CN106195968A - Flue gas processing device and rotary hearth furnace high-temperature high dust smoke processing system - Google Patents
Flue gas processing device and rotary hearth furnace high-temperature high dust smoke processing system Download PDFInfo
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- CN106195968A CN106195968A CN201610548106.4A CN201610548106A CN106195968A CN 106195968 A CN106195968 A CN 106195968A CN 201610548106 A CN201610548106 A CN 201610548106A CN 106195968 A CN106195968 A CN 106195968A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
- F22B33/18—Combinations of steam boilers with other apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J1/00—Removing ash, clinker, or slag from combustion chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2217/00—Intercepting solids
- F23J2217/50—Intercepting solids by cleaning fluids (washers or scrubbers)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2700/00—Ash removal, handling and treatment means; Ash and slag handling in pulverulent fuel furnaces; Ash removal means for incinerators
- F23J2700/001—Ash removal, handling and treatment means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
- F27D2017/006—Systems for reclaiming waste heat using a boiler
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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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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chimneys And Flues (AREA)
Abstract
The present invention relates to a kind of flue gas processing device and be configured with the rotary hearth furnace high-temperature high dust smoke processing system of this processing means, this processing means includes sedimentation furnace, high-temperature residual heat boiler, low temperature exhaust heat boiler and drum, the heated wall surface of sedimentation furnace at least partially water-cooling wall；Drum has water inlet, outlet, air inlet and gas outlet, outlet connects with the heat transferring medium entrance of each water-cooling wall, air inlet and the heat transferring medium outlet of each water-cooling wall, water inlet and the heat transferring medium outlet of low temperature exhaust heat boiler, gas outlet connects with the heat transferring medium entrance of high-temperature residual heat boiler.The present invention, by reducing sedimentation furnace internal heating surface, can be effectively improved utilization rate of waste heat and the effect of flue gas, reduces superheater, the body flue of economizer and follow-up flue simultaneously and occurs the situation of blocking to occur, is effectively improved the corrosion condition that equipment is caused by flue gas.
Description
Technical field
The present invention relates to a kind of flue gas processing device and be configured with the rotary hearth furnace high-temperature high dust flue gas of this flue gas processing device
Processing 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 the most 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 UTILIZATION OF VESIDUAL HEAT IN and the prospect of zinc resource recovery.But, due to rotary hearth furnace flue gas
The characteristic of high-temperature high dust, flue-gas temperature is up to 1000 DEG C～1200 DEG C, and flue gas zinc-containing dust at high temperature viscosity is higher, therefore turns
There are the following problems for the UTILIZATION OF VESIDUAL HEAT IN of end kiln gas and zinc resource recovery:
One, easily there is blockage problem at high-temperature flue and low temperature flue etc. in blocking.Because rotary hearth furnace smoke dust composition and
Characteristic is complicated, changeable, and ash fusion point temperature range is relatively big, at high temperature has caking property, is susceptible to blocking, and the system that affects is run
Stability and the time of operation.
Two, corrosion, 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, containing chlorine in general binding agent, cause in the rotary hearth furnace flue gas of high-temperature high dust
Containing multiple villaumite, in the presence of having water vapour, can form " salt fog ", metal material surface is caused corrosion by salt fog, can reduce
In the service life of the heat exchangers etc. such as water-cooling wall, superheater and economizer, affect system run all right.
Three, the thermal efficiency is low, and rotary hearth furnace flue gas typically uses conventional power plant boiler to carry out heat recovery, heat recovery efficiency
Relatively low.
Summary of the invention
The embodiment of the present invention provides a kind of flue gas processing device and is configured with the rotary hearth furnace high temperature height of this flue gas processing device
Cloud of dust gas processing system, at least can solve the segmental defect of prior art.
