Flue gas spraying, atomizing, desulfurizing and dedusting device for aluminum alloy smelting furnace

Abstract

The utility model relates to the technical field of aluminum alloy smelting furnace flue gas treatment, and discloses a flue gas spraying, atomizing, desulfurizing and dedusting device for an aluminum alloy smelting furnace, which comprises a cyclone dust collector, a multi-pipe cyclone device, a bag-type dust collector, a desulfurizing tower and a tail gas treatment tower, and a gas flow adjusting mechanism for adjusting the flow of flue gas entering the desulfurizing tower is arranged outside the desulfurizing tower. By means of the auxiliary desulfurization mechanism, products, liquid and the like attached to the inner wall of the desulfurization tower can be scraped off, interference on subsequent spraying desulfurization work is avoided, a pressurizing spray head can swing in a reciprocating mode, flue gas entering the desulfurization tower can be sprayed more comprehensively, and the desulfurization effect is improved; and the amount of flue gas entering the desulfurizing tower can be adjusted, so that excessive flue gas entering the desulfurizing tower at the same time is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of aluminum alloy smelting furnace flue gas treatment technology, specifically relates to a kind of flue gas spray atomization desulfurization dust removal device of aluminum alloy smelting furnace. BACKGROUND

[0002] Aluminum alloy smelting furnace is generally natural gas heating furnace, and after natural gas burns, the waste gas contains smoke dust and oxides containing sulfur, carbon, nitrogen, etc., in the process of aluminum alloy melting and refining, to ensure the quality of aluminum water and reduce burning loss, a certain amount of refining agent and slag cleaning agent will be added, these additives react with impurities in aluminum water, which will produce a large amount of waste gas and smoke dust, which contains various metal oxides and non-metal oxides, and also contains harmful substances, which will pollute the environment when discharged, so the generated flue gas needs to be treated, and the spray method is often used for desulfurization and dust removal treatment during the treatment process, to improve the treatment effect, a kind of flue gas spray atomization desulfurization dust removal device of aluminum alloy smelting furnace is used.

[0003] According to the flue gas spray atomization dust removal system of aluminum alloy smelting furnace (authorized announcement number: CN209123587U) disclosed by patent network, a cyclone dust collector, a multi-tube cyclone device, a bag dust collector, a draft fan, a desulfurization device and a spray tower are arranged, which are connected in sequence by flue gas pipeline, the dust and waste gas formed in the smelting furnace enter the cyclone dust collector, and are filtered by the bag dust collector, desulfurized by the desulfurization device and absorbed by the spray tower, and finally discharged to the outdoor from the flue gas discharge port. Although the existing device can achieve spray atomization of the flue gas in the aluminum alloy smelting furnace, the flue gas is directly washed by the spray washer arranged in the desulfurization tower, and as the washing work continues, a large amount of reaction products and liquid will adhere to the inner wall of the desulfurization tower. If it is not treated, it is easy to cause poor flue gas treatment effect in the later stage. In addition, since the diameter of the flue gas pipeline is fixed, it is difficult to adjust the flue gas flow according to the treatment rate at different stages, which can cause the flue gas to enter the next processing step directly without being processed, resulting in low desulfurization and dust removal efficiency of the flue gas. Therefore, we need to improve a kind of flue gas spray atomization desulfurization dust removal device of aluminum alloy smelting furnace to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of flue gas spray atomization desulfurization dust removal device of aluminum alloy smelting furnace to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a flue gas spray atomization desulfurization and dust removal device for an aluminum alloy smelting furnace, comprising a cyclone dust collector, a multi-tube cyclone device, a bag dust collector, a desulfurization tower and an exhaust gas treatment tower, wherein the desulfurization tower is provided with an auxiliary desulfurization mechanism for spraying and desulfurizing the incoming flue gas, and the outside of the desulfurization tower is provided with a gas volume regulating mechanism for regulating the flow rate of the flue gas entering the desulfurization tower.

[0006] Preferably, the auxiliary desulfurization mechanism includes a scraping assembly for scraping off attachments on the inner wall of the desulfurization tower, a driving motor is provided in the scraping assembly, the driving motor is fixedly mounted on the top of the desulfurization tower, a threaded rod is fixedly mounted on the output shaft of the driving motor, a limiting rod is fixedly mounted inside the desulfurization tower, a scraper is threadedly mounted on the outside of the threaded rod, a mounting plate is fixedly mounted inside the desulfurization tower, a first mounting frame is fixedly mounted on the top of the mounting plate, a mounting rod is rotatably mounted inside the first mounting frame, first bevel gears are fixedly mounted on both ends of the outside of the mounting rod, and a second bevel gear is fixedly mounted on the outside of the threaded rod, so as to facilitate scraping off products and liquids attached to the inner wall of the desulfurization tower and avoid interference with subsequent spray desulfurization work.

