CN111589230A - High-temperature dust removal and heat exchange integrated equipment - Google Patents

Abstract

The invention relates to high-temperature dust removal and heat exchange integrated equipment which comprises a gas chamber shell, wherein a smoke inlet is obliquely arranged on the side part of one side of the gas chamber shell, a collision type flat plate dust collector is transversely connected to the inner wall of the gas chamber shell on the same side with the smoke inlet, the inner end of the collision type flat plate dust collector extends to the middle part of the gas chamber shell, and the collision type flat plate dust collector is positioned below the smoke inlet; the inner wall of the air chamber shell is annularly provided with an impact type dust collecting plate; the bottom of the air chamber shell is communicated with the upper end of the dust collection heat exchanger, and the lower end of the straight cylinder shell is communicated with the blind dust collection pipe. The invention has the advantages of high heat exchange efficiency, energy conservation, good dust removal effect, simple manufacturing process, low production cost and convenient installation, maintenance and cleaning.

Description

A high temperature dust removal and heat exchange integrated equipment

technical field

The invention relates to a high-temperature dedusting and heat-exchanging integrated equipment, belonging to the technical field of dedusting and heat-exchanging equipment.

Background technique

In the process of smelting zinc oxide, the proportion of ore is the majority, and the temperature of the ore can only meet the process requirements when the temperature is 1100 ° C. At this time, the zinc has been dissolved and gasified, and will pass through 800mm of smoke and dust. The N-type pipe is naturally cooled and then discharged to the chimney. The waste heat cannot be recovered when the N-type pipe is cooled. The main reason is that the cooled zinc and dust will accumulate on the heat exchange pipe. The waste heat is not recovered.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies in the prior art, and to provide a 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: a high-temperature dust-removal and heat-exchange integrated equipment, comprising a gas chamber shell, one side of the gas chamber shell is obliquely provided with a flue gas inlet, and the inner wall of the gas chamber shell on the same side as the flue gas inlet The upper side is horizontally connected to 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, and the impact type flat dust collector is located below the flue gas inlet; the inner wall of the air chamber shell is surrounded by impact type dust collector;

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 at the connection between the air chamber shell and 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. It can reduce the resistance of flue gas flow.

2. It 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.

3. A dust collecting hood that exceeds the volume of the waste heat recovery device is adopted, and there are multiple dust collecting plates in the hood to recover molten particles. When the dust collecting plate in the hood collects and accumulates to a certain amount, the dust collecting plate can be replaced.

4. When the dust collecting protection plate on the heat exchange tube is full, it can be lifted from the top for replacement. When hanging out, just loosen the lower support, which is convenient and quick.

5. Save investment and return quickly.

6. The equipment is small in size, occupying only 1/20 of the original area.

7. Maintenance is simple and convenient, no need to stop and check, just look at the changes in resistance and temperature and know the internal operation.

8. Long running time, generally no need to replace new equipment for more than 5 years.

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 , a high-temperature dust removal and heat exchange integrated equipment includes a gas chamber shell 2 , and a flue gas inlet 1 is inclined on one side of the gas chamber shell 2 , and a gas chamber on the same side as the flue gas inlet 1 is provided. The impact type flat dust collector 3 is horizontally connected to the inner wall of the housing 2, the inner end of the impact type flat dust collector 3 extends to the middle of the air chamber housing 2, and the impact type flat dust collector 3 is located below the flue gas inlet 1; The inner wall of the casing 2 is provided with a collision type dust collecting plate 4; the collision type flat plate dust collector 3 and the collision type dust collecting plate 4 can be made of high temperature resistant cast iron, and after the flue gas enters from the side flue gas inlet 1 , collides with the impact type flat dust collector 3 and then bounces to the impact type dust collector plate 4 on the side wall, and then enters the dust collector 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 connected 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; when working, the ash discharge port 23 is closed, and when a lot of dust accumulates 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. The high-temperature dust removal and heat exchange integrated equipment is characterized by comprising a gas chamber shell (2), wherein a smoke inlet (1) is obliquely arranged on the side part of one side of the gas chamber shell (2), a collision type flat plate dust collector (3) is transversely connected with the inner wall of the gas chamber shell (2) on the same side with the smoke inlet (1), the inner end of the collision type flat plate dust collector (3) extends to the middle part of the gas chamber shell (2), and the collision type flat plate dust collector (3) is positioned below the smoke inlet (1); the inner wall of the air chamber shell (2) is provided with an impact type dust collecting plate (4) in a surrounding way;

the bottom of the air chamber shell (2) is communicated with the upper end of the dust collection heat exchanger, the integrated heat exchanger comprises a straight cylinder shell (16), an inner cylinder body (12) is fixedly arranged in the straight cylinder shell (16), the upper end and the lower end of the inner cylinder body (12) are respectively provided with an end socket (7), the cylinder wall of the inner cylinder body (12) is provided with a collision type heat exchange dust removal pipe (11), the end socket (7) at the upper end is connected with a water outlet pipe (8), and the end socket (7) at the lower end is connected with a water inlet pipe (15; the lower end of the straight cylinder shell (16) is communicated with a blind dust collecting pipe, the blind dust collecting pipe comprises a conical shell (18) and an ash discharging shell (19), and the bottom of the ash discharging shell (19) is provided with an ash discharging opening (23);

the lower end lateral part of the straight cylinder shell (16) is provided with a smoke outlet (22), the upper end of the smoke outlet (22) is provided with an arc-shaped air baffle (17), one end of the arc-shaped air baffle (17) is connected to the inner wall of the cylinder body positioned at the upper end of the smoke inlet, and the other end of the arc-shaped air baffle (17) penetrates through the inside of the cylinder body positioned at the cone shell (18) and then extends to the inside of the cylinder body positioned at the lower ash shell (19).

2. The integrated equipment for high-temperature dust removal and heat exchange as set forth in claim 1, wherein the gas chamber shell (2) is fixedly provided with a gas distributor (5), the cross section of the gas distributor (5) is inverted Y-shaped, and the gas distributor (5) is positioned on the gas chamber shell and connected with the straight-tube shell (16).

3. The integrated equipment for dust removal and heat exchange at high temperature as set forth in claim 1, wherein the impact type flat dust collector (3), the impact type dust collecting plate (4) and the arc type flat dust collector (17) are made of high temperature resistant cast iron.

4. A high-temperature dust-removing and heat-exchanging integrated device as claimed in claim 1, wherein a wear-resistant plate (10) is arranged on the impact type heat-exchanging dust-removing pipe (11).

5. A high-temperature dust-removing and heat-exchanging integrated device as claimed in claim 1, wherein a draft tube (13) is arranged in the inner cylinder (12).

6. The integrated equipment for dust removal and heat exchange at high temperature according to claim 1, wherein the upper end of the inner cylinder (12) is provided with an anti-abrasion cover (6).

7. The high-temperature dust-removing and heat-exchanging integrated equipment as claimed in claim 1, wherein the inner cylinder (12) is fixed in the straight cylinder shell (16) through a positioning support (9) arranged at the upper part and a support frame (14) arranged at the lower part.

8. A high-temperature dust-removing and heat-exchanging integrated device as claimed in claim 1, wherein a manhole (21) is arranged on the air chamber shell (2).

9. The integrated equipment for high-temperature dust removal and heat exchange as set forth in claim 1, wherein castable (20) is filled between the inner and outer walls of the shell of the air chamber shell (2), the straight-tube shell (16), the conical shell (18) and the lower ash shell (19).

Images