CN205919305U - High cloud of dust gas disposal of smoke treatment device and rotary hearth furnace high temperature and waste heat utilization system - Google Patents
High cloud of dust gas disposal of smoke treatment device and rotary hearth furnace high temperature and waste heat utilization system Download PDFInfo
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- CN205919305U CN205919305U CN201620733790.9U CN201620733790U CN205919305U CN 205919305 U CN205919305 U CN 205919305U CN 201620733790 U CN201620733790 U CN 201620733790U CN 205919305 U CN205919305 U CN 205919305U
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- 239000000428 dust Substances 0.000 title claims abstract description 33
- 239000007789 gas Substances 0.000 title claims abstract description 31
- 239000000779 smoke Substances 0.000 title claims abstract description 14
- 239000002918 waste heat Substances 0.000 title claims abstract description 11
- 239000003546 flue gas Substances 0.000 claims abstract description 89
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 88
- 238000004062 sedimentation Methods 0.000 claims abstract description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000001816 cooling Methods 0.000 claims abstract description 30
- 238000012545 processing Methods 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 239000003517 fume Substances 0.000 claims description 14
- 230000007246 mechanism Effects 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims description 11
- 238000009792 diffusion process Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000000112 cooling gas Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 239000000498 cooling water Substances 0.000 description 6
- 238000005507 spraying Methods 0.000 description 6
- 238000009413 insulation Methods 0.000 description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- 235000019504 cigarettes Nutrition 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000003500 flue dust Substances 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000006392 deoxygenation reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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- 238000010248 power generation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
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- 239000006228 supernatant Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Classifications
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- 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
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Abstract
The utility model relates to a smoke treatment device and dispose this processing apparatus's high cloud of dust gas disposal of rotary hearth furnace high temperature and waste heat utilization system, this processing apparatus include sedimentation furnace, high temperature exhaust -heat boiler, low -temperature exhaust -heat boiler and steam pocket, sedimentation furnace be heated the wall at least the part for the water -cooling wall, the steam pocket has water inlet, delivery port, air inlet and gas outlet, and the heat transferring medium of delivery port and each water -cooling wall enters the mouth and communicates, and the air inlet communicates with the heat exchange medium outlet of each water -cooling wall, and water inlet and low -temperature exhaust -heat boiler's heat exchange medium outlet communicates, and gas outlet and high temperature exhaust -heat boiler's heat transferring medium entry communicates. The utility model discloses a reduce the sedimentation furnace internal heating surface, can effectively improve the waste heat utilization and the effect of flue gas, reduce the body flue of over heater, economizer and the condition appearance that follow -up flue takes place the jam simultaneously, effectively improve the corruption condition that the flue gas caused to equipment.
Description
Technical field
This utility model is related to a kind of flue gas processing device and the rotary hearth furnace high-temperature high dust being configured with this flue gas processing device
Fume treatment and bootstrap system.
Background technology
Rotary hearth furnace is a kind of direct reduction iron making technique, and some developed countries have been obtained for more widely should abroad
With；In the last few years, some iron and steel enterprises were also gradually promoted and applied at home.In direct reduced iron by rotary hearth furnace production process
Produce a large amount of high-temperature flue gas and zinc-containing dust, there is the prospect that UTILIZATION OF VESIDUAL HEAT IN and zinc resource reclaim.However, due to rotary hearth furnace flue gas
The characteristic of high-temperature high dust, up to 1000 DEG C～1200 DEG C of flue-gas temperature, viscosity is higher at high temperature for flue gas zinc-containing dust, therefore turns
There are the following problems for the UTILIZATION OF VESIDUAL HEAT IN of bottom kiln gas and zinc resource recovery:
First, block, in high-temperature flue and low temperature flue etc., blockage problem easily occurs.Because rotary hearth furnace flue dust ash component and
Characteristic is complicated, changeable, and ash fusion point temperature range is larger, has caking property at high temperature, is susceptible to block, affects system operation
Stability and run time.
