Flue gas purification device for secondary aluminum smelting furnace containing sparks and greasy dirt

Abstract

The utility model relates to the technical field of aluminum processing flue gas purification, in particular to a spark and greasy dirt containing secondary aluminum smelting furnace flue gas purification device which comprises a purification tower body, and a flue gas outlet and a flue gas inlet are formed in the top end and the bottom end of the purification tower body respectively. A first filler layer, a second filler layer and a third filler layer are sequentially arranged in the purification tower body from bottom to top, a pretreatment module is arranged at the bottom end in the purification tower body, a plurality of cooling channels are uniformly arranged on the pretreatment module, a cooling pipeline is embedded in the pretreatment module, and an interception cover is mounted at the bottom end of each cooling channel of the pretreatment module. And a plurality of overflow through holes are formed around the cooling channel of the pretreatment module. According to the smoke purification device for the secondary aluminum smelting furnace containing the sparks and the greasy dirt, the sparks in the smoke can be effectively removed through pretreatment, damage to a follow-up filtering assembly is avoided, meanwhile, the influence of the greasy dirt on a filtering medium is reduced, the overall filtering effect is improved, and the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to aluminum processing flue gas purification technical field, concretely is a kind of containing star, oil stain recycled aluminum smelting furnace flue gas purification device. BACKGROUND

[0002] In the recycled aluminum processing process, the flue gas generated by smelting furnace contains a large amount of dust, oil mist and harmful substances such as star, and effective flue gas purification device is crucial to protect production safety and environmental protection.

[0003] The existing recycled aluminum smelting furnace flue gas purification technology reduces pollutants in flue gas to some extent, but there are still significant problems in treating flue gas containing stars and oil stains. The presence of stars can easily cause the burning of filter materials or shorten their service life, especially under high temperature conditions, which can also cause fire risk. Oil stains adhere to the surface of the filter medium, not only affecting the filtering effect, but also increasing the cleaning difficulty and frequency, thereby increasing the operating cost. SUMMARY

[0004] The utility model aims at providing a kind of containing star, oil stain recycled aluminum smelting furnace flue gas purification device to solve the problems of the current recycled aluminum smelting furnace flue gas purification device in the actual application, which contains a large amount of stars in flue gas, which can easily cause the burning of filter materials or shorten their service life, and oil stains adhere to the surface of the filter medium, which affects the filtering effect.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a kind of containing star, oil stain recycled aluminum smelting furnace flue gas purification device, including purification tower body, the top and bottom of the purification tower body are respectively provided with smoke outlet and smoke inlet, the first filler layer, the second filler layer and the third filler layer are sequentially provided inside the purification tower body from bottom to top, the bottom of the first filler layer, the second filler layer and the third filler layer are connected with atomizing nozzle through main liquid supply pipe, and the bottom end of the inside of the purification tower body is provided with a pretreatment module, the pretreatment module is uniformly provided with a plurality of cooling channels and embedded with cooling pipeline, the cooling channel bottom end of the pretreatment module is installed with intercepting cover, and a plurality of overflow through holes are provided around the cooling channel of the pretreatment module.

[0006] Preferably, the top of the pretreatment module is provided with a circular recess, and the circular recess of the pretreatment module is detachably installed with a dirt screen at the mouth.

[0007] Preferably, the cooling channel bottom end of the pretreatment module is provided with a threaded interface, and the outer wall of the top end of the intercepting cover is provided with a threaded structure matched with the threaded interface.

[0008] Preferably, the interception cover is in an overall arched structure, and a filter screen is fixedly installed at the rim of the bottom end of the interception cover by screws.

[0009] Preferably, the inner wall of the cooling pipeline is provided with a plurality of annular groove slots, and the outer wall of the cooling pipeline is attached to the inner wall of the cooling channel of the pretreatment module.

[0010] Preferably, each group of overflow through holes is provided with four overflow through holes, and the overflow through holes are uniformly arranged around the cooling channel of the pretreatment module.

[0011] Compared with the prior art, the beneficial effects of the present application are that the device can effectively remove sparks in the flue gas through pretreatment, avoid damage to the subsequent filter assembly, reduce the influence of oil stains on the filter medium, improve the overall filtering effect, and reduce the maintenance cost. The device is provided with a pretreatment module at the bottom end of the purification tower body, and the cooling pipeline and the interception cover in the pretreatment module are designed, and the physical interception of the filter screen ensures that the flue gas is effectively purified before entering the subsequent filler layer, further improves the purification efficiency and the reliability of the equipment, and the oil stain particles in the flue gas are physically intercepted under the action of the interception cover and the dirt screen. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structure schematic view of the device.

