CN218646066U - Sinter shaft kiln cooling device - Google Patents
Sinter shaft kiln cooling device Download PDFInfo
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- CN218646066U CN218646066U CN202222763601.0U CN202222763601U CN218646066U CN 218646066 U CN218646066 U CN 218646066U CN 202222763601 U CN202222763601 U CN 202222763601U CN 218646066 U CN218646066 U CN 218646066U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model relates to a sintering deposit shaft kiln cooling device, including the shaft kiln body, the shaft kiln body include barrel and shaft kiln interior barrel outside the shaft kiln, the shaft kiln in the barrel set up at the shaft kiln urceolus internally with one heart, the lower part of barrel is equipped with the bin outlet outside the shaft kiln, the top is equipped with the distributing device who is used for carrying the sintering deposit, be equipped with a plurality of cooling air entry that multilayer circumference was arranged on the section of thick bamboo wall of barrel outside the shaft kiln, be equipped with the hot waste gas air outlet of a plurality of that multilayer circumference was arranged on the section of thick bamboo wall of barrel in the shaft kiln, constitute the cooling chamber between barrel and the shaft kiln outer barrel in making the shaft kiln, every cooling air entry one end with the cooling chamber intercommunication, the other end passes through the pipeline and is connected with cooling blower. The utility model discloses with traditional vertical countercurrent flow, become the vertical cross heat transfer. The structure of the outer cylinder body and the inner cylinder body of the outer cylinder body sleeve ensures that the shaft kiln unloads materials, and simultaneously realizes the uniformity of the thickness of the material layer, and the air inlet and outlet modes which are staggered up and down realize 360-degree full circumferential cooling.
Description
Technical Field
The utility model relates to a steel smelting technical field, it is specific, relate to a sinter shaft kiln cooling device.
Background
The existing cooling process of a sintering shaft kiln is to convey the sintered ore after thermal crushing to the top of the kiln through a material conveying device, and to accumulate the sintered ore in a kiln chamber after the material is distributed by a distributing device. When the sintered ore is discharged in the kiln chamber by self weight, the cooling air at the bottom penetrates through the sintered ore from bottom to top, after the heat exchange with the sintered ore in a countercurrent way, the hot sintered ore is cooled to below 120 ℃, the hot sintered ore is discharged to a belt by a discharging machine arranged at the bottom of the kiln, the cooling air is heated into hot waste gas, and the hot waste gas is collected by a main flue at the top of the kiln chamber and then is sent to a waste heat boiler for waste heat utilization. Wherein the shaft kiln is a core device of the whole shaft kiln cooling process.
The shaft kiln cooling process is practiced by a plurality of domestic iron and steel enterprises, and two problems mainly exist in terms of actual operation effect: firstly, the cooling of the hot sintering ore is uneven, and the red ore still exists in the blanking; secondly, the temperature of the hot waste gas is low, the deviation from the theoretical design value is large, the waste heat utilization efficiency is low, and even steam with usable quality cannot be generated at all. The two problems are only shown, and the core problem is that the distribution of the cooling air flow of the shaft kiln is uneven, so that the cooling air and the hot sintering ore can not be uniformly and sufficiently exchanged with each other.
The airflow distribution is uneven, firstly, because a discharge port needs to be arranged at the bottom of the shaft kiln, and the bottom of the shaft kiln is in a cone hopper shape, the thickness of a material layer cannot be consistent in structure; secondly, cooling air enters from the local part of the conical side wall, and the transverse diffusion capability of the cooling air is lower than the ascending power caused by the negative pressure of the kiln top, so that the cooling air entering from the local part penetrates through the material layer before transversely diffusing to the whole cross section. The two reasons are combined to cause uneven distribution of cooling airflow of the existing shaft kiln, only part of sinter can be cooled by air, and the phenomenon is more serious when the scale is larger.
Disclosure of Invention
In order to solve the technical problem, the utility model aims at providing a sintering deposit shaft kiln cooling device when guaranteeing that the cooling air pierces through the bed of material thickness unanimity of shaft kiln, also can accomplish cold wind in the evenly distributed in bed of material cross-section for the abundant heat transfer of cooling air and hot sintering deposit, thereby realize the complete cooling of sintering deposit, and improve waste heat exhaust gas temperature.
