CN205665066U - Coal fired power plant SCR deNOx systems distributing type flue gas sampling device - Google Patents
Coal fired power plant SCR deNOx systems distributing type flue gas sampling device Download PDFInfo
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- CN205665066U CN205665066U CN201620548134.1U CN201620548134U CN205665066U CN 205665066 U CN205665066 U CN 205665066U CN 201620548134 U CN201620548134 U CN 201620548134U CN 205665066 U CN205665066 U CN 205665066U
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- sampling
- flue gas
- flue
- pipe
- power plant
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- 238000005070 sampling Methods 0.000 title claims abstract description 88
- 239000003546 flue gas Substances 0.000 title claims abstract description 54
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 108700018263 Brassica oleracea SCR Proteins 0.000 title abstract 3
- 239000003245 coal Substances 0.000 title abstract 3
- 239000000523 sample Substances 0.000 claims description 76
- 230000002000 scavenging effect Effects 0.000 claims description 20
- 230000003068 static effect Effects 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 235000019504 cigarettes Nutrition 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000000738 capillary electrophoresis-mass spectrometry Methods 0.000 abstract description 5
- 238000004868 gas analysis Methods 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 abstract description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 5
- 238000007405 data analysis Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 206010023232 Joint swelling Diseases 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a coal fired power plant SCR deNOx systems distributing type flue gas sampling device. Still, adopt single -point sample mode in the monitoring of coal fired power plant SCR deNOx systems CEMS data at present, hardly accurately react denitration export NOx's concentration value. The utility model discloses a sampling tube of female pipe of sample and many parallels, many sampling tubes insert and run through in the whole flue cross -section of SCR reactor outlet flue and be the interval level and arrange, many sampling tubes collect in the female pipe of sample, the interval sets up the sample connection that a plurality of openings orientation is unanimous with flue gas flow on the every sampling tube, the female pipe of sample connect to the sample platform through perpendicular decurrent flue gas pipeline, the other end of the platform of should taking a sample connects to air preheater exhaust pass through perpendicular decurrent flue gas pipeline. The utility model discloses ensure the flue gas analysis data and more can react the SCR exhaust pass cross -section condition, be close the actual effluent concentration of SCR export NOx more.
Description
Technical field
This utility model relates to SCR flue gas denitrification system, particularly one and applies in coal-burning power plant's SCR denitration system CEMS
The flue gas sampling device of data monitoring.
Background technology
Nitrogen oxides (NOx) it is one of main atmosphere pollution.In the face of increasingly serious Environmental Protection Situation, national policy pair
Electricity power enterprise NOxEmission request is more and more stricter.SCR technology be current most widely used general, mature and reliable, denitration efficiency is the highest
Gas denitrifying technology, the most most coal-fired plant flue gas denitrations all use this technology.
SCR denitration system needs NO in flue gas before and after denitrationxAnd O2Concentration measures, with monitor denitration efficiency and
Denitration exiting flue gas NOxWhether content can meet environment protection emission requirement.Environmental requirement these parameters are continuously monitored and
Carry out data record and storage, it is achieved the system of this function is referred to as denitration CEMS.Measure NOxAnd O2Time need in flue will
Flue gas analysis instrument is extracted and sent into flue gas out.
Large-sized Coal-fired Power group SCR reactor volume is relatively big, and exhaust pass has that cross-sectional area is big, flue-gas temperature is high, flue gas
Flow Field Distribution inequality and dust concentration high, factors above easily causes the NO of SCR reactor outletxConcentration is distributed not
All.
Remain in the monitoring and the comparison examination of environmental protection superintendent office of coal-burning power plant's SCR denitration system CEMS data at present
Using single-point sampling mode, the sampling mode of this single-point is difficult to reaction denitration outlet NO exactlyxConcentration value, it is impossible to accurately
The practical operation situation of ground reaction denitration device, while bringing puzzlement to power plant operations staff, is also the safety of unit equipment
Operation hides some dangers for.
