CN102719579B - Fluidized heat exchange device after slag of dry type granulating blast furnace - Google Patents
Fluidized heat exchange device after slag of dry type granulating blast furnace Download PDFInfo
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- CN102719579B CN102719579B CN2012101754933A CN201210175493A CN102719579B CN 102719579 B CN102719579 B CN 102719579B CN 2012101754933 A CN2012101754933 A CN 2012101754933A CN 201210175493 A CN201210175493 A CN 201210175493A CN 102719579 B CN102719579 B CN 102719579B
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- slag
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
- C21B2400/022—Methods of cooling or quenching molten slag
- C21B2400/026—Methods of cooling or quenching molten slag using air, inert gases or removable conductive bodies
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/066—Receptacle features where the slag is treated
- C21B2400/076—Fluidised bed for cooling
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/08—Treatment of slags originating from iron or steel processes with energy recovery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a fluidized heat exchange device after slag of dry type granulating blast furnace, and belongs to a waste heat utilization device in the field of metallurgy. The fluidized heat exchange device comprises a fluidized bed body, a waste heat smoke gas collecting unit and an air distribution and material return unit, wherein the air distribution and material return unit is arranged at the lower part of the fluidized bed body; the waste heat smoke gas collecting unit is arranged at the upper part of the fluidized bed body and is used for collecting the waste heat smoke gas obtained through heat exchange and outputting the waste heat smoke gas; and a multilayer overflowing plate for smashing slag particles is also arranged inside the fluidized bed body, a feeding port is formed on one random side of the fluidized bed body, and the feeding port is formed above the multilayer overflowing plate. The fluidized heat exchange device after slag of the dry type granulating blast furnace is simple in structure, is suitable for heat exchange cooling of various blast furnace slag, is particularly suitable to be used as a heat exchanger device in a blast furnace slag continuous dry treatment waste heat continuous utilization system, and is wide in range of application.
Description
Technical field
The present invention relates to the residual heat using device in a kind of field of metallurgy, in particular, the present invention relates generally to the fluidisation heat exchanger after a kind of dry granulation blast-furnace slag.
Background technology
Blast-furnace slag is a kind of byproduct that blast furnace ironmaking produces, and is a kind of well behaved silicate material, through processing treatment, is mainly used in making the raw material of material of construction and chemical fertilizer.Simultaneously, in blast furnace production process, enter various former, the fuel of stove after smelting, except obtaining molten iron (conversion pig or foundry iron) and byproduct blast furnace gas, gangue in iron ore, ash content in fuel and flux merge and just form liquid slag, and its general temperature is 1450～1650 ℃, regularly from cinder notch, iron mouth, discharge.Usually the slag that will discharge from cinder notch is called " slag ", and that from the iron mouth, in company with molten iron, discharges is called " slag ", in lower slag, often is mixed with a small amount of molten iron.The chemical composition of blast-furnace slag depends on that the working of a furnace in material composition, smelt iron kind, working method and smelting process changes.In blast furnace slag, main component is CaO, MgO, SiO
2and Al
2o
3, accounting for more than 95% of total amount, these four kinds of compositions can determine the metallurgical performance of blast furnace slag substantially.The Flos Bombacis Malabarici vanadium titano-magnetite contains more TiO
2, the packet header baiyuneboite contains more CaF
2, with these particular iron ore smeltings, corresponding TiO in slag
2, CaF
2more.In addition, also contain a small amount of FeO, MnO and CaS and some minor compounds in slag, its basicity is generally 0.9～1.25.When blast-furnace smelting normally carries out, slag composition changes little, but sometimes needs to adjust in process of production charge composition, slag composition respective change now, and the working of a furnace changes slag composition and also can change, Feo, SiO in slag when stove is cold
2content can slightly have and increase.1 ton of pig iron of every production is wanted by-product 300～400Kg slag, and outflow temperature is at 1450～1650 ℃, and the 1t blast furnace slag approximately, containing the heat of 1800MJ, is amounted to the 64Kg standard coal.The blase furnace cast iron output of China in 2011 is 6.3 hundred million t, and the generation of blast furnace slag is about 2.14 hundred million t, and institute's heat content is amounted to 1,370 ten thousand t standard coals.
