CN204727930U - A kind of air-cooling apparatus of ventilative material - Google Patents
A kind of air-cooling apparatus of ventilative material Download PDFInfo
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- CN204727930U CN204727930U CN201520363169.3U CN201520363169U CN204727930U CN 204727930 U CN204727930 U CN 204727930U CN 201520363169 U CN201520363169 U CN 201520363169U CN 204727930 U CN204727930 U CN 204727930U
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- hoisting bracket
- cooling apparatus
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Abstract
The utility model relates to the cooling technology field of the material with ventilation property, provides a kind of air-cooling apparatus of ventilative material, comprises the shell overhead guard, hoisting bracket and the material tower that longitudinally coaxially set gradually.This device controls discharge velocity by arranging control valve in discharge gate position, and then reaches the object of the thickness controlling ventilative material in material tower, ensures that ventilative material fully contacts with cooling gas with this, and then ensures ventilative material cooling fully.On this basis, material cooling being ensured fully, without the need to arranging too high by tower body, thus avoiding the problem of ventilative material efflorescence.In addition, the claw that there is relative movement between ventilative material is provided with in material tower, can ensure that ventilative material is spread out by claw after blanking point blanking pave by rationally arranging described claw, and then the problem that the resistance avoiding the cooling gas that caused by cloth inequality to be subject to through the bed of material is uneven.And this device is vertically arranged, thus floor space is little.
Description
Technical field
The utility model relates to the cooling technology field of the material with ventilation property, particularly relates to a kind of air-cooling apparatus of ventilative material, is more specially the air-cooling apparatus being applicable to direct-reduced iron.
Background technology
Iron And Steel Industry is mainstay of the national economy industry, and its energy-output ratio is large, and pollutant discharge amount is also large, while providing high-quality steel to society, also brings great effect to physical environment.Wherein, iron and steel enterprise's energy consumption and waste discharge mainly concentrate on system for blast furnace ironmaking, and therefore people have carried out the research of a large amount of non-blast furnace ironmaking novel process, and make some progress.Wherein developing the swiftest and the most violent is Direct Reduction Technology and smelting reduction technology.
Wherein, Direct Reduction Technology refers to coal, gas or liquid fuel for the energy and reductive agent, and lower than the ironmaking production technique under temperature of fusion, reduction of iron ore being become solid iron, its product is direct-reduced iron (i.e. DRI, direct reduced iron), also claim sponge iron.This product, without fusing, still keeps ore profile, because reduction oxygen loss forms a large amount of pore, examines under a microscope likeness in form sponge and gains the name.Direct-reduced iron iron-holder is generally more than 90%, and chemical composition stability, foreign matter content is low, is not only the substitute of steel scrap, the steel of production high-quality especially, the indispensable raw material of Clean Steel.In addition, make steel with addition of direct-reduced iron be control, the Main Means of harmful element in dilution steel.Therefore, direct-reduced iron improves steel product quality, increase rolling shapes, the indispensable raw material of the development compact flow process of ferrous metallurgy.
Cooling is an extremely important link in direct-reduction process for making iron, the roasting of direct-reduction ferrous products come out of the stove after temperature very high, be about 1100 DEG C.For ensureing that belt function carries out conveying delivery to direct-reduced iron, less than 150 DEG C need be cooled to.Be different from general metallurgical product, high-temperature direct reduced iron goods, when running into sky G&W, can produce vigorous oxidation burning, the iron restored be become metal oxide again, thus causes finished metal rate significantly to reduce and Pulverization ratio significantly increases.
The method of cooling of current direct-reduced iron has: immersion cooling, the cooling of interior spray water cooling cylinder and the cooling of outer spray water cooling cylinder.Immersion cooling is cooling of being soaked in tank by direct-reduced iron, and the direct-reduced iron of high temperature drops into the danger forming bumping in water.In addition, immersion cooling and the cooling of interior spray water cooling cylinder all exist that Pulverization ratio is high, yield rate is low, water content is high needs the problems such as redrying, easily generation secondary oxidation.The cooling of outer spray water cooling cylinder carries out heat exchange by cooling barrel due to heat-eliminating medium, and rate of heat exchange is lower, the cooling water that needs consumption a large amount of, energy consumption are high.And also all there is based on the refrigerating unit of the multiple direct-reduced iron of these three kinds of method and technology personnel propositions the defect caused based on aforesaid method.Further, all there is the problem that cannot utilize waste heat in above-mentioned three kinds of methods.
