A dioxin control device for oxygen-enriched smelting furnace

Abstract

The utility model discloses a dioxin control device for an oxygen-enriched smelting furnace, which relates to the technical field of environmental protection. The utility model comprises a workbench, on which an inhibitor storage bin is fixedly installed, in which a dioxin inhibitor is stored, and a Roots blower is fixedly connected to the inhibitor storage bin. An oxygen-enriched smelting furnace is arranged on the side of the workbench, and an air blast pipeline is fixedly installed on the air inlet of the oxygen-enriched smelting furnace. The inhibitor storage bin is fixedly connected to the air blast pipeline. The adding rate of the inhibitor is controlled by the cooperation of a concentration monitoring device, a controller and a speed regulator. An adsorbent dosing device is installed in front of a bag pipe in an exhaust gas treatment stage, and mixed with flue gas to enter a bag filter for adsorption reaction, thereby effectively controlling the emission concentration of dioxins to ensure that the dioxin emission meets the standard. A new technical path is provided for the standard emission of dioxins in an oxygen-enriched smelting furnace.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection, in particular to a dioxin control device for an oxygen-enriched smelting furnace. Background Art

[0002] Dioxins are toxic organic substances that are harmful to humans and the environment. During the smelting process, especially the waste smelting process, dioxins may be generated and emitted into the atmosphere. In order to protect the environment and human health, measures need to be taken to control and reduce dioxin emissions.

[0003] The patent with the authorization announcement number CN219571922U discloses a method of grafting onto the existing household waste.

[0004] The dioxin emission control device for solid waste incineration flue gas of a garbage incineration power plant includes a feeder, one end of which is connected to a silo, and the other end of which is connected to a combustion chamber; the feeder includes a shell, the shell is provided with a feed port and a discharge port, the feed port and the discharge port are respectively connected to the silo and the combustion chamber, a rotating shaft is provided in the shell, the rotating shaft is provided with spiral blades, one end of the rotating shaft is connected to a driving motor, the driving motor is connected to a frequency conversion circuit, the frequency conversion circuit is connected to a controller, the controller is connected to two concentration detectors, and the two concentration detectors are used to detect the dioxin concentration in the exhaust gas of the combustion chamber.

[0005] When the above setting detects that the dioxin concentration in the flue gas exceeds the emission standard, the dioxin concentration is reduced by reducing the feeding speed of the feeder, which affects the work efficiency to a certain extent. Utility Model Content

[0006] 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 dioxin control device for an oxygen-enriched smelting furnace, which solves the problem that the prior art reduces the dioxin concentration by reducing the feed rate of the feeder, which affects the overall working efficiency of the device to a certain extent.

[0007] To achieve the above-mentioned purpose, the utility model proposes a dioxin control device for an oxygen-enriched smelting furnace, comprising a workbench, an inhibitor storage bin is fixedly installed on the workbench, and dioxin inhibitors are stored in the inhibitor storage bin; a Roots blower is fixedly installed on the workbench, and an air outlet pipe of the Roots blower is fixedly connected with a ventilation plate, and the ventilation plate is fixedly connected to the port of the inhibitor storage bin; an oxygen-enriched smelting furnace is arranged on the side of the workbench, and an air blast pipeline is fixedly installed on the air inlet of the oxygen-enriched smelting furnace, and the port of the inhibitor storage bin extends downward and is fixedly connected to the air blast pipeline; a speed regulator is fixedly connected to the air outlet of the Roots blower, and a regulating valve is arranged on the speed regulator; a controller is fixedly installed on the workbench, and an adjusting rod is rotatably connected to the upper end of the controller, and a connecting rod is fixedly installed between the adjusting rod and the regulating valve.

[0008] As a further solution of the utility model: a concentration monitoring device is fixedly installed near the oxygen-enriched smelting furnace, and a conducting wire is arranged on one side of the concentration monitoring device.

[0009] As a further solution of the utility model: one end of the wire is fixedly connected to the concentration monitoring device, and the other end is fixedly connected to the controller, and the concentration monitoring device and the controller are electrically connected through the wire.

