CN209570423U - A kind of depth de-watering apparatus based on permeable dehumidification principle - Google Patents
A kind of depth de-watering apparatus based on permeable dehumidification principle Download PDFInfo
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- CN209570423U CN209570423U CN201920065084.5U CN201920065084U CN209570423U CN 209570423 U CN209570423 U CN 209570423U CN 201920065084 U CN201920065084 U CN 201920065084U CN 209570423 U CN209570423 U CN 209570423U
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Abstract
The utility model discloses a kind of depth de-watering apparatus based on permeable dehumidification principle, including sample gas inlet, outlet and instrument gas entrance, outlet.Sample gas inlet is connected to via pipeline with the interior entrance of permeable dehumidification device, the inner outlet of permeable dehumidification device is connected to via pipeline with sample gas outlet, instrument gas entrance is connected to via pipeline with the entrance of instrument gas drying device, the outlet of instrument gas drying device is connected to via pipeline with the outer entrance of permeable dehumidification device, the outer vent of permeable dehumidification device is via pipeline and instrument gas outlet, gas flow regulating valve is installed on pipeline between the outlet of instrument gas drying device and the outer entrance of permeable dehumidification device, gas flowmeter is installed on pipeline between outer vent and the instrument gas outlet of permeable dehumidification device.The utility model realizes the depth water removal to sample gas, and water removal effect is good, stable and reliable operation, it is ensured that measurement accuracy of the gas analyzer to sample gas.
Description
Technical field
The utility model relates to a kind of depth de-watering apparatus realized based on permeable dehumidification principle, belong to gas water removal dehumidifying
Field.
Background technique
For the flue gas discharge continuous monitoring system (CEMS) of stationary source, more typical analysis mode currently on the market
It is that cold dry tap is followed the example of, i.e., cooling water removal is carried out to the sample gas of extraction, is then fed into gas analyzer and carries out gas concentration point
Analysis.Common gas analyzer generallys use NDIR (non-dispersive IR line technology) principle, the suction due to water to infrared spectroscopy
Receipts range is wider, therefore using the gas analyzer of above-mentioned principle when measuring to sample gas, moisture can be to sample gas
The component detection of body interferes, and moisture content is higher, interferes caused by measurement bigger, significantly impacts the accurate of measurement
Property.Currently, the sample gas dew point that most of gas analyzer using above-mentioned principle is sent out is between 3 DEG C~4 DEG C, it is seen that water
Divide content larger, certainly will can generate large effect to measurement result, when instrument long-term work is in the environment of high-moisture, also
Will lead to instrument, drift occur excessively high, the problems such as poor linearity, internal contamination.
Utility model content
The purpose of this utility model is to provide a kind of depth de-watering apparatus based on permeable dehumidification principle, realize pair
The depth of sample gas removes water, and water removal effect is good, stable and reliable operation, it is ensured that gas analyzer is quasi- to the measurement of sample gas
True property.
To achieve the goals above, the utility model uses following technical scheme:
A kind of depth de-watering apparatus based on permeable dehumidification principle, it is characterised in that: it includes sample gas inlet, sample
Gas vent, instrument gas entrance and instrument gas outlet, in which: sample gas inlet is via pipeline and permeable dehumidification device
Interior entrance connection, the inner outlet of permeable dehumidification device are connected to via pipeline with sample gas outlet, and instrument gas entrance is via pipe
Road is connected to the entrance of instrument gas drying device, and the outlet of instrument gas drying device is via pipeline and permeable dehumidification device
The connection of outer entrance, the outer vent of permeable dehumidification device via pipeline and instrument gas outlet, instrument gas drying device
Gas flow regulating valve is installed, permeable dehumidification device is gone out on the pipeline between outlet and the outer entrance of permeable dehumidification device
Gas flowmeter is installed on pipeline between mouth and instrument gas outlet.
The utility model has the advantages that:
The utility model is a supplement for following the example of traditional cold dry tap water removal, is used to carry out sample gas further
Water removal further decreases the moisture content being sent into the sample gas of gas analyzer, reduces moisture and generates to gas analyzer
Measurement influences, it is ensured that the measurement accuracy of sample gas, elimination moisture brings gas analyzer to drift about gas analyzer
The problems such as height, poor linearity, internal contamination, stable and reliable operation.
Detailed description of the invention
Fig. 1 is the structure composition schematic diagram of the utility model depth de-watering apparatus.
