A tower shaft kiln tail gas treatment device

Abstract

This utility model relates to the field of vertical kiln tail gas treatment technology, and discloses a tower-type vertical kiln tail gas treatment device, including a heat recovery box, a cyclone dust collector, a bag filter, and a desulfurization tower. A cold water circulation pipe is installed on the outside of the heat recovery box, and a spiral duct is installed inside the heat recovery box. Spiral fins are installed on the outside of the spiral duct, and a twisted baffle is installed inside the spiral duct. A motor is fixedly installed on the upper part of the heat recovery box, and a rotating rod is rotatably installed inside the heat recovery box. An agitator is fixedly installed at the lower end of the rotating rod. A first blower is installed between the heat recovery box and the cyclone dust collector. Through the arrangement of the heat recovery box, cyclone dust collector, bag filter, desulfurization tower, spiral duct, spiral fins, twisted baffle, motor, rotating rod, and agitator, efficient recovery of waste heat from the tail gas is achieved, avoiding significant waste of tail gas heat, improving the overall system's energy utilization rate, and enhancing the functionality of the treatment equipment.

Description

Technical Field

[0001] This utility model relates to the field of vertical kiln tail gas treatment technology, specifically a tower-type vertical kiln tail gas treatment device. Background Technology

[0002] A vertical kiln is a vertically arranged thermal processing device mainly used for high-temperature calcination or roasting of solid materials (such as ores, limestone, and refractory materials). It is widely used in metallurgy, building materials, and chemical industries. With its simple structure, low energy consumption, and convenient operation, it is a common heat processing equipment in industrial production. During the high-temperature calcination process, vertical kilns generate a large amount of dust and harmful gases, seriously affecting the environment and the health of operators. Therefore, the exhaust gases must be treated before being released to reduce pollution.

[0003] However, existing exhaust gas treatment equipment generally only removes dust or desulfurizes the exhaust gas, neglecting to recover a large amount of heat from the exhaust gas during the treatment process, resulting in energy waste. At the same time, the existing recovery devices have low recovery efficiency and cannot fully recover the heat energy in the exhaust gas, which also leads to resource waste. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a tower-type vertical kiln tail gas treatment device that can efficiently recover waste heat from the tail gas, avoid a large waste of tail gas heat, improve the overall system's energy utilization rate, and enhance the functionality of the treatment equipment, thus solving the problems mentioned in the background technology.

[0005] (II) Technical Solution To achieve the above objectives, the following technical solution is provided: a tower-type vertical kiln tail gas treatment device, comprising a heat recovery box, a cyclone dust collector, a bag filter, and a desulfurization tower. A cold water circulation pipe is installed on the outside of the heat recovery box, and a spiral duct is installed inside the heat recovery box. Spiral fins are installed on the outside of the spiral duct, and a twisted turbulence belt is installed inside the spiral duct. A motor is fixedly installed on the upper part of the heat recovery box, and a rotating rod is rotatably installed inside the heat recovery box. An agitator is fixedly installed at the lower end of the rotating rod. A first blower is installed between the heat recovery box and the cyclone dust collector.

[0006] Preferably, an air inlet pipe is installed on the outside of the heat recovery box, the upper end of the spiral air pipe is connected to the air inlet pipe, the lower end of the spiral air pipe is connected to the exhaust port of the first blower, and the output end of the motor is fixedly connected to the upper end of the rotating rod.

[0007] Preferably, the outlet of the first blower is connected to a first connecting pipe, the upper end of the first connecting pipe is connected to the interior of the cyclone dust collector, the upper part of the cyclone dust collector is connected to a second connecting pipe, and the lower end of the second connecting pipe is connected to the interior of the bag filter.

[0008] Preferably, a second blower is installed between the bag filter and the desulfurization tower, with the exhaust port of the second blower connected to the bag filter and the exhaust port of the second blower connected to the interior of the desulfurization tower.

[0009] Preferably, a third connecting pipe is connected to the outside of the desulfurization tower, a detection frame is installed at the lower end of the third connecting pipe, an installation groove is opened inside the detection frame, an installation bracket is slidably installed on the inner wall of the installation groove, an air quality detector is fixedly installed on the surface of the installation bracket, and a sealing plate is fixedly installed on the outside of the installation bracket.

[0010] Preferably, a controller and an air quality detector are fixedly installed on the side of the desulfurization tower, and an alarm is installed inside the controller.

[0011] (III) Beneficial Effects Compared with the prior art, this utility model provides a tower-type vertical kiln tail gas treatment device, which has the following beneficial effects: 1. This tower-type vertical kiln tail gas treatment device, through the arrangement of a recovery box, cold water circulation pipe, first blower, cyclone dust collector, bag filter, second blower, desulfurization tower, controller, spiral duct, spiral fins, spiral baffle belt, motor, rotating rod, and stirring plate, achieves efficient recovery of waste heat in the tail gas, avoids a large waste of tail gas heat, improves the overall system energy utilization rate, and enhances the functionality of the treatment equipment.