The present embodiments relate to a kind of flue gas processing device, including sedimentation furnace, high-temperature residual heat boiler, low temperature exhaust heat boiler
And drum, described sedimentation furnace, described high-temperature residual heat boiler and described low temperature exhaust heat boiler be sequentially connected with along flue gas circulating direction, institute
State the heated wall surface at least partially water-cooling wall of sedimentation furnace；
Described drum has water inlet, outlet, air inlet and gas outlet, and described outlet changes with each described water-cooling wall
Thermal medium entrance connects, and described air inlet and the heat transferring medium outlet of each described water-cooling wall, described water inlet is low with described
The heat transferring medium outlet of temperature waste heat boiler, described gas outlet connects 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, described sedimentation furnace, described high-temperature residual heat boiler and the heating surface of described low temperature exhaust heat boiler
Outside is equipped with online ash removal mechanism, described high-temperature residual heat boiler and described low temperature exhaust heat boiler bottom and is 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 relates to a kind of rotary hearth furnace high-temperature high dust smoke processing system, fills including fume treatment as above
Putting, 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 also includes
UTILIZATION OF VESIDUAL HEAT IN subsystem and dedusting subsystem, described UTILIZATION OF VESIDUAL HEAT IN subsystem is by jet chimney and described high-temperature residual heat boiler
Heat transferring medium outlet, described dedusting subsystem is connected by the exhanst gas outlet of low-temperature flue gas pipeline with described low temperature exhaust heat boiler
Logical.
As one of embodiment, described UTILIZATION OF VESIDUAL HEAT IN subsystem includes steam turbine and electromotor, the steam of described steam turbine
Entrance is connected by the heat transferring medium outlet of jet chimney with described high-temperature residual heat boiler, the steam (vapor) outlet of described steam turbine
Having steam cooling body, described steam cooling body is by the heat transferring medium of condensing hot air furnace pipeline with 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 connects 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 that is sequentially connected with 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 connect and diffuse bypass, described in diffuse bypass and be provided with diffusion valve.
The embodiment of the present invention at least achieves following beneficial effect: by transforming conventional boiler of power plant, incited somebody to action
Hot device and economizer all move and are placed in outside sedimentation furnace, reduce sedimentation furnace internal heating surface, on the one hand, can rationally reduce the temperature of high-temperature flue gas
Degree, flue gas flow rate is effectively controlled in sedimentation furnace simultaneously, makes the settling amount of dust in flue gas significantly increase, can avoid height
The flue gas of dirt warm, high is directly entered superheater and economizer, can reduce superheater, the body flue of economizer and follow-up flue and send out
The situation of raw blocking occurs；On the other hand, by controlling temperature and the flow velocity of flue gas, in conjunction with the adjusting material spray arranged in sedimentation furnace
Drench mechanism and flue gas is carried out modifier treatment, the corrosion condition that equipment is caused by flue gas can be effectively improved；It addition, by sedimentation furnace
Heating surface, sedimentation furnace external superheat device and the preferred arrangement of economizer surface, can be effectively improved the utilization rate of waste heat of flue gas and remaining
Thermal utilization effect.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
The structural representation of the rotary hearth furnace high-temperature high dust smoke processing system that Fig. 1 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, those of ordinary skill in the art obtained on the premise of not making creative work all its
Its embodiment, broadly falls into the scope of protection of the invention.
