CN106225491B - Sinter cooler smoke waste heat utilization system and sinter cooler - Google Patents
Sinter cooler smoke waste heat utilization system and sinter cooler Download PDFInfo
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- CN106225491B CN106225491B CN201610571101.3A CN201610571101A CN106225491B CN 106225491 B CN106225491 B CN 106225491B CN 201610571101 A CN201610571101 A CN 201610571101A CN 106225491 B CN106225491 B CN 106225491B
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- flue gas
- medium temperature
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- waste heat
- temperature
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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
- 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
-
- 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
Abstract
Sinter cooler smoke waste heat utilization system and sinter cooler.The present invention provides a kind of sintering device flue gas afterheat utilizing system and configured with the sinter cooler of the system, wherein, sinter cooler includes High-temperature cooling section, medium temperature cooling section and sub-cooled section, medium temperature cooling section includes that medium temperature cools down one area~medium temperature cooling four, 4th area cooling zone, sub-cooled section includes 2nd area of one area of sub-cooled and sub-cooled, and blower cover is respectively equipped with above each cooling zone.The blower cover of High-temperature cooling section is connected to by the first flue gas pipeline with the high temperature section entrance of waste heat boiler, and the blower cover of medium temperature cooling section is connected to by the second flue gas pipeline with the low-temperature zone entrance of waste heat boiler, and the second flue gas pipeline top set is connected with third flue gas pipeline；The third flue gas pipeline is connect with low temperature heat mechanism.The cascade utilization of sinter cooler gas energy can be achieved in the present invention, can adjust the medium temperature cooling section flue gas entered in waste heat boiler by the third flue gas pipeline, ensures that the heat into waste heat boiler is stablized relatively.
Description
Technical field
The invention belongs to sintering technology fields, and in particular to a kind of sinter cooler smoke waste heat utilization system and be configured with
The sinter cooler of the smoke waste heat utilization system.
Background technology
The waste heat recovery of sinter cooler at present is mainly the fume afterheat recycled higher than 200 DEG C or more, for generating steaming
Vapour generates electricity；Since the flue-gas temperature of sinter cooler high temperature section only has 300-400 DEG C, the steam that cogeneration unit generates
Quality is low, causes generating efficiency not high.And the flue gas less than 200 DEG C is such as carried out without utilization or direct recuperation of heat
Hot gas sintering, as ignitor for sintering combustion air etc., therefore, sinter cooler low temperature section fume afterheat does not obtain sufficient profit yet
With so that sinter cooler fume afterheat utilization rate is relatively low.
Meanwhile sinter cooler afterheat generating system, due to being influenced by sintering operating status, cogeneration unit is steady
Qualitative difference, annual utilization hours are short, about 5000 hours.The main original of sinter cooler afterheat generating system fluctuation of service
Cause：First, sinter granularity changes with variations such as the granularities of sintering mixed carbon comtent, pelletization moisture, sintering miberal powder, cause
Cooler cooling air quantity changes, and afterheat utilizing system input energy fluctuates；Second is that into the sinter temperature of sinter cooler
Degree is influenced by sintering operating status, when the excessive underburnt of sintering process or burning, leads to the sinter into cooler
Temperature is relatively low；Third, sintering machine for some reason shut down frequent occurrence by the short time in sintering actual moving process, cause to be sintered
The input of cooler heat is interrupted, and generating set is by forced-stopping machine.
Invention content
The embodiment of the present invention provides a kind of sinter cooler smoke waste heat utilization system and is utilized configured with the fume afterheat
The sinter cooler of system can at least solve the segmental defect of the prior art.
The embodiment of the present invention provides a kind of sinter cooler smoke waste heat utilization system, and the sinter cooler includes height
Warm cooling section, medium temperature cooling section and sub-cooled section, the system comprises：
The first flue gas pipeline being connected on the blower cover of the High-temperature cooling section, first flue gas pipeline and waste heat pot
The high temperature section entrance of stove is connected to；
The second flue gas pipeline being connected on the blower cover of the medium temperature cooling section, second flue gas pipeline with it is described remaining
The low-temperature zone entrance of heat boiler is connected to, and second flue gas pipeline top set is connected with third flue gas pipeline, second flue gas
It is equipped with control valve on pipeline and the third flue gas pipeline；
The third flue gas pipeline is connect with low temperature heat mechanism.
As one of embodiment, second flue gas pipeline includes two first smoke inlet pipelines, two first cigarettes
The arrival end of gas inlet duct is along the blower cover that stream direction is sequentially connected to the medium temperature cooling section, two first flue gases
Inlet duct Shang Jun branches are connected with one second smoke inlet pipelines, and two second smoke inlet pipelines constitute the third cigarette
The inlet duct of air pipe is equipped with control valve in each smoke inlet pipelines.
As one of embodiment, the medium temperature cooling section include along medium temperature that stream direction is sequentially arranged cool down an area, in
Cooling 2nd area of temperature and medium temperature cool down 3rd area, and blower cover is correspondingly provided with above each cooling zone；Two first smoke inlet pipelines point
The medium temperature is not correspondingly connected to cool down on the blower cover in 3rd area of 2nd area and medium temperature cooling.
As one of embodiment, the medium temperature, which cools down, to be connected with the first flue gas and backflows pipeline on the blower cover in an area, described
First flue gas tube outlet end of backflowing is connected on the cooling wind organization of supply of the High-temperature cooling section.
As one of embodiment, the low temperature heat mechanism includes card Linne circulation mechanism.
