CN107034335A - A kind of process system and method to ultra-clean dedusting of flue gas of converter - Google Patents
A kind of process system and method to ultra-clean dedusting of flue gas of converter Download PDFInfo
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- CN107034335A CN107034335A CN201710351647.2A CN201710351647A CN107034335A CN 107034335 A CN107034335 A CN 107034335A CN 201710351647 A CN201710351647 A CN 201710351647A CN 107034335 A CN107034335 A CN 107034335A
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- flue gas
- cooling tower
- electrostatic precipitator
- dedusting
- gas
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 95
- 239000003546 flue gas Substances 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000001816 cooling Methods 0.000 claims abstract description 82
- 239000012717 electrostatic precipitator Substances 0.000 claims abstract description 39
- 239000000428 dust Substances 0.000 claims abstract description 28
- 239000007789 gas Substances 0.000 claims description 44
- 239000003818 cinder Substances 0.000 claims description 30
- 239000003245 coal Substances 0.000 claims description 20
- 230000005684 electric field Effects 0.000 claims description 18
- 210000001015 abdomen Anatomy 0.000 claims description 17
- 238000005406 washing Methods 0.000 claims description 14
- 238000004880 explosion Methods 0.000 claims description 13
- 238000013022 venting Methods 0.000 claims description 13
- 230000018044 dehydration Effects 0.000 claims description 11
- 238000006297 dehydration reaction Methods 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 11
- 238000002309 gasification Methods 0.000 claims description 10
- 239000000571 coke Substances 0.000 claims description 9
- 239000003034 coal gas Substances 0.000 claims description 7
- 238000001704 evaporation Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000008020 evaporation Effects 0.000 claims description 5
- 238000009628 steelmaking Methods 0.000 claims description 5
- 235000019504 cigarettes Nutrition 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 230000000740 bleeding effect Effects 0.000 claims description 2
- 230000026676 system process Effects 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 240000005561 Musa balbisiana Species 0.000 description 1
- 235000018290 Musa x paradisiaca Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002304 perfume Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 235000013599 spices Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/38—Removal of waste gases or dust
- C21C5/40—Offtakes or separating apparatus for converter waste gases or dust
Abstract
The present invention relates to a kind of process system and method to ultra-clean dedusting of flue gas of converter, the process system is diffused or storage system including devaporizer (2), the first pipe-line system, electrostatic precipitator (4), second pipe system, wash cooling tower (9), switching station (11) and flue gas；Devaporizer (2) connects electrostatic precipitator (4) by the first pipe-line system, electrostatic precipitator (4) connects wash cooling tower (9) by second pipe system, wash cooling tower (9) connects switching station (11) by second pipe system, and switching station (11) connection flue gas is diffused or storage system.The process system is compared with conventional LT dry method system process, and flue gas of converter diffuses dust concentration≤10mg/Nm3, disclosure satisfy that the requirement of ultra-clean discharge.
Description
Technical field
The present invention is a kind of process system and method to ultra-clean dedusting of flue gas of converter, and flue gas of converter diffuses powder
Dust concentration≤10mg/Nm3。
Background technology
Converter is during oxygen decarburization, and carbon and oxygen reaction can produce carbon monoxide content very high furnace gas, utilize heat
It is worth very high flue gas, it is necessary to it is cooled down and purified treatment.Once dust collection of converter system is that converter gas is cooled down
And purified treatment, and it is main purpose technical process to reclaim the high heat value gas containing carbon monoxide for using future.
Current China once dust collection of converter uses OG wet methods, LT dry method, semidry method tower and Venturi system.With OG wet methods, semidry method
Tower text technique is compared, and the major advantage of LT dry method is：Dust separation efficiency high, directly can be dropped dust concentration by electric cleaner
To 20mg/Nm3Below；The system all uses dry process, in the absence of secondary pollution and sewage disposal；Small, coal is damaged in system resistance
Gas calorific value is high, and reclaiming dust can directly utilize, and save the energy.LT dry dedusting technologies have been identified as development side from now on
To being used by large-scale promotion in China.