Embodiment one
Such as Fig. 1, the embodiment of the present invention provides a kind of flue gas processing device 2, can be used for processing the various cigarettes that steel plant produce
Gas, is particularly suited for processing the high-temperature high dust flue gas that rotary hearth furnace 1 produces.This device include sedimentation furnace 22, high-temperature residual heat boiler 23,
Low temperature exhaust heat boiler 24 and drum 21, described sedimentation furnace 22, described high-temperature residual heat boiler 23 and described low temperature exhaust heat boiler 24 edge
Flue gas circulating direction is sequentially connected with, and the smoke inlet of sedimentation furnace 22 is as the smoke inlet of this flue gas processing device 2, low temperature exhaust heat
The exhanst gas outlet of boiler 24 is as the exhanst gas outlet of this flue gas processing device 2.Sedimentation furnace 22 is preferably in underpants shape, and its flue gas enters
Mouth is positioned at the bottom of one trouser legs, and the heated wall surface of sedimentation furnace 22 at least partially water-cooling wall, wherein, below sedimentation furnace 22 roof
Heating surface everywhere both preferably use water-cooling wall, the visual actual condition of this roof is used with or without water-cooling wall；Each water-cooling wall
Water inlet be respectively positioned on bottom it, outlet is positioned at its top.Such as Fig. 1, high-temperature residual heat boiler 23 is preferably next-door neighbour's sedimentation furnace 22
Arrange, i.e. the smoke inlet of high-temperature residual heat boiler 23 directly docks with the exhanst gas outlet of sedimentation furnace 22, exists shortening high-temperature flue gas
Movement travel in flue, it is to avoid cause line clogging.
Described drum 21 has water inlet, outlet, air inlet and gas outlet, described outlet and each described water-cooling wall
Heat transferring medium entrance connects, and described air inlet and the heat transferring medium outlet of each described water-cooling wall, described water inlet is with described
The heat transferring medium entrance of the heat transferring medium outlet of low temperature exhaust heat boiler 24, described gas outlet and described high-temperature residual heat boiler 23
Connection.Water in drum 21 enters in the water-cooling wall in sedimentation furnace 22, carries out heat exchange with the high-temperature flue gas entered in sedimentation furnace 22
And it being heated to be steam water interface, steam water interface enters in drum 21；Steam in drum 21 enters high-temperature residual heat boiler
In 23, carrying out heat exchange with the high-temperature flue gas entered in high-temperature residual heat boiler 23 and be heated to be superheated steam, superheated steam can be used
UTILIZATION OF VESIDUAL HEAT IN is carried out in generating etc.；Low temperature exhaust heat boiler 24 receives cooling water, and carries out heat exchange with entering its interior low-temperature flue gas,
Will cool down water heat temperature raising, it is interior with the water body in supplementary drum 21 that the cooling water of heat temperature raising enters drum 21.Preferably, warp
Cooling down, after the superheated steam UTILIZATION OF VESIDUAL HEAT IN that high-temperature residual heat boiler 23 heating obtains, the condensed water obtained can be as low temperature exhaust heat boiler
The cooling water of 24, thus realize cooling down recycling of water, the effectively save energy.
In above-mentioned sedimentation furnace 22, it is further provided with adjusting material spraying mechanism, is used for spraying adjusting material, to remove flue gas
In the pollutant of the flue dust such as NOx, Cl, S of containing, reduce the degree of corrosion that equipment is caused by flue gas.
In said structure, in sedimentation furnace 22, it is provided with water-cooling wall, i.e. forms a vaporizer, be provided with in high-temperature residual heat boiler 23 and change
Hot device, i.e. forms a superheater, is provided with heat exchanger in low temperature exhaust heat boiler 24, i.e. form an economizer.Through sedimentation furnace 22, high temperature
Waste heat boiler 23 and low temperature exhaust heat boiler 24 process successively, and the exhaust gas temperature of low temperature exhaust heat boiler 24 is at 140 DEG C～170 DEG C.This
Superheater and economizer, by transforming conventional boiler of power plant, are all moved and are placed in outside sedimentation furnace 22 by embodiment, 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 makes the settling amount of dust in flue gas significantly increase, 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, carry out modifier treatment in conjunction with the adjusting material spraying mechanism arranged in sedimentation furnace 22 to flue gas, can have
Effect improves the corrosion condition that equipment is caused by flue gas；It 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 be effectively improved 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 layout；Above-mentioned high-temperature residual heat boiler 23 preferably uses pressure horizontal, single, Natural Circulation HRSG；Sedimentation furnace 22,
High-temperature residual heat boiler 23, the fume side of low temperature exhaust heat boiler 24 all use wear-resisting, anti-corrosion material, water-cooling wall and high-temperature residual heat boiler
The heating surface of 23 is both preferably employing metal alloy compositions and surface spraying is wear-resisting and anticorrosive coat, low temperature exhaust heat boiler 24 heating surface
Preferably use 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 generally pressure-bearing type, can be disposed at sedimentation furnace 22 furnace roof.At 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, is provided with backplate；The design of heat-insulation layer should ensure that at this flue gas processing device 2 properly functioning
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
Online ash removal mechanism, described high-temperature residual heat boiler 23 and described low temperature exhaust heat boiler it is equipped with outside the heating surface of waste heat boiler 24
Ash silo all it is correspondingly provided with bottom 24.Online ash removal mechanism uses 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.At sedimentation furnace 22, high-temperature residual heat
All be disposed with maintenance door, manhole and detection hole etc. on boiler 23 and low temperature exhaust heat boiler 24, meet run, wanting of overhauling and test
Asking, manhole also can use as deashing passage.