2nd, corrode, the heat exchanger such as water-cooling wall, superheater and economizer easily corrodes.Rotary hearth furnace bulk process is being carried out
During direct reduction iron making, need to add binding agent, contain chlorine in general binding agent, cause in the rotary hearth furnace flue gas of high-temperature high dust
Containing multiple villaumites, in the presence of having water vapour, can be formed " salt fog ", salt fog causes to metal material surface to corrode, and can reduce
The service life of the heat exchangers such as water-cooling wall, superheater and economizer etc., affects system run all right.
3rd, the thermal efficiency is low, and rotary hearth furnace flue gas typically carries out heat recovery, heat recovery efficiency using conventional power plant boiler
Relatively low.
Utility model content
This utility model embodiment provides a kind of flue gas processing device and the rotary hearth furnace height being configured with this flue gas processing device
The high cloud of dust gas disposal of temperature and bootstrap system, at least can solve the segmental defect of prior art.
This utility model embodiment is related to a kind of flue gas processing device, including the sedimentation being sequentially connected along flue gas circulating direction
Stove, high-temperature residual heat boiler and low temperature exhaust heat boiler, the heated wall surface at least partially water-cooling wall of described sedimentation furnace.
As one of embodiment, above-mentioned flue gas processing device also includes drum, described drum have water inlet, outlet,
Air inlet and gas outlet, described outlet is connected with the heat transferring medium entrance of each described water-cooling wall, and described air inlet is described with each
The heat transferring medium outlet of the heat transferring medium outlet of water-cooling wall, described water inlet and described low temperature exhaust heat boiler, described
Gas outlet is connected with the heat transferring medium entrance of described high-temperature residual heat boiler.
As one of embodiment, in described sedimentation furnace, it is provided with adjusting material spraying mechanism.
As one of embodiment, the heating surface of described sedimentation furnace, described high-temperature residual heat boiler and described low temperature exhaust heat boiler
Outside is equipped with online ash removal mechanism, and described high-temperature residual heat boiler and described low temperature exhaust heat boiler bottom are all correspondingly provided with ash silo.
As one of embodiment, described online ash removal mechanism includes mechanical vibrator unit and elastic rapping unit.
The present embodiment is related to a kind of rotary hearth furnace high-temperature high dust fume treatment and bootstrap system, including cigarette as above
Flash Gas Compression Skid System, the smoke inlet of described sedimentation furnace is connected with the exhanst gas outlet of rotary hearth furnace by high-temperature flue gas pipeline；Described system
System also includes UTILIZATION OF VESIDUAL HEAT IN subsystem and dedusting subsystem, and described UTILIZATION OF VESIDUAL HEAT IN subsystem passes through more than jet chimney and described high temperature
The heat transferring medium outlet of heat boiler, described dedusting subsystem passes through the cigarette of low-temperature flue gas pipeline and described low temperature exhaust heat boiler
Gas outlet.
As one of embodiment, described UTILIZATION OF VESIDUAL HEAT IN subsystem includes steam turbine and electromotor, the steam of described steam turbine
Entrance passes through the heat transferring medium outlet of jet chimney and described high-temperature residual heat boiler, and the steam (vapor) outlet of described steam turbine connects
There is steam cooling body, described steam cooling body passes through the heat transferring medium of condensing hot air furnace pipeline and described low temperature exhaust heat boiler
Entrance connects.
As one of embodiment, described jet chimney is provided with direct-contact desuperheater.
As one of embodiment, described condensing hot air furnace line branching is connected with a condensed water spray pipeline, described condensation
Water sprayer tube way outlet end is connected with described direct-contact desuperheater, and is provided with control valve in described condensed water spray pipeline.
As one of embodiment, described dedusting subsystem include the eddy flow wind-mixer being sequentially connected along flue gas circulating direction and
Sack cleaner, described eddy flow wind-mixer is provided with by the cooling gas inlet of Valve controlling.
As one of embodiment, described high-temperature flue gas pipeline is provided with inlet valve, in described rotary hearth furnace and described inlet valve
Between pipeline on be connected with and diffuse bypass, described diffuse bypass and be provided with diffusion valve.