At present, the liquid blast-furnace slag of China adopts water quenching to produce grain slag more than 90%, and the blast-furnace slag after water-cooled can be used for manufacturing the material of construction such as cement, and water treating method commonly used has Yin Bafa, figure daraf(reciprocal of farad), Lhasa method etc.The subject matter that the method exists has: water consumption is serious, processes 1 ton of slag water consumption per ton, and a large amount of H that produce
2s and SO
xgas enters atmosphere with water vapour, causes environmental pollution.Process the 1t slag and produce 800m
3water vapor, wherein H2S content 19mg/m
3, SO
2content 4.319mg/m
3; The waste heat of slag is not effectively recycled; The grain slag water ratio is high simultaneously, as cement raw material, still needs drying treatment, needs to consume certain energy; Investment and the running cost of system are high, and the blast furnace of a daily output 2500t will be built two cover flush slag equipment, and construction investment is generally 4,000 ten thousand yuan of left and right, and in the flush slag process, the slag that iron content is higher easily sets off an explosion; And the grain slag purposes is more single.The H produced
2s and SO
xenter atmosphere Deng obnoxious flavour with steam, promote the formation of acid rain, the accumulation of Water Quenching Slag has taken a large amount of land areas, even there will be sand, and aggravating working environment causes serious environmental pollution.Domestic blast furnace slag heat recovery only limits to the using exhaust heat of slag flushing water heating.There was the report that adopts using exhaust heat of slag flushing water to solve plant area's part heating or bathroom supplying hot water in the enterprises such as Shoudu Iron and Steel Co, Ji steel, Xuan Gang, Anshan iron and steel plant, this steel, Laigang, An Gang.But this utilization only accounts for the seldom part of blast furnace slag complete sensible heat, and the waste heat recovery rate is low, be only 10% left and right, and be subject to time and regional limits, in summer with without the southern area of warming installation, this part energy can only be wasted, and therefore applies and is restricted.Visible; the molten blast furnace slag dry granulation is processed and waste heat recovery just becomes iron and steel enterprise's environment protection and energy-saving and cost-reducing important channel; under the prerequisite that guarantees finished product slag particle economic benefit; how the high temperature slag particle waste heat high efficiente callback after dry granulation is utilized, will become one of core technology of whole molten slag Transforming Engineering.
Conventional dry granulation high temperature slag particle heat recovery technology, directly pass into waste heat boiler equipment using the high temperature slag particle as heat source medium, by heating surface, carry out the heat exchange recovery.The characteristics of this technical scheme are that consumption of new water, theoretical recovery waste heat quality high (heat exchange), initial investment cost are not low, but can't solve some problems of the actual generation of engineering, as: once high temperature slag particle secondary caking, heating surface wear heating surface wear booster cause contradiction between slag particle band water, slag particle mobility and heat exchange efficiency etc.
Summary of the invention
One of purpose of the present invention is to solve above-mentioned deficiency; fluidisation heat exchanger after a kind of dry granulation blast-furnace slag is provided; to expect the technical problems such as in the solution prior art, the high temperature slag particle, at heat transfer process, the secondary caking easily occurs, and heat exchange is not thorough, and comprehensive heat exchange efficiency is low.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
Provided by the present invention is fluidisation heat exchanger after a kind of dry granulation blast-furnace slag, comprise fluidized-bed body, waste heat flue gas collector unit and cloth wind feed back unit, described cloth wind feed back unit is placed in the bottom of fluidized-bed body, waste heat flue gas collector unit is placed in the top of fluidized-bed body, and waste heat flue gas collector unit is for collecting waste heat flue gas that heat exchange obtains and by its output; The inside of described fluidized-bed body also is provided with for breaing up the multilayer overcurrent plate of slag particle, and any side of fluidized-bed body is provided with material inlet, and material inlet is arranged on the top of multilayer overcurrent plate; Described cloth wind feed back comprises wind-force generation device and many slag dropping tubes in unit, the bottom of cloth wind feed back unit is provided with discharge opening, many slag dropping tubes are arranged on the below of multilayer overcurrent plate, and be connected with the fluidized-bed body interior, for delivering near discharge opening by the slag particle after multilayer overcurrent plate, and a side of cloth wind feed back unit also is provided with air intake vent, the wind-force generation device is installed on air intake vent, make the inner generation in cloth wind feed back unit air-flow upwards by the wind-force generation device, and air-flow passes through fluidized-bed body and waste heat flue gas collector unit successively.
