CN215727109U - Water removal device for flue gas monitoring system and flue gas monitoring system - Google Patents
Water removal device for flue gas monitoring system and flue gas monitoring system Download PDFInfo
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- CN215727109U CN215727109U CN202120324692.0U CN202120324692U CN215727109U CN 215727109 U CN215727109 U CN 215727109U CN 202120324692 U CN202120324692 U CN 202120324692U CN 215727109 U CN215727109 U CN 215727109U
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- 239000003546 flue gas Substances 0.000 title claims abstract description 83
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 82
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 238000012544 monitoring process Methods 0.000 title claims abstract description 45
- 238000001816 cooling Methods 0.000 claims abstract description 47
- 239000000779 smoke Substances 0.000 claims abstract description 44
- 239000012528 membrane Substances 0.000 claims abstract description 20
- 230000000903 blocking effect Effects 0.000 claims abstract description 15
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 14
- 230000001681 protective effect Effects 0.000 claims abstract description 10
- 238000005070 sampling Methods 0.000 claims description 18
- 239000007789 gas Substances 0.000 claims description 16
- 239000000126 substance Substances 0.000 claims description 8
- 239000003245 coal Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000003550 marker Substances 0.000 claims 1
- 238000000738 capillary electrophoresis-mass spectrometry Methods 0.000 abstract description 10
- 238000000605 extraction Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000428 dust Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000007791 dehumidification Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 101000604049 Homo sapiens Sodium-dependent phosphate transport protein 4 Proteins 0.000 description 1
- 102100038439 Sodium-dependent phosphate transport protein 4 Human genes 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005250 beta ray Effects 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of flue gas monitoring, and provides a water removal device for a flue gas monitoring system and the flue gas monitoring system, aiming at solving the problem that a secondary cold cavity in a multi-stage water removal device for a CEMS instrument by using the existing direct extraction method cannot well play a water removal effect, wherein the water removal device comprises: the secondary cooling cavity is directly connected with the primary cooling cavity; a peristaltic pump, a protective filter and a water-blocking filter; and the membrane filter is arranged between the protection filter and the water blocking filter and comprises filter paper for absorbing water and dehumidifying. Through the adjustment of the structural relation of the smoke extraction element, the smoke immediately enters the secondary cooling cavity after coming out of the primary cooling cavity, so that the cooled area of the smoke is increased; and a membrane filter is added between the protective filter and the water-blocking filter, so that residual water vapor is further treated, and the condition that the smoke entering the analyzer does not contain moisture is improved.
Description
Technical Field
The utility model relates to the technical field of flue gas monitoring, in particular to a water removal device for a flue gas monitoring system and the flue gas monitoring system.
Background
CEMS is an abbreviation of Continuous Emission Monitoring System, and refers to a device that continuously monitors the concentration and total Emission of gaseous pollutants and particulate matters emitted from an atmospheric pollution source and transmits information to a competent department in real time, and is called an "automatic flue gas Monitoring System", also called a "Continuous flue gas Emission Monitoring System" or an "online flue gas Monitoring System".
The CEMS is composed of a gaseous pollutant monitoring subsystem, a particulate matter monitoring subsystem, a flue gas parameter monitoring subsystem and a data acquisition, processing and communication subsystem. The gaseous pollutant monitoring subsystem is mainly used for monitoring the concentration and the total emission amount of gaseous pollutants (sulfur dioxide, nitrogen oxides and the like); the particulate matter monitoring subsystem is mainly used for monitoring the concentration and the total emission amount of smoke dust; the smoke parameter monitoring subsystem is mainly used for measuring smoke flow rate, smoke temperature, smoke pressure, smoke oxygen content, smoke humidity and the like, and is used for integrating the total emission amount and converting related concentration; the data acquisition processing and communication subsystem is composed of a data acquisition unit and a computer system, acquires various parameters in real time, generates dry basis, wet basis and converted concentration corresponding to various concentration values, generates the accumulated discharge amount of the day, the month and the year, completes the compensation of lost data and transmits a report to a competent department in real time. The smoke dust test is developed from a cross-flue opacity dust meter and a beta-ray dust meter to an inserted type back scattering infrared light or laser dust meter, a front scattering, side scattering and electric quantity dust meter and the like.
According to different sampling modes, the CEMS mainly can directly extract measurement and can also be used for remote sensing measurement. The main problem of the CEMS sampling pretreatment link of the direct extraction method is water removal and dehumidification, and whether water can be effectively removed is a necessary condition about whether a CEMS analyzer can normally operate or not, and is one of the most difficult places for CEMS pretreatment.
