CN219861113U - Hearth waste gas pressure equalizing device and double-hearth kiln production system - Google Patents
Hearth waste gas pressure equalizing device and double-hearth kiln production system Download PDFInfo
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- CN219861113U CN219861113U CN202321140167.9U CN202321140167U CN219861113U CN 219861113 U CN219861113 U CN 219861113U CN 202321140167 U CN202321140167 U CN 202321140167U CN 219861113 U CN219861113 U CN 219861113U
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- pressure equalizing
- hearth
- exhaust gas
- box body
- waste gas
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- 239000002912 waste gas Substances 0.000 title claims abstract description 82
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 239000000428 dust Substances 0.000 claims abstract description 64
- 238000005192 partition Methods 0.000 claims abstract description 44
- 239000007789 gas Substances 0.000 claims abstract description 38
- 239000004744 fabric Substances 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000010865 sewage Substances 0.000 claims description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract description 16
- 235000011941 Tilia x europaea Nutrition 0.000 abstract description 16
- 239000004571 lime Substances 0.000 abstract description 16
- 235000019738 Limestone Nutrition 0.000 description 6
- 239000006028 limestone Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 5
- 239000000292 calcium oxide Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000001354 calcination Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000003915 air pollution Methods 0.000 description 2
- 239000011362 coarse particle Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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- Chimneys And Flues (AREA)
Abstract
The utility model relates to the technical field of double-hearth lime kiln equipment, in particular to a hearth waste gas pressure equalizing device and a double-hearth kiln production system. The device comprises a sealed pressure equalizing box body, wherein an exhaust gas inlet and an exhaust gas outlet are formed in the pressure equalizing box body, a plurality of partition boards are arranged in the pressure equalizing box body at intervals, and each partition board comprises a first partition board, a second partition board and an N partition board which are sequentially arranged from the exhaust gas inlet end to the exhaust gas outlet end; the top of the partition board at the odd number position is fixedly connected with the upper wall of the pressure equalizing box body, so that the reverse hanging of the partition board is realized; the bottoms of the partition boards at even positions are fixedly connected with the lower wall of the pressure equalizing box body, so that the vertical arrangement of the partition boards is realized, and a wavy channel is formed in the pressure equalizing box body; and corresponding holes are formed on the partition plate. Compared with the prior art, the pressure equalizing device solves the problem of high exhaust gas discharge pressure, and reduces the concentration of waste gas and dust; meanwhile, the dust pressure of the subsequent bag-type dust collector can be effectively relieved.
Description
Technical Field
The utility model relates to the technical field of double-hearth lime kiln equipment, in particular to a hearth waste gas pressure equalizing device and a double-hearth kiln production system.
Background
Currently, domestic lime kilns mainly comprise a single-hearth lime kiln, a double-hearth lime kiln and a rotary lime kiln. The lime kiln with double hearths consists of two lime kilns with intercommunicated hearths, and the two hearths are controlled by an annular channel and a reversing valve to mutually convert and calcine.
The limestone enters a calcining zone after being fully preheated by hot air and limestone after entering a first hearth, fuel is fully heat-exchanged with the limestone after being combusted in the calcining zone to generate calcium oxide, the calcined calcium oxide continuously descends in the furnace and enters a cooling zone, the calcium oxide is cooled by cold air of the cooling zone, the cold air for cooling the calcium oxide is converted into hot air through a communicating flue between the first hearth and the second hearth and then enters the second hearth, the hot air continuously ascends to exchange heat and store heat with the limestone in the second hearth, the first hearth is closed after being calcined for 15-20 minutes, the fuel valve of the second hearth is opened to start calcining the limestone in the second hearth, and at the same time, the waste gas valve of the second hearth is opened, the first hearth discharge valve is closed after the waste gas of the waste gas valve of the second hearth is discharged, cold air of the cooled finished calcium oxide in the second hearth is converted into hot air after heat exchange and enters the first hearth to be preheated with limestone in the first hearth, cyclic production is repeated, the conversion time between the first hearth and the second hearth is about 1 minute, the pressure in the hearth can reach 17-30 kpa, the waste gas in the hearth directly enters the atmosphere through a pipeline with the diameter of 600mm in the heat exchange process, a large amount of dust is mixed in the waste gas discharge process and discharged into the atmosphere together, air pollution is caused, certain pressure is brought to the environmental protection production of companies, and the converted waste gas and dust of the two hearths are discharged to the atmosphere together, so that the waste gas and the dust are the environmental protection defect existing in the production process of the double hearth lime kiln.
