CN110526596B - Quick cooling and discharging mixed lime kiln - Google Patents
Quick cooling and discharging mixed lime kiln Download PDFInfo
- Publication number
- CN110526596B CN110526596B CN201810501436.7A CN201810501436A CN110526596B CN 110526596 B CN110526596 B CN 110526596B CN 201810501436 A CN201810501436 A CN 201810501436A CN 110526596 B CN110526596 B CN 110526596B
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- air
- lime
- partition plate
- kiln body
- fire grate
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
-
- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention relates to the field of lime production, in particular to a mixing type lime kiln capable of rapidly cooling and discharging, which comprises a kiln body, wherein a partition plate is arranged in the kiln body, a plurality of through holes for passing lime finished products are formed in the partition plate, the partition plate is arranged at the lower side of a fire grate, a cooling cavity is formed between the fire grate and the partition plate, an aggregate cavity is formed at the lower side of the partition plate, an air outlet pipe is arranged on the side wall of the cooling cavity, and the air outlet pipe is connected with an air supply device, so that the lime finished products falling into the cooling cavity from the fire grate are cooled by air input from the air outlet pipe, the temperature of the lime finished products falling into the aggregate cavity is reduced faster, the collection, transportation and use of the lime finished products are facilitated, the high-temperature lime finished products are prevented from scalding workers, meanwhile, the air led into the fire grate is heated by the lime finished products, and the fire grate is dispersed by the fire grate, the normal and uniform combustion of fuel above the fire grate is conveniently maintained, the proceeding of the calcination process is promoted, and the calcination time is reduced.
Description
Technical Field
The invention relates to the field of lime production, in particular to a mixing type lime kiln capable of rapidly cooling and discharging.
Background
Lime is used as an important auxiliary material for industrial production, and is widely applied to various industries such as metallurgy, chemical industry, environmental protection, building materials and the like, the lime is generally prepared by calcining limestone by solid fuel such as coal, coke and the like by using the conventional mixed lime kiln, the conventional mixed lime kiln generally adopts a kiln top feeding and kiln bottom ash discharging structure, the interior of a kiln body is of a space structure communicated from top to bottom, the mixed fuel and limestone are sprayed on a grate through a distributing mechanism, air is introduced from the lower side of the grate, combustion of the fuel is maintained, the lime is prepared by calcining the fuel, the calcined lime falls into an aggregate groove at the bottom of the kiln body, and when an ash discharging hole at the bottom of the aggregate groove is opened, the calcined lime is output from the ash discharging hole for use.
However, because the collecting tank is communicated with the internal space of the kiln body, the lime finished product falling into the collecting tank has higher temperature on one hand, and on the other hand, the lime finished product is also continuously affected by the high temperature in the kiln body, the temperature is reduced slowly, the temperature of the lime finished product output from the ash discharge opening is higher, the lime finished product is not beneficial to timely transfer and use of workers, and the workers are easy to scald.
In summary, a technical scheme is needed at present, which solves the technical problems that in the conventional mixing lime kiln, a collecting tank for collecting lime finished products is integrally communicated with the inner space of the kiln body, so that the temperature of the lime finished products output from an ash discharge hole is higher, the follow-up collection and transportation are not facilitated, and the staff is easy to scald.
Disclosure of Invention
The invention aims at: to the compounding formula limekiln that current is commonly used, collect the integrative intercommunication of collection silo and the kiln body inner space of lime finished product, lead to the lime finished product temperature of follow-up unloading mouth output higher, be unfavorable for follow-up collection to transport, also cause the technical problem that the staff scalded easily, provide a quick cooling ejection of compact's compounding formula limekiln.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a compounding formula lime kiln of quick cooling ejection of compact, includes the kiln body, be provided with the baffle in the kiln body, be provided with a plurality of through-holes that are used for lime finished product to pass through on the baffle, the baffle sets up in the grate downside, forms the cooling chamber between grate and baffle, forms the chamber that gathers materials in the baffle downside, the cooling chamber lateral wall is provided with out the tuber pipe, it is connected with air supply arrangement to go out the tuber pipe.