Conventional LT dry method system process is as follows：
Conventional LT dry method system gas cooler is placed on after switching station, and simply coal gas is entered before gas chamber is entered
Row washing cooling, does not carry out washing cooling to the flue gas for entering diffusing chimney.The exhaust gas dust of air is discharged into diffusing chimney
Concentration≤20mg/Nm3, into exhaust gas dust concentration≤10mg/Nm of gas chamber3.The electrostatic precipitator of conventional LT dry method system
Four electric fields of high voltage power supply all use single phase poaer supply, or using three phase mains, its excess-three electric field uses single-phase electricity to the first electric field
Source.The raising required with Environmental Protection in China, fume emission dust concentration≤10mg/Nm of some importance regional requirements converter3,
Conventional LT dry method system is difficult to the requirement for meeting ultra-clean discharge.
The content of the invention
It is an object of the invention to provide a kind of process system to ultra-clean dedusting of flue gas of converter, this new technology with often
Rule LT dry method system process is compared, and flue gas of converter diffuses dust concentration≤10mg/Nm3。
A kind of process system to ultra-clean dedusting of flue gas of converter, the process system includes devaporizer, first
Pipe-line system, electrostatic precipitator, second pipe system, wash cooling tower, switching station and flue gas are diffused or storage system；Evaporation is cold
But device connects electrostatic precipitator by the first pipe-line system, and electrostatic precipitator connects wash cooling tower by second pipe system,
Wash cooling tower connects switching station by second pipe system, and switching station connection flue gas is diffused or storage system.
Wherein, devaporizer top is provided with double-flow spray gun.
Wherein, the first pipe-line system is raw coke oven gas pipeline, and it is defeated that the bottom of devaporizer is provided with banana-bends belly chain type
Grey machine, banana-bends belly chain type cinder conveyer connection cinder storehouse.
Wherein, electrostatic precipitator is preferably cylindrical shape dry electrostatic cleaner, and its top is provided with high voltage power supply, is preferably
Four electric fields, four electric fields use three-phase high-voltage power supply.
Wherein, the bottom of electrostatic precipitator is provided with fine ash ash-transmission system, fine ash ash-transmission system connection fine ash storehouse.
Wherein, second pipe system is clean coal feed channel, clean coal feed channel connection of axial flow fan first, axial flow blower connection
Muffler, connects wash cooling tower by muffler afterwards.
Wherein, wash cooling top of tower cone section sets self-replaced type explosion venting valve.
Wherein, second pipe system is clean coal feed channel, and wash cooling tower connects switching station, flue gas by clean coal feed channel
Diffuse or storage system is diffusing chimney or gas chamber, washed by wash cooling tower, the flue gas of cooling is switched to by switching station
Diffusing chimney is diffused or gas chamber storage.
Wherein, diffusing chimney bottom, which is provided with to set at the top of dehydration device, diffusing chimney, diffuses igniter.
The invention further relates to a kind of process to ultra-clean dedusting of flue gas of converter, it comprises the following steps：
(1) high-temperature flue gas produced in convertor steelmaking process first passes around gasification cooling flue, while heat energy is reclaimed
Flue gas is cooled for the first time；
(2) flue gas cooled by gasification cooling flue carries out the reducing temperature twice of flue gas by devaporizer, evaporates cold
But the double-flow spray gun that device top is set, sprays water to flue gas, and devaporizer carries out rough dedusting to flue gas and quenched；
(3) cool down by devaporizer, rough dedusting, it is quenched after flue gas enter electrostatic precipitator, preferably cylindrical shape
Dry electrostatic cleaner, carries out refined dedusting, and preferably electric cleaner has four electric fields, and four electric fields are preferably all high using three-phase
Voltage source, it is preferable that electrostatic precipitator exiting flue gas dust concentration≤20mg/Nm3；
(4) flue gas after electrostatic precipitator (4) refined dedusting is washed by wash cooling tower, cooled, it is preferable that washed
Cooling tower is washed provided with self-replaced type explosion venting valve；
(5) flue gas by wash cooling tower washing, cooling switches to diffusing chimney by switching station and diffused or gas chamber storage
Deposit, dehydration device is provided with diffusing chimney bottom, dewater treatment is carried out to flue gas before diffusing, remove dust-laden drop, enter one
Walk to set at the top of purifying smoke, diffusing chimney and diffuse igniter, diffuse the exhaust gas dust concentration after ignition device is diffused
≤10mg/Nm3。
Wherein, devaporizer connects electrostatic precipitator by raw coke oven gas pipeline, and the bottom of devaporizer is provided with perfume (or spice)
The curved belly chain type cinder conveyer of any of several broadleaf plants, banana-bends belly chain type cinder conveyer connection cinder storehouse, the cinder collected by devaporizer leads to
Cross banana-bends belly chain type cinder conveyer and be transported to cinder storehouse.It is preferred that, the bottom of electrostatic precipitator is provided with fine ash ash-transmission system, carefully
Grey ash-transmission system connection fine ash storehouse, the fine ash collected by electrostatic precipitator is transported to fine ash storehouse by fine ash ash-transmission system.
