CN212417448U - White-removing, dust-removing and demisting system for steam-exhausted smoke of water-spraying cooling chamber in metallurgical production line - Google Patents
White-removing, dust-removing and demisting system for steam-exhausted smoke of water-spraying cooling chamber in metallurgical production line Download PDFInfo
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- CN212417448U CN212417448U CN202021903617.1U CN202021903617U CN212417448U CN 212417448 U CN212417448 U CN 212417448U CN 202021903617 U CN202021903617 U CN 202021903617U CN 212417448 U CN212417448 U CN 212417448U
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 35
- 238000001816 cooling Methods 0.000 title claims abstract description 31
- 239000000779 smoke Substances 0.000 title claims abstract description 8
- 238000005507 spraying Methods 0.000 title claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 71
- 230000005494 condensation Effects 0.000 claims abstract description 43
- 238000009833 condensation Methods 0.000 claims abstract description 43
- 238000010438 heat treatment Methods 0.000 claims abstract description 35
- 239000007921 spray Substances 0.000 claims abstract description 29
- 238000001704 evaporation Methods 0.000 claims abstract description 26
- 230000008020 evaporation Effects 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 239000000428 dust Substances 0.000 claims abstract description 17
- 239000007789 gas Substances 0.000 claims description 22
- 239000000498 cooling water Substances 0.000 claims description 16
- 239000003595 mist Substances 0.000 claims description 16
- 230000010148 water-pollination Effects 0.000 claims description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 7
- 239000003546 flue gas Substances 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 210000000697 sensory organ Anatomy 0.000 abstract description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 6
- 229910001208 Crucible steel Inorganic materials 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000000571 coke Substances 0.000 description 2
- 238000004939 coking Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model discloses a white dust removal defogging system that takes off of smoke gas is evaporated in water spray cooling room among the metallurgical production line. The system comprises a main air duct evaporation exhaust condensing system and an evaporation exhaust heating system; the main air duct evaporation and exhaust condensation system is characterized in that a water spray cooling chamber (1), an evaporation and exhaust fan (2), a water medium heat exchanger (4), an evaporation and exhaust distribution and liquid collection device (6) and a condensation demister (7) are sequentially arranged on a main air duct (3); the steam exhaust heating system comprises a wind collecting cover (14), a filter (13), a wild air valve (12), a heating fan (11), a heating air duct (10) and an air-air heat exchanger (9); the air collecting cover (14) is connected with the air-air heat exchanger (9) through a heating air duct (10); the wild air valve (12) is arranged at the front end of the filter (13), one end of the heating fan (11) is connected with the air collecting cover (14), and the other end of the heating fan passes through the air-air heat exchanger (9) and then is connected with the outdoor atmosphere or the rear end of the production line. The utility model discloses an aspect has eliminated the outside sense organ to "white plume", has also eliminated the hidden danger to external environmental pollution on the one hand.
Description
Technical Field
The utility model belongs to the technical field of metallurgical industry dust removal defogging, concretely relates to water spray cooling room evaporates white dust removal defogging system that takes off of exhaust gas among cast steel, the cast iron production line, also is applicable to other trades that adopt similar water spray cooling technique and need contain the white dust removal processing of taking off of steam flue gas to outer arranging in coking industry coke water spray cooling, the steel industry steel slag water spray cooling etc..
Background
At present, the water vapor-containing smoke generated by a water spray cooling chamber on a cast steel and cast iron production line is not treated generally and is directly discharged to the roof through an air duct.
On one hand, the discharge mode forms white smoke plume on the roof, which influences the vision; on the one hand, in the water spray cooling process, some dust is generated and is taken away by water vapor to the roof to be discharged, so that the risk of environmental pollution possibly exists.
Disclosure of Invention
The utility model provides a to the not enough of prior art existence a white dust removal defogging system that takes off of water spray cooling room steam exhaust gas among the metallurgical production line.
