CN104451140A - Vertical cooling kiln - Google Patents
Vertical cooling kiln Download PDFInfo
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- CN104451140A CN104451140A CN201310419503.8A CN201310419503A CN104451140A CN 104451140 A CN104451140 A CN 104451140A CN 201310419503 A CN201310419503 A CN 201310419503A CN 104451140 A CN104451140 A CN 104451140A
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Abstract
The invention discloses a vertical cooling kiln. The vertical cooling kiln comprises 1, a kiln body with an inner cavity, wherein the top of the kiln body is provided with a material receiving hopper, the bottom of the kiln body is provided with a discharge outlet and the upper part of the kiln body is provided with an air outlet, 2, a feeding Venturi tube which extends into the inner cavity of the kiln body from the material receiving hopper, 3, an annular air inlet duct which is arranged at the periphery of the kiln body and is provided with an air inlet, and 4, an air register which is arranged at the lower part of the inner cavity of the kiln body and above the discharge outlet, is provided with an air distribution outlet, is communicated with the annular air inlet duct and realizes air distribution in the inner cavity of the kiln body by the air distribution outlet. The vertical cooling kiln solves the problems of large air leakage amount and low heat recovery efficiency of the existing cooling device, greatly improves agglomerate sensible heat recovery efficiency, reduces blower fan energy consumption, has a simple and compact structure, a small floor space, a low investment and less equipment maintenance workload and realizes energy saving and emission reduction.
Description
Technical field
The present invention relates to a kind of refrigerating unit, particularly relate to a kind of refrigerating unit for heat sinter.
Background technology
The agglomerate cooling of existing domestic steel industry mostly adopts following three kinds of types of cooling: one is flat cooling, and two is belt coolings, and three is annular coolings.The common feature of these types of cooling is placed in by heat sinter in the carrier (such as car, groove) of motion, by the mode of exhausting or air blast, wind (or being called airflow) is passed through in heat sinter space, realize the heat exchange of airflow and heat sinter, reach the object of cooling agglomerate.
Because existing heat sinter carrier (such as car, groove) is kept in motion, the refrigerating unit of existing heat sinter usually effectively cannot ensure the omnidistance stopping property of heat sinter process of cooling, this just makes agglomerate process of cooling carry out in semi closed or open environment, and then cause the cooling air quantity of process of cooling large, wind-warm syndrome after heat exchange is lower, cannot realize the waste heat recovery of full blast amount, cause sintering mine sensible heat recovery utilization rate not high, the energy consumption of blower fan is also larger.Also have some heat sinter refrigerating unit seal structure complex, cause manufacturing cost and cost of equipment maintenance all high.
Therefore, existing agglomerate cooling apparatus have bulky, invest the shortcoming that high, energy consumption is large, maintenance of the equipment workload is large, inleakage is large and heat recovery efficiency is low.
Summary of the invention
The object of this invention is to provide a kind of vertical cooling kiln, this vertical cooling kiln can make heat sinter and gas carry out heat exchange efficiently in a closed space, reach best heat transfer boundary condition, thus realize the cooling of agglomerate, and improve the organic efficiency of heat sinter sensible heat to greatest extent, reduce fan energy consumption simultaneously, thus reach the object of energy-saving and emission-reduction further.
To achieve these goals, the invention provides a kind of vertical cooling kiln, it comprises:
Have the kiln body of internal cavity, its top is provided with hopper, and the bottom of kiln body is provided with discharge port, and the top of described kiln body has air outlet;
Charging trunnion, it extends in the internal cavity of kiln body from described hopper;
Annular air inlet duct, it is arranged at the periphery of described kiln body, and described annular air inlet duct is provided with blast inlet;
Air distributor, it is located at the described bottom of kiln body internal cavity, the top of discharge port, and described air distributor has air distribution outlet, described air distributor and annular air inlet duct conducting, and by air distribution outlet to kiln body internal cavity air distribution.
Operationally, heat sinter is by described hopper via charging trunnion, and free-falling in kiln body under gravity, is then deposited in kiln body for above-mentioned vertical cooling kiln.Cooling gas enters annular air inlet duct from the blast inlet annular air inlet duct, then through air distributor air distribution, finally enters kiln body from the air distribution outlet of air distributor.The cooling gas entering kiln body runs from bottom to top, heat exchange is carried out with heat sinter in operational process, now heat sinter release of heat cooling, cooling gas then absorbs heat and heats up, finally rise in the hot air cavity that the charge level piled up by heat sinter and kiln body formed, finally discharge from the air outlet on kiln body top.In this course, heat sinter fully contacts with the cooling gas of rising and continues to carry out heat exchange.Heat sinter, when falling to bottom kiln body, is piled up gradually and clogs between air distributor and discharge port, thus formation agglomerate stock column has isolated the internal cavity of discharge port and kiln body, can effectively prevent cooling gas from escaping.In like manner, in charging trunnion, remain that one section of stock column exists, can stop that high-temperature gas in kiln body escapes and the entering of flows outside air, thus make whole vertical cooling kiln operationally have good stopping property.