Wherein, electrostatic precipitator connects wash cooling tower, clean coal feed channel connecting shaft stream wind first by clean coal feed channel
Machine, axial flow blower joint noise reduction device connects wash cooling tower by muffler afterwards.
The present invention relates to a kind of process system to ultra-clean dedusting of flue gas of converter, process system includes evaporation and cooled down
Device, double-flow spray gun, raw coke oven gas pipeline, banana-bends belly chain type cinder conveyer, cinder storehouse, cylindrical shape dry electrostatic cleaner, electricity are removed
Dirt device three-phase high-voltage power supply, fine ash ash-transmission system, fine ash storehouse, clean coal feed channel, axial flow blower, muffler, wash cooling tower, wash
Wash cooling tower explosion venting valve, switching station, dehydration device, diffusing chimney, diffuse igniter.The high temperature produced in convertor steelmaking process
Flue gas first passes around gasification cooling flue, and flue gas is cooled for the first time while heat energy is reclaimed.By gasification cooling flue
The flue gas of cooling carries out the reducing temperature twice of flue gas by devaporizer, while carrying out rough dedusting to flue gas and quenched.Cool down, slightly
Dedusting, it is quenched after flue gas by raw coke oven gas pipeline enter cylindrical shape dry electrostatic cleaner carry out refined dedusting, electric cleaner four
Individual electric field is all using three-phase high-voltage power supply, cylindrical shape dry electrostatic cleaner exiting flue gas dust concentration≤20mg/Nm3.Essence
Flue gas after dedusting is washed, cooled by wash cooling tower, and wash cooling tower is provided with self-replaced type explosion venting valve.By washing
The flue gas wash, cooled switches to diffusing chimney by switching station and diffused or gas chamber storage.Filled in diffusing chimney bottom provided with dehydration
Put, dewater treatment is carried out to flue gas before diffusing, remove dust-laden drop, further purify coal gas, diffuse ignition device
Exhaust gas dust concentration≤10mg/Nm after diffusing3。
Brief description of the drawings
Fig. 1 shows the process system to ultra-clean dedusting of flue gas of converter of the present invention.
Embodiment
As shown in figure 1, a kind of process system to ultra-clean dedusting of flue gas of converter, it includes devaporizer 2, double fluid
Spray gun 1, raw coke oven gas pipeline 3, banana-bends belly chain type cinder conveyer 15, cinder storehouse 16, cylindrical shape dry electrostatic cleaner 4, fine ash
Ash-transmission system 17, fine ash storehouse 18, clean coal feed channel 6, electric cleaner (4), its four electric fields all using three-phase high-voltage power supply 5,
The exiting flue gas dust concentration of cylindrical shape dry electrostatic cleaner 4≤20mg/Nm3.Axial flow blower 7, muffler 8 set washing below
Cooling tower 9, wash cooling top of tower cone section sets self-replaced type explosion venting valve 10, the flue gas for washing, cooling by wash cooling tower
Switch to that diffusing chimney 13 is diffused or gas chamber 19 is stored by switching station 11.Dehydration device 12 is provided with the bottom of diffusing chimney 13,
Dewater treatment is carried out to flue gas before diffusing, dust-laden drop is removed, further purifies coal gas, the igniting of igniter 14 is diffused and puts
Exhaust gas dust concentration≤10mg/Nm after dissipating3。
Process system is cold including devaporizer 2, the first pipe-line system, electrostatic precipitator 4, second pipe system, washing
But tower 9, switching station 11 and flue gas are diffused or storage system；Devaporizer 2 connects electrostatic precipitator by the first pipe-line system
4, electrostatic precipitator 4 connects wash cooling tower 9 by second pipe system, and wash cooling tower 9 is connected by second pipe system
Switching station 11, the connection flue gas of switching station 11 is diffused or storage system.Wherein, the top of devaporizer 2 is provided with double-flow spray gun 1.
