A high-temperature dust removal and heat exchange integrated equipment

Abstract

The present invention relates to a high-temperature dust removal and heat exchange integrated equipment, comprising an air chamber shell, a flue gas inlet is obliquely arranged on one side of the air chamber shell, an impact-type flat plate dust collector is horizontally connected to the inner wall of the air chamber shell on the same side as the flue gas inlet, the inner end of the impact-type flat plate dust collector extends to the middle of the air chamber shell, and the impact-type flat plate dust collector is located below the flue gas inlet; an impact-type dust collecting plate is arranged on the inner wall of the air chamber shell; the bottom of the air chamber shell is connected to the upper end of the dust collecting heat exchanger, and the lower end of the straight shell is connected to a blind dust collecting pipe. The present 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

Technical Field

[0001] The invention relates to high-temperature dust removal and heat exchange integrated equipment, belonging to the technical field of dust removal and heat exchange equipment. Background Art

[0002] In the process of smelting zinc oxide, the proportion of ore is the majority, and the temperature of the ore must be 1100℃ to meet the process requirements. At this time, the zinc has been dissolved and gasified, and will be naturally cooled through an 800mm N-shaped pipeline with flue gas and dust, and then discharged to the chimney. The waste heat during cooling through the N-shaped pipeline cannot be recovered. The main reason is that the cooled zinc and dust will accumulate on the heat exchange tube. Therefore, the waste heat in the flue gas has not been recovered until now. Summary of the invention

[0003] 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 that can reduce the resistance of flue gas flow and improve the heat exchange and dust removal efficiency.

[0004] According to the technical solution provided by the present invention: a high-temperature dust removal and heat exchange integrated equipment comprises an air chamber shell, a flue gas inlet is obliquely arranged on one side of the air chamber shell, an impact-type flat plate dust collector is horizontally connected to the inner wall of the air chamber shell on the same side as the flue gas inlet, the inner end of the impact-type flat plate dust collector extends to the middle of the air chamber shell, and the impact-type flat plate dust collector is located below the flue gas inlet; an impact-type dust collecting plate is arranged on the inner wall of the air chamber shell;

[0005] The bottom of the air chamber shell is connected to the upper end of the dust collecting heat exchanger, and the integrated heat exchanger includes a straight shell, an inner cylinder is fixedly arranged in the straight shell, and the upper and lower ends of the inner cylinder are respectively provided with heads, and an impact-type heat exchange dust removal pipe is arranged on the cylinder wall of the inner cylinder, the head at the upper end is connected to the water outlet pipe, and the head at the lower end is connected to the water inlet pipe; the lower end of the straight shell is connected to the blind dust collecting pipe, and the blind dust collecting pipe includes a conical shell and a lower ash shell, and an ash discharge port is arranged at the bottom of the lower ash shell;

[0006] A smoke outlet is arranged on the lower side of the straight cylinder shell, and an arc-shaped air baffle is arranged on the upper end of the smoke outlet. One end of the arc-shaped air baffle is connected to the inner wall of the cylinder located at the upper end of the smoke inlet, and the other end of the arc-shaped air baffle passes through the interior of the cylinder where the conical shell is located and extends to the interior of the cylinder section where the lower ash shell is located.

[0007] Furthermore, a gas distributor is fixedly arranged on the gas 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 gas chamber shell and the straight-tube shell.

[0008] Furthermore, the impact-type flat-plate dust collector, the impact-type dust collecting plate and the arc-shaped flat-plate dust collector are all made of high-temperature resistant cast iron.

[0009] Furthermore, an anti-wear plate is provided on the collision type heat exchange and dust removal pipe.

[0010] Furthermore, a flow guide pipe is arranged in the inner cylinder.

[0011] Furthermore, an anti-wear cover is provided at the upper end of the inner cylinder.

[0012] Furthermore, the inner cylinder is fixed in the straight cylinder outer shell by a positioning support arranged at the upper part and a supporting frame arranged at the lower part.

[0013] Furthermore, a manhole is arranged on the air chamber shell.

[0014] Furthermore, castables are filled between the inner and outer walls of the air chamber shell, the straight cylinder shell, the conical shell and the lower ash shell.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. It can reduce the resistance of smoke flow.

[0017] 2. It has the advantages of high heat exchange efficiency, energy saving, good dust removal effect, simple manufacturing process, low production cost, and easy installation, maintenance and cleaning.