Further technical scheme is: described fluidized-bed body interior also is provided with filtering net, and filtering net is placed between material inlet and multilayer overcurrent plate, for the slag particle that filtration bonds together and volume is larger, and the side of fluidized-bed body also is provided with aperture of door, described aperture of door is placed in the top of filtering net.
Further technical scheme is: it is characterized in that: the cross section of described multilayer overcurrent plate is for being trilateral or being similar to trilateral, and layering is fixed on the inboard of fluidized-bed body, and is vertically the staggered form cellular structure of formation of arranging.
Further technical scheme is: described material inlet is level or the downward-sloping any side that is arranged on the fluidized-bed body, and near also being provided with for purging slag particle of material inlet makes its overfiren air port that is distributed in the fluidized-bed body interior, and overfiren air port is placed on the fluidized-bed body side of filtering net top.
Further technical scheme is: described waste heat flue gas collector unit comprises tapered gas skirt and turns to flue, and turns on flue fly-ash separator also is installed.
Further technical scheme is: described fly-ash separator is tornado dust collector, and it comprises the fly-ash separator body, is provided with air flow inlet, air stream outlet and ash port on the fly-ash separator body, and all is provided with the standpipe expansion joint on air flow inlet and ash port; It is described that to turn to the steering angle of flue be 90 degree.
Further technical scheme is: described cloth wind feed back also comprises air distribution plate in unit, air distribution plate is arranged on the below of multilayer overcurrent plate, described many slag dropping tubes pass air distribution plate and are placed in the below of air distribution plate, and the air distribution plate top also is provided with the blast cap of oblique perforate.
Further technical scheme is: also be provided with an inclined-plane tilted to the air intake vent direction in described cloth wind feed back unit, the length of many slag dropping tubes and this inclined-plane adapt, and the wind-force generation device that is arranged on the air intake vent place produces air-flow upwards by this inclined-plane; The side of described cloth wind feed back unit also is provided with the manhole device.
Further technical scheme is: described cloth wind feed back unit also is provided with tapered slag bucket, and slag bucket is placed in to the inclined-plane of air intake vent direction inclination and the below of many slag dropping tubes, described discharge opening is arranged on the bottom of slag bucket, and discharge valve is installed on discharge opening; Described wind-force generation device is gas blower.
Further technical scheme is: described fluidized-bed body, waste heat flue gas collector unit and cloth wind feed back unit are monoblock type, and are coated by the fluidized-bed housing.
Compared with prior art, one of beneficial effect of the present invention is: by the polynuclear plane of by multilayer overcurrent plate, in the fluidized-bed body interior, being arranged and forming, make slag particle can fully be broken up after entering the fluidized-bed body, prevent from heat transfer process occurring the secondary caking, also avoided slag particle that volume is larger other passage in blocking the fluidized-bed body simultaneously under filtering net and overfiren air port auxiliary; And utilize air to carry out heat exchange as intermediate medium, after heat exchange, by turning to flue that warm air is exported, recycle the waste heat of high temperature slag particle, thoroughly solved waste heat boiler equipment heating surface wear booster cause the slag particle heat exchange reclaim after in the middle of have the situation of moisture; And by cooperatively interacting between slag dropping tube, air distribution plate, slag bucket and overfiren air port; can realize slag particle is carried out to the heat exchange recovery according to different practical situation such as its granular size and speed of cooling speeds; fluidisation heat-exchange device structure after a kind of dry granulation blast-furnace slag provided by the present invention is simple simultaneously; be applicable to various types of blast-furnace slag heat exchange cooling; and be particularly suited for utilizing continuously the heat-exchanger rig in system to use as the continuous dry process waste heat of blast-furnace slag, range of application is wide.
The accompanying drawing explanation
Fig. 1 is for the one-piece construction schematic diagram of an embodiment of the present invention fluidisation heat exchanger is described;
Fig. 2 is for the cloth wind feed back modular construction schematic diagram of the another kind of embodiment of the present invention is described;
Fig. 3 is for the cyclone duster structure schematic diagram of the another kind of embodiment of the present invention is described.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further elaborated.
Fig. 1 shows the one-piece construction of a kind of form of the present invention; shown in Figure 1; the first embodiment of the present invention is the fluidisation heat exchanger after a kind of dry granulation blast-furnace slag; comprise fluidized-bed body 1, waste heat flue gas collector unit 2 and cloth wind feed back unit 3; and according to content illustrated in fig. 1; fluidized-bed body 1, waste heat flue gas collector unit 2 and cloth wind feed back unit 3 are all monoblock type, and are coated by the fluidized-bed housing.
