CN221217829U - Converter flue gas purifying system - Google Patents
Converter flue gas purifying system Download PDFInfo
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- CN221217829U CN221217829U CN202323121940.XU CN202323121940U CN221217829U CN 221217829 U CN221217829 U CN 221217829U CN 202323121940 U CN202323121940 U CN 202323121940U CN 221217829 U CN221217829 U CN 221217829U
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- heat exchange
- flue gas
- cooling device
- cooling
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 165
- 239000003546 flue gas Substances 0.000 title claims abstract description 162
- 238000001816 cooling Methods 0.000 claims abstract description 141
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000000428 dust Substances 0.000 claims abstract description 33
- 238000000746 purification Methods 0.000 claims abstract description 20
- 239000012535 impurity Substances 0.000 claims abstract description 15
- 239000007789 gas Substances 0.000 claims description 30
- 239000003517 fume Substances 0.000 claims description 28
- 238000011084 recovery Methods 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 abstract description 12
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 238000009834 vaporization Methods 0.000 description 15
- 230000008016 vaporization Effects 0.000 description 15
- 238000011282 treatment Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000003034 coal gas Substances 0.000 description 2
- 239000011362 coarse particle Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Chimneys And Flues (AREA)
Abstract
The utility model relates to a converter flue gas purification system, which comprises a cooling and impurity removing device, a dust remover and a second heat exchange and cooling device, wherein the cooling and impurity removing device comprises a fire catcher and a first heat exchange and cooling device, and a first heat exchange pipe connected with a water return port of the first heat exchange and cooling device is arranged in the first heat exchange and cooling device; the second heat exchange cooling device is internally provided with a second heat exchange pipe connected with the water outlet of the second heat exchange cooling device, and the water outlet of the second heat exchange cooling device is connected with the water return port of the first heat exchange cooling device so as to convey the water in the second heat exchange pipe after heat exchange with the flue gas to the first heat exchange pipe. The utility model adopts a full dry flue gas purification mode, the condition that the subsequent pipe network and equipment are corroded after the flue gas and water are mixed does not exist, the service life of the equipment is prolonged, and the cooling water in the utility model can exchange heat with the flue gas with different temperatures for multiple times, so that the cooling water can be fully utilized for multiple times, the resources and the cost are saved, and the utility model has better economic benefit.
Description
Technical Field
The utility model relates to the field of converter flue gas treatment, in particular to a converter flue gas purification system.
Background
The converter gas dry dedusting (namely LT dedusting) is used as a treatment method of the converter gas, and the main process flow is as follows: the high-temperature furnace gas generated in the converter steelmaking process is firstly captured by a movable smoke hood, then passes through a vaporization cooling flue, and performs primary cooling treatment on the flue gas while recovering heat in the flue gas; the flue gas cooled by the vaporization cooling flue is subjected to secondary cooling in an evaporative cooling mode, and meanwhile, the flue gas is subjected to coarse dust removal, tempering and other treatments; the flue gas after cooling, coarse dust removal and tempering enters an electrostatic precipitator to carry out fine dust removal, and the flue gas after fine dust removal is sent to a switching station through a axial flow fan to realize the rapid switching of gas diffusion or recovery. Wherein, the recovered gas is recovered to a gas tank after further cooling treatment by a gas cooler.
However, the dry dedusting method of the converter gas adopted at the present stage has the following defects:
1) In the cooling process of the coal gas, under the condition of adopting spraying cooling, the spray water and the flue gas are easy to cause corrosion of a rear coal gas pipe network after being mixed, the leakage risk is increased, and the potential safety hazard is brought.
2) And most of system water is discharged after being used up, so that the system water cannot be recycled, resource waste is caused, and the flue gas treatment cost is increased.
Accordingly, the present inventors have developed a converter gas cleaning system that overcomes at least one of the above-mentioned technical drawbacks by years of experience and practice in the relevant industries.
Disclosure of utility model
The utility model aims to provide a converter flue gas purification system, which adopts a full-dry flue gas purification mode, has no condition that the subsequent pipe network and equipment are corroded after the flue gas and water are mixed, prolongs the service life of the equipment, and ensures the long-term and stable working state of the system.
The utility model further aims to provide a converter flue gas purification system which is used for multi-stage cooling, and water subjected to heat exchange with flue gas in a downstream cooling device can be returned to an upstream cooling device to exchange heat with flue gas with higher temperature, so that the cooling water can be used for multiple times, and the cost is saved.
