CN105087854B - Converter high-temperature flue gas dry method dust and process waste heat staged reclaimer and method - Google Patents
Converter high-temperature flue gas dry method dust and process waste heat staged reclaimer and method Download PDFInfo
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- CN105087854B CN105087854B CN201510530609.4A CN201510530609A CN105087854B CN 105087854 B CN105087854 B CN 105087854B CN 201510530609 A CN201510530609 A CN 201510530609A CN 105087854 B CN105087854 B CN 105087854B
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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
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Abstract
The present invention relates to a kind of converter high-temperature flue gas dry method dust and process waste heat staged reclaimer and method, the equipment includes vertical flue, the 90 degree of end flues above steelmaking converter, steelmaking converter, the first vapor-water heat exchanger for being horizontally mounted, misting cooling gas wash tower, hot precipitator, the second vapor-water heat exchanger, drum and the oxygen-eliminating device that are horizontally mounted, first vapor-water heat exchanger one end is connected by 90 degree of end flues with vertical flue；Misting cooling gas wash tower top is connected by 90 degree of elbows with the other end of the first vapor-water heat exchanger；The bottom of misting cooling gas wash tower connects with hot precipitator；The net gas outlet of hot precipitator is connected with the second vapor-water heat exchanger.The present invention is due to the first vapor-water heat exchanger for being horizontally mounted in 90 degree end flue other ends connections and the second vapor-water heat exchanger connect with hot precipitator, it is possible to achieve multi-stage heat exchanger cooling, greatly, water consumption is few, and dust removal efficiency is high for temperature drop.
Description
Technical field
The present invention relates to a kind of converter high-temperature flue gas dry method dust and process waste heat staged recovery method and equipment, belong to
Steel-making flue gas waste heat recovery process field.
Background technology
Steel-making flue gas processing method traditional at present has OG methods and LT methods.The flow of OG methods be converter gas through overskirt, I to
After IV section of gasification cooling flue cooling, 800 DEG C or so are down to by 1600 DEG C, then enter a text, two texts and further lower the temperature and remove
Dirt, then draw centrifugal blower to three-way switch valve through luring, qualified coal gas sends into gas recovery cabinet, and the flue gas for not reaching recovery requirement enters
Enter diffusing tower igniting discharge.There is following defect in it：
1) the dedusting water that, a text, two texts need is very big；2), steam and wet dust are bonded to Vanes on Induced Draft Fan, cause to turn
It is sub uneven, cause blower fan to shake and damage, fault rate is high, the normal table operation of influence system；3), the easy fouling of system, causes to remove
Dirt ability declines, and dust collecting effect and clean-up effect are deteriorated, and fire door flue dust is excessive, diffusing tower emits tobacco；4), SR is big, consumption
It is electric high；5), sewage, sludge treating process are complicated, and floor space is big, and easily causes secondary pollution；6) by Wen's tube efficiency shadow
Ring, smoke dust discharge concentration is higher (being 50-100mg/Nm3).
LT dry method dusts most it is representational be devaporizer plus electrostatic precipitator flow, by West Germany Shandong is strange, the base of a fruit is gloomy
Company's joint is released, abbreviation LT methods.Technological process is：Flue gas enters after the indirect cooling of gasification cooling flue, then cold with evaporating
But device directly carry out cooling down-spray into atomized water to by the flue gas in devaporizer.The water of penetrating, exactly with refining
Produced in steel production process depending on the heat content of thermal current, after flue gas is cooled into 150 DEG C one 200 DEG C, introduced via gas piping
Electrostatic precipitator carries out refined dedusting.Then coal gas switching station, qualified coal are entered by air inducing equipment-- axial blower
, through entering recovery system after further cooling, underproof coal gas is through diffusing tower ignition bleeding for gas.The shortcoming of the dry method dust.
