Hot-metal bottle waste heat recovery and flue gas purification integrated device

Abstract

The utility model discloses a hot-metal ladle waste heat recovery and flue gas purification integrated device, and relates to the technical field of hot-metal ladles. The hot-metal bottle waste heat recovery and flue gas purification integrated device comprises a hot-metal bottle and a liquid inlet pipe fixedly arranged on the top face of the hot-metal bottle in a penetrating mode, and a liquid outlet pipe fixedly arranged on the outer wall of the hot-metal bottle in a penetrating mode extends to the inner side of the hot-metal bottle. Pollutant emission is reduced; flue gas flows to drive an air guide wheel, so that a scraping plate automatically cleans impurities accumulated on a filter screen frame to a material storage frame, and the maintenance workload is reduced while the filtering effect is guaranteed; the filter screen frame is convenient to disassemble and replace by adopting a bolt bolting mode, so that the continuity of the purification effect is ensured; and the motor drives the impeller to automatically extract air, so that automation of purification operation is realized, the working efficiency is improved, and efficient, convenient and continuous purification treatment on the flue gas generated by the hot-metal bottle is realized on the whole.

Description

Technical Field

[0001] This utility model relates to the field of molten iron ladle technology, specifically to an integrated device for waste heat recovery and flue gas purification of molten iron ladle. Background Technology

[0002] A molten iron ladle is a container used in steel smelting for collecting and transporting molten iron. It is also called a molten iron ladle or iron container. The outer shell is welded from steel plates and two cast steel hangers, which are the main load-bearing structures and need to have sufficient rigidity and strength. The inner lining is made of refractory materials, such as high alumina, alumina-carbon, or alumina-silicon carbide, which mainly serve to insulate against heat loss from the molten iron and resist the erosion of molten iron and slag.

[0003] During the process of holding and transporting molten iron, molten iron ladles generate a large amount of waste heat, and at the same time produce flue gas containing pollutants such as dust.

[0004] For the flue gas generated by molten iron ladles, existing purification devices often use filter screens to filter and purify the flue gas. As filtration continues, dust and other impurities accumulate on the filter screen, causing the pores of the filter screen to become blocked, resulting in a significant decrease in filtration efficiency and thus affecting the purification effect of the entire flue gas purification device. Therefore, an integrated device for molten iron ladle waste heat recovery and flue gas purification is proposed. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides an integrated device for waste heat recovery and flue gas purification in molten iron ladle. This solves the problem that as filtration continues, dust and other impurities accumulate on the filter screen, causing the pores of the filter screen to become clogged, resulting in a significant decrease in filtration efficiency and thus affecting the purification effect of the entire flue gas purification device.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: it includes a molten iron ladle and an inlet pipe fixedly installed through the top surface of the molten iron ladle, an outlet pipe fixedly installed through the outer wall of the molten iron ladle extending to the inner side of the molten iron ladle, a valve fixedly installed through the outer wall of the outlet pipe, and a purification mechanism and a waste heat recovery mechanism installed above the molten iron ladle.

[0009] The purification mechanism includes an air extraction section and a filtration section;

[0010] The extraction section includes an extraction box and an impeller, and the filtration section includes a filter screen and a scraper.

[0011] The bottom surface of the extraction box is fixedly connected to the top surface of the molten iron ladle. A smoke outlet pipe is fixedly installed through the top surface of the molten iron ladle, extending to the inside of the ladle. The side of the smoke outlet pipe near the extraction box is fixedly installed through the outer wall of the extraction box, extending to the inside of the extraction box. A limit frame is fixedly installed on the inner side of the extraction box. A filter screen frame is installed on the inner side of the limit frame. A connecting rod is rotatably installed on the inner side of the molten iron ladle through a bearing seat. A connecting sleeve is fixedly fitted on the outer wall of the connecting rod. The outer wall of the connecting sleeve is fixedly connected to the outer wall of the scraper. The top surface of the scraper slides in contact with the bottom surface of the filter screen frame. A guide wheel is fixedly fitted on the outer wall of the connecting rod.

[0012] Preferably, the waste heat recovery mechanism includes a heat-conducting tank, a connecting pipe is fixedly provided through the outer wall of the extraction box and extends to the inside of the extraction box, one side of the connecting pipe near the heat-conducting tank is fixedly provided through the outer wall of the heat-conducting tank and extends to the inside of the heat-conducting tank, a water storage frame is fixedly provided on the outer wall of the heat-conducting tank, a water inlet pipe is fixedly provided through the top surface of the water storage frame and extends to the inside of the water storage frame, and a water outlet is fixedly provided through the outer wall of the water storage frame and extends to the inside of the water storage frame.