The object of the utility model can be achieved by the following scheme:
The utility model provides a converter flue gas purification system, which comprises a cooling and impurity removing device, a dust remover and a second heat exchange and cooling device, wherein the cooling and impurity removing device comprises a fire catcher and a first heat exchange and cooling device, the fire catcher is at least provided with a first flue gas inlet and a first flue gas outlet, the first heat exchange and cooling device is at least provided with a second flue gas inlet, a second flue gas outlet and a water return port, and a first heat exchange pipe connected with the water return port is arranged in the first heat exchange and cooling device; the second heat exchange cooling device is provided with at least a third flue gas inlet, a third flue gas outlet and a water outlet, a second heat exchange pipe connected with the water outlet is arranged in the second heat exchange cooling device, and the water outlet is connected with the water return port of the first heat exchange cooling device through a water supply pipeline so as to convey water in the second heat exchange pipe after heat exchange with flue gas to the first heat exchange pipe;
The first flue gas inlet of the fire catcher is used for introducing flue gas generated by the converter, the first flue gas outlet of the fire catcher is connected with the second flue gas inlet of the first heat exchange cooling device, the second flue gas outlet of the first heat exchange cooling device is connected with the inlet of the dust remover, the outlet of the dust remover is connected with the third flue gas inlet of the second heat exchange cooling device, and the third flue gas outlet of the second heat exchange cooling device is respectively connected with the recovery device and the diffusing device in an on-off manner.
In a preferred embodiment of the utility model, the converter flue gas purification system further comprises a vaporization cooling pipeline and a fume collecting hood, wherein the first flue gas inlet of the fire catcher is connected with one end of the vaporization cooling pipeline, the other end of the vaporization cooling pipeline is connected with the fume collecting hood, and the fume trapped by the fume collecting hood is subjected to primary cooling through the vaporization cooling pipeline.
In a preferred embodiment of the present utility model, an expanded diameter portion is formed in the fire catcher between the first flue gas inlet and the first flue gas outlet, and the cross-sectional area of the expanded diameter portion is larger than the cross-sectional areas of the first flue gas inlet and the first flue gas outlet.
In a preferred embodiment of the utility model, the fire catcher is connected with the first heat exchange and cooling device through a receiving section.
In a preferred embodiment of the present utility model, the dust collector is a bag filter.
In a preferred embodiment of the present utility model, the inlet of the diffusing device or the pipeline connected with the inlet of the diffusing device is provided with a first on-off valve, and/or the inlet of the recovering device or the pipeline connected with the inlet of the recovering device is provided with a second on-off valve;
And a gas component detection device is arranged at the upstream of the diffusing device and the recycling device along the flow direction of the flue gas, and the gas component detection device is used for detecting the components of the flue gas so as to adjust the on-off state of the first on-off valve and/or the second on-off valve.
In a preferred embodiment of the present utility model, a fan is disposed between the third flue gas outlet of the second heat exchange and cooling device and the diffusing device and the recycling device.
In a preferred embodiment of the present utility model, a muffler is disposed at the air outlet of the fan or on a pipeline connected to the air outlet of the fan.
In a preferred embodiment of the present utility model, the diffusing device is a diffusing chimney.
In a preferred embodiment of the present utility model, the recovery device is a gas tank.
From the above, the converter flue gas purification system of the utility model has the characteristics and advantages that: the cooling and impurity removing device comprises a fire catcher and a first heat exchange and cooling device, a first heat exchange pipe connected with a water return port of the first heat exchange and cooling device is arranged in the first heat exchange and cooling device, a second heat exchange pipe connected with a water outlet of the second heat exchange and cooling device is arranged in the second heat exchange and cooling device, the water outlet of the second heat exchange and cooling device is connected with the water return port of the first heat exchange and cooling device through a water supply pipeline, cooling water in the second heat exchange pipe is conveyed into the first heat exchange pipe after exchanging heat with flue gas with lower temperature in the second heat exchange and cooling device, and the cooling water with increased temperature exchanges heat with high-temperature flue gas in the first heat exchange and cooling device; in the utility model, the fire catcher, the first heat exchange cooling device, the dust remover and the second heat exchange cooling device are sequentially connected, so that the flue gas purification mode is a full-dry flue gas purification mode, the condition that the subsequent pipe network and equipment are corroded after the flue gas and water are mixed is avoided, the service life of the equipment is prolonged, and the long-term and stable working state of the system is ensured.