1) dry method dust cost is high, it is chain more to automatically control, it is desirable to high degree of automation；2) plant equipment for using is more, complex structure,
Fault rate is high, and maintenance time is long；3) because evaporation cooling makes to contain moisture higher in coal gas, condensation is easily formed, influences interpolar
Distance and working voltage, are that this has to wet cooling tower water, hydraulic pressure control while influenceing ash-transmission system equipment service life
It is strict with；4) scale problems are not solved also well on devaporizer wall；5) it is high to converter operation requirement, dedusting
Device, can sacrifice steel-making rhythm, otherwise explosive, although have explosion venting device, can still influence in electric cleaner the life-span of parts and remove
Dirt effect；6) gas temperature is high after dedusting, it is necessary to can just enter gas chamber after being cooled down using special cooling device, herein
Water consumption and wet dedusting periodical feeding amount are close.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of converter high-temperature flue gas dry method dust and process waste heat ladder
Formula reclaimer and method, overcome the defect of above-mentioned OG methods and LT methods technique and equipment.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：More than a kind of converter high-temperature flue gas dry method dust and process
Hot staged reclaimer, including vertical flue above steelmaking converter, steelmaking converter and topmost connect with vertical flue is connected
The 90 degree of one end of end flue for connecing, also remove including the first steam water heat exchanger for being horizontally mounted, misting cooling gas wash tower, high temperature
Dirt device, the second steam water heat exchanger, drum and the oxygen-eliminating device being horizontally mounted,
One end of first steam water heat exchanger connects with the other end of 90 degree of end flues；The misting cooling
Gas wash tower is arranged vertically and its top is connected by 90 degree of elbows with the other end of first steam water heat exchanger；The spraying
The bottom of cooling and dedusting tower is fixedly connected and connects with the top of the hot precipitator；The hot precipitator upper end is provided with only
Exhanst gas outlet, lower end is provided with ash hole；One end of second steam water heat exchanger and the neat stress outlet, other end connection
Converter gas recycling pipeline；The drum connects first steam water heat exchanger by water circulating pipe；The oxygen-eliminating device passes through
Water circulating pipe connects the second steam water heat exchanger connection；90 degree of end flues and/or 90 degree of elbows are provided with anti-letting out
Quick-fried device.
The beneficial effects of the invention are as follows：The present invention in 90 degree of end flue other ends due to connecting be horizontally mounted first
Steam water heat exchanger and the second steam water heat exchanger of hot precipitator connection, it is possible to achieve multi-stage heat exchanger is lowered the temperature, and temperature drop is big,
Water consumption is few, and dust removal efficiency is high.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement.
A kind of converter high-temperature flue gas dry method dust and process waste heat staged reclaimer as described above of the invention, enter one
Step, first steam water heat exchanger and the second steam water heat exchanger are the hollow cylindrical structure that close arranging pipe is made, close arranging pipe
The port at two ends is fixedly connected and connects with perpendicular box pipe, and perpendicular box pipe is provided with Media Interface Connector, and the Media Interface Connector is followed by water
Endless tube road is connected with the drum or oxygen-eliminating device.
It is using above-mentioned further beneficial effect：Because the first steam water heat exchanger and the second steam water heat exchanger are by close
The hollow cylindrical structure that comb is made, flue gas is passed through cooling medium such as water when by hollow cylindrical structure, in close arranging pipe,
Realize cooling to flue gas, and the port at close arranging pipe two ends is fixedly connected with perpendicular box pipe, perpendicular box pipe can by flange and its
His pipeline or the perpendicular box pipe being connected with pipeline are fixedly connected, and install replacing conveniently and heat exchanger effectiveness is high.
A kind of converter high-temperature flue gas dry method dust and process waste heat staged reclaimer as described above of the invention, enter one
Step, first steam water heat exchanger and the second steam water heat exchanger also include inner tube or along hollow cylindrical structure radial direction
Many shape tubes of arrangement, said inner tube is set in the hollow cylindrical structure, said inner tube and the hollow cylinder
It is connected by connector between structure；The hollow cylinder pipeline that said inner tube is made for close arranging pipe, close arranging pipe two ends
Port is fixedly connected with perpendicular box pipe；The two ends of the shape tube connect close arranging pipe or company in the hollow cylindrical structure
The logical perpendicular box pipe arranged along hollow cylindrical structure axial direction.
It is using above-mentioned further beneficial effect：Due to being arranged with hollow cylindrical structure in close arranging pipe is made
Pipe, flue gas by between inner tube and hollow cylindrical structure, or can be provided with along open circles in hollow cylindrical structure
Many shape tubes of column construction radial direction arrangement, when flue gas passes through hollow cylindrical structure, can further improve heat exchange
Efficiency.
A kind of converter high-temperature flue gas dry method dust and process waste heat staged reclaimer as described above of the invention, enter one
Step, the hollow cylindrical structure or hollow cylinder pipeline are turned round by the close arranging pipe of screw arrangement and turned to.
The misting cooling gas wash tower includes dedusting tower shell and tower top connecting leg section, and the dedusting tower shell is by vertical solid matter
Pipe is made, and the two ends of the vertical close arranging pipe are provided with Media Interface Connector and are connected with oxygen-eliminating device by perpendicular box pipe and perpendicular box pipe, described
Tower top connecting leg section lower end is fixedly connected by the perpendicular box pipe of gas wash tower case top；Flue gas distribution is provided with the tower top connecting leg section
Device and compensator；Double medium spray guns are provided with 90 degree of elbows of the tower top connecting leg section upper end connection.