[0010] As a further solution of the utility model: the oxygen-enriched smelting furnace is provided with a gas outlet.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. By arranging concentration monitoring equipment, controller and speed regulator on both sides of the oxygen-enriched smelting furnace, the inhibitor in the inhibitor storage bin flows along the blast pipeline to the oxygen-enriched smelting furnace, reacts with the dioxins generated in the oxygen-enriched smelting furnace, and the gas after the reaction is discharged to the tail gas treatment equipment. The concentration monitoring equipment and the controller are electrically connected through a wire. The concentration monitoring equipment monitors the concentration of dioxins after the reaction. When the dioxin concentration exceeds the warning concentration, the data conversion module gives a current signal and transmits it to the controller. The controller swings the regulating rod to a certain amplitude to drive the regulating valve to open and close, thereby realizing the adjustment of the wind speed of the Roots blower, thereby realizing the adjustment of the dioxin concentration in the oxygen-enriched smelting furnace by changing the feeding rate of the inhibitor.

[0013] 2. By spraying dioxin inhibitors into the blast pipe and then evenly entering the furnace of the oxygen-enriched smelting furnace, the amount of dioxin generated can be effectively reduced. In the exhaust gas treatment stage, an adsorbent injection device is installed to spray the adsorbent into the pipe before the bag, and mix it with the flue gas into the bag dust collector for adsorption reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1This is a three-dimensional structural diagram of a dioxin control device for an oxygen-enriched smelting furnace according to the utility model;

[0015] Figure 2 This is a top view of a dioxin control device for an oxygen-enriched smelting furnace according to the utility model;

[0016] Figure 3 This utility model is a dioxin control device for an oxygen-enriched smelting furnace Figure 2 Enlarged view of point A.

[0017] In the figure: 1. workbench; 2. inhibitor storage bin; 3. Roots blower; 4. ventilation plate; 5. blast pipe; 6. oxygen-enriched smelting furnace; 7. concentration monitoring equipment; 8. wire; 11. air outlet; 13. controller; 14. speed regulator; 15. adjusting rod; 16. connecting rod; 17. regulating valve. 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 1-3 As shown, a dioxin control device for an oxygen-enriched smelting furnace comprises a workbench 1, an inhibitor storage bin 2 is fixedly mounted on the workbench 1, a dioxin inhibitor is stored in the inhibitor storage bin 2, a Roots blower 3 is fixedly mounted on the workbench 1, an air outlet pipe of the Roots blower 3 is fixedly connected to a ventilation plate 4, the ventilation plate 4 is fixedly connected to the port of the inhibitor storage bin 2, and the unloading rate of the inhibitor storage bin 2 can be adjusted by starting the Roots blower 3; an oxygen-enriched smelting furnace 6 is arranged on the side of the workbench 1, and a Roots blower 3 is fixedly mounted on the air inlet of the oxygen-enriched smelting furnace 6. A blast pipeline 5 is fixedly installed, the port of the inhibitor storage bin 2 extends downward and is fixedly connected to the blast pipeline 5, the air outlet of the Roots blower 3 is fixedly connected to a speed regulator 14, and a regulating valve 17 is arranged on the speed regulator 14. By adjusting the opening of the regulating valve 17, the speed of the Roots blower 3 can be changed, thereby adjusting the unloading rate of the inhibitor storage bin 2. A controller 13 is fixedly installed on the workbench 1, and an adjusting rod 15 is rotatably connected to the upper portion of the controller 13, and a connecting rod 16 is fixedly installed between the adjusting rod 15 and the regulating valve 17;

[0020] As an implementation method in this embodiment, a gas outlet 11 is provided on one side of the oxygen-enriched smelting furnace 6, and the tail gas treatment device is connected through the gas outlet 11 to perform tail gas treatment; a concentration monitoring device 7 is fixedly installed near the oxygen-enriched smelting furnace 6, and a wire 8 is provided on one side of the concentration monitoring device 7, one end of the wire 8 is fixedly connected to the concentration monitoring device 7, and the other end is fixedly connected to the controller 13, and the concentration monitoring device 7 is electrically connected to the controller 13 through the wire 8. The inhibitor in the inhibitor storage bin 2 flows to the oxygen-enriched smelting furnace 6 along the blast pipeline 5, and reacts with the dioxins in the oxygen-enriched smelting furnace 6. The reacted gas flows to the tail gas treatment device through the gas outlet 11, and the concentration The monitoring device 7 monitors the concentration of dioxins after the reaction. When the concentration of dioxins exceeds the warning concentration, the data conversion module gives a current signal and transmits it to the controller 13. The controller 13 swings the regulating rod 15 to a certain amplitude, driving the regulating valve 17 to open and close, thereby adjusting the wind speed of the Roots blower 3, thereby changing the feeding rate of the inhibitor to adjust the concentration of dioxins in the oxygen-enriched smelting furnace 6. In the tail gas treatment stage, the adsorbent injection equipment is installed to spray the adsorbent into the pipeline before the bag, mix with the flue gas and enter the bag dust collector for adsorption reaction. The adsorbent is 200 mesh powder, which is gasified and mixed after injection to adsorb dioxins, thereby increasing the overall stability of the equipment in removing dioxins.