First pipe-line system is raw coke oven gas pipeline 3, and the bottom of devaporizer 2 is provided with banana-bends belly chain type cinder conveyer 15, banana
The curved connection cinder of belly chain type cinder conveyer 15 storehouse 16.Electrostatic precipitator 4 is preferably cylindrical shape dry electrostatic cleaner 4, its top
High voltage power supply is provided with, preferably four electric fields, four electric fields use three-phase high-voltage power supply 5.The bottom of electrostatic precipitator 4 is set
There are fine ash ash-transmission system 17, the connection fine ash of fine ash ash-transmission system 17 storehouse 18.Second pipe system is clean coal feed channel 6, purified gas
The connection of axial flow fan 7 first of pipeline 6, the joint noise reduction device 8 of axial flow blower 7 connects wash cooling tower 9 by muffler afterwards.Wash
Wash the top of cooling tower 9 cone section and self-replaced type explosion venting valve 10 is set.Second pipe system is clean coal feed channel 6, and wash cooling tower 9 leads to
Cross clean coal feed channel 6 connection switching station 11, flue gas diffuse or storage system be diffusing chimney 13 or gas chamber 19, through washing it is cold
But tower 9 is washed, the flue gas that cools is switched to that diffusing chimney 13 is diffused or gas chamber 19 is stored by switching station 11.The bottom of diffusing chimney 13
Portion is provided with dehydration device 12, and the top of diffusing chimney 13, which is set, diffuses igniter 14.
A kind of process to ultra-clean dedusting of flue gas of converter, it comprises the following steps：(1) in convertor steelmaking process
The high-temperature flue gas of generation first passes around gasification cooling flue, and flue gas is cooled for the first time while heat energy is reclaimed；(2) pass through
The flue gas of gasification cooling flue cooling carries out the reducing temperature twice of flue gas by devaporizer 2, what the top of devaporizer 2 was set
Double-flow spray gun 1, sprays water to flue gas, and devaporizer 2 carries out rough dedusting to flue gas and quenched；(3) devaporizer 2 is passed through
Cooling, rough dedusting, it is quenched after flue gas enter electrostatic precipitator 4, preferably cylindrical shape dry electrostatic cleaner carries out essence and removed
Dirt, preferably electric cleaner have four electric fields, and four electric fields are preferably all using three-phase high-voltage power supply, it is preferable that electrostatic precipitator
Exiting flue gas dust concentration≤20mg/Nm3；(4) flue gas after the refined dedusting of electrostatic precipitator 4 enters by wash cooling tower 9
Row washing, cooling, it is preferable that wash cooling tower 9 is provided with self-replaced type explosion venting valve 10；(5) wash, cool by wash cooling tower 9
Flue gas switch to that diffusing chimney 13 is diffused or gas chamber 19 is stored by switching station 11, filled in the bottom of diffusing chimney 13 provided with dehydration
12 are put, dewater treatment is carried out to flue gas before diffusing, dust-laden drop, further purifying smoke, the top of diffusing chimney 13 is removed
Igniter 14 is diffused in setting, diffuses exhaust gas dust concentration≤10mg/Nm after the ignition bleeding of igniter 143.Evaporation cooling
Device 2 connects electrostatic precipitator 4 by raw coke oven gas pipeline 3, and the bottom of devaporizer 2 is provided with banana-bends belly chain type cinder conveyer
15, the connection cinder of banana-bends belly chain type cinder conveyer 15 storehouse 16, the cinder collected by devaporizer 2 passes through banana-bends belly
Chain type cinder conveyer 15 is transported to cinder storehouse 16.It is preferred that, the bottom of electrostatic precipitator 4 is provided with fine ash ash-transmission system 17, and fine ash is defeated
The connection fine ash of ash system 17 storehouse 18, the fine ash collected by electrostatic precipitator 4 is transported to fine ash storehouse by fine ash ash-transmission system 17
18.Electrostatic precipitator 4 connects wash cooling tower 9, clean coal feed channel 6 connection of axial flow fan 7, axle first by clean coal feed channel 6
The joint noise reduction device 8 of flow fan 7, connects wash cooling tower 9 by muffler afterwards.