This utility model embodiment at least achieves following beneficial effect: by transforming to conventional boiler of power plant,
Superheater and economizer are all moved and is placed in outside sedimentation furnace, reduce sedimentation furnace internal heating surface, on the one hand, can rationally reduce high-temperature flue gas
Temperature, simultaneously flue gas flow rate be effectively controlled in sedimentation furnace, so that the settling amount of dust in flue gas is significantly increased, can avoid
High temperature, the flue gas of high dirt are directly entered superheater and economizer, can reduce superheater, the body flue of economizer and follow-up flue
The situation that blocking occurs occurs；On the other hand, by controlling temperature and the flow velocity of flue gas, in conjunction with the adjusting material of setting in sedimentation furnace
Spraying mechanism carries out modifier treatment to flue gas, can be effectively improved the corrosion condition that flue gas causes to equipment；In addition, passing through sedimentation furnace
The preferred arrangement of internal heating surface, sedimentation furnace external superheat device and economizer surface, can effectively improve flue gas utilization rate of waste heat and
Exhaust heat utilization effect.
Brief description
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or in description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise not paying creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Rotary hearth furnace high-temperature high dust fume treatment and the structure of bootstrap system that Fig. 1 provides for this utility model embodiment
Schematic diagram.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely description is it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not making the premise of creative work
Lower obtained all other embodiment, broadly falls into the scope of this utility model protection.
Embodiment one
As Fig. 1, a kind of this utility model embodiment flue gas processing device 2 of offer, can be used for processing each of steel plant's generation
Plant flue gas, be particularly suited for processing the high-temperature high dust flue gas that rotary hearth furnace 1 produces.This device includes sedimentation furnace 22, high-temperature residual heat pot
Stove 23 and low temperature exhaust heat boiler 24, described sedimentation furnace 22, described high-temperature residual heat boiler 23 and described low temperature exhaust heat boiler 24 are along cigarette
Gas circulating direction is sequentially connected, and the smoke inlet of sedimentation furnace 22 is as the smoke inlet of this flue gas processing device 2, low temperature exhaust heat pot
The exhanst gas outlet of stove 24 is as the exhanst gas outlet of this flue gas processing device 2.It is in underpants shape that sedimentation furnace 22 is preferably, its smoke inlet
Positioned at the bottom of one trouser legs, the heated wall surface at least partially water-cooling wall of sedimentation furnace 22, wherein, below sedimentation furnace 22 roof
Heating surface both preferably adopts water-cooling wall everywhere, and the visual actual condition of this roof is used with or without water-cooling wall；Each water-cooling wall
Water inlet is respectively positioned on its bottom, and outlet is located at its top.As Fig. 1, high-temperature residual heat boiler 23 is preferably and is close to sedimentation furnace 22 and sets
Put, that is, the smoke inlet of high-temperature residual heat boiler 23 is directly docked with the exhanst gas outlet of sedimentation furnace 22, to shorten high-temperature flue gas in cigarette
Movement travel in feed channel, it is to avoid cause line clogging.
Further, above-mentioned flue gas processing device 2 also includes drum 21, and described drum 21 has water inlet, outlet, enters
QI KOU and gas outlet, described outlet is connected with the heat transferring medium entrance of each described water-cooling wall, described air inlet and each described water
The heat transferring medium outlet of the heat transferring medium outlet of cold wall, described water inlet and described low temperature exhaust heat boiler 24, described
Gas outlet is connected with the heat transferring medium entrance of described high-temperature residual heat boiler 23.Water in drum 21 enters the water-cooled in sedimentation furnace 22
In wall, carry out heat exchange and be heated to be steam water interface with entering the high-temperature flue gas in sedimentation furnace 22, steam water interface enters to
In drum 21；Steam in drum 21 enters in high-temperature residual heat boiler 23, with the high-temperature flue gas entering in high-temperature residual heat boiler 23
Carry out heat exchange and be heated to be superheated steam, superheated steam can be used for generating etc. and carries out UTILIZATION OF VESIDUAL HEAT IN；Low temperature exhaust heat boiler 24 connects
Receive cooling water, and carry out heat exchange with entering its interior low-temperature flue gas, by cooling water heat temperature raising, the cooling water of heat temperature raising enters
Enter in drum 21 to supplement the water body in drum 21.Preferably, the superheated steam waste heat obtaining through high-temperature residual heat boiler 23 heating
The condensed water being obtained by the use of rear cooling can as the cooling water of low temperature exhaust heat boiler 24, thus realizing recycling of cooling water,
The effectively save energy.
