CN217188828U

CN217188828U - Flue gas dust removal and desulfurization device for aluminum alloy smelting furnace

Info

Publication number: CN217188828U
Application number: CN202220683481.0U
Authority: CN
Inventors: 宋喜波; 柴明科; 李克振; 荆照锋
Original assignee: Henan Mingsheng New Material Technology Co ltd
Current assignee: Henan Mingsheng New Material Technology Co ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-08-16
Anticipated expiration: 2032-03-25

Abstract

The utility model relates to a flue gas dust removal and desulfurization device for aluminum alloy smelting furnace, including the dust removal desulfurizing tower, regeneration pond and clear solution tank of setting outside the dust removal desulfurizing tower, the lower extreme of dust removal desulfurizing tower is provided with the liquid reserve tank, the lower extreme of liquid reserve tank is connected with the drain pipe that extends to in the regeneration pond, the air inlet has been seted up to the dust removal desulfurizing tower, install flue gas equipartition device in the dust removal desulfurizing tower, flue gas equipartition device includes the frame, two grid nets, the inner wall fixed connection of frame and dust removal desulfurizing tower, the upper and lower both ends at the frame are fixed respectively to two grid nets, be provided with cleaning device on the flue gas equipartition device, be provided with a plurality of spray pipes that have the nozzle in the dust removal desulfurizing tower, the spray pipe is connected with the centrifugal pump and extends in the clear solution tank, the dust removal desulfurizing tower is provided with the defroster. The utility model discloses a set up the grid net, make the flue gas of flowing through the limit wall assemble the tower in the middle of to improve dust removal desulfurization effect, and add cleaning device and be convenient for clean the grille net.

Description

Flue gas dust removal and desulfurization device for aluminum alloy smelting furnace

Technical Field

The utility model belongs to the technical field of aluminum alloy smelting furnace dust collecting equipment, concretely relates to flue gas dust removal and desulfurization device for aluminum alloy smelting furnace.

Background

In the process of aluminum alloy production, an aluminum alloy smelting furnace can generate a large amount of smoke dust, the smoke dust can be discharged after being treated, and the smoke dust contains aluminum ash and SO ₂ If dust removal and desulfurization are not carried out, the environment can be seriously polluted. However, after the flue gas is introduced into the dust removal and desulfurization device, the middle flow velocity of the flue gas in the dust removal and desulfurization device is low, the side wall flow velocity is high, and the coverage rate of the desulfurization solution of the side wall is low, so that the flue gas desulfurization efficiency near the side wall of the dust removal and desulfurization device is low, and the dust removal effect near the side wall of the dust removal and desulfurization device is also poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming prior art not enough and the aluminum alloy is flue gas dust removal desulphurization unit for smelting furnace that provides sets up the grid net, makes the flue gas of flowing through the limit wall assemble the tower in the middle of to improve the dust removal desulfurization effect, and add cleaning device and be convenient for clean to the grid net.

The technical scheme of the utility model as follows:

the flue gas dust removal and desulfurization device for the aluminum alloy smelting furnace comprises a dust removal and desulfurization tower, a regeneration tank and a clear liquid tank which are arranged outside the dust removal and desulfurization tower, wherein the lower end of the dust removal and desulfurization tower is provided with the liquid storage tank, the lower end of the liquid storage tank is connected with a drain pipe which extends into the regeneration tank, the lower end of the dust removal and desulfurization tower is provided with an air inlet which is positioned above the liquid storage tank, a flue gas uniform distribution device which is positioned above the air inlet is arranged in the dust removal and desulfurization tower and comprises a frame and two grid nets, the frame is fixedly connected with the inner wall of the dust removal and desulfurization tower, the two grid nets are respectively fixed at the upper end and the lower end of the frame, a cleaning device is arranged on the flue gas uniform distribution device, a plurality of spray pipes are arranged in the dust removal and desulfurization tower in a penetrating manner at intervals from top to bottom, nozzles are arranged on the spray pipes, and the spray pipes are connected with centrifugal pumps and extend into the clear liquid tank, the upper portion of dust removal desulfurizing tower is provided with the defroster that is located the spray pipe top, the gas vent has been seted up to the upper end of dust removal desulfurizing tower.

Further, cleaning device includes motor, worm wheel, pivot, clean pole, the output shaft of motor with worm coaxial coupling, the worm wheel with pivot coaxial coupling and with the worm meshing, the pivot is rotatable run through two the center of grid net, the one end of clean pole with pivot fixed connection, be provided with on the clean pole with the brush head of grid net contact.

Furthermore, the number of the cleaning rods is four, and every two cleaning rods are respectively positioned on the upper side and the lower side of the grid net and respectively positioned on the left side and the right side of the rotating shaft.

Further, the nozzle is a spiral nozzle and is positioned on the axial line of the dedusting and desulfurizing tower.

Further, a manhole is arranged at the lower end of the dust removal desulfurization tower.