Described cloth wind feed back unit 3 is placed in the bottom of fluidized-bed body 1, waste heat flue gas collector unit 2 is placed in the top of fluidized-bed body 1, and the effect of waste heat flue gas collector unit 2 is to carry out the heat energy trans-utilization for collecting the waste heat flue gas that heat exchange obtains and exporting them to other equipment, the inside of described fluidized-bed body 1 also is provided with multilayer overcurrent plate 11, the effect of this multilayer overcurrent plate 11 is that slag particle is broken up it in the process descended, be provided with material inlet 12 and enter and aforesaid slag particle is any side from fluidized-bed body 1, material inlet, because the position of 12 settings does not have particular requirement, only need to be arranged on it top of aforesaid multilayer overcurrent plate 11, comprise wind-force generation device and many slag dropping tubes 31 in described cloth wind feed back unit 3, the bottom of cloth wind feed back unit 3 is provided with discharge opening 32, many slag dropping tubes 31 are arranged on the below of multilayer overcurrent plate 11, and be connected with fluidized-bed body 1 inside, for delivering near discharge opening 32 by the slag particle after multilayer overcurrent plate 11, and a side of cloth wind feed back unit 3 also is provided with air intake vent 33, the wind-force generation device is installed on air intake vent 33, make the inner air-flow upwards that produces in cloth wind feed back unit 3 by the wind-force generation device, and air-flow passes through fluidized-bed body 1 and waste heat flue gas collector unit 2 successively.
Above-mentioned technical scheme is a comparatively embodiment on basis of the present invention, slag particle is after entering fluidized-bed body 1 by material inlet 12, be subject to the obstruction of multilayer overcurrent plate 11 in the process descended, make it be broken up, and at the wind-force generation device, produce under the effect of air-flow, the temperature of slag particle is fast-descending also, entering subsequently many slag dropping tubes 31 continues to descend, finally by discharge opening 32, discharged, the hot gas flow produced in the slag particle process of cooling the parts in waste heat flue gas collector unit 2 collect, be delivered to other the device in carry out heat energy utilization.
And on the basis of above-described embodiment, for preventing that slag particle is bonded together, perhaps the excessive slag particle of volume own is stuck in multilayer overcurrent plate 11 and can't descends, make the follow-up slag particle entered through material inlet 12 stop up, therefore as the above embodiment of the present invention preferably, also can do following improvement in the structure of above-described embodiment technical scheme, set up filtering net 13 in fluidized-bed body 1 inside, and filtering net 13 is placed between material inlet 12 and multilayer overcurrent plate 11, at first the slag particle entered through material inlet 12 like this drops on filtering net, through again fluidized-bed body 1 inside that being provided with multilayer overcurrent plate 11 after being filtered by filtering net.For forming supporting with filtering net 13, also aperture of door 14 need be set in the side of fluidized-bed body 1, described aperture of door 14 is placed in the top of filtering net 13, during slag particle that the purpose that aperture of door 14 is set too much is bonded together for having deposited on filtering net 13, volume is larger, open the slag particle on filtering net 13 is removed, can't enter again the inside of fluidized-bed body 1 with the slag particle that prevents from being entered by material inlet 12.Aforementioned mentioning increased the structure of filtering net 13 with aperture of door 14, can be used as the present invention preferred another embodiment relative to above-mentioned basic embodiment.
Continuation is in conjunction with the technical scheme of above-mentioned two embodiment, the multilayer overcurrent plate 11 wherein mentioned is structures that fluidized-bed body 1 internal main is wanted, also to break up slag particle in the present invention and delay its lowering speed to reach one of primary structure fully dispelled the heat by air-flow, structure for multilayer overcurrent plate 11, preferred a kind of structure formation is that its cross section is set to trilateral or is similar to leg-of-mutton shape, on the medial surface that is fixed on fluidized-bed body 1 of layering, by vertical staggered form, arrange and then form cellular structure.The structure of aforesaid preferred multilayer overcurrent plate 11 can combine with the technical scheme of above-mentioned two embodiment, is configured to the embodiment that the present invention is more preferably.
