Automatic adding device for flue gas desulfurization agent

Abstract

The utility model relates to the technical field of flue gas desulfurization, and provides an automatic adding device for flue gas desulfurization reagent, which comprises a flue gas pipeline, and the side of the flue gas pipeline is provided with a desulfurization device. The side of the desulfurizer hopper is provided with a blanking anti-blocking device, the blanking anti-blocking device comprises a fixed plate, the side of the fixed plate is fixedly connected to the side of the desulfurizer hopper, the side of the fixed plate is fixedly connected with a motor, the output shaft of the motor is fixedly connected with a reciprocating screw rod, the circumferential surface of the reciprocating screw rod is threadedly connected with a threaded sleeve, the circumferential surface of the threaded sleeve is fixedly connected with a push rod, and the side of the desulfurizer hopper is provided with a chute. Through the above technical scheme, the technical problem that superfine powder is prone to blocking the conveying fan, the conveying pipeline and other equipment in the prior art, causing the desulfurization system to be paralyzed and unable to operate is solved.

Description

Technical Field

[0001] This utility model relates to the field of flue gas desulfurization technology, specifically to an automatic flue gas desulfurization agent addition device. Background Technology

[0002] The desulfurization process mainly involves injecting powdered fixed active calcium or sodium bicarbonate into the boiler flue gas, allowing it to mix thoroughly with the flue gas. Under high temperature conditions, the gaseous SO2 is converted into granular calcium sulfate, thereby removing SO2 from the flue gas. It is characterized by high efficiency, cleanliness, and low cost, and is one of the main technical solutions for solving SO2 pollution problems in flue gas, which can effectively improve the quality of the atmospheric environment.

[0003] A dry desulfurization device for activated carbon tail gas (announcement number: CN222131486U) disclosed in the public notice includes: a bag filter and a dry desulfurization device, with the bag filter and the dry desulfurization device connected by a pipeline; the dry desulfurization device includes: a spray pipe installed inside the shell of the dry desulfurization device, nozzles installed on the spray pipe, a filter screen installed above the spray pipe, the filter screen being fixedly connected to the shell, a rotating shaft passing through the filter screen, and a cleaning plate for cleaning the filter screen installed below the filter screen, the cleaning plate being fixedly connected to the rotating shaft. By installing a filter screen inside the dry desulfurization device to block some dust particles entering the dry desulfurization device, and by installing scrapers and cleaning plates to facilitate cleaning of the inner wall of the shell and the filter screen, the workload of workers is reduced; and by installing baffles to allow the flue gas to fully react with lime powder, removing sulfur dioxide from the flue gas.

[0004] The aforementioned patents use filters to block some dust particles entering the dry desulfurization unit and scrapers and cleaning plates to facilitate cleaning of the inner wall of the casing and the filters. However, they cannot better solve the technical problem that ultrafine powder can easily clog the conveying fan, conveying pipeline and other equipment, causing the desulfurization system to malfunction and become inoperable. Therefore, we propose an automatic flue gas desulfurization agent addition device. Utility Model Content

[0005] To overcome the above-mentioned defects, this utility model provides an automatic flue gas desulfurization agent addition device, which solves the technical problem in the prior art that ultrafine powder easily clogs the conveying fan, conveying pipeline and other equipment, causing the desulfurization system to be paralyzed and unable to operate.

[0006] According to one aspect, at least one embodiment of the present invention provides an automatic flue gas desulfurization agent addition device, comprising: a flue gas duct, wherein a desulfurization device is provided on the side of the flue gas duct; The desulfurization device includes a nitrogen pipeline, one end of which penetrates the inner side of the flue gas duct. A manual nitrogen valve and a solenoid nitrogen valve are installed on the circumference of the nitrogen pipeline. A discharge pipe is connected to the top of the nitrogen pipeline, and a desulfurizing agent hopper is fixedly connected to the top of the discharge pipe. A rain shield is fixedly connected to the top of the desulfurizing agent hopper. The main function of this structure is to uniformly and controllably dispense the desulfurizing agent from the discharge hopper into the flue gas duct using nitrogen assistance, thereby achieving efficient desulfurization. The presence of the nitrogen valve system ensures operational flexibility and automated control.

[0007] For example, in at least one embodiment of this utility model, an automatic flue gas desulfurization agent addition device further includes: a manual discharge valve and a solenoid valve disposed on the circumferential surface of the discharge pipe. Through the cooperation of these two valves, the system not only possesses the high efficiency of automated control but also enables manual intervention in special circumstances, ensuring the flexibility and safety of the equipment.