As one of embodiment, the card Linne circulation mechanism includes superheater, the third flue gas pipeline and the mistake
The heat source medium entrance of hot device is connected to.
As one of embodiment, the medium temperature cooling section further includes that medium temperature cools down 4th area, cold along medium temperature described in stream direction
But 4th area are located at after 3rd area of medium temperature cooling, and the 4th flue gas pipeline is connected on the blower cover in 4th area of the medium temperature cooling；
The superheater includes the low-temperature heat exchange section and high-temperature heat transfer section set gradually along working medium circulating direction, and the low-temperature heat exchange section is set
Have smoke inlet and be connected to the 4th flue gas pipeline, the high-temperature heat transfer section be equipped with smoke inlet and with the third flue gas
Pipeline connection.
As one of embodiment, the card Linne circulation mechanism further includes heater, and the heat source medium of the superheater goes out
Mouth is connected to the heat source medium entrance of the heater.
As one of embodiment, the heat source medium outlet of the heater passes through the first exhanst gas outlet pipeline and the low temperature
The cooling wind organization of supply of cooling section connects.
As one of embodiment, the sub-cooled section includes one area of sub-cooled being sequentially arranged along stream direction and low
Cooling 2nd area of temperature, each cooling zone top are correspondingly provided with blower cover；The first exhanst gas outlet pipeline and one area of the sub-cooled
Cooling wind organization of supply connection.
As one of embodiment, the first exhanst gas outlet pipeline top set is connected with the second exhanst gas outlet pipeline, described
Second exhanst gas outlet pipeline cools down the cooling wind in 2nd area of cooling wind organization of supply and medium temperature cooling in an area with the medium temperature
Organization of supply connects, and the second exhanst gas outlet pipeline is equipped with control valve.
As one of embodiment, it is connected with the second flue gas on the blower cover in one area of the sub-cooled and backflows pipeline, it is described
Second flue gas tube outlet end of backflowing is connected on the cooling wind organization of supply of the medium temperature cooling section.
As one of embodiment, two area bottom of the sub-cooled is connected with the air blower for blasting air, described low
The 5th flue gas pipeline, the hot-wind inlet company of the 5th flue gas pipeline and sintering machine are connected on the blower cover in cooling 2nd area of temperature
It is logical.
As one of embodiment, the card Linne circulation mechanism includes steam turbine and stand-by motor, the stand-by motor, institute
The drive shaft of the rotor main shaft and main exhauster of sintering of stating steam turbine sequentially coaxially connects.
As one of embodiment, the exhanst gas outlet of the waste heat boiler is cold by third exhanst gas outlet pipeline and the medium temperature
But the cooling wind organization of supply connection of section.
As one of embodiment, the third exhanst gas outlet pipeline top set is connected with the 4th exhanst gas outlet pipeline, described
4th exhanst gas outlet pipeline is connect with the cooling wind organization of supply of the High-temperature cooling section, is set on the 4th exhanst gas outlet pipeline
There is control valve.
As one of embodiment, the waste heat boiler is connected with the afterburning flue gas pipeline for supplying afterburning flue gas.
The present embodiments relate to a kind of sinter cooler, including cooler ontology, the cooler ontology includes height
Warm cooling section, medium temperature cooling section and sub-cooled section；Wherein, the medium temperature cooling section includes in stream direction is sequentially arranged
The cooling area of temperature, medium temperature cool down 2nd area, medium temperature cools down 3rd area and medium temperature cools down 4th area, and air inducing is respectively equipped with above each cooling zone
Cover；The sub-cooled section includes 2nd area of one area of sub-cooled and sub-cooled being sequentially arranged along stream direction, each cooling zone
Top is respectively equipped with blower cover；The cooler ontology is connected with sinter cooler smoke waste heat utilization system as described above.
As one of embodiment, the cooler ontology further includes feed stage, and the feed stage is equipped with to prestore for accepting
The buffering of sintering feed prestores mechanism.
The embodiment of the present invention at least has the advantages that：
(1) by the way that the flue gas of High-temperature cooling section to be sent into the high temperature section of waste heat boiler, more than the flue gas of medium temperature cooling section is sent into
The low-temperature zone of heat boiler realizes the cascade utilization of sinter cooler gas energy, utilization ratio higher, more reasonable.Due to
Two flue gas pipeline top sets are connected with third flue gas pipeline, in the medium temperature cooling section flue gas which extracts, at least
Part can be split to third flue gas pipeline, you can it is cold that the medium temperature entered in waste heat boiler is adjusted by the third flue gas pipeline
But section flue gas ensures that the heat into waste heat boiler is stablized relatively.
(2) medium temperature is cooled down to the flue gas in an area be used as cooling wind by the first flue gas pipeline that backflows supplied to High-temperature cooling
Section, by the second flue gas backflow pipeline by the flue gas in one area of sub-cooled be used as cooling wind be supplied to medium temperature cooling section, one side
Realize that the medium temperature cools down recycling for the flue gas in an area and one area of sub-cooled, reduce to a certain extent in High-temperature cooling section and
Cooling gas consumption in medium temperature cooling section, it is energy saving；On the other hand, the temperature of the flue gas of the part, Er Qieneng can be improved
The temperature for improving the flue gas by High-temperature cooling section and the extraction of medium temperature cooling section to a certain extent, effectively improves fume afterheat using effect
Rate.
