CN219103649U - Cement rotary kiln - Google Patents
Cement rotary kiln Download PDFInfo
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- CN219103649U CN219103649U CN202320012777.4U CN202320012777U CN219103649U CN 219103649 U CN219103649 U CN 219103649U CN 202320012777 U CN202320012777 U CN 202320012777U CN 219103649 U CN219103649 U CN 219103649U
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- kiln
- head cover
- kiln head
- grate cooler
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Abstract
The utility model discloses a cement rotary kiln, which comprises a kiln head cover and a calcination part for improving the calcination effect of materials, wherein the calcination part comprises a shearing part arranged on one side of the kiln head cover, a front end plate arranged on one side of the shearing part, a tertiary air pipe arranged on one side of the kiln head cover, an extension pipe arranged on one end of the tertiary air pipe, a rotary kiln arranged on the other side of the kiln head cover, a burner arranged on one side of the kiln head cover, an AQC furnace arranged on one side of the burner, a grate cooler fixing plate arranged on one side of the bottom of the kiln head cover, a grate cooler first section arranged on one side of the grate cooler, a grate cooler third section arranged on one side of the grate cooler second section and a plurality of fans for blowing air.
Description
Technical Field
The utility model belongs to the technical field of cement, and particularly relates to a cement rotary kiln.
Background
The rotary kiln is a main device for cement production, the kiln head cover of the existing cement rotary kiln is generally divided into a large kiln head cover and a small kiln head cover, the general rotary kiln is generally composed of a rotary kiln, a tertiary air pipe, a large kiln head cover, a grate cooler and the like, and at present, as the tertiary air pipe and the head of the rotary kiln are fully mixed on one vertical face by a grate cooler fixing plate and one section of generated hot air and then enter a decomposing furnace and a kiln, the temperature difference of the tertiary air is not large, and when the hot air with the temperature of about 1200 ℃ on the grate cooler fixing plate enters the kiln, the temperature of the hot air is reduced to about 1100 ℃ to enable the burning speed of coal dust from a burner to be slow, so that the flame is thin and long and is unfavorable for the production of the large cement rotary kiln. The tertiary air temperature is high, but the temperature in the decomposing furnace is close to the decomposition temperature of calcium carbonate, the pulverized coal is flameless, the benefit brought by the high tertiary air temperature cannot be experienced, the existing large kiln is short in material residence time, high in yield, poor in material agglomeration and low in secondary air temperature, the large kiln needs short and thick flames, and the large kiln hood body is not easy to produce the short and thick flames.
Disclosure of Invention
Aiming at the problems existing in the prior art, the utility model provides a cement rotary kiln which has the advantages of high secondary air temperature, high pulverized coal combustion speed, concentrated heating and easy generation of short and thick flame, is more suitable for a large kiln, and solves the problems of short material residence time, high yield, poor material agglomeration, low secondary air temperature, short and thick flame required by the large kiln and difficult generation of short and thick flame of a kiln hood of the existing large kiln.
The utility model discloses a cement rotary kiln, which comprises a kiln head cover and a calcination part for improving the calcination effect of materials, wherein the calcination part comprises a shearing part arranged on one side of the kiln head cover, a front end plate arranged on one side of the shearing part, a tertiary air pipe arranged on one side of the kiln head cover, an extension pipe arranged at one end of the tertiary air pipe, a rotary kiln arranged on the other side of the kiln head cover, a burner arranged on one side of the kiln head cover, an AQC furnace arranged on one side of the burner, a grate cooler fixing plate arranged on the bottom side of the kiln head cover, a grate cooler first section arranged on one side of the grate cooler first section, a grate cooler third section arranged on one side of the grate cooler second section and a plurality of fans for blowing air, the tertiary air pipe and the rotary kiln are communicated with the kiln head cover, the front end plate is welded with the kiln head cover, one end of the extension pipe is welded with the tertiary air pipe, and the other end plate is welded with the front end plate, and the extension pipe is the same as the tertiary air pipe.
As the preferred one side of the kiln head cover is provided with the connecting pipe, the middle part of the connecting pipe is provided with the adjusting valve plate, and the connecting pipe is communicated with the AQC furnace and the kiln head cover.