According to the rapid cooling and discharging mixed lime kiln, the partition plate is arranged in the kiln body, the special cooling cavity is formed between the grate and the collecting cavity, so that a lime finished product falling into the cooling cavity from the grate is cooled by wind input by the air outlet pipe, the temperature of the lime finished product falling into the collecting cavity is reduced rapidly, the lime finished product is conveniently collected, transported and used, high-temperature lime finished product scalding workers are avoided, meanwhile, the wind introduced by the air supply pipe is used for cooling the lime finished product, air is introduced from the lower part of the grate to the upper part of the grate, the air introduced from the lower part of the grate is dispersed by the grate, the air can uniformly enter the raw material above the grate, the normal and uniform combustion of fuel above the grate is conveniently maintained, the calcination process is promoted, the calcination time is reduced, and the temperature of the lime finished product is conveniently absorbed by the air introduced above the grate, the temperature is higher, the influence of the air introduced above the grate on the inner temperature of the kiln is effectively avoided, and the smooth in-vivo calcination process of the kiln is further ensured.
Preferably, the air outlet pipe is spirally paved along the side wall of the cooling cavity, and a plurality of air outlets facing the center of the partition plate are arranged on the air outlet pipe. The air outlet pipe is spirally arranged along the side wall of the cooling cavity, so that the air outlet pipe is used for cooling the whole cooling cavity, and air introduced into the cooling cavity can be used for cooling lime finished products better, and the cooling effect is better.
Preferably, a plurality of conveying pipes are arranged at the bottom of the partition plate, the top ends of the conveying pipes are communicated with the through holes, and the conveying pipes are arranged along the vertical direction of the kiln body. The lime finished product is temporarily collected by the conveying pipe arranged at the bottom of the partition plate, so that the lime finished product falling into the cooling cavity enters the conveying pipe in advance to be collected, the lime finished product is dispersed into a plurality of conveying pipes to be cooled respectively, the cooling effect is better than that of accumulating in one collecting cavity, and the temperature reduction of the lime finished product is further accelerated.
Preferably, a valve control mechanism is arranged at the bottom end of the conveying pipe and used for controlling the communication and/or the separation of the cooling cavity and the collecting cavity. The bottom end of the conveying pipe is provided with the valve control mechanism, when the valve control mechanism is closed, the cooling cavity is separated from the material collecting cavity, so that a lime finished product is fully cooled by cold air input by the air supply device in the cooling cavity, the temperature of the lime finished product entering the material collecting cavity is reduced, the output of the lime finished product is facilitated, when the valve control mechanism is opened, the cooling cavity is communicated with the material collecting cavity, the lime finished product is smoothly dispersed and enters the material collecting cavity, and air input by the air supply device into the cooling cavity is correspondingly led into the material collecting cavity through the conveying pipe, so that the temperature in the material collecting cavity is further reduced, the reduction of the temperature in the material collecting cavity is facilitated, and meanwhile, the valve control mechanism can be closed according to actual conditions, so that the material collecting cavity is separated from the inner space of a kiln body, dust is prevented from being excited due to the input of air in the ash discharging process, the ash discharging operation of the lime finished product is facilitated, the waste of the lime finished product is reduced, dust pollution is avoided, and the lime finished product is smoothly collected and transported.
Preferably, the air supply device is also connected with an air inlet pipe, one end of the air inlet pipe is detachably connected with the top of the kiln body, the other end of the air inlet pipe is connected with the air supply device, and circulating air is formed between the inner space of the kiln body and the air supply device. The air inlet pipe of the air supply device is communicated with the internal space of the kiln body, so that air output from the top of the kiln body is circularly led into the kiln body to be used, on one hand, dust-carrying air pollution is avoided, on the other hand, as hot air output from the top of the kiln body is conveyed through the long pipeline of the air inlet pipe, heat exchange is carried out with external air, the temperature is reduced, the temperature of air input into the kiln body from the air outlet pipe is relatively low, and lime finished products in the cooling cavity can be cooled better.
Preferably, the air inlet pipe is spirally arranged along the outer wall of the kiln body. The air inlet pipe is spirally arranged on the outer wall of the kiln body, so that the length of the air inlet pipe is prolonged, the air in the air inlet pipe and the external space are subjected to heat exchange thoroughly, and the temperature of the input cooling cavity is lower.
Preferably, the air inlet pipe is provided with at least one siphon port communicated with the external space, and the opening direction of the siphon port is opposite to the air flow direction in the air inlet pipe. The siphon inlet is arranged on the air inlet pipe, so that the outside fresh air is continuously introduced into the air inlet pipe, and the reduction of the air temperature in the air inlet pipe is further accelerated.
