CN208721484U - A kind of flue gas pre-processing device - Google Patents
A kind of flue gas pre-processing device Download PDFInfo
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- CN208721484U CN208721484U CN201820328963.8U CN201820328963U CN208721484U CN 208721484 U CN208721484 U CN 208721484U CN 201820328963 U CN201820328963 U CN 201820328963U CN 208721484 U CN208721484 U CN 208721484U
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- drier
- flue gas
- inner tube
- processing device
- analyzer
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Abstract
The utility model discloses a kind of flue gas pre-processing device, including drier, the drier is connect with analyzer, before flue gas to be measured enters the analyzer, removes the moisture in flue gas to be measured using the drier；The drier includes inner and outer tubes；The inner tube of the drier is arranged in the drier outer tube, at the double-deck tubular structure；The entrance of the drier inner tube connects filter, exports linking parsing instrument；The entrance of the drier outer tube connects gas compressing apparatus, outlet connection atmospheric environment；The dryer export connects the analyzer；The analyzer is the infrared spectrum analyser based on non-dispersive IR radiation absorption.The utility model is removed water using Nafion pipe, overcomes fluctuation drift of the analyzer data under moisture interference caused by the water removal of conventional pretreatment equipment is not thorough.
Description
Technical field
The utility model belongs to continuous flue gas monitoring field, specifically, being related to a kind of flue gas pre-processing device.
Background technique
CEMS is the abbreviation of English Continuous Emission Monitoring System, i.e. flue gas monitors automatically
System.There is data fluctuations drift often in the small-range infrared spectrum analyser being commonly used in CEMS, returns to zero phenomenon.Infrared analysis
The working principle of instrument is based on the absorption of non-dispersive IR radiation, by the attenuation rate amplitude for measuring characteristic wavelengths infrared ray
To measure the concentration of sulfur dioxide, oxides of nitrogen gas.Since infrared spectrum analyser is sensitive to hydrone, traditional flue gas pretreatment is set
It is standby that moisture content cannot be effectively reduced, cause analyzer data due to moisture interference and there is a phenomenon where fluctuation is drifted about so that nothing
Method accurately measures the concentration of sulfur dioxide.
In view of this special to propose the utility model.The utility model has used Nafion technology.Nafion is polytetrafluoroethyl-ne
AlkeneWith perfluor -3,6- diepoxy -4- methyl -7- decene-sulfuric acid copolymer.The driving force of Nafion pipe dehumidifying
It is the psychrometric difference inside and outside pipe.Water translocation in Nafion tube wall is with sulfonicization of the high-hydrophilic in Nafion material
Based on affinity.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of flue gas pre-processing device, flue gas pretreatment
Equipment can effectively remove the moisture in flue gas to be measured, and the flue gas pre-processing device in the utility model is applied to infrared spectrum analyser
On, the fluctuation drift that flue gas analyzer data occur due to moisture interference can be solved, so that infrared spectrum analyser can be accurate in real time
The concentration of ground measurement sulfur dioxide.
Specifically, the utility model uses the following technical solution.
A kind of flue gas pre-processing device, including drier, the drier are connect with analyzer, described in flue gas entrance to be measured
Before analyzer, the moisture in flue gas to be measured is removed using the drier；The drier includes inner and outer tubes；The drying
The inner tube of device is arranged in the drier outer tube, at the double-deck tubular structure；The entrance of the drier inner tube connects filter,
Export linking parsing instrument；The entrance of the drier outer tube connects gas compressing apparatus, outlet connection atmospheric environment；The drying
Device outlet connects the analyzer；The analyzer is the infrared spectrum analyser based on non-dispersive IR radiation absorption.
Further, the inner tube of the drier is infiltration drying tube；The drier is permeation dryer.
Further, the flue gas to be measured flows in drier inner tube, and because of psychrometric difference, steam is out of drier inner tube
Wall is transmitted to drier outer wall of inner tube, passes through the sulfonic group of Nafion pipe.
Further, the outer tube is blowback tracheae, and blowback air is dry, clean, continuous air or nitrogen, described anti-
It blows and the steam on inner tube lateral wall is taken away into inner tube lateral wall.
Further, the flow velocity of the blowback air is two to three times of inner tube wet flue gas flow velocity, and the flow direction of blowback air with
The flow direction of flue gas is on the contrary, make the blowback air effectively take away the steam on said inner tube lateral wall.
Further, the outer tube is connected with compressed air feedway or compressed nitrogen feedway, anti-for guaranteeing
The continuous supply blown.
Further, the filter includes protecting filter and mode filter；The protection filter and the mould
Formula filter passes through piping connection.
Further, the permeation dryer and mode filter pass through piping connection.
Further, the protection filter with and the sampling pump that is connected of acid condenser be connected.
Further, the flue gas pre-processing device is mounted on the desulfurization exit in thermal power plant.