In view of this, application number is that the patent of 201110346488.X is proposed a kind of rare gas element that uses and carried out the device cooled by thermopnore.The thermopnore that this device sets up multilayer to turn back in a straight tube erect, direct-reduced iron relies on self gravitation fold return motion from top to down, and rare gas element enters cylindrical shell from bottom, discharges from top through after multilayer thermopnore.This device direct-reduced iron height fall is large, and Pulverization ratio is higher.
Utility model content
(1) technical problem that will solve
The technical problems to be solved in the utility model is just to provide a kind of ventilative material air-cooling apparatus, be convenient to reclaim the waste heat of material, and material Pulverization ratio is low.When this ventilative material air-cooling apparatus is applicable to the cooling of direct-reduced iron, can be convenient on the low basis of waste heat recovery, material Pulverization ratio, the shortcoming that avoid soaking cooling, the cooling of interior spray water cooling cylinder and outer spray water cooling cylinder cooling technology exist.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of air-cooling apparatus of ventilative material, comprises the shell overhead guard, hoisting bracket and the material tower that longitudinally coaxially set gradually; Described shell overhead guard is provided with opening for feed and venting port; Described hoisting bracket is connected with rotary drive unit, and makes between described hoisting bracket and described shell overhead guard, and relatively rotates along self longitudinal axis center between described hoisting bracket and described material tower; Described hoisting bracket is fixedly connected with the claw for the ventilative material in even described material tower; The bottom of described material tower is provided with discharge gate and inlet mouth; Described discharge gate connection control valve.
Preferably, described material tower comprises and holds body and discharge bin; Described discharge bin is along forming described discharge gate away from described accommodation body direction adduction, and described inlet mouth is positioned on the sidewall of described discharge bin.
Preferably, described discharge bin is taper or reverse pyramid.
Preferably, the periphery of described discharge bin is provided with the ring-shaped ventilation pipeline of the horizontal direction coaxial with described accommodation body, and described ring-shaped ventilation pipeline is connected with the described inlet mouth on described discharge bin by radial passage.
Preferably, described radial passage is many and circumference along described ring-shaped ventilation pipeline is uniformly distributed; The quantity of described discharge bin and described ring-shaped ventilation pipeline is two, and two described ring-shaped ventilation pipelines are connected with same aeration equipment.
Preferably, described claw is uniformly distributed respectively on multiple concentric(al) circless of described accommodation body interior, and described concentric(al) circles is concentric with described accommodation body, and in the radial direction of described accommodation body, the angle of adjacent described claw is contrary.
Preferably, between described shell overhead guard and described hoisting bracket, and be provided with hydraulic seal unit between described hoisting bracket and described material tower.
Preferably, described control valve is multiple rotary seal valve of series connection.
Preferably, the side wall perimeter of described hoisting bracket is extended with supporting track, and described supporting track is arranged on erecting stage by support roller; Described hoisting bracket under the driving of described rotary drive unit around own axis.
Preferably, described rotary drive unit is rotary drive motor, and described rotary drive motor connects described hoisting bracket by speed reduction unit, transmitting gear successively.
(3) beneficial effect
The technical solution of the utility model has the following advantages: the air-cooling apparatus of ventilative material of the present utility model, discharge velocity is controlled by arranging control valve in discharge gate position, and then reach the object of the thickness controlling ventilative material in material tower, ensure that ventilative material fully contacts with cooling gas with this, and then ensure ventilative material cooling fully.On this basis, material cooling being ensured fully, without the need to arranging too high by tower body, thus avoiding the problem of ventilative material efflorescence.In addition, the claw that there is relative movement between ventilative material is provided with in material tower, can ensure that ventilative material is spread out by claw after blanking point blanking pave by rationally arranging described claw, and then the problem that the resistance avoiding the cooling gas that caused by cloth inequality to be subject to through the bed of material is uneven.And this device is vertically arranged, thus floor space is little.
In preferred version of the present utility model, material tower comprises and holds body and discharge bin, and discharge bin is taper or reverse pyramid, the horizontal annular breather line coaxial with described accommodation body is provided with in the periphery of discharge bin, and in discharge bin, inject cooling gas from all directions by radial passage, thus reach the object of even air feed.