At present, in the domestic double-hearth lime kiln, a large amount of waste gas is released into the atmosphere in the production process and the conversion process of the first hearth and the second hearth, so that the influence on the surrounding environment is brought, the air pollution is caused, and certain pressure is brought to the environment. The exhaust gas and dust generated in the conversion process of the two hearths are discharged to the atmosphere together, so that the environment pollution is caused, the increasingly severe environment-friendly pressure is faced, and the problem of unorganized discharge becomes a main factor for restricting the normal and stable production of the double hearth lime kiln.
The tail end of the waste gas pipeline is plugged aiming at the phenomenon, the waste gas pipeline is directly connected to the bag-type dust collector, the pressure of the waste gas is released by utilizing the box body of the bag-type dust collector, and meanwhile, dust in the waste gas is collected. According to the scheme, the fact that waste gas in a kiln is instantaneously released by about 17-30 kpa is found, the pressure of a dust collector box body and the design discharge pressure are 5kpa, the pressure generated during the discharge of waste gas in a hearth can enable a dust collecting cover at the tail end of a cloth bag dust collector to be instantaneously changed into a positive pressure state from negative pressure, dust at a dust collecting point on site flows back and overflows, an unstructured discharge phenomenon is caused at the dust collecting point, meanwhile, the internal pressure of the cloth bag dust collector is instantaneously increased, the dust concentration at an outlet of the cloth bag dust collector is instantaneously increased, and dust discharge data of the cloth bag dust collector are easily out of standard and the like.
Based on the above, the utility model provides a novel hearth waste gas pressure equalizing device and a double-hearth kiln production system, so as to overcome the defects in the prior art.
Disclosure of Invention
The utility model aims to provide the furnace waste gas pressure equalizing device, which solves the problem of high waste gas discharge pressure and reduces the concentration of waste gas and dust; meanwhile, the dust pressure of the subsequent bag-type dust collector can be effectively relieved.
In order to achieve the above purpose, the utility model provides a furnace waste gas pressure equalizing device, which comprises a sealed pressure equalizing box body, wherein a waste gas inlet and a waste gas outlet are formed in the pressure equalizing box body, a plurality of partition boards which are arranged at intervals are arranged in the pressure equalizing box body, and each partition board comprises a first partition board, a second partition board and an N partition board which are sequentially arranged from the waste gas inlet end to the waste gas outlet end;
the top of the partition board at the odd number position is fixedly connected with the upper wall of the pressure equalizing box body, so that the reverse hanging of the partition board is realized; the bottoms of the partition boards at even positions are fixedly connected with the lower wall of the pressure equalizing box body, so that the vertical arrangement of the partition boards is realized, and a wavy channel is formed in the pressure equalizing box body;
and corresponding holes are formed in the partition plate.
Further, the diameters of the holes on the first baffle plate, the second baffle plate and the N baffle plate are gradually reduced.
Further, a sewage discharge port is arranged at the bottom of the pressure equalizing box body.
Further, an inspection manhole is formed in the pressure equalizing box body.
Furthermore, the pressure equalizing box body is connected by splicing and welding steel plates.
Further, three partition plates are arranged.
Further, the exhaust gas inlet and the exhaust gas outlet are both arranged at the top of the pressure equalizing box body.
The utility model has the following beneficial effects:
when the hearth waste gas pressure equalizing device is used, clear water with a certain height is stored in the pressure equalizing box body, corresponding waste gas enters from the waste gas inlet, and part of waste gas passes through the wavy channel formed by the partition plates and is finally discharged from the waste gas outlet; the other part of the waste gas directly penetrates through the first baffle plate, the second baffle plate and the N baffle plate in sequence and is discharged through the waste gas outlet.
The furnace waste gas pressure equalizing device utilizes the pressure equalizing device to slowly reduce the pressure of waste gas instantaneously released by 17-30 kpa in the double-hearth lime kiln to about 5kpa, thereby solving the problem of high waste gas discharge pressure. And the pressure of the waste gas in the pressure equalizing device is released, and meanwhile, dust mixed in the waste gas is collected in the pressure slow-down process, so that the dust concentration of the waste gas is reduced. In addition, the furnace waste gas is mixed with coarse particle dust in the waste gas to collect after flowing through the furnace waste gas pressure equalizing device, so that the dust pressure of a subsequent bag-type dust remover can be effectively relieved.
Another object of the utility model is to provide a double-hearth kiln production system, which comprises a first hearth, a second hearth and an exhaust gas pressure equalizing device, wherein the first hearth and the second hearth are arranged side by side, and the output ends of the first hearth and the second hearth are connected with the exhaust gas pressure equalizing device;
the waste gas pressure equalizing device is the hearth waste gas pressure equalizing device.
Further, a dust remover is arranged at the output end of the waste gas pressure equalizing device.
Further, the dust remover is a cloth bag dust remover.
