CN203355595U - Self-adaptive aqua ammonia spraying device - Google Patents
Self-adaptive aqua ammonia spraying device Download PDFInfo
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- CN203355595U CN203355595U CN 201320333021 CN201320333021U CN203355595U CN 203355595 U CN203355595 U CN 203355595U CN 201320333021 CN201320333021 CN 201320333021 CN 201320333021 U CN201320333021 U CN 201320333021U CN 203355595 U CN203355595 U CN 203355595U
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- aqua ammonia
- self
- pipeline
- measuring pump
- kiln
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Abstract
The utility model discloses a self-adaptive aqua ammonia spraying device. The device comprises an aqua ammonia storage tank, wherein the aqua ammonia storage tank is connected with a spray gun at a kiln mouth through a pipeline, and a metering pump is arranged on the pipeline; meanwhile, a smoke composition detector is arranged in a kiln, and the metering pump and the smoke composition detector are controlled by a PLC control cabinet. The device can automatically adjust the spraying amount of aqua ammonia, can not only guarantee a better denitration effect but also save the aqua ammonia spraying amount, and reduces the cost; a complete arrangement method is scientific and simple, and facilitates the application.
Description
Technical field
The utility model belongs to field of Environment Protection, is specifically related to a kind of self-adapting type ammonia injection apparatus.
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 self-adapting type ammonia injection apparatus is provided.
Technical scheme: in order to achieve the above object, the utility model specifically completes like this: a kind of self-adapting type ammonia injection apparatus, comprise tank used for storing ammonia, and tank used for storing ammonia is connected with the spray gun of kiln mouth by pipeline, and pipeline is provided with measuring pump; Simultaneously, be provided with the smoke components surveymeter in kiln, described measuring pump and smoke components surveymeter are controlled by the PLC switch board.
Wherein, the parameter that described PLC switch board provides according to default code and smoke components surveymeter, the quantity of ammoniacal liquor pumping on the adjustment measuring pump.
Wherein, to be divided into be 5 grades to the adjustable ammoniacal liquor conveying capacity of measuring pump.
Beneficial effect: the present invention compares with conventional art, has following advantage:
1, can automatically regulate the emitted dose of ammoniacal liquor, can guarantee denitration effect preferably, can save ammonia water spray quantity, Cost reduction again;
2, realized the Automatic Control of ammonia water spray amount, on duty without personnel;
3, a whole set of method for arranging science is simple, easy to implement.
The accompanying drawing explanation
Accompanying drawing is structural representation of the present utility model.
The specific embodiment
As shown in drawings, a kind of self-adapting type ammonia injection apparatus, comprise tank used for storing ammonia 1, and tank used for storing ammonia 1 is connected by the spray gun 3 of 2 mouthfuls of pipeline and kilns, and pipeline is provided with measuring pump 4; Simultaneously, be provided with smoke components surveymeter 5 in kiln 2, described measuring pump 4 and smoke components surveymeter 5 are controlled by PLC switch board 6; The parameter that described PLC switch board 6 provides according to default code and smoke components surveymeter 4, the quantity of ammoniacal liquor pumping on adjustment measuring pump 2.
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 self-adapting type ammonia injection apparatus, is characterized in that, comprises tank used for storing ammonia (1), and tank used for storing ammonia (1) is connected with the spray gun (3) of kiln (2) mouth by pipeline, and pipeline is provided with measuring pump (4); Simultaneously, be provided with smoke components surveymeter (5) in kiln (2), described measuring pump (4) and smoke components surveymeter (5) are controlled by PLC switch board (6).
2. self-adapting type ammonia injection apparatus according to claim 1, is characterized in that, the parameter that described PLC switch board (6) provides according to default code and smoke components surveymeter (4) is adjusted the above quantity of ammoniacal liquor pumping of measuring pump (2).
3. self-adapting type ammonia injection apparatus according to claim 1, is characterized in that, it is 5 grades that the ammoniacal liquor conveying capacity that measuring pump (2) is regulated is divided into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320333021 CN203355595U (en) | 2013-06-08 | 2013-06-08 | Self-adaptive aqua ammonia spraying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320333021 CN203355595U (en) | 2013-06-08 | 2013-06-08 | Self-adaptive aqua ammonia spraying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203355595U true CN203355595U (en) | 2013-12-25 |
Family
ID=49803420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320333021 Expired - Fee Related CN203355595U (en) | 2013-06-08 | 2013-06-08 | Self-adaptive aqua ammonia spraying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203355595U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107854980A (en) * | 2017-12-13 | 2018-03-30 | 云南驰宏锌锗股份有限公司 | A kind of system for removing lead-zinc smelting flue gas nitrogen oxide |
-
2013
- 2013-06-08 CN CN 201320333021 patent/CN203355595U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107854980A (en) * | 2017-12-13 | 2018-03-30 | 云南驰宏锌锗股份有限公司 | A kind of system for removing lead-zinc smelting flue gas nitrogen oxide |
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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 |