Activated carbon adsorption flue gas demercuration device

Abstract

The utility model relates to an activated carbon adsorption flue gas demercuration device, which belongs to the technical field of environmental protection equipment, and comprises a base, an adsorption tower arranged at the top of the base, three supporting bodies fixedly connected in the adsorption tower, a feeding box fixedly connected at the top of the adsorption tower, and the top ends of the supporting bodies extend into the feeding box. And a material passing assembly is arranged in the feeding box. The feeding device has the beneficial effects that when activated carbon adsorption materials need to be fed, the activated carbon adsorption materials can be put into the material conveying box, then the servo motor I is started, and the conveying auger is driven to rotate through the rotation of the output shaft of the servo motor I, so that the activated carbon adsorption materials at the bottom can be conveyed to a high position by utilizing the conveying auger; according to the feeding device for the activated carbon adsorption material, the activated carbon adsorption material is conveyed into the bearing body through the arrangement of the material passing assembly, the purpose of feeding the activated carbon adsorption material can be achieved through the structure, and in the feeding process, the operation space of manual feeding is reduced, and the feeding efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection equipment technology, and in particular to an activated carbon adsorption device for removing mercury from flue gas. Background Technology

[0002] Particulate mercury in flue gas is mainly concentrated in fly ash. Therefore, solid mercury in flue gas in the form of larger particles can be 100% removed by electrostatic precipitators. However, a large amount of solid mercury is adsorbed into submicron-sized particles, which are difficult for general electrostatic precipitators to capture. Bag filters have unique advantages in removing fine dust and can remove about 70% of mercury. Wet flue gas desulfurization (FGD) devices can remove most of the water-soluble Hg2+ in flue gas, but hardly remove the water-insoluble Hg0. Through improved wet FGD treatment, catalysts such as palladium and carbon-based substances are used to convert Hg0 in flue gas into Hg2+, thereby improving the mercury removal rate of wet FGD. Systems that simultaneously install electrostatic precipitators and wet FGD devices achieve an average mercury removal rate of 50% (4%–88%). SCR technology can not only effectively control NOx emissions but also effectively promote Hg0 oxidation.

[0003] A search revealed a Chinese patent (authorization announcement number CN207520825U) disclosing a mercury removal device for flue gas using activated carbon adsorption. This device includes an adsorption tower with a lower flue gas inlet and an upper flue gas outlet, and an activated carbon adsorption device built into the tower. When flue gas enters from the lower inlet and exits from the upper outlet, it passes through the mercury removal device. The device has a circular cross-section in the middle and Y-shaped ends. The device includes a support body with numerous permeable pores and activated carbon adsorbent material, which is filled into the inner cavity of the support body. This patented technology offers convenient maintenance, a small footprint, a large specific surface area, high adsorption rate, and effectively reduces operating costs.

[0004] However, the above-mentioned device still has some drawbacks in actual use. The most obvious one is that when the staff needs to feed the activated carbon adsorbent into the device, the height of the adsorption tower requires the use of ladders or other climbing equipment, which not only increases the difficulty of feeding but also increases the risk of workers climbing to the height to feed. In addition, the device detects whether the activated carbon adsorbent has reached saturation by manually opening the detection port, which requires frequent manual opening of the discharge port, which is time-consuming and labor-intensive. If the manual detection is not timely, it will affect the mercury removal effect of the flue gas. Utility Model Content

[0005] In view of the above-mentioned problems existing in the prior art, the main objective of this utility model is to provide an activated carbon adsorption device for mercury removal from flue gas.

[0006] The technical solution of this utility model is as follows: an activated carbon adsorption device for mercury removal from flue gas includes a base, an adsorption tower is provided on the top of the base, three supports are fixedly connected inside the adsorption tower, a feed box is fixedly connected to the top of the adsorption tower, the top of the supports extends into the interior of the feed box, a material feeding assembly is provided inside the feed box, a feeding pipe is fixedly connected to the top of the adsorption tower and to one side of the adsorption tower, a conveying box is fixedly connected to the outside of the feeding pipe, a servo motor is fixedly installed on the top of the feeding pipe, a conveying auger is rotatably installed inside the feeding pipe, the output shaft of the servo motor extends into the interior of the feeding pipe and is fixedly connected to the conveying auger, and a conveying frame is fixedly connected to the top of the outside of the feeding pipe.

