CN220750842U - Shaft kiln exhaust treatment device - Google Patents
Shaft kiln exhaust treatment device Download PDFInfo
- Publication number
- CN220750842U CN220750842U CN202322291115.8U CN202322291115U CN220750842U CN 220750842 U CN220750842 U CN 220750842U CN 202322291115 U CN202322291115 U CN 202322291115U CN 220750842 U CN220750842 U CN 220750842U
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- Prior art keywords
- exhaust pipe
- exhaust
- waste gas
- shaft kiln
- treatment device
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- 239000000428 dust Substances 0.000 claims abstract description 61
- 238000001816 cooling Methods 0.000 claims description 43
- 230000001681 protective effect Effects 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 239000002912 waste gas Substances 0.000 abstract description 43
- 239000007789 gas Substances 0.000 abstract description 22
- 238000001354 calcination Methods 0.000 description 6
- 240000006909 Tilia x europaea Species 0.000 description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 4
- 235000011941 Tilia x europaea Nutrition 0.000 description 4
- 239000004571 lime Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010891 toxic waste Substances 0.000 description 1
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model relates to the technical field of shaft kiln waste gas treatment, in particular to a shaft kiln waste gas treatment device, which comprises a shaft kiln body, wherein an exhaust port is arranged at the top of the shaft kiln body, the right side of the exhaust port is connected with a waste gas pipe, the waste gas pipe is in a three-section shape, the whole is Z-shaped, the length of the waste gas pipe in the horizontal direction is smaller than that of the waste gas pipe in the vertical direction, the length of the waste gas pipe in the vertical direction is matched with the height of the shaft kiln body so as to ensure that the height of the waste gas pipe in the horizontal direction positioned at the lower part is positioned above the ground, and one end, far away from the exhaust port, of a supporting frame waste gas pipe for supporting the waste gas pipe is arranged below the waste gas pipe, and a dry dust remover for removing dust from the waste gas is connected. The problem of because of exhaust-gas temperature is too high, current exhaust-gas treatment device can't effectually cool down waste gas to influence follow-up dust removal work is solved.
Description
Technical Field
The utility model relates to the technical field of shaft kiln waste gas treatment, in particular to a shaft kiln waste gas treatment device.
Background
The vertical kiln is a cylindrical kiln body, is a kiln formed by a steel shell with a vertical axis and a refractory brick lining, and is widely used for calcining various refractory raw materials and lime, for example, when a common lime vertical kiln works, calcined materials are added from the top of the kiln, the kiln bottom is calcined, external cold air enters from the bottom of the kiln during calcination and exchanges heat with cold air blown by the calcined high-temperature lime and the kiln bottom, lime blocks are cooled to about 30-60 ℃, preheated air is used as combustion air for burning with coke to push upwards, the added materials are preheated in the middle of the vertical kiln, finally, waste gas is continuously discharged out of the vertical kiln from the top of the kiln without treatment, and the toxic waste gas is directly discharged to cause air pollution and is harmful to human health through an atmospheric circulation system, so that the waste gas is required to be completely introduced into a dust collector through a draught fan for purification, and then discharged into the atmosphere from a chimney to reach the standard;
the waste gas temperature of the shaft kiln is generally higher and reaches 100-250 ℃, the temperature periodically fluctuates along with feeding, calcining and discharging, and as the waste gas temperature is too high, if the waste gas directly enters a waste gas treatment device, the waste gas is possibly damaged, so that the waste gas is required to be subjected to cooling treatment firstly, the waste gas in the market is mostly subjected to indirect cooling air cooling in a long-distance pipeline conveying mode, the waste gas is subjected to dust removal and cooling by utilizing pipeline wall heat dissipation and spraying water, but the method consumes more steel and occupies a large area, and meanwhile, dust of the lime shaft kiln is hydrophilic and cohesive dust, so that wet dust removal is not recommended; and secondly, cooling by doping external cold air into high-temperature waste gas to achieve the purpose of cooling, wherein the air amount doped with the external cold air is fixed and cannot be adjusted according to the calcination process, so that the waste gas amount is greatly increased after the cold air is doped, the matching air amount is increased, the specifications of follow-up dust removing equipment and fans are enlarged, and the cost is increased.
