CN205867945U - Gas dehumidifying device - Google Patents
Gas dehumidifying device Download PDFInfo
- Publication number
- CN205867945U CN205867945U CN201620871201.3U CN201620871201U CN205867945U CN 205867945 U CN205867945 U CN 205867945U CN 201620871201 U CN201620871201 U CN 201620871201U CN 205867945 U CN205867945 U CN 205867945U
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- Prior art keywords
- gas
- pipe
- drying tube
- sample gas
- air
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Abstract
The utility model discloses a gas dehumidifying device, include and carry out dry sample gas drying tube and carry out dry air drying pipe to the air sample gas, sample gas drying tube and air drying pipe are polymer membrane drying tube, warp air behind the air drying pipe drying process divide into two the tunnel, and is right under the first effect that sweeps the pump all the way air drying pipe sweeps, and it is right that another way sweeps at the second under the effect of pump the sample gas drying tube sweeps, and sample gas passes through under the effect of sampling pump the sample gas drying tube. The mode that the gas dehumidifying device that adopts above -mentioned structure used the self -loopa sweeps the sample gas drying tube, do not need not supply compressed air outward, therefore the volume of this device and weight is all very little, conveniently carry.
Description
Technical field
This utility model relates to a kind of gas treatment equipment.More particularly, to a kind of gas dehumidifying device.
Background technology
The detection of the flue gas waste gas concentration of emission of coal-burning power plant needs to install fume continuous monitoring system (CEMS), this CEMS
The instrument configuration of system include flue gas sampling probe, flue gas heat tracing line, traditional compressor or electronic cooler, accurate infrared or
Ultraviolet gas analyzer (for analyzing the concentration of each component of gas).The CEMS system of the most a large amount of power plant uses infrared-gas to divide
Analyzer, in order to effectively measure the gas component in flue gas (such as sulfur dioxide SO2, nitrogen oxides NOxDeng), need to remove in flue gas
Steam.Because conventional cooler produces the low temperature of 3-5C degree Celsius, the high temperature so passed through in the passage that flue gas flows through
Liquid condensed water is separated out after the cooling of flue gas cooled device.The sulfur dioxide SO of new standard criterion2Concentration of emission is from original 50-
200 milligrams/cubic metre are limited to the super low concentration of not higher than 35 milligrams/cubic metre, and SO2It is easily soluble in cooler to produce
Liquid condensation water in, cause effective SO of super low concentration in flue gas2Composition significantly runs off (especially in the flue gas of high humidity low-sulfur
SO2Turnover rate reaches 90%), and then make the accurate gas analyser in downstream cannot detect the SO in flue gas2Real content.
The technology using conventional cooler to remove steam cannot be effectively retained SO in flue gas2Composition, and the aqueous water of cooled device output
And SO2The strong acid produced after reaction also can corrode the infrared gas analyser in downstream, thus results in the every 2-3 of gas analyser big
Repairing, this law enforcement monitoring doing waste gas discharge to Ge Jia coal-burning power plant country and each monitoring station, each place is to cause the biggest technology to be stranded
Disturb and financial burden.
When measuring the gas component being easily melted into water under high humidity conditions, need to ensure in the distortionless premise of sample gas
Remove hydrone the most as far as possible, generally usePipe exsiccator is dried process to sample gas.As shown in Figure 1The structural representation of pipe exsiccator, sample gas entersAfter pipe exsiccator, it is diverted to several little directly
FootpathGuan Zhong,Pipe is parallel beam arrangement, be dried purge gas enter after exsiccator reverse with
Pipe wall contacts, passes throughThe psychrometric difference of pipe inside and outside wall selectively the hydrone in sample gas fromThe sample gas of inside pipe wall balances and takes out of.In pipe, the outside steam partial pressure i.e. difference of humidity is driven
The steam in sample gas is made to enter in purge gas by tube wall and be taken out of by purge gasPipe exsiccator, along with wet
Sample gas from sample gas import flow to outlet, hydrone constantly fromEnter in pipe in the purge gas outside pipe, so, sample
Gas passes throughAfter pipe exsiccator, its dew point is just lowered by, and other composition in sample gas does not the most change simultaneously
Become.