The high-temperature flue gas produced in convertor steelmaking process first passes around gasification cooling flue, to cigarette while heat energy is reclaimed
Gas is cooled for the first time.The flue gas cooled by gasification cooling flue carries out the reducing temperature twice of flue gas by devaporizer, together
When rough dedusting and quenched is carried out to flue gas.Cooling, rough dedusting, it is quenched after flue gas into cylindrical shape dry electrostatic cleaner carry out
Refined dedusting, four electric fields of electric cleaner are all using three-phase high-voltage power supply, cylindrical shape dry electrostatic cleaner exiting flue gas dust
Concentration≤20mg/Nm3.Flue gas after refined dedusting is washed, cooled by wash cooling tower, and wash cooling tower is provided with Self-resetting
Formula explosion venting valve.Flue gas by washing, cooling switches to diffusing chimney by switching station and diffused or gas chamber storage.In diffusing chimney
Bottom is provided with dehydration device, and dewater treatment is carried out to flue gas before diffusing, and removes dust-laden drop, further purifies coal gas, put
Scattered ignition device diffuse after exhaust gas dust concentration≤10mg/Nm3。
Wash cooling tower is set before switching station after axial flow blower, muffler, to entering diffusing chimney and gas chamber
Coal gas cooled, washed.70 DEG C of the gas temperature ＜ after cooling, washing, dust concentration≤10mg/Nm3.Due to washing
Wash cooling tower to be placed on after axial flow blower, once venting of dust explosion accident occurs for electric cleaner, impact can be produced to wash cooling tower, because
This needs to reinforce wash cooling tower and sets self-replaced type explosion venting valve in wash cooling top of tower cone section, discharges venting of dust explosion pressure
Shield of trying hard to keep wash cooling tower.70 DEG C of gas temperature ＜ after washing, belongs to saturation wet gas, containing dust-laden drop, in order to
Avoid diffusing chimney from " braving the rain " phenomenon occur, be provided with dehydration device in diffusing chimney bottom, flue gas is taken off before diffusing
Water process, and further remove dust-laden drop purification coal gas.Need simultaneously in wash cooling tower to diffusing chimney and wash cooling
Drainage arrangement is set on tower to the pipeline of gas chamber, with the condensed water in purging line and gravity sedimentation water.To ensure electric precipitation
The efficiency of dust collection of device, makes wash cooling tower inlet flue gas dust concentration stable in 20mg/Nm3Hereinafter, four electricity of electric cleaner
Field is all using three-phase high-voltage power supply.
Claims (10)
1. a kind of process system to ultra-clean dedusting of flue gas of converter, it is characterised in that the process system includes evaporating cold
But device (2), the first pipe-line system, electrostatic precipitator (4), second pipe system, wash cooling tower (9), switching station (11) and cigarette
Gas is diffused or storage system；Devaporizer (2) connects electrostatic precipitator (4), electrostatic precipitator (4) by the first pipe-line system
Wash cooling tower (9) is connected by second pipe system, wash cooling tower (9) connects switching station by second pipe system
(11), switching station (11) connection flue gas is diffused or storage system.
2. a kind of process system to ultra-clean dedusting of flue gas of converter according to claim 1, it is characterised in that evaporation
Cooler (2) top is provided with double-flow spray gun (1).
3. a kind of process system to ultra-clean dedusting of flue gas of converter according to claim 1 or 2, it is characterised in that
First pipe-line system is raw coke oven gas pipeline (3), and the bottom of devaporizer (2) is provided with banana-bends belly chain type cinder conveyer
(15), banana-bends belly chain type cinder conveyer (15) connection cinder storehouse (16).
4. a kind of process system to ultra-clean dedusting of flue gas of converter according to one of claim 1-3, its feature exists
In electrostatic precipitator (4) is preferably cylindrical shape dry electrostatic cleaner (4), and its top is provided with high voltage power supply, preferably four
Electric field, four electric fields use three-phase high-voltage power supply (5).
5. a kind of process system to ultra-clean dedusting of flue gas of converter according to one of claim 1-4, its feature exists
In the bottom of electrostatic precipitator (4) is provided with fine ash ash-transmission system (17), fine ash ash-transmission system (17) connection fine ash storehouse (18).