It is further provided with adjusting material spraying mechanism in above-mentioned sedimentation furnace 22, for spraying adjusting material, to remove flue gas
In the flue dust such as nox, cl, s of containing pollutant, reduce the degree of corrosion that flue gas causes to equipment.
In said structure, in sedimentation furnace 22, it is provided with water-cooling wall, that is, form a vaporizer, be provided with high-temperature residual heat boiler 23 and change
Hot device, that is, form a superheater, be provided with heat exchanger in low temperature exhaust heat boiler 24, that is, form an economizer.Through sedimentation furnace 22, high temperature
Waste heat boiler 23 and low temperature exhaust heat boiler 24 are processed successively, and the exhaust gas temperature of low temperature exhaust heat boiler 24 is at 140 DEG C～170 DEG C.This
Embodiment, by transforming to conventional boiler of power plant, superheater and economizer is all moved and is placed in outside sedimentation furnace 22, and it is heavy to reduce
Fall stove 22 internal heating surface, on the one hand, can rationally reduce the temperature of high-temperature flue gas, flue gas flow rate is had in sedimentation furnace 22 simultaneously
Effect controls, and so that the settling amount of dust in flue gas is significantly increased, and high temperature, the flue gas of high dirt can be avoided to be directly entered superheater and save coal
Device, can reduce superheater, the body flue of economizer and follow-up flue and occur the situation of blocking to occur；On the other hand, by control
The temperature of tobacco curing gas and flow velocity, the adjusting material spraying mechanism in conjunction with setting in sedimentation furnace 22 carries out modifier treatment to flue gas, can have
Effect improves the corrosion condition that flue gas causes to equipment；In addition, by sedimentation furnace 22 internal heating surface, sedimentation furnace 22 external superheat device and province
The preferred arrangement of coal device heating surface, can effectively improve utilization rate of waste heat and the exhaust heat utilization effect of flue gas.
In the present embodiment, the arrangement of sedimentation furnace 22, high-temperature residual heat boiler 23 and low temperature exhaust heat boiler 24 is rain-proof shelter
Half outdoor arrangement；Above-mentioned high-temperature residual heat boiler 23 is preferably and adopts horizontal, single pressure, Natural Circulation HRSG；Sedimentation furnace 22,
High-temperature residual heat boiler 23, the fume side of low temperature exhaust heat boiler 24 all using wear-resisting, anti-corrosion material, water-cooling wall and high-temperature residual heat boiler
23 heating surface is both preferably and adopts metal alloy compositions and surface spraying is wear-resisting and anticorrosive coat, low temperature exhaust heat boiler 24 heating surface
Preferably adopt thick-walled pipe.It is provided with steam-water separator it is ensured that steam supply quality meets " thermal power generation unit and steam in drum 21
Power-equipment Water Vapor Quality standard " (gb12145)；Drum 21 is generally pressure-bearing type, can be disposed at sedimentation furnace 22 furnace roof.In high temperature
The body flue outer wrap of waste heat boiler 23 and low temperature exhaust heat boiler 24 has heat-insulation layer, also sets outside the water-cooling wall of sedimentation furnace 22
It is equipped with heat-insulation layer, outside each heat-insulation layer, be provided with backplate；The design of heat-insulation layer should ensure that and normally runs in this flue gas processing device 2
Under the conditions of, when ambient temperature is 25 DEG C, shield face temperature is not more than 50 DEG C.
As a kind of preferred structure of the present embodiment, described sedimentation furnace 22, described high-temperature residual heat boiler 23 and described low temperature
It is equipped with online ash removal mechanism, described high-temperature residual heat boiler 23 and described low temperature exhaust heat boiler outside the heating surface of waste heat boiler 24
24 bottoms are all correspondingly provided with ash silo.Online ash removal mechanism adopts the ash disposal mode of mechanical vibrator+elasticity rapping, and its concrete structure is
Those skilled in the art can obtain according to common knowledge, and here is omitted for concrete structure.In sedimentation furnace 22, high-temperature residual heat
Maintenance door, manhole and detection hole etc. are all disposed with boiler 23 and low temperature exhaust heat boiler 24, what satisfaction was run, and overhauled and tested will
Ask, manhole also can use as deashing passage.