Furthermore, a lime dosing device is arranged outside the regeneration tank.

Further, a caustic soda dosing device is arranged outside the clear liquid pool.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model has the advantages that the arrangement of the grid net is favorable for uniformly distributing the flue gas, so that the flue gas flowing through the side wall is gathered in the middle of the tower, thereby improving the desulfurization efficiency, and the cleaning device is arranged, so that the grid net can be cleaned when the dust removal desulfurization tower is not used, and the accumulation of particles in the flue gas on the grid net is avoided; set up a plurality of spray pipes and nozzle in addition, form the multilayer and spray the section, improve dust removal desulfurization effect, the flue gas after the defroster sets up and will spray carries out gas-liquid separation, and makes the droplet fall back to in the stock solution pond, then arranges to regenerate in the regeneration pond, does benefit to the secondary and uses, the water economy resource.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view of the middle flue gas uniform distribution device of the utility model.

In the figure, 1, a dedusting and desulfurizing tower, 2, an air inlet, 3, a liquid storage tank, 4, a grid net, 5, a spray pipe, 6, a nozzle, 7, a demister, 8, an exhaust port, 9, a connecting pipe, 10, a regeneration tank, 11, a clear liquid tank, 12, a centrifugal pump, 13, a lime dosing device, 14, a caustic soda dosing device, 15, a manhole, 16, a rotating shaft, 17, a motor, 18, a worm, 19, a worm gear, 20, a cleaning rod, 21 and a brush head.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-2, the flue gas dust removal and desulfurization device for the aluminum alloy smelting furnace comprises a dust removal and desulfurization tower 1, a regeneration tank 10 and a clear liquid tank 11 which are arranged outside the dust removal and desulfurization tower 1, wherein a liquid storage tank 3 is arranged at the lower end of the dust removal and desulfurization tower 1, a drain pipe which extends into the regeneration tank 10 is connected with the lower end of the liquid storage tank 3, an air inlet 2 which is positioned above the liquid storage tank 3 is arranged at the lower end of the dust removal and desulfurization tower 1, a flue gas uniform distribution device which is positioned above the air inlet 2 is arranged in the dust removal and desulfurization tower 1, the flue gas uniform distribution device comprises a frame and two grating nets, the frame is fixedly connected with the inner wall of the dust removal and desulfurization tower 1, the two grating nets are respectively fixed at the upper end and the lower end of the frame, a cleaning device is arranged on the flue gas uniform distribution device, a plurality of water spray pipes 5 are arranged in the dust removal and desulfurization tower 1 at intervals up and down, the spray pipe 5 is provided with a nozzle 6, the spray pipe 5 is connected with a centrifugal pump 12 and extends into the clear liquid pool 11, the upper part of the dedusting and desulfurizing tower 1 is provided with a demister 7 positioned above the spray pipe 5, and the upper end of the dedusting and desulfurizing tower 1 is provided with an exhaust port 8;

specifically, three spray pipes 5 are arranged, the three spray pipes 5 penetrate through the dedusting and desulfurizing tower 1 and are connected with the same connecting pipe 9, the connecting pipe 9 is connected with a centrifugal pump 12, the centrifugal pump 12 is connected with a clear liquid tank 11, and the centrifugal pump 12 is a fluoroplastic corrosion-resistant centrifugal pump 12;

specifically, the demister 7 is an S-shaped baffle demister 7, so that fog drops in the flue gas drop into the liquid storage tank 3 under the action of the demister 7, gas-liquid separation is realized, and the flue gas flowing out of the demister 7 is discharged after reaching the demisting requirement;

specifically, a lime dosing device 13 is arranged outside the regeneration tank 10, lime is added into the regeneration tank 10 for regeneration, and a solution formed after precipitation can be used for desulfurization;

specifically, a caustic soda dosing device 14 is arranged outside the clear liquid tank 11, and caustic soda is added into the clear liquid tank 11 and then is used for reacting with flue gas in the dedusting and desulfurizing tower 1 to realize desulfurization;

when the technical scheme is adopted, the flue gas is introduced from the gas inlet 2 of the dust removal and desulfurization tower 1, the flue gas is uniformly distributed through the grid net, meanwhile, the solution in the clear liquid tank 11 is pumped into the dust removal and desulfurization tower 1 by using the centrifugal pump 12 and is sprayed out through the nozzle 6 to carry out desulfurization treatment on the flue gas, meanwhile, the particulate matters in the flue gas are sprayed by water to make the particulate matters sink, the flue gas with fog drops is demisted by the demister 7, the fog drops are collected to form water drops or water flow and fall into the liquid storage tank 3, the gas is discharged from the gas outlet 8 to realize gas-liquid separation, and the solution in the liquid storage tank 3 is discharged into the regeneration tank 10 to be regenerated; wherein, the setting of grid net does benefit to the flue gas equipartition, makes the flue gas that flows through the boundary wall assemble the tower in the middle of to improve desulfurization efficiency, and set up cleaning device, can clean grid net 4 when dust removal desulfurizing tower 1 does not use.