Drawings
The following drawings are only for purposes of illustration and explanation of the present utility model and are not intended to limit the scope of the utility model. Wherein:
fig. 1: the structure diagram of the converter flue gas purifying system is shown in the specification.
Fig. 2: the utility model discloses a structural schematic diagram of a cooling and impurity removing device in a converter flue gas purifying system.
The reference numerals in the utility model are:
1. A cooling and impurity removing device; 101. A fire catcher;
1011. a first flue gas inlet; 102. A first heat exchange cooling device;
1021. a second flue gas outlet; 1022. A water return port;
1023. a steam outlet; 1024. A first heat exchange tube;
103. a receiving section; 2. A dust remover;
3. a second heat exchange cooling device; 301. A second heat exchange tube;
302. a water outlet; 4. A vaporization cooling line;
5. A fume collecting hood; 6. A blower;
7. a muffler; 8. A gas component detection device;
9. a first on-off valve; 10. A second on-off valve;
11. A diffusing device; 12. A recovery device;
13. A first flue gas line; 14. A water supply line;
15. a second flue gas line; 16. A converter.
Detailed Description
For a clearer understanding of technical features, objects, and effects of the present utility model, a specific embodiment of the present utility model will be described with reference to the accompanying drawings.
As shown in fig. 1 and 2, the utility model provides a converter flue gas purification system, which comprises a cooling and impurity removing device 1, a dust remover 2 and a second heat exchange and cooling device 3, wherein the cooling and impurity removing device 1 comprises a fire catcher 101 and a first heat exchange and cooling device 102, the fire catcher 101 is provided with at least a first flue gas inlet 1011 and a first flue gas outlet, the first heat exchange and cooling device 102 is provided with at least a second flue gas inlet, a second flue gas outlet 1021 and a water return port 1022, and a first heat exchange pipe 1024 connected with the water return port 1022 is arranged in the first heat exchange and cooling device 102; the second heat exchange cooling device 3 is provided with at least a third flue gas inlet, a third flue gas outlet and a water outlet 302, a second heat exchange tube 301 connected with the water outlet 302 is arranged in the second heat exchange cooling device 3, the water outlet 302 is connected with a water return port 1022 of the first heat exchange cooling device 102 through a water supply pipeline 14, so that water in the second heat exchange tube 301 after heat exchange with flue gas is conveyed to a first heat exchange tube 1024; the first flue gas inlet 1011 of the fire catcher 101 is used for introducing flue gas generated by the converter 16, the first flue gas outlet of the fire catcher 101 is connected with the second flue gas inlet of the first heat exchange cooling device 102, the second flue gas outlet 1021 of the first heat exchange cooling device 102 is connected with the inlet of the dust remover 2, the outlet of the dust remover 2 is connected with the third flue gas inlet of the second heat exchange cooling device 3 through the first flue gas pipeline 13, and the third flue gas outlet of the second heat exchange cooling device 3 is respectively connected with the recovery device 12 and the diffusing device 11 through the second flue gas pipeline 15.
In the utility model, the cooling and impurity removing device 1 comprises a fire catcher 101 and a first heat exchange and cooling device 102, a first heat exchange pipe 1024 connected with a water return port 1022 is arranged in the first heat exchange and cooling device 102, a second heat exchange pipe 301 connected with a water outlet 302 is arranged in a second heat exchange and cooling device 3, the water outlet 302 of the second heat exchange and cooling device 3 is connected with the water return port 1022 of the first heat exchange and cooling device 102 through a water supply pipeline 14, cooling water in the second heat exchange pipe 301 is conveyed into the first heat exchange pipe 1024 after exchanging heat with flue gas with lower temperature in the second heat exchange and cooling device 3, and the cooling water with increased temperature exchanges heat with high-temperature flue gas in the first heat exchange and cooling device 102, so that the multi-stage utilization of cooling water heat exchange is realized, and the resources and the cost are saved; in addition, the fire catcher 101, the first heat exchange cooling device 102, the dust remover 2 and the second heat exchange cooling device 3 are sequentially connected, the whole system adopts a full-dry flue gas purification mode, the condition that the flue gas and water are mixed and then corrode a subsequent pipe network and equipment is avoided, the service life of the equipment is prolonged, and the long-term and stable working state of the system is ensured.