(3) it uses card Linne circulation mechanism that can effectively recycle the waste heat of medium temperature cooling section flue gas, realizes sinter cooler cigarette
The cascade utilization of gas waste heat improves the fume afterheat utilization ratio of sinter cooler.
(4) superheater of the card Linne circulation mechanism is sent by the way that medium temperature to be cooled down to the flue gas in 3rd area of 2nd area and medium temperature cooling
High temperature section, by medium temperature cool down 4th area flue gas be sent into the card Linne circulation mechanism superheater low-temperature zone, realize sintering it is cold
But the cascade utilization of the gas energy of machine medium temperature cooling section, it is utilization ratio higher, more reasonable.
(5) by the way that afterburning flue gas pipeline is arranged, cause defeated when serious burning or serious underburnt occur in sintering process
When entering the heat wretched insufficiency of sinter cooler, afterburning flue gas is suitably supplemented by the afterburning flue gas pipeline, to maintain waste heat pot
The stable operation of stove.
(6) embodiment of the present invention obtains flue gas of different nature by the classifying rationally to sinter cooler cooled region,
Carry out respective application for flue gas of different nature makes sintering to reach best sinter cooler fume afterheat utilizing status
Cooler fume afterheat utilization ratio maximizes；Meanwhile comprehensive regulation is carried out to the flue gas flow direction of different cooled regions, ensure cigarette
The normal table of gas afterheat utilizing system is run, and can realize sinter cooler zero waste gas emission.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structural schematic diagram of sinter cooler smoke waste heat utilization system provided in an embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
Embodiment one
Such as Fig. 1, the embodiment of the present invention provides a kind of sinter cooler smoke waste heat utilization system, the sinter cooler packet
High-temperature cooling section 91, medium temperature cooling section 92 and sub-cooled section 93, High-temperature cooling section 91, medium temperature cooling section 92 and low temperature cold are included
But section 93 is set gradually along stream direction.Above-mentioned sinter cooler smoke waste heat utilization system includes：(1) it is connected to the high temperature
The first flue gas pipeline 3 on the blower cover of cooling section 91, first flue gas pipeline 3 and the high temperature section entrance of waste heat boiler 1 connect
It is logical；And (2) are connected to the second flue gas pipeline 4 on the blower cover of the medium temperature cooling section 92, second flue gas pipeline 4 and institute
The low-temperature zone entrance connection of waste heat boiler 1 is stated, 4 top set of the second flue gas pipeline is connected with third flue gas pipeline 6, and described the
It is equipped with control valve on two flue gas pipelines 4 and the third flue gas pipeline 6.In the present embodiment, above-mentioned waste heat boiler 1 is using existing
Common waste heat boiler 1, usually comprising the superheater that is sequentially arranged along flue gas circulating direction, at least one set of evaporator and
At least one set of economizer can add reheater as needed；Wherein, the division of 1 high temperature section of waste heat boiler and low-temperature zone is according to it
The actual conditions such as topology layout and smoke property determine that usually, the high temperature section of waste heat boiler 1 includes at least superheater, may be used also
Include the one of which positioned at front end or multigroup evaporator, high temperature section entrance is located at before superheater, and low-temperature zone includes at least each
Economizer may also include the one of which positioned at rear end or multigroup evaporator.More than the flue gas of High-temperature cooling section 91 is sent into
The high temperature section of heat boiler 1, the flue gas of medium temperature cooling section 92 are sent into the low-temperature zone of waste heat boiler 1, realize sinter cooler flue gas energy
The cascade utilization of amount, it is utilization ratio higher, more reasonable.
By above structure, due to the second flue gas pipeline, 4 top set is connected with third flue gas pipeline 6, second fume pipe
In 92 flue gas of medium temperature cooling section that road 4 is extracted, it can at least partly be split to third flue gas pipeline 6, you can pass through the third
Flue gas pipeline 6 adjusts the medium temperature cooling section flue gas entered in waste heat boiler 1, ensures that the heat into waste heat boiler 1 is stablized relatively.
When sinter granularity is relatively thick or bed depth is partially thin, the blower cover air quantity of High-temperature cooling section 91 is bigger than normal, leads to medium temperature cooling section
92 blower cover exit gas temperature is relatively low, influences the utilization rate of waste heat of waste heat boiler 1, at this point, can reduce the second fume pipe
The aperture of the aperture of control valve on road 4, the control valve on increase third flue gas pipeline 6 so that the input heat of waste heat boiler 1
It keeps relative stability, utilization rate of waste heat maintains certain level；When sinter granularity is relatively thin or bed depth is partially thick, high temperature
The blower cover air quantity of cooling section 91 is less than normal, and the heat for inputting waste heat boiler 1 is relatively low, and rated load is not achieved in boiler, at this point, can increase
The aperture of the aperture of control valve on big second flue gas pipeline 4, the control valve on reduction third flue gas pipeline 6, ensures more than input
The heat of heat boiler 1 makes waste heat boiler 1 reach rated generation power.