Utility model content
Technical problem to be solved in the utility model is to overcome the sampling of current SCR denitration system CEMS flue gas single-point to cause
Problem, it is provided that a kind of coal-burning power plant distributed sampler of SCR denitration system, it is whole section of SCR reactor outlet flue
Being distributed multiple sample tap on face, it is thus achieved that the sampling flue gas on different cross section, sampling flue gas delivers to sample platform, it is ensured that flue gas analysis
Data more can react SCR exhaust pass cross section situation, is more nearly SCR and exports NOxActual discharge concentration.
To this end, this utility model realizes by the following technical solutions: a kind of coal-burning power plant distributed cigarette of SCR denitration system
Gas sampler, the probe tube parallel with many including sampling female pipe,
Many described probe tubes insert and through the whole flue cross section of SCR reactor outlet flue and in a water proof
Plain cloth is put, many described probe tubes come together in sampling mother pipe, on every probe tube interval arrange multiple opening towards with flue gas
Flow to consistent sample tap；
The female pipe of described sampling is connected to sample platform by flue vertically downward, and the other end of this sample platform leads to
Flue after vertically downward is connected to air preheater exhaust pass.
This utility model can obtain the sampling flue gas of multiple sample point, and the flue gas of each sample point samples manifold through many
Enter the female pipe of sampling after collection to be sufficiently mixed；On described sample platform, flue gas is carried out flue gas inspection and data analysis, draws
Sampling smoke components Concentration Testing value.Described sampling flue gas is by between SCR reactor outlet flue and air preheater exhaust pass
Pressure reduction or sampling blower fan provide power.
Further, described sample platform by the upper compressed air scavenging conduit set gradually from top to bottom, the 3rd stop valve,
Upper reduced pipe, sampling cell, lower reduced pipe, the 4th stop valve and compressed air scavenging conduit composition, described upper compressed air
Scavenging conduit is connected to sample on the flue that female Guan Yu tri-stop valve connects, and described compressed air scavenging conduit is connected to
On the flue that 4th stop valve is connected with air preheater exhaust pass.Carry out smoke sampling at sampling cell, then carry out cigarette
Gas detection and data analysis.3rd stop valve and the 4th stop valve are for controlling the flow of flue gas.
Further, the downward oblique cutting of sampling probe is arranged on sampling cell, this sampling probe and the folder of vertical pipe axis
Angle is 40-50 degree.This structure is arranged is easy to fast sampling.
Further, described sampling probe connects a flue gas analyzer by sampling pump.By flue gas analyzer to flue gas
Carry out detecting and data analysis.
Further, described upper compressed air scavenging conduit and compressed air scavenging conduit are equipped with stop valve, by cutting
Only valve controls compressed-air actuated flow.
Further, described sampling cell is made up of the pipeline of a diameter of 300-400mm and a length of 1500-2000mm,
The spacing of adjacent samples pipe is 2600-2800mm, and the spacing of adjacent samples mouth is 2000-2500mm.
Further, every probe tube imports and is provided with built-in static mixer, described static mixer at the female pipe of sampling
Including playpipe, this playpipe has multiple spray-hole.Sampling flue gas is made to mix in sampling mother's pipe by static mixer
The most abundant.
Further, described sampling mother's pipe has two, symmetrical layout, by three-way valve and flue gas vertically downward
Pipeline connects；Described sampling mother manages horizontally disposed outside SCR reactor outlet flue.
Further, on the flue vertically downward that described sampling mother's pipe is connected with sample platform, it is provided with the second stop valve
And type metal expansion joint；On the flue vertically downward that described sample platform is connected with air preheater exhaust pass, it is provided with the 5th
Stop valve and type metal expansion joint or sampling blower fan.