The dehydration of current CEMS preliminary treatment mainly relies on the difference in temperature to condense into water with the moisture in the flue gas fast, and the temperature control that the flue gas accompanies the heat is at 140 degrees centigrade, and refrigerator temperature control is at 2 degrees centigrade, and the refrigerator cold chamber is two-chamber design, is equivalent to through the two-stage dehydration, then discharges through the peristaltic pump.
The inventor discovers that in the process of implementing the utility model: since the ultra-low emission, due to the use of SNCR (Selective Non-Catalytic Reduction, i.e. denitration technology corresponding to Selective Non-Catalytic Reduction), the humidity of flue gas becomes high, so that the pretreatment water removal is not thorough and clean. Although the cold cavity of the refrigerator is designed with double cavities, the smoke firstly passes through the primary cold cavity to remove water, then enters the protective filter after coming out, and then goes out to remove water for the second time; therefore, the secondary cooling cavity has no great change of temperature difference, the water removal effect is not obvious, and the secondary cooling cavity basically has no great effect.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that a secondary cooling cavity in a multi-stage water removal device for a CEMS instrument by using a direct extraction method cannot well play a role in water removal, the utility model provides a water removal device for a flue gas monitoring system and the flue gas monitoring system, wherein flue gas enters the secondary cooling cavity immediately after coming out of a primary cooling cavity by adjusting the structural relation of a flue gas extraction element, so that the cooled area of the flue gas is increased; and a membrane filter is added between the protection filter and the water blocking filter, so that residual water vapor is further processed, the condition that the smoke entering the analyzer does not contain water is improved, the measurement accuracy and stability of the analyzer are improved, and the service life of the analyzer is prolonged.
In order to achieve the above object, the technical solution provided by the present invention comprises:
one aspect of the present invention provides a water removal device for a flue gas monitoring system, which is characterized by comprising:
the secondary cooling cavity is directly connected with the primary cooling cavity, so that the flue gas immediately enters the secondary cooling cavity after coming out of the primary cooling cavity;
the peristaltic pump is used for discharging condensed water generated in the primary cold cavity and the secondary cold cavity;
the protective filter is connected with the outlet of the secondary cooling cavity;
the water blocking filter is arranged to isolate the moisture in the flue gas and send the flue gas after water removal to a flue gas analyzer; and
and the membrane filter is arranged between the protection filter and the water blocking filter and comprises filter paper for absorbing water and removing humidity.
In a preferred embodiment of the present invention, through holes communicated with each other are directly provided between the primary cooling chamber and the secondary cooling chamber, or the primary cooling chamber and the secondary cooling chamber are directly connected through a pipeline with a diameter smaller than 10 mm.
In a preferred embodiment of the present invention, the apparatus further comprises: and the zero gas inlet, the sampling pump and the standard gas inlet are sequentially arranged between the protection filter and the water blocking filter.
In a further preferred embodiment of the present invention, the membrane filter is disposed behind a sampling flue gas outlet composed of the sampling pump outlet and the standard gas inlet, so that the sampling flue gas before entering the water-blocking filter is dewatered and dehumidified by the membrane filter.
In a further preferred embodiment of the present invention, the flue gas is sent to the sampling pump together with the zero gas after passing through the protective filter.
In a preferred embodiment of the present invention, the peristaltic pump comprises two inlet pipes and one outlet pipe, and the two inlet pipes are respectively connected to the water outlet of the primary cold chamber and the water outlet of the secondary cold chamber.
In a preferred embodiment of the present invention, the apparatus further comprises: and the refrigerator is connected with the primary cold cavity and the secondary cold cavity.
In another aspect, the present invention further provides a flue gas monitoring system, which includes:
the smoke collector is used for collecting smoke to be tested;
the smoke analyzer is used for analyzing the substance components in the smoke to be tested; and
the water removal device for the flue gas monitoring system, which is arranged between the flue gas collector and the flue gas analyzer, is the water removal device for the flue gas monitoring system according to any one of claims 1 to 7.
In a preferred embodiment of the present invention, the system further comprises: the display device is used for displaying the substance components in the smoke to be tested, and the warning information generation device is used for sending warning information after the specific substance components in the smoke to be tested exceed a preset value.
In a preferred embodiment of the present invention, the flue gas monitoring system is applied to a thermal power plant, and the flue gas collector is used for receiving flue gas discharged from a coal burning boiler in the power plant.