In the present utility model, the fire catcher 101 is used to catch the fire in the flue gas and separate at least part of the first impurities in the flue gas; the first heat exchange and temperature reduction device 102 is used for recovering heat in the flue gas and separating at least part of first impurities in the flue gas. Wherein the first impurity may be, but is not limited to, large particle dust.
In the utility model, the temperature of the flue gas after passing through the first heat exchange and cooling device 102 can be reduced to 150-250 ℃; the temperature of the flue gas after passing through the second heat exchange and cooling device 3 can be reduced to be less than 70 ℃, so that the temperature of the flue gas is effectively reduced, and the requirement on the discharge temperature of the flue gas is met.
In an alternative implementation of the present utility model, as shown in fig. 1, the converter flue gas cleaning system further includes a vaporization cooling pipeline 4 and a fume collecting hood 5, wherein the first flue gas inlet 1011 of the fire catcher 101 is connected to one end of the vaporization cooling pipeline 4, the other end of the vaporization cooling pipeline 4 is connected to the fume collecting hood 5, and the fume trapped by the fume collecting hood 5 is primarily cooled by the vaporization cooling pipeline 4. The temperature of the flue gas after the primary cooling through the vaporization cooling pipeline 4 can reach 800 to 1000 ℃.
In an alternative implementation of the present utility model, as shown in fig. 1 and 2, the fire catcher 101 has a cylindrical chamber arranged vertically, the first flue gas inlet 1011 is located at the top of the fire catcher 101, and the first flue gas outlet is located at the bottom of the fire catcher 101, so that the flue gas passing through the fire catcher 101 flows from top to bottom; an expanded diameter portion is formed in the fire catcher 101 between the first flue gas inlet 1011 and the first flue gas outlet, and the cross-sectional area of the expanded diameter portion is larger than the cross-sectional areas of the first flue gas inlet 1011 and the first flue gas outlet. In the utility model, the fire catcher 101 adopts a large chamber structure, and utilizes the gravity sedimentation principle to collect fire (large particle dust with sparks) in the flue gas, which is an active explosion-proof measure, so that the possibility of burning and explosion of the flue gas in subsequent equipment can be effectively reduced, and the safety of the system is improved.
In an alternative implementation of the present utility model, as shown in fig. 1 and 2, the second flue gas inlet is located at the bottom of the first heat exchange and cooling device 102, and the second flue gas outlet 1021 is located at the top of the first heat exchange and cooling device 102, so that the flue gas passing through the first heat exchange and cooling device 102 flows from bottom to top. The first heat exchange and cooling device 102 adopts a large channel structure, so that dust and ash can be prevented from adhering to the inner wall of the first heat exchange and cooling device 102. An ash bucket can be arranged at the bottom of the first heat exchange and cooling device 102, and part of dust and ash settled in the first heat exchange and cooling device 102 can be collected and discharged through the ash bucket, so that the load of the dust remover 2 is reduced.
The first heat exchange and cooling device 102 can adopt, but is not limited to, a medium-low temperature waste heat recovery boiler, the medium-low temperature waste heat recovery boiler replaces an evaporative cooler, heat in the flue gas is recovered, the flue gas can be cooled from 800-1000 ℃ to 200 ℃, and the steam recovery amount is increased by 40%.
Further, as shown in fig. 1 and fig. 2, a receiving section 103 is disposed below the fire catcher 101 and the first heat exchanging and cooling device 102, two ends of the receiving section 103 are respectively connected with a first flue gas outlet of the fire catcher 101 and a second flue gas inlet of the first heat exchanging and cooling device 102, and settled dust in flue gas can be accumulated in the receiving section 103 for cleaning.
Further, as shown in fig. 2, the first heat exchange cooling device 102 further has a steam outlet 1023 communicating with the interior thereof, for outputting steam generated by heat exchange.
Further, the second heat exchange cooling device 3 is an indirect heat exchange type flue gas cooler. The indirect flue gas cooler is adopted to replace a gas cooler for directly spraying water for cooling, so that the service life of a flue gas pipe network is prolonged, the operation and maintenance cost is reduced, the risk of flue gas leakage can be reduced, and the heat of flue gas from 150 ℃ to 70 ℃ is recovered; in addition, the second heat exchange tube 301 is a closed system, and the cooling water does not contain sludge, so that the cooling water can be recycled, and the water consumption is saved.
Further, the dust collector 2 may be, but not limited to, a bag filter, and other dry dust collecting devices may be used.
