Rare earth roasting flue gas purification device

Abstract

The utility model relates to the technical field of flue gas purification, and discloses a rare earth roasting flue gas purification device which comprises a main box body, a supporting bottom frame is fixedly connected to the inner wall of the main box body, a limiting frame is fixedly connected to the top of the supporting bottom frame, and a double-layer filter box is slidably connected into the limiting frame in a sleeved mode. An anti-sputtering frame is fixedly connected to one side of the supporting bottom frame, and a groove is formed in the outer wall of the main box body. According to the rare earth roasting flue gas purification device, when flue gas generated by rare earth roasting is introduced from the gas inlet pipe, after the flue gas enters the main box body through the gas inlet pipe, large-particle impurities in the flue gas are filtered and dedusted through two groups of double-layer filter boxes, and the flue gas enters the lower part of a spray head after dedusting is finished; at the moment, the spray head is started to spray the flue gas, so that the flue gas is dedusted in advance before the device sprays, adsorbs and purifies, dust particles and the like are prevented from hindering the effect of spraying, adsorbing and purifying the ammonia water in the spray head, and the purification efficiency of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas purification, in particular to a rare earth roasting flue gas purification device. Background Art

[0002] Rare earth is a general term for 17 metal elements including lanthanide elements, scandium and yttrium in the periodic table. Rare earth elements have been widely used in petroleum, chemical industry, metallurgy, textile, ceramics, glass, permanent magnetic materials and other fields. With the advancement of science and technology and the continuous breakthroughs in application technology, the value of rare earth oxides will become increasingly greater. The raw and auxiliary materials used in the production of rare earths are different, and the production processes are also different. All rare earth processing and production processes will eventually bring a large amount of waste gas and flue gas, which are very harmful.

[0003] Existing rare earths will also produce flue gas during the roasting process, and this flue gas is usually purified by a flue gas purification device. Most flue gas purification devices use a spray tower, i.e., a spray absorption method, to absorb toxic gases in the flue gas when purifying the flue gas generated by the rare earth roasting, thereby achieving the purpose of purification and isolation. However, before pouring the flue gas into the flue gas purification device for purification, the large particles of impurities in the flue gas need to be isolated before the next step of spray adsorption can be carried out. However, when the flue gas purification is completed by the spray tower, it only uses liquid adsorbents for adsorption purification. There is a spray dead angle in the purification of the flue gas generated by the rare earth roasting, that is, it cannot ensure that all the flue gas can be completely sprayed and then purified. For this reason, we propose a rare earth roasting flue gas purification device. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a rare earth roasting fume purification device, which solves the problems raised in the above background technology.

[0005] The utility model provides the following technical solution: a rare earth roasting flue gas purification device, comprising a main box body, the inner wall of the main box body is fixedly connected to a supporting base frame, the top of the supporting base frame is fixedly connected to a limiting frame, the inner sliding sleeve of the limiting frame is provided with a double-layer filter box, one side of the supporting base frame is fixedly connected to an anti-sputtering frame, the outer wall of the main box body is provided with a groove, the inside of the groove is provided with a bolt and nut group, the outside of the bolt and nut group is sleeved with a sealing door, one side of the main box body is fixedly connected to an exhaust pipe, and the inside of the exhaust pipe is sleeved with an activated carbon particle box.

[0006] Preferably, a water tank is fixedly connected to the top of the main box body, a water inlet pipe is provided on one side of the water tank, and a nozzle is installed at the bottom of the water tank.

[0007] Preferably, an air inlet pipe is opened on one side of the main box body, and the air inlet pipe is opposite to the double-layer filter box. A clamping plate is provided on the top of the inner cavity of the main box body, and the clamping plate and the limiting frame correspond to each other.

[0008] Preferably, the anti-splash frame has a trapezoidal shape, a drainage hole is provided at the bottom of the anti-splash frame, and a water collecting tank is fixedly connected to the bottom of the inner cavity of the main box body.

[0009] Preferably, the water collecting tank is located directly below the nozzle, a drain pipe is provided outside the water collecting tank, and the drain pipe passes through the main box body.

[0010] Preferably, a sealing ring is sleeved on the external thread of the exhaust pipe, a rubber layer is fixedly connected to the inside of the sealing door, and the rubber layer fits with a groove on the outside of the main box body.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The rare earth roasting flue gas purification device uses a limit frame fixedly connected to the top of the supporting base frame and a double-layer filter box slidably sleeved inside the limit frame. When the device introduces the flue gas generated by the rare earth roasting from the air inlet pipe, the flue gas enters the interior of the main box through the air inlet pipe, and then passes through two groups of double-layer filter boxes to filter and remove dust from large particles of impurities in the flue gas. After the dust removal is completed, the flue gas enters under the nozzle, and the nozzle is started to spray the flue gas at this time, thereby allowing the device to remove dust from the flue gas in advance before spraying and adsorbing the purification, avoiding dust particles and the like hindering the effect of ammonia spraying and adsorbing purification in the nozzle, thereby improving the purification efficiency of the device.

