Electric furnace flue gas dust removal device

Abstract

The utility model discloses a flue gas dust removal device for an electric furnace, and aims to solve the problems of low dust removal efficiency, waste of water resources, easiness in blockage of equipment and the like in the prior art. The device comprises a dust removal box body, an aeration filtering assembly, a vibration assembly, a precipitation assembly and a spraying assembly. Flue gas enters the aeration pipe through the flue gas inlet pipe, is aerated in water, is refined and vibrated by the steel wire filter screen, and then is mixed with water mist sprayed by the atomizing nozzle to sink, so that efficient dust removal is realized. And the settled clarified water is pumped by a circulating water pump for spraying, so that the cyclic utilization of water resources is realized. The device has the advantages of high-efficiency dust removal, energy conservation, environmental protection, blockage prevention and the like, is suitable for treating the flue gas of the electric furnace, and has important significance on environmental protection.

Description

TECHNICAL FIELD

[0001] The utility model relates to an industrial flue gas treatment equipment, especially an electric furnace flue gas dust removal device. BACKGROUND

[0002] In industrial production, electric furnaces are widely used in metal smelting, heating and other processes, but the flue gas generated by the electric furnaces contains a large amount of dust, harmful gases and other particulate matters, which causes serious harm to the environment and human health. Traditional electric furnace flue gas treatment methods mostly use simple wet dust removal or dry dust removal, but there are problems such as low dust removal efficiency, waste of water resources, and easy blockage of equipment. For example, the wet dust removal system often causes unstable water film and poor dust removal effect due to high flue gas temperature and high dust content; dry dust removal may frequently replace filter bags due to blockage, increasing operating costs. Therefore, it is of great practical significance to develop an electric furnace flue gas dust removal device that is efficient, energy-saving and environmentally friendly. SUMMARY

[0003] The utility model aims at providing an electric furnace flue gas dust removal device.

[0004] To achieve the above-mentioned purpose, the utility model is implemented according to the following technical scheme:

[0005] The utility model discloses a dust removal box body, aeration filter assembly, vibration assembly, sedimentation assembly and spray assembly, the aeration filter assembly is arranged in the lower section of the dust removal box body, the drive end of the vibration assembly is connected with the aeration filter assembly, the sedimentation assembly is connected with the lower end of the dust removal box body, the spray assembly is connected with the upper section in the dust removal box body and the sedimentation assembly, the top of the dust removal box body is provided with an air inlet and air outlet, the air inlet end of the aeration filter assembly is connected with electric furnace flue gas.

[0006] Further, the aeration filter assembly includes a flue gas inlet pipe, a flue gas aeration pipe and a steel wire filter screen, one end of the flue gas inlet pipe is connected with electric furnace flue gas, the other end of the flue gas inlet pipe is connected with the air inlet end of the flue gas aeration pipe, the flue gas aeration pipe is located in the lower section of the dust removal box body, the steel wire filter screen is located in the dust removal box body and above the flue gas aeration pipe, and the steel wire filter screen is connected with the vibration assembly.

[0007] The vibration assembly includes a filter screen support, a vibration connecting rod, an eccentric wheel and an eccentric wheel driving motor, the upper end of the filter screen support is fixedly connected with the upper end of the steel wire filter screen, the upper end of the filter screen support is rotatably connected with the lower end of the vibration connecting rod, the upper end of the vibration connecting rod is rotatably connected with the eccentric shaft of the eccentric wheel, the central shaft of the eccentric wheel is connected with the rotating shaft of the eccentric wheel driving motor, and the eccentric wheel driving motor is fixed on the dust removal box body.

[0008] The precipitation assembly comprises a precipitation tank, an inclined bottom plate of a water tank, the precipitation tank is arranged on one side of the dust removal box body, one side of the bottom of the dust removal box body is connected with one side of the bottom of the precipitation tank, the inclined bottom plate of the water tank is arranged on the bottom in the dust removal box body, and the low side of the inclined bottom plate of the water tank is close to the precipitation tank.

[0009] The spray assembly comprises a circulating water pump and an atomizing nozzle, the water inlet end of the circulating water pump is connected with the upper section in the precipitation tank, the water outlet end of the circulating water pump is connected with the atomizing nozzle, and the atomizing nozzle is located in the upper section in the dust removal box body.

[0010] As an improvement, the gas inlet end of the flue gas inlet pipe is connected with the flue gas of the electric furnace through a gas inlet induced draft fan.

[0011] The electric furnace flue gas dust removal device has the advantages that:

[0012] Compared with the prior art, the electric furnace flue gas dust removal device has the following remarkable technical effects:

[0013] High-efficiency dust removal: through the synergistic effect of the aeration filtration assembly and the vibration assembly, the flue gas is fully aerated in water and subjected to refinement and vibration treatment through the steel wire filter screen, so that the particulate matters and harmful substances in the flue gas can be efficiently dissolved and precipitated, and the dust removal efficiency is significantly improved.