Embodiment two
As Fig. 1, the present embodiment is related to a kind of rotary hearth furnace high-temperature high dust fume treatment and bootstrap system, is configured with above-mentioned
The flue gas processing device 2 that embodiment one is provided, the smoke inlet of described sedimentation furnace 22 passes through high-temperature flue gas pipeline and rotary hearth furnace 1
Exhanst gas outlet connection.Described system also includes UTILIZATION OF VESIDUAL HEAT IN subsystem 3, and described UTILIZATION OF VESIDUAL HEAT IN subsystem 3 passes through jet chimney
Heat transferring medium outlet with described high-temperature residual heat boiler 23.
Usually, above-mentioned UTILIZATION OF VESIDUAL HEAT IN subsystem 3 is mainly used in generating electricity, and that is, above-mentioned UTILIZATION OF VESIDUAL HEAT IN subsystem 3 is the system that generates electricity
System, this UTILIZATION OF VESIDUAL HEAT IN subsystem 3 includes steam turbine 35, and this steam turbine 35 is connected with electromotor 36, the steam of described steam turbine 35
Entrance passes through the heat transferring medium outlet of jet chimney and described high-temperature residual heat boiler 23.
Further, as Fig. 1, the steam (vapor) outlet of described steam turbine 35 is connected with steam cooling body, described steam cooling
Mechanism is connected with the heat transferring medium entrance of described low temperature exhaust heat boiler 24 by condensing hot air furnace pipeline, can be real by said structure
Show recycling of cooling water.Wherein, above-mentioned steam cooling body includes condenser 37, is provided with heat exchanger in condenser 37, should
The heat transferring medium of heat exchanger imports and exports the recirculated water import and export pipeline communication with cooling tower 38, and superheated steam enters in steam turbine 35
Enter heat exchange in condenser 37 after the conversion of row energy and be condensed into condensed water, utilized with being back in cryogenic heat exchanger.Upper
State and be sequentially provided with above-mentioned condenser 37, condensate pump, bleeder heater 34, oxygen-eliminating device along water (flow) direction on condensing hot air furnace pipeline
33 and feed pump, condensed water is heated to by uniform temperature by bleeder heater 34, to improve boiler feed temperature, thus improving
System thermal efficiency and waste heat recovery effect.
As one of embodiment, such as Fig. 1, described jet chimney is provided with direct-contact desuperheater 31, due to rotary hearth furnace 1 flue gas
Matter often has fluctuation, causes the superheated steam property producing unstable, and affects the normal operation of electricity generation system, above-mentioned by arranging
Direct-contact desuperheater 31, can be by the temperature stabilization of superheated steam in a suitable scope, it is to avoid the change of rotary hearth furnace 1 smoke property is made
The system operation becoming is unstable and affect equipment life.It is further preferred that described condensing hot air furnace line branching is connected with one
Condensed water spray pipeline 32, described condensed water spray pipeline 32 port of export is connected with described direct-contact desuperheater 31, and in described cold
Solidifying Water spray pipeline 32 is provided with control valve；When needing spray desuperheating, in introducing portion condensed water to direct-contact desuperheater 31, from
And energy resource consumption can be reduced further.
As one of embodiment, such as Fig. 1, described high-temperature flue gas pipeline is provided with inlet valve 6, in described rotary hearth furnace 1 and institute
State to be connected with the pipeline between inlet valve 6 and diffuse bypass 5, described diffuse bypass and 5 be provided with diffusion valve 51.This diffuses bypass 5
Main inclusion exhaust stack, this exhaust stack is connected on high-temperature flue gas pipeline, and diffusion valve 51 is i.e. on this exhaust stack.By setting
Diffuse bypass 5, when above-mentioned smoke processing system is because of disorderly closedown, rotary hearth furnace 1 flue gas temporarily can diffuse bypass 5 rows by this
Put, ensured the normal production of rotary hearth furnace body.