[0007] Preferably, a through hole is provided in the scraper for the limiting rod to pass through, and the scraper is in contact with the inner wall of the desulfurization tower, so as to facilitate better scraping of the inner wall of the desulfurization tower. The first bevel gear on the outside of the mounting rod close to the threaded rod is meshed with the second bevel gear to facilitate the realization of related linkage.

[0008] Preferably, the auxiliary desulfurization mechanism also includes a spray assembly for spraying desulfurization on flue gas at different positions, a connecting frame is provided in the spray assembly, the connecting frame is fixedly installed on the bottom of the mounting plate, a movable frame is rotatably installed inside the connecting frame, a first connecting plate is fixedly installed inside the movable frame, a pressurized nozzle is fixedly installed on the bottom of the first connecting plate, an external water pipe is fixedly installed on the outside of the pressurized nozzle, a mounting shaft is rotatably installed inside the mounting plate, a cam is fixedly installed on the bottom of the mounting shaft, a sliding sleeve is fixedly installed on the bottom of the cam, and a third bevel gear is fixedly installed on the top of the mounting shaft, so as to realize the reciprocating swing of the pressurized nozzle, so as to spray the flue gas entering the desulfurization tower more comprehensively and improve the desulfurization effect.

[0009] Preferably, the third bevel gear is engaged with the first bevel gear outside the mounting rod, and the sliding sleeve is slidably mounted inside the movable frame, so as to facilitate the reciprocating swing of the movable frame.

[0010] Preferably, the gas amount adjusting mechanism comprises a second mounting frame fixedly installed outside the desulfurization tower, a second connecting plate fixedly installed outside the second mounting frame, a limiting frame fixedly installed outside the second connecting plate, a guide plate rotatably installed inside the second mounting frame, a gear disc fixedly installed outside the guide plate, and an adjusting block slidably installed inside the guide plate, and a first motor fixedly installed outside the limiting frame, and a first gear fixedly installed on the output shaft of the first motor, so as to adjust the amount of flue gas entering the desulfurization tower, avoid too much flue gas entering the desulfurization tower at the same time, and cause an oversaturated state.

[0011] Preferably, a guide groove for the sliding of the adjusting block is formed in the guide plate, a limiting groove for limiting the movement of the adjusting block is formed in the limiting frame, and the first gear is engaged with the gear disc, so as to dynamically adjust the caliber and control the amount.

[0012] Compared with the prior art, the present application provides a flue gas spraying, atomizing, desulfurizing and dust removing device for an aluminum alloy smelting furnace, which has the following beneficial effects:

[0013] 1. The flue gas spraying, atomizing, desulfurizing and dust removing device for the aluminum alloy smelting furnace is provided with an auxiliary desulfurizing mechanism for spraying and desulfurizing the entering flue gas in the desulfurization tower, which can scrape off the generated substances, dust and liquid attached to the inner wall of the desulfurization tower in use, avoids interference with the subsequent spraying and desulfurizing work, and enables the pressurized spray head to reciprocally swing to more comprehensively spray the flue gas entering the desulfurization tower, realizes better dust removal of the flue gas, improves the desulfurization of the flue gas, and enhances the practicality of the device.

[0014] 2. The flue gas spraying, atomizing, desulfurizing and dust removing device for the aluminum alloy smelting furnace is provided with a gas amount adjusting mechanism for adjusting the flow of the flue gas entering the desulfurization tower outside the desulfurization tower, which can adjust the amount of flue gas entering the desulfurization tower in use, avoids too much flue gas entering the desulfurization tower at the same time, causes an oversaturated state, and further guarantees the desulfurization effect of the flue gas in the desulfurization tower. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a perspective structural schematic view of the flue gas spraying, atomizing, desulfurizing and dust removing device for the aluminum alloy smelting furnace.

[0016] Figure 2 It is an internal structural schematic view of the desulfurization tower in the flue gas spraying, atomizing, desulfurizing and dust removing device for the aluminum alloy smelting furnace.

[0017] Figure 3 It is a perspective structural schematic view of the scraping assembly in the flue gas spraying, atomizing, desulfurizing and dust removing device for the aluminum alloy smelting furnace Figure 1 .