[0013] Preferably, a motor is fixedly installed on the top surface of the suction box, the bottom surface of the motor output end extends through the top surface of the suction box to the inside of the suction box, a rotating rod is fixedly installed on the bottom surface of the motor output end, the outer wall of the rotating rod is fixedly connected to the inner side of the impeller, and the outer wall of the rotating rod is rotatably connected to the inner side of the suction box through a bearing seat.

[0014] Preferably, the outer wall of the filter frame extends through the inner side of the extraction box to the outer side of the extraction box, and the outer wall of the filter frame is bolted to the outer wall of the extraction box.

[0015] Preferably, a storage frame is slidably provided through the outer wall of the vacuum box, extending to the inner side of the vacuum box, and the outer wall of the storage frame is slidably connected to the inner side of the vacuum box.

[0016] Preferably, a heat-conducting pipe is fixedly provided on the top surface of the connecting pipe, and a smoke exhaust pipe is fixedly provided on the top surface of the heat-conducting pipe. The top surface of the smoke exhaust pipe is fixedly provided through the inner side of the heat-conducting tank and extends to the top of the heat-conducting tank.

[0017] (III) Beneficial Effects

[0018] This utility model provides an integrated device for waste heat recovery and flue gas purification in molten iron ladles. It has the following beneficial effects:

[0019] (I) This integrated device for waste heat recovery and flue gas purification of molten iron ladle has a filter screen frame in the purification mechanism that can effectively filter dust and other impurities in the flue gas, reducing pollutant emissions; the flue gas flow drives the guide wheel to automatically clean the impurities accumulated on the filter screen frame to the storage frame, ensuring the filtration effect while reducing maintenance workload; the filter screen frame is bolted together for easy disassembly and replacement, ensuring the continuity of the purification effect; the motor drives the impeller to automatically draw air, realizing the automation of the purification operation, improving work efficiency, and overall achieving efficient, convenient and continuous purification treatment of the flue gas generated by the molten iron ladle.

[0020] (II) This integrated device for waste heat recovery and flue gas purification in molten iron ladle integrates the waste heat recovery mechanism and the purification mechanism on the top of the molten iron ladle, which has a high space utilization rate. Through the connecting pipe and heat conduction pipe, the heat of the flue gas after preliminary purification can be effectively transferred to the heat conduction tank to heat the cold water in the water storage frame. The heated water can be released from the water outlet for various scenarios such as industry or domestic use, realizing the efficient recovery and utilization of waste heat in molten iron ladle, improving energy utilization rate and reducing energy waste. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the purification mechanism of this utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the purification mechanism of this utility model;

[0024] Figure 4 This is a schematic diagram of the scraper structure in the purification mechanism of this utility model;

[0025] Figure 5 This is a schematic diagram of the waste heat recovery mechanism of this utility model.

[0026] In the diagram: 1. Molten iron ladle; 2. Purification mechanism; 21. Smoke outlet pipe; 22. Exhaust box; 23. Motor; 24. Filter screen frame; 25. Impeller; 26. Rotating rod; 27. Limiting frame; 28. Guide wheel; 29. ​​Material storage frame; 210. Connecting sleeve; 211. Connecting rod; 212. Scraper; 3. Waste heat recovery mechanism; 31. Water storage frame; 32. Heat transfer tank; 33. Heat transfer pipe; 34. Smoke exhaust pipe; 35. Water inlet pipe; 36. Connecting pipe; 37. Water outlet tap; 4. Liquid inlet pipe; 5. Liquid outlet pipe. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-5 The present invention provides a technical solution: including a molten iron ladle 1 and an inlet pipe 4 fixedly and through the top surface of the molten iron ladle 1, an outlet pipe 5 fixedly and through the outer wall of the molten iron ladle 1 extending to the inner side of the molten iron ladle 1, a valve fixedly and through the outer wall of the outlet pipe 5, and a purification mechanism 2 and a waste heat recovery mechanism 3 arranged above the molten iron ladle 1.