In summary, by adopting the technical scheme, the rapid cooling and discharging mixed lime kiln has the beneficial effects that:
1. by arranging the partition plate in the kiln body, a special cooling cavity is formed between the fire grate and the material collecting cavity, so that the lime finished product falling into the cooling cavity from the fire grate is cooled by wind input by the air outlet pipe, the temperature of the lime finished product falling into the material collecting cavity is reduced faster, the lime finished product is convenient to collect, transport and use, and the high-temperature lime finished product is prevented from scalding workers;
2. the air introduced by the air supply pipe not only cools the lime finished product, but also leads the air to be introduced from the lower part of the fire grate to the upper part of the fire grate, so that the air above the introduced fire grate is dispersed by the fire grate and can more uniformly enter the raw materials above the fire grate, thereby being convenient for maintaining the normal and uniform combustion of the fuel above the fire grate, promoting the calcination process and reducing the calcination time;
3. because the air above the guiding grate absorbs the temperature of the lime finished product, the temperature is higher, the influence of the air above the guiding grate on the temperature in the kiln body is effectively avoided, and the smooth proceeding of the calcination process in the kiln body is further ensured.
Drawings
FIG. 1 is a schematic structural view of a rapid cooling and discharging mixed lime kiln of the invention.
Reference numerals
1-kiln body, 2-baffle, 21-through hole, 22-conveying pipe, 3-fire grate, 4-cooling cavity, 5-aggregate cavity, 6-air outlet pipe, 61-air outlet, 7-air supply device, 8-valve control mechanism, 9-air inlet pipe, 91-siphon mouth.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1, the mixing lime kiln capable of rapidly cooling and discharging comprises a kiln body 1, wherein a partition plate 2 is arranged in the kiln body 1, a plurality of through holes 21 for lime finished products to pass through are formed in the partition plate 2, the partition plate 2 is arranged on the lower side of a fire grate 3, a cooling cavity 4 is formed between the fire grate 3 and the partition plate 2, an aggregate cavity 5 is formed on the lower side of the partition plate 2, an air outlet pipe 6 is arranged on the side wall of the cooling cavity 4, and the air outlet pipe 6 is connected with an air supply device 7.
The material mixing type lime kiln with rapid cooling and discharging in the embodiment forms a special cooling cavity 4 between the fire grate 3 and the material collecting cavity 5 by arranging the baffle plate 2 in the kiln body 1, so that the lime finished product falling into the cooling cavity 4 from the fire grate 3 is cooled by wind input by the air outlet pipe 6, the temperature of the lime finished product falling into the material collecting cavity is reduced faster, the lime finished product is convenient to collect, transport and use, the high-temperature lime finished product is prevented from scalding workers,
preferably, the air introduced by the air supply device 7 not only cools the lime finished product, but also leads the air to be introduced from the lower part of the fire grate 3 to the upper part of the fire grate 3, so that the air above the introduced fire grate 3 is dispersed by the fire grate 3 and can more uniformly enter the raw materials above the fire grate 3, thereby being convenient for maintaining the normal uniform combustion of the fuel above the fire grate 3, promoting the calcination process, reducing the calcination time, and simultaneously, effectively avoiding the temperature of the kiln body 1 from being influenced by the air above the introduced fire grate 3 due to the fact that the temperature of the lime finished product is higher, and further ensuring the smooth proceeding of the calcination process in the kiln body 1.
Example 2
As shown in fig. 1, the structure of the mixing lime kiln with rapid cooling and discharging in this embodiment is the same as that in embodiment 1, and the difference is that: the air outlet pipe 6 is spirally paved along the side wall of the cooling cavity 4, and a plurality of air outlets 61 facing the center of the partition plate 2 are arranged on the air outlet pipe 6.
According to the mixed lime kiln capable of realizing quick cooling and discharging, the air outlet pipe 6 is spirally arranged along the side wall of the cooling cavity 4, so that the air outlet pipe 6 is used for cooling the whole cooling cavity 4, air led into the cooling cavity 4 can be used for cooling lime finished products well, the cooling effect is good, the cross section of the air outlet pipe 6 is preferably rectangular, the top surface of the air outlet pipe 6 is provided with the air outlet 61 facing the grate 3, the side surface of the air outlet 61 facing the center of the partition plate 2 is provided with the air outlet 61 facing the aggregate cavity 5, the bottom surface of the air outlet 61 facing the aggregate cavity 5 is provided, air output from the top surface of the air outlet pipe 6 smoothly enters the upper part of the grate 3, normal fuel of fuel on the grate 3 is maintained, air output from the side surface is used for cooling lime finished products in the cooling cavity 4, and air output from the ground is used for cooling lime finished products in the aggregate cavity 5, so that the lime finished products are cooled under the condition that the calcination process is guaranteed to the greatest extent, the quick cooling and discharging of the lime finished products is convenient, and workers are avoided.