[0013] Figure 2 It is an internal structure schematic view of the pretreatment module of the device.

[0014] Figure 3 It is a top view structure schematic view of the pretreatment module of the device.

[0015] Figure 4 It is a bottom structure schematic view of the interception cover of the device.

[0016] In the figure: 1, purification tower body; 2, smoke outlet; 3, smoke inlet; 4, atomizing nozzle; 5, first filler layer; 6, second filler layer; 7, third filler layer; 8, main liquid supply pipe; 9, dirt screen; 10, pretreatment module; 11, recess; 12, cooling pipeline; 13, interception cover; 14, threaded interface; 15, overflow through hole; 16, filter screen. DETAILED DESCRIPTION

[0017] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0018] Please refer to Figures 1-4The utility model provides a technical scheme: a kind of containing star, oil dirt regenerative aluminium smelting furnace flue gas purification device, including purification tower body 1, and the top end and bottom end of purification tower body 1 are equipped with smoke outlet 2 and smoke inlet 3 respectively, and first filler layer 5, second filler layer 6 and third filler layer 7 are sequentially equipped in purification tower body 1 inside from bottom to top, and the bottom of first filler layer 5, second filler layer 6 and third filler layer 7 are connected with atomizing spray pipe 4 by main liquid supply pipe 8, first filler layer 5 uses high-temperature-resistant, high-strength material, such as ceramic fiber or stainless steel wire mesh, to intercept larger size particulate matter, second filler layer 6 uses high adsorption performance material, such as activated carbon or porous ceramic, these materials can effectively adsorb oil mist and organic compounds in flue gas, third filler layer 7 uses high-density filter material, such as nanofiber membrane or fine metal mesh, and the bottom end in purification tower body 1 inside is equipped with pretreatment module 10, and pretreatment module 10 is uniformly equipped with a plurality of cooling channels and is embedded with cooling pipeline 12, cooling pipeline 12 is made of high-thermal-conductivity metal material (such as copper alloy), and the bottom end of the cooling channel of pretreatment module 10 is equipped with intercepting cover 13, and the periphery of the cooling channel of pretreatment module 10 is equipped with a plurality of overflow through holes 15, when flue gas enters the inside of purification tower body 1 through smoke outlet 2, first pass through a plurality of cooling channels on pretreatment module 10 and contact with cooling pipeline 12, main liquid supply pipe 8 is connected with external liquid supply equipment at this time, and cooling water is transported to three atomizing spray pipes 4, cooling water falls into the bottom end of purification tower body 1 and overflow through a plurality of overflow through holes 15 around pretreatment module 10, and exchanges heat with cooling pipeline 12, so that high-temperature flue gas is rapidly reduced to suitable temperature, to avoid the influence of star on subsequent filter components, and reduce the adhesion of oil dirt, at the same time, intercepting cover 13 on pretreatment module 10 effectively removes oil dirt particles in flue gas by physical interception, reduces its influence on filter medium, so that the entire purification device can efficiently remove harmful substances in flue gas, avoid filter material burning or service life shortening, and reduce maintenance cost, improve overall filtration effect, the top of pretreatment module 10 is equipped with circular recess 11, and detachable installation is equipped with dirt screen 9 at the top of the lip of pretreatment module 10, the material of dirt screen 9 can select high-temperature-resistant metal alloy material with good mechanical strength, so that oil dirt particles in flue gas can be effectively intercepted, the dirt screen 9 of this structure can also further effectively remove oil dirt particles in flue gas by physical interception, further ensure the effect of oil dirt removal of flue gas, and facilitate regular disassembly and cleaning, so as to improve the filtration effect of the entire purification device and reduce maintenance cost, the bottom end of the cooling channel of pretreatment module 10 is equipped with screw interface 14, and the outer wall of the top end of intercepting cover 13 is equipped with screw structure matched with screw interface 14, the intercepting cover 13 of this structure can be quickly disassembled and assembled at the bottom end of the cooling channel of pretreatment module 10 through screw interface 14, and disassembly and assembly are more convenient, intercepting cover 13 is in whole arched structure,A coarse filter 16 is fixedly installed at the edge of the bottom end of the interception cover 13 by screws. In this structure, when the flue gas passes through the cooling channel of the pretreatment module 10, it first passes through the arched interception cover 13. The arched structure increases the contact area between the flue gas and the cooling pipe 12, thereby improving the cooling efficiency. At the same time, the coarse filter 16 can effectively intercept larger particles and oil in the flue gas to prevent them from entering the cooling channel, thereby ensuring the cooling effect. The inner wall of the cooling pipe 12 is provided with a number of annular grooves, and the outer wall of the cooling pipe 12 fits the inner wall of the cooling channel of the pretreatment module 10. This structure allows the flue gas to be in close contact with the outer wall of the cooling pipe 12 when passing through the cooling channel of the pretreatment module 10. The annular groove increases the surface area of ​​the inner wall of the cooling pipe 12, thereby increasing the contact area between the flue gas and the cooling medium and accelerating the heat exchange rate. Each group of overflow holes 15 is equipped with four overflow holes 15, and the overflow holes 15 are evenly distributed around the cooling channel of the pre-treatment module 10. This structure of overflow holes 15 ensures uniform distribution of cooling water within the pre-treatment module 10, improves the cooling effect, ensures that high-temperature flue gas can be quickly cooled to an appropriate temperature, and prevents sparks from affecting subsequent filter components.