Specific embodiment
As shown in Figure 1, depth de-watering apparatus 10 of the utility model based on permeable dehumidification principle includes sample gas inlet
14, sample gas outlet 11, instrument gas entrance 12 and instrument gas outlet 13, in which: sample gas inlet 14 is via pipeline
It is connected to the interior entrance for the permeable dehumidification device 24 for being used to carry out further moisture removal processing to sample gas, permeable dehumidification dress
24 inner outlet is set to be connected to via pipeline with sample gas outlet 11, instrument gas entrance 12 via pipeline be used to instrument supply gas
Body is dried, conveys low dew point (- 15 DEG C or less) instrument gas as purge gas to permeable dehumidification device 24
The entrance of instrument gas drying device 21 is connected to, and the outlet of instrument gas drying device 21 is via pipeline and permeable dehumidification device 24
The connection of outer entrance, the outer vent of permeable dehumidification device 24 is connected to via pipeline with instrument gas outlet 13, and instrument gas is dried
The instrument supply gas being equipped on pipeline between the outlet of device 21 and the outer entrance of permeable dehumidification device 24 after adjusting drying
Body flow makes instrument gas keep stablizing the gas flow regulating valve that flow velocity passes through permeable dehumidification device 24 in the case where setting pressure
23, the outer vent and instrument gas of permeable dehumidification device 24, which export, to be equipped on the pipeline between 13 for detecting and showing reality
The gas flowmeter 22 of the instrument gas flow of output.
In the present invention, instrument gas drying device 21 is polymer separators formula drier.
Polymer separators formula drier is the existing instrument of this field, and polymeric hollow diaphragm is used to make a return journey moisture removal,
Structure is simple, and de-water ratio is high, and the operation is stable is efficient, does not need additional maintenance work, and no consumption product can be mentioned sustainedly and stably
For the instrument gas of low dew point (- 15 DEG C or less).
In the present invention, instrument gas drying device 21 is matched with gas flow regulating valve 23, can accomplish setting
Under constant-pressure, the drying instrument gas of low dew point is sustainedly and stably conveyed to permeable dehumidification device 24.The purpose designed in this way exists
In, if sufficiently stable low dew point instrument gas can not be provided, be difficult to ensure sample gas carry out permeable dehumidification after reach steady
Fixed low dew point, to following two problems easily occur: first, instrument gas dew point it is higher as purge gas when, take away
The ability of moisture is lower, so that the desiccation risen to sample gas is insufficient, the sample gas of output can still contain more
Moisture；Second, if the dew point of instrument gas is unstable, though sample gas dew point after permeable dehumidification decreases, meeting
Biggish fluctuation is generated with the fluctuation of instrument gas dew point, to be unable to reach the mesh stablized and export low dew point sample gas
's.
In the present invention, permeable dehumidification device 24 is the existing instrument of this field, may include by osmotic absorbent material
(such as Nafion material, Nafion are polytetrafluoroethylene (PTFE) and the copolymerization of perfluor -3,6- diepoxy -4- methyl -7- decene-sulfuric acid to material
Object) made of inner tube, outer tube sleeve in interior tube outside, the entrance of the inner tube for flow through sample gas, outlet respectively with sample gas
Body entrance 14, sample gas outlet 11 are connected to, the entrance of outer tube, outlet respectively with the outlet of gas flow regulating valve 23, gas
The entrance of flowmeter 22 is connected to, and the cavity between inner tube and outer tube is used to the instrument gas to circulate as purge gas, in which: sample
Product gas is opposite with the flow direction of instrument gas.
On the one hand the dehumidification function of permeable dehumidification device 24 is the sulfonic group in the osmotic absorbent material used by its inner tube
It realizes, sulfonic group has very strong chemical affinity to moisture, has very high hydrophily, so when sample gas passes through inner tube
When, the moisture in sample gas can be adsorbed by the sulfonic group in inner tube, penetrate into outer wall of inner tube, thus moisture be all evaporated to it is outer
Guan Zhong is taken away by dry instrument gas.On the other hand, the dehumidifying power of permeable dehumidification device 24 is the inside and outside presentation steam of inner tube
What barometric gradient (there is psychrometric difference) was realized, as long as inner tube is inside and outside there are psychrometric difference, the vapor migration in inner tube will
Always it carries out, so need continuously to provide dry purge gas between inner and outer pipe.
In permeable dehumidification device 24, instrument gas flow design is advisable for twice greater than sample gas flow, in this way
It can reach good effect on moisture extraction.
In actual installation, sample gas inlet 14, sample gas outlet 11, instrument gas entrance 12 and instrument gas go out
Mouth 13, which is mounted on the same side of the utility model depth de-watering apparatus, to be advisable.
In use, by the instrument gas entrance 12 of the utility model depth de-watering apparatus 10,13 difference of instrument gas outlet
Gas access, outlet with correlate meter equipment connect, sample gas outlet 11 and the gas analyzer using NDIR principle
The connection of sample gas input port, the delivery outlet that sample gas inlet 14 usually follows the example of de-watering apparatus with traditional cold dry tap are connect,
A supplement of water removal is followed the example of as traditional cold dry tap.
Sample gas enters permeable dehumidification device 24 from sample gas inlet 14.Instrument gas (the instrument that such as factory provides
Gas or the compressed air of cleaning) enter from instrument gas entrance 12, enter after being dried by instrument gas drying device 21
Permeable dehumidification device 24.It is kept by adjusting gas flow regulating valve 23 as anti-based on the flow monitoring of gas flowmeter 22
The instrument gas of blowing is in the case where setting pressure with stable flow velocity to 24 sustainable supply of permeable dehumidification device.