The technical solution of the utility model is that: a de-whitening, dedusting and demisting system for steam exhaust gas of a water spray cooling chamber in a metallurgical production line comprises a main air duct steam exhaust condensing system and a steam exhaust heating system; the main air duct evaporation and exhaust condensation system is characterized in that a water spray cooling chamber, an evaporation and exhaust fan, a water medium heat exchanger, an evaporation and exhaust distribution and liquid collection device and a condensation demister are sequentially arranged on a main air duct; the steam exhaust heating system comprises a wind collecting cover, a filter, a wild wind valve, a heating fan, a heating air duct and a gas-gas heat exchanger; the air collecting cover is arranged above the front end of the metallurgical production line and is used for introducing hot air above the production line and is connected with the air-air heat exchanger through a heating air duct; the wild air valve is arranged at the front end of the filter, one end of the heating fan is connected with the air collecting cover, and the other end of the heating fan is connected with outdoor atmosphere or the rear end of the production line after passing through the air-air heat exchanger.
According to the embodiment of the utility model, the hydrophily heat exchanger, the condensation defroster are matched with a circulating cooling water system, a unified part of the circulating cooling water system overhauls and washes the condensation defroster, and a part of the circulating cooling water system respectively enters the hydrophily heat exchanger and the condensation defroster and returns to the circulating cooling water system in the factory after exchanging heat with the steam and exhaust air in the main air duct; regulating valves and flow meters are arranged on the circulating cooling water pipelines of the hydrophily heat exchanger and the condensation demister; the regulating valve can adopt electric and pneumatic, and the flowmeter can adopt other forms such as a rotor flowmeter, an electromagnetic flowmeter and the like.
According to the embodiment of the utility model, the hydrophily heat exchanger is arranged in the main air duct in front of the condensation demister, and the condensation demister is arranged in the main air duct in front of the gas-gas heat exchanger; the bottom of the hydrophily heat exchanger is provided with a water collecting hopper, and collected water is discharged into a trench through a valve; the flue gas distribution and liquid collection device collects water condensed by the upper condensation demister and discharges the water into a trench through a pipeline.
According to an embodiment of the invention, the heating fan is a centrifugal, axial flow; the gas-gas heat exchanger is a rotary type, tubular type or plate frame type; the wind collecting cover is fixed, movable up and down and horizontally movable; the wild wind valve is in the form of a butterfly valve, a gate valve and a baffle door, and the filter is in the form of a metal wire mesh type.
According to the embodiment of the utility model, the hydrophily heat exchanger is board-like or tubular, and the tubular adopts spiral fin formula, rib formula, diaphragm type.
According to the embodiment of the utility model, the condensation demister adopts flat plates and ridge type, demister sheets adopt corrugated hollow structures, water collecting main pipes are arranged at two ends of unit demister modules, and the water collecting main pipes of each unit module are connected with an external circulating cold water pipeline; the demister blades are made of metal (including alloy and stainless steel) and high-strength non-metal materials.
According to the embodiment of the utility model, the steam-exhaust air distribution and liquid collection device is provided with a layer of tower plate, a plurality of exhaust holes are uniformly arranged on the tower plate, 1-2 liquid discharge pipes are arranged on the periphery of the tower plate, and the exhaust holes are in a float valve type or a bubble cap type; the liquid discharge pipe is welded on the tower plate, and liquid condensed by the upper condensation demister or water used for washing the demister can be discharged to an external trench through the liquid discharge pipe and enters a water treatment system in a plant for additional treatment.
The main air duct evaporation and exhaust condensing system is characterized in that water vapor generated by water spray in a water spray cooling chamber is boosted through an evaporation and exhaust fan, then is primarily cooled through a heat exchanger of a water medium, the cooled evaporation and exhaust air further passes through subsequent evaporation and exhaust air distribution and liquid collection devices, a flow field is uniformly distributed and then enters a subsequent condensation demister, the condensation demister reduces the temperature of the evaporation and exhaust air and simultaneously removes fog droplet particles in the evaporation and exhaust air, the collected fog droplet particles form liquid and then are collected through the distribution and liquid collection devices, and the liquid is discharged into a trench.
