An ore metallurgical sintering furnace

Abstract

The utility model discloses a kind of ore metallurgical sintering furnaces, it is related to flue gas purification and environmental protection processing technical field.The ore metallurgical sintering furnace, including support pier, plasma reactor, activated carbon adsorption tower etc., support pier top is connected plasma reactor through neoprene plate, shock-absorbing support effect is played, there are three groups of radial, six groups of axial distribution discharge electrode and ground electrode plate in plasma reactor, flue gas pollutant can be efficiently decomposed, its front is equipped with reactor observation port for easy monitoring, activated carbon adsorption tower is communicated with plasma reactor by gas outlet pipe, front is equipped with five observation ports, top has detector real-time monitoring emission, bottom skirt support, bottom end is connected spiral conveyor through flange and recycles waste activated carbon, the ore metallurgical sintering furnace is treated by plasma decomposition and activated carbon adsorption cooperation, improve pollutant removal efficiency, stable operation, realize resource circulation, meet environmental protection requirement.

Description

Technical Field

[0001] This utility model relates to the field of flue gas purification and environmental protection technology, and in particular to an ore metallurgical sintering furnace. Background Technology

[0002] The sintering process in ore metallurgy generates a large amount of flue gas containing pollutants, including sulfur oxides (SO2) and nitrogen oxides (NOx). x Pollutants such as particulate matter, dust, and volatile organic compounds (VOCs) can cause serious environmental pollution if directly emitted into the atmosphere. Sulfur oxides and nitrogen oxides are the main causes of acid rain, which can damage soil and vegetation and corrode buildings. Particulate matter can lead to a decline in air quality and harm the health of the human respiratory system. Volatile organic compounds may participate in photochemical reactions to form photochemical smog, posing multiple threats to the ecological environment and human health. To address the aforementioned pollution problems, various flue gas treatment devices and methods have emerged in the existing technology. For example, wet desulfurization technology is used to remove sulfur oxides, but its effect on nitrogen oxides is limited. Selective catalytic reduction (SCR) technology can effectively remove nitrogen oxides, but the equipment cost is high and it requires the consumption of reducing agents during operation. Traditional bag filters or electrostatic precipitators can remove most dust, but their purification effect on fine particulate matter and volatile organic compounds is not good. In addition, existing treatment systems often suffer from poor coordination among various devices and low treatment efficiency. In some systems, the connection between the plasma reactor and the adsorption equipment is unreasonable, resulting in insufficient residence time of flue gas during treatment and incomplete decomposition and adsorption of pollutants. At the same time, the vibration and noise problems during equipment operation are also quite prominent, which not only affect the stability and service life of the equipment, but also cause secondary interference to the surrounding environment. Moreover, there is a lack of effective recycling and treatment mechanisms for waste adsorption materials after adsorption saturation, making it difficult to achieve resource recycling and failing to meet the requirements of green environmental protection and sustainable development. Utility Model Content

[0003] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide an ore metallurgical sintering furnace that can solve the above-mentioned problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a sintering furnace for ore metallurgy, comprising a support pier, a neoprene rubber plate fixedly connected to the top of the support pier, a plasma reactor fixedly connected to the top of the neoprene rubber plate, terminal boxes fixedly connected to both ends of the top of the plasma reactor, an air inlet flange fixedly connected to the front end of the plasma reactor, an air inlet pipe fixedly connected to the air inlet flange, a reactor observation port provided on the front of the plasma reactor, an air outlet flange fixedly connected to the rear end of the plasma reactor, and an air outlet pipe fixedly connected to the air outlet flange.

[0005] Preferably, a support is fixedly connected inside the plasma reactor, a ceramic insulator is fixedly connected on the support, and a metal wire is fixedly connected in the ceramic insulator. The support, the ceramic insulator, and the metal wire constitute a discharge electrode. Three sets of discharge electrodes are distributed radially around the plasma reactor, and six sets of discharge electrodes are arranged axially along the plasma reactor.

[0006] Preferably, an L-shaped angle steel is fixedly connected inside the plasma reactor. The L-shaped angle steel is L-shaped, and an electrode plate is fixedly connected to the L-shaped angle steel.

