CN217979866U - Lime kiln tail gas waste heat utilization system - Google Patents
Lime kiln tail gas waste heat utilization system Download PDFInfo
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- CN217979866U CN217979866U CN202221769994.XU CN202221769994U CN217979866U CN 217979866 U CN217979866 U CN 217979866U CN 202221769994 U CN202221769994 U CN 202221769994U CN 217979866 U CN217979866 U CN 217979866U
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- carbon material
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- lime kiln
- belt conveyor
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Abstract
The utility model discloses a lime kiln tail gas waste heat utilization system, including the lime kiln, the exhanst gas outlet of lime kiln is connected with the air inlet of first sack cleaner, the gas vent of first sack cleaner and the intake-tube connection of carbon material preheating cabinet, the carbon material preheating cabinet includes the box, the bottom of box is connected with a plurality of intake pipes, the top of box is connected with a plurality of blast pipes, the opening has been seted up at the both sides central authorities of box, carbon material band conveyer has been worn to have in the opening of box, the direction of delivery along carbon material band conveyer is fixed with the aviation baffle on the box inner wall of carbon material band conveyer top, lateral wall to carbon material band conveyer downward sloping by the box. The flue gas discharged from the lime kiln is dedusted by the first bag-type dust remover and then is conveyed to the carbon material preheating box, the carbon material belt conveyor carries the carbon material to enter the carbon material preheating box, the carbon material is heated and dried by using the waste heat of the flue gas of the lime kiln, the time for drying the carbon material by the rotary kiln is shortened, and the energy consumed by the rotary kiln for providing heat is further reduced.
Description
The technical field is as follows:
the utility model relates to a carbide production field, concretely relates to lime kiln tail gas waste heat utilization system.
Background art:
the main component of calcium carbide is calcium carbide (CaC) 2 ) Mainly for generating acetylene gas; the main raw materials of production carbide is lime and carbon material, when processing lime, need send into the lime kiln with the lime stone and calcine, and still have a large amount of heats in the lime kiln exhaust combustion exhaust, direct emission then still need be cooled down with the spray column, still can cause the heat waste, and carbon material then need send into the drying kiln and dry before adding the carbide stove, need a large amount of heat heating stoving air, consume a large amount of energy.
The utility model has the following contents:
an object of the utility model is to provide a lime kiln tail gas waste heat utilization system.
The utility model discloses implement by following technical scheme:
a lime kiln tail gas waste heat utilization system comprises a lime kiln, wherein a smoke outlet of the lime kiln is connected with an air inlet of a first bag-type dust collector, an air outlet of the first bag-type dust collector is connected with an air inlet pipe of a carbon material preheating box, and an exhaust pipe of the carbon material preheating box is connected with an air inlet of a second bag-type dust collector;
the carbon material preheating box comprises a box body, the bottom of the box body is connected with a plurality of air inlet pipes, the top of the box body is connected with a plurality of exhaust pipes, openings are formed in the centers of the two sides of the box body, a carbon material belt conveyor penetrates through the openings of the box body, an air deflector is fixed on the inner wall of the box body above the carbon material belt conveyor along the conveying direction of the carbon material belt conveyor, and is obliquely arranged and downwards inclined from the side wall of the box body to the carbon material belt conveyor;
and the discharge hole of the carbon belt conveyor is connected with the feed inlet of the rotary kiln.
Preferably, a dust curtain is fixed on the box body outside the opening.
Preferably, a wind shield is fixed in the box body, two ends of the wind shield are fixed on the inner side of the box body, and the wind shield is located below the carbon belt conveyor.
Preferably, the end of the air inlet pipe in the box body is higher than the bottom of the box body.
The utility model has the advantages that: the flue gas discharged from the lime kiln is dedusted by the first bag-type dust remover and then is conveyed to the carbon material preheating box, the carbon material is carried by the carbon material belt conveyor to enter the carbon material preheating box, the carbon material is heated and dried by using the waste heat of the flue gas of the lime kiln, the time for drying the carbon material by the rotary kiln is shortened, and the energy consumed by the rotary kiln for providing heat is further shortened.
Description of the drawings:
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic structural view of the preheating box for carbon material of the present invention;
fig. 3 is a left side view of the carbon preheating box of the present invention.
In the figure: lime kiln 1, first sack cleaner 2, carbon material preheating cabinet 3, box 3.1, intake pipe 3.2, blast pipe 3.3, opening 3.4, aviation baffle 3.5, second sack cleaner 4, carbon material band conveyer 5, rotary kiln 6, dust-blocking curtain 7, deep bead 8.