Further, such as Fig. 1, second flue gas pipeline 4 includes two first smoke inlet pipelines, two first cigarettes
The arrival end of gas inlet duct is along the blower cover that stream direction is sequentially connected to the medium temperature cooling section 92, two first cigarettes
Gas inlet duct Shang Jun branches are connected with one second smoke inlet pipelines, and two second smoke inlet pipelines constitute the third
The inlet duct of flue gas pipeline 6 is equipped with control valve in each smoke inlet pipelines.That is the second flue gas pipeline 4 and third fume pipe
Road 6 all has two smoke inlet pipelines, two kinds of relatively one high and one low medium temperature cooling section flue gases of inlet temperature so that above-mentioned remaining
The heat regulation precision and regulating effect of heat boiler 1 are more preferably.It is defined as follows：Two first flue gases being sequentially arranged along stream direction
Control valve on inlet duct corresponds to the first control valve 41 and the second control valve 42, the control in two second smoke inlet pipelines
Valve processed corresponds to third control valve 61 and the 4th control valve 62；Specifically, when sinter granularity is relatively thick or bed depth is partially thin,
The blower cover air quantity of High-temperature cooling section 91 is bigger than normal, causes the blower cover exit gas temperature of medium temperature cooling section 92 relatively low, influences remaining
The utilization rate of waste heat of heat boiler 1, at this point, the aperture that can reduce the aperture of the first control valve 41, increase third control valve 61, makes
The input heat for obtaining waste heat boiler 1 keeps relative stability, and utilization rate of waste heat maintains certain level；When sinter granularity is thinner
Or bed depth it is partially thick when, the blower cover air quantity of High-temperature cooling section 91 is less than normal, and the heat for inputting waste heat boiler 1 is relatively low, and boiler reaches
Less than rated load, at this time, it is possible to increase the aperture of the second control valve 42, the aperture for reducing the 4th control valve 62 ensure more than input
The heat of heat boiler 1 makes waste heat boiler 1 reach rated generation power.Undoubtedly free burial ground for the destitute, above structure can equivalent replacement it is as follows：On
Stating third flue gas pipeline 6 also can be connected directly between on the blower cover of medium temperature cooling section 92 and arrival end is adjacent to the second flue gas pipeline
4 arrival end；For the above-mentioned structure using two first smoke inlet pipelines and two second smoke inlet pipelines, every 1 the
Two smoke inlet pipelines are adjacent to corresponding first smoke inlet pipelines setting.
Above structure, such as Fig. 1 are connected, the medium temperature cooling section 92 includes the medium temperature cooling one being sequentially arranged along stream direction
Area 921, medium temperature cool down two areas 922 and medium temperature cools down three areas 923, and blower cover is correspondingly provided with above each cooling zone；Wherein, among the above
The cooling area 921 of temperature is adjacent to the setting of High-temperature cooling section 91.Above-mentioned two first smoke inlet pipelines are connected respectively in described
Medium temperature cools down two areas 922 and the medium temperature cools down on the blower cover in three areas 923.
Further, such as Fig. 1, the medium temperature, which cools down, to be connected with the first flue gas and backflows pipeline 5 on the blower cover in an area 921,
First flue gas, 5 outlet end of pipeline of backflowing is connected on the cooling wind organization of supply of the High-temperature cooling section 91, on the one hand real
Now the medium temperature cools down recycling for the flue gas in an area 921, reduces the cooling gas consumption in High-temperature cooling section 91 to a certain extent
Amount, it is energy saving；On the other hand, the temperature of the flue gas of the part can be improved, and can to a certain extent improve by High-temperature cooling
The temperature for the flue gas that section 91 extracts effectively improves cigarette that is, so that the flue-gas temperature into 1 high temperature section of waste heat boiler has certain amplification
Gas utilization rate of waste heat.
Above structure is connected, above-mentioned third flue gas pipeline 6 can be connected to flue gas releasing device, off-gas recovery mechanism or flue gas
Utilize mechanism, you can by the medium temperature cooling section flue gas selection entered in the third flue gas pipeline 6 is diffused and (diffused after dedusting), heat is returned
Receive (for hot gas sintering, ignitor for sintering combustion air etc.) or carry out UTILIZATION OF VESIDUAL HEAT IN.Such as Fig. 1, in the present embodiment, further to carry
The fume afterheat utilization rate of high sinter cooler is arranged above-mentioned third flue gas pipeline 6 and is connect with low temperature heat mechanism, preferably
Ground, the low temperature heat mechanism include card Linne circulation mechanism, which uses low boiling working fluid conduct
Heat transferring medium, using flue gas as heat source medium, wherein above-mentioned low boiling working fluid mainly uses ammoniawater mixtures.Using above-mentioned
Card Linne circulation mechanism can effectively recycle the waste heat of medium temperature cooling section flue gas, and the fume afterheat for improving sinter cooler utilizes effect
Rate.
Connect above structure, such as Fig. 1, the card Linne circulation mechanism includes superheater 10, the third flue gas pipeline 6 with
The heat source medium entrance of the superheater 10 is connected to.Further, the medium temperature cooling section 92 further includes that medium temperature cools down 4th area
924, after four areas 924 of medium temperature cooling described in stream direction are located at three areas 923 of medium temperature cooling, the medium temperature cools down 4th area
The 4th flue gas pipeline 8 is connected on 924 blower cover；In the present embodiment, above-mentioned medium temperature cooling section 92 divides for four cooling zones, i.e.,
Above-mentioned one 921~medium temperature of area of medium temperature cooling cools down four areas 924, and four areas 924 of above-mentioned medium temperature cooling are adjacent to sub-cooled section 93 and set
It sets.The superheater 10 includes the low-temperature heat exchange section and high-temperature heat transfer section set gradually along working medium circulating direction, and the low temperature changes
Hot arc is equipped with and smoke inlet and be connected to the 4th flue gas pipeline 8, the high-temperature heat transfer section equipped with smoke inlet and with it is described
Third flue gas pipeline 6 is connected to.I.e.：Flue gas by the way that medium temperature to be cooled down to three areas 923 of two areas 922 and medium temperature cooling is sent into the card Linne
The high temperature section of the superheater 10 of circulation mechanism, the flue gas that medium temperature is cooled down to four areas 924 are sent into the overheat of the card Linne circulation mechanism
The low-temperature zone of device 10, realizes the cascade utilization of the gas energy of sinter cooler medium temperature cooling section 92, utilization ratio higher, more
Rationally.Further, as Fig. 1, above-mentioned 4th flue gas pipeline, 8 top set are connected with a branch line, which is connected to
On above-mentioned third flue gas pipeline 6, which is equipped with control valve, the branch line tie point and above-mentioned superheater 10 it
Between the 4th flue gas pipeline 8 be equipped with control valve；The flow direction that medium temperature cools down 4th areas, 924 flue gas is distributed by the branch line,
The temperature selection of 4th areas, 924 flue gas can be cooled down according to medium temperature into the high temperature section or low-temperature zone of superheater 10, also, can be passed through
The branch line adjusts the heat of input superheater 10 so that the input heat of superheater 10 keeps relative stability.