[0019] Working principle: When using the flue gas purification device for the recycled aluminum smelting furnace containing sparks and oil, the flue gas first enters the interior of the purification tower body 1 through the smoke inlet 3, and first passes through the arched interception cover 13 and contacts the coarse filter 16. The coarse filter 16 intercepts larger particles and oil, and then passes through several cooling channels on the pretreatment module 10 and contacts the cooling pipe 12. At this time, the main liquid supply pipe 8 is connected to the external liquid supply equipment to transport cooling water to the three atomizing nozzles 4. The cooling water falls into the bottom of the purification tower body 1 and overflows through several overflow holes 15 around the pretreatment module 10, and exchanges heat with the cooling pipe 12, quickly reducing the high-temperature flue gas to an appropriate temperature. Then the flue gas continues to rise and contacts the dirt-isolating mesh 9. The dirt-isolating mesh 9 again removes the oil particles in the flue gas by physical interception. Then the flue gas contacts the first packing layer 5, the second packing layer 6 and the third packing layer 7 in turn. Finally, the purified flue gas is discharged through the smoke outlet 2, thereby completing a series of tasks.

[0020] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for purifying flue gas from a smelting furnace of recycled aluminum containing sparks and oil stains, comprising a purification tower body (1), the top end and the bottom end of the purification tower body (1) are respectively provided with a smoke outlet (2) and a smoke inlet (3), characterized in that: The purification tower body (1) is sequentially provided with a first packing layer (5), a second packing layer (6) and a third packing layer (7) from bottom to top, the bottom of the first packing layer (5), the second packing layer (6) and the third packing layer (7) is connected with an atomizing nozzle (4) through a main liquid supply pipe (8), and the bottom end of the purification tower body (1) is provided with a pretreatment module (10), the pretreatment module (10) is uniformly provided with a plurality of cooling channels and is embedded with a cooling pipeline (12), the cooling channel bottom end of the pretreatment module (10) is provided with an intercepting cover (13), and a plurality of overflow through holes (15) are arranged around the cooling channel of the pretreatment module (10).

2. The device for purifying flue gas of a smelting furnace containing fire stars and oil stains and regenerated aluminum according to claim 1, characterized in that: The top of the pretreatment module (10) is provided with a circular recess, and the circular recess of the pretreatment module (10) is detachably provided with a dirt screen (9) at the edge.

3. The device for purifying flue gas of a smelting furnace containing fire stars and oil stains and regenerated aluminum according to claim 1, characterized in that: The bottom end of the cooling channel of the pretreatment module (10) is provided with a threaded interface (14), and the outer wall of the top end of the intercepting cover (13) is provided with a threaded structure matched with the threaded interface (14).

4. The device for purifying flue gas of smelting furnace containing fire star and oil stain regenerated aluminum according to claim 1, characterized in that: The intercepting cover (13) is in an overall arc structure, and the edge of the bottom end of the intercepting cover (13) is fixedly provided with a coarse filter screen (16) through screws.

5. The device for purifying flue gas of smelting furnace containing fire star and oil stain regenerated aluminum according to claim 1, characterized in that: The inner wall of the cooling pipeline (12) is provided with a plurality of annular groove slots, and the outer wall of the cooling pipeline (12) is matched with the inner wall of the cooling channel of the pretreatment module (10).

6. The device for purifying flue gas of a smelting furnace containing fire stars and oil stains and regenerated aluminum according to claim 1, characterized in that: Each group of overflow through holes (15) is provided with four overflow through holes (15), and the overflow through holes (15) are uniformly arranged around the cooling channel of the pretreatment module (10).

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