[0008] One end of the feeding pipe extends through the inner bottom of the desulfurizing agent feeding hopper, and a desulfurizing agent placement platform is fixedly connected to the side of the desulfurizing agent feeding hopper. These two parts work together to ensure the smooth delivery and efficient management of the desulfurizing agent, thereby optimizing the overall operation of the desulfurization process.

[0009] There is a gap between the side of the nitrogen manual valve and the side of the nitrogen solenoid valve, and there is also a gap between the side of the material discharge manual valve and the side of the material discharge solenoid valve. These design details ensure the stability, reliability, and ease of maintenance of the desulfurization unit during long-term operation.

[0010] The feeding solenoid valve controls the addition of desulfurizing agent and provides feedback to the DCS signal. The nitrogen manual valve controls the nitrogen usage, and the nitrogen solenoid valve controls the nitrogen supply and provides feedback to the DCS signal. These valves and solenoid valves are mainly used for automated control and precise adjustment of the dosage of desulfurizing agent and nitrogen, thereby optimizing the production process and ensuring that emissions meet environmental protection standards. At the same time, the DCS signal feedback ensures the accuracy and stability of system monitoring and adjustment.

[0011] The desulfurizing agent feeding hopper is a 45° conical funnel with a top length of 50cm. The desulfurizing agent placement platform is used to store the desulfurizing agent and to add it into the feeding hopper. The desulfurizing agent feeding hopper and the desulfurizing agent placement platform work together to ensure a smooth and stable process from storage to addition of the desulfurizing agent, thereby guaranteeing the efficient operation of the desulfurization unit, precise addition, and compliance with environmental emission requirements.

[0012] According to another aspect, at least one embodiment of this utility model also provides an automatic flue gas desulfurization agent addition device, comprising: a feeding anti-clogging device provided on the side of the desulfurization agent feeding hopper; the feeding anti-clogging device including a fixed plate fixedly connected to the side of the desulfurization agent feeding hopper; a motor fixedly connected to the side of the fixed plate; a reciprocating lead screw fixedly connected to the output shaft of the motor; a threaded sleeve threadedly connected to the circumferential surface of the reciprocating lead screw; a lever fixedly connected to the circumferential surface of the threaded sleeve; a sliding groove formed on the side of the desulfurization agent feeding hopper; and a limit rod fixedly connected to the side of the fixed plate. The purpose of this device is to prevent material accumulation and blockage through mechanical movement, thereby ensuring that the desulfurization agent feeding hopper can operate smoothly and stably.

[0013] For example, in at least one embodiment of this utility model, an automatic flue gas desulfurization agent adding device further includes: the circumferential surface of the threaded sleeve is slidably connected to the circumferential surface of the limiting rod, and there is a gap between the circumferential surface of the threaded sleeve and the side of the desulfurization agent hopper. This gap in design is to ensure that the flow of the desulfurization agent is not excessively obstructed during operation. The gap can prevent material accumulation or blockage, ensuring that the material in the desulfurization agent hopper can flow smoothly.

[0014] The inner bottom of the desulfurizing agent hopper is located on the displacement trajectory of the actuating rod, and the side of the actuating rod is slidably connected to the inner side of the chute. The main purpose of this structural configuration is to ensure that the actuating rod can perform the actuating operation accurately and stably, improve the working efficiency of the desulfurizing agent hopper, and reduce blockages and mechanical failures.

[0015] A telescopic rod is fixedly connected to the inner side of the chute, and one end of the telescopic rod is fixedly connected to the side of the actuating rod. The design of the telescopic rod allows the entire device to adjust the range and force of the actuating rod according to different working requirements, thereby achieving more precise and efficient operation. It also prevents material from flowing out of the chute.

[0016] The beneficial effects of the embodiments of this utility model are as follows: In this invention, the nitrogen pipeline, nitrogen manual valve, and nitrogen solenoid valve work together to achieve efficient desulfurization. The operator opens the nitrogen manual valve and nitrogen solenoid valve, allowing nitrogen to flow into the pipeline. Then, the operator opens the discharge manual valve and discharge solenoid valve, allowing the desulfurizing agent to be discharged through the discharge pipeline from the discharge hopper. This ensures thorough mixing with the flue gas, converting gaseous SO2 into granular calcium sulfate or sodium bicarbonate at high temperatures, thus achieving the removal of SO2 from the flue gas. The presence of the nitrogen valve system ensures operational flexibility and automated control.

