Dedusting and spraying device for converter steelmaking in steelmaking plant

Abstract

The utility model discloses a dedusting and spraying device for converter steelmaking in a steelmaking plant, and relates to the technical field of waste gas treatment. The dust removal device comprises a spray tower, a guide plate used for guiding flue gas is fixedly mounted in the spray tower, and a filter screen used for treating dust in waste gas is arranged in the spray tower and located above the guide plate. Water in the collecting water tank is guided into the annular spray head through the spraying assembly, the water is atomized and sprayed through the annular spray head, atomized water mist forms a water curtain through the annular spray head, waste gas makes full contact with the water curtain through contact between the waste gas and the water curtain, and therefore the waste gas can be recycled. Waste gas in the spraying tower vertically ascends through the guide plate, water mist makes contact with dust in the waste gas, then the dust is wrapped by the water mist and falls into the waste water filtering mechanism under the gravity effect, waste water is filtered through the waste water filtering mechanism, and water is collected through the collecting water tank.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a dust removal spray device for steelmaking in a converter of a steel plant. Background Art

[0002] After the oxygen lances of each converter were filled with slag and could not be used normally, the oxygen lances were lifted to 20 meters for cleaning and the slag on the lance bodies was cut off. During the cleaning process, a large amount of smoke and dust was generated and drifted into the air; during the feeding process of the refining furnace production conveyor belt, most of the dust was removed and purified by the dust removal hood and dust removal pipeline above the conveyor belt, but some dust still overflowed and could not be eliminated.

[0003] Direct emissions will cause serious pollution to the atmosphere and soil, seriously damage the ecological environment, and affect human health. Therefore, dust removal of many steel-making converter flue gases is completed by spraying. However, the contact area between the water mist sprayed from the spray end of the existing spray tower and the flue gas is small. When the dust concentration in the flue gas is high, the dust removal effect is poor.

[0004] For this purpose, a steelmaking converter steelmaking dust removal spray device is proposed. Utility Model Content

[0005] The purpose of the present invention is to solve the problems raised in the above background technology, and to provide a dust removal spraying device for converter steelmaking in a steel plant.

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0007] A steelmaking converter steelmaking dust removal spray device in a steel plant comprises a spray tower, wherein a guide plate for guiding flue gas is fixedly installed inside the spray tower, a filter for treating dust in the exhaust gas is arranged inside the spray tower and above the guide plate, a water collection tank for collecting water is fixedly installed on the inner wall of the spray tower and below the guide plate, a spray assembly for conveying water is arranged on the surface of the spray tower and the collection water tank, an annular nozzle for atomizing water is fixedly installed on the output end of the spray assembly through the spray tower and the guide plate, the annular nozzle is located on the inner wall of the guide plate channel and is equidistantly arranged, and a wastewater filtering mechanism for filtering and discharging wastewater is fixedly installed on the inner wall of the collection water tank.

[0008] Furthermore, the spray tower includes a tower body, an air inlet pipe for exhaust gas to enter the tower body is fixedly installed on the surface of the tower body, and an exhaust pipe for exhausting the exhaust gas is provided at the top of the tower body.

[0009] Furthermore, the spray assembly includes a first pipe, the left side wall of the collection water tank is provided with a first pipe, and the free end of the first pipe passes through the spray tower and is fixedly installed with a branch pipe, the surface of the first pipe is embedded with a pump body, and the other end of the pump body is observed. The left side wall of the spray tower and the guide plate is fixedly installed with an annular nozzle.

[0010] Furthermore, the wastewater filtering mechanism includes a funnel, a funnel is fixedly installed on the inner wall of the collecting water tank, a drainage pipe is fixedly installed on the bottom end of the funnel, the bottom end of the drainage pipe observes the inner bottom of the collecting water tank and extends to the outside of the collecting water tank, a filter hole is opened on the surface of the funnel, and a filter screen is provided inside the filter hole, and a solenoid valve is embedded in the surface of the drainage pipe.

[0011] Furthermore, the guide plate has an I-shaped structure, and the annular nozzles are arranged at equal distances on the inner wall of the guide plate.