6. a kind of process system to ultra-clean dedusting of flue gas of converter according to one of claim 1-5, its feature exists
In second pipe system is clean coal feed channel (6), and clean coal feed channel (6) connection of axial flow fan (7) first, axial flow blower (7) connects
Muffler (8) is connect, wash cooling tower (9) is connected by muffler afterwards.
7. a kind of process system to ultra-clean dedusting of flue gas of converter according to one of claim 1-7, its feature exists
In cone section sets self-replaced type explosion venting valve (10) at the top of wash cooling tower (9).It is preferred that, second pipe system is clean coal feed channel
(6), wash cooling tower (9) connects switching station (11) by clean coal feed channel (6), and flue gas is diffused or storage system is diffusing chimney
(13) or gas chamber (19), washed by wash cooling tower (9), the flue gas of cooling switches to diffusing chimney by switching station (11)
(13) diffuse or gas chamber (19) storage.It is preferred that, diffusing chimney (13) bottom is provided with dehydration device (12), diffusing chimney (13) top
Portion sets and diffuses igniter (14).
8. a kind of process to ultra-clean dedusting of flue gas of converter, it comprises the following steps：
(1) high-temperature flue gas produced in convertor steelmaking process first passes around gasification cooling flue, to cigarette while heat energy is reclaimed
Gas is cooled for the first time；
(2) flue gas cooled by gasification cooling flue carries out the reducing temperature twice of flue gas, evaporation cooling by devaporizer (2)
The double-flow spray gun (1) that device (2) top is set, sprays water to flue gas, and devaporizer (2) carries out rough dedusting and tune to flue gas
Matter；
(3) by devaporizer (2) cooling, rough dedusting, it is quenched after flue gas enter electrostatic precipitator (4), preferably cylinder
Shape dry electrostatic cleaner, carries out refined dedusting, and preferably electric cleaner has four electric fields, and four electric fields are preferably all using three-phase
High voltage power supply, it is preferable that electrostatic precipitator exiting flue gas dust concentration≤20mg/Nm3；
(4) flue gas after electrostatic precipitator (4) refined dedusting is washed by wash cooling tower (9), cooled, it is preferable that washed
Cooling tower (9) is washed provided with self-replaced type explosion venting valve (10)；
(5) flue gas by wash cooling tower (9) washing, cooling switches to diffusing chimney (13) by switching station (11) and diffused or coal
Gas holder (19) is stored, and dehydration device (12) is provided with diffusing chimney (13) bottom, and dewater treatment is carried out to flue gas before diffusing,
Remove to set at the top of dust-laden drop, further purifying smoke, diffusing chimney (13) and diffuse igniter (14), diffuse igniter
(14) exhaust gas dust concentration≤10mg/Nm after ignition bleeding3。
9. method according to claim 8, it is characterised in that devaporizer (2) connects quiet by raw coke oven gas pipeline (3)
Electric cleaner (4), the bottom of devaporizer (2) is provided with banana-bends belly chain type cinder conveyer (15), banana-bends belly chain type
Cinder conveyer (15) connects cinder storehouse (16), and the cinder collected by devaporizer (2) passes through banana-bends belly chain type cinder conveyer
(15) it is transported to cinder storehouse (16).It is preferred that, the bottom of electrostatic precipitator (4) is provided with fine ash ash-transmission system (17), the defeated ash of fine ash
System (17) connects fine ash storehouse (18), and the fine ash collected by electrostatic precipitator (4) is transported to by fine ash ash-transmission system (17)
Fine ash storehouse (18).
10. method according to claim 8 or claim 9, it is characterised in that electrostatic precipitator (4) is connected by clean coal feed channel (6)
Connect wash cooling tower (9), clean coal feed channel (6) connection of axial flow fan (7) first, axial flow blower (7) joint noise reduction device (8), it
Wash cooling tower (9) is connected by muffler afterwards.