Embodiment two
Such as Fig. 1, the present embodiment relates to a kind of rotary hearth furnace high-temperature high dust smoke processing system, is configured with above-described embodiment one institute
The flue gas processing device 2 provided, the smoke inlet of described sedimentation furnace 22 is by the exhanst gas outlet of high-temperature flue gas pipeline with rotary hearth furnace 1
Connection.Described system also includes UTILIZATION OF VESIDUAL HEAT IN subsystem 3, and described UTILIZATION OF VESIDUAL HEAT IN subsystem 3 is by jet chimney and described high temperature
The heat transferring medium outlet of waste heat boiler 23.
Usually, above-mentioned UTILIZATION OF VESIDUAL HEAT IN subsystem 3 is mainly used in generating, and the most above-mentioned UTILIZATION OF VESIDUAL HEAT IN subsystem 3 is generating system
System, this UTILIZATION OF VESIDUAL HEAT IN subsystem 3 includes steam turbine 35, and this steam turbine 35 connects electromotor 36, the steam of described steam turbine 35
Entrance is by the heat transferring medium outlet of jet chimney with described high-temperature residual heat boiler 23.
Further, such as Fig. 1, the steam (vapor) outlet of described steam turbine 35 connects steam cooling body, and described steam cools down
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
Now cool down recycling of 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 is imported and exported the recirculated water with cooling tower 38 and is imported and exported pipeline communication, 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, to utilize in being back to 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, by bleeder heater 34, condensed water is heated to uniform temperature, to improve boiler feed temperature, thus improves
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, and the superheated steam character causing generation is unstable, and affects the properly functioning of electricity generation system, above-mentioned by arranging
Direct-contact desuperheater 31, can by the temperature stabilization of superheated steam one suitably in the range of, it is to avoid the change of rotary hearth furnace 1 smoke property is made
Become system fluctuation of service and affect equipment life.It is further preferred that described condensing hot air furnace line branching connects 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 needs 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 connect on the pipeline between inlet valve 6 and diffuse bypass 5, described in diffuse bypass and 5 be provided with diffusion valve 51.This diffuses bypass 5
Mainly including exhaust stack, this exhaust stack is connected on high-temperature flue gas pipeline, and diffusion valve 51 is i.e. located on this exhaust stack.By arranging
Diffusing 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
Such as Fig. 1, the present embodiment relates to a kind of rotary hearth furnace high-temperature high dust smoke processing system, is configured with above-described embodiment one institute
The flue gas processing device 2 provided, the smoke inlet of described sedimentation furnace 22 is by the exhanst gas outlet of high-temperature flue gas pipeline with rotary hearth furnace 1
Connection.Described system also includes dedusting subsystem 4, and described dedusting subsystem 4 is by low-temperature flue gas pipeline and described low temperature exhaust heat
The exhanst gas outlet connection of boiler 24.