Drawings
For a clearer description of embodiments of the utility model or of solutions in the prior art, the drawings which are used in the description of the embodiments or of the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a dual chamber kiln production system in accordance with an embodiment of the present utility model;
FIG. 2 is a schematic view of a part of the structure of FIG. 1;
FIG. 3 is a schematic structural diagram of a furnace exhaust gas pressure equalizing device according to an embodiment of the present utility model;
in the figure: an exhaust gas inlet 1; an exhaust gas outlet 2; a separator 3; a first hearth 4; a second furnace 5; a dust remover 6; a dirt discharge port 7.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
The utility model is discussed in detail below in conjunction with fig. 1-3 and the specific embodiments:
as shown in fig. 1 to 3, the utility model provides a furnace exhaust gas pressure equalizing device, which comprises a sealed pressure equalizing box body, wherein an exhaust gas inlet 1 and an exhaust gas outlet 2 are formed in the pressure equalizing box body, the exhaust gas inlet 1 and the exhaust gas outlet 2 are both arranged at the top of the pressure equalizing box body, a plurality of partition plates 3 which are arranged at intervals are arranged in the pressure equalizing box body, and each partition plate 3 comprises a first partition plate, a second partition plate and an nth partition plate which are sequentially arranged from an exhaust gas inlet end to an exhaust gas outlet end.
The top of the partition plate 3 at the odd number position is fixedly connected with the upper wall of the pressure equalizing box body, so that the reverse hanging of the partition plate 3 is realized; the bottoms of the partition boards 3 at even positions are fixedly connected with the lower wall of the pressure equalizing box body, so that the vertical arrangement of the partition boards 3 is realized, a wavy channel is formed in the pressure equalizing box body, and corresponding holes are formed in the partition boards 3 for the passage of waste gas.
When the hearth waste gas pressure equalizing device is used, clear water with a certain height is stored in the pressure equalizing box body, corresponding waste gas enters from the waste gas inlet 1, part of waste gas passes through the wavy channel formed by the partition plate 3 and is finally discharged from the waste gas outlet 2; the other part of the waste gas directly penetrates through the first baffle plate, the second baffle plate and the N baffle plate in sequence and is discharged through the waste gas outlet 2.
The furnace waste gas pressure equalizing device utilizes the pressure equalizing device to slowly reduce the pressure of waste gas instantaneously released by 17-30 kpa in the double-hearth lime kiln to about 5kpa, thereby solving the problem of high waste gas discharge pressure. And the pressure of the waste gas in the pressure equalizing device is released, and meanwhile, dust mixed in the waste gas is collected in the pressure slow-down process, so that the dust concentration of the waste gas is reduced. In addition, the furnace waste gas is mixed with coarse particle dust in the waste gas to collect after flowing through the furnace waste gas pressure equalizing device, so that the dust pressure of a subsequent bag-type dust remover can be effectively relieved.
Through preliminary estimation of the applicant, the double-hearth lime kiln body is converted between the first hearth and the second hearth every 15-20 minutes, each conversion is completed within 60 seconds, and the exhaust emission in the hearth is about 1000-1300 m 3 The content of dust contained in the waste gas released each time is about 1000-2000 g, and the dust released each day is about 80 kg. Then correspondingly adoptBy using the furnace waste gas pressure equalizing device, the dust discharge phenomenon of a single double-hearth kiln can be reduced by 20-25 tons in a year, and a foundation guarantee is laid for clean production and environmental protection.
Further, the diameters of the holes on the first baffle plate, the second baffle plate and the N baffle plate are gradually reduced.
In this embodiment, baffle 3 sets up three, including first baffle, second baffle, third baffle, corresponds, and equipartition diameter is the circular hole of 200mm on first baffle, and equipartition diameter is the circular hole of 150mm on the second baffle, and equipartition diameter is the circular hole of 100mm on the third baffle, and the hole diameter is the trend that reduces gradually, reduces gradually through waste gas granule size, realizes the collection of part dust in waste gas, and dust filter effect is better.
Further, a dirt discharge port 7 is formed in the bottom of the pressure equalizing box body and is used for discharging water flow after dust is absorbed in the pressure equalizing device, and water flow is convenient to replace regularly. Meanwhile, an inspection manhole can be formed in the pressure equalizing box body, so that maintenance and overhaul are facilitated.
Furthermore, the voltage-sharing box body is connected by steel plate splicing and welding, the thickness of the steel plate is 10mm, the overall dimension of the voltage-sharing box body is a cuboid box body with the length of 6m, the width of 3m and the height of 3m, and the voltage-sharing box body is simple in structure and low in manufacturing cost.
