Desulfurization and denitrification purifier for flue gas purification

Abstract

The utility model discloses a desulfurization and denitrification purifier for flue gas purification, and relates to the field of flue gas purifiers. The flue gas desulfurization device comprises a flue gas inlet pipe, one end of the flue gas inlet pipe is provided with a desulfurization cylinder, the bottom of the desulfurization cylinder is provided with a receiving mechanism, the receiving mechanism comprises a receiving box, the inner bottom of the receiving box is provided with a spiral conveyer, one end of the spiral conveyer is provided with a material conveying pipe, the bottom end of the material conveying pipe is provided with a fan, and the bottom end of the material conveying pipe is provided with an air blower. According to the utility model, through the receiving mechanism, in the process of transporting CaSO3 from the screw conveyor to the material storage barrel, the heat dissipation and cooling of the high-temperature CaSO3 are facilitated through the airflow generated by the fan and the mechanical movement of the screw conveyor, so that the CaSO3 is converted into a more stable state; therefore, the possibility of further oxidation reaction can be reduced, so that the occurrence rate of side reaction is reduced.

Description

Technical Field

[0001] This utility model relates to the field of flue gas purifiers, specifically a desulfurization and denitrification purifier for flue gas purification. Background Art

[0002] Flue gas desulfurization and denitrification purifiers are crucial equipment for industrial flue gas treatment. They effectively reduce nitrogen oxides in flue gas through selective catalytic reduction or selective non-catalytic reduction technologies, while simultaneously using desulfurizing agents to remove sulfur dioxide from the flue gas and convert it into harmless substances. These purifiers are not only highly efficient and stable, but can also automatically adjust according to boiler load, with minimal impact on the boiler and no need for large-scale modifications. When selecting a flue gas desulfurization and denitrification purifier, factors such as treatment efficiency, equipment cost, floor space, and construction period should be comprehensively considered to ensure optimal purification effect and economic benefits.

[0003] In existing flue gas purification technologies, we typically use powdered CaO to react with SO2 in the flue gas to effectively remove SO2 and generate the reactant CaSO3. However, this technology requires a high temperature environment of 350°C to 450°C. After the reaction, due to the continuous high temperature in the environment, the collected CaSO3 may undergo further oxidation to generate calcium sulfate CaSO4. This problem results in the final product being mixed with incompletely reacted CaSO3 and newly generated CaSO4, which seriously affects the purity of the product. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a desulfurization and denitrification purifier for flue gas purification, so as to solve the technical problem that CaSO3 may undergo further oxidation reaction to generate calcium sulfate CaSO4.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a desulfurization and denitrification purifier for flue gas purification, comprising a flue gas inlet pipe, a desulfurization cylinder at one end of the flue gas inlet pipe, a receiving mechanism at the bottom of the desulfurization cylinder, the receiving mechanism comprising a receiving box, a screw conveyor at the bottom of the receiving box, a conveying pipe at one end of the screw conveyor, a fan at the bottom end of the conveying pipe, and a storage tank at the other end of the conveying pipe.

[0006] By adopting the above technical solution, the motor-driven screw conveyor transports the generated CaSO3 from the inside of the receiving box to the conveying pipe; at the same time, the blower is started, and the strong airflow is used to help the CaSO3 to be transported smoothly inside the conveying pipe until it is sent into the storage tank, thus completing the entire collection process.

[0007] Furthermore, a motor is provided at the other end of the screw conveyor for horizontal transport of CaSO3.

[0008] By adopting the above technical solution, a stable power source is provided for the conveyor, ensuring that it can move horizontally continuously and smoothly. This helps to transport the CaSO3 generated by the reaction from the receiving box to the conveying pipe in a timely manner.

[0009] Furthermore, the receiving box has an internal cavity, and the inner bottom surface of the cavity has an inclined structure.

[0010] By adopting the above technical solution, the cavity provides sufficient space for collecting the CaSO3 generated by the reaction, ensuring that all the CaSO3 falling from the desulfurization cylinder can be collected, thus avoiding the scattering and waste of materials.

[0011] Furthermore, both the fan and the motor are electrically connected to an external power source through the control center.

[0012] By adopting the above technical solution, this connection method realizes centralized control and power supply of equipment. Through the control center, operators can easily remotely control the fan and motor, improving the convenience and flexibility of operation.

[0013] Furthermore, a dust removal box is connected to one side of the desulfurization cylinder for filtering dust in the flue gas and performing denitrification treatment.

[0014] By adopting the above technical solution, the flue gas that has undergone desulfurization can directly enter the dust collector for further purification. The main function of the dust collector is to filter dust in the flue gas, which is crucial for reducing air pollution, protecting downstream equipment from dust damage, and improving the quality of flue gas emissions.

[0015] Furthermore, a smoke exhaust pipe is connected to one side of the dust collection box.