[0017] In this invention, the motor, reciprocating screw, threaded sleeve, and limiting rod work together to achieve the following: When the motor is started, it drives the reciprocating screw to rotate. The rotation of the screw causes the threaded sleeve to reciprocate horizontally under the constraint of the limiting rod. This horizontal reciprocating motion of the threaded sleeve drives the actuating rod to reciprocate horizontally, thus agitating the material in the desulfurizer hopper and preventing material accumulation and blockage. The horizontal movement of the actuating rod also causes the telescopic rod to retract and extend. This achieves the effect of preventing material accumulation and blockage through mechanical movement, thereby ensuring the smooth and stable operation of the desulfurizer hopper. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0019] Figure 1 This is a schematic diagram of the front view of one embodiment of the present invention; Figure 2 This is a side view of the structure in one embodiment of the present invention; Figure 3 This is a schematic diagram of the desulfurization device in one embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the anti-blocking device for feeding in one embodiment of the present invention; Figure 5 This is a side sectional structural diagram of one embodiment of the present invention.

[0020] In the diagram: 1. Flue gas duct; 2. Desulfurization device; 3. Feeding anti-blocking device; 21. Nitrogen duct; 22. Nitrogen manual valve; 23. Nitrogen solenoid valve; 24. Feeding duct; 25. Desulfurizing agent feeding hopper; 26. Feeding manual valve; 27. Feeding solenoid valve; 28. Desulfurizing agent placement platform; 29. ​​Rain shield; 31. Fixing plate; 32. Motor; 33. Reciprocating screw; 34. Threaded sleeve; 35. Actuating rod; 36. Slide groove; 37. Limiting rod; 38. Telescopic rod. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0022] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0023] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] 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.

[0025] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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.

[0026] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] like Figures 1-5 As shown, it illustrates an automatic flue gas desulfurization agent addition device in one embodiment of the present invention, comprising: a flue gas duct 1, and a desulfurization device 2 disposed on the side of the flue gas duct 1; The desulfurization unit 2 includes a nitrogen pipeline 21, one end of which penetrates the inner side of the flue gas pipeline 1. A nitrogen manual valve 22 and a nitrogen solenoid valve 23 are installed on the circumference of the nitrogen pipeline 21. A discharge pipeline 24 is connected to the top of the nitrogen pipeline 21, and a desulfurizing agent discharge hopper 25 is fixedly connected to the top of the discharge pipeline 24. A rain shield 29 is fixedly connected to the top of the desulfurizing agent discharge hopper 25. The main function of this structure is to uniformly and controllably deliver the desulfurizing agent from the discharge hopper into the flue gas pipeline 1 with the assistance of nitrogen, thereby achieving efficient desulfurization. The presence of the nitrogen valve system ensures operational flexibility and automated control.

[0028] In some examples, a manual discharge valve 26 and a solenoid discharge valve 27 are installed on the circumferential surface of the discharge pipe 24. Through the cooperation of these two valves, the system not only possesses the high efficiency of automated control but also allows for manual intervention in special circumstances, ensuring the flexibility and safety of the equipment.

[0029] One end of the discharge pipe 24 extends through the bottom inner side of the desulfurizing agent discharge hopper 25, and a desulfurizing agent placement platform 28 is fixedly connected to the side of the desulfurizing agent discharge hopper 25. These two parts work together to ensure the smooth delivery and efficient management of the desulfurizing agent, thereby optimizing the overall operation of the desulfurization process.

[0030] There is a gap between the side of the nitrogen manual valve 22 and the side of the nitrogen solenoid valve 23, and there is a gap between the side of the discharge manual valve 26 and the side of the discharge solenoid valve 27. These design details ensure the stability, reliability, and ease of maintenance of the desulfurization unit 2 during long-term operation.

[0031] The feed solenoid valve 27 controls the addition of desulfurizing agent and provides feedback signals to the DCS. The nitrogen manual valve 22 controls the nitrogen usage, and the nitrogen solenoid valve 23 controls the nitrogen supply and provides feedback signals to the DCS. These valves and solenoid valves are mainly used for automated control and precise adjustment of the dosage of desulfurizing agent and nitrogen, thereby optimizing the production process and ensuring that emissions meet environmental standards. At the same time, the DCS signal feedback ensures the accuracy and stability of system monitoring and adjustment.