The evaporated exhaust air is condensed by the condensation demister, enters a subsequent evaporated exhaust air heating system, is heated to a certain temperature by the air-air heat exchanger, and is discharged through a workshop roof chimney.
The hot air above the production line is collected through the air collecting cover, filtered through the filter, boosted through the heating fan, enters the air-passing heat exchanger and the main air duct to be evaporated, exhausted, heat exchanged and cooled, and then is sent to the rear end of the production line or exhausted into the atmosphere.
The utility model discloses at first carry out condensation treatment to the produced moisture vapour flue gas of water spray cooling room, reduce moisture content wherein, utilize the condensation defroster to this condensation flue gas defogging dust removal processing, then the natural high temperature hot-air of the original steelmaking of make full use of, ironmaking production line top heaies up to the flue gas after the condensation to reach and take off white processing.
The utility model discloses evaporating that contains a large amount of steam and airing exhaust and carry out condensation, defogging, dust removal processing back, the waste heat of recycling production line top hot-air is aired exhaust and is heaied up to evaporating after the condensation defogging removes dust, reaches and eliminates "white plume", dust removal, defogging purpose, eliminates pollution and the sense organ to the environment, has reached energy saving and consumption reduction's purpose simultaneously again.
Compared with the prior art, the utility model has the beneficial technical effects that.
(1) At present, the treatment of the steam exhaust gas of a water spray cooling chamber in a cast steel and cast iron production line is not formally developed, and because impurities in water are discharged along with water vapor in the process of water spray cooling of the cast steel and cast iron production line, harmful components on the surfaces of the cast steel and the cast iron which pollute the environment are discharged to the external environment by a fan after the water vapor evaporates, the invention provides a treatment system which eliminates the external sense of 'white smoke plume' on the one hand and eliminates the hidden trouble of pollution to the external environment on the other hand.
(2) The utility model discloses make full use of the waste heat of the hot-air of production line top, reduced the energy consumption.
(3) The utility model discloses simple process, power equipment is few, and the structure is easy to be makeed, has reduced the equipment maintenance expense, has reduced the energy consumption.
Drawings
FIG. 1 is a diagram of a system for removing white, dust and mist of steam-exhaust gas in a water-spraying temperature-reducing chamber in a metallurgical production line.
Fig. 2 is a structural view of an evaporation exhaust air distribution and liquid collection device.
In the figure, 1-a water spray cooling chamber, 2-an evaporation exhaust fan, 3-a main air duct, 4-a water medium heat exchanger, 5-a valve, 6-an evaporation exhaust air distribution and liquid collection device, 7-a condensation demister, 8-a circulating cooling water system, 801/803-a regulating valve, 802/804-a flowmeter, 9-an air-gas heat exchanger, 10-a heating air duct, 11-a heating fan, 12-a wild air valve, 13-a filter and 14-a fan cover; 601-exhaust hole, 602-tower plate, 603-liquid discharge pipe.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
A de-whitening, dedusting and demisting system for steam exhaust gas of a water spray cooling chamber in a metallurgical production line comprises a main air duct steam exhaust condensing system and a steam exhaust heating system; the main air duct evaporation and exhaust condensation system is characterized in that a water spray cooling chamber 1, an evaporation and exhaust fan 2, a water medium heat exchanger 4, an evaporation and exhaust distribution and liquid collection device 6 and a condensation demister 7 are sequentially arranged on a main air duct 3; the steam exhaust heating system comprises a wind collecting cover 14, a filter 13, a wild air valve 12, a heating fan 11, a heating air duct 10 and an air-air heat exchanger 9; the air collecting cover 14 is arranged above the front end of the metallurgical production line, the air collecting cover 14 is used for introducing hot air above the production line, and the air collecting cover 14 is connected with the air-air heat exchanger 9 through a heating air duct 10; the wild air valve 12 is arranged at the front end of the filter 13, one end of the heating fan 11 is connected with the air collecting cover 14, and the other end of the heating fan is connected with the outdoor atmosphere or the rear end of the production line after passing through the air-air heat exchanger 9.