Disclosure of Invention
In order to remedy the defects, the utility model provides the following technical scheme: the utility model provides a shaft kiln exhaust treatment device, includes the shaft kiln body, the shaft kiln body top is equipped with the gas vent, and the right side of gas vent is connected with the exhaust pipe, and the exhaust pipe is the whole "Z" shape of syllogic, and the exhaust pipe length of horizontal direction is less than the exhaust pipe length of vertical direction, and the exhaust pipe length of vertical direction and the high looks adaptation of shaft kiln body to guarantee that the exhaust pipe height of horizontal direction that is located the lower part is located above ground, and the one end that the exhaust pipe kept away from the gas vent is connected with the dry-type dust remover that is used for giving the waste gas dust removal;
the exhaust pipe section is square, is equipped with the cooling fan that is used for giving intraductal high temperature waste gas cooling on the outer wall of exhaust pipe, and cooling fan is located the diapire outside and the exhaust pipe lateral wall outside of vertical direction of exhaust pipe of horizontal direction.
Preferably, the cooling fans are not less than four and penetrate through the outer wall of the exhaust pipe, the cooling fans comprise rectangular outer frames, the outer frames and the outer wall of the exhaust pipe are fixedly connected through nuts, and a one-way air inlet, a one-way fan and a protective net for isolating external foreign matters are sequentially arranged in the outer frames.
Preferably, the unidirectional air inlet comprises a rectangular frame fixed on the inner wall of the outer frame, a plurality of strip-shaped fan blades capable of being opened towards the inside of the exhaust pipe are arranged on the rectangular frame, and two ends of each strip-shaped fan blade are rotatably fixed on the inner wall of the outer frame through round rods.
Preferably, the unidirectional fan is located between the unidirectional air inlet and the protective net, and the blowing direction of the unidirectional fan is towards the inside of the exhaust pipe.
Preferably, the cooling fan is arranged on the bottom wall of the lower horizontal exhaust pipe at a position corresponding to the lower end of the vertical exhaust pipe; the cooling fans are arranged on the side wall of the exhaust pipe in the vertical direction in a staggered and opposite mode.
Preferably, a supporting frame for supporting the exhaust pipe is arranged below the exhaust pipe.
Preferably, the dry dust collector is a bag dust collector, the dry dust collector comprises a dust collection box body, a funnel-shaped dust collection hopper is arranged below the dust collection box body, an ash outlet is arranged below the funnel-shaped dust collection hopper, and a bracket is arranged below the dust collection box body;
preferably, the tail end of the exhaust pipe, which is far away from the exhaust port, stretches into the side wall of the funnel-shaped ash collecting hopper, and the top of the dry dust remover is provided with an air outlet for discharging filtered exhaust gas.
Advantageous effects
Compared with the prior art, the utility model provides a shaft kiln waste gas treatment device, which has the following beneficial effects:
set up a plurality of cooling fans that can control alone on the exhaust pipe, when the waste gas of high temperature gets into the exhaust pipe in, start corresponding quantity cooling fan, inhale outside cold air and intraductal waste gas through cooling fan and mix, realize the purpose of cooling, can prevent to inhale too much cold air when the waste gas volume is little according to the cycle adjustment air input of calcining, bring the burden for follow-up dust removal work, also need not simultaneously to carry out dust removal cooling through adopting long distance pipeline to carry and spray the water, practiced thrift the consumptive material, saved area.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
FIG. 1 is a schematic view of a shaft kiln and an exhaust gas treatment device according to the present utility model;
FIG. 2 is a schematic view of a cooling fan according to the present utility model;
FIG. 3 is a schematic diagram of a unidirectional air intake structure according to the present utility model;
fig. 4 is a schematic diagram showing the configuration of the dry dust collector and the exhaust pipe of the present utility model.
Reference numerals illustrate:
1. a shaft kiln body;
2. an exhaust port;
3. an exhaust pipe;
4. a dry dust collector; 41. a dust removal box; 42. a funnel-shaped ash collecting hopper; 43. an ash outlet; 44. an air outlet;
5. a cooling fan; 51. an outer frame; 52. a one-way air inlet; 521. a rectangular frame; 522. a strip-shaped fan blade; 523. a round bar; 53. a unidirectional fan; 54. a protective net;
6. and (5) supporting frames.
Detailed Description
The embodiments of the present application will be described in detail below with reference to the accompanying drawings and examples, so that the implementation process of how the technical means are applied to solve the technical problems and achieve the technical effects of the present application can be fully understood and implemented accordingly.
