CN211056968U - Lime preheater nodulation prevention device - Google Patents
Lime preheater nodulation prevention device Download PDFInfo
- Publication number
- CN211056968U CN211056968U CN201921816877.2U CN201921816877U CN211056968U CN 211056968 U CN211056968 U CN 211056968U CN 201921816877 U CN201921816877 U CN 201921816877U CN 211056968 U CN211056968 U CN 211056968U
- Authority
- CN
- China
- Prior art keywords
- pipe
- preheater
- air cannon
- lime
- nodulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 26
- 235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 26
- 239000004571 lime Substances 0.000 title claims abstract description 26
- 230000024121 nodulation Effects 0.000 title claims abstract description 17
- 230000002265 prevention Effects 0.000 title abstract description 4
- 238000003860 storage Methods 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 230000001681 protective effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 230000006872 improvement Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 235000019738 Limestone Nutrition 0.000 description 10
- 239000006028 limestone Substances 0.000 description 10
- 238000001354 calcination Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000005422 blasting Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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Abstract
The utility model discloses a lime preheater prevents device that nodulates, the device include high-pressure storage tank, main valve, ring canal, the tuber pipe of pipeline intercommunication, and the tuber pipe is located two inside preheating chambers of preheater, connects the air cannon at tuber pipe top, and the upper portion of tuber pipe is protected by the protection frame of circular half pipe or angle steel, and the lower part is fixed by the support. And a single valve is arranged between the ring pipe and the air cannon pipe, so that the air cannon can be controlled independently. The utility model discloses a totally enclosed maintenance realizes shoveling and the automation of prevention nodulation, has improved the work environment, has guaranteed vertical pre-heater's continuous smooth production, has accomplished safety in production and the improvement of work environment.
Description
Technical Field
The utility model discloses be applied to lime production field, in particular to vertical lime preheater prevents device of nodulation.
Background
In the field of lime production, a lime preheater is a common device, and high-temperature waste gas generated by lime calcination is used for preheating limestone entering a kiln, so that the pressure of lime calcination is reduced, and energy is saved. The structure of the vertical lime preheater is shown in figure 1, limestone enters the preheater from a feeding port 1, uniform distribution of the limestone in a preheating cavity 5 is realized under the action of a feeding frame 4, and the limestone is pushed into a lime calcining kiln along an inclined plane by a push head 6 at the bottom of the preheating cavity 5. In the lime calcination production process, the temperature is higher in the vertical preheater, and in some powder preheats the back under the effect of high temperature exhaust gas flow, can not regularly fall the calcining kiln, on the refractory of vertical preheater is adhered to after softening, along with the extension of time, can form the knot 7, forms the one deck crust when serious, has hindered the pushing head 6 and has pushed away the material, has reduced the gas permeability of preheater moreover for the preheater preheats the effect and reduces.
The removal of the nodules is usually done manually with steel chisel, and for some lime preheaters it is necessary to pass through a one meter thick layer of limestone before it can reach the layer of nodules. Some steel rods can not contact the nodule layer at all and can be removed only after stopping the operation due to the limitation of the opening angle. The nodulation removing work has the disadvantages of bad operating environment and large workload, and the maintenance of each bin requires one working day to two working days, so that the labor intensity of workers is high during the maintenance, the efficiency is low, the production is severely restricted, and the nodulation removing work becomes the nodulation of the preheater.
Disclosure of Invention
The utility model solves the technical problem that: the utility model provides a vertical pre-heater prevents knot device has realized automatic relieving the knot, improves the labor efficiency, reduces intensity of labour.
The utility model adopts the technical proposal that: the lime preheater anti-accretion device comprises a high-pressure storage tank, a main valve, a ring pipe, a support, an air gun pipe and a protection frame, wherein the high-pressure storage tank, the main valve, the ring pipe and the air gun pipe are sequentially connected through a pipeline. The high-pressure storage tank provides power for removing the nodules, the air cannon pipe is located between two preheating cavities in the preheater, the top end of the air cannon pipe is connected with the air cannon, and the inner hole of the air cannon pipe is horn-shaped. The bracket is positioned between the two preheating cavities like the air cannon pipe and used for fixing the air cannon pipe; the protection frame is located right above the gun barrel and is a circular semi-tube or an angle steel used for protecting the gun barrel.
Furthermore, a single valve is arranged between the ring pipe and the air cannon pipe, so that the air cannon can be controlled independently. The main valve can also be eliminated and there is full single valve control.
The utility model has the advantages that: the utility model discloses a totally enclosed is maintained, is furnished with monitoring system, has realized that vertical pre-heater in time shovels and the automation of prevention nodulation, has stopped artifical drill rod and has shoveled, has improved the working environment. The use of the device promotes the production efficiency of lime, stabilizes the lime calcining quality, ensures the continuous and smooth production of the vertical preheater and realizes the improvement of safe production and labor environment.
Drawings
FIG. 1 is a schematic view of a vertical preheater configuration;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a schematic view of an air cannon;
wherein: 1-material inlet, 2-waste gas outlet, 3-detection device, 4-material inlet frame, 5-preheating cavity, 6-pushing head, 7-nodulation, 8-high pressure storage tank, 9-main valve, 10-ring pipe, 11-single valve, 12-bracket, 13-blast pipe and 14-protective frame.
Detailed Description
Example 1.