In another preferred version of the present utility model, between shell overhead guard and hoisting bracket, and between hoisting bracket and material tower, adopt hydraulic seal unit to seal, thus improve the stopping property of device, solve the problem of the secondary oxidation of the direct-reduced iron brought in Air infitration material storing cavity.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the air-cooling apparatus of ventilative material of the present utility model;
Fig. 2 is the cross-sectional schematic at A-A place in Fig. 1;
Fig. 3 is the cross-sectional schematic at B-B place in Fig. 1;
In figure: 1, opening for feed; 2, venting port; 3, shell overhead guard; 4, hoisting bracket; 5, tower is expected; 6, claw; 7, ring-shaped ventilation pipeline; 8, rotary seal valve; 9, discharge bin; 10, hydraulic seal unit; 11, supporting track; 12, support roller; 13, transmitting gear; 14, speed reduction unit; 15, rotary drive motor; 16, erecting stage; 17, inlet mouth; 18, discharge gate; 19, radial passage.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples for illustration of the utility model, but can not be used for limiting scope of the present utility model.
In description of the present utility model, it should be noted that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " vertically ", " level ", " top ", " end ", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship; be only the utility model and simplified characterization for convenience of description; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.
Without loss of generality, the present embodiment is described for the air-cooling apparatus being applicable to direct-reduced iron.Should be understood that, the air-cooling apparatus of the present embodiment can also be applicable to the cooling that other exists the ventilative material of background technology associated problem, the especially bulk material such as particulate state, bulk.
The air-cooling apparatus of the ventilative material of the present embodiment, comprises the shell overhead guard 3, hoisting bracket 4 and the material tower 5 that longitudinally coaxially set gradually.The object wherein arranging hoisting bracket 4 is describing in detail in follow-up, first needs to be described in detail the structure of shell overhead guard 3 and material tower 5 herein.
Refer to accompanying drawing 1, shell overhead guard 3 is provided with opening for feed 1, after direct-reduced iron enters into material tower 5 by described opening for feed 1, the discharge gate 18 eventually through material tower 5 bottom is discharged.Wherein, in order to control the direct-reduced iron in material tower 5, the discharge gate 18 of the present embodiment is connected with control valve, is controlled the flow velocity of direct-reduced iron in material tower 5 by control valve, and then controls direct-reduced iron thickness in material tower 5.And the direct-reduced iron bed of material of adequate thickness can produce certain resistance to cooling gas, therefore can ensure that direct-reduced iron fully contacts with cooling gas.On this basis, direct-reduced iron cooling being ensured fully, without the need to arranging too high by tower body, thus avoiding the problem of ventilative material efflorescence.And this device is vertically arranged, thus floor space is little.Wherein, the selection of control valve determines according to its effect that will realize, and preferably but not limited to the rotary seal valve 8 of multiple series connection, selects Double layer rotating seal valve 8 herein.
Be deposited in blanking point than being easier to after entering material tower 5 based on direct-reduced iron by opening for feed 1, the present embodiment is expect to be provided with in tower 5 can the claw 6 of homogeneous material.Particularly, between shell overhead guard 3 and material tower 5, be coaxially arranged with hoisting bracket 4, and hoisting bracket 4 be fixedly connected with the claw 6 for the direct-reduced iron in even described material tower 5.Obviously, claw 6 will realize the function of homogeneous material, and the direct-reduced iron in tower 5 produces certain movement to need it relatively to expect.In view of this, hoisting bracket 4 is connected with rotary drive unit, and makes between described hoisting bracket 4 and described shell overhead guard 3, and relatively rotate along self longitudinal axis center between described hoisting bracket 4 and described material tower 5.Wherein a kind of feasible mode is, the side wall perimeter of hoisting bracket 4 is extended with supporting track 11, and described supporting track 11 is arranged on erecting stage 6 by support roller 12, and around own axis under the driving of described rotary drive unit.Preferably but be not necessary for steel platform, and other structure of air-cooling apparatus of the ventilative material of the present embodiment also can realize fixing erecting stage 6 wherein by this steel platform.In addition, described rotary drive unit is preferably rotary drive motor 15, and described rotary drive motor 15 connects described hoisting bracket 4 by speed reduction unit 14, transmitting gear 13 successively.