Fig. 1-4 show an embodiment of the utility model, a vertical kiln exhaust gas treatment device, including a vertical kiln body 1, an exhaust port 2 is arranged at the top of the vertical kiln body 1, an exhaust gas pipe 3 is connected to the right side of the exhaust port 2, the exhaust gas pipe 3 is in a three-section shape, the length of the exhaust gas pipe 3 in the horizontal direction is smaller than that of the exhaust gas pipe 3 in the vertical direction, the length of the exhaust gas pipe 3 in the vertical direction is matched with the height of the vertical kiln body 1, so as to ensure that the height of the exhaust gas pipe 3 in the horizontal direction at the lower part is above the ground, one end of the exhaust gas pipe 3 far away from the exhaust port 2 is connected with a dry dust collector 4 for dust removal of exhaust gas, and when the vertical kiln is calcined, the exhaust gas is discharged from the vertical kiln through the exhaust port 2 at the top of the vertical kiln into the exhaust gas pipe 3, cooled by the exhaust gas pipe 3, then enters the dry dust collector 4 for purification, and then is discharged into the air;
the cross-section of exhaust pipe 3 is square, be equipped with the cooling fan 5 that is used for giving intraductal high temperature waste gas cooling on the outer wall of exhaust pipe 3, cooling fan 5 is located the diapire outside of exhaust pipe 3 of horizontal direction and the exhaust pipe 3 lateral wall outside of vertical direction, when waste gas gets into in the exhaust pipe 3, the temperature is higher, start cooling fan 5 this moment, mix with intraductal waste gas through cooling fan 5 outside the cold air of suction, realize the purpose of cooling, cooling fan 5 sets up a plurality ofly, and can be controlled alone, can adjust the air input according to the cycle of calcining, prevent to inhale too much cold air when the waste gas volume is little, bring the burden for follow-up dust removal work.
The cooling fan 5 runs through in exhaust pipe 3 outer wall, cooling fan 5 includes the frame 51 of rectangle, realize fixed connection through the nut between frame 51 and the exhaust pipe 3 outer wall, be equipped with unidirectional air intake 52 in proper order in the frame 51, unidirectional fan 53 and be used for keeping apart the protection network 54 of outside foreign matter, when the exhaust gas volume is less in exhaust pipe 3, can only open partial cooling fan 5, and the condition that the cooling fan 5 that does not open probably exists and reveal the waste gas, consequently, set up unidirectional air intake 52, make the waste gas in the exhaust pipe 3 unable to pass through, only be limited to outside air entering exhaust pipe 3.
The unidirectional fan 53 is located between the unidirectional air inlet 52 and the protective screen 54, the blowing direction of the unidirectional fan 53 is towards the inside of the exhaust pipe 3, the unidirectional air inlet 52 comprises a rectangular frame 521 fixed on the inner wall of the outer frame 51, a plurality of strip-shaped fan blades 522 capable of opening towards the inside of the exhaust pipe 3 are arranged on the rectangular frame 521, two ends of each strip-shaped fan blade 522 are rotatably fixed on the inner wall of the outer frame 51 through round rods 523, when the cooling fan 5 works, the unidirectional fan 53 injects external cold air into the exhaust pipe 3, the direction inside the exhaust pipe 3 of the strip-shaped fan blades 522 is opened due to blowing of wind force, after the cooling fan 5 is closed, the strip-shaped fan blades 522 are sequentially overlapped on the rectangular frame 521, and closing of a channel in the outer frame 51 is achieved.
The cooling fan 5 on the horizontal direction exhaust pipe 3 diapire that is located the lower part sets up the position and corresponds the exhaust pipe 3 lower extreme at the vertical direction, when the exhaust gas is mingled with the dust and is carried perpendicularly in exhaust pipe 3, the dust probably can be because gravity adheres to on exhaust pipe 3 inner wall, the cooling fan 5 that is located the lower part this moment can blow the dust, the crisscross relative setting in cooling fan 5 position on the exhaust pipe 3 lateral wall of vertical direction can effectually blow the dust, prevent that the dust from being attached to at exhaust pipe 3 inner wall.
The below of exhaust pipe 3 is equipped with the support frame 6 that is used for supporting exhaust pipe 3, prevents that exhaust pipe 3 from dropping excessively.
The dry dust collector 4 is a bag dust collector, the dry dust collector 4 comprises a dust collecting box 41, a funnel-shaped dust collecting hopper 42 is arranged below the dust collecting box 41, an ash outlet 43 is arranged below the funnel-shaped dust collecting hopper 42, a support is arranged below the dust collecting box 41, the tail end of the exhaust pipe 3, which is far away from the exhaust port 2, stretches into the side wall of the funnel-shaped dust collecting hopper 42, an air outlet 44 for discharging filtered waste gas is formed in the top of the dry dust collector 4, the cooled waste gas enters the dry dust collector 4 through the side wall of the funnel-shaped dust collecting hopper 42, dust in the waste gas falls into the funnel-shaped dust collecting hopper 42 due to gravity, the waste gas is purified through a dust removing and purifying component arranged in the dust collecting box 41, and is discharged to the outside through the air outlet 44.