[0016] By adopting the above technical solution, the exhaust pipe provides a smooth discharge channel for the clean flue gas after dust removal and denitrification treatment, which ensures that the flue gas can be discharged from the system in a timely and effective manner, preventing the accumulation and backflow of flue gas.

[0017] Furthermore, the receiving box, conveying pipe, and storage hopper are all made of stainless steel.

[0018] By adopting the above technical solutions, the durability and stability of the equipment are guaranteed. The stainless steel material can resist chemical reactions and corrosion, ensuring that no corrosion or pollution will occur when handling chemicals such as CaSO3.

[0019] In summary, the present invention has the following beneficial effects:

[0020] This invention utilizes a receiving mechanism to help cool down the high-temperature CaSO3 during its transport from the screw conveyor to the storage bin. This is achieved through airflow generated by a fan and the mechanical movement of the screw conveyor, which transforms the CaSO3 into a more stable state. This reduces the possibility of further oxidation reactions and thus lowers the incidence of side reactions. Attached Figure Description

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the desulfurization cylinder of this utility model;

[0023] Figure 3 This is a cross-sectional three-dimensional structural diagram of the receiving mechanism of this utility model;

[0024] Figure 4 This is a cross-sectional structural diagram of the receiving mechanism of this utility model.

[0025] In the diagram: 101, flue gas inlet pipe; 102, flue gas outlet pipe; 2, desulfurization cylinder; 3, dust removal box; 4, receiving mechanism; 401, receiving box; 402, cavity; 403, screw conveyor; 404, motor; 405, material conveying pipe; 406, fan; 407, storage bin. Detailed Implementation

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] The following describes an embodiment of the present invention based on its overall structure.

[0028] Example 1:

[0029] A desulfurization and denitrification purifier for flue gas purification, such as Figures 1-4As shown, the system includes an inlet pipe 101, with a desulfurization cylinder 2 at one end. A receiving mechanism 4 is located at the bottom of the desulfurization cylinder 2. The receiving mechanism 4 includes a receiving box 401, with a screw conveyor 403 located at the bottom of the receiving box 401. A conveying pipe 405 is located at one end of the screw conveyor 403, with a fan 406 at the bottom of the conveying pipe 405. A storage tank 407 is located at the other end of the conveying pipe 405. A motor 404 drives the screw conveyor 403 to transport the generated CaSO3 from inside the receiving box 401 to the conveying pipe 405. Meanwhile, the blower 406 is started, using strong airflow to help CaSO3 be transported smoothly inside the conveying pipe 405 until it is sent into the storage tank 407, thus completing the entire collection process. During this transportation process, the mechanical friction of the screw conveyor 403 and the airflow generated by the blower 406 jointly promote the heat dissipation and cooling of the high-temperature CaSO3, making it transform into a more stable state, effectively reducing the risk of further oxidation reaction and reducing the generation of side reactions. This treatment method has significant beneficial effects on improving desulfurization efficiency and product purity.

[0030] See Figure 2 , Figure 3 , Figure 4 The other end of the screw conveyor 403 is equipped with a motor 404 for horizontal transport of CaSO3, providing a stable power source for the conveyor and ensuring its continuous and stable horizontal transport. This helps to transport the CaSO3 generated by the reaction from the receiving box 401 to the conveying pipe 405 in a timely manner. At the same time, the driving force of the motor 404 enables the screw conveyor 403 to efficiently complete the horizontal transport of CaSO3, avoiding time delays and material losses caused by manual handling or inefficient transmission methods. This not only improves the automation level of the desulfurization process, but also optimizes the overall workflow, thereby improving production efficiency.

[0031] See Figure 2 , Figure 3 , Figure 4 The receiving box 401 has an internal cavity 402 with an inclined inner bottom surface. The cavity 402 provides sufficient space for collecting the CaSO3 generated by the reaction, ensuring that all CaSO3 falling from the desulfurization cylinder 2 can be collected, avoiding material spillage and waste. At the same time, the inclined inner bottom surface of the cavity 402 allows the falling CaSO3 to automatically gather towards the center or low-lying area due to gravity. This structure not only simplifies the material collection process but also improves collection efficiency, facilitating subsequent horizontal transport by the screw conveyor 403.

[0032] See Figure 2 , Figure 3 , Figure 4Both the blower 406 and the motor 404 are electrically connected to an external power source through the control center. This connection method enables centralized control and power supply of the equipment. Through the control center, operators can easily remotely control the blower and motor, improving the convenience and flexibility of operation. At the same time, the external power source provides stable and reliable power support for the blower 406 and the motor 404, ensuring that these key devices can operate continuously and stably. This electrical connection method not only simplifies the wiring structure of the equipment but also improves the stability and reliability of the entire desulfurization and denitrification purification system, providing a strong guarantee for flue gas purification treatment.