In the technical program, the size of kiln body and volume can be determined according to the output of heat sinter by those skilled in the art.
Further, in vertical cooling kiln of the present invention, described kiln body comprises shell and is located at least one insulation wear-resistant liner layer in shell.Insulation wear-resistant liner layer is set and can stops that heat sinter falls friction to the wearing and tearing of inner shell cavity and thermal stresses damage, improve the work-ing life of vertical cooling kiln, it can also prevent the outer of heat sinter heat in kiln body from faling apart simultaneously, is conducive to the recycling of heat energy.
Preferably, in vertical cooling kiln of the present invention, described hopper is provided with hermatic door, to open or close the opening for feed of hopper.The arranging of hermatic door can stop that high-temperature gas in kiln body escapes and the entering of extraneous air further.
Certainly, technical solutions according to the invention also can not arrange hermatic door, when not arranging hermatic door, the one section of stock column remained in charging trunnion can stop that high-temperature gas in kiln body escapes and the entering of extraneous air, and can be prevented high-temperature gas in kiln body from escaping and the entering of extraneous air in addition by the pressure controlling the hot air cavity between the charge level of heat sinter and kiln body.
Further, in vertical cooling kiln of the present invention, described annular air inlet duct is connected with air-blast system by blast inlet.The cooling gas flow that air-blast system provides should be little as much as possible when ensureing certain speed of cooling, to ensure that the air themperature after heat exchange is high as much as possible.
Further, in vertical cooling kiln of the present invention, described discharge port direction is also provided with dumper.Dumper is used for controlling to discharge from discharge port through overcooled agglomerate, enters in next step operation.
Alternatively, in vertical cooling kiln of the present invention, described air distributor comprise one in the middle part of air distributor, itself and described annular air inlet duct conducting.Cooling gas middle part bottom kiln body can be sent by middle part air distributor, contributes to being uniformly distributed of cooling gas.
Further, in above-mentioned vertical cooling kiln, above the air distribution outlet of described middle part air distributor, be provided with the blast cap preventing air distribution outlet from blocking.Arranging blast cap prevents heat sinter from blocking air distribution outlet.Blast cap can be the cap structure with certain taper, between top cover and air distribution outlet, there is gap, cooling gas is sent from the gap between air distribution outlet and top top cover thereof, and the heat sinter simultaneously dropped on blast cap can along the free landing under gravity of the conical surface of top cover.Certainly, in the technical program, blast cap also can have other structures, such as, can be the flat top cover be positioned at above air distribution outlet.
Further, in vertical cooling kiln of the present invention, be provided with the beam of extension between described middle part air distributor and kiln body, in beam, there is ventilation duct, the ventilation duct conducting of described middle part air distributor and beam, the ventilation duct of described beam and annular air inlet duct conducting.In such an implementation, middle part air distributor and annular air inlet duct pass through the beam conducting of hollow, and this beam can also be arranged on the support component in kiln body as middle part air distributor in addition.
Preferably, in vertical cooling kiln of the present invention, described air distributor also comprises an annular air distributor arranged along the circumference of kiln body, described annular air distributor has annular inner wall and annular outer wall, there is the gap as air distribution outlet, this gap and annular air inlet duct conducting between annular inner wall and annular outer wall.
Above-mentioned annular air distributor can independently be arranged, and also jointly can arrange with above-mentioned middle part air distributor and realize common air distribution.When being provided with annular air distributor and middle part air distributor at the same time, annular air distributor is connected with annular air inlet duct conducting respectively with middle part air distributor.
Further, in vertical cooling kiln of the present invention, described air outlet is connected with induced draught system.Induced draught system can add the design with the pressure functional controlling annular hot air cavity, thus the pressure in circular hot air chamber is effectively controlled.
Vertical cooling kiln of the present invention, owing to have employed technique scheme, make it compared with existing cooling apparatus, improve the stopping property of cooling apparatus, improve the heat exchange efficiency of heat sinter and cooling gas simultaneously, thus significantly improve the organic efficiency of sintering mine sensible heat, and reduce fan energy consumption, reach the object of energy-saving and emission-reduction.