As one of embodiment, described dedusting subsystem 4 includes the eddy flow wind-mixer being sequentially connected with 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
The effect of 41 is: when there is the working condition that sack cleaner 42 filter bag can not bear, and is entered by above-mentioned control cooling gas
The unlatching of the valve of mouth, introduces cooling gas (such as outdoor air) and mixes 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 changes entrance sack cleaner 42 by flue gas chilling
Flue gas in the states of matter of dust, it is ensured that sack cleaner 42 is not stuck with paste bag, is not corroded.Sack cleaner 42 outlet connects air-introduced machine
43, through air-introduced machine 43, the purification gas after dedusting is 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
Formula cleaner unit body includes the upper box (air-purifying chamber) being sequentially arranged from top to bottom, middle casing (dust and gas room), lower box, additionally also
Include blowing device, defecator (filter bag, filter bag frame) and ash-discharging device etc., wherein, in upper box, be provided with above-mentioned winding-up
Device, middle casing be provided with ash-laden gas import and export airduct, flow distributor, filter bag hanging in middle cabinet space, ash bucket
The bottom of sack cleaner body it is arranged on, for collecting the dust fallen from filter bag supernatant as lower box.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 causes filtration resistance to be continuously increased, and when reaching certain higher limit, needs 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 ash conveying device is collected.
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 connect on the pipeline between inlet valve 6 and diffuse bypass 5, described in diffuse bypass and 5 be provided with diffusion valve 51.This diffuses bypass 5
Mainly including exhaust stack, this exhaust stack is connected on high-temperature flue gas pipeline, and diffusion valve 51 is i.e. located on this exhaust stack.By arranging
Diffusing 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.
Embodiment four
Such as Fig. 1, the present embodiment relates to a kind of rotary hearth furnace high-temperature high dust smoke processing system, and it combines above-described embodiment two He
The structure of embodiment three, in the flue gas processing device 2 that i.e. above-described embodiment one is provided, the smoke inlet of sedimentation furnace 22 is by height
Temperature flue connects with the exhanst gas outlet of rotary hearth furnace 1, and the exhanst gas outlet of low temperature exhaust heat boiler 24 is by low-temperature flue gas pipeline even
Being connected to above-mentioned dedusting subsystem 4, the heat transferring medium outlet of high-temperature residual heat boiler 23 is connected by jet chimney above-mentioned waste heat profit
With subsystem 3.
The specific works process of above-mentioned smoke processing system is as follows:
(1) open inlet valve 6, close diffusion valve 51, enter from the high-temperature high dust flue gases of about 1100 DEG C of rotary hearth furnace 1
Sedimentation furnace 22, makes the preliminary sedimentation in sedimentation furnace 22 of the flue dust in flue gas, and meanwhile, high-temperature flue gas enters with the water-cooling wall of sedimentation furnace 22
Row heat exchange, is heated to be steam water interface by the water in water-cooling wall, the air inlet being arranged on drum 21 middle and upper part enter drum 21；
(2), in sedimentation furnace 22 after preliminary sedimentation, high-temperature flue gas enters 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 condensation water, condenses water by condensing
Device 37 is sent to bleeder heater 34 through condensate pump, enters oxygen-eliminating device 33, in oxygen-eliminating device 33 after deoxygenation after heat exchange
Water is sent to the heat exchanger of low temperature exhaust heat boiler 24 through feed pump；
(4) low temperature exhaust heat boiler 24 is entered from high-temperature residual heat boiler 23 flue gas out 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
The temperature control being arranged on the monitoring point within eddy flow wind-mixer 41 is fed back, and adjusts mixed air quantity, makes flue-gas temperature drop to design load, to rise
Purpose to protection filter bag of dust collector；
(6) enter sack cleaner 42 from eddy flow wind-mixer 41 flue gas out by flue, carry out dedusting；
(7) enter chimney 44 through air-introduced machine 43 by flue from sack cleaner 42 flue gas out, export from chimney 44
Enter air.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (10)
1. a flue gas processing device, it is characterised in that: include sedimentation furnace, high-temperature residual heat boiler, low temperature exhaust heat boiler and drum,
Described sedimentation furnace, described high-temperature residual heat boiler and described low temperature exhaust heat boiler are sequentially connected with along flue gas circulating direction, described sedimentation
The heated wall surface of stove at least partially water-cooling wall；
Described drum has water inlet, outlet, air inlet and gas outlet, and described outlet is situated between with the heat exchange of each described water-cooling wall
More than the connection of matter entrance, described air inlet and the heat transferring medium outlet of each described water-cooling wall, described water inlet and described low temperature
The heat transferring medium outlet of heat boiler, described gas outlet connects with the heat transferring medium entrance of described high-temperature residual heat boiler.