[0014] Water resource recycling: the precipitation assembly is combined with the spray assembly, the clear water in the precipitation tank is extracted by the circulating water pump and then used for atomizing nozzle spraying, so that the water resource recycling is realized, and the water cost is saved.

[0015] Prevent clogging: the vibration design of the steel wire filter screen effectively prevents the particulate matters in the flue gas from adhering, reduces the risk of filter screen clogging, prolongs the service life of the equipment, and reduces the maintenance cost.

[0016] Energy saving and environmental protection: the entire dust removal process does not need to add additional chemical agents, the secondary pollution to the environment is reduced, the energy consumption is reduced, and the environmental protection requirement is met. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 is a cross-sectional structure schematic view of the utility model;

[0018] Fig. 2 is an external one side structure schematic view of the utility model;

[0019] Fig. 3 is an external other side structure schematic view of the utility model.

[0020] In the figure: dust removal box 1, flue gas inlet pipe 2, flue gas aeration pipe 3, steel wire filter screen 4, filter screen support 5, vibration connecting rod 6, eccentric wheel 7, sedimentation tank 8, circulating water pump 9, atomizing nozzle 10, air inlet and exhaust port 11, eccentric wheel drive motor 12, air inlet induced draft fan 13, water tank inclined bottom plate 14. DETAILED DESCRIPTION

[0021] The utility model will be further described below in combination with the drawings and specific embodiments, the illustrative embodiments of the utility model and the description are used to explain the utility model, but not as the limitation of the utility model.

[0022] As Figs. 1-3 Indicated: the utility model includes dust removal box 1, aeration filter subassembly, vibration subassembly, precipitation subassembly and sprinkling subassembly, the aeration filter subassembly sets up in the lower section of dust removal box 1, the drive end of vibration subassembly is connected with aeration filter subassembly, precipitation subassembly is connected with the lower end of dust removal box 1, sprinkling subassembly is connected with the upper section in precipitation subassembly and dust removal box 1, the top of dust removal box 1 is provided with air inlet and exhaust port 11, the air inlet end of aeration filter subassembly is connected with electric furnace flue gas.

[0023] Further, the aeration filter subassembly includes flue gas inlet pipe 2, flue gas aeration pipe 3, steel wire filter screen 4, one end of flue gas inlet pipe 2 is connected with electric furnace flue gas, the other end of flue gas inlet pipe 2 is connected with the air inlet end of flue gas aeration pipe 3, flue gas aeration pipe 3 is located in the lower section in dust removal box 1, steel wire filter screen 4 is located in dust removal box 1 and is located above flue gas aeration pipe 3, steel wire filter screen 4 is connected with vibration subassembly.

[0024] Vibration subassembly includes filter screen support 5, vibration connecting rod 6, eccentric wheel 7, eccentric wheel drive motor 12, filter screen support 5 is fixedly connected with the upper end of steel wire filter screen 4, the upper end middle part of filter screen support 5 is rotatably connected with the lower end of vibration connecting rod 6, the upper end of vibration connecting rod 6 is rotatably connected with the eccentric shaft of eccentric wheel 7, the middle shaft of eccentric wheel 7 is connected with the rotating shaft of eccentric wheel drive motor 12, and eccentric wheel drive motor 12 is fixed on dust removal box 1.

[0025] The precipitation subassembly includes sedimentation tank 8, water tank inclined bottom plate 14, the sedimentation tank 8 is arranged on one side of the dust removal box 1, the bottom side of the dust removal box 1 is connected with the bottom side of the sedimentation tank 8, the water tank inclined bottom plate 14 is arranged on the bottom of the dust removal box 1, the low side of the water tank inclined bottom plate 14 is close to the sedimentation tank 8, and the upper section in the sedimentation tank 8 is connected with the sprinkling subassembly.

[0026] The spray assembly comprises a circulating water pump 9 and an atomizing nozzle 10, the water inlet end of the circulating water pump 9 is connected with the upper section in the sedimentation tank 8, the water outlet end of the circulating water pump 9 is connected with the atomizing nozzle 10, and the atomizing nozzle 10 is located in the upper section in the dust removal box body 1.

[0027] As an improvement, the gas inlet end of the flue gas inlet pipe 2 is connected with the flue gas of the electric furnace through the gas inlet induced draft fan 13.

[0028] The working principle of the utility model is as follows:

