CN203355614U - Spray gun for cement kiln denitration - Google Patents
Spray gun for cement kiln denitration Download PDFInfo
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- CN203355614U CN203355614U CN 201320332589 CN201320332589U CN203355614U CN 203355614 U CN203355614 U CN 203355614U CN 201320332589 CN201320332589 CN 201320332589 CN 201320332589 U CN201320332589 U CN 201320332589U CN 203355614 U CN203355614 U CN 203355614U
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- spray gun
- preheater
- cement kiln
- spray
- spray guns
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Abstract
The utility model discloses a spray gun for cement kiln denitration, which comprises a cylindrical preheater, wherein three to four spray gun units are respectively arranged on the circumference of the preheater. The spray gun reduces the spray gun number, reduces the cost, is suitable for conventional cement kilns with various output ranges from 1000 t/d to 5000 t/d, and is wide in adaptability; the whole set of the spray gun is scientific and simple in the arrangement method, and easy to implement.
Description
Technical field
The utility model belongs to field of Environment Protection, is specifically related to a kind of cement kiln denitration spray gun.
Background technology
Cement kiln, when work, can produce a large amount of oxynitrides NO
x, NO
xcan bring very large harm to ball ecological environment and human health: it is one of main source of acid rain still not, simultaneously or carcinogen; NO
xunder the irradiation of sunburst in summer, very easily by complicated photochemical reaction, form photochemical fog with hydrocarbon compound, generate than the secondary pollution of large hundred times of original toxicity; NO
xalso can damage ozone layer.
Therefore, when cement kiln is worked, must collect the flue gas produced and be processed, preventing that it from entering in air affects the human lives.At present, when processing this class flue gas, common method is SCR (SCR) technology, and this class methods advantage is that temperature only need to be controlled at 350～400 ℃, and power consumption is few, and cost is low, and removal efficiency reaches 80% left and right.But this method is not suitable for using with cement kiln, because cement kiln contains more soot dust granule, in processing procedure, in flue dust, particle can blocking catalyst.Simultaneously, the alkaline matter in flue gas, can make catalyst poisoning as CaO; Therefore the denitration of cement kiln is more suitable for adopting SNCR (SNCR) technology.
The SNCR technology is generally used NH
3for reducing agent, optimal reaction temperature is 850 ℃～1100 ℃.Due to cement slurry in warm, need by a plurality of preheater inner barrels, 4 grades of cylinder C4 of preheater wherein, 5 grades of cylinder C5 of preheater and smoke-box internal temperature are between 850 ℃～1100 ℃, therefore spray gun is arranged in this zone, can reach best denitration effect.
Summary of the invention
Goal of the invention: the purpose of this utility model is for the deficiencies in the prior art, and a kind of cement kiln denitration spray gun is provided.
Technical scheme: in order to achieve the above object, the utility model specifically completes like this: a kind of cement kiln denitration spray gun, comprise the cylindricality preheater, and be respectively equipped with 3～4 spray guns on the preheater circumference.
Wherein, when the preheater circumference is provided with 4 spray guns, a spray gun, No. two spray gun be in lines are in line parallel with No. three spray guns, No. four spray guns, and the angle that spray gun and the preheater center of circle, No. two spray guns form is 60 °, and No. three spray gun is 60 ° with the angle of the preheater center of circle, No. four spray gun compositions.
Wherein, when the preheater circumference is provided with 3 spray guns, the angle that in three spray guns, any two spray guns and the preheater center of circle form is 120 °.
Beneficial effect: the present invention compares with conventional art, has following advantage:
1, spray gun quantity down progressively increases from 4 grades of preheater C4 of cement kiln, to adapt to the increase of preheater internal temperature and pressure, reaches best jeting effect;
2, save spray gun quantity, cost-saving;
3, be applicable to the existing cement kiln from various output such as 1000t/d-5000t/d, wide adaptability;
4, a whole set of method for arranging science is simple, easy to implement.
The accompanying drawing explanation
The structural representation that Fig. 1 is the utility model 4 spray guns;
The structural representation that Fig. 2 is the utility model 3 spray guns.
The specific embodiment
As shown in Figure 1, a kind of cement kiln denitration spray gun, preheater 1 circumference is provided with 4 spray guns 21,22,23,24, spray gun 21, No. two spray gun 22 be in lines and No. three spray guns 23, No. four spray guns 24 are in line parallel, and No. one spray gun 21 is 60 ° with the angle of preheater 1 center of circle, No. two spray gun 22 compositions, No. three spray gun 23 is 60 ° with the angle of preheater 1 center of circle, No. four spray gun 24 compositions.
1, as shown in Figure 2, a kind of cement kiln denitration spray gun, preheater 1 circumference is provided with 3 spray guns 31,32,33, and the angle that in three spray guns 31,32,33, any two spray guns and preheater 1 center of circle form is 120 °.
Certainly, the foregoing is only specific embodiment of the utility model, be not to limit scope of the present utility model, all equivalences of doing according to the described structure of the utility model the scope of the claims, feature and principle change or modify, and all should be included in the utility model claim.
Claims (3)
1. a cement kiln denitration spray gun, is characterized in that, comprises cylindricality preheater (1), on preheater (1) circumference, is respectively equipped with 3～4 spray guns (21,22,23,24; 31,32,33).
2. cement kiln denitration spray gun according to claim 1, it is characterized in that, preheater (1) circumference is provided with 4 spray guns (21,22,23,24), a spray gun (21), No. two spray guns (22) be in line are in line parallel with No. three spray guns (23), No. four spray guns (24), and a spray gun (21) is 60 ° with the angle that preheater (1) center of circle, No. two spray guns (22) form, No. three spray guns (23) are 60 ° with the angle that preheater (1) center of circle, No. four spray guns (24) form.
3. cement kiln denitration spray gun according to claim 1, it is characterized in that, preheater (1) circumference is provided with 3 spray guns (31,32,33), and the angle that in three spray guns (31,32,33), any two spray guns and preheater (1) center of circle form is 120 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320332589 CN203355614U (en) | 2013-06-08 | 2013-06-08 | Spray gun for cement kiln denitration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320332589 CN203355614U (en) | 2013-06-08 | 2013-06-08 | Spray gun for cement kiln denitration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203355614U true CN203355614U (en) | 2013-12-25 |
Family
ID=49803438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320332589 Expired - Fee Related CN203355614U (en) | 2013-06-08 | 2013-06-08 | Spray gun for cement kiln denitration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203355614U (en) |
-
2013
- 2013-06-08 CN CN 201320332589 patent/CN203355614U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20140608 |