connected to the rotary kiln flue gas outlet. A manual gate valve is installed at the connection between pipe one, pipe two, and pipe three. A vibrator is installed at the center of the upper surface of pipe two to prevent material deposition and bridging. In use, the arrangement of pipe one, pipe two, and pipe three creates an orderly flue gas flow channel. This structure can guide the rotary kiln flue gas to flow along the designed route, making the residence time of the flue gas in the device more reasonable. Combined with the powder injection assembly, it can achieve better desulfurization.

[0008] In a preferred embodiment, the inner diameter structure of the third pipe matches the inner diameter structure of the connecting pipe, and the end of the connecting pipe away from the third pipe is connected to the inlet of the dust collector body.

[0009] In a preferred embodiment, a platform frame with a ladder is installed on the outer surface of the dust collector body, and the dust collector body is a bag filter dust collector.

[0010] After adopting the above technical solution, the beneficial effects of this utility model are as follows: By setting up a powder spraying component, which is connected to the pipeline component through a conveying pipe, the powder spraying component includes a raw material tank and a conveying pipe. The upper surface of the raw material tank is equipped with a conveying pipe through a conveying fan. The end of the conveying pipe away from the conveying fan is connected to the outer surface of the second pipeline. During use, the uniform spraying of sodium-based powder can ensure that the desulfurizing agent (sodium-based powder) is fully dispersed and uniformly transported in the flue gas of the pipeline component. During the flue gas desulfurization process, uniform spraying can give the sodium-based powder more opportunities to contact with acidic gases such as sulfur dioxide, thereby forming a better desulfurization effect.

[0011] By setting up a pipeline assembly, which is connected to the dust removal assembly via connecting pipes, the pipeline assembly includes: Pipeline 1, Pipeline 2, and Pipeline 3. Pipeline 1 and Pipeline 2 are installed on the left and right ends of Pipeline 2, respectively. Pipeline 3 is connected to the dust removal assembly via connecting pipes. In use, the arrangement of Pipeline 1, Pipeline 2, and Pipeline 3 creates an orderly flue gas flow channel. This structure can guide the rotary kiln flue gas to flow along the designed route, making the residence time of the flue gas in the device more reasonable. Combined with the powder injection assembly, it can achieve better desulfurization. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of a rotary kiln flue gas desulfurization device with a sodium-based powder uniform spraying structure according to the present invention.

[0014] Figure 2 This is a schematic diagram of the powder spraying component of a rotary kiln flue gas desulfurization device with a sodium-based powder uniform spraying structure according to the present invention.

[0015] Figure 3 This is a schematic diagram of the piping assembly of a rotary kiln flue gas desulfurization device with a sodium-based powder uniform spraying structure according to the present invention.

[0016] In the diagram, 100 is the powder spraying assembly, 110 is the raw material tank, 120 is the conveying fan, and 130 is the conveying pipe.

[0017] 200 - Pipe assembly, 210 - Pipe one, 220 - Pipe two, 230 - Pipe three, 240 - Vibrator;

[0018] 300 - Dust removal component, 310 - Connecting pipe. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1 to 3This utility model provides a technical solution: a rotary kiln flue gas desulfurization device with a sodium-based powder uniform spraying structure, comprising: a dust removal component 300, a powder spraying component 100, and a pipeline component 200. The powder spraying component 100 is connected to the pipeline component 200 via a conveying pipe 130, and the pipeline component 200 is connected to the dust removal component 300 via a connecting pipe 310. The dust removal component 300 includes a dust collector body. The pipeline component 200 includes: a first pipeline 210, a second pipeline 220, and a third pipeline 230. The left end and right end of the second pipeline 220 are connected to the third pipeline 230. Pipeline 1 210 and pipe 2 220 are respectively installed at the ends. Vibrator 240 is installed on the upper surface of pipe 2 220. The powder spraying assembly 100 includes: raw material tank 110 and conveying pipe 130. The conveying pipe 130 is installed on the upper surface of raw material tank 110 through conveying fan 120. The end of conveying pipe 130 away from conveying fan 120 is connected to the outer surface of pipe 2 220. The end of pipe 3 230 away from pipe 2 220 is connected to connecting pipe 310 through sealing flange. Connecting pipe 310 is connected to the dust collector body.

[0021] Please see Figures 1 to 3 As the first embodiment of this utility model: a feed inlet is provided on the upper surface of the raw material tank 110, sodium-based powder is provided inside the raw material tank 110 through the feed inlet, a conveying fan 120 is installed at the center of the upper surface of the raw material tank 110, and the extraction end of the conveying fan 120 is located at the bottom inside the raw material tank 110.

[0022] A conveying pipe 130 is installed at the outlet end of the conveying fan 120. The conveying pipe 130 has an L-shaped structure. The end of the conveying pipe 130 away from the conveying fan 120 is connected to the center of the right side surface of the second pipe 220, and the outlet end of the conveying pipe 130 is located inside the second pipe 220.