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the scraping component in the flue gas spray atomization desulfurization and dust removal device of this aluminum alloy smelting furnace. Figure 2 .

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of the spray component in the flue gas spray atomization desulfurization and dust removal device of this aluminum alloy smelting furnace.

[0020] Figure 6 This is a schematic diagram of the three-dimensional structure of the gas volume adjustment mechanism in the flue gas spray atomization desulfurization and dust removal device of this aluminum alloy smelting furnace.

[0021] Figure 7 This is a schematic diagram of the disassembled structure of the gas volume regulating mechanism in the flue gas spray atomization desulfurization and dust removal device of this aluminum alloy smelting furnace.

[0022] Figure: 1, cyclone dust collector; 2, multi-cyclone equipment; 3, bag dust collector; 4, desulfurization tower; 5, auxiliary desulfurization mechanism; 51, scraper assembly; 511, drive motor; 512, threaded rod; 513, limit rod; 514, scraper; 515, mounting plate; 516, first mounting bracket; 517, mounting rod; 518, first bevel gear; 519, second bevel gear; 52, spray assembly; 521, connecting bracket; 5 22. Movable frame; 523. First connecting plate; 524. Pressurized nozzle; 525. External water pipe; 526. Mounting shaft; 527. Cam; 528. Sleeve; 529. Third bevel gear; 6. Air volume adjustment mechanism; 61. Second mounting frame; 62. Second connecting plate; 63. Limiting frame; 64. Guide plate; 65. Gear plate; 66. Adjustment block; 67. First motor; 68. First gear; 7. Exhaust gas treatment tower. DETAILED DESCRIPTION

[0023] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is described in further detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] Example 1: Please refer to Figure 1-Figure 5 The utility model provides a technical solution: a flue gas spray atomization desulfurization and dust removal device for an aluminum alloy smelting furnace, comprising a cyclone dust collector 1, a multi-tube cyclone device 2, a bag dust collector 3, a desulfurization tower 4 and a tail gas treatment tower 7. The desulfurization tower 4 is provided with an auxiliary desulfurization mechanism 5 for spraying and desulfurizing the incoming flue gas, and the outside of the desulfurization tower 4 is provided with a gas volume regulating mechanism 6 for regulating the flow of the flue gas entering the desulfurization tower 4.

[0025] Furthermore, the auxiliary desulfurization mechanism 5 includes a scraping component 51 for scraping off the attachments on the inner wall of the desulfurization tower 4. A driving motor 511 is provided in the scraping component 51, and the driving motor 511 is fixedly installed on the top of the desulfurization tower 4. A threaded rod 512 is fixedly installed on the output shaft of the driving motor 511. A limiting rod 513 is fixedly installed inside the desulfurization tower 4, and a scraper 514 is threadedly installed on the outside of the threaded rod 512. A mounting plate 515 is fixedly installed inside the desulfurization tower 4, and a first mounting frame 516 is fixedly installed on the top of the mounting plate 515. A mounting rod 517 is rotatably installed inside the first mounting frame 516, and a first bevel gear 518 is fixedly installed on both ends of the outside of the mounting rod 517. A second bevel gear 519 is fixedly installed on the outside of the threaded rod 512, which is convenient for scraping off the products and liquids attached to the inner wall of the desulfurization tower 4 to avoid interference with the subsequent spray desulfurization work.

[0026] Furthermore, a through hole is provided in the scraper 514 for the limiting rod 513 to pass through, and the scraper 514 is in contact with the inner wall of the desulfurization tower 4, so as to facilitate better scraping of the inner wall of the desulfurization tower 4. The first bevel gear 518 on the outside of the mounting rod 517 near the side of the threaded rod 512 is engaged with the second bevel gear 519 to facilitate the realization of related linkage.

[0027] Furthermore, the auxiliary desulfurization mechanism 5 also includes a spray assembly 52 for spraying desulfurization on flue gas at different positions. A connecting frame 521 is provided in the spray assembly 52, and the connecting frame 521 is fixedly installed at the bottom of the mounting plate 515. A movable frame 522 is rotatably installed inside the connecting frame 521, and a first connecting plate 523 is fixedly installed inside the movable frame 522. A pressurized nozzle 524 is fixedly installed at the bottom of the first connecting plate 523, and an external water pipe 525 is fixedly installed outside the pressurized nozzle 524. A mounting shaft 526 is rotatably installed inside the mounting plate 515, and a cam 527 is fixedly installed at the bottom of the mounting shaft 526. A sliding sleeve 528 is fixedly installed at the bottom of the cam 527, and a third bevel gear 529 is fixedly installed on the top of the mounting shaft 526, so as to realize the reciprocating swing of the pressurized nozzle 524, so as to spray the flue gas entering the desulfurization tower 4 more comprehensively and improve the desulfurization effect.

