Dioxin control device for rotary kiln

Abstract

The utility model discloses a rotary kiln dioxin control device, which relates to the technical field of dioxin control, and comprises a workbench, a hopper is fixedly arranged above the workbench, the lower end of the hopper is fixedly connected with a discharge pipe, a feeding mechanism is arranged in the discharge pipe, and the feeding mechanism comprises a semi-fixed disc and a rotary disc. The semi-fixed disc is fixedly arranged in the discharging pipe, a containing groove matched with the rotary disc is formed in the semi-fixed disc, the rotary disc is rotationally arranged in the containing groove of the semi-fixed disc, a through fan-shaped opening is formed in the rotary disc, a second fixed shaft is fixedly connected to the bottom end of the rotary disc, and a second motor is fixedly arranged on the upper end face of the workbench. A controller is fixedly arranged on the upper end face of the workbench. The problems that in the prior art, dioxin can be generated in the operation processes of hazardous waste incineration, smelting and the like of a rotary kiln, and in the prior art, generation of dioxin cannot be effectively restrained when dioxin is generated are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of dioxin control, in particular to a rotary kiln dioxin control device. Background Art

[0002] The rotary kiln dioxin control device is a device used to control or reduce dioxin emissions. Dioxin is a chemically stable, highly toxic, colorless and odorless substance with a high melting point and is extremely difficult to dissolve in water. It is a fat-soluble substance. The main pollution sources are the chemical metallurgical industry, waste incineration, papermaking, and pesticide industries.

[0003] Rotary kilns are used in industries such as hazardous waste incineration and non-ferrous metal smelting. Rotary kilns produce dioxins during the operation of hazardous waste incineration and smelting. Existing technologies usually convert dioxins in exhaust gas into harmless substances or capture them through high-temperature decomposition, rapid cooling, activated carbon + bag and other flue gas purification devices.

[0004] However, the dioxins produced are generated in the rotary kiln, and current technology cannot effectively inhibit the production of dioxins when they are produced. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a rotary kiln dioxin control device, which solves the problem that dioxins are generated during combustion in the rotary kiln in the prior art, and the current technology cannot effectively inhibit the generation of dioxins when they are generated.

[0006] To achieve the above-mentioned purpose, the utility model proposes a rotary kiln dioxin control device, comprising: a workbench, a hopper is fixedly arranged above the workbench, a discharge pipe is fixedly connected to the lower end of the hopper, a feeding mechanism is arranged inside the discharge pipe, the feeding mechanism comprises a semi-fixed disk and a turntable, the semi-fixed disk is fixedly arranged inside the discharge pipe, a placement groove for matching the turntable is provided inside the semi-fixed disk, the turntable is rotatably arranged in the placement groove of the semi-fixed disk, a through fan-shaped opening is provided on the turntable, a second fixed shaft is fixedly connected to the bottom end of the turntable, a second motor is fixedly arranged on the upper end surface of the workbench, a controller is fixedly arranged on the upper end surface of the workbench, the controller is electrically connected to the second motor, a dioxin online diagnosis device is arranged on one side of the workbench, and the dioxin online diagnosis device is electrically connected to the controller.

[0007] As a further solution of the utility model: a bracket is symmetrically fixedly connected to the bottom end of the workbench, a feed pipe is connected to the upper end of the hopper, a discharge pipe passes through the workbench and is fixedly arranged on the workbench, the interior of the hopper and the discharge pipe is hollow, a first motor is fixedly arranged on the top end of the hopper, an output shaft of the first motor passes through the upper end of the hopper and is fixedly connected to a rotating shaft, and a stirring rod is connected to the outer side of the rotating shaft.

[0008] As a further solution of the utility model: the cross section of the semi-fixed disk in top view is a semicircle.

[0009] As a further solution of the utility model: a fixed box is fixedly arranged inside the discharge pipe, a vertical second fixed shaft is rotatably arranged inside the fixed box, the bottom end of the second fixed shaft is fixedly connected with the second bevel gear, the top end of the second fixed shaft passes through the upper end of the fixed box and the bottom end of the semi-fixed disk, a horizontal first fixed shaft is rotatably arranged inside the fixed box, one end of the first fixed shaft is fixedly connected with the first bevel gear, the first bevel gear is meshed with the second bevel gear, and the other end of the first fixed shaft passes through one side of the fixed box and is fixedly connected with the output shaft of the second motor.