Further, described probe tube carries out dual face seals weldering near one end of the female pipe of sampling with SCR reactor outlet flue,
The other end is can the free end of free wxpansion vertically；The port Plate Welding of free end blocks, the lower weld of free end
Abrasionproof parallels；Probe tube is provided with the suspension and support for holding in the palm abrasionproof parallels in flue, and the top of probe tube is welded with abrasionproof angle steel, takes
Sample pipe is horizontal by 3-5 degree angle, and slope aspect sampling mother's pipe, probe tube is provided with the first stop valve.
This utility model have the advantages that can be uniformly distributed on the whole cross section of SCR reactor outlet flue many
Individual sample point, the sampled female pipe of flue gas of each sample point delivers to sample platform after being sufficiently mixed, sampled by sampling probe
Pumping is drawn to flue gas analyzer and carries out flue gas inspection and data analysis, it is ensured that flue gas analysis data more can be reacted SCR and be exported cigarette
Cross section, road situation, is more nearly SCR and exports NOxActual discharge concentration.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the distribution schematic diagram of this utility model sample tap.
Fig. 3 is the A direction view (B in figure represents flue gas flow direction) of Fig. 2.
Fig. 4 is the structural representation at this utility model static mixer.
Fig. 5 is the structural representation of this utility model probe tube.
Fig. 6 is the lateral view (B in figure represents flue gas flow direction) of probe tube in Fig. 5.
In figure: 1-SCR reactor outlet flue, 2-probe tube, 3-sample tap, 4-sampling mother's pipe, 5-static mixer, 6-
First stop valve, 7-the second stop valve, 8-type metal expansion joint, 9-sample platform, 10-upper compressed air scavenging conduit, 11-the 3rd section
Only valve, the upper reduced pipe of 12-, 13-samples cell, reduced pipe under 14-, 15-the 4th stop valve, 16-compressed air scavenging conduit,
17-sampling pump, 18-flue gas analyzer, 19-samples blower fan, 20-air preheater exhaust pass, 21-sampling probe, and 22-the 5th ends
Valve, 23-abrasionproof parallels, 24-suspension and support, 25-abrasionproof angle steel.
Detailed description of the invention
A preferred forms of the present utility model is given below in conjunction with Figure of description.
The coal-burning power plant as depicted distributed flue gas sampling device of SCR denitration system, many probe tubes 2 insert and run through
Arranging in the whole flue cross section of SCR reactor outlet flue 1 and in spaced horizontal, many described probe tubes 2 come together in two
Sampling mother's pipe 4 of the symmetrical layout of root, on every probe tube 2, interval arranges multiple opening towards consistent with flue gas flow direction
Sample tap 3, described sample tap is the short tube of diameter 38mm, length 80mm.The female pipe 4 of left and right side two sampling passes through three-way valve
It is connected with flue vertically downward；The female pipe 4 of sampling is horizontally disposed outside SCR reactor outlet flue 1.Every probe tube
Importing and be provided with built-in static mixer 5 at the female pipe of sampling, described static mixer 5 is playpipe, and this playpipe has
Multiple spray-holes.
The female pipe 4 of described sampling is connected to sample platform 9 by flue vertically downward, another of this sample platform 9
End is connected to air preheater exhaust pass 20 by flue vertically downward.Sample platform 9 is upper by set gradually from top to bottom
Compressed air scavenging conduit the 10, the 3rd stop valve 11, upper reduced pipe 12, sampling cell 13, lower reduced pipe the 14, the 4th stop valve 15 and
Compressed air scavenging conduit 16 forms, and upper compressed air scavenging conduit 10 is connected to sample what female pipe 4 was connected with the 3rd stop valve 11
On flue, compressed air scavenging conduit 16 is connected to the fume pipe that the 4th stop valve 15 is connected with air preheater exhaust pass 20
On road.The downward oblique cutting of sampling probe 21 is arranged on sampling cell 13, and this sampling probe 21 with the angle of vertical pipe axis is
40-50 degree.Sampling probe 21 connects flue gas analyzer 18 by sampling pump 17.Described upper compressed air scavenging conduit 10 and under press
It is equipped with stop valve on contracting air scavenging conduit 16.Sampling cell 13 is by a diameter of 300-400mm's and a length of 1500-2000mm
Pipeline forms, and the spacing of adjacent samples pipe is 2600-2800mm, and the spacing of adjacent samples mouth is 2000-2500mm.