[0029] Purification unit 2 includes an air extraction section and a filtration section;

[0030] The air extraction section includes an air extraction box 22 and an impeller 25, and the filtration section includes a filter frame 24 and a scraper 212;

[0031] The bottom surface of the extraction box 22 is fixedly connected to the top surface of the molten iron ladle 1. A smoke outlet pipe 21 is fixedly installed through the top surface of the molten iron ladle 1, extending to the inside of the molten iron ladle 1. The side of the smoke outlet pipe 21 near the extraction box 22 is fixedly installed through the outer wall of the extraction box 22, extending to the inside of the extraction box 22. A limit frame 27 is fixedly installed on the inner side of the extraction box 22. A filter screen frame 24 is installed on the inner side of the limit frame 27. A connecting rod 211 is rotatably installed on the inner side of the molten iron ladle 1 through a bearing seat. A connecting sleeve 210 is fixedly sleeved on the outer wall of the connecting rod 211. The outer wall of the connecting sleeve 210 is fixedly connected to the outer wall of the scraper 212. The top surface of the scraper 212 slides in contact with the bottom surface of the filter screen frame 24. The connecting rod 211 is fixedly sleeved on the outer wall of the connecting rod 211. A guide vane 28 and a motor 23 are fixedly installed on the top surface of the extraction box 22. The bottom surface of the output end of the motor 23 extends through the top surface of the extraction box 22 to the inside of the extraction box 22. A rotating rod 26 is fixedly installed on the bottom surface of the output end of the motor 23. The outer wall of the rotating rod 26 is fixedly connected to the inner side of the impeller 25. The outer wall of the rotating rod 26 is rotatably connected to the inner side of the extraction box 22 through a bearing seat 2. The outer wall of the filter frame 24 extends through the inner side of the extraction box 22 to the outside of the extraction box 22. The outer wall of the filter frame 24 is bolted to the outer wall of the extraction box 22. A storage frame 29 is slidably installed through the outer wall of the extraction box 22 and extends to the inside of the extraction box 22. The outer wall of the storage frame 29 is slidably connected to the inner side of the extraction box 22.

[0032] The waste heat recovery mechanism 3 includes a heat transfer tank 32. A connecting pipe 36 is fixedly installed through the outer wall of the extraction box 22, extending to the inside of the extraction box 22. The side of the connecting pipe 36 near the heat transfer tank 32 is fixedly installed through the outer wall of the heat transfer tank 32, extending to the inside of the heat transfer tank 32. A water storage frame 31 is fixedly installed on the outer wall of the heat transfer tank 32. A water inlet pipe 35 is fixedly installed through the top surface of the water storage frame 31, extending to the inside of the water storage frame 31. A water outlet faucet 37 is fixedly installed through the outer wall of the water storage frame 31, extending to the inside of the water storage frame 31.

[0033] In use, the flue gas generated by the molten iron ladle 1 passes through the flue pipe 21, which is fixedly installed on the top surface of the molten iron ladle 1 and extends to the inside. Under the suction force generated by the impeller 25 connected to the rotating rod 26 driven by the motor 23 fixedly installed on the top surface of the extraction box 22, the flue gas enters the extraction box 22 and is filtered by the filter frame 24 installed in the limiting frame 27 fixedly installed on the inner side of the extraction box 22. When the flue gas enters the extraction box 22, the guide wheel 28 can be rotated. When the guide wheel 28 rotates, it can drive the connecting rod 211 to rotate. The connecting sleeve 210 fixedly sleeved on the outer wall drives the scraper 212 to rotate. The top surface of the scraper 212 slides in contact with the bottom surface of the filter frame 24, scraping off the impurities accumulated on the bottom surface of the filter frame 24 to the storage frame 29 that slides through the outer wall of the extraction box 22.

[0034] The pre-purified flue gas enters the heat transfer tank 32 through the connecting pipe 36 fixedly installed through the outer wall of the extraction box 22. The heat transfer pipe 33 fixedly installed through the top surface of the connecting pipe 36 conducts heat to the heat transfer tank 32, heating the cold water injected into the water storage frame 31 fixedly installed through the top surface by the water inlet pipe 35. The heated water can be released from the water outlet 37 fixedly installed through the outer wall of the water storage frame 31 for use. The flue gas whose temperature has decreased after waste heat recovery is discharged to the outside through the exhaust pipe 34 fixedly installed through the top surface of the heat transfer pipe 33.