The utility model also provides a double-hearth kiln production system based on the hearth waste gas pressure equalizing device, the system comprises a first hearth 4, a second hearth 5 and the waste gas pressure equalizing device, the first hearth 4 and the second hearth 5 are arranged side by side, and the output ends of the first hearth 4 and the second hearth 5 are connected with the waste gas pressure equalizing device; the waste gas pressure equalizing device is the hearth waste gas pressure equalizing device. The double-hearth kiln production system has all the advantages of the hearth waste gas pressure equalizing device, and is not repeated here.
Specifically, the output end of the waste gas pressure equalizing device can be further provided with a dust remover 6, the dust remover is a cloth bag dust remover, and after dust-containing waste gas in the hearth is connected into the cloth bag dust remover, the waste gas in the hearth of the double-hearth lime kiln body is changed from an unorganized emission phenomenon into an organized emission phenomenon, so that the unorganized emission phenomenon of the waste gas emission of the domestic double-hearth lime kiln is filled, the dust content is further reduced, the dust pressure of the cloth bag dust remover is relieved, and the problem of excessive dust emission of the cloth bag dust remover is solved. The filter bag of the bag-type dust collector is made of woven filter cloth or non-woven felt, dust-containing gas is filtered by utilizing the filtering effect of fiber fabrics, and when the dust-containing gas enters the bag-type dust collector, dust with large particles and large specific gravity falls down due to the effect of gravity and falls into an ash bucket, and when the gas containing finer dust passes through a filter material, the dust is blocked, so that the gas is purified.
The utility model has been further described with reference to specific embodiments, but it should be understood that the detailed description is not to be construed as limiting the spirit and scope of the utility model, but rather as providing those skilled in the art with the benefit of this disclosure with the benefit of their various modifications to the described embodiments.
Claims (10)
1. The utility model provides a furnace waste gas pressure equalizing device which characterized in that:
the pressure equalizing device comprises a sealed pressure equalizing box body, wherein an exhaust gas inlet and an exhaust gas outlet are formed in the pressure equalizing box body, a plurality of partition boards which are arranged at intervals are arranged in the pressure equalizing box body, and each partition board comprises a first partition board, a second partition board and an N partition board which are sequentially arranged from the exhaust gas inlet end to the exhaust gas outlet end;
the top of the partition board at the odd number position is fixedly connected with the upper wall of the pressure equalizing box body, so that the reverse hanging of the partition board is realized; the bottoms of the partition boards at even positions are fixedly connected with the lower wall of the pressure equalizing box body, so that the vertical arrangement of the partition boards is realized, and a wavy channel is formed in the pressure equalizing box body;
and corresponding holes are formed in the partition plate.
2. The furnace exhaust gas pressure equalizing device according to claim 1, wherein:
the diameters of the holes on the first baffle plate, the second baffle plate and the N baffle plate are gradually reduced.
3. The furnace exhaust gas pressure equalizing device according to claim 1, wherein:
and a sewage discharge port is arranged at the bottom of the pressure equalizing box body.
4. The furnace exhaust gas pressure equalizing device according to claim 1, wherein:
and the pressure equalizing box body is provided with an inspection manhole.
5. The furnace exhaust gas pressure equalizing device according to claim 1, wherein:
the pressure equalizing box body is formed by splicing and welding steel plates.
6. The furnace exhaust gas pressure equalizing device according to claim 1, wherein:
the partition boards are three.
7. The furnace exhaust gas pressure equalizing device according to claim 1, wherein:
the waste gas inlet and the waste gas outlet are both arranged at the top of the pressure equalizing box body.
8. A dual chamber kiln production system, characterized by: the system comprises a first hearth, a second hearth and an exhaust gas pressure equalizing device, wherein the first hearth and the second hearth are arranged side by side, and the output ends of the first hearth and the second hearth are connected with the exhaust gas pressure equalizing device;
the exhaust gas pressure equalizing device is a furnace exhaust gas pressure equalizing device according to any one of claims 1 to 7.
9. The dual chamber kiln production system of claim 8, wherein:
and a dust remover is arranged at the output end of the waste gas pressure equalizing device.
10. The dual chamber kiln production system of claim 9, wherein:
the dust remover is a cloth bag dust remover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321140167.9U CN219861113U (en) | 2023-05-12 | 2023-05-12 | Hearth waste gas pressure equalizing device and double-hearth kiln production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321140167.9U CN219861113U (en) | 2023-05-12 | 2023-05-12 | Hearth waste gas pressure equalizing device and double-hearth kiln production system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219861113U true CN219861113U (en) | 2023-10-20 |
Family
ID=88344860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321140167.9U Active CN219861113U (en) | 2023-05-12 | 2023-05-12 | Hearth waste gas pressure equalizing device and double-hearth kiln production system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219861113U (en) |
-
2023
- 2023-05-12 CN CN202321140167.9U patent/CN219861113U/en active Active
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