On the flue vertically downward that the female pipe 4 of sampling is connected with sample platform 9, it is provided with the second stop valve 7 and metal is swollen
Swollen joint 8；On the flue vertically downward that sample platform 9 is connected with air preheater exhaust pass 20, be provided with the 5th stop valve 22,
Type metal expansion joint or sampling blower fan 19.
Probe tube 2 carries out dual face seals weldering near one end of the female pipe 4 of sampling with SCR reactor outlet flue 1, and the other end is
Can the free end of free wxpansion vertically；The port Plate Welding of free end blocks, the lower weld abrasionproof parallels of free end
23.Probe tube 2 is provided with the suspension and support 24 for holding in the palm abrasionproof parallels 23 in flue, and the top of probe tube 2 is welded with abrasionproof angle steel 25,
Probe tube 2 is horizontal by 3-5 degree angle, and the female pipe 4 of slope aspect sampling, probe tube 2 is provided with the first stop valve 6.
Although as it has been described above, represented and have expressed this utility model with reference to specific preferred embodiments, but it must not
It is construed to the restriction to this utility model self.In the spirit and scope of the present utility model defined without departing from claims
Under premise, can various changes can be made in the form and details to it.
Claims (10)
1. the distributed flue gas sampling device of coal-burning power plant's SCR denitration system, including sampling (4) take parallel with many of female pipe
Sample pipe (2), it is characterised in that
Many described probe tubes (2) are inserted and through the whole flue cross section of SCR reactor outlet flue (1) and in interval
Horizontally disposed, many described probe tubes (2) come together in sampling mother's pipe (4), and the every upper interval of probe tube (2) arranges multiple opening
Towards the sample tap (3) consistent with flue gas flow direction；
Described sampling mother pipe (4) is connected to sample platform (9) by flue vertically downward, this sample platform (9) another
One end is connected to air preheater exhaust pass (20) by flue vertically downward.
The coal-burning power plant the most according to claim 1 distributed flue gas sampling device of SCR denitration system, it is characterised in that institute
The sample platform (9) stated is by the upper compressed air scavenging conduit (10) set gradually from top to bottom, the 3rd stop valve (11), upper reducing
Pipe (12), sampling cell (13), lower reduced pipe (14), the 4th stop valve (15) and compressed air scavenging conduit (16) composition,
Described upper compressed air scavenging conduit (10) is connected to sample the flue that female pipe (4) is connected with the 3rd stop valve (11)
On, described compressed air scavenging conduit (16) is connected to the cigarette that the 4th stop valve (15) is connected with air preheater exhaust pass (20)
In feed channel.
The coal-burning power plant the most according to claim 2 distributed flue gas sampling device of SCR denitration system, it is characterised in that one
Sampling probe (21) oblique cutting downwards is arranged in sampling cell (13), and this sampling probe (21) with the angle of vertical pipe axis is
40-50 degree.
The coal-burning power plant the most according to claim 3 distributed flue gas sampling device of SCR denitration system, it is characterised in that institute
The sampling probe (21) stated connects a flue gas analyzer (18) by sampling pump (17).
The coal-burning power plant the most according to claim 2 distributed flue gas sampling device of SCR denitration system, it is characterised in that institute
It is equipped with stop valve on the upper compressed air scavenging conduit (10) stated and compressed air scavenging conduit (16).
The coal-burning power plant the most according to claim 2 distributed flue gas sampling device of SCR denitration system, it is characterised in that institute
The sampling cell (13) stated is made up of the pipeline of a diameter of 300-400mm and a length of 1500-2000mm, between adjacent samples pipe
Away from for 2600-2800mm, the spacing of adjacent samples mouth is 2000-2500mm.
