Polymer denitration device for tail gas treatment

Abstract

The utility model relates to a polymer denitration device for tail gas treatment, which comprises a furnace body penetrating through a gas inlet pipe, a support plate fixedly connected in the furnace body, a Roots blower, a gas-material mixer and a closed air feeder, and a rotating disc is fixedly connected with a gas outlet nozzle; a circulating box is arranged on one side of the furnace body, a first fan penetrates through the furnace body, the first fan is communicated with the circulating box through a conveying pipe, a circulating fan penetrates through the circulating box, the conveying pipe penetrates through the circulating box, a first electromagnetic valve is fixedly connected to the circulating pipe, a second electromagnetic valve is fixedly connected to the air inlet pipe, and a hot film sensor is fixedly connected to the air inlet pipe. The denitration agent and the gas can be fully combined, the gas outlet nozzle conveys the gas material into the furnace body, the gas material is uniformly dispersed into the furnace body, the gas material is better removed from the tail gas, the mixing uniformity of the tail gas and the gas material is further improved, and meanwhile the situation that the tail gas discharging effect is reduced due to insufficient contact of the denitration agent and the tail gas can be avoided.

Description

[Technical field]

[0001] The utility model relates to the technical field of tail gas denitration devices, in particular to a polymer denitration device for tail gas treatment. [Background technology]

[0002] In the process of processing industrial silicon frames, tail gas will be continuously generated. The tail gas not only carries a large amount of heat, but also carries carbon dioxide gas, sulfur-containing substances, nitrate-containing substances and a large amount of silicon powder. If the tail gas of sulfur-containing substances, nitrate-containing substances and silicon powder is directly discharged into the air without being treated, it will cause serious pollution to the air environment. Therefore, for the tail gas, it is generally fully treated before it can meet the emission standards. For the treatment of the tail gas, the solid polymer denitrification process is generally used. This process is an in-furnace denitrification process, which mainly adopts the split gas phase The conveying system selects suitable positions at the exhaust gas outlet of the furnace body and the high-temperature zone of the furnace, and drills holes to spray the polymer denitrification agent through the exhaust device, and uses the appropriate reaction temperature to reduce the nitrogen oxides to nitrogen and dihydrogen monoxide, thereby achieving the treatment of the exhaust gas. The split gas phase conveying system is mainly composed of the exhaust device and the furnace body. The exhaust device is connected to the furnace body through a pipeline, and a fixed air inlet pipe runs through the furnace body. In the process of using the air inlet pipe to intake air to the pipe body, the exhaust device transports the denitrification agent into the furnace body, so that the exhaust gas and the denitrification agent are combined, thereby achieving the treatment of the exhaust gas.

[0003] The exhaust device used in the existing polymer denitrification system only transmits the extracted denitrification agent gas directly to the furnace body for denitrification reaction with the exhaust gas, which not only leads to insufficient coverage of the denitrification agent on the exhaust gas, but also because it takes a long time for the denitrification agent to completely diffuse and mix with the exhaust gas, and the exhaust gas does not diffuse evenly in the pipeline, which not only greatly reduces the mixing effect of the exhaust gas and the denitrification agent, but also the insufficient contact time between the exhaust gas and the denitrification agent will result in the exhaust gas not being denitrified in time, thereby affecting the effect of the exhaust gas treatment. [Contents of the utility model]

[0004] The purpose of the utility model is to solve the problems in the prior art and to propose a polymer denitration device for tail gas treatment, which can increase the mixing effect of tail gas and denitration agent and further improve the discharge effect of tail gas.

[0005] To achieve the above-mentioned purpose, the utility model proposes a polymer denitrification device for tail gas treatment, comprising: a furnace body with a fixed air inlet pipe passing through the side wall, a support plate fixedly connected to the furnace body, a Roots blower, an air-material mixer and a closed air feeder, wherein the Roots blower is communicated with the air-flow mixer through a pipeline, and the closed air feeder is communicated with the air-material mixer through a pipeline.

