CN111623642A - Bauxite high-temperature dust-removing heat-exchanging integrated equipment - Google Patents

Abstract

The invention relates to a bauxite ore high-temperature dust-removing and heat-exchanging integrated equipment, which comprises a gas chamber shell, a flue gas inlet is inclined on one side of the top plate of the gas chamber shell, and the middle part of the inner wall of the gas chamber shell on the opposite side of the flue gas inlet is horizontally connected The impact type flat dust collector, the inner end of the impact type flat dust collector extends to the middle of the air chamber shell; the inner wall of the air chamber shell is surrounded by an impact type dust collecting plate; the bottom of the air chamber shell is connected to the dust collector heat exchanger The upper end of the straight casing is communicated with the blind dust collecting pipe. The invention has the advantages of high heat exchange efficiency, energy saving, good dust removal effect, simple manufacturing process, low production cost and convenient installation, maintenance and cleaning.

Description

Bauxite ore high temperature dust removal and heat exchange integrated equipment

technical field

The invention relates to a high-temperature dust-removal and heat-exchange integrated device for bauxite, which belongs to the technical field of dust-removal and heat-exchange equipment.

Background technique

High-temperature waste gas and dust will be generated during bauxite ore refining. Because alum powder and other particles will accumulate on the heat exchange tube during the recovery of the waste heat of the high-temperature waste gas, the process selection will not be recycled. Due to the current increase in environmental protection requirements, enterprises have to carry out dust recovery, but the cost of dust recovery is relatively high. In order to reduce costs, the waste heat in the exhaust gas is now recovered to generate steam benefits to reduce costs. In this way, not only does the emission meet the standard, but the enterprise removes the operation The cost can also have a certain return.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies in the prior art, and to provide a bauxite ore high temperature dust removal and heat exchange integrated equipment, which can reduce the resistance of flue gas flow and improve the heat exchange and dust removal efficiency.

According to the technical solution provided by the present invention: the bauxite ore high temperature dust removal and heat exchange integrated equipment includes a gas chamber shell, one side of the top plate of the gas chamber shell is inclined to set a flue gas inlet, and the inner wall of the gas chamber shell on the opposite side of the said flue gas inlet is The middle part is horizontally connected to the impact type flat dust collector, and the inner end of the impact type flat dust collector extends to the middle of the air chamber shell; the inner wall of the air chamber shell is surrounded by an impact type dust collecting plate;

The bottom of the air chamber shell is communicated with the upper end of the dust collector heat exchanger, the integrated heat exchanger includes a straight-tube shell, an inner cylinder is fixed in the straight-tube shell, and the upper and lower ends of the inner cylinder are respectively provided with heads , the wall of the inner cylinder is provided with an impact heat exchange and dust removal pipe, the upper end head is connected to the water outlet pipe, and the lower end head is connected to the water inlet pipe; The dust pipe includes a conical shell and a lower ash shell, and the bottom of the lower ash shell is provided with an ash outlet;

The lower end side of the straight casing is provided with a smoke outlet, the upper end of the smoke outlet is provided with an arc-shaped air baffle, one end of the arc-shaped air baffle is connected to the inner wall of the cylinder at the upper end of the smoke inlet, and the other is the arc-shaped air baffle. One end passes through the interior of the cylinder where the cone shell is located and then extends to the interior of the cylinder section where the lower ash shell is located.

Further, a gas distributor is fixed on the air chamber shell, the cross section of the gas distributor is an inverted Y shape, and the gas distributor is located in the air chamber shell and connected to the straight cylinder shell.

Further, the impact type flat dust collector, the impact type dust collector plate and the arc-shaped flat dust collector are all made of high temperature resistant cast iron.

Further, a wear-resistant plate is arranged on the impact-type heat-exchange dust-removing pipe.

Further, a guide tube is arranged in the inner cylinder.

Further, the upper end of the inner cylinder is provided with a wear-resistant cover.

Further, the inner cylinder body is fixed in the straight cylinder casing by a positioning brace provided on the upper part and a support frame provided on the lower part.

Further, a manhole is provided on the air chamber shell.

Further, castables are filled between the inner and outer walls of the shell of the air chamber shell, the straight shell, the conical shell and the lower ash shell.

Compared with the prior art, the present invention has the following advantages:

1. Combine dust equipment with waste heat equipment to remove dust while exchanging heat.

2. Because the heat exchange tube is inserted into the inner package 360°, the volume of the inner package is saved and the heat exchange effect is improved.