By adopting the technical scheme provided by the utility model, the structural relation of the smoke extraction element is adjusted, and the smoke immediately enters the secondary cooling cavity after coming out of the primary cooling cavity, so that the cooled area of the smoke is increased; and a membrane filter is added between the protection filter and the water blocking filter, so that residual water vapor is further processed, the condition that the smoke entering the analyzer does not contain water is improved, the measurement accuracy and stability of the analyzer are improved, and the service life of the analyzer is prolonged.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure and/or process particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
Fig. 1 is a schematic view of an internal structure relationship of a multistage water removal device for a flue gas monitoring system according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of an internal configuration relationship of a flue gas monitoring system according to an embodiment of the present invention.
Reference numerals
110-primary cold chamber, 120-secondary cold chamber, 130-protective filter,
140-peristaltic pump, 150-zero gas inlet, 160-sampling pump,
170-standard gas inlet, 180-membrane filter, 190-water-blocking filter,
200-a flue gas monitoring system, 210-a flue gas collector, 220-a multistage dewatering device,
230-flue gas analyzer.
Detailed Description
The following detailed description of the embodiments of the present invention will be provided with reference to the drawings and examples, so that how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented. It should be noted that the detailed description is only for the purpose of making the utility model easier and clearer for those skilled in the art, and is not intended to be a limiting explanation of the utility model; moreover, as long as there is no conflict, the embodiments and the features of the embodiments of the present invention may be combined with each other, and the technical solutions formed are all within the scope of the present invention.
The technical scheme of the utility model is described in detail by the figures and the specific embodiments as follows:
examples
As shown in fig. 1, the present embodiment provides a water removal device for a flue gas monitoring system, which includes:
the first-stage cold cavity 110 and the second-stage cold cavity 120, wherein the second-stage cold cavity 120 is directly connected with the first-stage cold cavity 110, so that the flue gas enters the second-stage cold cavity 120 immediately after coming out of the first-stage cold cavity 110; the specific structures of the primary cooling chamber 110 and the secondary cooling chamber 120 are not limited in this embodiment, for example, the structures of the primary cooling chamber 110 and the secondary cooling chamber 120 may be the same or different;
a peristaltic pump 140 for discharging condensed water generated in the primary and secondary cold chambers 110 and 120; among other things, peristaltic pump 140 generally consists of three parts: a drive, a pump head and a hose; the fluid is isolated in the pump tube, and the peristaltic pump is like a hose filled with the fluid and is clamped by fingers, and the fluid in the tube moves forwards along with the forward sliding of the fingers; the peristaltic pump is also based on the principle that fingers are replaced by rollers, the elastic conveying hose of the pump is alternately squeezed and released to pump fluid, and as the hose is squeezed by two fingers, negative pressure is formed in the hose along with the movement of the fingers, and the fluid flows along with the hose.
In a preferred embodiment of this embodiment, the peristaltic pump 140 includes two inlet pipes and one outlet pipe, the two inlet pipes are respectively connected to the water outlet of the primary cold chamber and the water outlet of the secondary cold chamber, and the outlet pipe directly discharges the moisture collected by the peristaltic pump 140. Thus, the primary cooling chamber 110 and the secondary cooling chamber 120 can share one peristaltic pump 140, but the embodiment is not limited thereto, and one peristaltic pump 140 can be respectively disposed at the corresponding positions of the primary cooling chamber 110 and the secondary cooling chamber 120.
A protective filter 130 connected to the outlet of the secondary cooling chamber 120; in the embodiment, a special CEMS protection filter can be adopted, and the filter uses an extremely fine high-efficiency filter element to reliably separate solids contained in gas, particularly extremely fine solid particles; the filter adopts a standard component structure, and the filter head, the shell and the filter element have extremely high compatibility, so that the filter is simple and convenient to install and can meet various different requirements of an installation site; for example, the filter adopts a glass shell, and the pollution degree of the filter element can be directly observed from the outside; the gas does not react with the glass shell to generate chemical reaction, no tool is needed for replacing the filter element, and the installation of the O-shaped ring is in the optimal position; the universal type, the operation are reliable, and the maintenance is easy. More specifically, the sampling interface adopts PTFE NPT4/6mm, and the operating pressure (20 ℃) is Max.5bar.abs; the GL interface pressure of the adapter is 5bar abs; maximum capacity 65cm 3; filtering materials: ceramic filter elements and tetrafluoro filter elements.
