CN211706412U - Flue gas purifying device - Google Patents

Flue gas purifying device Download PDF

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Publication number
CN211706412U
CN211706412U CN201922230955.7U CN201922230955U CN211706412U CN 211706412 U CN211706412 U CN 211706412U CN 201922230955 U CN201922230955 U CN 201922230955U CN 211706412 U CN211706412 U CN 211706412U
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China
Prior art keywords
flue gas
washing
pipe
gas purification
tower
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Active
Application number
CN201922230955.7U
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Chinese (zh)
Inventor
张志国
仝瑞玺
施章铨
章健
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Tongling Nonferrous Metals Group Co Ltd
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Tongling Nonferrous Metals Group Co Ltd
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Priority to CN201922230955.7U priority Critical patent/CN211706412U/en
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Abstract

The utility model belongs to the technical field of the copper is smelted, in particular to flue gas purification device, including mouth of pipe washing pipe up, be equipped with the nozzle in the washing pipe, the directional washing pipe's of the blowout mouth of nozzle mouth direction, the end and the scrubbing tower intercommunication of washing pipe, the top of scrubbing tower is equipped with the exhanst gas outlet, is equipped with undergauge portion on the flue gas circulation route in the scrubbing tower. The utility model discloses an original demister of undergauge portion replacement has not only reduced the system resistance for threshing energy consumption greatly reduced need not to stop production moreover and changes or clear up the demister, and production efficiency can ensure, and in addition, behind the undergauge portion, the granule desorption rate of particle diameter more than 30 mu m promoted greatly, and the effect of threshing is showing and is promoting.

Description

Flue gas purifying device
Technical Field
The utility model belongs to the technical field of the copper is smelted, in particular to flue gas purification device.
Background
A large amount of SO2 flue gas is generated in the copper smelting process, the flue gas is directly discharged to seriously pollute the air, at present, a dynamic wave scrubber is generally adopted to wash the flue gas, and the flue gas is used for preparing sulfuric acid after being cooled and dedusted. During the washing process, the flue gas enters the washing tank from top to bottom, the washing liquid is reversely sprayed into the airflow from bottom to top, gas-liquid phases reversely collide at a high speed to form a highly turbulent foam area, the contact surface area at the foam area is large and is rapidly updated, so that the temperature of the flue gas is rapidly reduced, most dust particles in the original flue gas are separated and settled after passing through the demister, and the gas is led out from the top of the scrubber. However, because the smoke treatment capacity of the dynamic wave scrubber is large, dust particles can block the demister quickly, the pressure drop of the system is increased, the energy consumption is greatly improved, the demister needs to be stopped frequently during production and cleaned, the time and the labor are consumed, and the production efficiency is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a flue gas purification device can show promotion production efficiency.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a flue gas purification device, includes mouth of pipe washing pipe up, is equipped with the nozzle in the washing pipe, the directional mouth of pipe direction of washing pipe of the blowout mouth of nozzle, and the end and the scrubbing tower intercommunication of washing pipe, the top of scrubbing tower are equipped with the exhanst gas outlet, are equipped with the undergauge portion on the flue gas circulation route in the scrubbing tower.
Compared with the prior art, the utility model discloses there are following technological effect: the reducing part is adopted to replace the original demister, so that the system resistance is reduced, the threshing energy consumption is greatly reduced, the demister does not need to be replaced or cleaned during production halt, the production efficiency is ensured, in addition, after the dust-containing flue gas flows through the reducing part, the particle removal rate of the particle size of more than 30 mu m is greatly improved, and the threshing effect is obviously improved.
Drawings
The contents of the description and the references in the drawings are briefly described as follows:
fig. 1 is a schematic diagram of the present invention.
In the figure: 10. the device comprises a washing pipe, 20 parts of a nozzle, 30 parts of a washing tower, 31 parts of a flue gas outlet, 32 parts of a reducing part, 33 parts of a convex ring, 34 parts of a tower bottom and 36 parts of a sewage pump.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.
A flue gas purification device comprises a washing pipe 10 with an upward pipe orifice, a nozzle 20 is arranged in the washing pipe 10, a spraying port of the nozzle 20 points to the pipe orifice direction of the washing pipe 10, the tail end of the washing pipe 10 is communicated with a washing tower 30, a flue gas outlet 31 is arranged at the top of the washing tower 30, and a reducing part 32 is arranged on a flue gas circulation path in the washing tower 30. The flue gas is fully mixed and reacted with the liquid sprayed by the nozzle 20 in the washing pipe 10, then enters the washing tower 30, is accelerated to generate turbulence in the diameter-reducing part 32, falls down after the dust particles entering the washing tower 30 along with the airflow collide at the turbulence part, flows above the diameter-reducing part 32, and is guided out from the flue gas outlet 31 at the top of the washing tower 30, so that the aim of removing the dust particles in the flue gas is fulfilled.
Preferably, the minimum inner diameter of the reduced diameter portion 32 is 87% to 92% of the inner diameter of the washing column 30.
Preferably, the inner diameter of the washing tower 30 is 3 to 5 times of the inner diameter of the washing pipe 10.
Preferably, the upper surface of the reduced diameter portion 32 is an annular tapered surface that is tapered inward from top to bottom, so that dust particles falling on the reduced diameter portion 32 will fall under the guidance of the upper surface.
Preferably, the tower bottom 34 of the washing tower 30 is an inclined surface, and a drain outlet is arranged at the lowest position of the tower bottom 34 and is communicated with a drain pump 36, so that dust and mud can be conveniently discharged from the tower bottom 34.
In this embodiment, as shown in fig. 1, a convex ring 33 is disposed on the inner wall of the washing tower 30 to form a reduced diameter portion 32, and the lower surface of the reduced diameter portion 32 is parallel to the radial direction of the washing tower 30. In other embodiments, the reduced diameter portion 32 may be formed by radially contracting the wall of the scrubber 30.
In this embodiment, the inner diameter of the washing tower 30 is enlarged, specifically, the inner diameter of the washing pipe 10 is 2.5m, the inner diameter of the washing tower 30 is 9m, and the minimum inner diameter of the reduced diameter portion 32 is 7 m. Thus, the gas velocity of the flue gas in the washing tower 30 is reduced to 0.8-1.5 m/s, the speed is increased at the reducing part 32 to form a turbulent flow area, and the removal rate of particles with the particle diameter of more than 30 micrometers in the gas flowing through the turbulent flow area reaches more than 80-90%.