It is using above-mentioned further beneficial effect：Because the first steam water heat exchanger and the second steam water heat exchanger pass through spiral shell
The close arranging pipe torsion for revolving arrangement is turned to, it is possible to reduce dust adheres to, and extends cleaning or replacing construction, improves heat exchanger effectiveness；Will
Dedusting tower shell is made of vertical close arranging pipe, and heat exchange can be further realized while water cooling is realized, is further carried
Heat exchanger effectiveness high.
A kind of converter high-temperature flue gas dry method dust and process waste heat staged reclaimer as described above of the invention, enter one
Step, the hot precipitator include dust storage chamber, the first filter chamber, the second filter chamber and neat stress room, the dust storage chamber upper end with it is described
The bottom of misting cooling gas wash tower, the first filter chamber and the second filter chamber is fixedly connected and connects；The neat stress room is located at described the
Two filter chambers top is simultaneously secured to and connects, and its top is provided with neat stress gas outlet, the neat stress gas outlet and described second
One end of steam water heat exchanger is fixedly connected and connects.The level that first filter chamber can be made up of horizontally disposed close arranging pipe
That places is columnar structured, and the housing of second filter chamber can be made up columnar structured of the close arranging pipe being vertically arranged.
A kind of converter high-temperature flue gas dry method dust and process waste heat staged reclaimer as described above of the invention, enter one
Step, the bottom of the dust storage chamber is provided with high temperature resistant plate band cinder conveyer, and the high temperature resistant plate band cinder conveyer passes through ash hole and pipeline
Connection ash-storing bin.
A kind of converter high-temperature flue gas dry method dust and process waste heat staged reclaimer as described above of the invention, enter one
Step, the dust storage chamber longitudinal section is inverted trapezoidal；In the first filter chamber and direction vertical with air-flow is provided with more than two
Stainless steel filter plate；It is disposed with many refractory ceramics membrane filtration pipes in second filter chamber vertically, the refractory ceramics membrane filtration pipe goes out
Gas port is located in the neat stress room.
The above-mentioned stainless steel filter plate of the present invention can be connected with the vibration dust-cleaning drive device on the outside of the first filter chamber,
Can timing cleaning stainless steel filter plate on dust.
Many above-mentioned refractory ceramics membrane filtration pipes of the present invention can also be connected and connect anti-blowpipe, and anti-blowpipe is arranged on described
Second filter chamber outside, anti-blowpipe can blow off from the gas outlet input air of refractory ceramics membrane filtration pipe and be attached to refractory ceramics membrane filtration
Dust outside pipe, improves smoke filtration efficiency.The hot precipitator structure is due to being provided with stainless steel filter plate, many refractory ceramics
Membrane filtration pipe and vibration dust-cleaning drive device and anti-blowpipe can effectively prevent scaling, influence flow of flue gas speed, increase
The stability of plant running.
A kind of converter high-temperature flue gas dry method dust and process waste heat staged reclaimer as described above of the invention, enter one
Step, second filter chamber is two or more, and it is connected by refractory ceramics membrane filtration pipe with the neat stress room.
A kind of converter high-temperature flue gas dry method dust and process waste heat staged reclaimer as described above of the invention, enter one
Step, the housing of the hot precipitator is made up of close arranging pipe, and the port of close arranging pipe is by perpendicular box pipe and following of being connected with perpendicular box pipe
Oxygen-eliminating device described in ring pipeline connection.
A kind of converter high-temperature flue gas dry method dust and process waste heat staged reclaimer as described above of the invention, enter one
Step, also including gas cooler, the gas cooler is connected with converter gas recycling pipeline, and single medium spray gun is provided with it,
Bottom connects water lute drainer, and top connects gas fan by pipeline.
Using a kind of above-mentioned converter high-temperature flue gas dry method dust of the present invention and process waste heat staged equipment, water is used per hour
Amount is only 40 to 80 tons, and is absorbed by high-temperature flue gas, and it is dry ash to integrate in ash silo, reduces original muddy water circular treatment facility
And the cost of operation maintenance；The online use time of rotor in gas fan is also significantly improved.