Embodiment three
As Fig. 1, the present embodiment is related to a kind of rotary hearth furnace high-temperature high dust fume treatment and bootstrap system, is configured with above-mentioned
The flue gas processing device 2 that embodiment one is provided, the smoke inlet of described sedimentation furnace 22 passes through high-temperature flue gas pipeline and rotary hearth furnace 1
Exhanst gas outlet connection.Described system also includes dedusting subsystem 4, and described dedusting subsystem 4 passes through low-temperature flue gas pipeline and institute
State the exhanst gas outlet connection of low temperature exhaust heat boiler 24.
As one of embodiment, described dedusting subsystem 4 includes the eddy flow wind-mixer being sequentially connected along flue gas circulating direction
41 and sack cleaner 42, described eddy flow wind-mixer 41 is provided with by the cooling gas inlet of Valve controlling.Above-mentioned eddy flow wind-mixer
41 effect is: when working condition that sack cleaner 42 filter bag can not bear, is entered by above-mentioned control cooling gas
The unlatching of the valve of mouth, is introduced cooling gas (as outdoor air) and is mixed with flue gas, make flue-gas temperature drop to desired value, to play
The purpose of protection sack cleaner 42 filter bag.Before above-mentioned eddy flow wind-mixer 41 passes through flue gas chilling change entrance sack cleaner 42
Flue gas in dust states of matter it is ensured that sack cleaner 42 is not pasted bag, is not corroded.Sack cleaner 42 outlet connects air-introduced machine
43, through air-introduced machine 43, the purification gas after dedusting are delivered to chimney 44 and discharge.
Above-mentioned sack cleaner 42 includes sack cleaner body, ash-transmission system, electric and robot control system(RCS) and heat-insulation layer, bag
Upper box (air-purifying chamber) that formula cleaner unit body includes being sequentially arranged from top to bottom, middle casing (dust and gas room), lower box, in addition also
Include blowing device, defecator (filter bag, filter bag frame) and ash-discharging device etc., wherein, in top box body, be provided with above-mentioned injection
Device, middle casing be provided with ash-laden gas import and export airduct, flow distributor, filter bag hanging in middle cabinet space, ash bucket
It is arranged on the bottom of sack cleaner body as lower box, for collecting the dust falling from filter bag supernatant.Enter bag-type dust
The flue gas of device 42 enters raising middle flask body after flow distributor distribution air quantity, and dust-contained airflow ecto-entad flows through filter bag to be carried out
Filter, big dust particle is delayed at filter bag appearance, and clean flue gas rises in bag, discharges after bag mouth and upper box.Filter bag table
The dust in face is continuously increased, and leads to filtration resistance to be continuously increased, and when reaching certain higher limit, needs to filter bag ash removal；Deashing is adopted
Use pulse jet mode, with nitrogen as power, by blowing device by row to filter bag ash removal；When filtration resistance drops to lower limit
Stop deashing.After deashing, the dust on filter bag surface falls into ash bucket, is uniformly processed after collecting through ash conveying device.
As one of embodiment, such as Fig. 1, described high-temperature flue gas pipeline is provided with inlet valve 6, in described rotary hearth furnace 1 and institute
State to be connected with the pipeline between inlet valve 6 and diffuse bypass 5, described diffuse bypass and 5 be provided with diffusion valve 51.This diffuses bypass 5
Main inclusion exhaust stack, this exhaust stack is connected on high-temperature flue gas pipeline, and diffusion valve 51 is i.e. on this exhaust stack.By setting
Diffuse bypass 5, when above-mentioned smoke processing system is because of disorderly closedown, rotary hearth furnace 1 flue gas temporarily can diffuse bypass 5 rows by this
Put, ensured the normal production of rotary hearth furnace 1 body.
Example IV
As Fig. 1, the present embodiment is related to a kind of rotary hearth furnace high-temperature high dust fume treatment and bootstrap system, and it combines above-mentioned
Embodiment two and the structure of embodiment three, in the flue gas processing device 2 that is, above-described embodiment one is provided, the flue gas of sedimentation furnace 22
Entrance is connected with the exhanst gas outlet of rotary hearth furnace 1 by high-temperature flue gas pipeline, and the exhanst gas outlet of low temperature exhaust heat boiler 24 passes through low temperature
Flue is connected with above-mentioned dedusting subsystem 4, and the heat transferring medium outlet of high-temperature residual heat boiler 23 is connected with by jet chimney
Above-mentioned UTILIZATION OF VESIDUAL HEAT IN subsystem 3.