Flue gas processing device the most according to claim 1, it is characterised in that: it is provided with adjusting material spray thrower in described sedimentation furnace
Structure.
Flue gas processing device the most according to claim 1, it is characterised in that: described sedimentation furnace, described high-temperature residual heat boiler
And it is equipped with online ash removal mechanism, more than described high-temperature residual heat boiler and described low temperature outside the heating surface of described low temperature exhaust heat boiler
Ash silo all it is correspondingly provided with bottom heat boiler.
Flue gas processing device the most according to claim 3, it is characterised in that: described online ash removal mechanism includes mechanical vibrator
Unit and elastic rapping unit.
5. a rotary hearth furnace high-temperature high dust smoke processing system, it is characterised in that: include institute as any one of Claims 1-4
The flue gas processing device stated, 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 also includes UTILIZATION OF VESIDUAL HEAT IN subsystem and dedusting subsystem, described UTILIZATION OF VESIDUAL HEAT IN subsystem by 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.
Rotary hearth furnace high-temperature high dust smoke processing system the most according to claim 5, it is characterised in that: described UTILIZATION OF VESIDUAL HEAT IN
System includes steam turbine and electromotor, and the steam inlet of described steam turbine is changed by jet chimney and described high-temperature residual heat boiler
Thermal medium outlet connects, and the steam (vapor) outlet of described steam turbine connects steam cooling body, and described steam cooling body is by cold
Solidifying water recovery culvert connects with the heat transferring medium entrance of described low temperature exhaust heat boiler.
Rotary hearth furnace high-temperature high dust smoke processing system the most according to claim 6, it is characterised in that: on described jet chimney
It is provided with direct-contact desuperheater.
Rotary hearth furnace high-temperature high dust smoke processing system the most according to claim 7, it is characterised in that: described condensing hot air furnace
Line branching connects has a condensed water spray pipeline, the described condensed water spray pipeline port of export to be connected with described direct-contact desuperheater,
And it is provided with control valve in described condensed water spray pipeline.
Rotary hearth furnace high-temperature high dust smoke processing system the most according to claim 5, it is characterised in that: described dedusting subsystem
Including the eddy flow wind-mixer being sequentially connected with along flue gas circulating direction and sack cleaner, described eddy flow wind-mixer is provided with by valve control
The cooling gas inlet of system.
Rotary hearth furnace high-temperature high dust smoke processing system the most according to claim 5, it is characterised in that: described high-temperature flue gas
Pipeline is provided with inlet valve, the pipeline between described rotary hearth furnace with described inlet valve is connected and diffuses bypass, described in diffuse
Bypass is provided with diffusion valve.