The purpose of the utility model is realized by the following technical scheme:
the utility model discloses a shaft kiln cooling device for sintering ore, including the shaft kiln body, its characterized in that, the shaft kiln body include barrel and shaft kiln interior barrel outside the shaft kiln, the shaft kiln in the barrel set up at the shaft kiln urceolus internally with one heart, the internal lower part of shaft kiln urceolus is arranged in to the lower extreme of barrel in the shaft kiln, the upper portion of barrel stretches out from the upper portion of the barrel outside the shaft kiln as hot exhaust gas mouth in the shaft kiln, the lower part of barrel is equipped with the bin outlet outside the shaft kiln, the top of barrel is equipped with the distributing device who is used for carrying the sintering ore outside the shaft kiln, be equipped with a plurality of cooling air entry that multilayer circumference was arranged on the section of thick bamboo wall of barrel outside the shaft kiln, be equipped with a plurality of hot waste gas air outlet that multilayer circumference was arranged on the section of thick bamboo wall of barrel in the shaft kiln, make constitute the cooling chamber between barrel and the barrel outside the shaft kiln, every cooling air entry one end with the cooling chamber intercommunication, the other end passes through the pipeline and is connected with cooling blower to in entering the cooling chamber with the air drum, make the interior formation circumference of cooling chamber advance to go out hot waste gas circumference.
Preferably, the shaft kiln outer cylinder and the shaft kiln inner cylinder are both composed of an upper cylinder and a lower cone.
Preferably, four layers of cooling air inlets are arranged on the circumference of the cylinder of the shaft kiln outer cylinder, 4-6 cooling air inlets are equally distributed on each layer, the cooling air inlets of two adjacent layers are arranged in a staggered way on the circumference, and 4-6 cooling air inlets are also arranged on the cone of the shaft kiln outer cylinder;
the cylinder of the shaft kiln inner cylinder is circumferentially provided with four layers of hot waste gas air outlets, each layer is equally provided with 4-6 hot waste gas air outlets, the adjacent two layers of hot waste gas air outlets are arranged in a staggered manner on the circumference, and meanwhile, the hot waste gas air outlets are arranged at the bisector position of the included angle between the two cooling air outlets of the same layer of the shaft kiln outer cylinder, so that 360-degree full circumferential cold air inlet and full circumferential hot air outlet are formed.
According to the above description, the utility model discloses compare with traditional shaft kiln cooling process, because the sintering material constitutes the cooling chamber when cooling off in shaft kiln between barrel and the shaft kiln outer barrel, its cooling air is original to become the material layer in going into by going into down the upper discharging layer, and this fundamentally has solved traditional shaft kiln because the uneven problem of material layer cooling that cloth and toper structure caused. In addition, through the angle that staggers in the direction of height of many tuyeres, can realize that 360 all have the cooling air to pierce through the bed of material in shaft kiln circumference, when having guaranteed that the bed of material thickness that the cooling air pierces through the shaft kiln is unanimous, also can accomplish the evenly distributed of cold wind in the bed of material cross-section for cooling air and the abundant heat transfer of hot sinter, thereby realize the complete cooling of sinter, and improved waste heat exhaust gas temperature.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of fig. 1.
Fig. 3 is a sectional view taken along line B-B of fig. 1.
Fig. 4 is a cross-sectional view C-C of fig. 1.
Fig. 5 is a cross-sectional view taken along line D-D of fig. 1.
In the figure: 1. sintering mineral aggregate, 2, cooling air, 3, hot waste gas, 4, a shaft kiln outer cylinder, 5, a shaft kiln inner cylinder, 6, a cooling air inlet, 7, a hot waste gas outlet, 8, a distributing device and 9, wherein the discharging opening is formed.
Detailed Description
The following further describes the embodiments of the present invention with reference to the drawings.
