CN211111743U - Lime calcining kiln with tail gas purification system - Google Patents
Lime calcining kiln with tail gas purification system Download PDFInfo
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- CN211111743U CN211111743U CN201922010479.8U CN201922010479U CN211111743U CN 211111743 U CN211111743 U CN 211111743U CN 201922010479 U CN201922010479 U CN 201922010479U CN 211111743 U CN211111743 U CN 211111743U
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Abstract
The utility model discloses a lime calcining kiln with a tail gas purification system, belonging to the technical field of quicklime processing, comprising a calcining kiln body, a heat exchange box, a cooling tower, a cyclone separator and an adsorption tower, wherein the top of the calcining kiln body is connected with a conical filter tower through an exhaust pipe; a lower filter plate, an upper filter plate and a filter screen are arranged in the conical filter tower; the conical filter tower is connected with the heat exchange box through an exhaust pipeline; a heat exchange tube is arranged in the heat exchange box, the air inlet end of the heat exchange box is connected with an air blower through a pipeline, and the air outlet end of the heat exchange box is connected with a hot air pipeline; the tail end of the heat exchange tube is connected with the cyclone separator through a pipeline; the cyclone separator is connected with the cooling tower through a pipeline; the cooling tower is connected with the adsorption tower through a pipeline; an active carbon adsorption layer is arranged in the adsorption tower; the adsorption tower is connected with an exhaust pipeline. The utility model discloses be convenient for detach the impurity of calcining kiln to can utilize the heat energy of tail gas, reduce the emission of tail gas discarded object.
Description
Technical Field
The utility model belongs to the technical field of quick lime processing technique and specifically relates to a lime calcining kiln with tail gas clean-up system is related to.
Background
The most main equipment for calcining lime by limestone is a calcining kiln, and the tail gas of the lime calcining kiln mainly contains CO2And N2And with a small amount of O2、CO、SO2And the like, and of course, also contains dust; the dust mainly contains CaO, MgO and Al2O3And CaCO3Etc.; if the impurities are not sufficiently purified, the impurities are directly discharged into the atmosphere, so that the dust content of the atmosphere is increased, and the environment is seriously influenced. Because the tail gas temperature that comes out in the lime calcining kiln is higher, if direct purification at first can cause serious corrosion to equipment, secondly can waste a large amount of heat energy, current lime kiln gas purifier adopts the mode of spraying dust removal or washing basically, has reduced gas emission's temperature, but has also wasted more heat, if can do benefit to the heat of tail gas, is undoubtedly an energy-concerving and environment-protective production mode.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an impurity convenient to detach calcining kiln to can utilize the heat energy of tail gas, reduce the lime calcining kiln that has tail gas clean system of the emission of tail gas discarded object.
In order to solve the technical problem, the utility model discloses a technical scheme does: a lime calcining kiln with a tail gas purification system comprises a calcining kiln body, a heat exchange box, a cooling tower, a cyclone separator and an adsorption tower, wherein the top of the calcining kiln body is connected with a conical filtering tower through an exhaust pipe; a lower filter plate, an upper filter plate and a filter screen are arranged in the conical filter tower; the conical filter tower is connected with the heat exchange box through an exhaust pipeline; a heat exchange tube is arranged in the heat exchange box, the air inlet end of the heat exchange box is connected with an air blower through a pipeline, and the air outlet end of the heat exchange box is connected with a hot air pipeline; the tail end of the heat exchange tube is connected with the cyclone separator through a pipeline; the cyclone separator is connected with the cooling tower through a pipeline; the cooling tower is connected with the adsorption tower through a pipeline; an activated carbon adsorption layer is arranged in the adsorption tower; the adsorption tower is connected with an exhaust pipeline.
Preferably, the lower filter plate and the upper filter plate are both provided with through holes which are inclined upwards, wherein the through holes of the lower filter plate are opposite to the inclined upwards direction of the through holes of the upper filter plate.
Preferably, the filter screen is V-shaped or arc-shaped.
Preferably, the heat exchange tubes are folded and coiled inside the heat exchange box.
Preferably, the top and the bottom in the heat exchange box are provided with a plurality of vertical partition boards in a staggered manner, wherein in two adjacent partition boards, a ventilation gap is formed between the top end of the previous partition board and the top wall of the heat exchange box, and a ventilation gap is formed between the lower end of the next partition board and the bottom wall of the heat exchange box.
Preferably, the cooling tower comprises an inner cavity and an outer shell and a hollow interlayer arranged between the inner cavity and the outer shell; a plurality of spray heads are arranged in the hollow interlayer.