[0021] The concentration monitoring device 7 is a technology applied for by our company, and its working principle can be found in the utility model patent with authorization announcement number CN212904790U.

[0022] Working principle:

[0023] The door of the inhibitor storage bin 2 is opened to discharge the material. The inhibitor in the inhibitor storage bin 2 flows along the blast pipe 5 to the oxygen-enriched smelting furnace 6, and reacts with the dioxin in the oxygen-enriched smelting furnace 6. The gas after the reaction is discharged to the gas outlet 11 and flows to the tail gas treatment device. The concentration monitoring device 7 is electrically connected to the controller 13 through the wire 8. The concentration monitoring device 7 monitors the dioxin concentration after the reaction. When the dioxin concentration exceeds the warning concentration, the data conversion module gives a current signal and transmits it to the controller 13. The controller 13 swings a certain amplitude through the adjustment rod 15 to drive the regulating valve 17 to open and close, thereby realizing the adjustment of the wind speed of the Roots blower 3, thereby changing the discharge rate of the inhibitor to adjust the concentration of dioxins in the oxygen-enriched smelting furnace 6. In the tail gas treatment stage, the adsorbent injection device is installed to spray the adsorbent into the front pipe of the bag, and mix with the flue gas to enter the bag dust collector for adsorption reaction. The adsorbent is 200 mesh powder. After spraying, it is gasified and mixed to adsorb dioxins, thereby increasing the overall stability of the equipment in removing dioxins.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it 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, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] 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 dioxin control device for an oxygen-enriched smelting furnace, characterized in that: The invention comprises a workbench (1), wherein an inhibitor storage bin (2) is fixedly mounted on the workbench (1), wherein a dioxin inhibitor is stored in the inhibitor storage bin (2), wherein a Roots blower (3) is fixedly mounted on the workbench (1), wherein an air outlet pipe of the Roots blower (3) is fixedly connected to a ventilation plate (4), wherein the ventilation plate (4) is fixedly connected to the opening of the inhibitor storage bin (2), wherein an oxygen-enriched smelting furnace (6) is arranged on the side of the workbench (1), wherein an oxygen-enriched smelting furnace (6) is fixedly mounted on the air inlet of the oxygen-enriched smelting furnace (6) A blast pipeline (5) is provided, the port of the inhibitor storage bin (2) extends downward and is fixedly connected to the blast pipeline (5), the air outlet of the Roots blower (3) is fixedly connected to a speed regulator (14), a regulating valve (17) is provided on the speed regulator (14), a controller (13) is fixedly installed on the workbench (1), an adjusting rod (15) is rotatably connected to the upper portion of the controller (13), and a connecting rod (16) is fixedly installed between the adjusting rod (15) and the regulating valve (17).

2. The dioxin control device for an oxygen-enriched smelting furnace according to claim 1, characterized in that: A concentration monitoring device (7) is fixedly installed near the oxygen-enriched smelting furnace (6), and a conducting wire (8) is provided on one side of the concentration monitoring device (7).

3. The dioxin control device for an oxygen-enriched smelting furnace according to claim 2, characterized in that: One end of the wire (8) is fixedly connected to the concentration monitoring device (7), and the other end is fixedly connected to the controller (13); the concentration monitoring device (7) and the controller (13) are electrically connected via the wire (8).

4. The dioxin control device for an oxygen-enriched smelting furnace according to claim 1, characterized in that: The oxygen-enriched smelting furnace (6) is provided with a gas outlet (11).

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