The metallurgical production line comprises a cast steel and cast iron production line, and is also suitable for coke water spray cooling in the coking industry, steel slag water spray cooling in the steel industry and other industries which adopt similar water spray cooling technology and need whitening and dedusting treatment on discharged steam-containing smoke.
The water medium heat exchanger 4 and the condensation demister 7 are matched with a circulating cooling water system, a unified part of the circulating cooling water system overhauls and washes the condensation demister 7, and a part of the circulating cooling water system respectively enters the water medium heat exchanger 4 and the condensation demister 7 and returns to the in-plant circulating cooling water system after exchanging heat with the steam exhaust air in the main air duct 3; the circulating cooling water pipes of the water medium heat exchanger 4 and the condensation demister 7 are provided with regulating valves 801 and 803 and flow meters 802 and 804.
The hydrophily heat exchanger 4 is arranged in the main air duct 3 in front of the condensation demister 7, and the condensation demister 7 is arranged in the main air duct 3 in front of the gas-gas heat exchanger 9; the bottom of the hydrophily heat exchanger 4 is provided with a water collecting hopper, and collected water is discharged into a trench through a valve 5; the flue gas distribution and liquid collection device 6 collects water condensed by the upper condensation demister 7 and discharges the water into a trench through a pipeline.
The heating fan 11 is a centrifugal type or an axial type; the gas-gas heat exchanger 9 is a rotary type, a tubular type or a plate frame type; the wind collecting cover 14 is fixed, vertically movable and horizontally movable; the wild valve 12 is in the form of a butterfly valve, a gate valve or a flapper door, and the filter 13 is of a wire mesh type.
The hydrophily heat exchanger 4 is a plate type or a tube type, and the tube type adopts a spiral fin type, a rib type and a film type.
The condensation demister 7 is flat plate type and ridge type, the demister pieces are of corrugated hollow structures, water collecting main pipes are arranged at two ends of unit demister modules, and the water collecting main pipes of the unit modules are connected into an external circulating cold water pipeline.
The evaporation and exhaust air distribution and liquid collection device 6 is provided with a layer of tower plate 602, a plurality of exhaust holes 601 are uniformly arranged on the tower plate, 1-2 liquid discharge pipes 603 are arranged on the periphery of the tower plate, and the exhaust holes 601 are in a float valve type or a bubble cap type; the drain 603 is welded to the tray 602.
The above detailed description of the embodiments with reference to the drawings is only a preferred embodiment of the present invention, however, the present invention is not limited to the details of the above embodiments, and any modifications and substitutions may be made within the spirit and principle of the present invention; are all in the protection scope of the utility model.
Claims (7)
1. A de-whitening, dedusting and demisting system for steam exhaust gas of a water spray cooling chamber in a metallurgical production line is characterized by comprising a main air duct steam exhaust condensing system and a steam exhaust heating system; the main air duct evaporation and exhaust condensation system is characterized in that a water spray cooling chamber (1), an evaporation and exhaust fan (2), a water medium heat exchanger (4), an evaporation and exhaust distribution and liquid collection device (6) and a condensation demister (7) are sequentially arranged on a main air duct (3); the steam exhaust heating system comprises a wind collecting cover (14), a filter (13), a wild air valve (12), a heating fan (11), a heating air duct (10) and an air-air heat exchanger (9); the air collecting cover (14) is arranged above the front end of the metallurgical production line, the air collecting cover (14) is used for introducing hot air above the production line, and the air collecting cover (14) is connected with the air-air heat exchanger (9) through a heating air duct (10); the wild air valve (12) is arranged at the front end of the filter (13), one end of the heating fan (11) is connected with the air collecting cover (14), and the other end of the heating fan passes through the air-air heat exchanger (9) and then is connected with the outdoor atmosphere or the rear end of the production line.