[0010] As a further solution of the utility model: a fan is fixedly installed under the workbench, one end of the fan is connected to a steel pipe, the steel pipe is connected to the discharge pipe, the end of the steel pipe away from the fan is connected to a hose, a valve is provided on the hose, the end of the hose away from the steel pipe is connected to a connecting pipe, and the connecting pipe is made of high temperature resistant material.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the dioxin online diagnostic device monitors the concentration of dioxins in the rotary kiln, and according to the monitored concentration, the dioxin online diagnostic device sends a signal to the controller, and the controller controls the operation of the second motor according to the concentration of dioxins, and sets the operation time of the feeding mechanism, and the feeding system feeds the amount of dioxin inhibitor according to the concentration of dioxins, so that the generation of dioxins is effectively inhibited when they are generated. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is an enlarged view of part A of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the rotating disk and the semi-fixed disk of the utility model;

[0015] Figure 4 It is an exploded view of the turntable and the semi-fixed disk of the utility model;

[0016] Figure 5 The utility model is a process flow chart of the rotary kiln.

[0017] In the figure: 1. hopper; 2. rotating shaft; 3. stirring rod; 4. feeding pipe; 5. first motor; 6. working table; 7. second motor; 8. hose; 9. bracket; 10. discharging pipe; 11. steel pipe; 12. fan; 13. first bevel gear; 14. fixed box; 15. second bevel gear; 16. second fixed shaft; 17. semi-fixed disk; 18. rotating disk; 19. fan-shaped mouth; 20. controller; 21. first fixed shaft. DETAILED DESCRIPTION

[0018] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] like Figure 1-4 As shown, a rotary kiln dioxin control device includes: a workbench 6, a bracket 9 is symmetrically fixedly connected to the bottom end of the workbench 6, a hopper 1 is fixedly arranged above the workbench 6, a feed pipe 4 is connected to the upper end of the hopper 1, and a discharge pipe 10 is fixedly connected to the lower end of the hopper 1, and the discharge pipe 10 passes through the workbench 6 and is fixedly arranged on the workbench 6.

[0020] The interior of the hopper 1 and the discharge pipe 10 are hollow, and a first motor 5 is fixedly provided at the top of the hopper 1. The output shaft of the first motor 5 passes through the upper end of the hopper 1 and is fixedly connected to the rotating shaft 2. The outer side of the rotating shaft 2 is connected to a stirring rod 3.

[0021] Open the feed pipe 4, add a proper amount of dioxin inhibitor into the hopper 1 through the feed pipe 4, start the first motor 5, the output shaft of the first motor 5 drives the rotating shaft 2 and the stirring rod 3 to rotate, and the stirring rod 3 stirs the dioxin inhibitor.

[0022] A feeding mechanism is arranged inside the discharge pipe 10, and the feeding mechanism includes a semi-fixed disk 17 and a turntable 18. The semi-fixed disk 17 is fixedly arranged inside the discharge pipe 10, and the top cross-section of the semi-fixed disk 17 is a semicircle. A placement groove for matching the turntable 18 is opened inside the semi-fixed disk 17, and the turntable 18 is rotatably arranged in the placement groove of the semi-fixed disk 17. A through fan-shaped opening 19 is opened on the turntable 18.

[0023] A fixed box 14 is fixedly arranged inside the discharge pipe 10, and a vertical second fixed shaft 16 is rotatably arranged inside the fixed box 14. The bottom end of the second fixed shaft 16 is fixedly connected to a second bevel gear 15. The top end of the second fixed shaft 16 passes through the upper end of the fixed box 14, the bottom end of the semi-fixed disk 17 and is fixedly connected to the bottom of the turntable 18, so that the turntable 18 can rotate inside the semi-fixed disk 17.

[0024] A horizontal first fixed shaft 21 is rotatably provided inside the fixed box 14, one end of the first fixed shaft 21 is fixedly connected to the first bevel gear 13, the first bevel gear 13 is meshedly connected to the second bevel gear 15, the other end of the first fixed shaft 21 passes through one side of the fixed box 14 and is fixedly connected to the output shaft of the second motor 7, and the second motor 7 is fixedly provided on the upper end surface of the workbench 6.

[0025] A controller 20 is fixedly provided on the upper end surface of the workbench 6, and the controller 20 is electrically connected to the second motor 7. A dioxin online diagnostic device (this device has been disclosed in the patent with publication number CN212904790U) is provided on one side of the workbench 6. The dioxin online diagnostic device is used to monitor the concentration of dioxins in the rotary kiln, and the dioxin online diagnostic device is electrically connected to the controller 20.

[0026] A fan 12 is fixedly arranged below the workbench 6, one end of the fan 12 is connected to a steel pipe 11, the steel pipe 11 is communicated with a discharge pipe 10, one end of the steel pipe 11 away from the fan 12 is connected to a hose 8, a valve is arranged on the hose 8, one end of the hose 8 away from the steel pipe 11 is connected to a connecting pipe, the connecting pipe is installed in the rotary kiln, and the connecting pipe is made of high temperature resistant material.

[0027] Working principle:

[0028] The dioxin online diagnostic device is turned on by the controller 20. The dioxin online diagnostic device monitors the concentration of dioxins in the rotary kiln. According to the monitored concentration, the dioxin online diagnostic device sends a signal to the controller 20. The controller 20 controls the operation of the second motor 7 according to the concentration of dioxins and sets the operation time of the feeding mechanism.