[0007] Preferably, the other end of the outlet pipe is fixedly connected to an adsorption tower inlet flange, the adsorption tower inlet flange is fixedly connected to an activated carbon adsorption tower, the outlet pipe connects the plasma reactor and the activated carbon adsorption tower, and the front of the activated carbon adsorption tower is provided with an adsorption tower observation port, and five adsorption tower observation ports are arranged along the axial direction of the activated carbon adsorption tower.

[0008] Preferably, the top of the activated carbon adsorption tower is fixedly connected to an adsorption tower outlet flange, the adsorption tower outlet flange is fixedly connected to an adsorption tower outlet pipe, and a detector is installed below the adsorption tower outlet flange, which is fixedly connected to the activated carbon adsorption tower.

[0009] Preferably, a skirt is fixedly connected to the bottom of the activated carbon adsorption tower, a flange is fixedly connected to the bottom end of the activated carbon adsorption tower, and a screw conveyor is fixedly connected below the flange.

[0010] Compared with the prior art, the beneficial effects of this utility model are: The ore metallurgical sintering furnace has concrete-cast support piers, which have high strength and stability, providing a solid foundation for the equipment and preventing displacement due to vibration during operation. The neoprene rubber sheet has good elasticity and shock absorption properties, which can effectively absorb the vibration energy generated during reactor operation, reduce the impact on the foundation and surrounding equipment, reduce noise pollution, and extend the service life of the equipment.

[0011] The ore metallurgical sintering furnace has a support structure welded from angle steel, which is robust and can stably fix the ceramic insulators and metal wires, ensuring the positional accuracy of the electrodes under high voltage. The ceramic insulators have excellent insulation performance and can withstand high-frequency high-voltage electric fields, preventing leakage and ensuring safe operation of the equipment. The metal wires are made of tungsten-rhenium alloy, which is resistant to high temperature and has good conductivity. Under high voltage, it can stably release high-energy electrons and improve the efficiency of plasma chemical reaction. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of an ore metallurgical sintering furnace according to the present invention; Figure 2 This is a schematic diagram of a metallurgical sintering furnace for ore production according to this utility model. Figure 3 This is a schematic cross-sectional view of a plasma reactor for an ore metallurgical sintering furnace according to the present invention. Figure 4 This utility model Figure 3 Enlarged diagram of point A in the middle.

[0013] Reference numerals: 1. Support pier; 2. Plasma reactor; 3. Terminal box; 4. Inlet pipe; 5. Outlet pipe; 6. Reactor observation port; 7. Inlet flange; 8. Outlet flange; 9. Activated carbon adsorption tower; 10. Detector; 11. Adsorption tower outlet flange; 12. Adsorption tower outlet pipe; 13. Skirt; 14. Adsorption tower observation port; 15. Flange; 16. Screw conveyor; 17. Adsorption tower inlet flange; 18. Bracket; 19. Ceramic insulator; 20. Metal wire; 21. Electrode plate; 22. L-shaped angle steel; 23. Neoprene rubber sheet. Detailed Implementation