[0028] Furthermore, the third bevel gear 529 is engaged with the first bevel gear 518 outside the mounting rod 517 , and the sliding sleeve 528 is slidably mounted inside the movable frame 522 , so as to facilitate the reciprocating swing of the movable frame 522 .

[0029] Example 2: Please refer to Figure 6-Figure 7And combined with example one, further obtained, gas adjusting mechanism 6 includes second mounting frame 61, second mounting frame 61 is fixedly installed on the outside of desulfurization tower 4, second mounting frame 61 is fixedly installed with second connecting plate 62 outside, second connecting plate 62 is fixedly installed with limit frame 63 outside, second mounting frame 61 is rotatably installed with guide plate 64 inside, guide plate 64 is fixedly installed with gear disc 65 outside, guide plate 64 is slidably installed with adjusting block 66 inside, limit frame 63 is fixedly installed with first motor 67 outside, first motor 67 output shaft is fixedly installed with first gear 68, it is convenient for the smoke quantity that enters to the inside of desulfurization tower 4 is adjusted, avoid the same time entering to the inside of desulfurization tower 4 too much, lead to too saturated state.

[0030] Further, the guide plate 64 is internally provided with a guide groove for sliding the adjusting block 66, the limit frame 63 is internally provided with a limit groove for limiting the movement of the adjusting block 66, and the first gear 68 is engaged with the gear disc 65, so as to dynamically adjust the caliber size and control the amount of smoke.

[0031] In the actual operation process, the flue gas of the aluminum alloy smelting furnace can be introduced into the cyclone dust collector 1. Then, under the operation of the cyclone dust collector 1, the multi-tube cyclone equipment 2, and the bag dust collector 3, the flue gas can be processed. After the flue gas treated in the above is discharged from the bag dust collector 3, in order to ensure that the flue gas inside the desulfurization tower 4 is better treated, the amount of flue gas entering the desulfurization tower 4 can be adjusted. The first motor 67 can be turned on to rotate the first gear 68, so that the set gear plate 65 rotates, thereby rotating the set guide plate 64, and under the limit of the limit slot of the limit frame 63, the adjustment The block 66 slides in the guide groove inside the guide plate 64 to adjust the size of the caliber to control the amount of flue gas entering the desulfurization tower 4. After the adjustment is completed, the flue gas discharged from the bag filter 3 can be passed into the desulfurization tower 4 through the gas volume regulating mechanism 6, and the external water resource can be connected to the external water pipe 525, and sprayed out after being pressurized by the pressurized nozzle 524 to desulfurize the flue gas. Subsequently, in order to ensure better desulfurization of the flue gas inside the desulfurization tower 4 and avoid the product or dust in the flue gas from adhering to the inner wall of the desulfurization tower 4, the drive motor 511 can be turned on to make the screw The threaded rod 512 rotates, and under the limit of the limit rod 513, the scraper 514 can be moved outside the threaded rod 512 to scrape off the attachments on the inner wall of the desulfurization tower 4. At the same time, as the threaded rod 512 rotates, the second bevel gear 519 outside the threaded rod 512 rotates, so that the first bevel gear 518 outside the mounting rod 517 engaged with it rotates, thereby rotating the mounting rod 517 inside the first mounting bracket 516, so that the first bevel gear 518 on the other side of the mounting rod 517 rotates, so that the third bevel gear 520 engaged with the first bevel gear 518 on the other side of the mounting rod 517 rotates. 9 rotates to rotate the mounting shaft 526. Under the action of the cam 527, the cam 527 can slide back and forth inside the movable frame 522 to drive the movable frame 522 to swing, so that the pressurized nozzle 524 swings accordingly, spraying the flue gas entering the desulfurization tower 4, increasing the spraying area and enhancing the desulfurization effect. By controlling the forward and reverse rotation of the drive motor 511, with the cooperation of the scraper 514, the attachments on the inner wall of the desulfurization tower 4 can be scraped back and forth to ensure the desulfurization effect of the flue gas inside the desulfurization tower 4. After desulfurization, the flue gas can be discharged to the tail gas treatment tower 7 for further treatment.