In addition, vertical cooling kiln of the present invention is compared with existing cooling apparatus, and simple and compact equipment structure, take up an area few, invest low, maintenance of the equipment workload is few.
Accompanying drawing explanation
Fig. 1 is the structural representation of vertical cooling kiln of the present invention under a kind of embodiment.
Fig. 2 is the structural representation of the middle part air distributor of vertical cooling kiln of the present invention under a kind of embodiment.
Fig. 3 is the structural representation of the annular air distributor of vertical cooling kiln of the present invention under a kind of embodiment.
Embodiment
Below will be described in further details vertical cooling kiln of the present invention according to specific embodiment and Figure of description, but this explanation does not form inappropriate limitation of the present invention.
Fig. 1 shows the structure of vertical cooling kiln of the present invention under a kind of embodiment.As shown in Figure 1, this vertical cooling kiln comprises: the kiln body with internal cavity; The insulation wear-resistant liner layer 2 that this kiln body comprises steel shell 1 and is located in shell 1, as can be seen from the figure, this kiln body is right cylinder substantially, namely cross section is circular, in reverse taper bottom kiln body, certainly, in other embodiments of this case, kiln body also can be square main body, or other structures that those skilled in that art can expect; This kiln body top is provided with hopper 3, and hopper 3 is provided with hermatic door 9, to open or close the opening for feed 7 of hopper 3; Charging trunnion 4, it extends in the internal cavity of kiln body from hopper 3; The bottom of this kiln body is also provided with discharge port 8; The top of this kiln body has air outlet 12.In addition, in the present embodiment, the kiln body periphery of this vertical cooling kiln is also provided with the first annular air inlet duct 51 and the second annular air inlet duct 52, and wherein the first annular air inlet duct 51 is provided with the first blast inlet 101, second annular air inlet duct 52 and is provided with the second blast inlet 102.First annular air inlet duct 51 is connected with the conducting of annular air distributor 61, and the second annular air inlet duct 52 is connected with middle part air distributor 62 conducting.
Fig. 2 and Fig. 3 show further in the present embodiment respectively, the structure of middle part air distributor and annular air distributor.
As shown in Figure 1, Figure 2 and Figure 3, in the present embodiment, the top of the bottom of kiln body internal cavity, discharge port 8 is located at by the air distributor of vertical cooling kiln, and air distributor 6 has air distribution outlet, to make the cooling gas sent through air distribution outlet according to the direction flowing shown in Fig. 1.Air distributor 6 comprises middle part air distributor 62 and annular air distributor 61, the blast cap 621 preventing air distribution outlet from blocking is provided with above the air distribution outlet of middle part air distributor 62, the beam 63 of extension is provided with between middle part air distributor 62 and kiln body, in beam 63, there is ventilation duct, the ventilation duct conducting of middle part air distributor 62 and beam 63, the ventilation duct of beam 63 and the second annular air inlet duct 52 conducting, thus the conducting realizing middle part air distributor 62 and the second annular air inlet duct 52.Annular air distributor 61 and the first annular air inlet duct 51 conducting, and by air distribution outlet to kiln body internal cavity air distribution, annular air distributor 61 has annular inner wall 611 and annular outer wall 612, there is the gap as air distribution outlet, this gap and the first annular air inlet duct 51 conducting between annular inner wall 611 and annular outer wall 612.
In addition, the vertical cooling kiln of the present embodiment is when applying, and annular air inlet duct 5 is connected with air-blast system by blast inlet 10; Air outlet 12 is connected with induced draught system.
Please continue to refer to Fig. 1-Fig. 3, in figure, the direction of arrow represents the flow direction of cooling gas.The vertical cooling kiln of the present embodiment operationally, be arranged at hot broken agglomerate downstream, heat sinter passes through hopper 3 via charging trunnion 4 from opening for feed 7, in kiln body, free-falling is piled up under gravity, cooling air enters air distributor 6 air distribution from blast inlet 10 by annular air inlet duct 5, then from each air distribution outlet of air distributor 6 out, enter bottom kiln body, then drive in the wrong direction from bottom to top in kiln body, heat sinter carries out heat exchange with the cooling air driven in the wrong direction, heat sinter is cooled, cooling air expanded by heating rises simultaneously, finally rise in the hot air cavity 11 formed by the charge level A of the heat sinter piled up and kiln body, finally discharge from air outlet 12.In this course, heat sinter contacts with the cooling air of rising and continues to carry out heat exchange.Heat sinter, when falling to bottom kiln body, is piled up gradually and clogs between air distributor 6 and discharge port 8, thus formation agglomerate stock column has isolated the internal cavity of discharge port 8 and kiln body, can prevent cooling air from escaping.Equally, the one section of stock column combination seal door 9 remained in charging trunnion 4 can stop that high-temperature gas in kiln body escapes and the entering of flows outside air.Meanwhile, the pressure that can also control above-mentioned hot air cavity 11 by induced draught system prevents escaping of high-temperature gas and entering of flows outside air in kiln body further.