The water blocking filter 190 is arranged to isolate moisture in the flue gas and send the flue gas after water removal to the flue gas analyzer; for example, a water-blocking filter with the model of SartoIab-P20 is adopted, the water-blocking filter is matched with a cellulose acetate sterilization filter membrane filter with the pore diameter of 0.22um, and the water-blocking filter is packaged in a sterile single bag, is suitable for sterilization filtration of a culture medium or a culture solution, and has the treatment capacity of 0.1L-5L; have the advantage that filter area is big to there is 8 exhaust holes of taking PTFE in the design of filter upper end, has the self-bleeding function in filtering process, avoids producing the air lock, and consequently the filter speed is very fast, and the filter has more installed glass fiber filtration membrane additional, can filter the viscous difficult liquid of straining, also can guarantee the high velocity of flow of ideal.
As shown in fig. 1, the water removal device for a smoke monitoring system provided in this embodiment further includes a membrane filter 180 disposed between the protection filter 130 and the water blocking filter 190, where the membrane filter 180 includes filter paper for absorbing water and removing moisture; the principle of water removal and dehumidification is as follows: water absorbing and dehumidifying filter paper is added into a plastic sealed barrel to achieve the purpose of further dewatering and dehumidifying; specific implementations include, but are not limited to, direct use of gol's membrane liquid filters.
By adopting the technical scheme provided by the embodiment, the structural relationship of the smoke extraction element is adjusted (especially the structural relationship between the secondary cooling cavity 120 and the primary cooling cavity 110 is improved), and the smoke enters the secondary cooling cavity 120 immediately after coming out of the primary cooling cavity 110, so that the cooling area of the smoke is increased; and a membrane filter 150 is added between the protective filter 130 and the water blocking filter 190 to further process residual water vapor, so that the smoke entering the analyzer does not contain water, the measurement accuracy and stability of the analyzer are improved, and the service life of the analyzer is prolonged.
It should be noted that the structure of the smoke extraction element in fig. 1 is only a schematic diagram corresponding to the smoke flow direction, and the structural relationship between the upper and lower positions of each element can be reasonably arranged by combining the actual engineering requirements; the present embodiment is not particularly limited thereto.
As shown in fig. 1, in the preferred embodiment of this embodiment, through holes are directly formed between the primary cooling chamber 110 and the secondary cooling chamber 120, or the primary cooling chamber and the secondary cooling chamber are directly connected through a pipeline with a diameter smaller than 10 mm.
Although the cold cavity of the refrigerator in the prior art is designed with double cavities, the main water removal process is completed when the cold cavity passes through the first cavity, and the water in the second cavity is basically not discharged; and the water trap that this embodiment provided improves the efficiency of second grade cavity dewatering, makes the refrigeration effect in cold chamber obtain very big promotion, and water content in the at utmost reduction flue gas improves the life of analysis appearance. And the pipeline between the first-stage dewatering and the second-stage dewatering is as short as possible after the first-stage dewatering comes out, so that the dewatering efficiency of the second-stage chamber can be improved more obviously.
As shown in fig. 1, in a preferred embodiment of this embodiment, the water removing device further includes: a zero gas inlet 150, a sampling pump 160 and a standard gas inlet 170 are sequentially arranged between the protective filter 130 and the water blocking filter 190.
In a further preferred embodiment, the membrane filter 180 is disposed behind the sampling flue gas outlet formed by the outlet of the sampling pump 160 and the standard gas inlet 150, so that the sampling flue gas before entering the water blocking filter 190 is subjected to water removal and dehumidification by the membrane filter 180. And the flue gas passes through the protective filter 130 and is sent to the sampling pump 160 together with the zero gas.
In a preferred embodiment of this embodiment, the water removing device further includes: a refrigerator (not shown) connected to the primary and secondary cold chambers 110 and 120; the number of the refrigerators can be 1, so that two cold chambers share one refrigerator, and 1 refrigerator can be respectively arranged at the two cold chambers.
As shown in fig. 2, the present embodiment further provides a flue gas monitoring system 200, where the flue gas monitoring system 200 includes:
a flue gas collector 210 for collecting flue gas to be tested;
a smoke analyzer 230 for analyzing the substance components in the smoke to be tested; and
the water removal device 220 for a flue gas monitoring system is arranged between the flue gas collector 210 and the flue gas analyzer 230, and the water removal device 220 for a flue gas monitoring system is the water removal device for a flue gas monitoring system mentioned in fig. 1 and the above embodiments.
