Dry deacidification flue with high-efficiency mixing function

Abstract

A dry method deacidification flue with high-efficiency mixing function, including flue body, lime injection device, sealing device and controller, the sealing device includes sealing plate, sliding groove, sliding block and first hydraulic cylinder, the sealing plate is equipped with air vent, the air vent is communicated with sliding groove, when the sliding block is in initial state, the air vent is completely covered by the sliding block, when the sliding block slides a certain distance, the air vent is not blocked by the sliding block, the sealing plate divides the flue body into first flue-in area and second flue-in area, the lime injection device includes several nozzle elements connected with the flue body, connecting pipe connected with the nozzle element, pressurizing pump connected with the connecting pipe and storage tank connected with the connecting pipe, the flue body is equipped with air inlet, the air inlet is located in the first flue-in area, the nozzle element is located in the first flue-in area, the controller is electrically connected with the first hydraulic cylinder and the pressurizing pump respectively.

Description

Technical Field

[0001] This utility model relates to the technical field of waste incineration equipment, and in particular to a dry deacidification flue with efficient mixing function. Background Technology

[0002] After waste incineration, the flue gas produced needs to be purified to meet purification standards. Dry desulfurization is a commonly used flue gas purification technology. However, this method has the following drawbacks: Dry desulfurization involves spraying baking soda or lime powder into the flue gas inlet of the neutralization tower, where it reacts rapidly with acidic substances in the flue gas to achieve desulfurization and desulfurization. However, the short reaction time between the flue gas and lime reduces the desulfurization efficiency, thus affecting the flue gas purification effect. Existing flue gas systems typically modify the flue gas duct shape, influencing the flue gas flow rate by changing the duct diameter to increase the reaction time between the flue gas and lime. While this has some effect, the mixing effect between the flue gas and lime remains poor. Therefore, a new flue gas duct structure is needed to improve the mixing efficiency between the flue gas and lime. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a dry deacidification flue with efficient mixing function that can improve flue gas mixing efficiency and deacidification effect.

[0004] The technical solution of this utility model is as follows: A dry deacidification flue with high-efficiency mixing function includes a flue body, a lime injection device connected to the flue body, a sealing device connected to the flue body, and a controller. The sealing device includes a sealing plate fixedly connected to the flue body, a sliding groove provided on the sealing plate, a sliding block slidably connected to the sliding groove, and a first hydraulic cylinder for driving the sliding block to move. The sealing plate is also provided with a vent, which communicates with the sliding groove. When the sliding block is in the initial state, the vent is completely covered by the sliding block. When the sliding block slides a certain distance, the vent is not blocked by the sliding block. The sealing plate divides the flue body into a first smoke inlet zone and a second smoke inlet zone. The lime injection device includes several nozzle elements connected to the flue body, a connecting pipe connected to the nozzle elements, a pressure pump connected to the connecting pipe, and a storage tank connected to the connecting pipe. The flue body is provided with an air inlet, which is located in the first smoke inlet zone. The nozzle elements are located in the first smoke inlet zone. The controller is electrically connected to the first hydraulic cylinder and the pressure pump, respectively.

[0005] Using the above technical solution, firstly, the flue gas is discharged into the flue body through the flue inlet. Then, the controller controls the pressurization pump to provide pressure to transfer the lime in the storage tank to the nozzle element through the connecting pipe. The lime is then sprayed into the first flue gas inlet area through the nozzle element. After the lime and flue gas are fully mixed, the controller controls the first hydraulic cylinder to drive the sliding block to slide a certain distance along the sliding groove, thereby causing the sliding block to disengage from the vent, allowing the purified flue gas to be discharged from the vent. Compared with traditional flues, this can greatly increase the reaction time between the flue gas and lime, thereby improving the deacidification effect of the flue gas.

[0006] A further feature of this invention is that a sealing gasket is provided on the outer surface of the sliding block, and the shape of the outer surface of the sealing gasket is adapted to the shape of the inner wall of the sliding groove.

[0007] By adopting the above technical solution, since the sliding block surface is equipped with a sealing gasket, the overall sealing performance of the first smoke inlet zone can be greatly improved when the sliding block covers the air inlet, thereby further improving the flue gas deacidification effect and flue gas deacidification efficiency.

[0008] A further feature of this invention is that the sealing plate has a plurality of connection holes, the number of which is the same as the number of nozzle elements, and the nozzle elements are connected to the connection holes.

[0009] Using the above technical solution, since the sealing plate is provided with several connection holes and the nozzle element is connected to the connection holes, the lime is sprayed into the first smoke inlet zone from below the smoke inlet. The airflow brought by the lime feeding will further prolong the residence time of the flue gas in the first smoke inlet zone, thereby further improving the deacidification effect of the flue gas.

[0010] A further feature of this invention is that an electromagnetic pulse switch is provided on the connecting pipe, and the electromagnetic pulse switch is electrically connected to the controller.

[0011] By adopting the above technical solution, since the connecting pipe is equipped with an electromagnetic pulse switch, the controller controls the electromagnetic pulse switch to continuously switch the connecting pipe between the connected and closed states. This ensures that there is a certain time interval each time the lime is sprayed from the nozzle element, which can further improve the mixing efficiency of flue gas and lime and improve the flue gas purification effect. Attached Figure Description

[0012] Appendix Figure 1 This is a cross-sectional view of a dry deacidification flue with efficient mixing function according to a specific embodiment of the present invention.