[0006] The bottom of the support plate is driven to rotate and connected to a rotating disk with a built-in chamber, the Roots blower is connected to the chamber through a transmission pipe, and the rotating disk is fixedly connected with a plurality of air outlet nozzles connected to the chamber around its circumference;

[0007] A circulation box is provided on one side of the furnace body, and a fan 1 is fixedly connected to the furnace body, and the fan 1 is communicated with the circulation box through a conveying pipe. A circulation fan is fixedly connected to the circulation box, and the circulation fan is communicated with the furnace body through a circulation pipe. A solenoid valve 1 is fixedly connected to the transmission pipe and the circulation pipe, and a solenoid valve 2 is fixedly connected to the air intake pipe. A thermal film sensor is fixedly connected to the air intake pipe, and a controller is provided on the furnace body, and the controller is electrically connected to the thermal film sensor, and the controller is electrically connected to the solenoid valve 1 and the solenoid valve 2.

[0008] Preferably, a connecting pipe communicating with the chamber is fixedly connected through the center of the rotating disk, the transmission pipe is located in the connecting pipe, a supporting disk is fixedly connected to the transmission pipe, and the supporting disk is rotatably connected to the connecting pipe.

[0009] Preferably, the top of the connecting pipe is provided with a slot, the supporting plate is rotatably connected to the bottom of the slot, a limiting block is provided on the connecting pipe, a bolt is rotatably connected to the limiting block, one end of the bolt passes through the limiting block and is threadedly connected to the connecting pipe.

[0010] Preferably, the controller comprises a control panel, which is fixedly connected to the furnace body, the control panel is electrically connected to the thermal film sensor, and the control panel is electrically connected to the second solenoid valve and the first solenoid valve.

[0011] Preferably, a second fan is fixedly connected through the top surface of the furnace body, an air outlet pipe is fixedly connected through the second fan, a third solenoid valve is fixedly connected to the second air outlet pipe, and the second fan and the third solenoid valve are electrically connected to the control panel.

[0012] Preferably, a partition is fixedly connected between the support plate and the rotating disk, and the connecting pipe is rotatably connected to the partition.

[0013] Preferably, a sealed bearing is provided in the partition, and the inner ring of the sealed bearing is connected to the side wall of the connecting pipe.

[0014] Preferably, a filter screen is fixedly connected to the inner wall of the chamber of the furnace body close to the air inlet pipe.

[0015] Beneficial effects of the utility model: Compared with the prior art,

[0016] The utility model forms an internal circulation of gas in the furnace body by means of a fan and a circulating fan arranged on the furnace body, and utilizes multiple circulations of gas to enable the denitrification agent and the gas to be fully combined, and at the same time, the rotating disk rotates to transmit the gas into the furnace body through the gas outlet nozzle, and evenly disperses the gas into the furnace body, so that the gas is better separated from the exhaust gas, thereby increasing the uniformity of the mixing of the exhaust gas and the gas, and at the same time, it can also avoid the situation where the exhaust gas discharge effect is reduced due to insufficient contact between the denitrification agent and the exhaust gas.

[0017] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the position of the circulation fan of the utility model;

[0020] Figure 3 It is a schematic diagram of the position of the sealed bearing of the utility model.

[0021] In the figure: 1. air inlet pipe; 2. furnace body; 3. support plate; 4. Roots blower; 5. gas-material mixer; 6. closed-air feeder; 7. rotating disk; 8. transmission pipe; 9. air outlet nozzle; 10. circulation box; 11. fan 1; 12. delivery pipe; 13. circulation fan; 14. circulation pipe; 15. solenoid valve 1; 16. solenoid valve 2; 17. thermal film sensor; 18. controller; 19. connecting pipe; 20. support plate; 21. slot; 22. limit block; 23. bolt; 24. control panel; 25. fan 2; 26. air outlet pipe; 27. solenoid valve 3; 28. partition; 29. ​​sealed bearing; 30. filter screen; 31. motor; 32. spur gear 1; 33. spur gear 2. [Specific implementation method]

