CN219776302U - Air supply device of lime shaft kiln - Google Patents
Air supply device of lime shaft kiln Download PDFInfo
- Publication number
- CN219776302U CN219776302U CN202320961313.8U CN202320961313U CN219776302U CN 219776302 U CN219776302 U CN 219776302U CN 202320961313 U CN202320961313 U CN 202320961313U CN 219776302 U CN219776302 U CN 219776302U
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- Prior art keywords
- combustion
- air
- supporting
- shaft kiln
- supporting air
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- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 38
- 235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 38
- 239000004571 lime Substances 0.000 title claims abstract description 38
- 238000002485 combustion reaction Methods 0.000 claims abstract description 104
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000005457 optimization Methods 0.000 abstract description 4
- 238000005245 sintering Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 22
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 16
- 239000003345 natural gas Substances 0.000 description 8
- 238000001354 calcination Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Furnace Details (AREA)
Abstract
The utility model discloses a gas supply device of a lime shaft kiln, which relates to the technical field of lime sintering and comprises the following components: the combustion beam transversely penetrates through the lime shaft kiln, and is provided with a plurality of burners which extend from the middle part of the combustion beam to two sides and are distributed at intervals; the number of the gas branch pipes is the same as that of the burners, and a plurality of gas branch pipes extend into the combustion beam from two ends of the combustion beam respectively to be connected with the burners; the first combustion-supporting assembly comprises two first combustion-supporting air pipes, and the two first combustion-supporting air pipes extend into the outer side of the outermost burner of the combustion beam from the two ends of the combustion beam respectively; the second combustion-supporting assembly comprises two second combustion-supporting air pipes, and the two second combustion-supporting air pipes extend into the outer sides of the two innermost burners of the combustion beam from the two ends of the combustion beam respectively; through setting up first combustion-supporting tuber pipe and second combustion-supporting tuber pipe, with the interruption and the terminal of the nozzle group of combustion-supporting air direct feed burning beam, realize the ratio optimization of combustion-supporting air of different positions nozzle gas of combustion beam.
Description
Technical Field
The utility model relates to the technical field of lime sintering, in particular to an air supply device of a lime shaft kiln.
Background
The lime shaft kiln is mainly used for sintering produced lime, and in order to meet the requirement of environment-friendly emission, the coke-lime-mixing shaft kiln is generally changed into a beam-type natural gas shaft kiln. Each lime shaft kiln is provided with two layers of combustion beams, combustion air enters the combustion beam cavity through a beam head combustion air pipeline, then enters the combustion beam cavity through a round hole corresponding to a natural gas burner on the combustion beam body, and is mixed with combustion air entering the combustion beam cavity from combustion Liang Liangtou and flowing out through an air outlet at the side of the combustion beam under the injection action of natural gas, so that lime is produced.
Because natural gas belongs to high-calorific-value gas, the air-fuel ratio is 10:1, in the production process, the air supply mode of supplying combustion air from the beam head part of the combustion beam leads to that the flow rate of the combustion air from the air outlet hole at the central part of the combustion beam is lower than that at the peripheral part, and because the air quantity of the natural gas round hole burner in the middle of the combustion beam is less, the air-fuel ratio matching of different parts of the whole combustion beam is unreasonable, and the combustion effect of the natural gas is poor; in addition, the blanking speed of the material at the central part in the shaft kiln is higher than that of the peripheral material, and the heat required by calcining at the central part is higher than that at the peripheral part, so that the quality stability and improvement of lime are influenced.
Disclosure of Invention
The utility model aims to provide a gas supply device of a lime shaft kiln, which solves the technical problems of unreasonable matching of air-fuel ratios of different parts of the whole combustion beam and poor natural gas combustion effect caused by small air quantity at a burner of the combustion beam in the lime shaft kiln to a certain extent.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a gas supply device of a lime shaft kiln, which comprises: a gas supply device for supplying gas to an ash shaft kiln, the gas supply device comprising: the combustion beam transversely penetrates through the lime shaft kiln, and is provided with a plurality of burners which extend from the middle part of the combustion beam to two sides and are distributed at intervals; the gas branch pipes are the same as the burners in number, and extend into the combustion beam from two ends of the combustion beam respectively to be connected with the burners; the first combustion-supporting assembly comprises two first combustion-supporting air pipes, and the two first combustion-supporting air pipes extend into the outer side of the outermost burner of the combustion beam from the two ends of the combustion beam respectively; the second combustion-supporting assembly comprises two second combustion-supporting air pipes, and the two second combustion-supporting air pipes extend into the outer sides of the two innermost burners of the combustion beam from the two ends of the combustion beam respectively; and the air supply assembly is respectively connected with the first combustion-supporting air pipe and the second combustion-supporting air pipe.
In some embodiments, the air supply device further comprises an adjustment assembly for adjusting the air intake of the first and second combustion air ducts.
In some embodiments, the adjustment assembly comprises; the first adjusting unit is used for adjusting the air inlet quantity of the first combustion-supporting air pipe; and the second adjusting unit is used for adjusting the air inlet quantity of the second combustion-supporting air pipe.