[0013] 1-Flue body, 2-Lime injection device, 3-Sealing device, 4-Controller, 5-Sealing plate, 6-Sliding groove, 7-Sliding block, 8-First hydraulic cylinder, 9-Ventilation port, 10-First smoke inlet zone, 11-Second smoke inlet zone, 12-Nozzle element, 13-Connecting pipe, 14-Pressure pump, 15-Storage tank, 16-Air inlet, 17-Sealing gasket, 18-Connecting hole, 19-Electromagnetic pulse switch. Detailed Implementation

[0014] like Figure 1 As shown, a dry deacidification flue with high-efficiency mixing function includes a flue body 1, a lime injection device 2 connected to the flue body 1, a sealing device 3 connected to the flue body 1, and a controller 4. The sealing device 3 includes a sealing plate 5 fixedly connected to the flue body 1, a sliding groove 6 provided on the sealing plate 5, a sliding block 7 slidably connected to the sliding groove 6, and a first hydraulic cylinder 8 for driving the sliding block 7 to move. The sealing plate 5 is also provided with a vent 9, which communicates with the sliding groove 6. When the sliding block 7 is in the initial state, the vent 9 is completely covered by the sliding block 7. When the sliding block 7 is in the initial state, the vent 9 is completely covered by the sliding block 7. After sliding a certain distance, the vent 9 is not blocked by the sliding block 7. The sealing plate 5 divides the flue body 1 into a first smoke inlet zone 10 and a second smoke inlet zone 11. The lime spraying device 2 includes a plurality of nozzle elements 12 connected to the flue body 1, a connecting pipe 13 connected to the nozzle elements 12, a pressure pump 14 connected to the connecting pipe 13, and a storage tank 15 connected to the connecting pipe 13. The flue body 1 is provided with an air inlet 16, which is located in the first smoke inlet zone 10. The nozzle elements 12 are located in the first smoke inlet zone 10. The controller 4 is electrically connected to the first hydraulic cylinder 8 and the pressure pump 14 respectively.

[0015] First, the flue gas is discharged into the flue body 1 through the flue inlet. Then, the controller 4 controls the pressurization pump 14 to provide pressure to transfer the lime in the storage tank 15 to the nozzle element 12 through the connecting pipe 13. The lime is then sprayed into the first flue gas inlet zone 10 through the nozzle element 12. After the lime and flue gas are fully mixed, the controller 4 controls the first hydraulic cylinder 8 to drive the sliding block 7 to slide a certain distance along the sliding groove 6, thereby causing the sliding block 7 to disengage from the vent 9, allowing the purified flue gas to be discharged from the vent 9. Compared with the traditional flue, this can greatly increase the reaction time between the flue gas and the lime, thereby improving the deacidification effect of the flue gas.

[0016] The outer surface of the sliding block 7 is provided with a sealing gasket 17, and the shape of the outer surface of the sealing gasket 17 is adapted to the shape of the inner wall of the sliding groove 6.

[0017] Since the sliding block 7 is provided with a sealing gasket 17, the overall sealing performance of the first smoke inlet zone 10 can be greatly improved when the sliding block 7 covers the air inlet 9, thereby further improving the flue gas deacidification effect and flue gas deacidification efficiency.

[0018] The sealing plate 5 is provided with a plurality of connection holes 18, the number of connection holes 18 being the same as the number of nozzle elements 12, and the nozzle elements 12 being connected to the connection holes 18.

[0019] Since the sealing plate 5 is provided with several connection holes 18, and the nozzle element 12 is connected to the connection holes 18, the lime is sprayed into the first smoke inlet zone 10 from below the smoke inlet. The airflow brought by the lime feeding will further prolong the residence time of the flue gas in the first smoke inlet zone 10, thereby further improving the deacidification effect of the flue gas.

[0020] An electromagnetic pulse switch 19 is provided on the connecting pipe 13, and the electromagnetic pulse switch 19 is electrically connected to the controller 4.

[0021] Since the connecting pipe 13 is equipped with an electromagnetic pulse switch 19, the controller 4 controls the electromagnetic pulse switch to continuously switch the connecting pipe 13 between the connected state and the closed state, so that there is a certain time interval each time the lime is sprayed from the nozzle element 12. This can further improve the mixing efficiency of flue gas and lime and improve the flue gas purification effect.

Claims

1. A dry deacidification flue with high-efficiency mixing function, characterized in that: The system includes a flue body, a lime injection device connected to the flue body, a sealing device connected to the flue body, and a controller. The sealing device includes a sealing plate fixedly connected to the flue body, a sliding groove on the sealing plate, a sliding block slidably connected to the sliding groove, and a first hydraulic cylinder for driving the sliding block. The sealing plate also has a vent, which communicates with the sliding groove. When the sliding block is in its initial state, the vent is completely covered by the sliding block. When the sliding block slides a certain distance, the vent is not blocked by the sliding block. The sealing plate divides the flue body into a first smoke inlet zone and a second smoke inlet zone. The lime injection device includes several nozzle elements connected to the flue body, a connecting pipe connected to the nozzle elements, a pressure pump connected to the connecting pipe, and a storage tank connected to the connecting pipe. The flue body has an air inlet located in the first smoke inlet zone, and the nozzle elements are located in the first smoke inlet zone. The controller is electrically connected to the first hydraulic cylinder and the pressure pump, respectively.

2. A dry deacidification flue with high-efficiency mixing function according to claim 1, characterized in that: The outer surface of the sliding block is provided with a sealing gasket, and the shape of the outer surface of the sealing gasket is adapted to the shape of the inner wall of the sliding groove.

3. A dry deacidification flue with high-efficiency mixing function according to claim 1, characterized in that: The sealing plate is provided with a number of connection holes, the number of which is the same as the number of nozzle elements, and the nozzle elements are connected to the connection holes.

4. A dry deacidification flue with high-efficiency mixing function according to claim 1, characterized in that: An electromagnetic pulse switch is provided on the connecting pipe, and the electromagnetic pulse switch is electrically connected to the controller.

Images