[0033] Example 2:

[0034] See Figure 1 A dust collector 3 is connected to one side of the desulfurization cylinder 2. This dust collector 3 is used to filter dust in the flue gas and perform denitrification treatment, allowing the desulfurized flue gas to directly enter the dust collector 3 for further purification. The main function of the dust collector 3 is to filter dust in the flue gas, which is crucial for reducing air pollution, protecting downstream equipment from dust damage, and improving the quality of flue gas emissions. At the same time, the dust collector 3 also has a denitrification function, which can effectively remove nitrogen oxides in the flue gas. This is a key step in reducing air pollution, preventing acid rain formation, and reducing the risk of photochemical smog. By integrating desulfurization, dust removal, and denitrification treatment, the entire system not only improves the efficiency of flue gas purification but also ensures that the emission standards of the flue gas meet environmental protection standards, thus playing a positive role in promoting environmental protection.

[0035] See Figure 1 One side of the dust collector 3 is connected to an exhaust pipe 102, which provides a smooth discharge channel for the clean flue gas after dust removal and denitrification treatment. This ensures that the flue gas can be discharged from the system in a timely and effective manner, preventing the accumulation and backflow of flue gas. At the same time, the arrangement of the exhaust pipe 102 also helps to control the emission direction and height of the flue gas, reducing the impact on the surrounding environment. Through this layout, the flue gas can be guided to high altitude for emission, thereby avoiding the impact on the low-altitude environment and improving the environmental protection and safety of the entire flue gas treatment system.

[0036] See Figure 2 , Figure 3 , Figure 4 The receiving box 401, conveying pipe 405, and storage tank 407 are all made of stainless steel, which ensures the durability and stability of the equipment. Stainless steel can resist chemical reactions and corrosion, ensuring that no corrosion or pollution will occur when handling chemicals such as CaSO3. At the same time, the strength and rigidity of stainless steel also enable these devices to withstand the weight and pressure of materials without deformation or damage. In addition, the ease of cleaning of stainless steel simplifies the maintenance and upkeep of the equipment and extends its service life.

[0037] The implementation principle of this utility model is as follows: First, flue gas is transported from the inlet pipe 101 to the inside of the desulfurization cylinder 2. At the same time, powdered CaO is transported into the desulfurization cylinder 2 through an external spraying mechanism. CaO reacts with SO2 in the flue gas to remove SO2. Afterward, the CaSO3 generated by the reaction falls into the receiving box 401 due to its own weight. Subsequently, the CaSO3 is transported by the motor 404 and the screw conveyor 403 to the inside of the conveying pipe 405. Then, the CaSO3 is blown by the fan 406, causing the CaSO3 to be transported inside the conveying pipe 405 until it is transported to the inside of the storage tank 407, completing the collection and treatment of CaSO3. During this process, the movement of CaSO3 by the screw conveyor 403 and the fan 406 helps to cool down the high-temperature CaSO3, making it more stable and reducing the occurrence of further oxidation reactions and side reactions.

[0038] Parts not involved in the present invention are the same as those in the prior art or can be implemented by using the prior art, and will not be described in detail here.

[0039] Although an embodiment of the present invention has been shown and described, this specific embodiment is only an explanation of the present invention and is not a limitation of the present invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiment without creative contribution as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A desulfurization and denitrification purifier for flue gas purification, characterized in that: The invention comprises a smoke inlet pipe (101), a desulfurization cylinder (2) is arranged at one end of the smoke inlet pipe (101), a receiving mechanism (4) is arranged at the bottom of the desulfurization cylinder (2), the receiving mechanism (4) comprises a receiving box (401), a screw conveyor (403) is arranged at the inner bottom of the receiving box (401), a material conveying pipe (405) is arranged at one end of the screw conveyor (403), a fan (406) is arranged at the bottom end of the material conveying pipe (405), and a material storage barrel (407) is arranged at the other end of the material conveying pipe (405).

2. The desulfurization and denitrification purifier for flue gas purification according to claim 1, characterized in that: The other end of the screw conveyor (403) is provided with a motor (404) for horizontally transporting CaSO3.

3. The desulfurization and denitrification purifier for flue gas purification according to claim 1, characterized in that: A cavity (402) is provided inside the receiving box (401), and the inner bottom surface of the cavity (402) is an inclined structure.

4. The desulfurization and denitrification purifier for flue gas purification according to claim 1, characterized in that: The fan (406) and the motor (404) are both electrically connected to an external power source via a control center.

5. The desulfurization and denitrification purifier for flue gas purification according to claim 1, characterized in that: One side of the desulfurization cylinder (2) is connected to a dust removal box (3) for filtering dust in the flue gas and performing denitration treatment.

6. The desulfurization and denitrification purifier for flue gas purification according to claim 5, characterized in that: One side of the dust removal box (3) is connected to a smoke exhaust pipe (102).

7. The desulfurization and denitrification purifier for flue gas purification according to claim 1, characterized in that: The receiving box (401), the material delivery pipe (405) and the material storage barrel (407) are all made of stainless steel.

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