In this embodiment, the cleaning device includes a motor 17, a worm 18, a worm wheel 19, a rotating shaft 16, and a cleaning rod 20, an output shaft of the motor 17 is coaxially connected with the worm 18, the worm wheel 19 is coaxially connected with the rotating shaft 16 and meshed with the worm 18, the rotating shaft 16 rotatably penetrates the centers of the two grid nets, one end of the cleaning rod 20 is fixedly connected with the rotating shaft 16, and a brush head 21 contacting with the grid nets is arranged on the cleaning rod 20; specifically, the motor 17 is arranged outside the dedusting and desulfurizing tower 1, the output shaft of the motor 17 is coaxially connected with a connecting shaft, and the worm 18 is coaxially connected with the connecting shaft, so that the motor 17 drives the worm 18 to rotate, and after the worm wheel 19 is driven to rotate, the rotating shaft 16 rotates along with the worm wheel 19, so that the cleaning rod 20 rotates, and the brush head 21 on the cleaning rod 20 cleans the grille net 4.

In this embodiment, the number of the cleaning rods 20 is four, and every two cleaning rods 20 are respectively located at the upper side and the lower side of the grid mesh and at the left side and the right side of the rotating shaft 16; the upper and lower sides of each grid net 4 can be cleaned simultaneously, thereby improving the cleaning effect.

In this embodiment, the nozzle 6 is a spiral nozzle 6, preferably a solid conical spiral nozzle 6, the spraying angle is 120 °, and the nozzle 6 is located on the central axis of the dust-removing desulfurization tower 1; preferably, three nozzles 6 are evenly arranged at intervals from top to bottom, so that the spraying uniformity of the desulfurizing tower in the dedusting and desulfurizing tower 1 is maintained, and the dedusting and desulfurizing effects are guaranteed.

In this embodiment, the lower extreme of dust removal desulfurizing tower 1 is provided with manhole 15, supplies the maintainer to get into and overhauls in the dust removal desulfurizing tower 1.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The flue gas dust removal and desulfurization device for the aluminum alloy smelting furnace is characterized in that: the device comprises a dedusting and desulfurizing tower, a regeneration tank and a clear liquid tank which are arranged outside the dedusting and desulfurizing tower, wherein the lower end of the dedusting and desulfurizing tower is provided with the liquid tank, the lower end of the liquid tank is connected with a drain pipe which extends into the regeneration tank, the lower end of the dedusting and desulfurizing tower is provided with an air inlet which is positioned above the liquid tank, a flue gas uniform distribution device which is positioned above the air inlet is arranged in the dedusting and desulfurizing tower, the flue gas uniform distribution device comprises a frame and two grid nets, the frame is fixedly connected with the inner wall of the dedusting and desulfurizing tower, the two grid nets are respectively fixed at the upper end and the lower end of the frame, a cleaning device is arranged on the flue gas uniform distribution device, a plurality of spray pipes are arranged in the dedusting and desulfurizing tower at intervals up and down, nozzles are arranged on the spray pipes, the spray pipes are connected with centrifugal pumps and extend into the clear liquid tank, and a demister which is positioned above the spray pipes is arranged at the upper part of the dedusting and desulfurizing tower, and the upper end of the dedusting and desulfurizing tower is provided with an exhaust port.

2. The aluminum alloy is flue gas dust removal desulphurization unit for smelting furnace of claim 1, characterized in that: cleaning device includes motor, worm wheel, pivot, clean pole, the output shaft of motor with worm coaxial coupling, the worm wheel with pivot coaxial coupling and with the worm meshing, the rotatable two that run through of pivot the center of grid net, the one end of clean pole with pivot fixed connection, be provided with on the clean pole with the brush head of grid net contact.

3. The aluminum alloy is flue gas dust removal desulphurization unit for smelting furnace of claim 2, characterized in that: the cleaning rods are four, and every two cleaning rods are respectively positioned on the upper side and the lower side of the grid net and respectively positioned on the left side and the right side of the rotating shaft.

4. The aluminum alloy is flue gas dust removal desulphurization unit for smelting furnace of claim 1, characterized in that: the nozzle is a spiral nozzle and is positioned on the axis of the dedusting and desulfurizing tower.

5. The aluminum alloy is flue gas dust removal desulphurization unit for smelting furnace of claim 1, characterized in that: the lower end of the dedusting and desulfurizing tower is provided with a manhole.

6. The aluminum alloy is flue gas dust removal desulphurization unit for smelting furnace of claim 1, characterized in that: and a lime dosing device is arranged outside the regeneration tank.

7. The aluminum alloy is flue gas dust removal desulphurization unit for smelting furnace of claim 1, characterized in that: and a caustic soda dosing device is arranged outside the clear liquid pool.