In addition, in the present embodiment, air distributor 6 comprises middle part air distributor 62 and annular air distributor 61, and this makes the air distribution bottom kiln body be tending towards even, is conducive to the cooling of heat sinter.
In addition, in the present embodiment, blast cap 621 is the multilayer cap structures with conical surface, and the heat sinter of whereabouts cannot enter air distribution outlet, effectively prevent the blocking of air distribution outlet.
It should be noted that above cited embodiment is only specific embodiments of the invention.Obvious the present invention is not limited to above embodiment, and the similar change thereupon made or distortion are that those skilled in the art can directly draw from content disclosed by the invention or be easy to just associate, and all should belong to protection scope of the present invention.
Claims (10)
1. a vertical cooling kiln, is characterized in that, comprising:
Have the kiln body of internal cavity, its top is provided with hopper, and the bottom of kiln body is provided with discharge port, and the top of described kiln body has air outlet;
Charging trunnion, it extends in the internal cavity of kiln body from described hopper;
Annular air inlet duct, it is arranged at the periphery of described kiln body, and described annular air inlet duct is provided with blast inlet;
Air distributor, it is located at the described bottom of kiln body internal cavity, the top of discharge port, and described air distributor has air distribution outlet, described air distributor and annular air inlet duct conducting, and by air distribution outlet to kiln body internal cavity air distribution.
2. vertical cooling kiln as claimed in claim 1, is characterized in that, described kiln body comprises shell and is located at least one insulation wear-resistant liner layer in shell.
3. vertical cooling kiln as claimed in claim 1, is characterized in that, described hopper is provided with hermatic door, to open or close the opening for feed of hopper.
4. vertical cooling kiln as claimed in claim 1, is characterized in that, described annular air inlet duct is connected with air-blast system by blast inlet.
5. vertical cooling kiln as claimed in claim 1, is characterized in that, described discharge port direction is also provided with dumper.
6. vertical cooling kiln as claimed in claim 1, is characterized in that, described air distributor comprise one in the middle part of air distributor, itself and described annular air inlet duct conducting.
7. vertical cooling kiln as claimed in claim 6, is characterized in that, is provided with the blast cap preventing air distribution outlet from blocking above the air distribution outlet of described middle part air distributor.
8. vertical cooling kiln as claimed in claim 6, is characterized in that, is provided with the beam of extension, has ventilation duct in beam between described middle part air distributor and kiln body, the ventilation duct conducting of described middle part air distributor and beam, the ventilation duct of described beam and annular air inlet duct conducting.
9. as the vertical cooling kiln in claim 1,6,7,8 as described in any one, it is characterized in that, described air distributor comprises an annular air distributor arranged along the circumference of kiln body, described annular air distributor has annular inner wall and annular outer wall, there is the gap as air distribution outlet, this gap and annular air inlet duct conducting between annular inner wall and annular outer wall.