[0012] 2. This tower-type vertical kiln exhaust gas treatment device, through the coordinated arrangement of a first connecting pipe, a second connecting pipe, a third connecting pipe, a detection frame, a mounting slot, a mounting bracket, an air quality detector, and a sealing plate, enables real-time monitoring of the quality of the purified exhaust gas, effectively improving environmental protection, ensuring emissions meet standards, and reducing the risk of environmental pollution. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the heat recovery box of this utility model; Figure 3 This is a cross-sectional view of the detection frame of this utility model.

[0014] In the diagram: 1. Heat recovery box; 2. Cold water circulation pipe; 3. First blower; 4. Cyclone dust collector; 5. Bag filter; 6. Second blower; 7. Desulfurization tower; 8. Controller; 9. Spiral duct; 10. Spiral fins; 11. Twisted baffle; 12. Motor; 13. Rotating rod; 14. Agitator; 15. Inlet duct; 16. First connecting pipe; 17. Second connecting pipe; 18. Third connecting pipe; 19. Detection frame; 20. Mounting slot; 21. Mounting bracket; 22. Air quality detector; 23. Sealing plate. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments. Obviously, the described embodiments are only some embodiments, not all embodiments. Based on the embodiments described, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection.

[0016] Example 1: Please see Figure 1-3 A tower-type vertical kiln tail gas treatment device includes a heat recovery box 1, a cyclone dust collector 4, a bag filter 5, and a desulfurization tower 7. A cold water circulation pipe 2 is installed on the outside of the heat recovery box 1. A spiral duct 9 is installed inside the heat recovery box 1. Spiral fins 10 are installed on the outside of the spiral duct 9. A spiral turbulence belt 11 is installed inside the spiral duct 9. A motor 12 is fixedly installed on the upper part of the heat recovery box 1. A rotating rod 13 is rotatably installed inside the heat recovery box 1. An agitator 14 is fixedly installed at the lower end of the rotating rod 13. A first blower 3 is installed between the heat recovery box 1 and the cyclone dust collector 4.

[0017] Specifically, the cold water circulation pipe 2 can inject cold water into the heat recovery box 1, and then the heated water will enter the energy storage device through the cold water circulation pipe, thereby realizing the efficient recovery and utilization of heat energy. The spiral duct 9 is evenly wrapped around the inner wall of the heat recovery box 1, while the spiral fins 10 can significantly expand the contact area with water. At the same time, the spiral fins 10 can disturb the water flow, break the "static thermal boundary layer" on the surface of the pipe wall, enhance the turbulence of the water, and improve the heat exchange efficiency. The stirring plate 14 rotates under the drive of the motor 12, further promoting the mixing of the water flow in the heat recovery box 1 and ensuring uniform heat distribution.

[0018] Preferably, an air inlet pipe 15 is installed on the outside of the heat recovery box 1, the upper end of the spiral air pipe 9 is connected to the air inlet pipe 15, the lower end of the spiral air pipe 9 is connected to the exhaust port of the first blower 3, and the output end of the motor 12 is fixedly connected to the upper end of the rotating rod 13.

[0019] Specifically, the flue gas generated by the vertical kiln will enter the spiral air duct 9 through the air inlet pipe 15 under the action of the first blower 3.

[0020] Preferably, the outlet of the first blower 3 is connected to a first connecting pipe 16, the upper end of the first connecting pipe 16 is connected to the interior of the cyclone dust collector 4, the upper part of the cyclone dust collector 4 is connected to a second connecting pipe 17, and the lower end of the second connecting pipe 17 is connected to the interior of the bag filter 5.

[0021] Specifically, the first blower 3 sends the flue gas into the cyclone dust collector 4 through the first connecting pipe 16, where centrifugal force is used to separate the dust. The purified flue gas then enters the bag filter 5 through the second connecting pipe 17 for further filtration of fine particles.

[0022] Preferably, a second blower 6 is installed between the bag filter 5 and the desulfurization tower 7. The exhaust port of the second blower 6 is connected to the bag filter 5, and the exhaust port of the second blower 6 is connected to the interior of the desulfurization tower 7.

[0023] Specifically, the second blower 6 sends the purified flue gas into the desulfurization tower 7, where harmful gases are removed through a chemical reaction.

[0024] Working principle: When the first blower 3 and the second blower 6 are started, the exhaust gas from the vertical kiln enters the spiral duct 9 through the inlet pipe 15. The exhaust gas is disturbed by the spiral turbulence belt 11, which forcibly disturbs the flow of the flue gas, transforming laminar flow into turbulent flow, enhancing the convective heat transfer coefficient between the flue gas and the pipe wall, and also slowing down the flow rate of the exhaust gas, increasing the residence time of the flue gas in the pipe, and enabling more thorough heat exchange with the water in the heat recovery box 1. At the same time, the spiral fins 10 can expand the contact area with the water, further enhancing the heat exchange effect. Then, the motor 12 drives the rotating rod 13 to rotate, which in turn drives the stirring plate 14 to rotate, stirring the water in the heat recovery box 1, further promoting the mixing of the water flow in the heat recovery box 1, ensuring uniform heat distribution. At the same time, after multiple heat exchanges, the temperature of the exhaust gas is significantly reduced, and then it enters the cyclone dust collector 4 for dust separation, thereby achieving efficient recovery of the waste heat in the exhaust gas, avoiding a large amount of waste of exhaust gas heat, and improving the overall energy utilization rate of the system.