Compared with the prior art, the beneficial effects of the utility model are that:
1. because the top of the calcining kiln body of the utility model is connected with the conical filtering tower through the exhaust pipe; a lower filter plate, an upper filter plate and a filter screen are arranged in the conical filter tower, dust of the tail gas can be preliminarily filtered in the conical filter tower, the content of the dust in the tail gas is reduced, and the load of subsequent equipment is reduced;
2. the tail gas is input into the heat exchange box to exchange heat with air, and finally the air is heated, and the heated air can be used for drying raw materials or preheating limestone and the like, so that the heat energy of the tail gas is reused;
3. the tail gas after the heat transfer is through cyclone's processing once more, can go out impurity such as more dust, and the cooling of passing through the cooling tower again at last avoids high-temperature gas's emission, and tail gas discharges after the adsorption filtration of filter tower, and tail gas reduces the emission of impurity in the tail gas after adsorption filtration, has effectively protected the environment.
Drawings
Fig. 1 is a schematic structural view of a lime calcining kiln with a tail gas purification system of the utility model;
fig. 2 is a schematic structural diagram of a heat exchange box 2 with a tail gas purification system according to the present invention;
fig. 3 is a schematic structural diagram of the cooling tower 3 with the tail gas purification system of the present invention.
Detailed Description
The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 and fig. 2, the lime calcining kiln with a tail gas purification system of the present invention comprises a calcining kiln body 1, a heat exchange box 2, a cooling tower 3, a cyclone 4 and an adsorption tower 5, wherein the cyclone 4 is selected from the existing equipment, the structure and function of the existing equipment are not repeated, and the top of the calcining kiln body 1 is connected with a conical filtering tower 11 through an exhaust pipe; a lower filter plate 12, an upper filter plate 13 and a filter screen 14 are arranged in the conical filter tower 11; the conical filter tower 11 is connected with the heat exchange box 2 through an exhaust pipeline 6; a heat exchange tube 21 is arranged in the heat exchange box 2, the air inlet end of the heat exchange box 2 is connected with an air blower 22 through a pipeline, and the air outlet end of the heat exchange box is connected with a hot air pipeline 23; in order to prolong the contact time between the air and the heat exchange tubes 21 and be beneficial to the air to obtain more heat, the heat exchange tubes 21 are folded and coiled in the heat exchange box 2, a plurality of vertical partition plates 24 are arranged at the top and the bottom in the heat exchange box 2 in a staggered manner, wherein in two adjacent partition plates 24, a ventilation gap is formed between the top end of the previous partition plate 24 and the top wall of the heat exchange box 2, and a ventilation gap is formed between the lower end of the next partition plate 24 and the bottom wall of the heat exchange box 2; when air enters the heat exchange box 2, the air flows along the folding direction of the heat exchange tubes 21 in sequence, so that the path of the air is prolonged, and the air exchanges heat with the heat exchange tubes 21 more; the tail end of the heat exchange tube 21 is connected with a cyclone separator 4 through a pipeline, and the cyclone separator 4 is used for separating dust; the cyclone separator 4 is connected with the cooling tower 3 through a pipeline; the cooling tower 3 is connected with the adsorption tower 5 through a pipeline; an activated carbon adsorption layer 51 is arranged in the adsorption tower 5; the adsorption tower 5 is connected to an exhaust gas line 52.
In order to facilitate better filtering of dust, both the lower filter plate 12 and the upper filter plate 13 are provided with obliquely upward through holes, wherein the through holes of the lower filter plate 12 are opposite to the obliquely upward direction of the through holes of the upper filter plate 13. When dust in the tail gas, particularly dust with larger particles, passes through the lower filter plate 12 and the upper filter plate 13, the dust is gradually filtered and intercepted, the intercepted large-particle dust is deposited at the bottom of the conical filter tower 11 and is periodically removed, and certainly, in order to increase the contact area between the filter screen and the dust, the contact area between the filter screen 14 and the tail gas is increased, and the filtering effect is improved; the filter screen 14 is V-shaped or arc-shaped.
As shown in fig. 3, the cooling tower 3 of the present invention includes an inner cavity 31 and an outer shell 32, and a hollow interlayer 33 disposed between the inner cavity 31 and the outer shell 32; a plurality of spray heads 34 are arranged in the hollow interlayer 33, and the inner cavity 31 is cooled by spraying water through the spray heads 34, so that the tail gas is rapidly cooled, and the emission of hot gas is finally reduced.
The utility model discloses a concrete work is as follows: calcining limestone, inputting generated tail gas into a conical filter tower 11 through a pipeline, filtering and intercepting by a lower filter plate 12, an upper filter plate 13 and a filter screen 14 in the conical filter tower 11 to intercept larger dust, sequentially enabling the tail gas to enter a heat exchange box 2 through the pipeline to exchange heat with air to heat the air, and enabling the heated air to be used for other purposes, such as drying calcium carbonate or other articles; the temperature of the tail gas after heat exchange is reduced, the dust is separated through the separation of the cyclone separator, and finally the tail gas is cooled and filtered and then discharged into the air, so that the discharge of the dust in the tail gas is reduced, and the heat energy is fully utilized.