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 (8)
1. The utility model provides a shaft kiln exhaust treatment device, includes shaft kiln body (1), its characterized in that: the vertical kiln is characterized in that an exhaust port (2) is formed in the top of the vertical kiln body (1), an exhaust pipe (3) is connected to the right side of the exhaust port (2), the exhaust pipe (3) is in a three-section shape, the length of the exhaust pipe (3) in the horizontal direction is smaller than that of the exhaust pipe (3) in the vertical direction, the length of the exhaust pipe (3) in the vertical direction is matched with the height of the vertical kiln body (1), so that the height of the exhaust pipe (3) in the horizontal direction at the lower part is guaranteed to be above the ground, and one end, far away from the exhaust port (2), of the exhaust pipe (3) is connected with a dry dust remover (4) for removing dust from exhaust gas;
the section of the exhaust pipe (3) is square, a cooling fan (5) for cooling high-temperature exhaust gas in the pipe is arranged on the outer wall of the exhaust pipe (3), and the cooling fan (5) is positioned on the outer side of the bottom wall of the exhaust pipe (3) in the horizontal direction and the outer side of the side wall of the exhaust pipe (3) in the vertical direction.
2. A shaft kiln exhaust gas treatment device according to claim 1, wherein: the cooling fan (5) runs through in exhaust pipe (3) outer wall, and cooling fan (5) are including frame (51) of rectangle, realize fixed connection through the nut between frame (51) and exhaust pipe (3) outer wall, be equipped with one-way air intake (52) in proper order in frame (51), one-way fan (53) and be used for keeping apart protection network (54) of outside foreign matter.
3. A shaft kiln exhaust gas treatment apparatus according to claim 2, wherein: the unidirectional air inlet (52) comprises a rectangular frame (521) fixed on the inner wall of the outer frame (51), a plurality of strip-shaped fan blades (522) capable of opening towards the inside of the exhaust pipe (3) are arranged on the rectangular frame (521), and two ends of each strip-shaped fan blade (522) are rotatably fixed on the inner wall of the outer frame (51) through round rods (523).
4. A shaft kiln exhaust gas treatment apparatus according to claim 2, wherein: the unidirectional fan (53) is positioned between the unidirectional air inlet (52) and the protective net (54), and the blowing direction of the unidirectional fan (53) faces the inside of the exhaust pipe (3).
5. A shaft kiln exhaust gas treatment device according to claim 1, wherein: the cooling fan (5) on the bottom wall of the lower horizontal exhaust pipe (3) is arranged at a position corresponding to the lower end of the vertical exhaust pipe (3).
6. A shaft kiln exhaust gas treatment device according to claim 1, wherein: the cooling fans (5) on the side wall of the exhaust pipe (3) in the vertical direction are arranged in a staggered and opposite way.
7. A shaft kiln exhaust gas treatment device according to claim 1, wherein: a supporting frame (6) for supporting the exhaust pipe (3) is arranged below the exhaust pipe (3).
8. A shaft kiln exhaust gas treatment device according to claim 1, wherein: the dry dust collector (4) is a bag type dust collector, the dry dust collector (4) comprises a dust collection box body (41), a funnel-shaped dust collection hopper (42) is arranged below the dust collection box body (41), an ash outlet (43) is arranged below the funnel-shaped dust collection hopper (42), and a bracket is arranged below the dust collection box body (41);
the tail end of the exhaust pipe (3) far away from the exhaust port (2) stretches into the side wall of the funnel-shaped ash collecting hopper (42), and an air outlet (44) for discharging filtered exhaust gas is formed in the top of the dry dust collector (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322291115.8U CN220750842U (en) | 2023-08-25 | 2023-08-25 | Shaft kiln exhaust treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322291115.8U CN220750842U (en) | 2023-08-25 | 2023-08-25 | Shaft kiln exhaust treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220750842U true CN220750842U (en) | 2024-04-09 |
Family
ID=90569480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322291115.8U Active CN220750842U (en) | 2023-08-25 | 2023-08-25 | Shaft kiln exhaust treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220750842U (en) |
-
2023
- 2023-08-25 CN CN202322291115.8U patent/CN220750842U/en active Active
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| GR01 | Patent grant | ||
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