In an alternative implementation of the present utility model, as shown in fig. 1, the inlet of the diffusing device 11 or a pipeline connected with the inlet of the diffusing device 11 (i.e. the second flue gas pipeline 15) is provided with a first on-off valve 9, and the inlet of the recovering device 12 or a pipeline connected with the inlet of the recovering device 12 (i.e. the second flue gas pipeline 15) is provided with a second on-off valve 10; and a gas component detection device 8 is arranged at the upstream of the diffusing device 11 and the recycling device 12 along the flow direction of the flue gas, and the gas component detection device 8 is used for detecting the components of the flue gas so as to adjust the on-off state of the first on-off valve 9 and/or the second on-off valve 10 and recycle or discharge the flue gas according to the detection result. The gas component detecting device 8 may be, but not limited to, a gas analyzer, so as to detect gas components (such as carbon monoxide and oxygen content) contained in the flue gas.
Further, as shown in fig. 1, a fan 6 is disposed between the third flue gas outlet of the second heat exchange cooling device 3 and the diffusing device 11 and the recovering device 12 (on the second flue gas pipeline 15), and the second heat exchange cooling device 3 is disposed upstream of the fan 6, so that the load of the fan 6 is further reduced. Wherein the fan 6 may be, but is not limited to, a centrifugal fan or an axial fan.
Further, as shown in fig. 1, a muffler 7 is disposed at an air outlet of the fan 6 or on a pipeline connected to the air outlet of the fan 6 to reduce working noise.
In the present utility model, the diffusing means 11 may be, but is not limited to, a diffusing chimney, and the recovering means 12 may be, but is not limited to, a gas tank.
The working process of the utility model is as follows:
The high-temperature flue gas generated in the converter steelmaking process is firstly captured by a fume collecting hood 5 and then passes through a vaporization cooling pipeline 4, the flue gas is subjected to primary cooling treatment while the heat of the flue gas is recovered, and the outlet temperature of the vaporization cooling pipeline 4 is about 800-1000 ℃; the flue gas cooled by the vaporization cooling pipeline 4 enters the fire catcher 101, a part of coarse particle dust is separated from the flue gas while the fire is caught, the flue gas coming out of the fire catcher 101 enters the first heat exchange cooling device 102, the flue gas is cooled to 200 ℃ from 800-1000 ℃ after passing through the first heat exchange cooling device 102, generated steam is discharged, and a part of coarse particle dust is caught by the first heat exchange cooling device 102. The cooled and coarsely dedusted flue gas enters a deduster 2 for fine dedusting, dust and ash in the flue gas can be filtered by adopting a filter bag of an antistatic filter material in the deduster 2, and a second heat exchange cooling device 3 is arranged at the downstream of the deduster 2, so that the temperature of the clean flue gas entering the deduster can be reduced to below 70 ℃; the low-temperature flue gas after fine dust removal is conveyed to a switching station through a fan 6, so that the rapid switching of gas diffusion or recovery is realized. The gas component detection device 8 is arranged in front of the switching station, and the content of carbon monoxide and oxygen in the flue gas can be detected according to the gas component detection device 8, so that the first on-off valve 9 and the second on-off valve 10 are controlled, and when the content of carbon monoxide and oxygen in the flue gas reaches the recovery condition, the qualified flue gas can be sent into the recovery device 12 for recovery; unqualified gas or smoke which cannot be recovered due to other reasons enters a diffusing device 11 for diffusing.
The converter flue gas purification system has the characteristics and advantages that:
1. In the converter flue gas purification system, the fire catcher 101 is matched with the first heat exchange and cooling device 102, so that the purposes of flue gas cooling, coarse dust removal and fire separation are achieved, the risks of bag burning and explosion of the dust catcher 2 are greatly reduced, and better safety is achieved.
2. In the converter flue gas purification system, the second heat exchange cooling device 3 is adopted to replace a gas cooler for directly spraying water for cooling, so that the service life of a gas pipe network is prolonged, and the operation and maintenance cost is reduced; moreover, a gas drainer is not required to be arranged, so that the risk of smoke leakage is reduced; the recovered flue gas can be cooled from 150 ℃ to 70 ℃, and the cooling water adopting a closed system does not contain sludge, so that the water consumption is saved.
3. In the converter flue gas purification system, the second heat exchange cooling device 3 for cooling the flue gas is moved forward to the upstream of the fan 6, so that the loads of the fan 6 and rear facilities are further reduced.