[0014] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0015] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0016] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0017] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0018] Please see Figure 1-4This utility model provides a technical solution: an ore metallurgical sintering furnace, including a support pier 1, with a neoprene rubber plate 23 fixedly connected to the top of the support pier 1. The support pier 1 is made of concrete, which has high strength and stability, and can provide a solid foundation support for the equipment, preventing displacement due to vibration during equipment operation. The neoprene rubber plate 23 has good elasticity and shock absorption performance, which can effectively absorb the vibration energy generated during reactor operation, reduce the impact on the foundation and surrounding equipment, reduce noise pollution, and extend the service life of the equipment. A plasma reactor 2 is fixedly connected to the top of a neoprene rubber sheet 23. Terminal boxes 3 are fixedly connected to both ends of the top of the plasma reactor 2. An air inlet flange 7 is fixedly connected to the front end of the plasma reactor 2. An air inlet pipe 4 is fixedly connected to the air inlet flange 7. A reactor observation port 6 is provided on the front of the plasma reactor 2. An air outlet flange 8 is fixedly connected to the rear end of the plasma reactor 2. An air outlet pipe 5 is fixedly connected to the air outlet flange 8. A support 18 is fixedly connected inside the plasma reactor 2, a ceramic insulator 19 is fixedly connected on the support 18, and a metal wire 20 is fixedly connected in the ceramic insulator 19. The bracket 18 is welded from angle steel, which is sturdy and can stably fix the ceramic insulator 19 and the metal wire 20, ensuring the positional accuracy of the electrode under high voltage environment. The ceramic insulator 19 has excellent insulation performance and can withstand high frequency and high voltage electric fields, preventing leakage and ensuring the safe operation of the equipment. The metal wire 20 is made of tungsten rhenium alloy, which is resistant to high temperature and has good conductivity. Under high voltage, it can stably release high-energy electrons and improve the efficiency of plasma chemical reaction. The bracket 18, ceramic insulator 19, and metal wire 20 constitute the discharge electrode. Three sets of discharge electrodes are distributed radially around the plasma reactor 2, and six sets of discharge electrodes are arranged axially along the plasma reactor 2. An L-shaped angle steel 22 is fixedly connected inside the plasma reactor 2. The L-shaped angle steel 22 is L-shaped. An electrode plate 21 is fixedly connected to the L-shaped angle steel 22. The L-shaped angle steel 22 and the electrode plate 21 constitute a grounded electrode plate. The combination design of L-shaped angle steel 22 and electrode plate 21 not only ensures the structural strength of the grounding electrode plate, but also facilitates its installation and fixation on the inner wall of the plasma reactor 2. The electrode plate 21 is made of 316L stainless steel, which has strong corrosion resistance and can adapt to the complex chemical environment in the flue gas. At the same time, its flat surface can form a uniform electric field distribution, which, together with the discharge electrode, enhances the plasma reaction effect. The other end of the outlet pipe 5 is fixedly connected to the adsorption tower inlet flange 17, and the adsorption tower inlet flange 17 is fixedly connected to the activated carbon adsorption tower 9. The outlet pipe 5 connects the plasma reactor 2 and the activated carbon adsorption tower 9. The front of the activated carbon adsorption tower 9 is provided with an adsorption tower observation port 14, and five adsorption tower observation ports 14 are arranged along the axial direction of the activated carbon adsorption tower 9. The top of the activated carbon adsorption tower 9 is fixedly connected to the adsorption tower outlet flange 11, and the adsorption tower outlet flange 11 is fixedly connected to the adsorption tower outlet pipe 12. The detector 10 is provided below the adsorption tower outlet flange 11 and is fixedly connected to the activated carbon adsorption tower 9. A skirt seat 13 is fixedly connected to the bottom of the activated carbon adsorption tower 9, and a flange 15 is fixedly connected to the bottom end of the activated carbon adsorption tower 9. A screw conveyor 16 is fixedly connected below the flange 15.

[0019] Working Principle: Flue gas containing sulfur, nitrogen oxides, and dust pollutants generated during sintering enters the plasma reactor 2 through the inlet pipe 4 and inlet flange 7. The plasma reactor 2 is stably supported by support blocks 1, and the neoprene rubber plate 23 at the bottom reduces vibration during operation. Inside the reactor, three sets of discharge electrodes (composed of brackets 18, ceramic insulators 19, and metal wires 20) arranged radially and six sets arranged axially form a three-dimensional electric field. Under the action of a high-frequency, high-voltage power supply (connected via the top terminal box 3), the metal wires 20 release high-energy electrons, causing ionization and decomposition of pollutant molecules in the flue gas. Simultaneously, the electrode plates 21 fixed on both sides by L-shaped angle steel 22 form grounding plates, creating a closed electric field with the discharge electrodes, enhancing the plasma chemical reaction and breaking down large molecular pollutants into easily processed small molecules (such as SO2 and NO). x (It is converted into oxides), and the operator can monitor the internal reaction status in real time through the reactor observation port 6; The flue gas, after plasma pretreatment, enters the outlet pipe 5 through the outlet flange 8, and then enters the activated carbon adsorption tower 9 through the adsorption tower inlet flange 17. The adsorption tower is stably supported by the skirt 13. The activated carbon filter material filled in the tower adsorbs the pollutants (such as incompletely decomposed organic waste gas, heavy metal particles, etc.) in the flue gas through its porous structure. The five adsorption tower observation ports 14 distributed along the tower body axis can observe the adsorption status at different heights. The detector 10 at the top monitors the concentration of pollutants such as VOCs in the outlet gas in real time to ensure the purification effect. The purified clean gas enters the adsorption tower outlet pipe 12 through the adsorption tower outlet flange 11 and is finally discharged into the atmosphere. The plasma reactor 2 has a layout of three sets of discharge electrodes distributed radially and six sets arranged axially, forming a three-dimensional electric field space. This allows the flue gas to fully contact the plasma, significantly improving the ionization and decomposition efficiency of pollutants. The internal flow channel design of the reactor is reasonable, and the residence time of the flue gas in it is moderate, ensuring the full progress of the chemical reaction. The setting of the reactor observation port 6 makes it convenient for operators to monitor the internal reaction status in real time and promptly detect and deal with abnormal situations. The activated carbon adsorption tower 9 has a cylindrical structure with high internal space utilization, providing ample adsorption space for the activated carbon filter media. Five observation ports 14 distributed along the axial direction allow for comprehensive observation of the adsorption state at different heights, facilitating the assessment of activated carbon adsorption saturation. The detector 10 at the top can monitor the concentration of pollutants in the outlet gas in real time, enabling online monitoring of the purification effect and ensuring that the emitted gas meets standards. The skirt support 13 design ensures uniform stress distribution and good stability in the adsorption tower, allowing it to adapt to pressure changes within the tower. The flange 15 at the bottom of the adsorption tower is connected to the screw conveyor 16. When the activated carbon is saturated, the waste activated carbon collected by the conical head is transported to the regeneration system or treatment device by the screw conveyor 16 to realize the recycling or compliant disposal of the adsorption material and form a complete closed loop for pollutant treatment.