Preferably, the tertiary air pipe is made of fireproof materials.
Preferably, the outer side of the tertiary air pipe is coated with antirust paint.
Preferably, the cross section of the regulating valve plate is H-shaped.
Preferably, the wear-resistant ceramics are arranged on two sides of the regulating valve plate.
Compared with the prior art, the utility model has the following beneficial effects:
1. the utility model cuts one side of the kiln head cover body through the cutting part, seals the cut kiln head cover through the front end plate, and connects the tertiary air pipe and the kiln head cover through the extension pipe, the top of the kiln head cover is manufactured again without remanufacturing, waste is reduced, 1400 DEG of materials fall from the interior of the kiln to the grate cooler fixing plate to exchange heat with cooling air at the moment, the air is heated to 1200 DEG, the hot air of 1200 degrees fully enters the kiln and is used as combustion air, the temperature loss is avoided, at this time, the material is cooled to 900 degrees, then the first section of the grate cooler is subjected to heat exchange with cold air, the material is cooled to 500 degrees, the air of 500 degrees is heated to 800 degrees, the material of 500 degrees enters the second section 11 of the grate cooler and is subjected to heat exchange with cooling air, the material is cooled to about 200 degrees and then enters the third section of the grate cooler, the cold air is heated to a degree and enters the AQC furnace, the cold water is heated to 300 degrees, so that the hot air generated by the fixed plate of the grate cooler is free from temperature loss, and fully enters the kiln and is used as combustion air, the temperature of secondary air is high, heat is concentrated, and short and thick flames are easy to generate.
2. According to the utility model, through arranging the connecting pipe and the adjusting valve plate, the control switch can be adjusted through adjusting the valve plate, hot air generated by the second section of the grate cooler enters the AQC furnace, and the hot air generated by the second section of the grate cooler is mixed with the hot air of the third section, so that the high temperature of water vapor in the AQC furnace is ensured, equipment is protected, the air release of the AQC furnace is avoided, the waste is reduced, and the cost is reduced.
3. According to the utility model, the tertiary air pipe is provided with the fireproof material, so that the tertiary air pipe with overhigh temperature can be prevented from being damaged by high temperature.
4. According to the utility model, the outside of the tertiary air pipe is coated with the antirust paint, so that the outside of the tertiary air pipe can be prevented from rusting.
5. The utility model can play a supporting role by arranging the section of the adjusting valve plate to be H-shaped.
6. The utility model can prevent the damage of the regulating valve after long-time use by arranging the wear-resistant ceramic.
Drawings
FIG. 1 is a schematic diagram of a structure provided by an embodiment of the present utility model;
FIG. 2 is a left side view provided by an embodiment of the present utility model;
FIG. 3 is a schematic view of the structure at A-A in FIG. 2 provided by an embodiment of the present utility model;
fig. 4 is a schematic structural view of a regulating valve plate according to an embodiment of the present utility model.
In the figure: 1. a kiln head cover; 2. a shearing part; 3. a front end plate; 4. a tertiary air duct; 5. an extension tube; 6. a rotary kiln; 7. a burner; 8. an AQC furnace; 9. a grate cooler fixing plate; 10. a grate cooler section; 11. a second section of the grate cooler; 12. three sections of the grate cooler; 13. a blower; 14. a connecting pipe; 15. adjusting the valve plate; 16. wear-resistant ceramics.
Detailed Description
For a further understanding of the utility model, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings.
The structure of the present utility model will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 4, the cement rotary kiln provided by the embodiment of the utility model comprises a kiln head cover 1 and a calcination part for improving the calcination effect of materials, wherein the calcination part comprises a shearing part 2 arranged on one side of the kiln head cover 1, a front end plate 3 arranged on one side of the shearing part 2, a tertiary air pipe 4 arranged on one side of the kiln head cover 1, an extension pipe 5 arranged at one end of the tertiary air pipe 4, a rotary kiln 6 arranged on the other side of the kiln head cover 1, a burner 7 arranged on one side of the kiln head cover 1, an AQC furnace 8 arranged on one side of the burner 7, a grate cooler fixing plate 9 arranged on one side of the bottom of the kiln head cover 1, a grate cooler second section 11 arranged on one side of the grate cooler second section 10, a grate cooler third section 12 arranged on one side of the grate cooler second section 11 and a plurality of fans 13 for blowing air, the tertiary air pipe 4 and the rotary kiln 6 are communicated with the kiln head cover 1, the front end plate 3 is welded with the kiln head cover 1, one end of the extension pipe 5 is welded with the tertiary air pipe 4, and the other end of the extension pipe 5 is welded with the front end plate 3.