The present invention also provides the recovery side of a kind of above-mentioned converter high-temperature flue gas dry method dust and process waste heat staged equipment
Method, comprises the following steps：Step (1), steelmaking converter produces a large amount of coal gas in smelting process and is mingled with the mixing cigarette of particulate
Gas, mixed gas carry out one-level heat exchange cooling, recovered steam by the vertical flue above steelmaking converter and 90 degree of end flues；
Step (2), secondary heat exchange cooling is carried out from 90 degree of end flues flue gas out by the first steam water heat exchanger,
Recovered steam；
Step (3), three-level cooling dedusting is carried out by the flue gas after step (2) heat exchange into misting cooling gas wash tower, is removed
Go the particulate dedusting of more than 40um；
Step (4) is by after misting cooling gas wash tower, flue gas enters high-temperature dust removal by the bottom of misting cooling gas wash tower
Device, dust falls into the bottom of hot precipitator, and flue gas enters the by the neat stress that is obtained after the top dedusting of hot precipitator
Two steam water heat exchangers enter converter gas recycling pipeline after being exchanged heat.
The structure that present invention close arranging pipe described above is constituted or is made, is tightly connected between its close arranging pipe.
Brief description of the drawings
Fig. 1 is a kind of converter high-temperature flue gas dry method dust of the invention and process waste heat staged reclaimer structural representation
Figure；
Fig. 2 is that the high temperature in a kind of converter high-temperature flue gas dry method dust of the invention and process waste heat staged reclaimer is removed
The longitudinal profile schematic diagram of dirt device；
Fig. 3 is that the high temperature in a kind of converter high-temperature flue gas dry method dust of the invention and process waste heat staged reclaimer is removed
The horizontal section schematic diagram of dirt device；
Fig. 4 be the first vapour in a kind of converter high-temperature flue gas dry method dust of the invention and process waste heat staged reclaimer-
Water- to-water heat exchanger structural representation；
Fig. 5 be the first vapour in a kind of converter high-temperature flue gas dry method dust of the invention and process waste heat staged reclaimer-
A kind of structural representation of implementation method of water- to-water heat exchanger；
Fig. 6 be the first vapour in a kind of converter high-temperature flue gas dry method dust of the invention and process waste heat staged reclaimer-
The structural representation of water- to-water heat exchanger another embodiment.
In accompanying drawing, the list of parts representated by each label is as follows：
1st, steelmaking converter, 2, vertical flue, 3,90 degree of end flues, the 4, first steam water heat exchanger, 5, misting cooling dedusting
Tower, 6, hot precipitator, the 7, second steam water heat exchanger, 8, drum, 9, oxygen-eliminating device, 10,90 degree of elbows, 11, RECOVERY OF CONVERTER GAS
Pipeline, the 12, first water circulating pipe, the 13, second water circulating pipe, 14, anti-explosion venting device, 15, close arranging pipe, 16, perpendicular box pipe,
17th, Media Interface Connector, 18, flange, 19, inner tube, 20, shape tube, 21, dedusting tower shell, 22, tower top connecting leg section, 23, flue gas distribution
Device, 24, compensator, 25, double medium spray guns, 26, dust storage chamber, the 27, first filter chamber, the 28, second filter chamber, 29, neat stress room, 30,
High temperature resistant plate band cinder conveyer, 31, ash-storing bin, 32, unloading valve, 33, stainless steel filter plate, 34, refractory ceramics membrane filtration pipe, 35, rapping
Deashing drive device, 36, anti-blowpipe, 37, gas cooler, 38, single medium spray gun, 39, water lute drainer, 40, gas fan,
41st, neat stress gas outlet.
Specific embodiment
Principle of the invention and feature are described below in conjunction with accompanying drawing, example is served only for explaining the present invention, and
It is non-for limiting the scope of the present invention.
As shown in figure 1, a kind of converter high-temperature flue gas dry method dust and process waste heat staged reclaimer, including steel-making turn
Vertical flue 2 above stove 1, steelmaking converter and with 90 degree one end of end flue 3 for being connected the connection topmost of vertical flue, and also
Including be horizontally mounted the first steam water heat exchanger 4, misting cooling gas wash tower 5, hot precipitator 6, be horizontally mounted the second vapour-
Water- to-water heat exchanger 7, drum 8 and oxygen-eliminating device 9,
One end of first steam water heat exchanger 4 connects with the other end of 90 degree of end flues 3；Misting cooling gas wash tower 5 is vertical
Arrange and its top is connected by 90 degree of elbows 10 with the other end of the first steam water heat exchanger 4；The bottom of misting cooling gas wash tower 5
End is fixedly connected and connects with the top of hot precipitator 6；The upper end of hot precipitator 6 is provided with neat stress outlet, and lower end is provided with out
Grey mouth；One end of second steam water heat exchanger 7 and neat stress outlet, other end connection converter gas recycling pipeline 11；Drum
8 connect the first steam water heat exchanger 4 by the first water circulating pipe 12；Oxygen-eliminating device 9 connects second by the second water circulating pipe 13
Steam water heat exchanger 7 is connected；90 degree of end flues 3 and/or 90 degree of elbows 10 are provided with anti-explosion venting device 14.