[0023] During use, the user first feeds pre-ground, usable sodium-based powder (NaHCO3) into the raw material tank 110 through the feed inlet. After feeding the sodium-based powder, the user can simultaneously start the conveying fan 120 and the rotary kiln flue gas discharge. The discharged rotary kiln flue gas will enter the pipes 220 and 230 through pipe 1 210. When the rotary kiln flue gas is discharged into the pipe assembly 200, the conveying fan 120 will spray the sodium-based powder from the raw material tank 110 into the pipe 2 220 through the conveying pipe 130. At this time, the sprayed sodium-based powder will interact with the rotary kiln inside the pipe assembly 200. The flue gas undergoes a reaction for desulfurization. Sodium-based powder is sprayed into the flue gas duct components before the dust collector. Under the action of high-temperature flue gas, the sodium-based powder undergoes thermal decomposition. The flue gas inside the duct components comes into full contact with the activated sodium-based powder, resulting in a chemical reaction. SO2 and other acidic media in the flue gas are absorbed and purified. The desulfurized and dried powder particles adhere to the filter bags of the baghouse dust collector with the airflow for further processing. The sodium-based dry flue gas desulfurization efficiency is greater than 95%, and it increases the operating resistance of the flue gas system almost without increasing it. The main chemical reactions completed are: 2NaHCO3 → Na2CO3 + H2O + CO2, SO2 + Na2CO3 → Na2SO3 + CO2. Na2SO3+O2→2Na2SO4), because the uniform spraying of sodium-based powder during use can ensure that the desulfurizing agent (sodium-based powder) is fully dispersed in the flue gas of the pipeline component 200, the uniform spraying during the flue gas desulfurization process can give the sodium-based powder more opportunities to come into contact with acidic gases such as sulfur dioxide, thereby forming a better desulfurization effect.

[0024] Please see Figures 1 to 3 As a second embodiment of the present invention: the end of pipe 1 210 away from pipe 2 220 is connected to the flue gas outlet of the rotary kiln, and a manual gate valve is provided at the connection of pipe 1 210, pipe 2 220 and pipe 3 230. A vibrator 240 for preventing material deposition and bridging is installed at the center of the upper surface of pipe 2 220.

[0025] The inner diameter structure of pipe 3230 matches the inner diameter structure of connecting pipe 310, and the end of connecting pipe 310 away from pipe 3230 is connected to the inlet of the dust collector body.

[0026] The outer surface of the dust collector body is equipped with a platform frame with a ladder, and the dust collector body is a bag dust collector;

[0027] When the pipe assembly 200 is desulfurized through the operation steps of the first embodiment, the user can activate the vibrator 240 on the upper surface of the pipe assembly 200 to make the pipe assembly 200 vibrate. The vibrating pipe assembly 200 can prevent material deposition and bridging, thus ensuring smooth airflow. After desulfurization, the particulate dust in the flue gas will enter the connecting pipe 310 through the third pipe 230, and then enter the dust collector body through the connecting pipe 310 for dust removal (the dust collector body is a bag filter, which is existing technology and will not be described in detail here). During use, the arrangement of the first pipe 210, the second pipe 220 and the third pipe 230 creates an orderly flue gas flow channel. This structure can guide the rotary kiln flue gas to flow along the designed route, making the residence time of the flue gas in the device more reasonable. Combined with the powder injection assembly 100, it can achieve better desulfurization.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotary kiln flue gas desulfurization device with a sodium-based powder uniform injection structure, comprising: The dust removal assembly (300), the powder spraying assembly (100), and the pipeline assembly (200) are characterized in that the powder spraying assembly (100) is connected to the pipeline assembly (200) via a conveying pipe (130), and the pipeline assembly (200) is connected to the dust removal assembly (300) via a connecting pipe (310). The dust removal assembly (300) includes a dust collector body, and the pipe assembly (200) includes a pipe one (210), a pipe two (220) and a pipe three (230). The left and right ends of the pipe two (220) are respectively equipped with the pipe one (210) and the pipe two (220), and a vibrator (240) is installed on the upper surface of the pipe two (220). The powder spraying assembly (100) includes: a raw material tank (110) and a conveying pipe (130). The upper surface of the raw material tank (110) is equipped with a conveying pipe (130) via a conveying fan (120). One end of the conveying pipe (130) away from the conveying fan (120) is connected to the outer surface of pipe two (220). One end of pipe three (230) away from pipe two (220) is connected to a connecting pipe (310) via a sealing flange. The connecting pipe (310) is connected to the dust collector body. One end of pipe one (210) away from pipe two (220) is connected to the rotary kiln flue gas outlet. A manual gate valve is provided at the connection of pipe one (210), pipe two (220) and pipe three (230).

2. The rotary kiln flue gas desulfurization device with a sodium-based powder uniform injection structure as described in claim 1, characterized in that: The upper surface of the raw material tank (110) is provided with a feed inlet. Sodium-based powder for desulfurizing flue gas is provided inside the raw material tank (110) through the feed inlet. A conveying fan (120) is installed at the center of the upper surface of the raw material tank (110). The extraction end of the conveying fan (120) is located at the bottom inside the raw material tank (110).

3. The rotary kiln flue gas desulfurization device with a sodium-based powder uniform injection structure as described in claim 2, characterized in that: The outlet end of the conveying fan (120) is equipped with a conveying pipe (130), which has an L-shaped structure. The end of the conveying pipe (130) away from the conveying fan (120) is connected to the center of the right side surface of the second pipe (220), and the outlet end of the conveying pipe (130) is located inside the second pipe (220).

4. The rotary kiln flue gas desulfurization device with a sodium-based powder uniform injection structure as described in claim 3, characterized in that: A vibrator (240) is installed at the center of the upper surface of the second pipe (220) to prevent material deposition and bridging.

5. The rotary kiln flue gas desulfurization device with a sodium-based powder uniform injection structure as described in claim 4, characterized in that: The inner diameter structure of the pipe three (230) matches the inner diameter structure of the connecting pipe (310), and the end of the connecting pipe (310) away from the pipe three (230) is connected to the inlet of the dust collector body.

6. The rotary kiln flue gas desulfurization device with a sodium-based powder uniform injection structure as described in claim 5, characterized in that: The outer surface of the dust collector body is equipped with a platform frame with a ladder, and the dust collector body is a bag filter dust collector.

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