The scheme is adopted: through arranging the kiln head cover 1, the shearing part 2, the front end plate 3, the tertiary air pipe 4, the extension pipe 5, the rotary kiln 6, the burner 7, the AQC furnace 8, the grate cooler fixing plate 9, the grate cooler first section 10, the grate cooler second section 11, the grate cooler third section 12 and the fan 13, one side of the kiln head cover 1 body is sheared through the shearing part 2, the sheared kiln head cover 1 is sealed through the front end plate 3, the tertiary air pipe 4 and the kiln head cover 1 are connected through the extension pipe 5, the top of the kiln head cover 1 is manufactured again without being manufactured again, waste is reduced, 1400 DEG of materials fall onto the grate cooler fixing plate 9 from the inside of the kiln to exchange heat with cooling air, the air is heated to 1200 ℃, the hot air of 1200 degrees fully enters the kiln and is used as combustion air, the temperature loss is not caused, at the moment, the material is cooled to 900 degrees, then the first section 10 of the grate cooler is subjected to heat exchange with cold air, the material is cooled to 500 degrees, the air is heated to 800 degrees, the material of 500 degrees enters the second section 11 of the grate cooler and is subjected to heat exchange with cooling air, the material is cooled to about 200 degrees and then enters the third section 12 of the grate cooler, the cold air is heated to 300 degrees and enters the air pipe into the AQC furnace 8, the cold water is heated to 300 degrees, the hot air generated by the fixed plate 9 of the grate cooler is not subjected to temperature loss, and the hot air fully enters the kiln and is used as combustion air, so that the temperature of secondary air is high, heat is concentrated, and short and thick flames are easy to generate.
Referring to fig. 3, a connecting pipe 14 is arranged at one side of the kiln head cover 1, an adjusting valve plate 15 is arranged in the middle of the connecting pipe 14, and the connecting pipe 14 is communicated with the AQC furnace 8 and the kiln head cover 1.
The scheme is adopted: through setting up connecting pipe 14 and adjusting valve plate 15, can adjust control switch through adjusting valve plate 15, through the hot air entering into among the AQC stove 8 of the second section 11 of comb cold machine, through the hot air mixing of the hot air and the three-section of second section 11 of comb cold machine production, guarantee that the vapor temperature in the AQC stove 8 is high, protective apparatus avoids the gassing of AQC stove 8 simultaneously, reduces extravagant, reduce cost.
Referring to fig. 1, the tertiary air duct 4 is made of fireproof materials.
The scheme is adopted: by setting the tertiary air duct 4 to be made of fireproof materials, the tertiary air duct 4 with too high temperature can be prevented from being damaged by high temperature.
Referring to fig. 1, the outer side of the tertiary air pipe 4 is coated with antirust paint.
The scheme is adopted: by providing the tertiary air duct 4 with the rust inhibitive paint on the outside, rust on the outside of the tertiary air duct 4 can be prevented.
Referring to fig. 3, the cross section of the regulator valve plate 15 is H-shaped.
The scheme is adopted: by providing the cross section of the regulator valve plate 15 in the shape of an H, a supporting function can be achieved.
Referring to fig. 4, wear-resistant ceramics 16 are disposed on both sides of the regulating valve plate 15.
The scheme is adopted: by providing the wear-resistant ceramic 16, damage to the regulator valve after long use can be prevented.