Due to having used permeation dryer, before flue gas to be measured enters analyzer, flue gas to be measured is effectively dried,
Eliminate the moisture to disturb to analyzer so that analyzer can real-time stabilization measurement sulfur dioxide etc. concentration, keep away
The data fluctuations for having exempted to be interfered by aqueous vapor and generated are drifted about.
Moisture in flue gas to be measured is effectively transferred to outer tube outer wall from inner tube wall by the inner tube of permeation dryer.Due to
The inner tube of permeation dryer is made of Nafion material, while Nafion material removes moisture in flue gas, keeps flue gas to be measured
Other components are not lost.Therefore, the infrared spectrum analyser of CEMS can accurately measure the concentration of sulfur dioxide.
The outer tube of permeation dryer, i.e. blowback tracheae, the flow velocity of blowback air are two to three times of inner tube wet flue gas flow velocity, and
The flow direction of blowback air and the flow direction of flue gas on the contrary, the blowback air is made effectively to take away the steam on said inner tube lateral wall,
It ensure that the psychrometric difference of Nafion tube wall two sides, more efficiently remove the aqueous vapor in flue gas to be measured.
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing.
Detailed description of the invention
Fig. 1 is flue gas pre-processing device schematic diagram disclosed in the utility model.
It should be noted that these attached drawings and verbal description are not intended to limit the design of the utility model in any way
Range, but illustrate the concept of the utility model for those skilled in the art by referring to specific embodiments.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
The technical solution in embodiment is clearly and completely described in attached drawing in type embodiment, and following embodiment is for illustrating this
Utility model, but be not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that term " on ", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for describing the utility model and simplifying description, rather than the device or element of indication or suggestion meaning must have specific side
Position is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.
For the ordinary skill in the art, can be understood with concrete condition above-mentioned term in the present invention specifically contain
Justice.
A kind of flue gas pre-processing device of the utility model is described in detail with reference to the accompanying drawing.
As shown in Figure 1, in flue gas pre-processing device of the invention, sample gas pass sequentially through filter probe device, sampling probe,
Heat traced pipeline, sampling solenoid valve, hygronom, triple valve, condenser, sampling pump, protection filter, mode filter and infiltration are dry
Dry device, into analyzer.
As shown in Figure 1, a kind of flue gas pre-processing device of the invention, including drier, the drier and analyzer connect
It connects, before flue gas to be measured enters the analyzer, removes the moisture in flue gas to be measured using the drier；The drier includes
Inner and outer tubes；The inner tube of the drier is arranged in the drier outer tube, at the double-deck tubular structure；In the drier
The entrance of pipe connects filter, exports linking parsing instrument；The entrance of the drier outer tube connects gas compressing apparatus, and outlet connects
Connect atmospheric environment；The dryer export connects the analyzer；The analyzer is using non-dispersive IR radiation absorption as base
The infrared spectrum analyser of plinth.
The inner tube of the drier of the invention is infiltration drying tube；The drier is permeation dryer.Permeate drying
The inner tube of device is made of Nafion material.The working principle of permeation dryer is using psychrometric difference, due to the sulfonic acid in Nafion
Base has high-hydrophilic, so aqueous vapor is by the Nafion inside pipe wall absorption as permeation dryer inner tube.As long as inside and outside Nafion pipe
There are psychrometric difference, the migration of steam will carry out always.
The flue gas to be measured of the invention flows in drier inner tube；Because of psychrometric difference, steam from drier inner tube wall,
It is transmitted to drier outer wall of inner tube, passes through the sulfonic group of Nafion pipe.Since sulfonic group has a very strong hydrophily, aqueous vapor can be
In Nafion tube wall, is transmitted from another sulfonic group of sulfonic acid basal orientation, be transferred to outer wall of inner tube from inner tube wall.
The outer tube of the invention is blowback tracheae, and blowback air is dry, clean, continuous air or nitrogen, described anti-
It blows and the steam on inner tube lateral wall is taken away into inner tube lateral wall.Since blowback air is dry, dry blowback air and inner tube
Aqueous vapor on outer wall comes into full contact with, so that the aqueous vapor rapid evaporation on outer wall of inner tube, enters atmosphere with blowback air together.
The flow velocity of the blowback air of the invention is two to three times of inner tube wet flue gas flow velocity, and the flow direction and cigarette of blowback air
The flow direction of gas is on the contrary, make the blowback air effectively take away the steam on said inner tube lateral wall.If the water of outer wall of inner tube
Gas evaporation rate is slow, and the flow velocity of blowback air can be improved.
The outer tube of the invention is connected with compressed air feedway or compressed nitrogen feedway, for guaranteeing blowback
The continuous supply of gas.Because the effect of blowback air be accelerate evaportor outer wall of inner tube on steam, water will not in air
Oxygen reaction, therefore compressed air feedway can be selected.Compressed air feedway is than compressed nitrogen feedway
There is the advantage in price, it is preferable that compressed air feedway can be used.
As shown in Figure 1, the filter of the invention includes, filter and mode filter are protected；The protection filtering
Device and the mode filter pass through piping connection.Filter filters the solid in flue gas to be measured, especially tiny solid
Grain.Protection filter can filter flue gas small molecular particulate matter, and mode filter is suitable for more tiny solid particle.