Further preferably, such as Fig. 1, the card Linne circulation mechanism further includes heater 18, the heat source of the superheater 10
Media outlet is connected to the heat source medium entrance of the heater 18, i.e., the superheater 10 through above-mentioned card Linne circulation mechanism exchanges heat
Flue gas afterwards enters the heater 18 and further exchanges heat, fully to recycle fume afterheat.
Following embodiment enumerates the concrete structure of a card Linne circulation mechanism：Such as Fig. 1, which included
Hot device 10, steam turbine, regenerator 20, condenser 19, heater 18 and low boiling working fluid gas-liquid separator 11, the work of superheater 10
Matter outlet is connected to the working medium entrances of steam turbine 13, and the sender property outlet of steam turbine 13 is connected to the working medium entrances of regenerator 20, is returned
The sender property outlet of hot device 20 is connected to the working medium entrances of condenser 19, and the sender property outlet of condenser 19 is by condensing pump and heater
18 working medium entrances connection, the sender property outlet of heater 18 are connected to low boiling working fluid gas-liquid separator 11, gas-liquid separator 11
Gas vent be connected to the working medium entrances of heater 18, the liquid outlet of gas-liquid separator 11 is connected to regenerator 20, liquid
Low boiling working fluid becomes gas-liquid mixture after being heated via regenerator 20 and is back in gas-liquid separator 11；Superheater 10 has height
Temperature section smoke inlet and low-temperature zone smoke inlet, high temperature section smoke inlet are connected to above-mentioned third flue gas pipeline 6, low-temperature zone flue gas
Entrance is connected to above-mentioned 4th flue gas pipeline 8, and the exhanst gas outlet of superheater 10 is connected to the smoke inlet of heater 18.
Above-mentioned steam turbine 13 is preferably the driving axis connection with main exhauster of sintering 14, to drive main exhauster of sintering 14 to do
Work(.Preferably, stand-by motor 12, the stand-by motor 12, the rotor main shaft of the steam turbine 13 and the main exhausting of sintering are additionally provided with
The drive shaft of machine 14 sequentially coaxially connects, i.e. the output shaft of stand-by motor 12 and the shaft main shaft of steam turbine 13 is coaxially connected, vapour
The shaft main shaft and the drive shaft of main exhauster of sintering 14 of turbine 13 are coaxially connected, are produced in the superheater 10 of card Linne circulation mechanism
When raw gaseous working medium is not sufficient to ensure that main exhauster 14 stablizes normal operation, which devotes oneself to work, to ensure to burn
Tie the normal table operation of main exhauster 14.
Above structure, such as Fig. 1 are advanced optimized, the heat source medium outlet of the heater 18 passes through the first smoke outlet tube
Road 17 is connect with the cooling wind organization of supply of the sub-cooled section 93.I.e. the flue gas of medium temperature cooling section 92 is through low temperature heat
After mechanism carries out UTILIZATION OF VESIDUAL HEAT IN, it is back to sub-cooled section 93 and is recycled as cooling wind, realize recycling for flue gas, effectively
Reduce the energy consumption of sinter cooler.Wherein, in the present embodiment, the sub-cooled section 93 includes being sequentially arranged along stream direction
Two area 932 of one area 931 of sub-cooled and sub-cooled, each cooling zone top are correspondingly provided with blower cover；First exhanst gas outlet
Pipeline 17 is connect with the cooling wind organization of supply in one area 931 of the sub-cooled.One area 931 of above-mentioned sub-cooled is adjacent to above-mentioned
Medium temperature cooling section 92 is arranged；It is connected with the second flue gas on the blower cover in one area 931 of sub-cooled to backflow pipeline 7, described second
Flue gas 7 outlet end of pipeline of backflowing is connected on the cooling wind organization of supply of the medium temperature cooling section 92, on the one hand realizes the low temperature
The flue gas in a cooling area 931 recycles, and reduces the cooling gas consumption in medium temperature cooling section 92 to a certain extent, saves energy
Source；On the other hand, it can be improved the temperature of the flue gas of the part, and can improve and be extracted by medium temperature cooling section 92 to a certain extent
The temperature of flue gas, i.e., so that the flue-gas temperature into 1 low-temperature zone of waste heat boiler and/or the superheater 10 of card Linne circulation mechanism has
Certain amplification effectively improves fume afterheat utilization ratio.