4. In the converter flue gas purification system, water subjected to heat exchange in the second heat exchange tube 301 in the second heat exchange and cooling device 3 is conveyed into the first heat exchange tube 1024 in the first heat exchange and cooling device 102 and used as water supply in the first heat exchange tube 1024 for carrying out heat exchange and recovery on heat of flue gas in the first heat exchange and cooling device 102 so as to realize backwater utilization of cooling water and reduce water consumption.
The foregoing is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model. Any equivalent changes and modifications can be made by those skilled in the art without departing from the spirit and principles of this utility model, and are intended to be within the scope of this utility model.
Claims (10)
1. The converter flue gas purification system is characterized by comprising a cooling and impurity removing device, a dust remover and a second heat exchange and cooling device, wherein the cooling and impurity removing device comprises a fire catcher and a first heat exchange and cooling device, the fire catcher is at least provided with a first flue gas inlet and a first flue gas outlet, the first heat exchange and cooling device is at least provided with a second flue gas inlet, a second flue gas outlet and a water return port, and a first heat exchange pipe connected with the water return port is arranged in the first heat exchange and cooling device; the second heat exchange cooling device is provided with at least a third flue gas inlet, a third flue gas outlet and a water outlet, a second heat exchange pipe connected with the water outlet is arranged in the second heat exchange cooling device, and the water outlet is connected with the water return port of the first heat exchange cooling device through a water supply pipeline so as to convey water in the second heat exchange pipe after heat exchange with flue gas to the first heat exchange pipe;
The first flue gas inlet of the fire catcher is used for introducing flue gas generated by the converter, the first flue gas outlet of the fire catcher is connected with the second flue gas inlet of the first heat exchange cooling device, the second flue gas outlet of the first heat exchange cooling device is connected with the inlet of the dust remover, the outlet of the dust remover is connected with the third flue gas inlet of the second heat exchange cooling device, and the third flue gas outlet of the second heat exchange cooling device is respectively connected with the recovery device and the diffusing device in an on-off manner.
2. The converter fume purification system of claim 1, further comprising a evaporative cooling conduit and a fume collection hood, wherein said first fume inlet of said fire trap is connected to one end of said evaporative cooling conduit, and wherein the other end of said evaporative cooling conduit is connected to said fume collection hood, and wherein the fume trapped by said fume collection hood is initially cooled by said evaporative cooling conduit.
3. The converter fume cleaning system of claim 1, wherein an expanded diameter portion is formed within said fire catcher and between said first fume inlet and said first fume outlet, said expanded diameter portion having a cross-sectional area greater than the cross-sectional areas of said first fume inlet and said first fume outlet.
4. A converter flue gas cleaning system according to claim 3, wherein said fire catcher is connected to said first heat exchanging and cooling device by a receiving section.
5. The converter fume cleaning system of claim 1, wherein said dust collector is a bag collector.
6. The converter fume cleaning system according to claim 1, wherein the inlet of the diffusing device or a pipeline connected with the inlet of the diffusing device is provided with a first on-off valve, and/or the inlet of the recovering device or a pipeline connected with the inlet of the recovering device is provided with a second on-off valve;
And a gas component detection device is arranged at the upstream of the diffusing device and the recycling device along the flow direction of the flue gas, and the gas component detection device is used for detecting the components of the flue gas so as to adjust the on-off state of the first on-off valve and/or the second on-off valve.
7. The converter fume cleaning system according to claim 1, wherein a fan is disposed between said third fume outlet of said second heat exchange and cooling device and said diffusing device and said recycling device.
8. The converter fume cleaning system according to claim 7, wherein a muffler is provided at an air outlet of the blower or on a pipe connected to the air outlet of the blower.
9. The converter fume cleaning system according to claim 1, wherein said diffusing means is a diffusing stack.
10. The converter fume cleaning system according to claim 1, wherein said recovery device is a gas tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323121940.XU CN221217829U (en) | 2023-11-20 | 2023-11-20 | Converter flue gas purifying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323121940.XU CN221217829U (en) | 2023-11-20 | 2023-11-20 | Converter flue gas purifying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221217829U true CN221217829U (en) | 2024-06-25 |
Family
ID=91578725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323121940.XU Active CN221217829U (en) | 2023-11-20 | 2023-11-20 | Converter flue gas purifying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221217829U (en) |
-
2023
- 2023-11-20 CN CN202323121940.XU patent/CN221217829U/en active Active
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