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0024] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] refer to Figures 1 to 3As shown, a specific embodiment of a polymer denitration device for tail gas treatment of the utility model comprises: a furnace body 2 with a fixed air inlet pipe 1 passing through the side wall, a support plate 3 fixedly connected to the furnace body 2, a Roots blower 4, an air-material mixer 5 and a closed-air feeder 6, wherein the Roots blower 4 is connected to the air flow mixer through a pipeline, and the closed-air feeder 6 is connected to the air-material mixer 5 through a pipeline, and the denitration agent is first transported to the air-material mixer 5 through the closed-air feeder 6, and the denitration agent is more uniform after being mixed by the air-material mixer 5, and is then transported by the Roots blower 4 to a transmission pipe 8 connected thereto, and the transmission pipe 8 is used to transport the air-material into the driven rotationally connected to the bottom of the support plate 3 and The rotating disk 7 of the built-in chamber is communicated with the transmission pipe 8, so it can be transmitted. When the gas enters the chamber, the motor 31 fixedly connected to the support plate 3 is started, and the output shaft of the motor 31 is fixedly connected to the spur gear 32 rotatably connected to the support plate 3, and the spur gear 32 is fixedly connected to the rotating disk 7, so that the rotation of the rotating disk 7 can be realized. When the rotating disk 7 rotates, the gas enters the furnace body 2 through the gas nozzle fixedly connected to the rotating disk 7 and communicated with the chamber, so as to realize the uniform transmission of the airflow in the furnace body 2. During the gas transmission process, the thermal film sensor 17 fixedly connected to the air inlet pipe 1 senses the airflow flow When the airflow reaches a certain level, a signal is transmitted to the controller 18 which is fixedly connected to the furnace body 2 and electrically connected to the thermal film sensor 17. The controller 18 starts, and controls the electromagnetic valve 16 which is electrically connected to it and fixedly connected to the air inlet pipe 1 to be closed. At this time, the fan 11 which is fixedly connected to the furnace body 2 starts, and the airflow is transmitted to the delivery pipe 12 which is connected thereto through the fan 11. The electromagnetic valve 15 which is fixedly connected to the delivery pipe 12 opens, and the airflow enters the circulation box 10 which is connected to the delivery pipe 12 and fixedly connected to the furnace head through the delivery pipe 12. At this time, the circulation fan which is fixedly connected to the circulation box 10 opens. 13 is started, and the circulation fan 13 transmits the airflow in the circulation box 10 through the circulation pipe 14 communicated with the circulation fan 13 and enters into the furnace body 2 communicated with the circulation pipe 14, so as to realize the circulation denitration of the exhaust gas. When the circulation pipe 14 is transmitting, the solenoid valve 15 on the circulation pipe 14 is in the open state, and when the air intake pipe 1 is transmitting, the circulation fan 13, the fan 11 and the solenoid valve 15 are in the closed state. The circulation fan 13, the fan 11 and the solenoid valve 15 are electrically connected with the controller 18. When the thermal film sensor 17 transmits a signal to the control panel 24, the control panel 24 controls the circulation fan 13, the fan 11 and the solenoid valve 15 to be opened or closed.

[0027] Furthermore, a connecting pipe 19 communicating with the chamber is fixedly connected through the center position of the rotating disk 7, the transmission pipe 8 is located in the connecting pipe 19, and a support disk 20 is fixedly connected to the transmission pipe 8. The support disk 20 is rotatably connected to the connecting pipe 19, and a slot 21 is provided on the top of the connecting pipe 19. The support disk 20 is rotatably connected to the bottom of the slot 21. A limit block 22 is provided on the connecting pipe 19, and a bolt 23 is rotatably connected to the limit block 22. One end of the bolt 23 passes through the limit block 22 and is threadedly connected to the connecting pipe 19. When the connecting pipe 19 and the transmission pipe 8 need to be separated, the personnel can remove the bolt 23 to disengage the bolt 23 from the connecting pipe 19, thereby realizing the disassembly of the support disk 20 and the connecting pipe 19, and the slot 21 is used to position the support disk 20.

[0028] Further, the controller 18 includes a control panel 24, which is fixedly connected to the furnace body 2, the control panel 24 is electrically connected to the hot film sensor 17, the control panel 24 is electrically connected to the solenoid valve 2 16 and the solenoid valve 1 15, and the top surface of the furnace body is fixedly connected with a fan 25, and the fan 25 is fixedly connected with an outlet pipe 26, and the outlet pipe 26 is fixedly connected with a solenoid valve 3 27, and the fan 25 and the solenoid valve 3 27 are electrically connected to the control panel 24.