[0035] In addition, the outer wall of the filter frame 24 extends through the inner side of the extraction box 22 to the outer side and is bolted to the outer wall of the extraction box 22, which facilitates disassembly and replacement to ensure the purification effect. All parts work together to achieve effective recovery and utilization of waste heat from the molten iron ladle 1 and purification of flue gas.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated device for waste heat recovery and flue gas purification of molten iron ladle, comprising a molten iron ladle (1) and an inlet pipe (4) fixedly penetrating the top surface of the molten iron ladle (1), an outlet pipe (5) fixedly penetrating the outer wall of the molten iron ladle (1) extending to the inner side of the molten iron ladle (1), and a valve fixedly penetrating the outer wall of the outlet pipe (5), characterized in that: A purification mechanism (2) and a waste heat recovery mechanism (3) are provided above the molten iron ladle (1); The purification mechanism (2) includes an air extraction section and a filtration section; The air extraction section includes an air extraction box (22) and an impeller (25), and the filter section includes a filter screen frame (24) and a scraper (212); The bottom surface of the extraction box (22) is fixedly connected to the top surface of the molten iron ladle (1). A smoke outlet pipe (21) is fixedly installed through the top surface of the molten iron ladle (1) and extends to the inside of the molten iron ladle (1). The side of the smoke outlet pipe (21) near the extraction box (22) is fixedly installed through the outer wall of the extraction box (22) and extends to the inside of the extraction box (22). A limit frame (27) is fixedly installed on the inner side of the extraction box (22). A filter frame (24) is installed on the inner side of the limit frame (27). A connecting rod (211) is rotatably installed on the inner side of the molten iron ladle (1) through a bearing seat. A connecting sleeve (210) is fixedly sleeved on the outer wall of the connecting rod (211). The outer wall of the connecting sleeve (210) is fixedly connected to the outer wall of the scraper (212). The top surface of the scraper (212) slides in contact with the bottom surface of the filter frame (24). A guide wheel (28) is fixedly sleeved on the outer wall of the connecting rod (211).

2. The integrated device for waste heat recovery and flue gas purification of molten iron ladle according to claim 1, characterized in that: The waste heat recovery mechanism (3) includes a heat conduction tank (32). A connecting pipe (36) is fixedly installed through the outer wall of the extraction box (22) and extends to the inside of the extraction box (22). The connecting pipe (36) is fixedly installed through the outer wall of the heat conduction tank (32) and extends to the inside of the heat conduction tank (32) on one side near the heat conduction tank (32). A water storage frame (31) is fixedly installed on the outer wall of the heat conduction tank (32). A water inlet pipe (35) is fixedly installed through the top surface of the water storage frame (31) and extends to the inside of the water storage frame (31). A water outlet faucet (37) is fixedly installed through the outer wall of the water storage frame (31) and extends to the inside of the water storage frame (31).

3. The integrated device for waste heat recovery and flue gas purification of molten iron ladle according to claim 1, characterized in that: A motor (23) is fixedly installed on the top surface of the air extraction box (22). The bottom surface of the output end of the motor (23) extends through the top surface of the air extraction box (22) to the inside of the air extraction box (22). A rotating rod (26) is fixedly installed on the bottom surface of the output end of the motor (23). The outer wall of the rotating rod (26) is fixedly connected to the inner side of the impeller (25). The outer wall of the rotating rod (26) is rotatably connected to the inner side of the air extraction box (22) through a bearing seat.

4. The integrated device for waste heat recovery and flue gas purification of molten iron ladle according to claim 1, characterized in that: The outer wall of the filter frame (24) extends through the inner side of the extraction box (22) to the outer side of the extraction box (22), and the outer wall of the filter frame (24) is bolted to the outer wall of the extraction box (22).

5. The integrated device for waste heat recovery and flue gas purification of molten iron ladle according to claim 1, characterized in that: A storage frame (29) is slidably provided through the outer wall of the vacuum box (22) and extends to the inner side of the vacuum box (22). The outer wall of the storage frame (29) is slidably connected to the inner side of the vacuum box (22).

6. The integrated device for waste heat recovery and flue gas purification of molten iron ladle according to claim 2, characterized in that: A heat-conducting pipe (33) is fixedly provided on the top surface of the connecting pipe (36), and a smoke exhaust pipe (34) is fixedly provided on the top surface of the heat-conducting pipe (33). The top surface of the smoke exhaust pipe (34) is fixedly provided through the inner side of the heat-conducting tank (32) and extends to the top of the heat-conducting tank (32).

Images