[0012] Furthermore, the water collecting tank is located below the air inlet pipe, and a drainage gap exists between the surface of the funnel and the inner wall of the water collecting tank.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The utility model introduces the exhaust gas discharged from the converter of the steel plant into the interior of the spray tower, introduces the water in the collection water tank into the interior of the annular nozzle through the spray assembly, and then atomizes and sprays the water through the annular nozzle, and then forms the atomized water mist into a water curtain through the annular nozzle, and the exhaust gas and the water curtain come into contact with each other so that the exhaust gas can fully contact the water curtain, and the exhaust gas in the spray tower rises vertically through the guide plate, and the water mist comes into contact with the dust in the exhaust gas so that the dust is wrapped by the water mist and falls into the wastewater filtering mechanism under the action of gravity, and the wastewater is filtered through the wastewater filtering mechanism and collected through the collection water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 It is a structural diagram of the front view of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the front sectional view of the utility model;

[0018] Figure 4 It is a structural schematic diagram of an enlarged view of part A of the utility model;

[0019] Figure numerals: 1. Spray tower; 101. Tower body; 102. Air inlet pipe; 103. Exhaust pipe; 2. Guide plate; 3. Filter screen; 4. Water collection tank; 5. Spray assembly; 501. First pipeline; 502. Pump body; 503. Branch pipe; 6. Annular nozzle; 7. Wastewater filtering mechanism; 701. Funnel; 702. Filter hole; 703. Drainage pipe; 704. Solenoid valve. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, the terms "first," "second," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.

[0023] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0024] like Figures 1 to 4As shown, the steelmaking converter steelmaking dust removal spray device of the steel plant includes a spray tower 1, a guide plate 2 for guiding the flue gas is fixedly installed inside the spray tower 1, a filter screen 3 for treating dust in the exhaust gas is arranged inside the spray tower 1 and above the guide plate 2, a collection water tank 4 for collecting water is fixedly installed on the inner wall of the spray tower 1 and below the guide plate 2, a spray component 5 for conveying water is provided on the surface of the spray tower 1 and the collection water tank 4, an annular nozzle 6 for atomizing water is fixedly installed on the output end of the spray component 5 through the spray tower 1 and the guide plate 2, the annular nozzle 6 is located on the inner wall of the guide plate 2 channel and the annular nozzles 6 are equidistantly arranged, and a waste water filter 6 for filtering and discharging the waste water is fixedly installed on the inner wall of the collection water tank 4. Water filtering mechanism 7; specifically, the exhaust gas discharged from the converter of the steel plant is introduced into the interior of the spray tower 1, the water in the collection water tank 4 is introduced into the interior of the annular nozzle 6 through the spray assembly 5, and the water is atomized and sprayed through the annular nozzle 6, and the atomized water mist is formed into a water curtain through the annular nozzle 6, and the exhaust gas and the water curtain are in contact so that the exhaust gas can fully contact the water curtain, and the exhaust gas in the spray tower 1 rises vertically through the guide plate 2, and the dust in the exhaust gas is in contact with the water mist so that the dust is wrapped in the water mist and falls into the wastewater filtering mechanism 7 under the action of gravity, and the wastewater is filtered through the wastewater filtering mechanism 7 so that the water is collected through the collection water tank 4, and the vertically rising exhaust gas is filtered through the filter mesh 3 and discharged to the outside of the spray tower 1.

[0025] like Figure 1 、 Figure 2 、 Figure 3 As shown, the spray tower 1 includes a tower body 101, on the surface of which an air inlet pipe 102 for exhaust gas to enter the interior of the tower body 101 is fixedly installed, and the top of the tower body 101 is provided with an exhaust pipe 103 for discharging the exhaust gas; specifically, the exhaust gas is introduced into the interior of the tower body 101 through the air inlet pipe 102, and the treated exhaust gas is discharged through the exhaust pipe 103.

[0026] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4As shown, the spray assembly 5 includes a first pipe 501, and the left side wall of the water collection tank 4 is provided with the first pipe 501, and the free end of the first pipe 501 passes through the spray tower 1 and is fixedly installed with a branch pipe 503, and the surface of the first pipe 501 is inlaid with a pump body 502, and the other end of the pump body 502 is observed. The left side wall of the spray tower 1 and the guide plate 2 is fixedly installed with an annular nozzle 6; specifically, the water in the water collection tank 4 is introduced into the interior of the annular nozzle 6 through the first pipe 501 and the pump body 502 through the pump body 502, and the water is atomized and sprayed through the annular nozzle 6, and the water mist is atomized and sprayed through the annular nozzle 6 to form a water curtain, and the water curtain contacts the exhaust gas to thereby treat the dust in the exhaust gas.

[0027] like Figure 1 、 Figure 2 、 Figure 3 As shown, the wastewater filtering mechanism 7 includes a funnel 701, and the funnel 701 is fixedly installed on the inner wall of the collecting water tank 4. A drainage pipe 703 is fixedly installed on the bottom end of the funnel 701. The bottom end of the drainage pipe 703 observes the inner bottom of the collecting water tank 4 and extends to the outside of the collecting water tank 4. A filter hole 702 is opened on the surface of the funnel 701, and a filter screen is provided inside the filter hole 702. A solenoid valve 704 is embedded on the surface of the drainage pipe 703; specifically, the wastewater passes through the filter screen in the filter hole 702 on the surface of the funnel 701, thereby filtering the dust in the wastewater, so that the water enters the interior of the collecting water tank 4, and the dust is discharged through the drainage pipe 703 by controlling the solenoid valve 704 to open.

