CN206082115U - Multistage chelate absorbing device of high concentration nitrogen oxide - Google Patents
Multistage chelate absorbing device of high concentration nitrogen oxide Download PDFInfo
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- CN206082115U CN206082115U CN201620937741.7U CN201620937741U CN206082115U CN 206082115 U CN206082115 U CN 206082115U CN 201620937741 U CN201620937741 U CN 201620937741U CN 206082115 U CN206082115 U CN 206082115U
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- Prior art keywords
- absorption tower
- high concentration
- nitrogen oxide
- multistage
- spray
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Abstract
The utility model relates to an industry tail gas treatment technology discloses a multistage chelate absorbing device of high concentration nitrogen oxide very much. This multistage chelate absorbing device of high concentration nitrogen oxide sets up the absorption tower that the flue gas entered the mouth, its characterized in that including the lower extreme: absorption tower bottom splendid attire sprays liquid, sprays liquid and communicates the exchange system that sprays who is located the absorption tower upper end through the pump, installs dynamic liquid film mass transfer ware in the absorption tower, and the lower extreme flue gas entry of spray column is connected to the exhanst gas outlet on absorption tower top, and the spray column is the three of series connection each other. The utility model discloses simple structure, reasonable in design can fully absorb high concentration nitrogen oxide, realizes that waste recovery utilizes, and tail gas and tail washings can reach national emission standard, and the environmental protection is with low costs, and economic benefits and social are obvious.
Description
（One）Technical field
The utility model is related to industrial tail gas treatment technology, and multistage chelating of more particularly to a kind of high concentration nitrogen oxide absorbs
Device.
（Two）Background technology
High concentration nitrogen oxide is frequently encountered in nitric acid industry（NOX）The process problem of tail gas, the discharge of nitrogen oxides,
There is a strict standard in country, and the process of high concentration nitrogen oxide, and difficulty is very big, relatively costly.The nitrogen for using both at home and abroad at present
Oxide exhaust gas treating method is divided into the big class of dry and wet two.Dry method be catalyzed reduction based on, under high temperature, with reducing agent will
NOXCatalysis is reduced to N2Deng gas, purely from environmental angle, process object is low concentration of NOX, for higher concentration NOX, effect
Fruit is not good, and can not recycle NOX, and absorption can be by NOXIt is converted into HNO3, for nitric acid industry, economic implications is long-range
In dry method.Absorption is one kind of wet method, and absorption process is converted into nitric acid or nitric acid using water, acid or aqueous slkali absorbing NOx
Salt.Absorption has non-pressure process, synthesis, middle-pressure process, high-pressure process and double pressurized method, and double pressurized method, additive method are mainly adopted at present
Seldom adopt, because NO in tail gas after processingXConcentration Piao is high.Absorption is completed in countercurrent absorber, industrial general employing
Multistage absorption.
The absorption process of nitrogen oxides, also acid absorb and Alkali absorption.There are some researches show, NO2When absorbing in dust technology,
The oxidation of NO is mainly carried out in gas liquid film and liquid phase, and the oxidation of NO is a slow process, low temperature and is pressurized with beneficial to oxygen
Change the carrying out of reaction, therefore adopt double pressurized method more at present, but the rising of pressure necessarily increases equipment cost and operating cost,
Energy consumption increases；And current ordinary-pressure absorption process tail gas concentration is higher, seldom adopts.Reducing absorption temperature can increase NO's
Dim eyesight speed, improves oxidizability, and using absorption, but removing reaction heat makes device structure complicated.
（Three）The content of the invention
The utility model is in order to make up the deficiencies in the prior art, there is provided a kind of simple structure, high concentration easy to use
The multistage chelating absorption plant of nitrogen oxides.
The utility model is achieved by the following technical solution：
A kind of multistage chelating absorption plant of high concentration nitrogen oxide, including lower end arranges the absorption tower of smoke inlet, it is special
Levy and be：The absorption tower bottom is loaded with spray liquid, and spray of the spray liquid by pump connection positioned at absorption tower upper end exchanges system
System, the exhanst gas outlet on absorption tower top connects the lower end smoke inlet of spray column, and in absorption tower and spray column dynamic is mounted on
Film mass transfer device, spray column is three for being serially connected.
The utility model arranges spray exchange system in absorption tower, by the spray for chelating denitration medicament, makes not dissolving in
The nitric oxide of water fully dissolves reaction, realizes the ultra-clean discharge of nitrogen oxides；Dynamic film mass transfer device then promotes flue gas and absorbs
The mass transport process of liquid, hence it is evident that improve the absorption efficiency on absorption tower；Then flue gas enters spray column, and to flue gas conventional treatment is carried out,
The dust and droplet in flue gas is fully absorbed, the sufficiently cleaned up of flue gas is realized.
More excellent technical scheme of the present utility model is：
The absorption tower lower section is provided with the circulation cell system of its internal spray liquid of connection, by circulating cell system to absorbing
Spray liquid in tower is supplemented.
The spray column connects sealant supplement cylinder by measuring pump, by the metering of measuring pump, spray column is timed quantitatively
Spray liquid supplement.
The spray exchange system on the absorption tower is the four-layer structure laid up and down, and three layers of spray are laid with spray column
Pipe, realizes being fully contacted and absorb to flue gas.
The circulatory pool system connectivity circulating water regeneration system, to the spray liquid in circulatory pool regeneration renewal is carried out, so as to
In recycling.