A kind of converter high-temperature flue gas dry method dust of the present invention and process waste heat staged reclaimer, in some specific implementations
In example, as shown in Fig. 2 the first above-mentioned steam water heat exchanger 4 and the second steam water heat exchanger 7 be that close arranging pipe 15 is made it is hollow
Cylindrical structural, the port at the two ends of close arranging pipe 15 is fixedly connected with perpendicular box pipe 16, and perpendicular box pipe 16 is provided with Media Interface Connector 17, is situated between
Matter interface 17 is connected by circulating line with drum 8 or oxygen-eliminating device 9, flue gas when by hollow cylindrical structure, close arranging pipe 15
Cooling medium such as water is inside passed through, the cooling to flue gas is realized, and the port at the two ends of close arranging pipe 15 is fixedly connected with perpendicular box pipe 16,
Perpendicular box pipe can be fixedly connected by flange 18 with other pipelines or other perpendicular box pipes being connected with pipeline, install replacing side
Just and heat exchanger effectiveness is high.
Particularly preferably, the first steam water heat exchanger 4 and the second steam water heat exchanger 5 are also set in including the inner tube 19 of inner tube 19
In hollow cylindrical structure, it is connected by connector between inner tube 19 and hollow cylindrical structure；Inner tube 19 is close arranging pipe
The hollow cylinder pipeline being made, the port at close arranging pipe two ends is fixedly connected and connects with perpendicular box pipe.
In further embodiments, it is different in many shape tubes 20 also arranged along hollow cylindrical structure radial direction
The two ends of type pipe 20 connect with the perpendicular box pipe 16 arranged along hollow cylindrical structure axial direction, can further improve heat exchange
Efficiency.Preferably, the close arranging pipe screw arrangement of above-mentioned hollow cylindrical structure and inner tube and turn round around formation, it is possible to reduce dust
Attachment, extension cleaning or replacing construction, improve heat exchanger effectiveness.
As above a kind of converter high-temperature flue gas dry method dust of the present invention and process waste heat staged reclaimer, in other tools
In body embodiment, misting cooling gas wash tower 5 includes dedusting tower shell 21 and tower top connecting leg section 22, and dedusting tower shell 21 is by close vertically
Comb is made, and the two ends of vertical close arranging pipe are provided with Media Interface Connector 17 and are connected with oxygen-eliminating device 9 by perpendicular box pipe 16 and perpendicular box pipe 16,
Tower top connecting leg 22 lower ends of section are fixedly connected by the perpendicular box pipe 16 at the top of dedusting tower shell 21；Flue gas is provided with tower top connecting leg section 22
Distributor 23 and compensator 24；Double medium spray guns 25 are provided with 90 degree of elbows 10 of tower top connecting leg section 22 upper ends connection.The structure
Heat exchange can be further realized while water cooling can be realized, heat exchanger effectiveness is improved.
As above a kind of converter high-temperature flue gas dry method dust of the present invention and process waste heat staged reclaimer, in other tools
In the embodiment of body, as shown in figures 1 and 3, hot precipitator 6 includes dust storage chamber 26, the first filter chamber 27, the second filter chamber 28 and net
Smoke chamber 29, the upper end of dust storage chamber 26 be fixedly connected side by side and connect misting cooling gas wash tower 5, the first filter chamber 27 and the second filter chamber
28 bottom；Neat stress room 29 is located at the top of the second filter chamber 28 and communicates therewith, and its top is provided with neat stress gas outlet 41, net cigarette
Gas gas outlet 41 is fixedly connected with one end of the second steam water heat exchanger 7.
Particularly preferably, the bottom of dust storage chamber 26 is provided with high temperature resistant plate band cinder conveyer 30, and high temperature resistant plate band cinder conveyer 30 leads to
Ash hole and pipeline connection ash-storing bin 31 are crossed, unloading valve 32 is installed on the pipeline.
It is highly preferred that the longitudinal section of dust storage chamber 26 is inverted trapezoidal；In first filter chamber 27 and the direction vertical with air-flow is provided with
More than two stainless steel filter plates 33；Many refractory ceramics membrane filtration pipes 34, refractory ceramics film are disposed with second filter chamber 28 vertically
The gas outlet of chimney filter 34 is located in neat stress room 29, i.e. the second filter chamber 28 and neat stress room 29 are connected by refractory ceramics membrane filtration pipe 34
It is logical.