[0029] In use, the flue gas of the electric furnace is connected with the flue gas inlet pipe 2, if the flue gas pressure is low, the flue gas is connected with the flue gas inlet pipe 2 through the gas inlet induced draft fan 13, the flue gas is input into the flue gas aeration pipe 3 through the flue gas inlet pipe 2, the flue gas aeration pipe 3 is located in the lower section in the dust removal box body 1, the filter water is injected into the dust removal box body 1, the flue gas is aerated in the water, the flue gas is fully mixed with the water, the material of the flue gas is dissolved in the water while being cooled, the flue gas aerated in the water is directly discharged from the water surface, and the effect is not ideal, therefore, the steel wire filter screen 4 is arranged above the flue gas aeration pipe 3, the steel wire filter screen 4 is immersed in the water, the bubbles are further refined after passing through the steel wire filter screen 4, the flue gas can be fully dissolved, the bubbles are refined to a certain extent under the condition that the steel wire filter screen 4 does not vibrate, a part of the flue gas is attached to the steel wire filter screen 4, therefore, the steel wire filter screen 4 is vibrated in the water, the bubbles are further refined, and the flue gas is further fully dissolved, the flue gas is not easily attached to the steel wire filter screen 4 along with the vibration of the steel wire filter screen 4, the vibration drives the eccentric wheel 7 to rotate through the eccentric wheel driving motor 12, the eccentric shaft of the eccentric wheel 7 drives the vibration connecting rod 6 to move up and down, so as to drive the filter screen support 5 and the steel wire filter screen 4 to move up and down, the filter screen support 5 is used for providing strength support for the steel wire filter screen 4, the flue gas is atomized and sprayed through the atomizing nozzle 10 after being aerated and filtered, the flue gas is mixed with the water mist in the last step and then sinks, the purified flue gas is discharged from the gas inlet and gas outlet 11, after the flue gas is mixed with the water in the dust removal box body 1, the particulate matters and other materials in the flue gas are precipitated in the water to a certain extent, the water is conducted to the sedimentation tank 8 for precipitation, the water tank inclined bottom plate 14 helps the particulate matters in the lower part of the dust removal box body 1 to be discharged into the sedimentation tank 8, so that the later cleaning is facilitated, the clarified water in the upper section of the filter water precipitated in the sedimentation tank 8 is extracted through the circulating water pump 9 and then enters the atomizing nozzle 10 in the upper section of the dust removal box body 1 to be sprayed, so as to be recycled, and the water source is saved.

[0030] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An electric furnace flue gas dedusting device, characterized in that: The dust removal box (1) comprises a dust removal box (1), an aeration filter assembly, a vibration assembly, a sedimentation assembly and a spraying assembly, the aeration filter assembly is arranged in the lower section of the dust removal box (1), the driving end of the vibration assembly is connected with the aeration filter assembly, the sedimentation assembly is connected with the lower end of the dust removal box (1), the spraying assembly is connected with the sedimentation assembly and the upper section in the dust removal box (1), the top of the dust removal box (1) is provided with an air inlet and air outlet (11), the air inlet end of the aeration filter assembly is connected with the electric furnace flue gas.

2. The electric furnace flue gas dedusting device according to claim 1, characterized in that: The aeration filter assembly comprises a flue gas inlet pipe (2), a flue gas aeration pipe (3) and a steel wire filter screen (4), one end of the flue gas inlet pipe (2) is connected with the electric furnace flue gas, the other end of the flue gas inlet pipe (2) is connected with the air inlet end of the flue gas aeration pipe (3), the flue gas aeration pipe (3) is located in the lower section of the dust removal box (1), the steel wire filter screen (4) is located in the dust removal box (1) and above the flue gas aeration pipe (3), and the steel wire filter screen (4) is connected with the vibration assembly.

3. The electric furnace flue gas dedusting device according to claim 2, characterized in that: The vibration assembly comprises a filter screen support (5), a vibration connecting rod (6), an eccentric wheel (7) and an eccentric wheel driving motor (12), the upper end of the filter screen support (5) is fixedly connected with the upper end of the steel wire filter screen (4), the upper end of the filter screen support (5) is rotatably connected with the lower end of the vibration connecting rod (6), the upper end of the vibration connecting rod (6) is rotatably connected with the eccentric shaft of the eccentric wheel (7), the middle shaft of the eccentric wheel (7) is connected with the rotating shaft of the eccentric wheel driving motor (12), and the eccentric wheel driving motor (12) is fixed on the dust removal box (1).

4. The electric furnace flue gas dedusting device according to claim 1, characterized in that: The sedimentation assembly comprises a sedimentation tank (8) and a water tank inclined bottom plate (14), the sedimentation tank (8) is arranged on one side of the dust removal box (1), one side of the bottom of the dust removal box (1) is connected with one side of the bottom of the sedimentation tank (8), the water tank inclined bottom plate (14) is arranged on the bottom of the dust removal box (1), the low side of the water tank inclined bottom plate (14) is close to the sedimentation tank (8), and the upper section in the sedimentation tank (8) is connected with the spraying assembly.

5. The electric furnace flue gas dedusting device according to claim 4, characterized in that: The spraying assembly comprises a circulating water pump (9) and an atomizing nozzle (10), the water inlet end of the circulating water pump (9) is connected with the upper section in the sedimentation tank (8), the water outlet end of the circulating water pump (9) is connected with the atomizing nozzle (10), and the atomizing nozzle (10) is located in the upper section of the dust removal box (1).

6. The electric furnace flue gas dedusting device according to claim 2, characterized in that: The air inlet end of the flue gas inlet pipe (2) is connected with the electric furnace flue gas through an air inlet induced draft fan (13).

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