In permeable dehumidification device 24, the flow direction of instrument gas and sample gas is on the contrary, be in the drying between inner and outer pipes
Instrument gas take away the most of moisture being saturated out in the sample gas in inner tube, thus based on osmosis water removal principle to sample
The purpose of product gas realization depth drying.Absorb sample of the instrument gas of moisture through 13 discharge of instrument gas outlet, after drying
Product gas is discharged into the gas analyzer using NDIR principle through sample gas outlet 11, carries out gas concentration point by gas analyzer
Analysis.
The utility model has the advantages that:
1, the moisture content in sample gas can be greatly reduced in the utility model, and the dew point of sample gas is made to drop to -15 DEG C
Hereinafter, avoiding producing bigger effect the measurement of gas analyzer.
2, compared with the modes such as silica gel particle, molecular sieve water removal, the water rem oval of the utility model is high, can get low dew point
The sample gas of (- 15 DEG C or less), also, the utility model does not need to provide consumables (silica gel particle), will not remove sample
Other components in gas will not generate interference to the measurement of gas analyzer.
3, the utility model can obviously reduce moisture and cause measurement influence to the gas analyzer using NDIR principle, reduce
Interference of the moisture to measurement result.
4, the utility model, which can obviously reduce, occurs excessively high, poor linearity etc. of drifting about using the gas analyzer of NDIR principle
Phenomenon reduces instrument and the problems such as internal contamination occurs.
5, the utility model is without mechanical moving element, therefore mechanical wear is not present, and long service life, water removal effect stabilization can
It leans on.
6, the utility model does not need power supply, is not required to consumptive material, is not required to drainage arrangement, energy conservation and environmental protection, and product cost is implemented as
This is low, suitable for popularizing.
The above is the utility model preferred embodiment and its technical principle used, for those skilled in the art
It is any based on technical solutions of the utility model basis without departing substantially from the spirit and scope of the utility model for member
On equivalent transformation, simple replacement etc. it is obvious change, belong within scope of protection of the utility model.
Claims (5)
1. a kind of depth de-watering apparatus based on permeable dehumidification principle, it is characterised in that: it includes sample gas inlet, sample gas
Body outlet, instrument gas entrance and instrument gas outlet, in which: sample gas inlet is via in pipeline and permeable dehumidification device
Entrance connection, the inner outlet of permeable dehumidification device are connected to via pipeline with sample gas outlet, and instrument gas entrance is via pipeline
It is connected to the entrance of instrument gas drying device, the outlet of instrument gas drying device is outer via pipeline and permeable dehumidification device
Entrance connection, via pipeline and instrument gas outlet, instrument gas drying device goes out the outer vent of permeable dehumidification device
Gas flow regulating valve, the outer vent of permeable dehumidification device are installed on pipeline between mouth and the outer entrance of permeable dehumidification device
Gas flowmeter is installed on pipeline between instrument gas outlet.
2. as described in claim 1 based on the depth de-watering apparatus of permeable dehumidification principle, it is characterised in that:
The instrument gas drying device is polymer separators formula drier.
3. as described in claim 1 based on the depth de-watering apparatus of permeable dehumidification principle, it is characterised in that:
The permeable dehumidification device includes the inner tube made of osmotic absorbent material, and outer tube sleeve is in interior tube outside, for the sample that circulates
The entrance of the inner tube of product gas, outlet are connected to the sample gas inlet, the sample gas outlet respectively, and outer tube enters
Mouth, outlet are connected to the entrance of the outlet of the gas flow regulating valve, the gas flowmeter respectively, between inner tube and outer tube
Cavity be used to the instrument gas that circulates as purge gas, in which: sample gas is opposite with the flow direction of instrument gas.
4. as claimed in claim 3 based on the depth de-watering apparatus of permeable dehumidification principle, it is characterised in that:
In the permeable dehumidification device, instrument gas flow is greater than twice of sample gas flow.
5. according to any one of claims 1 to 4 based on the depth de-watering apparatus of permeable dehumidification principle, it is characterised in that:
The sample gas inlet, the sample gas outlet, the instrument gas entrance and instrument gas outlet installation
On the same side of the depth de-watering apparatus based on permeable dehumidification principle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920065084.5U CN209570423U (en) | 2019-01-15 | 2019-01-15 | A kind of depth de-watering apparatus based on permeable dehumidification principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920065084.5U CN209570423U (en) | 2019-01-15 | 2019-01-15 | A kind of depth de-watering apparatus based on permeable dehumidification principle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209570423U true CN209570423U (en) | 2019-11-01 |
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ID=68333136
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920065084.5U Active CN209570423U (en) | 2019-01-15 | 2019-01-15 | A kind of depth de-watering apparatus based on permeable dehumidification principle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209570423U (en) |
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2019
- 2019-01-15 CN CN201920065084.5U patent/CN209570423U/en active Active
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