10. vertical cooling kiln as claimed in claim 1, is characterized in that, described air outlet is connected with induced draught system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310419503.8A CN104451140A (en) | 2013-09-13 | 2013-09-13 | Vertical cooling kiln |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310419503.8A CN104451140A (en) | 2013-09-13 | 2013-09-13 | Vertical cooling kiln |
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| CN104451140A true CN104451140A (en) | 2015-03-25 |
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| CN201310419503.8A Pending CN104451140A (en) | 2013-09-13 | 2013-09-13 | Vertical cooling kiln |
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Cited By (13)
| 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 |
| CN108267018A (en) * | 2016-12-30 | 2018-07-10 | 中冶长天国际工程有限责任公司 | A kind of flashboard unloading type vertical cooling machine and sinter cooling means |
| CN108267020A (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 |
| CN108692576A (en) * | 2017-04-11 | 2018-10-23 | 中冶长天国际工程有限责任公司 | There are the flashboard unloading type vertical cooling machine and sinter cooling means of material position regulating device |
| CN108692575A (en) * | 2017-04-11 | 2018-10-23 | 中冶长天国际工程有限责任公司 | There are the vertical sinter cooler and sinter cooling means of material position regulating device |
| CN108866327A (en) * | 2018-05-31 | 2018-11-23 | 江苏东九重工股份有限公司 | A kind of high temperature pelletizing cooling means and its device |
| CN108955276A (en) * | 2017-05-23 | 2018-12-07 | 中冶长天国际工程有限责任公司 | Vertical sinter cooler and sinter cooling means with revolving top |
| CN109423556A (en) * | 2017-08-29 | 2019-03-05 | 中冶长天国际工程有限责任公司 | A kind of vertical cooling furnace of sinter air-draft-type and sinter cooling means |
| CN109425231A (en) * | 2017-08-29 | 2019-03-05 | 中冶长天国际工程有限责任公司 | A kind of sinter air-draft-type circulating cooling system and its technique |
| CN109654893A (en) * | 2017-10-11 | 2019-04-19 | 中冶长天国际工程有限责任公司 | A kind of vertical cooling furnace of sinter air-draft-type and sinter cooling means |
| CN109883207A (en) * | 2017-12-06 | 2019-06-14 | 北京同方生态能源科技有限公司 | It is a kind of to erect cold kiln plant for sinter cooling |
| CN113720142A (en) * | 2021-08-23 | 2021-11-30 | 西安交通大学 | Vertical cooling kiln with uniform heat exchange |
| CN115031541A (en) * | 2022-08-10 | 2022-09-09 | 泽州县金秋铸造有限责任公司 | Lifting type vertical cooling kiln cooling mechanism |
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| CN108267018A (en) * | 2016-12-30 | 2018-07-10 | 中冶长天国际工程有限责任公司 | A kind of flashboard unloading type vertical cooling machine and sinter cooling means |
| CN108267020A (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 |
| CN108267020B (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 |
| CN108267018B (en) * | 2016-12-30 | 2023-12-29 | 中冶长天国际工程有限责任公司 | Gate plate unloading type vertical cooler and sinter cooling method |
| 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 |
| CN108692576B (en) * | 2017-04-11 | 2024-04-05 | 中冶长天国际工程有限责任公司 | Gate plate unloading type vertical cooler with material level adjusting device and sinter cooling method |
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| CN108692575A (en) * | 2017-04-11 | 2018-10-23 | 中冶长天国际工程有限责任公司 | There are the vertical sinter cooler and sinter cooling means of material position regulating device |
| CN108692575B (en) * | 2017-04-11 | 2024-04-05 | 中冶长天国际工程有限责任公司 | Vertical sinter cooler with material level adjusting device and sinter cooling method |
| CN108955276A (en) * | 2017-05-23 | 2018-12-07 | 中冶长天国际工程有限责任公司 | Vertical sinter cooler and sinter cooling means with revolving top |
| CN108955276B (en) * | 2017-05-23 | 2023-07-04 | 中冶长天国际工程有限责任公司 | Vertical sinter cooler with rotary distributor and sinter cooling method |
| CN109425231A (en) * | 2017-08-29 | 2019-03-05 | 中冶长天国际工程有限责任公司 | A kind of sinter air-draft-type circulating cooling system and its technique |
| CN109423556B (en) * | 2017-08-29 | 2020-08-28 | 中冶长天国际工程有限责任公司 | Sintered ore air draft type vertical cooling furnace and sintered ore cooling method |
| CN109425231B (en) * | 2017-08-29 | 2024-02-13 | 中冶长天国际工程有限责任公司 | Air draft type circulating cooling system and process for sinter |
| CN109423556A (en) * | 2017-08-29 | 2019-03-05 | 中冶长天国际工程有限责任公司 | A kind of vertical cooling furnace of sinter air-draft-type and sinter cooling means |
| CN109654893B (en) * | 2017-10-11 | 2020-08-28 | 中冶长天国际工程有限责任公司 | Sintered ore air draft type vertical cooling furnace and sintered ore cooling method |
| CN109654893A (en) * | 2017-10-11 | 2019-04-19 | 中冶长天国际工程有限责任公司 | A kind of vertical cooling furnace of sinter air-draft-type and sinter cooling means |
| CN109883207A (en) * | 2017-12-06 | 2019-06-14 | 北京同方生态能源科技有限公司 | It is a kind of to erect cold kiln plant for sinter cooling |
| CN108866327A (en) * | 2018-05-31 | 2018-11-23 | 江苏东九重工股份有限公司 | A kind of high temperature pelletizing cooling means and its device |
| CN113720142A (en) * | 2021-08-23 | 2021-11-30 | 西安交通大学 | Vertical cooling kiln with uniform heat exchange |
| CN115031541A (en) * | 2022-08-10 | 2022-09-09 | 泽州县金秋铸造有限责任公司 | Lifting type vertical cooling kiln cooling mechanism |
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