In some embodiments, the first adjustment unit includes a first butterfly valve disposed at the first combustion air conduit.
In some embodiments, the second adjustment unit includes a second butterfly valve disposed at the first combustion air duct.
In some embodiments, the first combustion-supporting air duct has a pipe diameter Φ100mm.
In some embodiments, the second combustion air duct has a pipe diameter Φ100mm.
In some embodiments, the burner is provided with 10 to 16 burners.
In some embodiments, the first combustion air conduit is welded within the combustion beam.
In some embodiments, the second combustion air conduit is welded within the combustion beam.
According to the technical scheme, the utility model has at least the following advantages and positive effects:
according to the gas supply device of the lime shaft kiln, through the arrangement of the first combustion-supporting air pipe and the second combustion-supporting air pipe, combustion-supporting air is directly fed into the interruption and the tail end of the burner group of the combustion beam, so that the proportion optimization of burner gas and combustion-supporting air at different positions of the combustion beam is realized, the unreasonable proportion of combustion-supporting air burner gas and combustion-supporting air at different positions caused by unreasonable distribution of combustion-supporting air at the center part and the side part of the combustion beam is eliminated, and the problem of unbalanced calcination caused by insufficient combustion-supporting air at the center in the kiln in the production process is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structure view of an air supply device of a lime shaft kiln according to an embodiment;
fig. 2 is a schematic view of a structure of a combustion beam of an air supply device of a lime shaft kiln according to an embodiment.
The reference numerals are explained as follows: 1. a combustion beam; 2. a first combustion-supporting air pipe; 3. a second combustion-supporting air pipe; 4. a gas branch pipe; 5. a lime shaft kiln; 6. burning materials; 7. and (3) a burner.
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 be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or a third "may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Please refer to fig. 1.
Fig. 1 is a schematic structural view of an air supply device for a lime shaft kiln according to an embodiment of the present utility model, as shown in the drawings, the device includes: the lime shaft kiln 5, wherein combustion materials 6 are filled in the lime shaft kiln main body 5; the combustion beam 1 transversely penetrates through the lime shaft kiln, and a plurality of burners 7 are arranged outside the middle part of the combustion beam 1 from inside to outside; the number of the gas branch pipes 4 is the same as that of the burners 7, and a plurality of the gas branch pipes 4 extend into the combustion beam 1 from two ends of the combustion beam 1 respectively to be connected with the burners 7; the first combustion-supporting assembly comprises two first combustion-supporting air pipes 2, and the two first combustion-supporting air pipes 2 extend into the outer side of the outermost burner 7 of the combustion beam 1 from the two ends of the combustion beam 1 respectively; the second combustion-supporting assembly comprises two second combustion-supporting air pipes 3, and the two second combustion-supporting air pipes 3 extend into the outer sides of two burners 7 at the innermost side of the combustion beam 1 from the two ends of the combustion beam 1 respectively; and the air supply assembly is respectively connected with the first combustion-supporting air pipe 2 and the second combustion-supporting air pipe 3. Through setting up first combustion-supporting tuber pipe 2 and second combustion-supporting tuber pipe 3, the interruption and the end of the 7 groups of nozzle of directly sending into combustion air in combustion beam 1 realize the optimization of the proportion of combustion air and 7 gas of different positions of combustion beam 1 nozzle, eliminated the combustion air nozzle 7 gas of different positions and the combustion air proportion unreasonable because of combustion beam 1 central part and the unreasonable combustion air distribution of limit portion lead to, solved the unbalanced problem of calcination that causes because of the central combustion air is not enough in the kiln in the production process.
In this embodiment, 12 burners 7 are provided, the first combustion-supporting air pipes 2 extend from two ends of the combustion beam 1 to one side of the outermost burner 7 of the combustion beam 1 near the kiln wall of the lime shaft kiln 5, oxygen is provided for the outer burner 7, and two second combustion-supporting air pipes 3 extend from two ends of the combustion beam 1 to the outer sides of the innermost two burners 7 of the combustion beam 1, respectively, and oxygen is provided for the inner burner 7.
In this embodiment, the air supply device further includes an adjusting component, where the adjusting component is used to adjust the air intake volumes of the first combustion-supporting air duct 2 and the second combustion-supporting air duct 3. The combustion air flow of the first combustion air pipe 2 and the second combustion air pipe 3 is controlled, so that the problem of unbalanced air-fuel ratio of the burners 7 in different areas of the combustion beam 1 is solved, and the condition of a calcining area temperature field in the normal production process of the shaft kiln is met.
In this embodiment, the adjustment assembly includes; the first adjusting unit is used for adjusting the air inlet quantity of the first combustion-supporting air pipe 2; and the second adjusting unit is used for adjusting the air inlet quantity of the second combustion-supporting air pipe 3.
In this embodiment, the first adjusting unit includes a first butterfly valve, and the first butterfly valve is disposed in the first combustion air duct 2.