Example 3
As shown in fig. 1, the structure of the mixing lime kiln with rapid cooling and discharging in this embodiment is the same as that in embodiment 2, and the difference is that: the bottom of the partition plate 2 is provided with a plurality of conveying pipes 22, the top ends of the conveying pipes 22 are communicated with the through holes 21, and the conveying pipes 22 are arranged along the vertical direction of the kiln body 1.
According to the mixed lime kiln capable of rapidly cooling and discharging, lime finished products are temporarily collected through the conveying pipes 22 arranged at the bottoms of the partition boards 2, so that the lime finished products falling into the cooling cavities 4 enter the conveying pipes 22 in advance to be collected, the lime finished products are dispersed into the plurality of conveying pipes 22 to be cooled respectively, and the cooling effect is better than that of being accumulated in the collecting cavities 5 due to the fact that the lime finished products are more dispersed, and the cooling effect is further improved.
Preferably, a valve control mechanism 8 is arranged at the bottom end of the material conveying pipe 22, and the valve control mechanism 8 is used for controlling the communication and/or the separation between the cooling cavity 4 and the material collecting cavity 5. In this embodiment, the valve control assembly 8 preferably includes a sealing plate with a plate structure and a power mechanism for controlling the sealing plate to move, the power mechanism is a motor, the valve control mechanism 8 is disposed at the bottom end of the conveying pipe 22, when the valve control mechanism 8 is closed, the cooling cavity 4 is separated from the collecting cavity 5, so that the lime finished product is fully cooled by cold air input by the air supply device 7 in the cooling cavity 4, the temperature of lime finished product entering the collecting cavity 5 is reduced, the output of lime finished product is facilitated, when the valve control mechanism 8 is opened, the cooling cavity 4 is communicated with the collecting cavity 5, the lime finished product is smoothly dispersed into the collecting cavity 5, and air input by the air supply device 7 is correspondingly introduced into the collecting cavity 5 through the conveying pipe 22, so that the temperature in the collecting cavity 5 is further reduced, the temperature in the collecting cavity 5 is facilitated, meanwhile, the valve control mechanism 8 can be closed according to practical situations, the collecting cavity 5 is separated from the internal space of the kiln body 1, the lime finished product is prevented from being excited due to the input of air in the ash unloading process, the lime finished product is convenient to unload the dust pollution of the lime finished product is reduced, and the dust is smoothly collected.
Example 4
As shown in fig. 1, the structure of the mixing lime kiln with rapid cooling and discharging in this embodiment is the same as that in embodiment 2, and the difference is that: the air supply device 7 is also connected with an air inlet pipe 9, the air inlet pipe 9 is spirally arranged along the outer wall of the kiln body 1, one end of the air inlet pipe 9 is detachably connected with the top of the kiln body 1, the other end of the air inlet pipe is connected with the air supply device 7, and circulating air is formed between the inner space of the kiln body 1 and the air supply device 7.
According to the mixed lime kiln capable of rapidly cooling and discharging, the air inlet pipe 9 of the air supply device is communicated with the inner space of the kiln body 1, so that air output from the top of the kiln body 1 is circularly led into the kiln body 1 to be used, on one hand, dust-carrying air pollution is avoided, on the other hand, as the air inlet pipe 9 is spirally arranged on the outer wall of the kiln body 1, the length of the air inlet pipe 9 is prolonged, hot air output from the top of the kiln body 1 is conveyed through a long pipeline of the air inlet pipe 9, heat exchange is carried out with external air, the temperature is reduced, the temperature of air input into the kiln body 1 from the air outlet pipe 6 is relatively low, and lime finished products in the cooling cavity 4 can be cooled well.
Preferably, the air inlet pipe 9 is provided with at least one siphon port 91 communicating with the external space, and the opening direction of the siphon port 91 is opposite to the air flowing direction in the air inlet pipe 9. The siphon inlet 91 is arranged on the air inlet pipe 9, so that the outside fresh air is continuously introduced into the air inlet pipe 9, and the reduction of the air temperature in the air inlet pipe 9 is further accelerated.
The foregoing examples are only for illustrating the present invention and not for limiting the technical solutions described in the present invention, and although the present invention has been described in detail with reference to the foregoing examples, the present invention is not limited to the above-described specific embodiments, and therefore any modifications or equivalent substitutions are made thereto without departing from the spirit and scope of the present invention, and all such modifications and improvements are intended to be included in the scope of the claims of the present invention.