As shown in fig. 1-5, the utility model discloses a sintering deposit shaft kiln cooling device, including the shaft kiln body, its characterized in that, the shaft kiln body include barrel 4 and shaft kiln interior barrel 5 outside the shaft kiln, the shaft kiln in barrel 5 with set up with one heart in the barrel 4 outside the shaft kiln, the lower part in the barrel 4 outside the shaft kiln is arranged in to the lower extreme of barrel 5 in the shaft kiln, the upper portion of barrel 5 stretches out from the upper portion of barrel 4 outside the shaft kiln as hot exhaust gas mouth in the shaft kiln, be equipped with bin outlet 9 in the lower part of barrel 4 outside the shaft kiln, be equipped with the distributing device 8 that is used for carrying the sintering mineral aggregate on the top of barrel 4 outside the shaft kiln, be equipped with a plurality of cooling air inlet 6 that multilayer circumference was arranged on the section of thick bamboo wall of barrel 4 outside the shaft kiln, be equipped with a plurality of hot exhaust gas outlet 7 that multilayer circumference was arranged on the section of thick bamboo wall of thick bamboo 5 in the shaft kiln, make the shaft kiln in barrel 4 and the shaft kiln constitute the cooling chamber between the barrel 5, every cooling air inlet 7 one end with cooling chamber intercommunication, the other end passes through the pipeline and is connected with cooling fan to make the interior cooling air and go into the cooling air outlet 2, make the interior hot blast air of cooling chamber.
The shaft kiln outer cylinder 4 and the shaft kiln inner cylinder 5 are composed of an upper cylinder and a lower cone.
The utility model is provided with four layers of cooling air inlets in the circumferential direction of the cylinder of the shaft kiln outer cylinder body 4, 4-6 cooling air inlets 7 are arranged in each layer in equal division, the cooling air inlets of two adjacent layers are arranged in a staggered way on the circumference, and 4-6 cooling air inlets are also arranged on the cone of the shaft kiln outer cylinder body 4;
four layers of hot waste gas air outlets 7 are formed in the circumferential direction of the cylinder of the shaft kiln inner cylinder body 5, 4-6 hot waste gas air outlets 7 are equally arranged in each layer, and the hot waste gas air outlets 7 of two adjacent layers are arranged in a staggered mode on the circumference, so that the mixing time of air and sinter in each layer is prolonged; meanwhile, the hot waste gas outlet 7 is arranged at the bisector position of the included angle of the two cooling air ports 6 of the outer cylinder body 4 of the same-layer shaft kiln to form 360-degree full-circumferential cold air inlet and full-circumferential hot air outlet. Effectively increase the cooling air stroke and increase the heat exchange time.
The shaft kiln in the upper portion of barrel 5 stretch out as hot exhaust outlet from the upper portion of barrel 4 outside the shaft kiln, the dust remover and pipeline and waste heat utilization headtotail are passed through on the upper portion of barrel 5 in its shaft kiln. Not shown in the figures.
After the sintered mineral aggregate is fully distributed in a cooling chamber between the shaft kiln outer cylinder 4 and the shaft kiln inner cylinder 5 through the distributing device 8, the sintered aggregate 1 flows from top to bottom under the action of self weight to fill a mineral aggregate cavity formed by bottom discharge; in the flowing process, cooling air enters from the cooling air inlet 6 on the wall of the shaft kiln outer cylinder 4 in the whole circumferential direction, the fan establishes negative pressure in the shaft kiln inner cylinder 5, so that the cooling air transversely penetrates through a sintering material layer and enters the inner cylinder 5 through the hot waste gas outlet 7, the cooling air of each layer is collected in the inner cylinder 5, and then the cooling air is sent to the waste heat boiler to generate steam for waste heat utilization.
The utility model discloses a shaft kiln cooling device becomes the vertical cross heat transfer with traditional vertical countercurrent flow. The structure of the outer cylinder body and the inner cylinder body of the outer cylinder body sleeve ensures that the shaft kiln unloads materials, and simultaneously realizes the uniformity of the thickness of the material layer, and the air inlet and outlet modes which are staggered up and down realize 360-degree full circumferential cooling. The material layer thickness is even and the air inlet is arranged in the full circumferential direction, so that the cooling air and the hot sinter can fully exchange heat, the cooling effect of the sinter is ensured, the temperature of hot waste gas is improved, and the utilization efficiency of waste heat is improved.
The shaft kiln is divided into an outer cylinder and an inner cylinder, the wall of the outer cylinder is provided with a cooling air inlet, the wall of the inner cylinder is provided with a hot waste gas outlet, accumulated sintering mineral aggregate is arranged between the inner cylinder and the outer cylinder, cooling air enters from the side wall of the outer cylinder and transversely penetrates through a material layer, the cooling air enters the inner cylinder through the hot waste gas outlet on the side wall of the inner cylinder, is collected and then is discharged from the top, and finally enters the waste heat utilization system.