[0007] By adopting the above technical solution, the rotation of the output shaft of the servo motor drives the conveying auger to rotate, thereby using the conveying auger to transport the activated carbon adsorbent material at the bottom to a higher position. Through the setting of the material feeding component, the activated carbon adsorbent material is transported to the support body. Through the above structure, the purpose of feeding activated carbon adsorbent material can be achieved.

[0008] In a preferred embodiment, the feeding assembly includes a switching channel opened at the top of the feeding box, and a butterfly plate is rotatably installed inside the switching channel.

[0009] By adopting the above technical solution and setting up the switch channel, it is convenient to feed the activated carbon adsorbent material.

[0010] In a preferred embodiment, the feeding assembly further includes a second servo motor fixedly installed on the outside of the feeding box, the output shaft of the second servo motor extending into the interior of the switching channel and fixedly connected to the rotation shaft of the butterfly plate.

[0011] By adopting the above technical solution, the rotation of the output shaft of the servo motor can drive the butterfly plate to rotate, thereby enabling the switch channel to be opened or closed.

[0012] In a preferred embodiment, a monitoring component is provided inside the support body. The monitoring component includes a PID sensor fixedly installed inside the support body, a controller fixedly installed on the top of the base, and three alarm lights fixedly installed on the outside of the adsorption tower.

[0013] By adopting the above technical solution and utilizing the PID sensor, the concentration and composition of VOC waste gas can be monitored in real time, thereby determining the adsorption effect and saturation state of activated carbon.

[0014] In a preferred embodiment, the conveying box is internally connected to the feeding pipe, the inner wall of the conveying box is provided with an inclined surface to facilitate material unloading, and the end of the conveying frame away from the feeding pipe is close to the switch channel.

[0015] By adopting the above technical solution, the inclined surface facilitates the entry of activated carbon adsorbent material into the feeding pipe.

[0016] In a preferred embodiment, a baffle plate is fixedly installed inside the adsorption tower and between the three supports, and a gas distributor is fixedly connected to the bottom of the inner wall of the adsorption tower.

[0017] By adopting the above technical solution, the gas can be uniformly adsorbed by the activated carbon adsorbent under the action of the gas distributor and the baffle plate.

[0018] In a preferred embodiment, a discharge pipe is fixedly connected to the top of the adsorption tower, a feed pipe is fixedly connected to the bottom of the adsorption tower, and a support base is fixedly connected to the bottom of the adsorption tower, the support base being welded to the top of the base.

[0019] By adopting the above technical solution and setting up the support base, the adsorption tower can be made more stable when placed.

[0020] In a preferred embodiment, the bottom of each support body is provided with a threaded cap, and the discharge pipe penetrates the interior of the feed box.

[0021] By adopting the above technical solution and using the threaded cap, it is convenient to discharge the saturated activated carbon adsorbent material in the support body.

[0022] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0023] 1. In this utility model, when it is necessary to feed activated carbon adsorbent, the activated carbon adsorbent can be placed in the conveying box. Then, servo motor one is started, and the rotation of the output shaft of servo motor one drives the conveying auger to rotate. In this way, the conveying auger can transport the activated carbon adsorbent at the bottom to a higher position, and through the setting of the material feeding component, the activated carbon adsorbent can be transported to the support body. Through the above structure, the purpose of feeding activated carbon adsorbent can be achieved. In the feeding process, the operation space for manual feeding is reduced and the feeding efficiency is improved.

[0024] 2. In this utility model, the concentration and composition of VOC waste gas can be monitored in real time through the function of the PID sensor, thereby judging the adsorption effect and saturation state of activated carbon. When the adsorption concentration of activated carbon adsorbent material is lower than the preset value of the PID sensor, the information will be transmitted to the controller, and the controller will control the alarm light outside the adsorption tower to start, thus timely reminding the staff without the need for frequent manual detection, saving time and effort. Attached Figure Description

[0025] Figure 1This utility model provides an overall perspective view of an activated carbon adsorption flue gas mercury removal device;

[0026] Figure 2 This utility model provides a schematic diagram of the internal structure of the adsorption tower of an activated carbon adsorption flue gas mercury removal device;

[0027] Figure 3 This utility model provides a schematic diagram of the feed box of an activated carbon adsorption flue gas mercury removal device;

[0028] Figure 4 This utility model provides a schematic diagram of the conveying auger structure for an activated carbon adsorption flue gas mercury removal device.