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| CN201610548106.4A CN106195968A (en) | 2016-07-12 | 2016-07-12 | Flue gas processing device and rotary hearth furnace high-temperature high dust smoke processing system |
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| CN201610548106.4A CN106195968A (en) | 2016-07-12 | 2016-07-12 | Flue gas processing device and rotary hearth furnace high-temperature high dust smoke processing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107325847A (en) * | 2017-08-04 | 2017-11-07 | 浙江大学 | A kind of cooling of gas of high temperature pyrolysis and gasification containing tar and exhaust heat recovering method and device |
| CN110579114A (en) * | 2019-10-08 | 2019-12-17 | 江苏欧姆圣智能装备股份有限公司 | Waste heat recovery steam generator of steel wire heat treatment furnace |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202361822U (en) * | 2011-12-19 | 2012-08-01 | 武汉都市环保工程技术股份有限公司 | Flue gas treatment and waste heat generation system with rotary hearth furnace |
| CN202371688U (en) * | 2011-12-19 | 2012-08-08 | 武汉都市环保工程技术股份有限公司 | Flue gas waste heat recovery boiler of rotary hearth furnace |
| CN102937380A (en) * | 2012-11-26 | 2013-02-20 | 重庆赛迪工业炉有限公司 | Flue gas treatment method and system for RHF (rotary hearth furnace) |
| CN103471408A (en) * | 2013-09-06 | 2013-12-25 | 鞍钢股份有限公司 | Heating furnace high-temperature flue gas waste heat utilization system and method |
| CN203489720U (en) * | 2013-09-03 | 2014-03-19 | 常州大学 | Zinc powder containing dust recovery and residual heat generation system of rotary hearth furnace |
| CN205919305U (en) * | 2016-07-12 | 2017-02-01 | 武汉都市环保工程技术股份有限公司 | High cloud of dust gas disposal of smoke treatment device and rotary hearth furnace high temperature and waste heat utilization system |
-
2016
- 2016-07-12 CN CN201610548106.4A patent/CN106195968A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202361822U (en) * | 2011-12-19 | 2012-08-01 | 武汉都市环保工程技术股份有限公司 | Flue gas treatment and waste heat generation system with rotary hearth furnace |
| CN202371688U (en) * | 2011-12-19 | 2012-08-08 | 武汉都市环保工程技术股份有限公司 | Flue gas waste heat recovery boiler of rotary hearth furnace |
| CN102937380A (en) * | 2012-11-26 | 2013-02-20 | 重庆赛迪工业炉有限公司 | Flue gas treatment method and system for RHF (rotary hearth furnace) |
| CN203489720U (en) * | 2013-09-03 | 2014-03-19 | 常州大学 | Zinc powder containing dust recovery and residual heat generation system of rotary hearth furnace |
| CN103471408A (en) * | 2013-09-06 | 2013-12-25 | 鞍钢股份有限公司 | Heating furnace high-temperature flue gas waste heat utilization system and method |
| CN205919305U (en) * | 2016-07-12 | 2017-02-01 | 武汉都市环保工程技术股份有限公司 | High cloud of dust gas disposal of smoke treatment device and rotary hearth furnace high temperature and waste heat utilization system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107325847A (en) * | 2017-08-04 | 2017-11-07 | 浙江大学 | A kind of cooling of gas of high temperature pyrolysis and gasification containing tar and exhaust heat recovering method and device |
| CN110579114A (en) * | 2019-10-08 | 2019-12-17 | 江苏欧姆圣智能装备股份有限公司 | Waste heat recovery steam generator of steel wire heat treatment furnace |
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Address after: 430205 No. 59 Liufang Avenue, Donghu High-tech Development Zone, Wuhan City, Hubei Province Applicant after: Zhongye Southern Urban Environmental Protection Engineering Technology Co., Ltd. Applicant after: Rizhao Steel Holding Group Co., Ltd. Address before: 430071 Dongsha Building, 122 North Road, Wuchang District, Wuhan City, Hubei Province, 15th Floor Applicant before: Wuhan Urban Environment Protection Engineering Techn Co., Ltd. Applicant before: Rizhao Steel Holding Group Co., Ltd. |
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Application publication date: 20161207 |