[0018] 3. A dust collecting hood that exceeds the volume of the waste heat recovery device is used. There are multiple dust collecting plates inside the hood to recover molten particles. When the dust collecting plates inside the hood collect and accumulate to a certain amount, the dust collecting plates can be replaced.

[0019] 4. When the dust collecting protection plate on the heat exchange tube is full, it can be lifted out from the top for replacement. When lifting out, just loosen the support at the bottom, which is convenient and quick.

[0020] 5. Low investment and quick return.

[0021] 6. The equipment is small in size and occupies only 1 / 20 of the original space.

[0022] 7. Maintenance is simple and convenient. There is no need to stop the machine for inspection. You only need to observe changes in resistance and temperature to understand the internal operating conditions.

[0023] 8. Long operating time, generally no need to replace new equipment for more than 5 years. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention.

[0025] Explanation of the accompanying drawings: 1- flue gas inlet, 2- air chamber shell, 3- impact type flat dust collector, 4- impact type dust collecting plate, 5- gas distributor, 6- anti-wear cover, 7- head, 8- water outlet pipe, 9- positioning support, 10- anti-wear plate, 11- heat exchange dust removal pipe, 12- inner cylinder, 13- guide pipe, 14- support frame, 15- water inlet pipe, 16- straight cylinder shell, 17- arc-shaped air baffle plate, 18- conical shell, 19- ash lower shell, 20- casting material, 21- manhole, 22- flue gas outlet, 23- ash discharge port. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the specific drawings.

[0027] like Figure 1 As shown, a high-temperature dust removal and heat exchange integrated equipment includes an air chamber shell 2, and a flue gas inlet 1 is obliquely arranged on one side of the air chamber shell 2. An impact-type flat-plate dust collector 3 is horizontally connected to the inner wall of the air chamber shell 2 on the same side as the flue gas inlet 1, and the inner end of the impact-type flat-plate dust collector 3 extends to the middle of the air chamber shell 2, and the impact-type flat-plate dust collector 3 is located below the flue gas inlet 1; an impact-type dust collecting plate 4 is arranged on the inner wall of the air chamber shell 2; the impact-type flat-plate dust collector 3 and the impact-type dust collecting plate 4 can both be made of high-temperature resistant cast iron. After the flue gas enters from the side flue gas inlet 1, it collides with the impact-type flat-plate dust collector 3 and then rebounds to the impact-type dust collecting plate 4 on the side wall, and then enters the dust collecting heat exchanger.

[0028] The bottom of the air chamber shell 2 is connected with the upper end of the dust collecting heat exchanger. The integrated heat exchanger includes a straight cylindrical shell 16. An inner cylinder 12 is fixedly arranged in the straight cylindrical shell 16. The upper and lower ends of the inner cylinder 12 are respectively provided with heads 7. An impact-type heat exchange and dust removal pipe 11 is arranged on the cylinder wall of the inner cylinder 12. 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 of the straight cylindrical shell 16 is connected to the blind dust collecting pipe, and the blind dust collecting pipe includes a conical shell 18 and a lower ash shell 19. The bottom of the lower ash shell 19 is provided with an ash discharge port 23; the ash discharge port 23 is closed during operation, and can be opened to discharge the ash when too much dust accumulates.

[0029] A smoke outlet 22 is arranged on the lower side of the straight cylinder shell 16, and an arc-shaped air baffle 17 is arranged on the upper end of the smoke outlet 22. One end of the arc-shaped air baffle 17 is connected to the inner wall of the cylinder located at the upper end of the smoke inlet, and the other end of the arc-shaped air baffle 17 passes through the interior of the cylinder where the conical shell 18 is located and extends to the interior of the cylinder section where the lower ash shell 19 is located.

[0030] The gas distributor 5 is fixedly arranged on the gas chamber shell 2 . The cross section of the gas distributor 5 is an inverted Y-shape. The gas distributor 5 is located at the connection between the gas chamber shell 2 and the straight tube shell 16 .

[0031] The impact-type flat dust collector 3, the impact-type dust collecting plate 4 and the arc-shaped flat dust collector 17 are all made of high-temperature resistant cast iron.

[0032] An anti-wear plate 10 is provided on the collision type heat exchange and dust removal pipe 11 .