3.360° intubation, the angle of the gas channel is large, which reduces the resistance.

4. The removed dust can be directly released at the lower part of the heat exchange equipment, saving space and improving the efficiency of ash extraction.

5. This design is because the gas goes from top to bottom, and the gas can wash away the accumulated dust, which improves the dust removal efficiency.

Description of drawings

Figure 1 is a schematic structural diagram of the present invention.

Description of reference numerals: 1- flue gas inlet, 2- air chamber shell, 3- impact type flat dust collector, 4- impact type dust collector plate, 5- gas distributor, 6- anti-wear cover, 7- head , 8-water outlet pipe, 9-positioning support, 10-wear-proof plate, 11-heat exchange and dust removal pipe, 12-inner cylinder, 13-guide pipe, 14-support frame, 15-water inlet pipe, 16-straight cylinder shell , 17-curved baffle, 18-conical shell, 19-lower ash shell, 20-casting material, 21-manhole, 22-smoke outlet, 23-ash outlet.

Detailed ways

The present invention will be further described below in conjunction with the specific drawings.

As shown in FIG. 1 , the integrated equipment for high temperature dust removal and heat exchange for bauxite ore according to the present invention includes a gas chamber shell 2, and a flue gas inlet 1 is inclined on one side of the top plate of the gas chamber shell 2, and a flue gas inlet 1 is opposite to the gas inlet 1. The middle part of the inner wall of the air chamber shell 2 on the side is laterally connected to the impact type flat dust collector 3, and the inner end of the impact type flat dust collector 3 extends to the middle part of the air chamber shell 2; 4. Both the impact type flat dust collector 3 and the impact type dust collector plate 4 can be made of high temperature resistant cast iron. After the flue gas enters from the flue gas inlet 1 on the top plate, it collides with the impact type flat dust collector 3. It bounces to the impact dust collecting plate 4 on the side wall, and then enters the dust collecting heat exchanger.

The bottom of the air chamber shell 2 communicates with the upper end of the dust collector heat exchanger. The integrated heat exchanger includes a straight shell 16, and an inner shell 12 is fixedly arranged in the straight shell 16. The upper and lower ends of the inner shell 12 Heads 7 are respectively provided, and the wall of the inner cylinder body 12 is provided with an impact heat exchange and dust removal pipe 11, the head 7 at the upper end is connected to the water outlet pipe 8, and the head 7 at the lower end is connected to the water inlet pipe 15; The lower end is communicated with a blind dust collecting pipe, the blind dust collecting pipe includes a conical shell 18 and a lower ash shell 19, and the bottom of the lower ash shell 19 is provided with an ash discharge port 23; Afterwards, it can be opened to discharge the ash.

A smoke outlet 22 is arranged on the lower end side of the straight casing 16, and an arc-shaped air baffle 17 is arranged at the upper end of the smoke outlet 22. The other end of the air baffle 17 passes through the interior of the cylinder where the cone shell 18 is located, and then extends to the interior of the cylinder section where the lower ash shell 19 is located.

A gas distributor 5 is fixed on the gas chamber shell 2 , the cross section of the gas distributor 5 is an inverted Y shape, and the gas distributor 5 is located at the connection between the gas chamber shell 2 and the straight cylinder shell 16 .

The impact type flat dust collector 3, the impact type dust collector plate 4 and the arc-shaped flat dust collector 17 are all made of high temperature resistant cast iron.

A wear-resistant plate 10 is provided on the impact heat exchange and dust removal pipe 11 .

A guide tube 13 is arranged in the inner cylinder 12 . The upper end of the inner cylinder 12 is provided with a wear-resistant cover 6 . A manhole 21 is provided on the air chamber shell 2 .

The inner cylinder 12 is fixed in the straight casing 16 by the positioning brace 9 provided at the upper part and the support frame 14 provided at the lower part.

A castable 20 is filled between the inner and outer walls of the air chamber shell 2 , the straight shell 16 , the conical shell 18 and the lower ash shell 19 , and the castable 20 is a thermal insulation material.

Working process: The high temperature exhaust gas enters the equipment from the flue gas inlet 1, is dedusted by the impact type flat dust collector 3, and then passes through the impact type dust collector plate 4 around the air chamber shell. The bottom of the blind dust collecting pipe is discharged from the flue gas outlet 20 upwards.