[0020] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A metallurgical sintering furnace for ore, comprising a support pier (1), characterized in that: The top of the support pier (1) is fixedly connected to a neoprene rubber plate (23), and the top of the neoprene rubber plate (23) is fixedly connected to a plasma reactor (2). The top two ends of the plasma reactor (2) are fixedly connected to terminal boxes (3), and the front end of the plasma reactor (2) is fixedly connected to an air inlet flange (7). An air inlet pipe (4) is fixedly connected to the air inlet flange (7), and a reactor observation port (6) is provided on the front of the plasma reactor (2). The plasma reactor (2) is fixedly connected to the rear end of the gas outlet flange (8), and the gas outlet flange (8) is fixedly connected to the gas outlet pipe (5).

2. The ore metallurgical sintering furnace according to claim 1, characterized in that: The plasma reactor (2) is fixedly connected to a support (18), and a ceramic insulator (19) is fixedly connected to the support (18). A metal wire (20) is fixedly connected to the ceramic insulator (19). The support (18), ceramic insulator (19), and metal wire (20) constitute the discharge electrode. Three sets of discharge electrodes are distributed radially around the plasma reactor (2), and six sets of discharge electrodes are arranged axially around the plasma reactor (2).

3. The ore metallurgical sintering furnace according to claim 2, characterized in that: The plasma reactor (2) is internally fixedly connected with an L-shaped angle steel (22), which is L-shaped, and an electrode plate (21) is fixedly connected on the L-shaped angle steel (22).

4. The ore metallurgical sintering furnace according to claim 3, characterized in that: The other end of the outlet pipe (5) is fixedly connected to the adsorption tower inlet flange (17), and the adsorption tower inlet flange (17) is fixedly connected to the activated carbon adsorption tower (9). The gas outlet pipe (5) connects the plasma reactor (2) and the activated carbon adsorption tower (9). The front of the activated carbon adsorption tower (9) is provided with an adsorption tower observation port (14). There are five adsorption tower observation ports (14) arranged along the axial direction of the activated carbon adsorption tower (9).

5. The ore metallurgical sintering furnace according to claim 4, characterized in that: The activated carbon adsorption tower (9) is fixedly connected to the top of the adsorption tower outlet flange (11), and the adsorption tower outlet pipe (12) is fixedly connected to the adsorption tower outlet flange (11). A detector (10) is set below the adsorption tower outlet flange (11) and is fixedly connected to the activated carbon adsorption tower (9).

6. The ore metallurgical sintering furnace according to claim 5, characterized in that: The bottom of the activated carbon adsorption tower (9) is fixedly connected to a skirt (13), and the bottom end of the activated carbon adsorption tower (9) is fixedly connected to a flange (15). A screw conveyor (16) is fixedly connected below the flange (15).

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