[0033] A flow guide pipe 13 is arranged in the inner cylinder 12. An anti-wear cover 6 is arranged at the upper end of the inner cylinder 12. A manhole 21 is arranged on the air chamber outer shell 2.

[0034] The inner cylinder 12 is fixed in the straight cylinder outer shell 16 by means of a positioning support 9 arranged at the upper part and a support frame 14 arranged at the lower part.

[0035] The inner and outer walls of the air chamber shell 2, the straight cylinder shell 16, the conical shell 18 and the lower ash shell 19 are filled with a casting material 20, which is a heat-insulating material.

[0036] Working process: High-temperature exhaust gas enters the equipment from the flue gas inlet 1, passes through the impact-type flat dust collector 3 for dust removal, and then passes through the impact-type dust collecting plates 4 around the air chamber shell to collect dust and enter the lower integrated dust collecting heat exchanger, and then goes up from the bottom of the lower blind dust collecting pipe and is discharged from the equipment from the flue gas outlet 20.

[0037] The molten dust at about 800℃ is collected by the molten dust collection plate and the surrounding impact dust collection plates, and then enters the high-temperature dust removal and heat exchange integrated equipment for dust removal and temperature recovery. The temperature drops from 800℃ to about 500℃. At this time, the strength of the molten particles is enhanced after the temperature drops. Then it passes through the medium-temperature dust removal and heat exchange integrated equipment for dust removal and heat exchange again.

[0038] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. High-temperature dust removal and heat exchange integrated equipment, characterized in that: It comprises an air chamber shell (2), a smoke inlet (1) is obliquely arranged on one side of the air chamber shell (2), an impact-type flat plate dust collector (3) is transversely connected to the inner wall of the air chamber shell (2) on the same side as the smoke inlet (1), the inner end of the impact-type flat plate dust collector (3) extends to the middle of the air chamber shell (2), and the impact-type flat plate dust collector (3) is located below the smoke inlet (1); an impact-type dust collecting plate (4) is arranged on the inner wall of the air chamber shell (2); The bottom of the air chamber shell (2) is connected to the upper end of the dust collecting heat exchanger, and the dust collecting heat exchanger comprises a straight cylindrical shell (16), an inner cylinder (12) is fixedly arranged in the straight cylindrical shell (16), and the upper and lower ends of the inner cylinder (12) are respectively provided with heads (7), and an impact-type heat exchange dust removal pipe (11) is arranged on the cylinder wall of the inner cylinder (12), 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 of the straight cylindrical shell (16) is connected to the blind dust collecting pipe, and the blind dust collecting pipe comprises 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); A smoke outlet (22) is provided at the lower side of the straight cylinder shell (16), and an arc-shaped air baffle (17) is provided at the upper end of the smoke outlet (22). One end of the arc-shaped air baffle (17) is connected to the inner wall of the cylinder located at the upper end of the smoke inlet, and the other end of the arc-shaped air baffle (17) passes through the inside of the cylinder where the conical shell (18) is located and then extends to the inside of the cylinder section where the lower ash shell (19) is located. An anti-wear plate (10) is provided on the impact-type heat exchange dust removal pipe (11); a flow guide pipe (13) is provided in the inner cylinder (12); and the inner cylinder (12) is fixed in the straight cylinder outer shell (16) via a positioning support (9) provided at the top and a support frame (14) provided at the bottom.

2. The 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); the cross section of the gas distributor (5) is an inverted Y-shape; the gas distributor (5) is located at the gas chamber shell and is connected to the straight-tube shell (16).

3. The high-temperature dust removal and heat exchange integrated equipment according to claim 1, characterized in that: The impact-type flat-plate dust collector (3), the impact-type dust collecting plate (4) and the arc-shaped flat-plate dust collector (17) are all made of high-temperature resistant cast iron.

4. The high-temperature dust removal and heat exchange integrated equipment according to claim 1, characterized in that: An anti-wear cover (6) is provided at the upper end of the inner cylinder (12).

5. The high-temperature dust removal and heat exchange integrated equipment according to claim 1, characterized in that: A manhole (21) is provided on the air chamber shell (2).

6. The high-temperature dust removal and heat exchange integrated equipment according to claim 1, characterized in that: Casting material (20) is filled between the inner and outer walls of the air chamber shell (2), the straight cylinder shell (16), the conical shell (18) and the lower ash shell (19).

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