Stainless steel filter plate 33, refractory ceramics membrane filtration pipe 34 can be suspended from the filter chamber 28 of first filter chamber 27 and second
Interior, flue gas level run in the first filter chamber 27 and the second filter chamber 28 realizes ladder according to vector majorization and micro porous filtration principle
Formula is filtered, and reaches the concentration of emission of various requirement, and running resistance is small, and leak out Shuai≤2%, and efficiency of dust collection is high, filter material self-cleaning property
Good, long service life integrally occupies little space, and system job is realized automatically controlling, and solid matter tube shell accesses low pressure recycle system,
Dedusting realizes energy recovery simultaneously.
It is highly preferred that stainless steel filter plate 33 can be connected by connectors such as connecting rods installs shaking for the outside of hot precipitator 6
Deashing drive device 35 is beaten, the dust on the cleaning stainless steel filter plate 33 of timing is realized；Many refractory ceramics membrane filtration pipes 34 may be used also
To connect and anti-blowpipe 36 is connected, anti-blowpipe 36 can blow off from the gas outlet input air of refractory ceramics membrane filtration pipe and be attached to height
Dust outside warm ceramic membrane chimney filter 34, improves smoke filtration efficiency, can effectively prevent scaling, influence flow of flue gas speed
Rate, increases the stability of plant running.
In some specific examples, second filter chamber 28 be two or more, its by refractory ceramics membrane filtration pipe 34 with
Neat stress room 29 connects.
In some other specific examples, above-mentioned dust storage chamber 26, the first filter chamber 27, the second filter chamber 28 and neat stress room
29 housing is made up of close arranging pipe, and the two ends of close arranging pipe connect oxygen-eliminating device 9 by perpendicular box pipe and circulation line.
As above a kind of converter high-temperature flue gas dry method dust of the present invention and process waste heat staged reclaimer, in other tools
In the embodiment of body, also including gas cooler 37, gas cooler 37 is connected with converter gas recycling pipeline 11, is provided with it
Single medium spray gun 38, bottom connection water lute drainer 39, top connects gas fan 40 by pipeline.Gas fan
A kind of one kind using above-mentioned converter high-temperature flue gas dry method dust and process waste heat staged reclaimer is specific
Embodiment：Steelmaking converter produces substantial amounts of high temperature and containing a large amount of coal gas and is mingled with the mixed gas of particulate in smelting process,
Temperature carries out one-level heat exchange cooling through fire door at 1450 DEG C -1600 DEG C into vertical flue, and temperature is down to 900 DEG C by 1600 DEG C
Left and right, and reclaim more than 200 DEG C steam 100m3/ t, flue gas carries out second level heat exchange drop into the first steam water heat exchanger
Temperature, is down to 600 DEG C or so, and reclaim more than 200 DEG C steam 30m by 900 DEG C3/ t, flue gas enters back into misting cooling gas wash tower, enters
The cooling of row three-level, rough dedusting and heat exchange, temperature are down to 300 DEG C or so by 600 DEG C, more than dust removal efficiency 40 to 50%, i.e., 40 μm
Particulate dedusting.Then flue gas carries out more than refined dedusting, i.e., 1 μm particulate dedusting through connecting leg into the first filter chamber of hot precipitator.
The second filter chamber that flue gas subsequently enters hot precipitator carries out removing dust again, it is ensured that dust content is at or below 10mg/m3,
Above-mentioned misting cooling gas wash tower, deduster, the housing of high temperature film dust-remover can use tube-to-tube construction form, access deoxygenation
Device, heats to the water in oxygen-eliminating device, saves storage heater and is sent back to the steam consumption of oxygen-eliminating device concurrent heating and there are about 6m3/ h, flue gas
65 DEG C or so are cooled to through converter gas recycling pipeline and gas cooler again, by gas fan dynamic action, qualified coal gas send
Enter gas chamber, unqualified coal gas is along exhaust stack burning and exhausting.The present invention is through misting cooling gas wash tower and the two-stage of hot precipitator
More than 200 DEG C carbon containing (more than C50%) powder ashes of high temperature are removed by filtration, ash silo is fallen into, unloading valve can be controlled by level-sensing device,
Powder ash sends into bulk cement storage tank from refractory plate ribbon flight cinder conveyer, then gives pelletizing pelletizing or sintering through gas delivery system or tank car
Spice.