The lime preheater anti-clogging device of the embodiment is shown in figures 2 and 3, wherein figure 3 is a top view of figure 2, the pushing head 6 in figure 2 is in an initial state, and the pushing head 6 in figure 3 is in a working state. The lime vertical preheater is composed of a plurality of independent preheating cavities 5 which are distributed in a circular shape, and each preheating cavity is provided with a set of anti-nodulation device. The anti-caking device comprises a high-pressure storage tank 8, a main valve 9, a ring pipe 10, a support 12, an air cannon pipe 13 and a protection frame 14, wherein the high-pressure storage tank 8, the main valve 9, the ring pipe 10 and the air cannon pipe 13 are sequentially connected through a pipeline. The high-pressure storage tank 8 is a high-pressure compressed air storage tank and provides power for the air cannon pipe for removing the nodulation. The main valve 9 is an electric control valve, and the opening and closing of the electric control valve can be automatically controlled through signals. The ring pipe 10 is used for communicating each blast gun pipe 13. The air cannon pipe 13 is a heat-resistant high-strength pipe inside the preheater, is positioned between two independent preheating cavities 5, penetrates through a limestone material layer and extends to a nodulation area, the top end of the air cannon pipe points to a position of the preheater where the nodulation is easy to generate, and is connected with or welded with an air cannon in a threaded mode, the structure of the air cannon is shown in the attached drawing 4, the air cannon pipe is made of heat-resistant steel, and an inner hole of the air. The support 12 is positioned in the preheating cavity 5, is a high-temperature-resistant anti-abrasion support and is used for fixedly supporting the blast gun tube 13. The blast gun tube 13 and the bracket 12 are positioned between the pushing heads 6 of the two preheating cavities, and the pushing operation of the pushing heads 6 is not influenced. The protection frame 14 is a circular semi-tube or an angle steel, is positioned right above the blasting cap 13 and is used for protecting the blasting cap 13 from being damaged by limestone, and the surface of the blasting cap is an inclined plane and does not accumulate materials.
During the operation of the preheater, the exhaust gas outlet 2 is provided with a detection device 3 which can detect the parameters of the exhaust gas such as temperature, pressure, flow and the like and transmit the parameters to a control system. If the nodulation occurs, the pressure of the waste gas measured by the detection device 3 is reduced, the control system controls the main valve 9 to be opened through an electric signal, and the air cannon at the front end of the air cannon pipe 13 forms strong blowing by using high-pressure wind power under the action of high-pressure air compressed air. The instantaneous switch of the main valve 9 and the air cannon form instantaneous high-pressure strong blowing, so that the limestone forms high-speed vibration to remove the accretion, and the fallen accretion is pushed into the calcining kiln by the push head 6 together with the limestone to be calcined.
Example 2.
The difference between this embodiment and embodiment 1 is the difference in the control method, in embodiment 1, the whole air cannon is operated in the whole control mode, and the main valve 9 is opened, so that the power of the air cannon is insufficient, the effect of eliminating the nodule is not ideal, and this embodiment is the single control mode.
A single valve 11 is connected between each gun tube 13 and the collar 10 for individual control of the air cannon. If the nodulation occurs, the exhaust gas pressure measured by the detection device 3 is reduced, and the control system controls the main valve 9 to be opened through an electric signal. The main valve 9 is in the fully open state and is no longer momentarily closed. The single valves 11 are opened and closed one by one independently, and the air cannons at the top ends of the air cannon pipes 13 are blown by force independently and instantly to generate vibration to eradicate the nodulation. The control mode is also suitable for manual operation, and if local nodules are found from an observation hole in the upper part of the preheater, the corresponding single valve 11 is operated and started to eradicate the local nodules.
Since the main valve 9 is fully opened, it is only necessary to facilitate the inspection, and therefore, in this embodiment, the main valve 9 is not installed and all the valves are controlled by the single valve 11.
The lime preheater anti-caking device is operated in the preheater, has a full-sealing structure and does not produce dust pollution. Together with the existing monitoring and control system, the automatic removing and nodulation preventing system realizes the automation of removing and preventing nodulation, stops the manual steel chisel removing, and greatly reduces the workload. The lime stone is preheated uniformly by using the device, the lime production efficiency is improved, the lime calcining quality is stabilized, the continuous and smooth production of the vertical preheater is ensured, and the safety production and the improvement of the labor environment are realized.
Claims (5)
1. The utility model provides a lime preheater nodulation device which characterized in that: the high-pressure storage tank (8), the main valve (9), the ring pipe (10), the support (12), the blast gun pipe (13) and the protection frame (14) are sequentially connected through a pipeline; the air cannon tube (13) is positioned between the two preheating cavities (5) in the preheater, and the top end of the air cannon tube (13) is connected with an air cannon; the bracket (12) is positioned between the preheating cavities (5) and fixes the blast gun tube (13); the protection frame (14) is positioned right above the blast gun tube (13).
2. The lime preheater anti-caking device according to claim 1, characterized in that: a single valve (11) is arranged between the ring pipe (10) and the wind cannon pipe (13).
3. The lime preheater anti-caking device according to claim 1, characterized in that: the main valve (9) is replaced by a single valve (11) installed between the collar (10) and the wind cannon pipe (13).
4. The lime preheater anti-caking device according to claim 1, characterized in that: the inner hole of the air cannon is trumpet-shaped.
5. The lime preheater anti-caking device according to claim 1, characterized in that: the protective frame (14) is a circular semi-pipe or an angle steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921816877.2U CN211056968U (en) | 2019-10-28 | 2019-10-28 | Lime preheater nodulation prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921816877.2U CN211056968U (en) | 2019-10-28 | 2019-10-28 | Lime preheater nodulation prevention device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211056968U true CN211056968U (en) | 2020-07-21 |
Family
ID=71592187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921816877.2U Expired - Fee Related CN211056968U (en) | 2019-10-28 | 2019-10-28 | Lime preheater nodulation prevention device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211056968U (en) |
-
2019
- 2019-10-28 CN CN201921816877.2U patent/CN211056968U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200721 |
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| CF01 | Termination of patent right due to non-payment of annual fee |