Such as Fig. 1, it is further preferred that 2nd area of the sub-cooled, 932 bottom is connected with the air blower for blasting air,
The 5th flue gas pipeline 16, the 5th flue gas pipeline 16 and sintering machine are connected on the blower cover in two area 932 of the sub-cooled
Hot-wind inlet connection, i.e., two area 932 of sub-cooled flue gas be sent into sintering machine carry out hot gas sintering.
Such as Fig. 1, it is further preferred that 17 top set of the first exhanst gas outlet pipeline is connected with the second smoke outlet tube
Road, the second exhanst gas outlet pipeline cool down cooling wind organization of supply and the medium temperature cooling two in an area 921 with the medium temperature
The cooling wind organization of supply in area 922 connects, and the second exhanst gas outlet pipeline is equipped with control valve.I.e. through low temperature heat machine
Treated that flue gas is mainly sent into one area 931 of sub-cooled for structure, when the partial fume amount is higher than the cooling in one area 931 of sub-cooled
When wind demand, it can be sent by the second exhanst gas outlet pipeline part to medium temperature and cool down an area 921 and medium temperature cooling two areas 922 progress
It recycles.
Continue to optimize above structure, the exhanst gas outlet of such as Fig. 1, the waste heat boiler 1 pass through third exhanst gas outlet pipeline 15
It is connect with the cooling wind organization of supply of the medium temperature cooling section 92, i.e., more than the flue gas of High-temperature cooling section 91 and medium temperature cooling section 92 warp
After heat boiler 1 carries out UTILIZATION OF VESIDUAL HEAT IN, it is back to medium temperature cooling section 92 and is recycled as cooling wind, realize recycling for flue gas,
Effectively reduce the energy consumption of sinter cooler.Further, 15 top set of third exhanst gas outlet pipeline is connected with the 4th flue gas
Outlet conduit, the 4th exhanst gas outlet pipeline are connect with the cooling wind organization of supply of the High-temperature cooling section 91, and the described 4th
Exhanst gas outlet pipeline is equipped with control valve；On the third smoke outlet tube further can also branch be connected with the 5th smoke outlet tube
Road, the 5th exhanst gas outlet pipeline are connect with the cooling wind organization of supply in one area 931 of above-mentioned sub-cooled, the 5th exhanst gas outlet
Pipeline is equipped with control valve.I.e. through waste heat boiler 1, treated that flue gas is mainly sent into that medium temperature cooling section 92 is (main in the present embodiment
To be that medium temperature cools down an area 921 and medium temperature cools down two areas 922), it can be according on the second flue gas pipeline 4 and third flue gas pipeline 6
The aperture of control valve, partial fume are sent to one area 931 of high temperature cooling section 91 and/or sub-cooled.
Using above-mentioned flue gas recirculation Land use systems, the energy consumption of sinter cooler is on the one hand effectively reduced, reduces production cost,
On the other hand, the temperature that the exiting flue gas of each cooling section can be improved, while ensureing sinter cooler cooling effect, further
Improve fume afterheat utilizing status.
Such as Fig. 1, in the present embodiment, the waste heat boiler 1 is also associated with the afterburning flue gas pipeline for supplying afterburning flue gas
2.When serious burning or serious underburnt occurring in sintering process and cause to input the heat wretched insufficiency of sinter cooler, lead to
The afterburning flue gas pipeline 2 suitably supplement afterburning flue gas is crossed, to maintain the stable operation of waste heat boiler 1.
Above-mentioned first flue gas pipeline 3, the second flue gas pipeline 4, third flue gas pipeline 6, the 4th flue gas pipeline 8, the first flue gas
It backflows pipeline 5 and the second flue gas backflows and is equipped with deduster on pipeline 7, to ensure each waste heat utilization equipment and sinter cooler
Equipment is safe to use, improves service life of equipment.Air-introduced machine can be set on third exhanst gas outlet pipeline 15, improve work effect
Rate.
The temperature of each part mentioned above sinter cooler flue gas has fluctuation with the difference of sinter property, usually, above-mentioned
For the flue gas exit temperature of High-temperature cooling section 91 substantially at 500~600 DEG C, above-mentioned medium temperature cools down the flue gas exit temperature in an area 921
Substantially at 350~400 DEG C, above-mentioned medium temperature cools down the flue gas exit temperature in two areas 922 substantially at 300~350 DEG C, and above-mentioned medium temperature is cold
But for the flue gas exit temperature in three areas 923 substantially at 250~300 DEG C, above-mentioned medium temperature cools down the flue gas exit temperature in four areas 924 substantially
At 200~250 DEG C, the flue gas exit temperature in one area 931 of above-mentioned sub-cooled is substantially at 150~200 DEG C, above-mentioned sub-cooled two
The flue gas exit temperature in area 932 is substantially at 100 DEG C or so.Pass through the flue gas of different nature to each cooled region of sinter cooler
Respective application is carried out, best sinter cooler fume afterheat utilizing status is can reach, sinter cooler fume afterheat is made to utilize
Efficiency maximizes；Meanwhile comprehensive regulation is carried out to the flue gas flow direction of different cooled regions, ensure smoke waste heat utilization system just
Normal stable operation, and can realize sinter cooler zero waste gas emission.