But it is thisPipe exsiccator could carry steam because needing the purge gas being dried from sample gas
Go out, and purge gas is provided by compressed gas source, the most thisPipe exsiccator is all large-scale fixed and very difficult
By its miniaturization, not readily portable.
Utility model content
The technical problems to be solved in the utility model is to provide the most portable a kind of sample gas dehydrating unit, this device
Can use in the environment of-10 DEG C to 40 DEG C, and can be on the premise of not losing sample gas component, sample gas
In hydrone except to dew point be less than 0 DEG C.
For solving above-mentioned technical problem, this utility model employing following technical proposals:
A kind of gas dehumidifying device, including the sample gas drying tube being dried sample gas and is dried air
Air drying tube, described sample gas drying tube and air drying tube are polymeric membrane drying tube, are dried through described air drying tube
Air after process is divided into two-way, and described air drying tube is purged under the effect of the first purge pump by a road, another road
Purging described sample gas drying tube under the effect of the second purge pump, sample gas passes through described under the effect of sampling pump
Sample gas drying tube.
Preferably, described sample gas drying tube and air drying tube are fluoropolymer gaseous state dehumidification pipe.
Preferably, described air drying tube includes the first housing and is arranged on the first of the first enclosure interior
Pipe, described first housing is provided with the first purge gas import and the outlet of the first purge gas and the first housing and firstPipe
Between be provided with the air flue that purge gas can be made to flow through, described firstPipe is dried process to air；Described sample gas is done
Dry pipe includes the second housing and is arranged on the second of the second enclosure interiorPipe, described second housing is provided with second and blows
Scavenging import and the second purge gas export and the second housing and secondThe gas that purge gas can be made to flow through it is provided with between pipe
Road, described secondPipe is dried process to sample gas.
Preferably, this device also includes that heater, described heater are arranged on the front portion of sample gas drying tube, right
The sample gas entering sample gas drying tube carries out heat treated, is provided with temperature sensor in described heater.
Preferably, this device also includes that control system, described temperature sensor will collect temperature signal and pass to control
System, control system sends instruction to described heater and the front portion of sample gas drying tube is heated to 75 DEG C～85 DEG C.
Preferably, to described firstPipe carries out being additionally provided with first throttle pipeline, by right in the gas circuit that purges
The setting of first throttle pipeline makes firstVacuum is produced at the outer wall of pipe.
Preferably, described firstVacuum at the outer wall of pipe is the vacuum less than 0.4Bar absolute pressure
Degree, through described firstAir more than 60% flow of pipe dehumidifying will be used for purging described secondPipe.
Preferably, described firstVacuum at the outer wall of pipe is the vacuum less than 0.3Bar absolute pressure
Degree, through described firstAir more than 70% flow of pipe dehumidifying will be used for purging described secondPipe.
Preferably, to described secondPipe carries out being additionally provided with throttling pipeline in the gas circuit that purges.
Preferably, the import department at described sample gas drying tube is additionally provided with particulate filter.
The beneficial effects of the utility model are as follows:
Sample gas drying tube is purged, no by the mode using the sample gas dehydrating unit application self-loopa of said structure
Needing outer for compressed air, therefore the volume and weight of this device is the least, is convenient for carrying.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is described in further detail.
Fig. 1 illustrates in prior artThe structural representation of pipe exsiccator.
Fig. 2 illustrates schematic diagram of the present utility model.
Detailed description of the invention
In order to be illustrated more clearly that this utility model, below in conjunction with preferred embodiments and drawings, this utility model is done into one
The explanation of step.Parts similar in accompanying drawing are indicated with identical reference.It will be appreciated by those skilled in the art that following
Specifically described content is illustrative and be not restrictive, and should not limit protection domain of the present utility model with this.
First explanation is neededMaterial is a kind of macromolecule member material, and this macromolecular material is also a kind of fluorine polymerization
Thing, by by this macromolecule member material in an extruder according to set condition extrusion different-diameter polymeric membrane drying tube or
Person's fluoropolymer drying tube, this polymeric membrane drying tube has unique gaseous state moisture under the conditions of psychrometric difference or hydrone pressure differential
Son migrates characteristic, and the vaporous water molecule utilizing this characteristic to remove in sample gas is dried dehumidifying, thus this drying tube has gaseous state
Moisture performance.The sample gas of certain flow can be dehumidified by this polymeric membrane drying tube with used aloned, or by multiple macromolecules
The sample gas that flow is big is dehumidified by the combination of film drying tube.