On this basis, can ensure that direct-reduced iron is spread out by claw 6 after blanking point blanking pave by rationally arranging claw 6, and then the problem that the resistance avoiding the cooling gas that caused by cloth inequality to be subject to through the bed of material is uneven.Wherein a kind of feasible mode is, claw 6 is uniformly distributed on multiple circles concentric with material tower 5 cross section of material tower 5 inside, refer to Fig. 2, and in the radial direction of described material tower 5, the angle of adjacent described claw 6 is contrary.Wherein it should be noted that, " radial direction of material tower 5 " is the primary structure based on material tower 5, does not get rid of the situation that material tower 5 comprises some not rounded Slipped Clove Hitch structures.Preferably four groups of claws 6 are set along in the radial direction of material tower 5 in the present embodiment, wherein often organize claw 6 and be positioned at circumferentially same.When hoisting bracket 4 rotates, four groups of claws 6 are driven to be rotated together.The direct-reduced iron of high temperature is stirred evenly mixing under the effect of claw 6, and the bed of material simultaneously piled up is tied, and then increases the ventilation property of material.
Wherein it should be noted that in order to avoid the claw 6 on hoisting bracket 4 interferes blanking in rotation process, preferred claw 6 and opening for feed 1 are in staggered distribution on the cross section of material tower 5.
In order to cool the direct-reduced iron in material tower 5, be provided with inlet mouth 17 in the bottom of material tower 5.Cooling gas enters into material tower 5 by this inlet mouth 17 and cools direct-reduced iron, and discharges eventually through the venting port 2 that shell overhead guard 3 is offered.
In the present embodiment, in order to realize the object of even air feed, material tower 5 can comprise and hold body and discharge bin 9, obvious accommodation body is hollow cylinder, and discharge bin 9 is along forming described discharge gate 18 away from described accommodation body direction adduction, described inlet mouth 17 is positioned on the sidewall of described discharge bin 9.
Further, discharge bin 9 is set to taper or the reverse pyramid of rule by the present embodiment.The horizontal annular breather line 7 coaxial with described accommodation body is provided with in the periphery of discharge bin 9.Wherein it should be noted that the axis of horizontal annular breather line 7 refers to the straight line longitudinally through described circle ring center.Described ring-shaped ventilation pipeline 7 is connected with the described inlet mouth 17 on described discharge bin 9 by radial passage 19.When being distributed with many radial passages 19 along the circumference of described ring-shaped ventilation pipeline 7, ring-shaped ventilation pipeline 7 can inject cooling gas from all directions simultaneously in discharge bin 9.The circumference of four radial passages 19 annularly breather line 7 is adopted to be uniformly distributed herein.
In addition, the quantity of feed bin can be arranged to multiple, thus the quantity of ring-shaped ventilation pipeline 7 corresponding with it is also multiple, specifically can arrange as required, and multiple ring-shaped ventilation pipeline 7 can be connected with same aeration equipment simultaneously.Adopt discharge bin 9 to be taper in the present embodiment and quantity is the situation of two, refer to Fig. 3.
In order to avoid direct-reduced iron generation secondary oxidation, should as far as possible by direct-reduced iron and extraneous isolation.In view of this, between the shell overhead guard 3 of the present embodiment and hoisting bracket 4, and be provided with hydraulic seal unit 10 between hoisting bracket 4 and material tower 5.Obviously this hydraulic seal unit 10 is under the prerequisite of not interfering hoisting bracket 4 to rotate, achieves between shell overhead guard 3 and hoisting bracket 4, and hoisting bracket 4 and to expect between tower 5 in circumferential direction sealing.
When the air-cooling apparatus of the present embodiment is used for the cooling of direct-reduced iron, first the direct-reduced iron of about 1100 DEG C is entered material tower 5 from opening for feed 1 by Double layer rotating seal valve 8, material tower 5 to drop on discharge bin 9 and to pile up.Start rotary drive motor 15, it drives hoisting bracket 4 to rotate by speed reduction unit 14, transmitting gear 13, contacts bottom hoisting bracket 4 with bottom the different claw 6 of four groups of rotation directions with bed of material top.By the rotation of claw 6, the surface material be deposited in material tower 5 is tied, and is screwed to different claws 6 and mixes mixing, ensure that the homogeneity of cloth, thus ensure that the resistance uniformity of cooling draught.The direct-reduced iron of high temperature is after overcooling, and discharged by Double layer rotating seal valve 8 bottom discharge bin 9, final outflow temperature is lower than 150 DEG C.