Embodiment two
Such as Fig. 1, the present embodiment provides a kind of sinter cooler, including cooler ontology, the cooler ontology includes
High-temperature cooling section 91, medium temperature cooling section 92 and sub-cooled section 93；Wherein, the medium temperature cooling section 92 include along stream direction according to
The medium temperature of secondary arrangement cools down an area 921, medium temperature cools down two areas 922, medium temperature cools down three areas 923 and medium temperature cools down four areas 924, each cold
But it is respectively equipped with blower cover above area；The sub-cooled section 93 includes one area of sub-cooled being sequentially arranged along stream direction
931 and two area 932 of sub-cooled, blower cover is respectively equipped with above each cooling zone.Above-mentioned cooler ontology is preferably cold using ring
Straight line cooler can also be used in machine certainly.
Such as Fig. 1, along cooler body length or circumferencial direction, above-mentioned cooler ontology is divided into 5 parts by air distribution structure, often
Partial length is about the 20% of cooler ontology overall length, to ensure the uniformity of the air distribution of each section；But it is specific per part
Length and accounting also need to be determined according to actual conditions parameters such as the correlation properties (such as porosity, inlet temperature) of sinter.Tool
Body can be：An air blower and multiple bellows are configured per part, the bellows quantity of each section is identical, in the present embodiment, every portion
It includes 4 bellows to divide.Along stream direction, above-mentioned High-temperature cooling section 91 constitutes wherein first part, and above-mentioned medium temperature cools down an area 921
Two areas 922 are cooled down with above-mentioned medium temperature and constitute wherein second part, and above-mentioned medium temperature cools down three areas 923 and above-mentioned medium temperature cools down 4th area
924 constitute wherein Part III, and one area 931 of above-mentioned sub-cooled constitutes wherein Part IV, 2nd area of above-mentioned sub-cooled, 932 structure
At wherein Part V.Wherein, above-mentioned medium temperature cools down an area 921 and medium temperature cools down the same length in two areas 922, institute's air distribution
Box number is identical；Above-mentioned medium temperature cools down three areas 923 and medium temperature cools down the same length in four areas 924, institute's air distribution box number phase
Together.
Using the above structure, the regulation and control of sinter cooler flue-gas temperature can be facilitated, wherein the flue gas of High-temperature cooling section 91 goes out
Mouth temperature is substantially at 500~600 DEG C, and medium temperature cools down the flue gas exit temperature in an area 921 substantially at 350~400 DEG C, and medium temperature cools down
For the flue gas exit temperature in two areas 922 substantially at 300~350 DEG C, medium temperature cools down the flue gas exit temperature in three areas 923 substantially 250
~300 DEG C, medium temperature cools down the flue gas exit temperature in four areas 924 substantially at 200~250 DEG C, and the flue gas in one area 931 of sub-cooled goes out
Mouth temperature is substantially at 150~200 DEG C, and the flue gas exit temperature in two area 932 of sub-cooled is substantially at 100 DEG C or so.Preferably, institute
It states cooler ontology and is connected with the sinter cooler smoke waste heat utilization system that above-described embodiment one is provided, the sinter cooler
The concrete structure of smoke waste heat utilization system and details are not described herein again with the connection relation of cooler ontology.By being cooled down to sintering
The classifying rationally of machine cooled region obtains flue gas of different nature, respective application is carried out for flue gas of different nature, to reach
Best sinter cooler fume afterheat utilizing status makes sinter cooler fume afterheat utilization ratio maximize；Meanwhile to not
Flue gas flow direction with cooled region carries out comprehensive regulation, ensures the normal table operation of smoke waste heat utilization system, and can be real
Existing sinter cooler zero waste gas emission.
As a kind of preferred structure of the present embodiment, such as Fig. 1, the cooler ontology further includes feed stage, the feed
Section is equipped with the buffering for accepting the sintering feed that prestores and prestores mechanism 94, which prestores, and that buffering batch can 94 can be used is equal often for mechanism 94
Buffering material stock equipment, the buffering prestore mechanism 94 realize sinter prestore, it can be achieved that sinter cooler continuous feeding, and
The work step for coordinating matching sintering machine and sinter cooler ensures above-mentioned sinter cooler smoke waste heat utilization system not because burning
The knot machine short time shuts down and influences operation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (9)
1. a kind of sinter cooler smoke waste heat utilization system, the sinter cooler includes High-temperature cooling section, medium temperature cooling
Section and sub-cooled section, which is characterized in that the system comprises：
The first flue gas pipeline being connected on the blower cover of the High-temperature cooling section, first flue gas pipeline and waste heat boiler
High temperature section entrance is connected to；
The second flue gas pipeline being connected on the blower cover of the medium temperature cooling section, second flue gas pipeline and the waste heat pot
The low-temperature zone entrance of stove is connected to, and second flue gas pipeline top set is connected with third flue gas pipeline, second flue gas pipeline
It is equipped with control valve on the third flue gas pipeline；
The third flue gas pipeline is connect with low temperature heat mechanism；
The medium temperature cooling section includes along the medium temperature that stream direction is sequentially arranged cools down an area, medium temperature cools down 2nd area and medium temperature cooling
3rd area, each cooling zone top are correspondingly provided with blower cover；
Second flue gas pipeline includes two first smoke inlet pipelines, wherein first smoke inlet pipelines are connected to
The medium temperature cools down on the blower cover in 2nd area, and another first smoke inlet pipelines are connected to the medium temperature and cool down drawing for 3rd area
On fan housing；The two first smoke inlet pipelines Shang Jun branches are connected with one second smoke inlet pipelines, two second flue gases
Inlet duct constitutes the inlet duct of the third flue gas pipeline；It is equipped with control valve in each smoke inlet pipelines；
It is disposed with boiler superheater in the high temperature section of the waste heat boiler, boiler province is disposed in the low-temperature zone of the waste heat boiler
Coal device.