[0025] Example 2: Please see Figure 1-3 The desulfurization tower 7 is connected to a third connecting pipe 18 on the outside. A detection frame 19 is installed at the lower end of the third connecting pipe 18. An installation groove 20 is opened inside the detection frame 19. An installation bracket 21 is slidably installed on the inner wall of the installation groove 20. An air quality detector 22 is fixedly installed on the surface of the installation bracket 21. A sealing plate 23 is fixedly installed on the outside of the installation bracket 21.

[0026] Specifically, after the desulfurization tower 7 desulfurizes the exhaust gas, it is discharged through the third connecting pipe 18. The air quality detector 22 in the detection frame 19 monitors the quality of the exhaust gas in real time. A sealed space is formed between the sealing plate 23 and the detection frame 19 to ensure accurate detection data. The air quality detector 22 can be easily replaced through the mounting slot 20 and is easy to maintain. The air quality detector 22 can be selected as model YF-IAQN-V1. The two sides of the sealing plate 23 are fixed to the detection frame 19 with bolts.

[0027] Preferably, a controller 8 and an air quality detector 22 are fixedly installed on the side of the desulfurization tower 7, and an alarm is installed inside the controller 8.

[0028] Specifically, the air quality detector 22 is connected to the control center 25 via the data transmission line 24 to provide real-time feedback of monitoring data.

[0029] Working principle: The exhaust gas passes through the cyclone dust collector 4 and the bag filter 5 for dust filtration, and then undergoes chemical desulfurization in the desulfurization tower 7. The exhaust gas undergoes multiple purification treatments and is then discharged through the third connecting pipe 18. When the exhaust gas passes through the detection frame 19, the air quality detector 22 immediately collects data. If the standard is exceeded, the controller 8 immediately activates the alarm to remind the operator to deal with it in time, ensure that the emission meets the standards, and maintain environmental safety. At the same time, the detector can be quickly replaced by removing the sealing plate 23 to ensure continuous operation of the system and improve maintenance efficiency.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tower-type vertical kiln tail gas treatment device, comprising a heat recovery box (1), a cyclone dust collector (4), a bag filter (5), and a desulfurization tower (7), characterized in that: A cold water circulation pipe (2) is installed on the outside of the heat recovery box (1). A spiral air duct (9) is installed inside the heat recovery box (1). Spiral fins (10) are installed on the outside of the spiral air duct (9). A twisted turbulence belt (11) is installed inside the spiral air duct (9). A motor (12) is fixedly installed on the upper part of the heat recovery box (1). A rotating rod (13) is rotatably installed inside the heat recovery box (1). An agitator (14) is fixedly installed at the lower end of the rotating rod (13). A first blower (3) is installed between the heat recovery box (1) and the cyclone dust collector (4).

2. The tower-type vertical kiln tail gas treatment device according to claim 1, characterized in that: An air inlet pipe (15) is installed on the outside of the heat recovery box (1). The upper end of the spiral air pipe (9) is connected to the air inlet pipe (15). The lower end of the spiral air pipe (9) is connected to the exhaust port of the first blower (3). The output end of the motor (12) is fixedly connected to the upper end of the rotating rod (13).

3. The tower-type vertical kiln tail gas treatment device according to claim 1, characterized in that: The outlet of the first blower (3) is connected to a first connecting pipe (16), the upper end of the first connecting pipe (16) is connected to the interior of the cyclone dust collector (4), the upper part of the cyclone dust collector (4) is connected to a second connecting pipe (17), and the lower end of the second connecting pipe (17) is connected to the interior of the bag filter (5).

4. The tower-type vertical kiln tail gas treatment device according to claim 1, characterized in that: A second blower (6) is installed between the bag filter (5) and the desulfurization tower (7). The exhaust port of the second blower (6) is connected to the bag filter (5), and the exhaust end of the second blower (6) is connected to the interior of the desulfurization tower (7).

5. The tower-type vertical kiln tail gas treatment device according to claim 1, characterized in that: The desulfurization tower (7) is connected to a third connecting pipe (18) on the outside. A detection frame (19) is installed at the lower end of the third connecting pipe (18). An installation groove (20) is opened inside the detection frame (19). An installation bracket (21) is slidably installed on the inner wall of the installation groove (20). An air quality detector (22) is fixedly installed on the surface of the installation bracket (21). A sealing plate (23) is fixedly installed on the outside of the installation bracket (21).

6. The tower-type vertical kiln tail gas treatment device according to claim 1, characterized in that: A controller (8) is fixedly installed on the side of the desulfurization tower (7), the controller (8) and the air quality detector (22) are connected, and an alarm is installed inside the controller (8).

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