[0032] The desulfurizing agent feeding hopper 25 is a 45° conical funnel with a top length of 50cm. The desulfurizing agent placement platform 28 is used to store the desulfurizing agent and to add it into the feeding hopper 25. The desulfurizing agent feeding hopper 25 and the desulfurizing agent placement platform 28 work together to ensure a smooth and stable process from storage to addition of the desulfurizing agent, thereby guaranteeing the efficient operation, precise addition, and compliance with environmental emission requirements of the desulfurization unit 2.

[0033] For example, such as Figures 1-5As shown, the operator manually opens the nitrogen manual valve 22 and simultaneously activates the nitrogen solenoid valve 23, allowing nitrogen to flow smoothly into the nitrogen pipeline 21. At this time, the nitrogen in the pipeline 21 is cleared, removing any potential build-up and ensuring smooth nitrogen delivery, providing the necessary gas pressure and flow support for subsequent operations. Next, the operator simultaneously opens the discharge manual valve 26 and the discharge solenoid valve 27, allowing the desulfurizer in the desulfurizer discharge hopper 25 to be accurately and stably delivered to the flue gas treatment area through the discharge pipeline 24. During this process, the desulfurizer mixes and reacts fully with the flue gas. Especially under the high-temperature environment within the system, the desulfurizer can chemically react with sulfur dioxide in the flue gas. The calcium-based substances in the desulfurizer combine with SO2 to form granular calcium sulfate, effectively capturing and removing sulfur dioxide from the flue gas. Harmful sulfur dioxide in the flue gas is effectively removed, significantly reducing environmental pollution emissions and meeting relevant environmental standards.

[0034] like Figures 1-5 As shown, this invention illustrates an automatic flue gas desulfurization agent addition device according to another embodiment of the present invention. The device includes: a desulfurization agent feeding hopper 25 with a feeding anti-clogging device 3 on its side; the feeding anti-clogging device 3 includes a fixing plate 31 fixedly connected to the side of the desulfurization agent feeding hopper 25; a motor 32 fixedly connected to the side of the fixing plate 31; a reciprocating screw 33 fixedly connected to the output shaft of the motor 32; a threaded sleeve 34 threadedly connected to the circumferential surface of the reciprocating screw 33; a lever 35 fixedly connected to the circumferential surface of the threaded sleeve 34; a sliding groove 36 on the side of the desulfurization agent feeding hopper 25; and a limit rod 37 fixedly connected to the side of the fixing plate 31. The purpose of this device is to prevent material accumulation and blockage through mechanical movement, thereby ensuring that the desulfurization agent feeding hopper 25 can operate smoothly and stably. In some examples, the circumferential surface of the threaded sleeve 34 is slidably connected to the circumferential surface of the limiting rod 37, and there is a gap between the circumferential surface of the threaded sleeve 34 and the side of the desulfurizing agent hopper 25. This gap in design is to ensure that the flow of desulfurizing agent is not excessively obstructed during operation. The gap can prevent material accumulation or blockage, ensuring that the material in the desulfurizing agent hopper 25 can flow smoothly.

[0035] The inner bottom of the desulfurizing agent feeding hopper 25 is located on the displacement trajectory of the actuating rod 35, and the side of the actuating rod 35 is slidably connected to the inner side of the chute 36. The main purpose of this structural configuration is to ensure that the actuating rod 35 can perform the actuating operation accurately and stably, improve the working efficiency of the desulfurizing agent feeding hopper 25, and reduce blockage and mechanical failure.

[0036] A telescopic rod 38 is fixedly connected to the inner side of the chute 36, and one end of the telescopic rod 38 is fixedly connected to the side of the actuating rod 35. The design of the telescopic rod 38 allows the entire device to adjust the movement range and force of the actuating rod 35 according to different working requirements, thereby achieving a more precise and efficient operation. It also prevents material from flowing out of the chute 36.