When the kiln head cover 1 is used, firstly, one side of the kiln head cover 1 body is sheared through the shearing part 2, the sheared kiln head cover 1 is sealed through the front end plate 3, the tertiary air pipe 4 is connected with the kiln head cover 1 through the extension pipe 5, the top of the kiln head cover 1 is manufactured again, the waste is reduced, when 1400 DEG of materials fall into the grate cooler fixing plate 9 from the inside of the kiln to exchange heat with cooling air, the air is heated to 1200 DEG, 1200 DEG of hot air can be completely introduced into the kiln to serve as combustion air, the temperature of secondary air is ensured, the temperature loss is not caused, then the materials are cooled to 900 DEG, then the grate cooler first section 10 exchanges heat with cold air, the materials are cooled to 500 DEG of air and are heated to 800 DEG, 500 DEG of materials enter the grate cooler second section 11 and are exchanged heat with the cooling air, the materials are cooled to about 200 DEG of the grate cooler third section 12, the cold air is heated to 300 DEG of the air pipe and enters the AQC furnace 8, the hot air is heated to 300 DEG of the AQC furnace 8, then the hot air enters the AQC furnace 8, the temperature in the AQC furnace 8 is lower than the AQC furnace 8, when the temperature in the AQC furnace 8 is lower than the temperature of the AQC furnace 8, the temperature is lower than the temperature of the air is lower than the air 8, the temperature of the air is opened to the air conditioner first section 10 and the AQC is prevented from entering the AQC 8, and the AQC 8 is lower than the temperature of the temperature 8.
To sum up: this kiln of cement rotary kiln 6 through setting up kiln hood 1, shearing part 2, front end plate 3, tertiary air pipe 4, extension pipe 5, rotary kiln 6, combustor 7, AQC stove 8, comb cold machine fixed plate 9, comb cold machine one section 10, comb cold machine two sections 11, comb cold machine three sections 12 and fan 13, has solved the current big kiln material dwell time short, and output is big, and the material grain is poor, and the overgrate air temperature is low, and big kiln needs short thick flame, but the kiln hood 1 is difficult to produce the problem of short thick flame.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a cement rotary kiln, includes kiln head hood (1) and is used for improving the calcination part of material calcination effect, its characterized in that: the calcination part comprises a shearing part (2) arranged on one side of a kiln head cover (1), a front end plate (3) arranged on one side of the shearing part (2), a tertiary air pipe (4) arranged on one side of the kiln head cover (1), an extension pipe (5) arranged on one side of the tertiary air pipe (4), a rotary kiln (6) arranged on the other side of the kiln head cover (1), a combustor (7) arranged on one side of the kiln head cover (1), an AQC furnace (8) arranged on one side of the combustor (7), a grate cooler fixing plate (9) arranged on one side of the bottom of the kiln head cover (1), a grate cooler first section (10) arranged on one side of the grate cooler first section (10), a grate cooler third section (12) arranged on one side of the grate cooler second section (11) and a plurality of fans (13) used for blowing, wherein the tertiary air pipe (4) and the rotary kiln (6) are communicated with the kiln head cover (1), the front end plate (3) is welded with the kiln head cover (1), one end of the extension pipe (5) is welded with the tertiary air pipe (4), and the front end plate (3) is welded with the front end plate (3).
2. A rotary cement kiln according to claim 1, wherein: one side of the kiln head cover (1) is provided with a connecting pipe (14), the middle part of the connecting pipe (14) is provided with an adjusting valve plate (15), and the connecting pipe (14) is communicated with the AQC furnace (8) and the kiln head cover (1).
3. A rotary cement kiln according to claim 1, wherein: the tertiary air pipe (4) is made of fireproof materials.
4. A rotary cement kiln according to claim 1, wherein: the outer side of the tertiary air pipe (4) is coated with antirust paint.
5. A rotary cement kiln according to claim 2, wherein: the section of the adjusting valve plate (15) is H-shaped.
6. A rotary cement kiln according to claim 2, wherein: wear-resistant ceramics (16) are arranged on two sides of the adjusting valve plate (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320012777.4U CN219103649U (en) | 2023-01-04 | 2023-01-04 | Cement rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320012777.4U CN219103649U (en) | 2023-01-04 | 2023-01-04 | Cement rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219103649U true CN219103649U (en) | 2023-05-30 |
Family
ID=86453037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320012777.4U Active CN219103649U (en) | 2023-01-04 | 2023-01-04 | Cement rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219103649U (en) |
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2023
- 2023-01-04 CN CN202320012777.4U patent/CN219103649U/en active Active
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