[0029] In the initial state, the fan-shaped opening 19 of the rotating disk 18 is in the placement groove of the semi-fixed disk 17, the output shaft of the second motor 7 drives the first fixed shaft 21 and the first bevel gear 13 to rotate, and the first bevel gear 13 drives the second bevel gear 15, the second fixed shaft 16, and the rotating disk 18 to rotate, so that the fan-shaped opening 19 is completely turned to the outside of the semi-fixed disk 17, and the dioxin inhibitor enters the steel pipe 11 through the fan-shaped opening 19. When the running time set by the feeding mechanism is reached, the controller 20 controls the second motor 7 to rotate, so that the fan-shaped opening 19 re-enters the placement groove of the semi-fixed disk 17, and the feeding mechanism is closed;

[0030] The valve on the hose 8 is opened, and the fan 12 is started. The wind generated by the fan 12 blows the dioxin inhibitor inside the steel pipe 11 into the hose 8, the connecting pipe, and the rotary kiln in sequence.

[0031] according to Figure 5 In the process flow of the rotary kiln, the dioxin inhibitor is sprayed into the kiln head and then gasified and mixed. It follows the flow of flue gas and has an inhibitory effect on dioxins from the high-temperature section of the kiln head to the bag-type dust collector. In the exhaust gas treatment stage, the dioxin adsorbent injection equipment is installed to spray the adsorbent into the pipeline in front of the bag-type dust collector, mix with the flue gas and enter the bag-type dust collector for adsorption reaction.

[0032] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A rotary kiln dioxin control device, characterized in that: include: A workbench (6) is provided with a hopper (1) fixedly disposed above the workbench (6), a discharge pipe (10) is fixedly connected to the lower end of the hopper (1), a feeding mechanism is disposed inside the discharge pipe (10), and the feeding mechanism comprises a semi-fixed disc (17) and a rotating disc (18), the semi-fixed disc (17) is fixedly disposed inside the discharge pipe (10), a placement groove for fitting the rotating disc (18) is provided inside the semi-fixed disc (17), and the rotating disc (18) is rotatably disposed on the semi-fixed disc (17) A through fan-shaped opening (19) is provided on the rotating disk (18) in the placement groove, a second fixed shaft (16) is fixedly connected to the bottom end of the rotating disk (18), a second motor (7) is fixedly arranged on the upper end surface of the workbench (6), a controller (20) is fixedly arranged on the upper end surface of the workbench (6), the controller (20) is electrically connected to the second motor (7), and a dioxin online diagnostic device is arranged on one side of the workbench (6), and the dioxin online diagnostic device is electrically connected to the controller (20).

2. A rotary kiln dioxin control device according to claim 1, characterized in that: The bottom end of the workbench (6) is symmetrically fixedly connected to a bracket (9), the upper end of the hopper (1) is connected to a feed pipe (4), a discharge pipe (10) passes through the workbench (6) and is fixedly arranged on the workbench (6), the interior of the hopper (1) and the discharge pipe (10) are hollow, a first motor (5) is fixedly arranged at the top end of the hopper (1), an output shaft of the first motor (5) passes through the upper end of the hopper (1) and is fixedly connected to a rotating shaft (2), and a stirring rod (3) is connected to the outer side of the rotating shaft (2).

3. A rotary kiln dioxin control device according to claim 1, characterized in that: The cross section of the semi-fixed disk (17) when viewed from above is a semicircle.

4. A rotary kiln dioxin control device according to claim 1, characterized in that: A fixed box (14) is fixedly arranged inside the discharge pipe (10), a vertical second fixed shaft (16) is rotatably arranged inside the fixed box (14), the bottom end of the second fixed shaft (16) is fixedly connected to the second bevel gear (15), the top end of the second fixed shaft (16) passes through the upper end of the fixed box (14) and the bottom end of the semi-fixed disk (17), a horizontal first fixed shaft (21) is rotatably arranged inside the fixed box (14), one end of the first fixed shaft (21) is fixedly connected to the first bevel gear (13), the first bevel gear (13) is meshedly connected with the second bevel gear (15), the other end of the first fixed shaft (21) passes through one side of the fixed box (14) and is fixedly connected to the output shaft of the second motor (7).

5. A rotary kiln dioxin control device according to claim 1, characterized in that: A fan (12) is fixedly arranged below the workbench (6), one end of the fan (12) is connected to a steel pipe (11), the steel pipe (11) is communicated with a discharge pipe (10), one end of the steel pipe (11) away from the fan (12) is connected to a hose (8), a valve is arranged on the hose (8), and one end of the hose (8) away from the steel pipe (11) is connected to a connecting pipe, which is made of high temperature resistant material.

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