The permeation dryer and mode filter of the invention passes through piping connection.The chimney filter of mode filter can be by
Stainless steel or glass are constituted, and can be directly connected with the inner tube of permeation dryer.
The protection filter of the invention with and the sampling pump that is connected of acid condenser be connected.Acid condenser ratio
Conventional condenser has better effect on moisture extraction.
The flue gas pre-processing device of the invention is mounted on the desulfurization exit in thermal power plant, with the infrared analysis
Instrument connection.The infrared spectrum analyser is mainly used for measuring SO2Concentration, also can measure SO3、NO、NO2、HCl、HF、O2, CO etc.
Concentration.
The above is only the preferred embodiment of the utility model, not makees in any form to the utility model
Limitation, although the utility model has been disclosed with preferred embodiment as above, is not intended to limit the utility model, any to be familiar with
The technical staff of this patent is not departing within the scope of technical solutions of the utility model, when the technology contents work using above-mentioned prompt
A little equivalent embodiment changed or be modified to equivalent variations out, but all contents without departing from technical solutions of the utility model,
Any simple modification, equivalent change and modification made by the above technical examples according to the technical essence of the present invention, still belong to
In the range of the utility model.
Claims (10)
1. a kind of flue gas pre-processing device characterized by comprising drier, the drier are connect with analyzer, cigarette to be measured
Before gas enters the analyzer, the moisture in flue gas to be measured is removed using the drier；The drier includes inner tube and outer
Pipe；The inner tube of the drier is arranged in the drier outer tube, at the double-deck tubular structure；The entrance of the drier inner tube
Filter is connected, linking parsing instrument is exported；The entrance of the drier outer tube connects gas compressing apparatus, and outlet connects big compression ring
Border；The dryer export connects the analyzer；The analyzer is infrared based on non-dispersive IR radiation absorption
Analyzer.
2. a kind of flue gas pre-processing device according to claim 1, which is characterized in that the inner tube of the drier is infiltration
Drying tube；The drier is permeation dryer.
3. a kind of flue gas pre-processing device according to claim 1, which is characterized in that the flue gas to be measured is in drier
It circulates in pipe；Because of psychrometric difference, steam is transmitted to drier outer wall of inner tube from drier inner tube wall, passes through the sulphur of Nafion pipe
Acidic group.
4. a kind of flue gas pre-processing device according to claim 1, which is characterized in that the outer tube is blowback tracheae, instead
It blows and takes away the steam on inner tube lateral wall on the outside of inner tube for dry, clean, continuous air or nitrogen, the blowback air
Wall.
5. a kind of flue gas pre-processing device according to claim 4, which is characterized in that the flow velocity of the blowback air is inner tube
Two to three times of wet flue gas flow velocity, and the flow direction of blowback air and the flow direction of flue gas are on the contrary, take away the blowback air effectively
Steam on said inner tube lateral wall.
6. a kind of flue gas pre-processing device according to claim 1, which is characterized in that the outer tube and compressed air supply
Device or compressed nitrogen feedway are connected, for guaranteeing the continuous supply of blowback air.
7. a kind of flue gas pre-processing device according to claim 2, which is characterized in that the filter includes protecting
Filter and mode filter；The protection filter and the mode filter pass through piping connection.
8. a kind of flue gas pre-processing device according to claim 7, which is characterized in that the permeation dryer and the mould
Formula filter passes through piping connection.
9. a kind of flue gas pre-processing device according to claim 7, which is characterized in that the protection filter and and acid
The sampling pump that condenser is connected is connected.
10. a kind of flue gas pre-processing device according to claim 1, which is characterized in that the flue gas pre-processing device peace
Mounted in the desulfurization exit in thermal power plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820328963.8U CN208721484U (en) | 2018-03-09 | 2018-03-09 | A kind of flue gas pre-processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820328963.8U CN208721484U (en) | 2018-03-09 | 2018-03-09 | A kind of flue gas pre-processing device |
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| Publication Number | Publication Date |
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| CN208721484U true CN208721484U (en) | 2019-04-09 |
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| CN201820328963.8U Active CN208721484U (en) | 2018-03-09 | 2018-03-09 | A kind of flue gas pre-processing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110526213A (en) * | 2019-10-14 | 2019-12-03 | 苏州金宏气体股份有限公司 | A kind of hydrogen bromide purification process |
| CN110595859A (en) * | 2019-10-29 | 2019-12-20 | 长沙开元弘盛科技有限公司 | Water removal method, analyzer and water removal device thereof |
-
2018
- 2018-03-09 CN CN201820328963.8U patent/CN208721484U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110526213A (en) * | 2019-10-14 | 2019-12-03 | 苏州金宏气体股份有限公司 | A kind of hydrogen bromide purification process |
| CN110595859A (en) * | 2019-10-29 | 2019-12-20 | 长沙开元弘盛科技有限公司 | Water removal method, analyzer and water removal device thereof |
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