When the fluidisation heat exchanger of contriver after the dry granulation blast-furnace slag by above-mentioned example structure tested, although find that it has solved and break up slag particle, and delay its lowering speed to manufacture fully heat radiation of air-flow realization by the wind-force generation device, and reclaim the technical problem such as heat, but because its one-piece construction need to reclaim the high-temperature flue gas air-flow to do the reason of his use, material inlet 12 can only be arranged on to the side of fluidized-bed body 1, therefore easily cause slag particle skewness when entering fluidized-bed body 1 inside in actual the use, multilayer overcurrent plate 11 local slag particles are by too intensive, and local slag particle is by too loose, therefore this situation be left to be desired for the present invention, the contriver provides following structure and improves aforesaid deficiency with expectation, be that described material inlet 12 is any side that level or downward-sloping form are arranged on fluidized-bed body 1, near and the overfiren air port 15 that also is provided with of material inlet 12, and overfiren air port 15 is placed on fluidized-bed body 1 side of filtering net 13 tops, the effect of overfiren air port 15 is the purging slag particle makes it be distributed in the inside of fluidized-bed body 1, and consider that pipeline is arranged and heat exchanger is installed the convenience of configuration, preferably overfiren air port 15 and material inlet 2 are arranged on to the same side of fluidized-bed body 1, and overfiren air port 15 is arranged and is inclined upwardly.
Fig. 2 shows a kind of preferred structure schematic diagram of cloth wind feed back of the present invention unit 3, shown in Figure 2, the wind-force generation device of mentioning except comprising above-described embodiment in cloth wind feed back unit 3, outside many slag dropping tubes 31 and discharge opening 32 and air intake vent 33, also comprise air distribution plate 34, air distribution plate 34 is arranged on the below of multilayer overcurrent plate 11, described many slag dropping tubes 31 pass air distribution plate 34 and are placed in the below of air distribution plate 34, and air distribution plate 34 tops also are provided with the blast cap 35 of oblique perforate, the air-flow that the acting as of blast cap 35 produces the wind-force generation device can make progress mobile smoothly by air distribution plate 34, slag particle enters many slag dropping tubes 31 inside, the purpose of blast cap 35 oblique perforates is for preventing that slag particle from entering blast cap 35 and stopping up.And wind-force generation device illustrated in fig. 2 is gas blower 4.
Simultaneously on above-mentioned cloth wind feed back unit 3 architecture basics, for the air-flow that makes side enter 3 inside, cloth wind feed back unit by air intake vent 33 is directly upwards flowed, the inside that is preferably in cloth wind feed back unit 3 arranges an inclined-plane 36 tilted to air intake vent 33 directions, the length of many slag dropping tubes 31 and this inclined-plane adapt, be that the air-flow made progress for auxiliary wind-force generation device generation that act as that many slag dropping tubes 31 down do not extend to over 36，Gai inclined-plane, this inclined-plane 36 impels through the slag particle of multilayer overcurrent plate cooling; The side of described cloth wind feed back unit 3 also is provided with manhole device 37, manhole device 37 effect is when heat exchanger breaks down, the maintainer can be entered and be overhauled by this hole, so manhole device 37 aperture arranges and will can meet the inside that the maintainer enters heat exchanger.
On the basis of above-mentioned cloth wind feed back unit 3 structures, the embodiment be more preferably for the present invention is, for converging to discharge opening 32 fast, the slag particle that many slag dropping tubes 31 are discharged discharged, also have additional tapered slag bucket 38 in cloth wind feed back unit 3, and slag bucket 38 is placed in to the inclined-plane 36 of air intake vent 33 directions inclinations and the below of many slag dropping tubes 31, discharge opening 32 is arranged on the bottom of slag bucket 38, and discharge valve 39 is installed on discharge opening 32, and not acting as when device does not make of discharge valve 39 can be closed discharge opening 32.
Shown in Figure 1 again, above-mentioned waste heat flue gas collector unit 2 comprises tapered gas skirt 21 and turns to flue 22, the gas skirt 21 of taper is conducive to converging of high-temperature flue gas, and turn on flue 22 fly-ash separator 23 also is installed, fly-ash separator 23 act as the dust of removing in the high-temperature flue gas air-flow that slag particle is cooling produced, export to facilitate the utilization of carrying out heat in other equipment to.