The specific implementation mode is as follows:
as shown in fig. 1 to 3, a lime kiln tail gas waste heat utilization system comprises a lime kiln 1, wherein a flue gas outlet of the lime kiln 1 is connected with a gas inlet of a first bag-type dust collector 2, a gas outlet of the first bag-type dust collector 2 is connected with a gas inlet pipe 3.2 of a carbon material preheating tank 3, and a gas outlet pipe 3.3 of the carbon material preheating tank 3 is connected with a gas inlet of a second bag-type dust collector 4; the carbon material preheating box 3 comprises a box body 3.1, the bottom of the box body 3.1 is connected with a plurality of air inlet pipes 3.2, the top of the box body 3.1 is connected with a plurality of exhaust pipes 3.3, the centers of two sides of the box body 3.1 are provided with openings 3.4, a carbon material belt conveyor 5 is arranged in the openings 3.4 of the box body 3.1 in a penetrating manner, an air deflector 3.5 is fixed on the inner wall of the box body 3.1 above the carbon material belt conveyor 5 along the conveying direction of the carbon material belt conveyor 5, the air deflector 3.5 is arranged in an inclined manner and inclines downwards from the side wall of the box body 3.1 to the carbon material belt conveyor 5; the discharge outlet of the carbon belt conveyor 5 is connected with the feed inlet of the rotary kiln 6;
the method comprises the following steps that flue gas discharged from a lime kiln 1 is firstly sent to a first bag-type dust remover 2 for primary dust removal, dust generated in combustion is separated, high-temperature flue gas purified by the first bag-type dust remover 2 is sent to a carbon material preheating box 3, a carbon material belt conveyor 5 carries carbon materials to enter the carbon material preheating box 3, the flue gas pre-dries the carbon materials in the carbon material preheating box 3, then the high-temperature flue gas is discharged into a second bag-type dust remover 4 for secondary dust removal, carbon material powder carried in the flue gas is separated, the pre-dried carbon materials are sent into a rotary kiln 6 for drying, the carbon materials are heated and dried by using waste heat of the flue gas of the lime kiln 1, the time for drying the carbon materials by the rotary kiln 6 is shortened, and further the amount of energy supplied by heat consumed by the rotary kiln 6 is reduced;
flue gas enters the box body 3.1 from the gas inlet pipe 3.2 and is conveyed upwards from a gap between the carbon material belt conveyor 5 and the side wall of the box body 3.1, and the flue gas is guided to the position above the carbon material belt conveyor 5 by the wind shield 8 and is blown to carbon materials conveyed on the carbon material belt conveyor 5;
a dust-blocking curtain 7 is fixed on the box body 3.1 outside the opening 3.4, and the dust-blocking curtain 7 can block partial smoke from being discharged from the opening 3.4, so that unorganized emission is avoided;
the flue gas is discharged from the lime kiln 1 and then is cooled by the heat exchanger, so that the belt of the carbon belt conveyor is prevented from being burnt due to overhigh temperature.
There is the deep bead 8 at box 3.1 internal fixation, and the inboard at box 3.1 is fixed at the both ends of deep bead 8, and the below that is located carbon material band conveyer 5 of deep bead 8, deep bead 8 can block the belt that the flue gas directly blows carbon material band conveyer 5, prevents that the belt from damaging under long-time high temperature.
The tip that intake pipe 3.2 is located box 3.1 is higher than the bottom of box 3.1, and the part carbon material powder in box 3.1 can fall to box 3.1 bottom, behind intake pipe 3.2 box 3.1, can not directly blow near intake pipe 3.2 carbon material powder at the flue gas, plays the collection effect, and regular cleaning can.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A lime kiln tail gas waste heat utilization system is characterized by comprising a lime kiln, wherein a smoke outlet of the lime kiln is connected with an air inlet of a first bag-type dust remover, an air outlet of the first bag-type dust remover is connected with an air inlet pipe of a carbon material preheating box, and an exhaust pipe of the carbon material preheating box is connected with an air inlet of a second bag-type dust remover;
the carbon material preheating box comprises a box body, the bottom of the box body is connected with a plurality of air inlet pipes, the top of the box body is connected with a plurality of exhaust pipes, openings are formed in the centers of the two sides of the box body, a carbon material belt conveyor penetrates through the openings of the box body, an air deflector is fixed on the inner wall of the box body above the carbon material belt conveyor along the conveying direction of the carbon material belt conveyor, and is obliquely arranged and downwards inclined from the side wall of the box body to the carbon material belt conveyor;
and the discharge hole of the carbon belt conveyor is connected with the feed inlet of the rotary kiln.
2. The system for utilizing the waste heat of the tail gas of the lime kiln as claimed in claim 1, wherein a dust curtain is fixed on the box body outside the opening.
3. The lime kiln tail gas waste heat utilization system according to claim 1, wherein a wind shield is fixed in the box body, two ends of the wind shield are fixed on the inner side of the box body, and the wind shield is located below the carbon belt conveyor.
4. The system of claim 1, wherein the end of the air inlet pipe in the box is higher than the bottom of the box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221769994.XU CN217979866U (en) | 2022-07-08 | 2022-07-08 | Lime kiln tail gas waste heat utilization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221769994.XU CN217979866U (en) | 2022-07-08 | 2022-07-08 | Lime kiln tail gas waste heat utilization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217979866U true CN217979866U (en) | 2022-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221769994.XU Active CN217979866U (en) | 2022-07-08 | 2022-07-08 | Lime kiln tail gas waste heat utilization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217979866U (en) |
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2022
- 2022-07-08 CN CN202221769994.XU patent/CN217979866U/en active Active
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