Finally, it should be noted that the contents not described in detail in the specification belong to the prior art known to those skilled in the art, and those skilled in the art can implement the contents without creative efforts, so that the details are not described herein.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.
Claims (6)
1. A lime calcining kiln with a tail gas purification system comprises a calcining kiln body (1), a heat exchange box (2), a cooling tower (3), a cyclone separator (4) and an adsorption tower (5), and is characterized in that the top of the calcining kiln body (1) is connected with a conical filtering tower (11) through an exhaust pipe; a lower filter plate (12), an upper filter plate (13) and a filter screen (14) are arranged in the conical filter tower (11); the conical filter tower (11) is connected with the heat exchange box (2) through an exhaust pipeline (6); a heat exchange pipe (21) is arranged in the heat exchange box (2), the air inlet end of the heat exchange box (2) is connected with an air blower (22) through a pipeline, and the air outlet end of the heat exchange box is connected with a hot air pipeline (23); the tail end of the heat exchange pipe (21) is connected with the cyclone separator (4) through a pipeline; the cyclone separator (4) is connected with the cooling tower (3) through a pipeline; the cooling tower (3) is connected with the adsorption tower (5) through a pipeline; an activated carbon adsorption layer (51) is arranged in the adsorption tower (5); the adsorption tower (5) is connected with an exhaust pipeline (52).
2. The lime burning kiln with an exhaust gas purifying system according to claim 1, wherein the lower filter plate (12) and the upper filter plate (13) are provided with through holes obliquely upward, wherein the through holes of the lower filter plate (12) are opposite to the through holes of the upper filter plate (13) in the obliquely upward direction.
3. The lime burning kiln with an exhaust gas purification system according to claim 1, characterized in that the filter screen (14) is V-shaped or curved.
4. The lime burning kiln with tail gas cleaning system according to claim 1, characterized in that the heat exchange tubes (21) are folded and coiled inside the heat exchange box (2).
5. The lime burning kiln with an exhaust gas purification system according to claim 4, wherein the heat exchange box (2) is provided with a plurality of vertical partition plates (24) at the top and bottom in a staggered manner, wherein in two adjacent partition plates (24), a ventilation gap is formed between the top end of the previous partition plate (24) and the top wall of the heat exchange box (2), and a ventilation gap is formed between the lower end of the next partition plate (24) and the bottom wall of the heat exchange box (2).
6. The lime burning kiln with an exhaust gas purification system according to claim 1, characterized in that the cooling tower (3) comprises an inner chamber (31) and an outer shell (32) and a hollow interlayer (33) arranged between the inner chamber (31) and the outer shell (32); a plurality of spray heads (34) are arranged in the hollow interlayer (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922010479.8U CN211111743U (en) | 2019-11-20 | 2019-11-20 | Lime calcining kiln with tail gas purification system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922010479.8U CN211111743U (en) | 2019-11-20 | 2019-11-20 | Lime calcining kiln with tail gas purification system |
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| CN211111743U true CN211111743U (en) | 2020-07-28 |
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| CN201922010479.8U Active CN211111743U (en) | 2019-11-20 | 2019-11-20 | Lime calcining kiln with tail gas purification system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112023540A (en) * | 2020-09-01 | 2020-12-04 | 河南省湖波灵威水泥集团有限责任公司 | Waste gas purification equipment in cement production |
| CN113975964A (en) * | 2021-11-05 | 2022-01-28 | 内蒙古君正化工有限责任公司 | Tail gas circulating equipment of sleeve lime kiln |
| CN117049800A (en) * | 2023-09-04 | 2023-11-14 | 浙江钙科科技股份有限公司 | High-stability calcium carbonate suspension calcination system and method |
-
2019
- 2019-11-20 CN CN201922010479.8U patent/CN211111743U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112023540A (en) * | 2020-09-01 | 2020-12-04 | 河南省湖波灵威水泥集团有限责任公司 | Waste gas purification equipment in cement production |
| CN113975964A (en) * | 2021-11-05 | 2022-01-28 | 内蒙古君正化工有限责任公司 | Tail gas circulating equipment of sleeve lime kiln |
| CN113975964B (en) * | 2021-11-05 | 2023-12-22 | 内蒙古君正化工有限责任公司 | Tail gas circulation equipment of sleeve lime kiln |
| CN117049800A (en) * | 2023-09-04 | 2023-11-14 | 浙江钙科科技股份有限公司 | High-stability calcium carbonate suspension calcination system and method |
| CN117049800B (en) * | 2023-09-04 | 2024-05-14 | 浙江钙科科技股份有限公司 | High-stability calcium carbonate suspension calcination system and method |
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