The side walls of the outer cylinder and the inner cylinder of the shaft kiln are provided with a plurality of cooling air inlets or hot waste gas 3 outlets in the vertical direction, and the upper air inlet and the lower air inlet are staggered in angle, so that air inlet and air outlet of the whole shaft kiln are realized finally; the air inlet of the outer barrel and the air outlet of the inner barrel of each layer need to be staggered, so that the mixing time of air and sinter in each layer is prolonged.
Claims (4)
1. The utility model provides a sintering deposit shaft kiln cooling device, includes the shaft kiln body, its characterized in that, the shaft kiln body include shaft kiln outer barrel and shaft kiln inner barrel, shaft kiln inner barrel set up at the shaft kiln urceolus internally with one heart, the lower part in the shaft kiln urceolus is arranged in to the lower extreme of barrel in the shaft kiln, the upper portion of barrel stretches out from the upper portion of shaft kiln outer barrel as hot exhaust outlet in the shaft kiln, be equipped with the bin outlet in the lower part of shaft kiln outer barrel, be equipped with the distributing device who is used for carrying the sintering deposit on the top of shaft kiln outer barrel, be equipped with a plurality of cooling air entry that multilayer circumference was arranged on the section of thick bamboo wall of shaft kiln outer barrel, be equipped with a plurality of hot exhaust outlet that multilayer circumference was arranged on the section of thick bamboo wall of shaft kiln inner barrel, make constitute the cooling chamber between shaft kiln inner barrel and the shaft kiln outer barrel, every cooling air entry one end with the cooling chamber intercommunication, the other end passes through the pipeline and is connected with cooling blower to blast air in the cooling chamber, make the interior formation circumference of cooling chamber advance cold wind and go out hot exhaust gas of circumference.
2. The cooling device for a shaft kiln for sintering ore according to claim 1, wherein the shaft kiln outer cylinder and the shaft kiln inner cylinder are each composed of an upper cylinder and a lower cone.
3. The cooling device of the shaft kiln for the sinter ore according to claim 2, wherein four layers of cooling air inlets are arranged on the circumference of the cylinder of the outer cylinder of the shaft kiln, 4-6 cooling air inlets are equally arranged on each layer, the cooling air inlets of two adjacent layers are arranged in a staggered way on the circumference, and 4-6 cooling air inlets are also arranged on the cone of the outer cylinder of the shaft kiln;
four layers of hot waste gas air outlets are arranged in the circumferential direction of the cylinder of the vertical kiln inner cylinder, 4-6 hot waste gas air outlets are arranged in each layer in an equally-divided mode, the adjacent two layers of hot waste gas air outlets are arranged in a staggered mode in the circumferential direction, and meanwhile the hot waste gas air outlets are arranged at the bisector position of the included angle between the two cooling air ports of the vertical kiln outer cylinder on the same layer, so that 360-degree full-circumferential cold air inlet and full-circumferential hot air outlet are formed.
4. The cooling device of the shaft kiln for sintering ores as claimed in claim 1, wherein the shaft kiln inner cylinder is connected with a waste heat utilization system through a dust remover and a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222763601.0U CN218646066U (en) | 2022-10-20 | 2022-10-20 | Sinter shaft kiln cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222763601.0U CN218646066U (en) | 2022-10-20 | 2022-10-20 | Sinter shaft kiln cooling device |
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| Publication Number | Publication Date |
|---|---|
| CN218646066U true CN218646066U (en) | 2023-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222763601.0U Active CN218646066U (en) | 2022-10-20 | 2022-10-20 | Sinter shaft kiln cooling device |
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| CN (1) | CN218646066U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269307A (en) * | 2017-11-03 | 2019-01-25 | 山东耀华能源投资管理有限公司 | Totally-enclosed vertical air cooling kiln for sinter and working method thereof |
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2022
- 2022-10-20 CN CN202222763601.0U patent/CN218646066U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269307A (en) * | 2017-11-03 | 2019-01-25 | 山东耀华能源投资管理有限公司 | Totally-enclosed vertical air cooling kiln for sinter and working method thereof |
| CN109269307B (en) * | 2017-11-03 | 2024-03-08 | 山东耀华能源投资管理有限公司 | Totally-enclosed vertical air cooling kiln for sinter and working method thereof |
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