[0037] For example, such as Figures 1-5 As shown, after starting the motor 32, the motor 32 drives the reciprocating screw 33 to rotate. With the rotation of the reciprocating screw 33, the threaded sleeve 34 begins to reciprocate horizontally under the constraint of the limiting rod 37. The reciprocating motion of the threaded sleeve 34 further drives the actuating rod 35 to perform a corresponding horizontal reciprocating motion. The horizontal reciprocating motion of the actuating rod 35 acts on the material in the desulfurizing agent hopper 25, repeatedly agitating the material to ensure uniform flow and prevent blockage caused by material accumulation. Simultaneously, the horizontal motion of the actuating rod 35 also drives the telescopic rod 38 to synchronously contract and extend, allowing the telescopic rod 38 to adapt to material flow requirements under different working conditions and ensuring stable system operation. During this process, the precise coordination and linkage between the reciprocating screw 33, the threaded sleeve 34, and the actuating rod 35 ensures the continuous and smooth movement of material in the desulfurizing agent hopper 25, avoiding material stagnation or accumulation, thus ensuring the normal operation of the entire desulfurization system. The retraction and extension of the telescopic rod 38 further enhances the system's adaptability, enabling the equipment to maintain optimal working condition under different operating conditions and avoiding system downtime or efficiency reduction caused by mechanical jamming or material blockage.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An automatic dosing device for flue gas desulfurization agents, characterized in that, include: Flue gas duct (1), and a desulfurization device (2) is provided on the side of the flue gas duct (1); The desulfurization device (2) includes a nitrogen pipeline (21), one end of which passes through the inner side of the flue gas pipeline (1). A nitrogen manual valve (22) is provided on the circumferential surface of the nitrogen pipeline (21), and a nitrogen solenoid valve (23) is provided on the circumferential surface of the nitrogen pipeline (21). A feed pipe (24) is connected through the top of the nitrogen pipeline (21), and a desulfurizing agent feed hopper (25) is fixedly connected to the top of the feed pipe (24). A rain shield (29) is fixedly connected to the top of the desulfurizing agent feed hopper (25).

2. The automatic dosing device for flue gas desulfurization agents according to claim 1, characterized in that, The circumferential surface of the discharge pipe (24) is provided with a manual discharge valve (26) and a discharge solenoid valve (27).

3. The automatic dosing device for flue gas desulfurization agents according to claim 2, characterized in that, One end of the feeding pipe (24) passes through the bottom of the inner side of the desulfurizing agent feeding hopper (25), and a desulfurizing agent placement platform (28) is fixedly connected to the side of the desulfurizing agent feeding hopper (25).

4. The automatic dosing device for flue gas desulfurization agents according to claim 3, characterized in that, There is a gap between the side of the nitrogen manual valve (22) and the side of the nitrogen solenoid valve (23), and there is a gap between the side of the material feeding manual valve (26) and the side of the material feeding solenoid valve (27).

5. The automatic dosing device for flue gas desulfurization agents according to claim 4, characterized in that, The feeding solenoid valve (27) controls the addition of desulfurizing agent and feeds back DCS signals, the nitrogen manual valve (22) controls the amount of nitrogen used, and the nitrogen solenoid valve (23) controls the use of nitrogen and feeds back DCS signals.

6. The automatic dosing device for flue gas desulfurization agents according to claim 5, characterized in that, The desulfurizing agent feeding hopper (25) is a 45° conical funnel with an upper side length of 50cm. The desulfurizing agent placement platform (28) is used to store the desulfurizing agent and to add the desulfurizing agent into the desulfurizing agent feeding hopper (25).

7. The automatic dosing device for flue gas desulfurization agents according to claim 6, characterized in that, The desulfurizing agent feeding hopper (25) is provided with a feeding anti-blocking device (3) on its side. The feeding anti-blocking device (3) includes a fixing plate (31). The side of the fixing plate (31) is fixedly connected to the side of the desulfurizing agent feeding hopper (25). The side of the fixing plate (31) is fixedly connected to a motor (32). The output shaft of the motor (32) is fixedly connected to a reciprocating screw (33). The circumferential surface of the reciprocating screw (33) is threadedly connected to a threaded sleeve (34). The circumferential surface of the threaded sleeve (34) is fixedly connected to a toggle rod (35). The side of the desulfurizing agent feeding hopper (25) is provided with a sliding groove (36). The side of the fixing plate (31) is fixedly connected to a limit rod (37).

8. The automatic dosing device for flue gas desulfurization agents according to claim 7, characterized in that, The circumferential surface of the threaded sleeve (34) is slidably connected to the circumferential surface of the limiting rod (37), and there is a gap between the circumferential surface of the threaded sleeve (34) and the side of the desulfurizing agent hopper (25).

9. The automatic dosing device for flue gas desulfurization agents according to claim 8, characterized in that, The inner bottom of the desulfurizing agent feeding hopper (25) is located on the displacement trajectory of the actuating rod (35), and the side of the actuating rod (35) is slidably connected to the inner side of the chute (36).

10. An automatic flue gas desulfurization agent addition device according to claim 9, characterized in that, A telescopic rod (38) is fixedly connected to the inner side of the slide (36), and one end of the telescopic rod (38) is fixedly connected to the side of the actuating rod (35).

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