The molten dust at about 800 °C is collected by the molten dust collection tray, and after being collected by the surrounding impact dust collecting plates, it enters the high temperature dust removal and heat exchange integrated equipment for dust removal and temperature recovery again, and the temperature drops from 800 °C to 500 °C At this time, the strength of the molten particles is strengthened after the temperature is lowered. Then, the dust removal and heat exchange are carried out again through the integrated equipment of medium temperature dust removal and heat exchange.

It can be understood that the above embodiments are only exemplary embodiments adopted to illustrate the principle of the present invention, but the present invention is not limited thereto. For those skilled in the art, without departing from the spirit and essence of the present invention, various modifications and improvements can be made, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims (9)

1. A high-temperature dust-removing and heat-exchanging integrated device for bauxite ore, characterized in that it comprises a gas chamber shell (2), and one side of the top plate of the gas chamber shell (2) is inclined with a flue gas inlet (1), and the flue gas inlet ( 1) The middle of the inner wall of the air chamber shell (2) on the opposite side is laterally connected to the impact type flat dust collector (3), and the inner end of the impact type flat dust collector (3) extends to the middle of the air chamber shell (2); the air chamber The inner wall of the casing (2) is provided with an impact dust collecting plate (4); The bottom of the air chamber shell (2) is communicated with the upper end of the dust collector heat exchanger, and the integrated heat exchanger includes a straight shell (16), and an inner shell (12) is fixedly arranged in the straight shell (16). The upper and lower ends of the inner cylinder (12) are respectively provided with heads (7), the cylinder wall of the inner cylinder (12) is provided with an impact heat exchange and dust removal pipe (11), and the head (7) at the upper end is connected to the water outlet pipe (8) The head (7) at the lower end is connected to the water inlet pipe (15); the lower end of the straight casing (16) is communicated with a blind dust collecting pipe, and the blind dust collecting pipe comprises a conical casing (18) and a lower The ash shell (19), the bottom of the lower ash shell (19) is provided with an ash port (23); A smoke outlet (22) is arranged on the lower end side of the straight casing (16), an arc-shaped air baffle (17) is arranged at the upper end of the smoke outlet (22), and one end of the arc-shaped air baffle (17) is connected to a On the inner wall of the cylinder at the upper end of the gas inlet, the other end of the arc-shaped gas baffle (17) passes through the interior of the cylinder where the cone shell (18) is located and then extends to the interior of the cylinder segment where the lower ash shell (19) is located. 2. The bauxite mine high temperature dust removal and heat exchange integrated equipment according to claim 1, characterized in that, a gas distributor (5) is fixedly arranged on the gas chamber shell (2), and the cross section of the gas distributor (5) For the inverted Y type, the gas distributor (5) is located in the gas chamber shell (2) and is connected with the straight cylinder shell (16). 3. The bauxite mine high temperature dust removal and heat exchange integrated equipment according to claim 1, characterized in that the impact type flat dust collector (3), the impact type dust collector plate (4) and the arc flat plate dust collector The device (17) is made of high temperature resistant cast iron. 4. The bauxite mine high-temperature dust-removal and heat-exchange integrated equipment according to claim 1, characterized in that, a wear-resistant plate (10) is provided on the impact heat-exchange dust-removal pipe (11). 5. The bauxite mine high temperature dust removal and heat exchange integrated equipment according to claim 1, characterized in that, a guide pipe (13) is arranged in the inner cylinder (12). 6. The high-temperature dust-removing and heat-exchanging integrated equipment for bauxite mines according to claim 1, characterized in that, an anti-wear cover (6) is provided on the upper end of the inner cylinder (12). 7. The bauxite mine high-temperature dust removal and heat exchange integrated equipment according to claim 1, characterized in that, the inner cylinder (12) passes through the positioning support (9) arranged at the upper part and the support frame (9) arranged at the lower part. 14) Fixed in the straight casing (16). 8. The bauxite mine high temperature dust removal and heat exchange integrated equipment according to claim 1, characterized in that a manhole (21) is arranged on the air chamber shell (2). 9. The bauxite mine high temperature dust removal and heat exchange integrated equipment according to claim 1, characterized in that, the air chamber shell (2), the straight cylinder shell (16), the conical shell (18) and the lower ash shell ( A castable (20) is filled between the inner and outer walls of the shell of 19).

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