In a preferred embodiment of this embodiment, the flue gas monitoring system 200 further includes: a display device (not shown), which may be a liquid crystal display, for displaying the content of each component in the flue gas analyzed by the flue gas analyzer 230; a warning information generating device (not shown) for sending warning information after the specific substance component in the smoke to be tested exceeds a predetermined value; for example, directly sending alarm information, or sending short message and email to the manager.
In a preferred embodiment of the present embodiment, the flue gas monitoring system 200 is applied to a thermal power plant, and the flue gas collector is used for receiving flue gas discharged from a coal fired boiler in the power plant.
By adopting the technical scheme provided by the embodiment, the structural relation of the smoke extraction element is adjusted, smoke enters the secondary cooling cavity immediately after coming out of the primary cooling cavity, and the cooled area of the smoke is increased; and a membrane filter is added between the protection filter and the water blocking filter, so that residual water vapor is further processed, the condition that the smoke entering the analyzer does not contain water is improved, the measurement accuracy and stability of the analyzer are improved, and the service life of the analyzer is prolonged.
Finally, it should be understood that the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Those skilled in the art can make many changes and simple substitutions to the technical solution of the present invention without departing from the technical solution of the present invention, and the technical solution of the present invention is protected by the following claims.
Claims (10)
1. The utility model provides a water trap for flue gas monitored control system which characterized in that includes:
the secondary cooling cavity is directly connected with the primary cooling cavity, so that the flue gas immediately enters the secondary cooling cavity after coming out of the primary cooling cavity;
the peristaltic pump is used for discharging condensed water generated in the primary cold cavity and the secondary cold cavity;
the protective filter is connected with the outlet of the secondary cooling cavity;
the water blocking filter is arranged to isolate the moisture in the flue gas and send the flue gas after water removal to a flue gas analyzer; and
and the membrane filter is arranged between the protection filter and the water blocking filter and comprises filter paper for absorbing water and removing humidity.
2. The device of claim 1, wherein the primary cooling chamber and the secondary cooling chamber are directly provided with through holes communicated with each other, or are directly connected through a pipeline with the diameter less than 10 mm.
3. The apparatus of claim 1, further comprising: and the zero gas inlet, the sampling pump and the standard gas inlet are sequentially arranged between the protection filter and the water blocking filter.
4. The apparatus of claim 3, wherein the membrane filter is disposed after a sampling flue gas outlet consisting of the sampling pump outlet and a marker gas inlet, so that the sampling flue gas before entering the water-blocking filter is dewatered and dehumidified by the membrane filter.
5. The apparatus of claim 3, wherein the flue gas is passed through the guard filter and then sent to the sample pump with the zero gas.
6. The device according to claim 1, characterized in that said peristaltic pump comprises two inlet ducts and one outlet duct, said two inlet ducts being connected respectively to the water outlet of said primary cold chamber and to the water outlet of said secondary cold chamber.
7. The apparatus of claim 1, further comprising: and the refrigerator is connected with the primary cold cavity and the secondary cold cavity.
8. A flue gas monitoring system, comprising:
the smoke collector is used for collecting smoke to be tested;
the smoke analyzer is used for analyzing the substance components in the smoke to be tested; and
the water removal device for the flue gas monitoring system, which is arranged between the flue gas collector and the flue gas analyzer, is the water removal device for the flue gas monitoring system according to any one of claims 1 to 7.
9. The system of claim 8, further comprising: the display device is used for displaying the substance components in the smoke to be tested, and the warning information generation device is used for sending warning information after the specific substance components in the smoke to be tested exceed a preset value.
10. The system of claim 8 or 9, wherein the flue gas monitoring system is applied to a thermal power plant, and the flue gas collector is configured to receive flue gas from a coal fired boiler in the power plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120324692.0U CN215727109U (en) | 2021-02-04 | 2021-02-04 | Water removal device for flue gas monitoring system and flue gas monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120324692.0U CN215727109U (en) | 2021-02-04 | 2021-02-04 | Water removal device for flue gas monitoring system and flue gas monitoring system |
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| Publication Number | Publication Date |
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| CN215727109U true CN215727109U (en) | 2022-02-01 |
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| CN202120324692.0U Expired - Fee Related CN215727109U (en) | 2021-02-04 | 2021-02-04 | Water removal device for flue gas monitoring system and flue gas monitoring system |
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| CN (1) | CN215727109U (en) |
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Granted publication date: 20220201 |