In the description of the invention, it is to be understood that the orientation of instruction such as term " axial direction ", " radial direction ", " circumference " or
Position relationship is, based on orientation shown in the drawings or position relationship, to be for only for ease of the description present invention and simplify description, without
Be indicate or imply meaning device or element must have specific orientation, with specific azimuth configuration and operation, therefore not
It is understood that to be limitation of the present invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In the description of the invention, " multiple " is meant that at least two, such as two, three
It is individual etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be that machinery connects
Connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, unless otherwise clearly limit
It is fixed.For the ordinary skill in the art, above-mentioned term in the present invention specific can as the case may be understood
Implication.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be with
It is the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be with office
Combined in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
Art personnel can be tied the feature of the different embodiments or example described in this specification and different embodiments or example
Close and combine.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all it is of the invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (10)
1. a kind of converter high-temperature flue gas dry method dust and process waste heat staged reclaimer, including steelmaking converter, steelmaking converter
The vertical flue of top and with 90 degree of end flues for being connected the connection topmost of vertical flue, it is characterised in that also including level
The first steam water heat exchanger, misting cooling gas wash tower, hot precipitator, the second steam water heat exchanger, the vapour that are horizontally mounted installed
Bag and oxygen-eliminating device,
One end of first steam water heat exchanger connects with the other end of 90 degree of end flues；The misting cooling dedusting
Tower is arranged vertically and its top is connected by 90 degree of elbows with the other end of first steam water heat exchanger；The misting cooling
The bottom of gas wash tower is fixedly connected and connects with the top of the hot precipitator；The hot precipitator upper end is provided with neat stress
Outlet, lower end is provided with ash hole；One end of second steam water heat exchanger and the neat stress outlet, other end connection converter
Coal-gas recovering pipeline；The drum connects first steam water heat exchanger by water circulating pipe；The oxygen-eliminating device is followed by water
Second steam water heat exchanger described in ring pipeline communication；90 degree of end flues and/or 90 degree of elbows are provided with anti-explosion venting device.
2. a kind of converter high-temperature flue gas dry method dust and process waste heat staged reclaimer according to claim 1, it is special
Levy and be, first steam water heat exchanger and the second steam water heat exchanger are the hollow cylindrical structure that close arranging pipe is made, close
The port at comb two ends is fixedly connected and connects with perpendicular box pipe, and perpendicular box pipe is provided with Media Interface Connector, and the Media Interface Connector passes through
Water circulating pipe is connected with the drum or oxygen-eliminating device.
3. a kind of converter high-temperature flue gas dry method dust and process waste heat staged reclaimer according to claim 2, it is special
Levy and be, first steam water heat exchanger and the second steam water heat exchanger also include inner tube or along hollow cylindrical structure radially
Many shape tubes of direction arrangement, said inner tube is set in the hollow cylindrical structure, said inner tube and the open circles
It is connected by connector between column construction；The hollow cylinder pipeline that said inner tube is made for close arranging pipe, close arranging pipe two
The port at end is fixedly connected with perpendicular box pipe；The two ends of the shape tube connect close arranging pipe in the hollow cylindrical structure or
The perpendicular box pipe that person's connection is arranged along hollow cylindrical structure axial direction.
4. a kind of converter high-temperature flue gas dry method dust and process waste heat staged reclaimer according to claim 3, it is special
Levy and be, the hollow cylindrical structure or hollow cylinder pipeline are turned round by the close arranging pipe of screw arrangement and turned to；
The misting cooling gas wash tower includes dedusting tower shell and tower top connecting leg section, and the dedusting tower shell is by vertical solid matter control
Into the two ends of the vertical close arranging pipe are provided with Media Interface Connector and are connected with oxygen-eliminating device by perpendicular box pipe and perpendicular box pipe, the tower top
Connecting leg section lower end is fixedly connected by the perpendicular box pipe of gas wash tower case top；Be provided with the tower top connecting leg section smoke distributor and
Compensator；Double medium spray guns are provided with 90 degree of elbows of the tower top connecting leg section upper end connection.
5., according to a kind of converter high-temperature flue gas dry method dust of claim 1 and process waste heat staged reclaimer, its feature exists
Include dust storage chamber, the first filter chamber, the second filter chamber and neat stress room in, the hot precipitator, the dust storage chamber upper end with it is described
The bottom of misting cooling gas wash tower, the first filter chamber and the second filter chamber is fixedly connected and connects；The neat stress room is located at described the
Two filter chambers top is simultaneously secured to and connects, and its top is provided with neat stress gas outlet, the neat stress gas outlet and described second
One end of steam water heat exchanger is fixedly connected and connects.
6., according to a kind of converter high-temperature flue gas dry method dust of claim 5 and process waste heat staged reclaimer, its feature exists
In the bottom of the dust storage chamber is provided with high temperature resistant plate band cinder conveyer, and the high temperature resistant plate band cinder conveyer passes through ash hole and pipeline
Connection ash-storing bin.