Fig. 3 shows the schematic diagram of a kind of preferred fly-ash separator structure of the present invention, shown in Figure 3, fly-ash separator 23 is tornado dust collector, it comprises fly-ash separator body 231, be provided with air flow inlet 232, air stream outlet 233 and ash port 234 on fly-ash separator body 231, and all be provided with standpipe expansion joint 235 on air flow inlet 232 and ash port 234; The effect of standpipe expansion joint 235 is to absorb swollen poor that the metal heat-expansion shrinkage causes.Be the fly-ash separator 23 that coordinates this structure simultaneously, more shown in Figure 1, the above-mentioned steering angle that turns to flue 22 is preferably 90 degree.
Also it should be noted that, more clear for what all parts can be set forth in the present invention, adopted the similar terms such as " ”,“ bottom, top " " top ", " below ", it should be interpreted as the relative position between described parts, and is not the absolute location on geometric meaning." embodiment ", " another embodiment ", " embodiment " that simultaneously spoken of in this manual, etc., the specific features, structure or the characteristics that refer in conjunction with this embodiment description are included at least one embodiment of the application's generality description.In specification sheets, a plurality of local appearance statement of the same race is not necessarily to refer to same embodiment.Furthermore, while in conjunction with arbitrary embodiment, describing a specific features, structure or characteristics, what advocate is to realize that in conjunction with other embodiment this feature, structure or characteristics also fall within the scope of the invention.
Although with reference to a plurality of explanatory embodiment of the present invention, invention has been described here, but, should be appreciated that, those skilled in the art can design a lot of other modification and embodiments, and these are revised and within embodiment will drop on the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to building block and/or the layout of subject combination layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes will be also obvious.
Claims (9)
1. the fluidisation heat exchanger after a dry granulation blast-furnace slag, comprise fluidized-bed body (1), waste heat flue gas collector unit (2) and cloth wind feed back unit (3), it is characterized in that: described cloth wind feed back unit (3) is placed in the bottom of fluidized-bed body (1), waste heat flue gas collector unit (2) is placed in the top of fluidized-bed body (1), and waste heat flue gas collector unit (2) is for the waste heat flue gas collecting heat exchange and obtain and by its output, the inside of described fluidized-bed body (1) also is provided with for breaing up the multilayer overcurrent plate (11) of slag particle, and any side of fluidized-bed body (1) is provided with material inlet (12), and material inlet (12) is arranged on the top of overcurrent plate (11), comprise wind-force generation device and many slag dropping tubes (31) in described cloth wind feed back unit (3), the bottom of cloth wind feed back unit (3) is provided with discharge opening (32), many slag dropping tubes (31) are arranged on the below of multilayer overcurrent plate (11), and be connected with fluidized-bed body (1) inside, for delivering near discharge opening (32) by the slag particle after multilayer overcurrent plate (11), and a side of cloth wind feed back unit (3) also is provided with air intake vent (33), air intake vent is equipped with the wind-force generation device on (33), make the inner air-flow upwards that produces in cloth wind feed back unit (3) by the wind-force generation device, and air-flow passes through fluidized-bed body (1) and waste heat flue gas collector unit (2) successively, the cross section of described multilayer overcurrent plate (11) is trilateral or is similar to trilateral, and layering is fixed on the inboard of fluidized-bed body (1), and is vertically staggered form and arranges and form cellular structure.
2. the fluidisation heat exchanger after dry granulation blast-furnace slag according to claim 1; it is characterized in that: described fluidized-bed body (1) inside also is provided with filtering net (13); and filtering net (13) is placed between material inlet (12) and multilayer overcurrent plate (11); for the slag particle that filtration bonds together and volume is larger; and the side of fluidized-bed body (1) also is provided with aperture of door (14), described aperture of door (14) is placed in the top of filtering net (13).
3. the fluidisation heat exchanger after dry granulation blast-furnace slag according to claim 1 and 2; it is characterized in that: described material inlet (12) is level or the downward-sloping any side that is arranged on fluidized-bed body (1); and near also being provided with for purging slag particle of material inlet (12) makes it be distributed in the inner overfiren air port (15) of fluidized-bed body (1), and overfiren air port (15) is placed on fluidized-bed body (1) side of filtering net (13) top.
4. the fluidisation heat exchanger after dry granulation blast-furnace slag according to claim 1 and 2; it is characterized in that: described waste heat flue gas collector unit (2) comprises tapered gas skirt (21) and turns to flue (22), and turns on flue (22) fly-ash separator (23) also is installed.