As in figure 2 it is shown, a kind of gas dehumidifying device includes air drying tube 10 withering to air and to sample
Product gas withering sample gas exsiccator 20, air drying tube 10 includes the first housing and be provided at its inner portion firstPipe, the first housing offers the first purge gas import and the outlet of the first purge gas, the first housing and firstIt is provided with between pipe and purge gas can be made to flow through firstThe gas circuit of tube outer surface.Sample gas drying tube 20 includes
Two housings and secondPipe, the second housing offers the second purge gas import and the outlet of the second purge gas, the second shell
Body and secondIt is provided with between pipe and purge gas can be made to flow through secondThe gas circuit of tube outer surface.First purge gas
Connecting in import and have first throttle pipeline 12, the second purge gas import connects second section flow tube road 22, the first purge pump 11
Import and the first purge gas outlet, the import of the second purge pump 21 and the second purge gas outlet.Through firstAir after pipe dried is divided into two-way, and a road and the first purge gas inlet communication, at the first purge pump 11
To first under effectPipe purges, thus firstThe inside and outside wall of pipe produces a hydrone
Pressure reduction, by this psychrometric difference as driving force flowing through firstHydrone in the air of pipe moves endlessly
Move on to firstOuter wall, then purge out, just first through 11 hydrones migrated out of the first purge pumpThe exit of pipe constantly produces dry air, makes first by first throttle pipeline 12The outer wall of pipe
Produce vacuum, under the effect of the first purge pump firstProduce less than 0.4Bar absolute pressure at pipe lateral wall
Vacuum, under air room temperature environment, then the dew point of dry air can reach-20 DEG C；Another road is with the second purge gas import even
Logical, to second under the effect of the second purge pump 21Pipe purges, through firstThe 60% of pipe dehumidifying
Air more than flow is used for purging secondPipe, based on same principle, secondThe inside and outside wall of pipe
Can produce a hydrone pressure reduction the highest, the hydrone of this pressure differential sample gas passes through secondThe sulfonic acid of pipe
Base side chain is moved out, and under the effect of sampling pump 23, sample gas constantly flows through secondPipe, thus to sample gas
Carry out removal moisture drying.Sample gas is dehumidified by the mode using the gas dehumidifying device application self-loopa of said structure,
Be no longer necessary to outer for compressed air as purge gas, therefore can make midget plant and be easy to carry.
Gas dehumidifying device in this enforcement row also includes system control cpu 30, humidity sensor 40, heater 50 and
Particulate filter 60.Particulate filter 60 and secondThe inlet communication of pipe, for the filtration to sample gas.
Heater 50 is arranged on the front end of sample gas drying tube 10 for entering secondThe sample gas of pipe heats,
Heater 50 includes that temperature sensor 51, temperature sensor 51 will collect temperature signal and pass to system control cpu 30,
System control cpu 30 sends control instruction to heater 50, controls secondThe temperature of pipe front portion,The migration of hydrone is followed first order kinetics by pipe, i.e. along with the rising of temperature, and the migration rate meeting of its hydrone
Promote, but along with the lifting of temperature,The constraint of hydrone can be strengthened by pipe itself, and in the present embodiment, temperature is set in
80℃.Humidity sensor 40 is arranged on the exit of sampling pump 23, the temperature-humidity signal transmission that humidity sensor 40 will collect
To system control cpu 30, and by the real-time humidity of display screen display sample gas.Eventually pass device of the present utility model to do
Sample gas after dry process enters analyser and carries out the mensuration of component.
Obviously, above-described embodiment of the present utility model is only for clearly demonstrating this utility model example, and
It is not the restriction to embodiment of the present utility model, for those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms, cannot all of embodiment be given exhaustive here,
Every belong to obvious change or variation that the technical solution of the utility model extended out still in of the present utility model
The row of protection domain.