2. The system for removing white dust and mist of steam exhaust gas of a water spray cooling chamber in a metallurgical production line according to claim 1, characterized in that the water-medium heat exchanger (4) and the condensation mist eliminator (7) are matched with a circulating cooling water system, a part of the circulating cooling water system overhauls and washes the condensation mist eliminator (7), and a part of the circulating cooling water system enters the water-medium heat exchanger (4) and the condensation mist eliminator (7) respectively, exchanges heat with the steam exhaust gas in the main air duct (3), and then returns to the circulating cooling water system in the plant; regulating valves (801, 803) and flow meters (802, 804) are arranged on circulating cooling water pipelines of the water medium heat exchanger (4) and the condensation demister (7).
3. The system for removing white, dust and mist of steam exhaust gas of a water spray cooling chamber in a metallurgical production line according to claim 1, characterized in that the water medium heat exchanger (4) is arranged in the main air duct (3) in front of the condensation mist eliminator (7), and the condensation mist eliminator (7) is arranged in the main air duct (3) in front of the gas-gas heat exchanger (9); a water collecting hopper is arranged at the bottom of the hydrophily heat exchanger (4), and collected water is discharged into a trench through a valve (5); the flue gas distribution and liquid collection device (6) collects water condensed by the upper condensation demister (7) and discharges the water into a trench through a pipeline.
4. The system for removing white, dust and mist of steam exhaust gas in a water spraying and cooling chamber in a metallurgical production line according to claim 1, characterized in that the heating fan (11) is a centrifugal type, axial flow type; the gas-gas heat exchanger (9) is a rotary type, a tubular type and a plate frame type; the wind collecting cover (14) is fixed, movable up and down and horizontally movable; the wild valve (12) is in the form of a butterfly valve, a gate valve and a baffle door, and the filter (13) is in the form of a metal wire mesh type.
5. The system for removing white, dust and mist of steam-exhausted smoke of a water spray cooling chamber in a metallurgical production line according to claim 1, wherein the water medium heat exchanger (4) is plate type or tube type, and the tube type adopts spiral fin type, rib type or film type.
6. The system for removing white, dust and mist of steam exhaust gas in a water spray cooling chamber in a metallurgical production line according to claim 1, characterized in that the condensation mist eliminator (7) adopts a flat plate type and a ridge type, the mist eliminator sheets adopt a corrugated hollow structure, the two ends of the unit mist eliminator modules are provided with water collecting main pipes, and the water collecting main pipes of the unit mist eliminator modules are connected into an external circulating cold water pipeline.
7. The system for removing white, dust and mist of the steam-exhaust gas of the water spray cooling room in the metallurgical production line according to claim 1, characterized in that the steam-exhaust gas distribution and liquid collection device (6) is provided with a layer of tower plate (602), a plurality of exhaust holes (601) are uniformly arranged on the tower plate, 1-2 liquid discharge pipes (603) are arranged on the periphery of the tower plate, and the exhaust holes (601) are in a float valve type or a bubble cap type; the drain pipe (603) is welded on the tower plate (602).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021903617.1U CN212417448U (en) | 2020-09-03 | 2020-09-03 | White-removing, dust-removing and demisting system for steam-exhausted smoke of water-spraying cooling chamber in metallurgical production line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021903617.1U CN212417448U (en) | 2020-09-03 | 2020-09-03 | White-removing, dust-removing and demisting system for steam-exhausted smoke of water-spraying cooling chamber in metallurgical production line |
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| Publication Number | Publication Date |
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| CN212417448U true CN212417448U (en) | 2021-01-29 |
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| CN202021903617.1U Active CN212417448U (en) | 2020-09-03 | 2020-09-03 | White-removing, dust-removing and demisting system for steam-exhausted smoke of water-spraying cooling chamber in metallurgical production line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111939716A (en) * | 2020-09-03 | 2020-11-17 | 中钢集团天澄环保科技股份有限公司 | White-removing, dust-removing and demisting system for steam-exhausted smoke of water-spraying cooling chamber in metallurgical production line |
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2020
- 2020-09-03 CN CN202021903617.1U patent/CN212417448U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111939716A (en) * | 2020-09-03 | 2020-11-17 | 中钢集团天澄环保科技股份有限公司 | White-removing, dust-removing and demisting system for steam-exhausted smoke of water-spraying cooling chamber in metallurgical production line |
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