[0029] Furthermore, a partition 28 is fixedly connected between the support plate 3 and the rotating disk 7, and the connecting pipe 19 is rotatably connected to the partition 28. A sealed bearing 29 is arranged inside the partition 28, and the inner ring of the sealed bearing 29 is connected to the side wall of the connecting pipe 19. The partition 28 is mainly used to prevent gas from entering the motor 31 and the spur gear 1 32 and the spur gear 2 33, thereby reducing the impact of gas on the operation of the motor 31 and the spur gear 1 32 and the spur gear 2 33, and the sealed bearing 29 is mainly used to reduce the entry of gas into the motor 31 and the spur gear 1 32 and the spur gear 2 33.

[0030] Furthermore, a filter screen 30 is fixedly connected to the inner wall of the chamber of the furnace body 2 close to the air inlet pipe 1, and the gas entering the furnace body 2 is filtered by the filter screen 30, thereby further improving the gas filtering effect.

[0031] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A polymer denitrification device for tail gas treatment, comprising: The side wall penetrates a furnace body (2) to which an air inlet pipe (1) is fixed, a support plate (3) fixedly connected inside the furnace body (2), a Roots blower (4), an air-material mixer (5) and a closed-air feeder (6), wherein the Roots blower (4) is connected to the air-material mixer through a pipeline, and the closed-air feeder (6) is connected to the air-material mixer (5) through a pipeline, and is characterized in that: The bottom of the support plate (3) is driven to rotate and connected to a rotating disk (7) with a built-in chamber, the Roots blower (4) is connected to the chamber via a transmission pipe (8), and the rotating disk (7) is fixedly connected to a plurality of air outlet nozzles (9) in communication with the chamber and extending around the circumference thereof; A circulation box (10) is provided on one side of the furnace body (2), and a fan (11) is fixedly connected to the furnace body (2), and the fan (11) is communicated with the circulation box (10) through a conveying pipe (12). A circulation fan (13) is fixedly connected to the circulation box (10), and the circulation fan (13) is communicated with the furnace body (2) through a circulation pipe (14). Solenoid valve (15) is fixedly connected to the conveying pipe (8) and the circulation pipe (14). Solenoid valve (16) is fixedly connected to the air intake pipe (1), and a thermal film sensor (17) is fixedly connected to the air intake pipe (1). A controller (18) is provided on the furnace body (2), and the controller (18) is electrically connected to the thermal film sensor (17). The controller (18) is electrically connected to the solenoid valve (15) and the solenoid valve (16).

2. A polymer denitration device for tail gas treatment according to claim 1, characterized in that: A connecting pipe (19) communicating with the chamber is fixedly connected through the center of the rotating disk (7), the transmission tube (8) is located in the connecting tube (19), and a supporting disk (20) is fixedly connected to the transmission tube (8), and the supporting disk (20) is rotatably connected to the connecting tube (19).

3. A polymer denitration device for tail gas treatment according to claim 2, characterized in that: The top of the connecting pipe (19) is provided with a slot (21), the supporting plate (20) is rotatably connected to the bottom of the slot (21), a limiting block (22) is provided on the connecting pipe (19), a bolt (23) is rotatably connected to the limiting block (22), and one end of the bolt (23) passes through the limiting block (22) and is threadedly connected to the connecting pipe (19).

4. A polymer denitration device for tail gas treatment according to claim 1, characterized in that: The controller (18) comprises a control panel (24), which is fixedly connected to the furnace body (2), the control panel (24) is electrically connected to the thermal film sensor (17), and the control panel (24) is electrically connected to the second solenoid valve (16) and the first solenoid valve (15).

5. A polymer denitration device for tail gas treatment according to claim 4, characterized in that: A second fan (25) is fixedly connected to the top surface of the furnace body (2), an air outlet pipe (26) is fixedly connected to the second fan (25), and a third solenoid valve (27) is fixedly connected to the second air outlet pipe (26). The second fan (25) and the third solenoid valve (27) are electrically connected to the control panel (24).

6. A polymer denitration device for tail gas treatment according to claim 2, characterized in that: A partition plate (28) is fixedly connected between the support plate (3) and the rotating disk (7), and the connecting pipe (19) is rotatably connected to the partition plate (28).

7. A polymer denitration device for tail gas treatment according to claim 6, characterized in that: A sealing bearing (29) is arranged inside the partition (28), and the inner ring of the sealing bearing (29) is connected to the side wall of the connecting pipe (19).

8. The polymer denitration device for tail gas treatment according to claim 1, characterized in that: A filter screen (30) is fixedly connected to the inner wall of the chamber of the furnace body (2) close to the air inlet pipe (1).

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