Claims (8)

1. A flue gas purification device is characterized in that: the device comprises a washing pipe (10) with an upward pipe orifice, wherein a nozzle (20) is arranged in the washing pipe (10), a spraying port of the nozzle (20) points to the pipe orifice direction of the washing pipe (10), the tail end of the washing pipe (10) is communicated with a washing tower (30), a flue gas outlet (31) is arranged at the top of the washing tower (30), and a reducing part (32) is arranged on a flue gas circulation path in the washing tower (30).
2. The flue gas purification device according to claim 1, wherein: the minimum inner diameter of the diameter reducing part (32) is 87-92% of the inner diameter of the washing tower (30).
3. The flue gas purification device according to claim 1 or 2, wherein: the inner diameter of the washing tower (30) is 3-5 times of the inner diameter of the washing pipe (10).
4. The flue gas purification apparatus according to claim 3, wherein: the upper surface of the reducing part (32) is an annular conical surface which is contracted inwards from top to bottom.
5. The flue gas purification device according to claim 4, wherein: the tower bottom (34) of the washing tower (30) is an inclined plane, the lowest part of the tower bottom (34) is provided with a sewage draining outlet, and the sewage draining outlet is communicated with a sewage draining pump (36).
6. The flue gas purification device according to claim 4, wherein: the lower surface of the reduced diameter portion (32) is parallel to the radial direction of the washing tower (30).
7. The flue gas purification device according to claim 6, wherein: the inner wall of the washing tower (30) is provided with a convex ring (33) to form a reducing part (32) or the wall body of the washing tower (30) is radially contracted to form the reducing part (32).
8. The flue gas purification apparatus according to claim 3, wherein: the inner diameter of the washing pipe (10) is 2.5m, the inner diameter of the washing tower (30) is 9m, and the minimum inner diameter of the diameter-reduced part (32) is 7 m.
CN201922230955.7U 2019-12-12 2019-12-12 Flue gas purifying device Active CN211706412U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201922230955.7U CN211706412U (en) 2019-12-12 2019-12-12 Flue gas purifying device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201922230955.7U CN211706412U (en) 2019-12-12 2019-12-12 Flue gas purifying device

Publications (1)

Publication Number Publication Date
CN211706412U true CN211706412U (en) 2020-10-20

Family

ID=72816501

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201922230955.7U Active CN211706412U (en) 2019-12-12 2019-12-12 Flue gas purifying device

Country Status (1)

Country Link
CN (1) CN211706412U (en)

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