The specific work process of above-mentioned smoke processing system is as follows:
(1) open inlet valve 6, close diffusion valve 51, enter from 1100 DEG C about of rotary hearth furnace 1 of high-temperature high dust flue gases
Sedimentation furnace 22, makes the preliminary sedimentation in sedimentation furnace 22 of the flue dust in flue gas, meanwhile, high-temperature flue gas are entered with the water-cooling wall of sedimentation furnace 22
Row heat exchange, the water in water-cooling wall is heated to be steam water interface, enters drum 21 by the air inlet being arranged on drum 21 middle and upper part；
(2) after preliminary sedimentation in sedimentation furnace 22, high-temperature flue gas enter high-temperature residual heat boiler 23, with high-temperature residual heat boiler 23
Heat exchanger carry out heat exchange, the steam in heat exchanger is heated to be superheated steam, superheated steam is changed by high-temperature residual heat boiler 23
Thermal medium outlet enters steam turbine 35 through direct-contact desuperheater 31, and pushing turbine 35 rotor rotates, and drives electromotor 36 to carry out sending out
Electricity；
(3) steam is discharged into condenser 37 after doing work in steam turbine 35, is condensed into condensate, and condensate is by condensing
Device 37 is sent to bleeder heater 34 through condensate pump, enters oxygen-eliminating device 33, after deoxygenation in oxygen-eliminating device 33 after heat exchange
Water is sent to the heat exchanger of low temperature exhaust heat boiler 24 through feed pump；
(4) from high-temperature residual heat boiler 23, flue gas out enters low temperature exhaust heat boiler 24 by flue, with low temperature exhaust heat pot
Stove 24 heat exchanger carries out heat exchange, and by the water heat temperature raising in low temperature exhaust heat boiler 24 heat exchanger, the water of heating delivers to drum 21；
(5) flue gas enters eddy flow wind-mixer 41 from low temperature exhaust heat boiler 24 through flue, carries out cyclone dust removal, simultaneously basis
It is arranged on the temperature control feedback of the monitoring point within eddy flow wind-mixer 41, the mixed air quantity of adjustment, make flue-gas temperature drop to design load, to rise
Purpose to protection filter bag of dust collector；
(6) from eddy flow wind-mixer 41, flue gas out enters sack cleaner 42 by flue, carries out dedusting；
(7) from sack cleaner 42, flue gas out enters chimney 44 through air-introduced machine 43 by flue, exports from chimney 44
Enter air.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all this
Within the spirit of utility model and principle, any modification, equivalent substitution and improvement made etc., should be included in this utility model
Protection domain within.
Claims (10)
1. a kind of flue gas processing device it is characterised in that: include sedimentation furnace, the high-temperature residual heat being sequentially connected along flue gas circulating direction
Boiler and low temperature exhaust heat boiler, the heated wall surface at least partially water-cooling wall of described sedimentation furnace.
2. flue gas processing device according to claim 1 it is characterised in that: also include drum, described drum has into water
Mouth, outlet, air inlet and gas outlet, described outlet is connected with the heat transferring medium entrance of each described water-cooling wall, described air inlet
Mouthful with the heat transferring medium outlet of each described water-cooling wall, described water inlet exported with the heat transferring medium of described low temperature exhaust heat boiler
Connection, described gas outlet is connected with the heat transferring medium entrance of described high-temperature residual heat boiler.
3. flue gas processing device according to claim 1 and 2 it is characterised in that: be provided with described sedimentation furnace adjusting material spray
Drench mechanism.
4. flue gas processing device according to claim 1 and 2 it is characterised in that: described sedimentation furnace, described high-temperature residual heat pot
It is equipped with online ash removal mechanism, described high-temperature residual heat boiler and described low temperature outside the heating surface of stove and described low temperature exhaust heat boiler
Waste heat boiler bottom is all correspondingly provided with ash silo.