2. sinter cooler smoke waste heat utilization system according to claim 1, it is characterised in that：The low temperature exhaust heat profit
Include card Linne circulation mechanism with mechanism.
3. sinter cooler smoke waste heat utilization system according to claim 2, it is characterised in that：
The medium temperature cooling section further includes that medium temperature cools down 4th area, and it is cold to be located at the medium temperature along 4th area of medium temperature cooling described in stream direction
But after 3rd area, the 4th flue gas pipeline is connected on the blower cover in 4th area of the medium temperature cooling；
The card Linne circulation mechanism includes superheater, and the superheater includes being changed along the low temperature that working medium circulating direction is set gradually
Hot arc and high-temperature heat transfer section, the low-temperature heat exchange section are equipped with smoke inlet and are connected to the 4th flue gas pipeline, the high temperature
Heat exchanging segment is equipped with smoke inlet and is connected to the third flue gas pipeline.
4. sinter cooler smoke waste heat utilization system according to claim 2 or 3, it is characterised in that：The low temperature cold
But section includes 2nd area of one area of sub-cooled and sub-cooled being sequentially arranged along stream direction, is correspondingly provided with and draws above each cooling zone
Fan housing；
The cooling that the exhanst gas outlet of the card Linne circulation mechanism passes through the first exhanst gas outlet pipeline and one area of the sub-cooled
Wind organization of supply connects.
5. sinter cooler smoke waste heat utilization system according to claim 4, it is characterised in that：
The medium temperature, which cools down, to be connected with the first flue gas and backflows pipeline on the blower cover in an area, first flue gas backflows tube outlet
End is connected on the cooling wind organization of supply of the High-temperature cooling section；And/or it is connected on the blower cover in one area of sub-cooled
There is the second flue gas to backflow pipeline, second flue gas tube outlet end of backflowing is connected to the cooling wind supply of the medium temperature cooling section
In mechanism.
6. sinter cooler smoke waste heat utilization system according to any one of claim 1 to 3, it is characterised in that：Institute
The exhanst gas outlet for stating waste heat boiler is connect by third exhanst gas outlet pipeline with the cooling wind organization of supply of the medium temperature cooling section.
7. sinter cooler smoke waste heat utilization system according to any one of claim 1 to 3, it is characterised in that：Institute
It states waste heat boiler and is connected with afterburning flue gas pipeline for supplying afterburning flue gas.
8. a kind of sinter cooler, including cooler ontology, it is characterised in that：The cooler ontology includes High-temperature cooling
Section, medium temperature cooling section and sub-cooled section；Wherein,
The medium temperature cooling section includes along the medium temperature that stream direction is sequentially arranged cools down an area, medium temperature cools down 2nd area, medium temperature cooling
3rd area and medium temperature cool down 4th area, and blower cover is respectively equipped with above each cooling zone；
The sub-cooled section includes 2nd area of one area of sub-cooled and sub-cooled being sequentially arranged along stream direction, each cooling zone
Top is respectively equipped with blower cover；
The cooler ontology connection utilizes system just like the sinter cooler fume afterheat described in any one of claim 1 to 7
System.
9. sinter cooler according to claim 8, it is characterised in that：The cooler ontology further includes feed stage, institute
The buffering that feed stage is equipped with for accepting the sintering feed that prestores is stated to prestore mechanism.
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| CN107702545B (en) * | 2017-08-15 | 2019-07-26 | 中冶华天工程技术有限公司 | A kind of sinter residual neat recovering system |
| CN107677139A (en) * | 2017-09-29 | 2018-02-09 | 四川德胜集团钒钛有限公司 | A kind of sintering waste heat utilization system |
| CN108007219A (en) * | 2017-11-23 | 2018-05-08 | 中材节能股份有限公司 | A kind of hot ore deposit cooling and residual neat recovering system |
| CN109612285B (en) * | 2018-12-05 | 2021-07-16 | 东北大学 | Cold quick-witted waste heat recovery device of ring of variable operating mode grading |
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| CN205919693U (en) * | 2016-07-19 | 2017-02-01 | 武汉都市环保工程技术股份有限公司 | Sinter cooler flue gas waste heat utilization system and sinter cooler |
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| CN101118125A (en) * | 2007-09-14 | 2008-02-06 | 昆明阳光基业股份有限公司 | Smelting sintered ring-cold heat-recovering generating plant and method thereof |
| CN201666737U (en) * | 2009-07-23 | 2010-12-08 | 北京佰能电气技术有限公司 | Pure low-temperature afterheat generator of sinter cooler |
| CN101825399B (en) * | 2010-04-21 | 2013-10-30 | 中冶长天国际工程有限责任公司 | Method and device for utilizing exhaust heat of waste gas in sinter cooler |
| CN201852474U (en) * | 2010-10-29 | 2011-06-01 | 南京凯盛开能环保能源有限公司 | Combined recovery and power generation system for waste heat in flue gas of sintering machine and waste gas of cooling machine |
| CN203336981U (en) * | 2013-05-06 | 2013-12-11 | 北京佰能蓝天科技有限公司 | Novel sintered ring refrigerator flue gas waste heat recycling system |
| CN203413967U (en) * | 2013-05-23 | 2014-01-29 | 广州智光节能有限公司 | Sintering afterheat power generating system with surplus steam |
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