5. the fluidisation heat exchanger after dry granulation blast-furnace slag according to claim 4, it is characterized in that: described fly-ash separator (23) is tornado dust collector, it comprises fly-ash separator body (231), be provided with air flow inlet (232), air stream outlet (233) and ash port (234) on fly-ash separator body (231), and all be provided with standpipe expansion joint (235) on air flow inlet (232) and ash port (234); It is described that to turn to the steering angle of flue (22) be 90 degree.
6. the fluidisation heat exchanger after dry granulation blast-furnace slag according to claim 1 and 2; it is characterized in that: also comprise air distribution plate (34) in described cloth wind feed back unit (3); air distribution plate (34) is arranged on the below of multilayer overcurrent plate (11); described many slag dropping tubes (31) pass air distribution plate (34) and are placed in the below of air distribution plate (34), and air distribution plate (34) top also is provided with the blast cap (35) of oblique perforate.
7. the fluidisation heat exchanger after dry granulation blast-furnace slag according to claim 6, it is characterized in that: also be provided with an inclined-plane (36) tilted to air intake vent (33) direction in described cloth wind feed back unit (3), the length of many slag dropping tubes (31) and this inclined-plane (36) adapt, and are arranged on the wind-force generation device that air intake vent (33) locates and produce air-flow upwards by this inclined-plane (36); The side of described cloth wind feed back unit (3) also is provided with manhole device (37).
8. the fluidisation heat exchanger after dry granulation blast-furnace slag according to claim 7, it is characterized in that: described cloth wind feed back unit (3) also is provided with tapered slag bucket (38), and slag bucket (38) is placed in to the inclined-plane (36) of air intake vent (33) direction inclination and the below of many slag dropping tubes (31), described discharge opening (32) is arranged on the bottom of slag bucket (38), and on discharge opening (32), discharge valve (39) is installed; Described wind-force generation device is gas blower (4).
9. the fluidisation heat exchanger after dry granulation blast-furnace slag according to claim 1; it is characterized in that: described fluidized-bed body (1), waste heat flue gas collector unit (2) and cloth wind feed back unit (3) are monoblock type, and are coated by the fluidized-bed housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101754933A CN102719579B (en) | 2012-05-31 | 2012-05-31 | Fluidized heat exchange device after slag of dry type granulating blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101754933A CN102719579B (en) | 2012-05-31 | 2012-05-31 | Fluidized heat exchange device after slag of dry type granulating blast furnace |
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| CN103940251A (en) * | 2014-05-14 | 2014-07-23 | 许宁 | Slag dry quenching waste heat recycling device and method |
| CN106969630B (en) * | 2017-04-13 | 2023-07-14 | 张金波 | Vertical fluidized bed of alumina roasting furnace and powder flow cooling method |
| CN111074021A (en) * | 2019-12-04 | 2020-04-28 | 西安交通大学 | Uniform flow field air outlet structure for liquid slag dry-type centrifugal granulation system |
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| JP4353706B2 (en) * | 2003-02-04 | 2009-10-28 | Ｊｆｅスチール株式会社 | Process for producing milled slag and facility for producing milled slag |
| CN100453903C (en) * | 2006-08-10 | 2009-01-21 | 上海锅炉厂有限公司 | Method for cooling bottom dregs at fluid bed boiler |
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| CN101921884B (en) * | 2009-06-12 | 2012-06-27 | 中国科学院过程工程研究所 | Blast furnace slag dry-type sensible heat recovery system and production process |
| CN101660014A (en) * | 2009-09-24 | 2010-03-03 | 中钢集团鞍山热能研究院有限公司 | Molten blast furnace slag sensible heat recovery method and device |
| CN101871025B (en) * | 2010-06-24 | 2012-12-26 | 北京神风创新热能技术有限公司 | Metallurgical molten slag dry-type processing device and processing method thereof |
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| CN202658170U (en) * | 2012-05-31 | 2013-01-09 | 四川川润股份有限公司 | Fluidization heat exchanger device for dry-type granulated blast-furnace slag |
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Application publication date: 20121010 Assignee: Sichuan CRUN Power Equipment Co., Ltd. Assignor: Sichuan Chuanrun Co., Ltd. Contract record no.: 2016510000014 Denomination of invention: Fluidized heat exchange device after slag of dry type granulating blast furnace Granted publication date: 20131218 License type: Exclusive License Record date: 20160805 |
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