[0013] 2. The rare earth roasting flue gas purification device uses an exhaust pipe fixedly connected to one side of the main box body and an activated carbon particle box sleeved inside the exhaust pipe. After the flue gas is adsorbed and purified by ammonia water sprayed by the nozzle, the flue gas that has been initially purified enters the interior of the exhaust pipe, and is solidly adsorbed by the activated carbon particles in the activated carbon particle box to achieve the purpose of secondary purification. Moreover, there is no omission during the secondary purification of the flue gas, which improves the effect of the device in purifying the flue gas during rare earth roasting. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a side view of the structure of the utility model;

[0016] Figure 3 This is the structural assembly diagram of the utility model;

[0017] Figure 4 This is a cross-sectional view of the structure of the utility model;

[0018] Figure 5 It is a structural schematic diagram of the anti-sputtering frame of the utility model.

[0019] In the figure: 1. Main box body; 2. Water storage tank; 3. Nozzle; 4. Air inlet pipe; 5. Support frame; 6. Limit frame; 7. Double-layer filter box; 8. Anti-splash frame; 9. Drain hole; 10. Water collecting tank; 11. Exhaust pipe; 12. Activated carbon granule box; 13. Sealing ring; 14. Sealing door; 15. Rubber layer. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0021] See also Figure 1-2A rare earth roasting fume purification device includes a main box 1. The main box 1 serves as the supporting structure of the device and the main place for purification. The main box 1 achieves the purpose of centralized purification of the fume generated by rare earth roasting through the enclosed space formed by itself. The inner wall of the main box 1 is fixedly connected with a supporting frame 5. The supporting frame 5 serves as the supporting structure of the device. It plays the role of supporting a limit frame 6, a double-layer filter box 7 and an anti-sputtering frame 8, thereby improving the stability of the installation of the double-layer filter box 7. The top of the supporting frame 5 is fixed The limiting frame 6 is connected, and the limiting frame 6 serves as the limiting structure of the device, which has the effect of limiting the double-layer filter box 7, so that the double-layer filter box 7 can be quickly connected and disassembled. The inner sliding sleeve of the limiting frame 6 is connected with the double-layer filter box 7. The double-layer filter box 7 serves as the dust removal structure of the device, which plays a role in filtering large particles such as dust in the flue gas, so that the comprehensiveness of ammonia spraying is improved during the later stage of flue gas spraying and adsorption. One side of the supporting frame 5 is fixedly connected with an anti-splashing frame 8, and the anti-splashing frame 8 serves as the dust removal structure of the device. The protective guide structure of the device, after ensuring that the smoke filtered by the double-layer filter box 7 enters the bottom of the nozzle 3, prevents the ammonia sprayed by the nozzle 3 from soaking the double-layer filter box 7, thereby improving the protection of the double-layer filter box 7. The outer wall of the main box 1 is provided with a groove, which plays the role of clamping the limiting sealing door 14. A bolt and nut group is provided inside the groove, and the sealing door 14 is sleeved on the outside of the bolt and nut group. The sealing door 14 serves as a sealing structure of the device. When the double-layer filter box 7 needs to be replaced, the sealing door 14 can be taken out from the inside of the main box 1 by rotating the bolt and nut group, and then the double-layer filter box 7 is replaced, thereby improving the convenience of replacement and maintenance of the device. An exhaust pipe 11 is fixedly connected to one side of the main box 1. The exhaust pipe 11 serves as the exhaust structure of the device, which plays the role of limiting the activated carbon particle box 12. The inside of the exhaust pipe 11 is sleeved with the activated carbon particle box 12, and the activated carbon particles are placed inside the activated carbon particle box 12 as a solid adsorbent, thereby achieving the effect of secondary purification of rare earth roasting smoke.