[0029] Legend: 1. Adsorption tower; 2. Feeding pipe; 3. Conveying box; 4. Base; 5. Controller; 6. Feed pipe; 7. Discharge pipe; 8. Servo motor one; 9. Alarm light; 10. Feeding box; 11. Servo motor two; 12. Butterfly plate; 13. Support body; 14. PID sensor; 15. Baffle plate; 16. Switch channel; 17. Conveying auger. Detailed Implementation

[0030] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0031] Reference Figure 1-4An activated carbon adsorption device for mercury removal from flue gas includes a base 4, an adsorption tower 1 mounted on top of the base 4, three supports 13 fixedly connected inside the adsorption tower 1, a feed box 10 fixedly connected to the top of the adsorption tower 1, the top ends of the supports 13 extending into the feed box 10, a feeding assembly inside the feed box 10, a feeding pipe 2 fixedly connected to the top of the adsorption tower 1 and located on one side of the adsorption tower 1, a conveying box 3 fixedly connected to the outside of the feeding pipe 2, a servo motor 8 fixedly mounted on the top of the feeding pipe 2, a conveying auger 17 rotatably mounted inside the feeding pipe 2, and the output shaft of the servo motor 8 extending into the feed pipe 2. The feed pipe 2 is fixedly connected to the conveying auger 17. A conveying frame is fixedly connected to the top of the outer side of the feed pipe 2. When it is necessary to feed the activated carbon adsorbent, the activated carbon adsorbent can be placed into the feed box 3. Then, the servo motor 8 is started. The rotation of the output shaft of the servo motor 8 drives the conveying auger 17 to rotate. In this way, the conveying auger 17 can be used to transport the activated carbon adsorbent at the bottom to a higher position. Through the setting of the feed assembly, the activated carbon adsorbent is transported into the support body 13. Through the above structure, the purpose of feeding the activated carbon adsorbent can be achieved. In the feeding process, the operation space for manual feeding is reduced and the feeding efficiency is improved.

[0032] Specifically, the feeding assembly includes a switching channel 16 located at the top of the feed box 10. A butterfly plate 12 is rotatably mounted inside the switching channel 16. The feeding assembly also includes a servo motor 11 fixedly mounted on the outside of the feed box 10. The output shaft of the servo motor 11 extends into the switching channel 16 and is fixedly connected to the rotation shaft of the butterfly plate 12. Rotation of the output shaft of the servo motor 11 drives the butterfly plate 12 to rotate, thereby opening or closing the switching channel 16 to facilitate the feeding of activated carbon adsorbent. A monitoring component is installed inside the support body 13. The monitoring component includes... The system includes a PID sensor 14 fixedly installed inside the support body 13, a controller 5 fixedly installed on the top of the base 4, and three alarm lights 9 fixedly installed on the outside of the adsorption tower 1. Through the function of the PID sensor 14, the concentration and composition of VOC waste gas can be monitored in real time, thereby judging the adsorption effect and saturation state of the activated carbon. When the adsorption concentration of the activated carbon adsorbent material is lower than the preset value of the PID sensor 14, the information will be transmitted to the controller 5, and the controller 5 will control the alarm lights 9 outside the adsorption tower 1 to start, thus timely reminding the staff without the need for frequent manual testing, saving time and effort.

[0033] Specifically, the conveying box 3 is internally connected to the feeding pipe 2. The inner wall of the conveying box 3 is provided with an inclined surface to facilitate material discharge. The inclined surface facilitates the entry of activated carbon adsorbent into the feeding pipe 2. The end of the conveyor frame away from the feeding pipe 2 is close to the switch channel 16. A baffle plate 15 is fixedly installed inside the adsorption tower 1 and between the three supports 13. A gas distributor is fixedly connected to the bottom of the inner wall of the adsorption tower 1. Under the action of the gas distributor and the baffle plate 15, the activated carbon adsorbent can be evenly adsorbed. The top of the adsorption tower 1 is fixedly connected to the discharge pipe 7. The bottom of the adsorption tower 1 is fixedly connected to the feed pipe 6. The feed pipe 6 and the discharge pipe 7 work together to allow the flue gas to enter the adsorption tower 1 and to facilitate the discharge of the purified flue gas from the adsorption tower 1. The bottom of the adsorption tower 1 is fixedly connected to the support base, which is welded to the top of the base 4. The support base makes the adsorption tower 1 more stable when placed. The bottom of the support body 13 is provided with a threaded cap. The threaded cap makes it easy to discharge the saturated activated carbon adsorbent material in the support body 13. The discharge pipe 7 passes through the inside of the feed box 10.