While injection direct-reduced iron, rare gas element enters radial passage 19 after ring-shaped ventilation pipeline 7, and injects material tower 5 by inlet mouth 17.While rare gas element moves upward, it cools the direct-reduced iron be deposited in material tower 5, after abundant heat exchange, discharges from venting port 2.Rare gas element after heat exchange carries out waste heat recovery through the laggard waste heat boiler of dedusting, then enters refrigerating unit after being pressurizeed by recirculation blower and recycle.Adopt rare gas element to cool direct-reduced iron, avoid direct-reduced iron and contact with air or water in process of cooling, solve that direct-reduced iron cooling efficiency is not high, secondary oxidation and contain water problem.High temperature inert gas carries out waste heat recovery through the laggard waste heat boiler of dedusting, has saved the energy.
Above embodiment only for illustration of the utility model, but not to restriction of the present utility model.Although be described in detail the utility model with reference to embodiment, those of ordinary skill in the art is to be understood that, various combination, amendment or equivalent replacement are carried out to the technical solution of the utility model, do not depart from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of right of the present utility model.
Claims (10)
1. an air-cooling apparatus for ventilative material, is characterized in that, comprises the shell overhead guard, hoisting bracket and the material tower that longitudinally coaxially set gradually; Described shell overhead guard is provided with opening for feed and venting port; Described hoisting bracket is connected with rotary drive unit, and makes between described hoisting bracket and described shell overhead guard, and relatively rotates along self longitudinal axis center between described hoisting bracket and described material tower; Described hoisting bracket is fixedly connected with the claw for the ventilative material in even described material tower; The bottom of described material tower is provided with discharge gate and inlet mouth; Described discharge gate connection control valve.
2. the air-cooling apparatus of ventilative material according to claim 1, is characterized in that, described material tower comprises and holds body and discharge bin; Described discharge bin is along forming described discharge gate away from described accommodation body direction adduction, and described inlet mouth is positioned on the sidewall of described discharge bin.
3. the air-cooling apparatus of ventilative material according to claim 2, is characterized in that, described discharge bin is taper or reverse pyramid.
4. the air-cooling apparatus of ventilative material according to claim 3, it is characterized in that, the periphery of described discharge bin is provided with the ring-shaped ventilation pipeline of the horizontal direction coaxial with described accommodation body, and described ring-shaped ventilation pipeline is connected with the described inlet mouth on described discharge bin by radial passage.
5. the air-cooling apparatus of ventilative material according to claim 4, is characterized in that, described radial passage is many and circumference along described ring-shaped ventilation pipeline is uniformly distributed; The quantity of described discharge bin and described ring-shaped ventilation pipeline is two, and two described ring-shaped ventilation pipelines are connected with same aeration equipment.
6. the air-cooling apparatus of ventilative material according to claim 2, it is characterized in that, described claw is uniformly distributed respectively on multiple concentric(al) circless of described accommodation body interior, described concentric(al) circles is concentric with described accommodation body, and in the radial direction of described accommodation body, the angle of adjacent described claw is contrary.
7. the air-cooling apparatus of ventilative material according to claim 1, is characterized in that, between described shell overhead guard and described hoisting bracket, and is provided with hydraulic seal unit between described hoisting bracket and described material tower.
8. the air-cooling apparatus of ventilative material according to claim 1, is characterized in that, described control valve is multiple rotary seal valve of series connection.
9. the air-cooling apparatus of ventilative material according to claim 1, is characterized in that, the side wall perimeter of described hoisting bracket is extended with supporting track, and described supporting track is arranged on erecting stage by support roller; Described hoisting bracket under the driving of described rotary drive unit around own axis.
10. the air-cooling apparatus of ventilative material according to claim 1, is characterized in that, described rotary drive unit is rotary drive motor, and described rotary drive motor connects described hoisting bracket by speed reduction unit, transmitting gear successively.
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| CN201520363169.3U CN204727930U (en) | 2015-05-29 | 2015-05-29 | A kind of air-cooling apparatus of ventilative material |
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| CN201520363169.3U CN204727930U (en) | 2015-05-29 | 2015-05-29 | A kind of air-cooling apparatus of ventilative material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267019A (en) * | 2016-12-30 | 2018-07-10 | 中冶长天国际工程有限责任公司 | A kind of vertical sinter cooler and sinter cooling means |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267019A (en) * | 2016-12-30 | 2018-07-10 | 中冶长天国际工程有限责任公司 | A kind of vertical sinter cooler and sinter cooling means |
| CN108267019B (en) * | 2016-12-30 | 2023-12-29 | 中冶长天国际工程有限责任公司 | Vertical sinter cooler and sinter cooling method |
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