In some embodiments, the first adjusting unit comprises a second butterfly valve, which is arranged at the first combustion air duct 2.
In the implementation process of this embodiment, the first butterfly valve and the second butterfly valve may also be other flow regulating valves.
In this embodiment, the pipe diameter of the first combustion-supporting air pipe 2 is Φ100mm. The pipe diameter of the second combustion-supporting air pipe 3 is phi 100mm.
Please refer to fig. 2.
In this embodiment, the number of the burners 7 is 12, the number of the gas branch pipes 4 is 12, 6 gas branch pipes 4 extend into the combustion beam 1 from the left end of the combustion beam 1, are connected with 6 burners 7 near the left side of the combustion beam 1, 6 gas branch pipes 4 extend into the combustion beam 1 from the right end of the combustion beam 1, are connected with 6 burners 7 near the right side of the combustion beam 1, and the gas branch pipes 4 are used for providing burnt natural gas for the burners 7.
In this embodiment, the first combustion-supporting air duct 2 is welded in the combustion beam 1. The second combustion-supporting air pipe 3 is welded in the combustion beam 1, so that the connection is stable, and the air supply device is not easy to loosen.
In this embodiment, the first combustion-supporting air duct 2 and the second combustion-supporting air duct 3 are made of pipes made of high-temperature-resistant and wear-resistant metal materials, and specifically, the first combustion-supporting air duct 2 and the second combustion-supporting air duct 3 are made of galvanized pipes.
According to the technical scheme, the utility model has at least the following advantages and positive effects:
according to the gas supply device of the lime shaft kiln, through the arrangement of the first combustion-supporting air pipe and the second combustion-supporting air pipe, combustion-supporting air is directly fed into the interruption and the tail end of the burner group of the combustion beam, so that the proportion optimization of burner gas and combustion-supporting air at different positions of the combustion beam is realized, the unreasonable proportion of combustion-supporting air burner gas and combustion-supporting air at different positions caused by unreasonable distribution of combustion-supporting air at the center part and the side part of the combustion beam is eliminated, and the problem of unbalanced calcination caused by insufficient combustion-supporting air at the center in the kiln in the production process is solved.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.
Claims (10)
1. A gas supply device for a lime shaft kiln for supplying gas to the lime shaft kiln, the gas supply device comprising:
the combustion beam transversely penetrates through the lime shaft kiln, and is provided with a plurality of burners which extend from the middle part of the combustion beam to two sides and are distributed at intervals;
the gas branch pipes are the same as the burners in number, and extend into the combustion beam from two ends of the combustion beam respectively to be connected with the burners;
the first combustion-supporting assembly comprises two first combustion-supporting air pipes, and the two first combustion-supporting air pipes extend into the outer side of the outermost burner of the combustion beam from the two ends of the combustion beam respectively;
the second combustion-supporting assembly comprises two second combustion-supporting air pipes, and the two second combustion-supporting air pipes extend into the outer sides of the two innermost burners of the combustion beam from the two ends of the combustion beam respectively;
and the air supply assembly is respectively connected with the first combustion-supporting air pipe and the second combustion-supporting air pipe.
2. A lime shaft kiln air supply apparatus as claimed in claim 1, further comprising an adjustment assembly for adjusting the air intake of the first and second combustion air ducts.
3. A lime shaft kiln gas supply apparatus as claimed in claim 2, wherein the adjustment assembly comprises;
the first adjusting unit is used for adjusting the air inlet quantity of the first combustion-supporting air pipe;
and the second adjusting unit is used for adjusting the air inlet quantity of the second combustion-supporting air pipe.
4. A lime shaft kiln gas supply apparatus according to claim 3, wherein the first regulating unit comprises a first butterfly valve provided in the first combustion air duct.
5. A lime shaft kiln gas supply apparatus according to claim 3, wherein the second regulating unit comprises a second butterfly valve provided in the first combustion air duct.
6. The air supply device of the lime shaft kiln according to claim 1, wherein the pipe diameter of the first combustion-supporting air pipe is phi 100mm.
7. The air supply device of the lime shaft kiln according to claim 1, wherein the pipe diameter of the second combustion-supporting air pipe is phi 100mm.
8. The gas supply device for a lime shaft kiln according to claim 1, wherein 10 to 16 burners are provided.
9. A gas supply device for a lime shaft kiln according to claim 1, wherein the first combustion air duct is welded to the combustion beam.
10. A gas supply device for a lime shaft kiln according to claim 1, wherein the second combustion air duct is welded to the combustion beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320961313.8U CN219776302U (en) | 2023-04-25 | 2023-04-25 | Air supply device of lime shaft kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320961313.8U CN219776302U (en) | 2023-04-25 | 2023-04-25 | Air supply device of lime shaft kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219776302U true CN219776302U (en) | 2023-09-29 |
Family
ID=88130699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320961313.8U Active CN219776302U (en) | 2023-04-25 | 2023-04-25 | Air supply device of lime shaft kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219776302U (en) |
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2023
- 2023-04-25 CN CN202320961313.8U patent/CN219776302U/en active Active
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