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| CN201710351647.2A CN107034335A (en) | 2017-05-18 | 2017-05-18 | A kind of process system and method to ultra-clean dedusting of flue gas of converter |
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| CN201710351647.2A CN107034335A (en) | 2017-05-18 | 2017-05-18 | A kind of process system and method to ultra-clean dedusting of flue gas of converter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107858477A (en) * | 2017-11-20 | 2018-03-30 | 唐山新宝泰钢铁有限公司 | Converter gas composite dedusting system |
| CN108977616A (en) * | 2018-10-12 | 2018-12-11 | 中冶京诚工程技术有限公司 | Flue gas dry cleaning of converter and recovery system |
| CN109622222A (en) * | 2018-11-21 | 2019-04-16 | 浙江菲达环保科技股份有限公司 | Alkali recovery furnace flue gas high effect dust cleaner and dust removal method |
| CN109913614A (en) * | 2019-02-01 | 2019-06-21 | 无锡红旗除尘设备有限公司 | A kind of minimum discharge cleaning treatment system of dry method dust release flue gas of converter |
| CN110184409A (en) * | 2019-07-18 | 2019-08-30 | 无锡红旗除尘设备有限公司 | The dry method electricity bag that plume is eliminated in flue gas minimum discharge of converter combines dust pelletizing system |
| CN110184410A (en) * | 2019-07-18 | 2019-08-30 | 无锡红旗除尘设备有限公司 | Flue gas minimum discharge of converter and the dry-dedusting system for eliminating plume |
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| CN110935263A (en) * | 2019-12-18 | 2020-03-31 | 钢城集团凉山瑞海实业有限公司 | Dry dedusting and spraying purification process for converter flue gas |
| CN111593164A (en) * | 2020-06-03 | 2020-08-28 | 中冶华天工程技术有限公司 | Converter primary flue gas ultra-clean dust pelletizing system |
| CN113684341A (en) * | 2021-08-17 | 2021-11-23 | 中冶东方工程技术有限公司 | System and method for purifying primary flue gas of converter |
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| CN107858477A (en) * | 2017-11-20 | 2018-03-30 | 唐山新宝泰钢铁有限公司 | Converter gas composite dedusting system |
| CN108977616A (en) * | 2018-10-12 | 2018-12-11 | 中冶京诚工程技术有限公司 | Flue gas dry cleaning of converter and recovery system |
| CN109622222A (en) * | 2018-11-21 | 2019-04-16 | 浙江菲达环保科技股份有限公司 | Alkali recovery furnace flue gas high effect dust cleaner and dust removal method |
| CN109913614B (en) * | 2019-02-01 | 2023-11-07 | 无锡红旗除尘设备有限公司 | Ultralow emission purifying treatment system for converter primary dry dedusting and diffusing flue gas |
| CN109913614A (en) * | 2019-02-01 | 2019-06-21 | 无锡红旗除尘设备有限公司 | A kind of minimum discharge cleaning treatment system of dry method dust release flue gas of converter |
| CN110184409A (en) * | 2019-07-18 | 2019-08-30 | 无锡红旗除尘设备有限公司 | The dry method electricity bag that plume is eliminated in flue gas minimum discharge of converter combines dust pelletizing system |
| CN110184410A (en) * | 2019-07-18 | 2019-08-30 | 无锡红旗除尘设备有限公司 | Flue gas minimum discharge of converter and the dry-dedusting system for eliminating plume |
| CN110184410B (en) * | 2019-07-18 | 2023-12-05 | 无锡红旗除尘设备有限公司 | Dry dust removal system for ultralow emission of primary flue gas and smoke plume elimination of converter |
| CN110184409B (en) * | 2019-07-18 | 2023-12-05 | 无锡红旗除尘设备有限公司 | Dry-method electric bag combined dust removal system for eliminating smoke plume by ultralow emission of primary flue gas of converter |
| CN110628982A (en) * | 2019-11-14 | 2019-12-31 | 北京博鹏中科环保科技有限公司 | LT dry dedusting system and LT dry dedusting method |
| CN110935263A (en) * | 2019-12-18 | 2020-03-31 | 钢城集团凉山瑞海实业有限公司 | Dry dedusting and spraying purification process for converter flue gas |
| CN111593164A (en) * | 2020-06-03 | 2020-08-28 | 中冶华天工程技术有限公司 | Converter primary flue gas ultra-clean dust pelletizing system |
| CN113684341A (en) * | 2021-08-17 | 2021-11-23 | 中冶东方工程技术有限公司 | System and method for purifying primary flue gas of converter |
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