[0034] Working principle: First, the activated carbon adsorbent material can be placed into the conveying box 3. Then, the servo motor 8 is started by the controller 5. The rotation of the output shaft of the servo motor 8 drives the conveying auger 17 to rotate, so that the activated carbon adsorbent material at the bottom can be conveyed to a higher position by the conveying auger 17. At the same time, the servo motor 11 is controlled. The rotation of the output shaft of the servo motor 11 drives the butterfly plate 12 to turn, thereby opening the switch channel 16, so that the activated carbon adsorbent material is conveyed into the support body 13, and then the switch channel 16 is closed.

[0035] After the preliminary work is completed, the flue gas can be fed into the adsorption tower 1 through the feed pipe 6. Under the action of the gas distributor and the baffle plate 15, it can be evenly adsorbed by the activated carbon adsorbent. When the adsorption concentration of the activated carbon adsorbent is lower than the preset value of the PID sensor 14 (model: PID-AH2), the information will be transmitted to the controller 5, and the controller 5 will control the alarm light 9 outside the adsorption tower 1 to start, so as to remind the staff in time. There is no need for frequent manual detection, saving time and effort. Finally, the purified flue gas will be discharged through the discharge pipe 7.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0037] The above are merely preferred embodiments of this application and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An activated carbon adsorption device for mercury removal from flue gas, comprising a base (4), characterized in that: An adsorption tower (1) is provided on the top of the base (4). Three supports (13) are fixedly connected inside the adsorption tower (1). A feed box (10) is fixedly connected to the top of the adsorption tower (1). The top of the supports (13) extends into the inside of the feed box (10). A material feeding assembly is provided inside the feed box (10). A feeding pipe (2) is fixedly connected to the top of the adsorption tower (1) and to one side of the adsorption tower (1). A conveying box (3) is fixedly connected to the outside of the feeding pipe (2). A servo motor (8) is fixedly installed on the top of the feeding pipe (2). A conveying auger (17) is rotatably installed inside the feeding pipe (2). The output shaft of the servo motor (8) extends into the inside of the feeding pipe (2) and is fixedly connected to the conveying auger (17). A conveying frame is fixedly connected to the top of the outside of the feeding pipe (2).

2. The activated carbon adsorption flue gas mercury removal device according to claim 1, characterized in that: The feeding assembly includes a switch channel (16) opened at the top of the feed box (10), and a butterfly plate (12) is rotatably installed inside the switch channel (16).

3. The activated carbon adsorption flue gas mercury removal device according to claim 2, characterized in that: The feeding assembly also includes a second servo motor (11) fixedly installed on the outside of the feed box (10). The output shaft of the second servo motor (11) extends into the interior of the switch channel (16) and is fixedly connected to the rotation shaft of the butterfly plate (12).

4. The activated carbon adsorption flue gas mercury removal device according to claim 1, characterized in that: The support (13) is equipped with a monitoring component, which includes a PID sensor (14) fixedly installed inside the support (13), a controller (5) fixedly installed on the top of the base (4), and three alarm lights (9) fixedly installed on the outside of the adsorption tower (1).

5. The activated carbon adsorption flue gas mercury removal device according to claim 2, characterized in that: The material conveying box (3) is connected to the interior of the feeding pipe (2). The inner wall of the material conveying box (3) is provided with an inclined surface to facilitate material feeding. The end of the conveying frame away from the feeding pipe (2) is close to the switch channel (16).

6. The activated carbon adsorption flue gas mercury removal device according to claim 1, characterized in that: A baffle plate (15) is fixedly installed inside the adsorption tower (1) and between the three supports (13), and a gas distributor is fixedly connected to the bottom of the inner wall of the adsorption tower (1).

7. The activated carbon adsorption flue gas mercury removal device according to claim 1, characterized in that: The top of the adsorption tower (1) is fixedly connected to a discharge pipe (7), the bottom of the adsorption tower (1) is fixedly connected to a feed pipe (6), and the bottom of the adsorption tower (1) is fixedly connected to a support base, which is welded to the top of the base (4).

8. The activated carbon adsorption flue gas mercury removal device according to claim 7, characterized in that: The bottom of each support (13) is provided with a threaded cap, and the discharge pipe (7) penetrates the interior of the feed box (10).

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