Claims (4)
1. Quick cooling ejection of compact compounding formula limekiln, including the kiln body, its characterized in that: the lime kiln comprises a kiln body, and is characterized in that a partition plate is arranged in the kiln body, a plurality of through holes for lime finished products to pass through are formed in the partition plate, a cooling cavity is formed between the fire grate and the partition plate, a material collecting cavity is formed in the lower side of the partition plate, an air outlet pipe is arranged on the side wall of the cooling cavity and connected with an air supply device, the air outlet pipe is spirally paved along the side wall of the cooling cavity, a plurality of air outlets facing the center of the partition plate are formed in the air outlet pipe, the lime finished products falling into the cooling cavity from the fire grate are cooled by air input from the air outlet pipe, a plurality of conveying pipes are arranged at the bottom of the partition plate, the top ends of the conveying pipes are communicated with the through holes, the conveying pipes are arranged along the vertical direction of the kiln body, and a valve control mechanism is arranged at the bottom end of the conveying pipes and used for controlling the communication and/or the separation of the cooling cavity and the material collecting cavity.
2. A mixed lime kiln according to claim 1, wherein: the air supply device is also connected with an air inlet pipe, one end of the air inlet pipe is detachably connected with the top of the kiln body, the other end of the air inlet pipe is connected with the air supply device, and circulating air is formed between the space in the kiln body and the air supply device.
3. A mixed lime kiln according to claim 2, wherein: the air inlet pipe is spirally arranged along the outer wall of the kiln body.
4. A mixed lime kiln according to claim 3, wherein: the air inlet pipe is provided with at least one siphon port communicated with the external space, and the opening direction of the siphon port is opposite to the air flow direction in the air inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810501436.7A CN110526596B (en) | 2018-05-23 | 2018-05-23 | Quick cooling and discharging mixed lime kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810501436.7A CN110526596B (en) | 2018-05-23 | 2018-05-23 | Quick cooling and discharging mixed lime kiln |
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| Publication Number | Publication Date |
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| CN110526596A CN110526596A (en) | 2019-12-03 |
| CN110526596B true CN110526596B (en) | 2023-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810501436.7A Active CN110526596B (en) | 2018-05-23 | 2018-05-23 | Quick cooling and discharging mixed lime kiln |
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| Country | Link |
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| CN (1) | CN110526596B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114772954A (en) * | 2022-02-28 | 2022-07-22 | 中冶长天国际工程有限责任公司 | Double-chamber lime kiln and ring cooling suspension cylinder for same |
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| CN206273811U (en) * | 2016-12-23 | 2017-06-23 | 山西奋达机械制造有限公司 | A kind of upright active lime calcining furnace |
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| CN216584767U (en) * | 2022-01-27 | 2022-05-24 | 中冶长天国际工程有限责任公司 | Cooling airflow distributor for lime kiln and double-chamber lime kiln |
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2018
- 2018-05-23 CN CN201810501436.7A patent/CN110526596B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH589010A5 (en) * | 1973-06-20 | 1977-06-30 | Vyzk Ustav Stavebnich Hmot | |
| AU6980496A (en) * | 1995-09-26 | 1997-04-17 | David Mitchell Limited | Fluidized bed lime kiln |
| CN201010615Y (en) * | 2007-03-19 | 2008-01-23 | 卢继升 | Girder type ventilating and refrigerating mechanism for lime shaft kiln |
| CN101195520A (en) * | 2007-12-19 | 2008-06-11 | 黄官禹 | Vertical continuous calcination lime burner |
| CN201217652Y (en) * | 2008-04-11 | 2009-04-08 | 孔德超 | Coal gas burnt lime vertical kiln |
| CN202369509U (en) * | 2011-12-26 | 2012-08-08 | 建德市天石碳酸钙有限责任公司 | Double-layer hood limekiln |
| CN103304157A (en) * | 2012-03-10 | 2013-09-18 | 泰安中意粉体热工研究院 | Energy-conservation and emission-reduction type active lime calcination method and apparatus |
| CN102627418A (en) * | 2012-04-26 | 2012-08-08 | 石家庄市新华工业炉有限公司 | Compound lime kiln |
| CN206273811U (en) * | 2016-12-23 | 2017-06-23 | 山西奋达机械制造有限公司 | A kind of upright active lime calcining furnace |
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| CN216584767U (en) * | 2022-01-27 | 2022-05-24 | 中冶长天国际工程有限责任公司 | Cooling airflow distributor for lime kiln and double-chamber lime kiln |
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| CN110526596A (en) | 2019-12-03 |
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