[0032] The above embodiments merely represent one or several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A flue gas spray atomization desulfurization and dust removal device for an aluminum alloy smelting furnace, comprising a cyclone dust collector (1), a multi-cyclone device (2), a bag dust collector (3), a desulfurization tower (4) and an exhaust gas treatment tower (7), characterized in that: The desulfurization tower (4) is provided with an auxiliary desulfurization mechanism (5) for spraying and desulfurizing the incoming flue gas, and the desulfurization tower (4) is provided with a gas flow regulating mechanism (6) for regulating the flow of the flue gas entering the desulfurization tower (4). The auxiliary desulfurization mechanism (5) comprises a scraping assembly (51) for scraping off attachments on the inner wall of the desulfurization tower (4). A driving motor (511) is provided in the scraping assembly (51), and the driving motor (511) is fixedly mounted on the top of the desulfurization tower (4). A threaded rod (512) is fixedly mounted on the output shaft of the driving motor (511). A limiting rod (513) is fixedly mounted inside the desulfurization tower (4). A scraper (514) is threadedly mounted on the outside of the threaded rod (512). A mounting plate (515) is fixedly mounted inside the desulfurization tower (4). A first mounting frame (516) is fixedly mounted on the top of the mounting plate (515). A mounting rod (517) is rotatably mounted inside the first mounting frame (516). First bevel gears (518) are fixedly mounted on both ends of the outside of the mounting rod (517), and a second bevel gear (519) is fixedly mounted on the outside of the threaded rod (512).

2. The flue gas spray atomization desulfurization and dust removal device for an aluminum alloy smelting furnace according to claim 1, characterized in that: A through hole for the limiting rod (513) to pass through is provided in the scraper (514), and the scraper (514) is in contact with the inner wall of the desulfurization tower (4). The first bevel gear (518) and the second bevel gear (519) on the outside of the mounting rod (517) near the side of the threaded rod (512) are meshed.

3. The flue gas spray atomization desulfurization and dust removal device for an aluminum alloy smelting furnace according to claim 1, characterized in that: The auxiliary desulfurization mechanism (5) also includes a spray assembly (52) for spraying and desulfurizing flue gas at different positions. A connecting frame (521) is provided in the spray assembly (52). The connecting frame (521) is fixedly mounted on the bottom of the mounting plate (515). A movable frame (522) is rotatably mounted inside the connecting frame (521). A first connecting plate (523) is fixedly mounted inside the movable frame (522). A pressurizing nozzle (524) is fixedly mounted on the bottom of the first connecting plate (523). An external water pipe (525) is fixedly mounted on the outside of the pressurizing nozzle (524). A mounting shaft (526) is rotatably mounted inside the mounting plate (515). A cam (527) is fixedly mounted on the bottom of the mounting shaft (526). A sliding sleeve (528) is fixedly mounted on the bottom of the cam (527). A third bevel gear (529) is fixedly mounted on the top of the mounting shaft (526).

4. The flue gas spray atomization desulfurization and dust removal device for an aluminum alloy smelting furnace according to claim 3, characterized in that: The third bevel gear (529) is engaged with the first bevel gear (518) outside the mounting rod (517), and the sliding sleeve (528) is slidably mounted inside the movable frame (522).

5. The flue gas spray atomization desulfurization and dust removal device for an aluminum alloy smelting furnace according to claim 1, characterized in that: The gas volume regulating mechanism (6) comprises a second mounting frame (61), the second mounting frame (61) is fixedly mounted on the outside of the desulfurization tower (4), a second connecting plate (62) is fixedly mounted on the outside of the second mounting frame (61), a limiting frame (63) is fixedly mounted on the outside of the second connecting plate (62), a guide plate (64) is rotatably mounted on the inside of the second mounting frame (61), a gear plate (65) is fixedly mounted on the outside of the guide plate (64), an adjusting block (66) is slidably mounted on the inside of the guide plate (64), a first motor (67) is fixedly mounted on the outside of the limiting frame (63), and a first gear (68) is fixedly mounted on the output shaft of the first motor (67).

6. The flue gas spray atomization desulfurization and dust removal device for an aluminum alloy smelting furnace according to claim 5, characterized in that: A guide groove for sliding the adjustment block (66) is provided inside the guide plate (64), a limiting groove for limiting the movement of the adjustment block (66) is provided inside the limiting frame (63), and the first gear (68) is meshed with the gear plate (65).

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