5. a kind of rotary hearth furnace high-temperature high dust fume treatment and bootstrap system it is characterised in that: include as claimed in claim 2
Flue gas processing device, the smoke inlet of described sedimentation furnace connected with the exhanst gas outlet of rotary hearth furnace by high-temperature flue gas pipeline；
Described system also includes UTILIZATION OF VESIDUAL HEAT IN subsystem and dedusting subsystem, described UTILIZATION OF VESIDUAL HEAT IN subsystem pass through jet chimney with
The heat transferring medium outlet of described high-temperature residual heat boiler, described dedusting subsystem passes through more than low-temperature flue gas pipeline and described low temperature
The exhanst gas outlet connection of heat boiler.
6. rotary hearth furnace high-temperature high dust fume treatment according to claim 5 and bootstrap system it is characterised in that: described
UTILIZATION OF VESIDUAL HEAT IN subsystem includes steam turbine and electromotor, and the steam inlet of described steam turbine is passed through more than jet chimney and described high temperature
The heat transferring medium outlet of heat boiler, the steam (vapor) outlet of described steam turbine is connected with steam cooling body, described steam cooling
Mechanism is connected with the heat transferring medium entrance of described low temperature exhaust heat boiler by condensing hot air furnace pipeline.
7. rotary hearth furnace high-temperature high dust fume treatment according to claim 6 and bootstrap system it is characterised in that: described
Jet chimney is provided with direct-contact desuperheater.
8. rotary hearth furnace high-temperature high dust fume treatment according to claim 7 and bootstrap system it is characterised in that: described
Condensing hot air furnace line branching is connected with a condensed water spray pipeline, and the described condensed water spray pipeline port of export is subtracted with described water spray
Warm device connects, and is provided with control valve in described condensed water spray pipeline.
9. rotary hearth furnace high-temperature high dust fume treatment according to claim 5 and bootstrap system it is characterised in that: described
Dedusting subsystem includes eddy flow wind-mixer and the sack cleaner being sequentially connected along flue gas circulating direction, and described eddy flow wind-mixer sets
Have by the cooling gas inlet of Valve controlling.
10. rotary hearth furnace high-temperature high dust fume treatment according to claim 5 and bootstrap system it is characterised in that: institute
State high-temperature flue gas pipeline and be provided with inlet valve, be connected with the pipeline between described rotary hearth furnace and described inlet valve and diffuse side
Road, described diffuse bypass and is provided with diffusion valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620733790.9U CN205919305U (en) | 2016-07-12 | 2016-07-12 | High cloud of dust gas disposal of smoke treatment device and rotary hearth furnace high temperature and waste heat utilization system |
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| CN201620733790.9U CN205919305U (en) | 2016-07-12 | 2016-07-12 | High cloud of dust gas disposal of smoke treatment device and rotary hearth furnace high temperature and waste heat utilization system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195968A (en) * | 2016-07-12 | 2016-12-07 | 武汉都市环保工程技术股份有限公司 | Flue gas processing device and rotary hearth furnace high-temperature high dust smoke processing system |
| CN107576208A (en) * | 2017-09-29 | 2018-01-12 | 四川德胜集团钒钛有限公司 | A kind of rotary hearth furnace flue gas system |
-
2016
- 2016-07-12 CN CN201620733790.9U patent/CN205919305U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195968A (en) * | 2016-07-12 | 2016-12-07 | 武汉都市环保工程技术股份有限公司 | Flue gas processing device and rotary hearth furnace high-temperature high dust smoke processing system |
| CN107576208A (en) * | 2017-09-29 | 2018-01-12 | 四川德胜集团钒钛有限公司 | A kind of rotary hearth furnace flue gas system |
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Address after: 430205 No. 59 Liufang Avenue, Donghu High-tech Development Zone, Wuhan City, Hubei Province Co-patentee after: Rizhao Steel Holding Group Co., Ltd. Patentee after: Zhongye Southern Urban Environmental Protection Engineering Technology Co., Ltd. Address before: 430071 Dongsha Building, 122 North Road, Wuchang District, Wuhan City, Hubei Province, 15th Floor Co-patentee before: Rizhao Steel Holding Group Co., Ltd. Patentee before: Wuhan Urban Environment Protection Engineering Techn Co., Ltd. |