7. according to the distributed flue gas sampling device of coal-burning power plant's SCR denitration system described in any one of claim 1-4, its feature
Being, every probe tube imports and is provided with built-in static mixer (5) at the female pipe of sampling, and described static mixer (5) includes
Playpipe, this playpipe has multiple spray-hole.
8. according to the distributed flue gas sampling device of coal-burning power plant's SCR denitration system described in any one of claim 1-4, its feature
Being, described sampling mother pipe (4) has two, symmetrical layout, by three-way valve with flue vertically downward even
Connect；Described sampling mother pipe (4) is horizontally disposed in SCR reactor outlet flue (1) outside.
9. according to the distributed flue gas sampling device of coal-burning power plant's SCR denitration system described in any one of claim 1-4, its feature
Be, on described sampling mother's pipe (4) flue vertically downward of being connected with sample platform (9), be provided with the second stop valve (7) and
Type metal expansion joint (8)；On the flue vertically downward that described sample platform (9) is connected with air preheater exhaust pass (20),
It is provided with the 5th stop valve (22), type metal expansion joint and/or sampling blower fan (19).
10., according to the distributed flue gas sampling device of coal-burning power plant's SCR denitration system described in any one of claim 1-4, it is special
Levy and be,
Described probe tube (2) carries out dual face seals weldering, separately near one end of sampling mother's pipe (4) with SCR reactor outlet flue (1)
One end is can the free end of free wxpansion vertically；The port Plate Welding of free end blocks, and the lower weld of free end is prevented
Mill parallels (23)；Probe tube (2) is provided with the suspension and support (24) for holding in the palm abrasionproof parallels (23) in flue, probe tube (2) upper
Portion is welded with abrasionproof angle steel (25), and probe tube (2) is horizontal by 3-5 degree angle, and slope aspect sampling mother's pipe (4), probe tube sets on (2)
There is the first stop valve (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620548134.1U CN205665066U (en) | 2016-06-07 | 2016-06-07 | Coal fired power plant SCR deNOx systems distributing type flue gas sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620548134.1U CN205665066U (en) | 2016-06-07 | 2016-06-07 | Coal fired power plant SCR deNOx systems distributing type flue gas sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205665066U true CN205665066U (en) | 2016-10-26 |
Family
ID=57156601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620548134.1U Expired - Fee Related CN205665066U (en) | 2016-06-07 | 2016-06-07 | Coal fired power plant SCR deNOx systems distributing type flue gas sampling device |
Country Status (1)
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| CN (1) | CN205665066U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596208A (en) * | 2017-02-13 | 2017-04-26 | 谢文生 | Flue gas sampling device and flow field diagnosis method |
| CN106596867A (en) * | 2017-01-19 | 2017-04-26 | 国电科学技术研究院 | SCR outlet flue cross section nitric oxide and oxygen concentration online monitoring method and system |
| CN108827724A (en) * | 2018-06-21 | 2018-11-16 | 华能国际电力股份有限公司 | A kind of big section flue SCR-CEMS flue gas multiple spot mixed in equal amounts second level injection quick sampling devices and methods therefor |
| CN109647184A (en) * | 2018-12-10 | 2019-04-19 | 广东电网有限责任公司 | A kind of coal-burning power plant's denitrating system |