7., according to a kind of converter high-temperature flue gas dry method dust of claim 5 and process waste heat staged reclaimer, its feature exists
In the dust storage chamber longitudinal section is inverted trapezoidal；In the first filter chamber and direction vertical with air-flow is provided with more than two
Stainless steel filter plate；It is disposed with many refractory ceramics membrane filtration pipes in second filter chamber vertically, the refractory ceramics membrane filtration pipe goes out
Gas port is located in the neat stress room.
8., according to a kind of converter high-temperature flue gas dry method dust of claim 7 and process waste heat staged reclaimer, its feature exists
In second filter chamber is two or more, and it is connected by refractory ceramics membrane filtration pipe with the neat stress room；The high temperature is removed
The housing of dirt device is made up of close arranging pipe, and the port of close arranging pipe connects described by perpendicular box pipe and the circulation line being connected with perpendicular box pipe
Oxygen-eliminating device.
9. a kind of converter high-temperature flue gas dry method dust and process waste heat staged are reclaimed according to any one of claim 1 to 8
Equipment, it is characterised in that also including gas cooler, the gas cooler is connected with converter gas recycling pipeline, is set in it
There is single medium spray gun, bottom connects water lute drainer, and top connects gas fan by pipeline.
10. a kind of converter high-temperature flue gas dry method dust and process waste heat staged equipment as described in any one of claim 1 to 9
Recovery method, it is characterised in that comprise the following steps：Step (1), steelmaking converter produced in smelting process a large amount of coal gas and
It is mingled with the mixed flue gas of particulate, mixed gas carry out one-level by the vertical flue above steelmaking converter and 90 degree of end flues
Heat exchange cooling, recovered steam；
Step (2), secondary heat exchange cooling is carried out from 90 degree of end flues flue gas out by the first steam water heat exchanger, is reclaimed
Steam；
Step (3), three-level cooling dedusting is carried out by the flue gas after step (2) heat exchange into misting cooling gas wash tower, is removed
The particulate dedusting of more than 40um；
Step (4) is grey by after misting cooling gas wash tower, flue gas enters hot precipitator by the bottom of misting cooling gas wash tower
Dirt falls into the bottom of hot precipitator, flue gas by the neat stress that is obtained after the top dedusting of hot precipitator enter the second vapour-
Water- to-water heat exchanger enters converter gas recycling pipeline after being exchanged heat.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510530609.4A CN105087854B (en) | 2015-08-26 | 2015-08-26 | Converter high-temperature flue gas dry method dust and process waste heat staged reclaimer and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510530609.4A CN105087854B (en) | 2015-08-26 | 2015-08-26 | Converter high-temperature flue gas dry method dust and process waste heat staged reclaimer and method |
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| Publication Number | Publication Date |
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| CN105087854A CN105087854A (en) | 2015-11-25 |
| CN105087854B true CN105087854B (en) | 2017-07-07 |
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| CN201510530609.4A Expired - Fee Related CN105087854B (en) | 2015-08-26 | 2015-08-26 | Converter high-temperature flue gas dry method dust and process waste heat staged reclaimer and method |
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| CN106861315B (en) * | 2017-02-25 | 2022-11-18 | 秦皇岛同力达环保能源股份有限公司 | High temperature membrane dust removal subassembly and high temperature membrane dust remover |
| CN109986011A (en) * | 2018-01-02 | 2019-07-09 | 通用电气公司 | Forge head, forging apparatus and increasing material manufacturing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202482346U (en) * | 2012-03-01 | 2012-10-10 | 九源天能（北京）科技有限公司昆明分公司 | Steelmaking converter smoke heat recovery and total-effect utilization device |
| CN102538497B (en) * | 2012-03-01 | 2013-10-02 | 九源天能（北京）科技有限公司昆明分公司 | Method and device for recovery and full-effect utilization of flue gas thermal energy of steel converter |
| CN204824950U (en) * | 2015-08-26 | 2015-12-02 | 天津泰通金属结构制造有限公司 | Converter high temperature flue gas dry process is removed dust and cascaded recovery plant of process waste heat |
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Effective date of registration: 20170417 Address after: 301500 Ninghe economic and Technological Development Zone, Ninghe City, the five weft Road, Tianjin Applicant after: Fang Rui Address before: 301500 Ninghe economic and Technological Development Zone, Ninghe City, the five weft Road, Tianjin Applicant before: TIANJIN TAITONG METAL STRUCTURE MANUFACTURING Co.,Ltd. |
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