Novel manganese ingot manufacturing dust removal system
By using nitrogen isolation and SCR denitrification technology during the manganese ingot manufacturing process, the problems of dust explosion and environmentally friendly emissions in manganese ingot manufacturing are solved, and safe and efficient dust removal and metal powder recovery are achieved.
Patent Information
- Application Number
- CN202420424883.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-06
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-03-06
Smart Images
Figure CN222131273U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of metal powder dust removal, in particular to a novel manganese ingot manufacturing dust removal system. Background Art
[0002] Bag dust collectors or cyclone dust collectors are the preferred equipment for dust removal in most industries. However, in the field of manganese ingot manufacturing, metal powders will spread during the crushing of ferroalloys and the addition of metal powders into the medium frequency furnace, so they need to be collected and uniformly processed or recycled. The dust removal gas often contains dust and is hot. Once sparks are generated, the bags will catch fire or even a dust explosion will occur, which is very unsafe. Cyclone dust removal does not meet the requirements of environmental emissions. Utility Model Content
[0003] The purpose of the utility model is to provide a novel dust removal system for manufacturing manganese ingots to solve the problems raised in the above background technology.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A novel dust removal system for manufacturing manganese ingots comprises an intermediate frequency furnace, wherein the intermediate frequency furnace is provided with a furnace cover, a venturi tube is installed on the furnace cover, an air inlet end of the venturi tube is connected to a nitrogen tank through a nitrogen pipeline, the nitrogen tank is connected to a nitrogen generator through a nitrogen replenishment pipeline, an air outlet end of the venturi tube is connected to a bag dust collector through a dust removal pipeline, and the nitrogen generator is provided with an air inlet pipeline.
[0006] As a further solution of the utility model: the nitrogen in the nitrogen pipeline has a certain air pressure. When the nitrogen passes through the venturi tube, the airflow is accelerated to generate negative pressure to suck out the dust and smoke in the medium frequency furnace, and is sent to the bag dust collector through the dust removal pipeline for dust removal.
[0007] As a further solution of the utility model: the gas purified by the bag filter is sent to the SCR denitration equipment group through a purification pipeline, and the SCR denitration equipment group is provided with a discharge channel.
[0008] As a further solution of the utility model: the nitrogen separated by the SCR denitration equipment group is sent to a nitrogen replenishment pipeline, and enters a nitrogen tank through the nitrogen replenishment pipeline for storage.
[0009] As a further solution of the utility model: the nitrogen separated by the SCR denitration equipment group is connected to the air intake pipeline through a re-separation pipeline and is secondary separated and purified by a nitrogen generator.
[0010] As a further solution of the utility model: a recovery pipe for recovering and reusing the metal powder is arranged at the bottom of the bag filter.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] This new manganese ingot manufacturing dust removal system uses the isolation, flame retardancy, explosion-proof and corrosion-resistant properties of nitrogen to replace the air flow used inside the bag filter with nitrogen. In a nitrogen environment, the metal powder is kept at a safe temperature in the bag filter, thereby improving the safety of the equipment. At the same time, it has high efficiency and good dust removal effect. It can use the bag filter for dust removal operations and use the on-site SCR denitrification equipment group to recover nitrogen. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the structure of a new type of dust removal system for manganese ingot manufacturing.
[0014] In the figure: 1. Medium frequency furnace; 2. SCR denitrification equipment group; 3. Re-separation pipeline; 4. Nitrogen tank; 5. Nitrogen replenishment pipeline; 6. Bag filter; 7. Nitrogen pipeline; 8. Venturi tube; 9. Dust removal pipeline; 10. Recovery pipeline; 11. Emission channel; 12. Purification pipeline; 13. Air intake pipeline; 14. Nitrogen generator. DETAILED DESCRIPTION
[0015] See also Figure 1 In the embodiment of the utility model, a novel dust removal system for manufacturing manganese ingots includes an intermediate frequency furnace 1, the intermediate frequency furnace 1 is provided with a furnace cover, a venturi tube 8 is installed on the furnace cover, the air inlet end of the venturi tube 8 is connected to the nitrogen tank 4 through a nitrogen pipeline 7, the nitrogen tank 4 is connected to the nitrogen generator 14 through a nitrogen replenishment pipeline 5, the air outlet end of the venturi tube 8 is connected to the bag filter 6 through a dust removal pipeline 9, and the nitrogen generator 14 is provided with an air inlet pipeline 13. The chemical properties of nitrogen are very stable and generally do not react with other substances. This inert quality makes it widely used in many anaerobic environments, such as using nitrogen to remove nitrogen in a specific container. The air displacement replacement plays the role of isolation, flame retardancy, explosion prevention and corrosion resistance, so it can be used for the recovery of metal powder. The nitrogen pipeline 7 is provided with an air pump, and the nitrogen is pressurized by the air pump. The smoke and dust are extracted through the venturi tube 8. It can also be used for closed crushing devices. If the temperature is high, a cooling device can be set on the dust removal pipeline 9. The cooling device is installed selectively. The air flow temperature is reduced by heat exchange and the air flow is sent to the bag dust collector 6 for dust removal. Nitrogen can effectively avoid dust explosion and improve equipment safety. At the same time, it has high efficiency and good dust removal effect, and the bag dust collector 6 can be used for dust removal operations.