| CN109696333A (en) * | 2018-04-28 | 2019-04-30 | 中电华创电力技术研究有限公司 | A kind of built-in flue gas sampling device suitable for SCR denitration system |
| CN109991048A (en) * | 2019-04-30 | 2019-07-09 | 国电科学技术研究院有限公司 | Flue gas automatic monitored control system and its sampler, denitrating system |
| CN110132663A (en) * | 2019-04-29 | 2019-08-16 | 国网浙江省电力有限公司电力科学研究院 | A kind of smoke sampling auxiliary device suitable for high temperature positive flue |
| CN110823652A (en) * | 2019-12-13 | 2020-02-21 | 重庆威巴仪器有限责任公司 | Differential pressure type self-backflow multipoint uniform flue gas sampling system |
| CN110887709A (en) * | 2019-12-04 | 2020-03-17 | 华能罗源发电有限责任公司 | Self-suction CEMS multi-point flue gas sampling device and control method |
| CN110987544A (en) * | 2019-12-10 | 2020-04-10 | 国网山西省电力公司电力科学研究院 | Single-pipe type multipoint heat-engine plant rectangular flue gas sampling device and sampling method |
| CN111006915A (en) * | 2019-12-12 | 2020-04-14 | 江苏优尔孚机电技术有限公司 | Grid partition sampling structure of large-section flue |
| CN113484103A (en) * | 2021-07-16 | 2021-10-08 | 南京龙源环保有限公司 | Flue gas collecting device for SCR concentration field measurement |
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2016
- 2016-06-07 CN CN201620548134.1U patent/CN205665066U/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596867A (en) * | 2017-01-19 | 2017-04-26 | 国电科学技术研究院 | SCR outlet flue cross section nitric oxide and oxygen concentration online monitoring method and system |
| CN106596208A (en) * | 2017-02-13 | 2017-04-26 | 谢文生 | Flue gas sampling device and flow field diagnosis method |
| CN106596208B (en) * | 2017-02-13 | 2023-11-28 | 谢文生 | Flue gas sampling device and flow field diagnosis method |
| CN109696333A (en) * | 2018-04-28 | 2019-04-30 | 中电华创电力技术研究有限公司 | A kind of built-in flue gas sampling device suitable for SCR denitration system |
| CN109696333B (en) * | 2018-04-28 | 2024-03-19 | 中电华创电力技术研究有限公司 | Built-in flue gas sampling device suitable for SCR denitration system |
| CN108827724A (en) * | 2018-06-21 | 2018-11-16 | 华能国际电力股份有限公司 | A kind of big section flue SCR-CEMS flue gas multiple spot mixed in equal amounts second level injection quick sampling devices and methods therefor |
| CN108827724B (en) * | 2018-06-21 | 2024-01-26 | 华能国际电力股份有限公司 | Sampling method of flue gas multipoint equivalent mixing two-stage injection rapid sampling device |
| CN109647184A (en) * | 2018-12-10 | 2019-04-19 | 广东电网有限责任公司 | A kind of coal-burning power plant's denitrating system |
| CN110132663A (en) * | 2019-04-29 | 2019-08-16 | 国网浙江省电力有限公司电力科学研究院 | A kind of smoke sampling auxiliary device suitable for high temperature positive flue |
| CN110132663B (en) * | 2019-04-29 | 2024-02-09 | 国网浙江省电力有限公司电力科学研究院 | Flue gas sampling auxiliary device suitable for high Wen Zhengya flue |
| CN109991048A (en) * | 2019-04-30 | 2019-07-09 | 国电科学技术研究院有限公司 | Flue gas automatic monitored control system and its sampler, denitrating system |
| CN110887709A (en) * | 2019-12-04 | 2020-03-17 | 华能罗源发电有限责任公司 | Self-suction CEMS multi-point flue gas sampling device and control method |
| CN110987544A (en) * | 2019-12-10 | 2020-04-10 | 国网山西省电力公司电力科学研究院 | Single-pipe type multipoint heat-engine plant rectangular flue gas sampling device and sampling method |
| CN111006915A (en) * | 2019-12-12 | 2020-04-14 | 江苏优尔孚机电技术有限公司 | Grid partition sampling structure of large-section flue |
| CN110823652A (en) * | 2019-12-13 | 2020-02-21 | 重庆威巴仪器有限责任公司 | Differential pressure type self-backflow multipoint uniform flue gas sampling system |
| CN113484103A (en) * | 2021-07-16 | 2021-10-08 | 南京龙源环保有限公司 | Flue gas collecting device for SCR concentration field measurement |
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