[0028] like Figure 3 As shown, the guide plate 2 is in an I-shaped structure, and the annular nozzles 6 are equidistantly arranged on the inner wall of the guide plate 2; specifically, the exhaust gas is guided by the guide plate 2 in the I-shaped structure.

[0029] like Figure 3 As shown, the collecting water tank 4 is located below the air inlet pipe 102, and there is a drainage gap between the surface of the funnel 701 and the inner wall of the collecting water tank 4; specifically, the drainage gap between the surface of the funnel 701 and the inner wall of the collecting water tank 4 facilitates the discharge of filtered water into the interior of the collecting water tank 4.

[0030] In summary: the exhaust gas discharged from the converter of the steel plant is introduced into the interior of the spray tower 1, the water in the collection water tank 4 is introduced into the interior of the annular nozzle 6 through the spray assembly 5, the water is atomized and sprayed through the annular nozzle 6, and the atomized water mist is formed into a water curtain through the annular nozzle 6. The exhaust gas and the water curtain are in contact so that the exhaust gas can fully contact the water curtain. The exhaust gas in the spray tower 1 rises vertically through the guide plate 2, and the water mist comes into contact with the dust in the exhaust gas so that the dust is wrapped in the water mist and falls into the wastewater filter mechanism 7 under the action of gravity. The wastewater is filtered through the wastewater filter mechanism 7 and the water is collected through the collection water tank 4.

[0031] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. Steelmaking converter steelmaking dust removal spray device in steel plant, characterized in that: The invention comprises a spray tower (1), wherein a guide plate (2) for guiding flue gas is fixedly installed inside the spray tower (1), a filter screen (3) for treating dust in the exhaust gas is arranged inside the spray tower (1) and above the guide plate (2), a water collection tank (4) for collecting water is fixedly installed on the inner wall of the spray tower (1) and below the guide plate (2), a spray assembly (5) for conveying water is arranged on the surface of the spray tower (1) and the water collection tank (4), an annular nozzle (6) for atomizing water is fixedly installed on the output end of the spray assembly (5) passing through the spray tower (1) and the guide plate (2), the annular nozzle (6) is located on the inner wall of the guide plate (2) channel and the annular nozzles (6) are arranged at equal distances, and a wastewater filtering mechanism (7) for filtering and discharging wastewater is fixedly installed on the inner wall of the water collection tank (4).

2. The steelmaking converter steelmaking dust removal spraying device according to claim 1, characterized in that: The spray tower (1) comprises a tower body (101), an air inlet pipe (102) for exhaust gas to enter the interior of the tower body (101) is fixedly mounted on the surface of the tower body (101), and an exhaust pipe (103) for exhausting the exhaust gas is provided at the top of the tower body (101).

3. The steelmaking converter steelmaking dust removal spraying device according to claim 1, characterized in that: The spray assembly (5) comprises a first pipe (501), the left side wall of the water collection tank (4) is provided with the first pipe (501), and the free end of the first pipe (501) passes through the spray tower (1) and is fixedly installed with a branch pipe (503), the surface of the first pipe (501) is inlaid with a pump body (502), and the other end of the pump body (502) is fixedly installed with an annular spray head (6) on the left side wall of the spray tower (1) and the guide plate (2).

4. The steelmaking converter steelmaking dust removal spraying device according to claim 2, characterized in that: The wastewater filtering mechanism (7) comprises a funnel (701), the funnel (701) is fixedly mounted on the inner wall of the water collection tank (4), a drainage pipe (703) is fixedly mounted on the bottom end of the funnel (701), the bottom end of the drainage pipe (703) is observed at the inner bottom of the water collection tank (4) and extends to the outside of the water collection tank (4), a filtering hole (702) is opened on the surface of the funnel (701), and a filter screen is arranged inside the filtering hole (702), and a solenoid valve (704) is embedded and mounted on the surface of the drainage pipe (703).

5. The steelmaking converter steelmaking dust removal spraying device according to claim 1, characterized in that: The guide plate (2) has an I-shaped structure, and the annular nozzles (6) are arranged at equal distances on the inner wall of the guide plate (2).

6. The steelmaking converter steelmaking dust removal spraying device according to claim 4, characterized in that: The water collection tank (4) is located below the air inlet pipe (102), and a drainage gap exists between the surface of the funnel (701) and the inner wall of the water collection tank (4).

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