[0016] In a preferred embodiment, the nitrogen in the nitrogen pipeline 7 has a certain air pressure. When the nitrogen passes through the venturi tube 8, the airflow is accelerated to generate negative pressure to suck out the dust and smoke in the medium frequency furnace 1, and is sent to the bag dust collector 6 through the dust removal pipeline 9 for dust removal. The principle of the Venturi effect is that when the wind blows through an obstacle, the air pressure near the port above the leeward side of the obstacle is relatively low, thereby generating an adsorption effect and causing air flow. The working principle of the Venturi tube is a pipeline that first contracts and then gradually expands. By measuring the pressure difference between the inlet cross section and the minimum cross section, i.e., the throat cross section, metal dust and smoke are adsorbed.
[0017] In a preferred embodiment, the gas purified by the bag filter 6 is sent to the SCR denitrification equipment group 2 through the purification pipeline 12. The SCR denitrification equipment group 2 is provided with an emission channel 11. The SCR denitrification equipment is a prior art and is usually used for flue gas treatment. It is a set of flue gas purification equipment that most companies have. This method utilizes the reduction function of ammonia to NOx. Under the action of a catalyst, NOx, mainly NO, is reduced to N2 and water that have little impact on the atmosphere. The reducing agent is NH3. N2 is recovered to the nitrogen tank 4 for reuse. The nitrogen separated by the SCR denitrification equipment group 2 is sent to the nitrogen replenishment pipeline 5, and enters the nitrogen tank 4 through the nitrogen replenishment pipeline 5 for storage.
[0018] In a preferred embodiment, the nitrogen separated by the SCR denitrification equipment group 2 is connected to the intake pipeline 13 through the re-separation pipeline 3, and is secondary separated and purified by the nitrogen generator 14. The output end of the SCR denitrification equipment group 2 can be provided with a gas detector to determine whether the gas contains other combustible gases by detecting the gas, thereby ensuring the safety of the equipment operation. If other combustible gases still exist in the gas passing through the SCR denitrification equipment group 2 due to the SCR denitrification equipment group 2 or other reasons, it can be switched to the re-separation pipeline 3, and then separated and processed by the nitrogen generator 14 and sent to the nitrogen tank 4 for storage.
[0019] In a preferred embodiment, a recovery pipe 10 for recovering and reusing metal powder is provided at the bottom of the bag filter 6 .
[0020] It should be noted that the above embodiments all belong to the same utility model concept, and the description of each embodiment has its own focus. For matters that are not described in detail in some embodiments, reference can be made to the description in other embodiments.
[0021] The above-mentioned embodiments only express the implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A novel dust removal system for manufacturing manganese ingots, comprising an intermediate frequency furnace (1), wherein the intermediate frequency furnace (1) is provided with a furnace cover, and is characterized in that: A venturi tube (8) is installed on the furnace cover, the air inlet end of the venturi tube (8) is connected to the nitrogen tank (4) through a nitrogen pipeline (7), the nitrogen tank (4) is connected to the nitrogen generator (14) through a nitrogen replenishment pipeline (5), the air outlet end of the venturi tube (8) is connected to the bag filter (6) through a dust removal pipeline (9), and the nitrogen generator (14) is provided with an air inlet pipeline (13).
2. A novel manganese ingot manufacturing dust removal system according to claim 1, characterized in that: The nitrogen in the nitrogen pipeline (7) has a certain air pressure. When the nitrogen passes through the venturi tube (8), the airflow is accelerated to generate negative pressure to suck out the dust and smoke in the medium frequency furnace (1), and then is sent to the bag filter (6) for dust removal through the dust removal pipeline (9).
3. A novel dust removal system for manufacturing manganese ingots according to claim 1 or 2, characterized in that: The gas purified by the bag filter (6) is sent to the SCR denitration equipment group (2) through a purification pipeline (12); the SCR denitration equipment group (2) is provided with a discharge channel (11).
4. A novel manganese ingot manufacturing dust removal system according to claim 3, characterized in that: The nitrogen separated by the SCR denitration equipment group (2) is sent to a nitrogen replenishment pipeline (5), and enters a nitrogen tank (4) through the nitrogen replenishment pipeline (5) for storage.
5. A novel manganese ingot manufacturing dust removal system according to claim 3, characterized in that: The nitrogen separated by the SCR denitration equipment group (2) is connected to the air intake pipeline (13) through the re-separation pipeline (3) and is secondary separated and purified by the nitrogen generator (14).
6. A novel manganese ingot manufacturing dust removal system according to claim 1, characterized in that: A recovery pipe (10) for recovering and reusing metal powder is arranged at the bottom of the bag filter (6).