The utility model simple structure, it is reasonable in design, high concentration nitrogen oxide can be fully absorbed, realize waste recovery
Utilize, tail gas and tail washings can reach discharging standards, environmentally friendly low cost, economic benefit and social benefit are obvious.
（Four）Description of the drawings
The utility model is further described below in conjunction with the accompanying drawings.
Fig. 1 is structural representation of the present utility model.
In figure, 1 absorption tower, 2 spray exchange systems, 3 dynamic film mass transfer devices, 4 spray columns, 5 circulation cell systems, 6 meterings
Pump, 7 sealant supplement cylinders.
（Five）Specific embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.The embodiment includes that lower end arranges the absorption tower of smoke inlet
1, the bottom of the absorption tower 1 is loaded with spray liquid, and spray liquid is located at the spray exchange system 2 of the upper end of absorption tower 1 by pump connection,
The exhanst gas outlet on the top of absorption tower 1 connects the lower end smoke inlet of spray column 4, and in absorption tower 1 and spray column 4 dynamic is mounted on
Film mass transfer device 3, spray column 4 is three for being serially connected.The lower section of the absorption tower 1 is provided with following for its internal spray liquid of connection
Cisterna ambiens system 5.The spray column 4 connects sealant supplement cylinder 7 by measuring pump 6.The spray exchange system 2 on the absorption tower 1 is upper and lower
Three layers of shower are laid with the four-layer structure of laying, spray column 4；The circulation communication loop water reuse (treatment system of cell system 5.
Flue gas containing high concentration nitrogen oxide enters absorption tower 1 from smoke inlet, the spray exchange system 2 on absorption tower 1 to
Lower spray chelating denitration medicament, makes water-fast nitric oxide in flue gas fully dissolve reaction, realizes the ultra-clean row of nitrogen oxides
Put；Whole removing is not limited by temperature, and removal temperature can be less than 20 DEG C, and the shower nozzle and floor for spraying exchange system 2 lays knot
Dynamic film mass transfer device 3 is closed, makes flue gas be sufficiently mixed reaction with solution, improve treatment effeciency, reach minimum discharge standard.
Dynamic film mass transfer device 3 can promote the mass transport process of flue gas and absorbing liquid, hence it is evident that improve the absorption effect on absorption tower 1
Rate, meanwhile, can also effectively collect fine particle（PM2.5 dust, aerosol）, heavy metal（Hg、As、Se、Pb、Cr）, it is organic
Pollutant（Polycyclic aromatic hydrocarbon, bioxin）Deng.
Circulation cell system 5 is designed under absorption tower 1, does not additionally take plant area's area, simplifies apparatus and process, is easy to safeguard.
Fluid infusion system is made up of measuring pump 6 and sealant supplement cylinder 7, and circulation fluid is consumed as the operation of system has part, design
Fluid infusion system controls fluid infusion.
Complete equipment increases resistance：Every grade of coefficient his about 700-800Pa, each elbow about 50Pa.
Discharge index：Design objective in strict accordance with unification of the motherland standard governance standard and the technological document of owner requirement,
Design parameter is：NOXConcentration of emission ＜ 100mg/m3。
Claims (5)
1. a kind of multistage chelating absorption plant of high concentration nitrogen oxide, including lower end arranges the absorption tower of smoke inlet（1）, it is special
Levy and be：The absorption tower（1）Bottom is loaded with spray liquid, and spray liquid is located at absorption tower by pump connection（1）The spray of upper end
Exchange system（2）, absorption tower（1）The exhanst gas outlet connection spray column on top（4）Lower end smoke inlet, absorption tower（1）And spray
Drench tower（4）Inside it is mounted on dynamic film mass transfer device（3）, spray column（4）For three be serially connected.
2. the multistage chelating absorption plant of high concentration nitrogen oxide according to claim 1, it is characterised in that：The absorption tower
（1）Lower section is provided with the circulation cell system of its internal spray liquid of connection（5）.
3. the multistage chelating absorption plant of high concentration nitrogen oxide according to claim 1, it is characterised in that：The spray column
（4）By measuring pump（6）Connection sealant supplement cylinder（7）.
4. the multistage chelating absorption plant of high concentration nitrogen oxide according to claim 1, it is characterised in that：The absorption tower
（1）Spray exchange system（2）For the four-layer structure laid up and down, spray column（4）Inside it is laid with three layers of shower.
5. the multistage chelating absorption plant of high concentration nitrogen oxide according to claim 2, it is characterised in that：The circulatory pool
System（5）Communication loop water reuse (treatment system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620937741.7U CN206082115U (en) | 2016-08-25 | 2016-08-25 | Multistage chelate absorbing device of high concentration nitrogen oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620937741.7U CN206082115U (en) | 2016-08-25 | 2016-08-25 | Multistage chelate absorbing device of high concentration nitrogen oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206082115U true CN206082115U (en) | 2017-04-12 |
Family
ID=58469783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620937741.7U Expired - Fee Related CN206082115U (en) | 2016-08-25 | 2016-08-25 | Multistage chelate absorbing device of high concentration nitrogen oxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206082115U (en) |
-
2016
- 2016-08-25 CN CN201620937741.7U patent/CN206082115U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170412 Termination date: 20200825 |
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| CF01 | Termination of patent right due to non-payment of annual fee |