Claims (10)
1. a gas dehumidifying device, it is characterised in that: include the sample gas drying tube that sample gas is dried and to air
The air drying tube being dried, described sample gas drying tube and air drying tube are polymeric membrane drying tube, through described air
Air after drying tube dried is divided into two-way, and described air drying tube is blown under the effect of the first purge pump by a road
Sweeping, described sample gas drying tube is purged under the effect of the second purge pump by another road, and sample gas is in the effect of sampling pump
Under by described sample gas drying tube.
Gas dehumidifying device the most according to claim 1, it is characterised in that: described sample gas drying tube and air drying tube are equal
For fluoropolymer gaseous state dehumidification pipe.
Gas dehumidifying device the most according to claim 2, it is characterised in that: described air drying tube include the first housing and
It is arranged on the first of the first enclosure interiorPipe, described first housing is provided with the first purge gas import and the first purging
Gas outlet and the first housing and firstThe air flue that purge gas can be made to flow through it is provided with between pipe, described first
Pipe is dried process to air；Described sample gas drying tube includes the second housing and is arranged on the second of the second enclosure interiorPipe, described second housing is provided with the second purge gas import and the outlet of the second purge gas and the second housing and secondThe air flue that purge gas can be made to flow through it is provided with between pipe, described secondPipe is dried place to sample gas
Reason.
Gas dehumidifying device the most according to claim 3, it is characterised in that: this device also includes heater, described in add
Thermal is arranged on the front portion of sample gas drying tube, heats the sample gas entering sample gas drying tube, described heating
Temperature sensor it is provided with inside device.
Gas dehumidifying device the most according to claim 4, it is characterised in that: this device also includes control system, described temperature
Degree sensor will collect temperature signal and pass to control system, and control system sends instruction to described heater and done by sample gas
The front portion of dry pipe is heated to 75 DEG C～85 DEG C.
Gas dehumidifying device the most according to claim 3, it is characterised in that: to described firstPipe purges
Gas circuit on be additionally provided with first throttle pipeline, by the setting of first throttle pipeline is made firstAt the outer wall of pipe
Produce vacuum.
Gas dehumidifying device the most according to claim 6, it is characterised in that: described firstAt the outer wall of pipe
Vacuum is the vacuum less than 0.4Bar absolute pressure, through described firstSky more than 60% flow of pipe dehumidifying
Gas will be used for purging described secondPipe.
Gas dehumidifying device the most according to claim 6, it is characterised in that: described firstAt the outer wall of pipe
Vacuum is the vacuum less than 0.3Bar absolute pressure, through described firstSky more than 70% flow of pipe dehumidifying
Gas will be used for purging described secondPipe.
Gas dehumidifying device the most according to claim 3, it is characterised in that: to described secondPipe purges
Gas circuit on be additionally provided with second section flow tube road.
Gas dehumidifying device the most according to claim 1, it is characterised in that: described sample gas drying tube import department also
It is provided with particulate filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620871201.3U CN205867945U (en) | 2016-08-11 | 2016-08-11 | Gas dehumidifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620871201.3U CN205867945U (en) | 2016-08-11 | 2016-08-11 | Gas dehumidifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205867945U true CN205867945U (en) | 2017-01-11 |
Family
ID=57702759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620871201.3U Ceased CN205867945U (en) | 2016-08-11 | 2016-08-11 | Gas dehumidifying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205867945U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108479319A (en) * | 2018-05-03 | 2018-09-04 | 东莞理工学院 | A kind of tubular type semi-permeable membrane dehumidifier |
| CN112540151A (en) * | 2019-09-23 | 2021-03-23 | 中国石油天然气集团有限公司 | Device and method for detecting volatile gas in medium |
-
2016
- 2016-08-11 CN CN201620871201.3U patent/CN205867945U/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108479319A (en) * | 2018-05-03 | 2018-09-04 | 东莞理工学院 | A kind of tubular type semi-permeable membrane dehumidifier |
| CN112540151A (en) * | 2019-09-23 | 2021-03-23 | 中国石油天然气集团有限公司 | Device and method for detecting volatile gas in medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20181114 Decision number of declaring invalidation: 37796 Granted publication date: 20170111 |
|
| IW01 | Full invalidation of patent right |