[0022] See also Figure 3-5A water tank 2 is fixedly connected to the top of the main box body 1, and ammonia water is stored in the water tank 2. Ammonia water is used as the liquid adsorbent of the device to absorb the flue gas through a spray adsorption method, thereby improving the purification efficiency of the device. A water inlet pipe is provided on one side of the water tank 2, and a nozzle 3 is installed at the bottom of the water tank 2. The nozzle 3 is a prior art and is not described in detail in this application. An air intake pipe 4 is provided on one side of the main box body 1. The air intake pipe 4 is opposite to the double-layer filter box 7. The air intake pipe 4 ensures that the flue gas introduced therein is directly filtered by the double-layer filter box 7, thereby improving the dust removal effect of the device. A card plate is provided on the top of the inner cavity of the main box body 1, and the card plate corresponds to the limit frame 6. The anti-splashing frame 8 has a trapezoidal shape. A drainage hole 9 is provided at the bottom of the sputtering frame 8, and the drainage hole 9 serves to discharge the ammonia water splashed into the anti-sputtering frame 8 downward, thereby avoiding the accumulation of ammonia water on the top of the supporting frame 5. A water collecting tank 10 is fixedly connected to the bottom of the inner cavity of the main box body 1, and the water collecting tank 10 is located directly below the nozzle 3. A drainage pipe is provided on the outside of the water collecting tank 10, and the drainage pipe passes through the main box body 1. A sealing ring 13 is connected to the external thread of the exhaust pipe 11, and the sealing ring 13 has the effect of pressing and limiting the activated carbon granule box 12, thereby improving the stability of the activated carbon granule box 12. A rubber layer 15 is fixedly connected to the inside of the sealing door 14, and the rubber layer 15 improves the sealing effect of the device. The rubber layer 15 fits with the groove on the outside of the main box body 1.

[0023] Working principle: When in use, after the device guides the flue gas generated by the rare earth roasting into the interior of the main box 1 through the air inlet pipe 4, the two sets of double-layer filter boxes 7 slidingly sleeved inside the limit frame 6 are used to remove and filter large impurities such as dust particles in the flue gas, and the dust-removed flue gas enters the interior of the main box 1 through the air outlet of the double-layer filter box 7 and the anti-splash frame 8 to reach the bottom of the nozzle 3. At this time, the nozzle 3 is started to spray the flue gas, and the ammonia water stored in the water tank 2 is sprayed through the nozzle 3. The flue gas is preliminarily purified and adsorbed by the ammonia water, and the ammonia water after spraying is collected by the water collecting tank 10. The preliminarily purified flue gas enters the interior of the exhaust pipe 11, and after the flue gas is secondary purified and adsorbed by the activated carbon particle box 12, it can be discharged to the outside through the sealing ring 13.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. At the same time, in the drawings of the present utility model, the fill pattern is only for distinguishing the layers, without any other limitation.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rare earth roasting flue gas purification device, comprising a main box (1), characterized in that: The inner wall of the main box body (1) is fixedly connected to a supporting frame (5), the top of the supporting frame (5) is fixedly connected to a limiting frame (6), the inner part of the limiting frame (6) is slidably sleeved with a double-layer filter box (7), one side of the supporting frame (5) is fixedly connected to an anti-splash frame (8), the outer wall of the main box body (1) is provided with a groove, the interior of the groove is provided with a bolt and nut group, the outer side of the bolt and nut group is sleeved with a sealing door (14), one side of the main box body (1) is fixedly connected to an exhaust pipe (11), and the interior of the exhaust pipe (11) is sleeved with an activated carbon particle box (12).

2. A rare earth roasting flue gas purification device according to claim 1, characterized in that: The top of the main box body (1) is fixedly connected to a water tank (2), one side of the water tank (2) is provided with a water inlet pipe, and the bottom of the water tank (2) is installed with a nozzle (3).

3. A rare earth roasting flue gas purification device according to claim 1, characterized in that: An air intake pipe (4) is provided on one side of the main housing (1), the air intake pipe (4) is opposite to the double-layer filter box (7), a clamping plate is provided on the top of the inner cavity of the main housing (1), and the clamping plate and the limiting frame (6) correspond to each other.

4. A rare earth roasting flue gas purification device according to claim 2, characterized in that: The anti-splash frame (8) has a trapezoidal shape, a drainage hole (9) is provided at the bottom of the anti-splash frame (8), and a water collecting box (10) is fixedly connected to the bottom of the inner cavity of the main box body (1).

5. A rare earth roasting flue gas purification device according to claim 4, characterized in that: The water collecting box (10) is located directly below the spray head (3); a drainage pipe is provided outside the water collecting box (10), and the drainage pipe passes through the main box body (1).

6. The rare earth roasting flue gas purification device according to claim 1, characterized in that: The exhaust pipe (11) is threadedly sleeved with a sealing ring (13), the sealing door (14) is fixedly connected with a rubber layer (15) inside, and the rubber layer (15) fits in a groove on the outside of the main box (1).

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