CN208902484U - The boiler system of boiler export flue gas sampling device and thermal power plant - Google Patents
The boiler system of boiler export flue gas sampling device and thermal power plant Download PDFInfo
- Publication number
- CN208902484U CN208902484U CN201821142663.7U CN201821142663U CN208902484U CN 208902484 U CN208902484 U CN 208902484U CN 201821142663 U CN201821142663 U CN 201821142663U CN 208902484 U CN208902484 U CN 208902484U
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- Prior art keywords
- boiler
- probe
- flue gas
- export flue
- sampling device
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- 238000005070 sampling Methods 0.000 title claims abstract description 74
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000003546 flue gas Substances 0.000 title claims abstract description 45
- 239000000523 sample Substances 0.000 claims abstract description 89
- 238000012360 testing method Methods 0.000 claims abstract description 36
- 238000000738 capillary electrophoresis-mass spectrometry Methods 0.000 claims abstract description 15
- 238000009434 installation Methods 0.000 claims abstract description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 46
- 229910021529 ammonia Inorganic materials 0.000 claims description 23
- 230000002000 scavenging effect Effects 0.000 claims description 17
- 238000005452 bending Methods 0.000 claims description 10
- 238000010926 purge Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 16
- 239000007789 gas Substances 0.000 abstract description 8
- 238000013459 approach Methods 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 239000003245 coal Substances 0.000 abstract description 3
- 239000003517 fume Substances 0.000 abstract description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 18
- 230000000694 effects Effects 0.000 description 9
- 238000005259 measurement Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model relates to coal fired thermal power plant denitrating system fields, disclose the boiler system of a kind of boiler export flue gas sampling device and thermal power plant, the boiler export flue gas sampling device includes sampling portion and test section, test section includes the CEMS probe installation part for installing CEMS probe, the first end of test section is connected to sampling portion by the first connection main pipe, second end is connected to electrical dust collector device gas approach by the second connection main pipe, wherein, sampling portion includes manifold and the spaced more probe tubes of length direction along manifold, the first end of more probe tubes is connected to manifold, second end stretches in boiler export flue, every stretching to for probe tube includes multiple sampling holes on the part in the boiler export flue.The boiler export flue gas sampling device can obtain representative fume sample, so that CEMS probe be made to obtain accurately and reliably testing result, meet environmental requirement with the emission for preferably cooperating out of stock device to make boiler system.
Description
Technical field
The utility model relates to coal fired thermal power plant denitrating system field more particularly to a kind of boiler export flue gas sampling devices
With the boiler system of thermal power plant.
Background technique
With the raising of environmental requirement, environmental protection administration reduces pollutant emission to thermal power plant, and more stringent requirements are proposed, example
Such as, to prevent the nitrogen oxides pollution environment generated after coal combustion in power plant boiler, it is desirable that denitrification apparatus is configured to boiler, with
Denitration process is carried out to the tail gas of discharge.In general, the exhaust pass in boiler is provided with denitrification apparatus, and denitrification apparatus needs cigarette
Gas sampler cooperates to carry out smoke sampling and examine sampling flue gas by CEMS (flue gas automatic monitored control system) probe
It surveys, to grasp the denitration situation of denitrification apparatus, the emission of boiler system is made to meet environmental protection standard.For general boiler system
For, the boiler export flue portion that can be sampled for flue gas sampling device is relatively short, and flue gas mixes after catalyst reaction
It closes unevenly, and existing flue gas sampling device mostly uses single-point to sample, and nitrogen oxides in denitrification apparatus caudal flue is caused to take
Sample is more difficult, and measurement result inaccuracy.
Utility model content
It is described the purpose of the utility model is to provide the boiler system of a kind of boiler export flue gas sampling device and thermal power plant
Boiler export flue gas sampling device can obtain representative fume sample, so that it is accurate and reliable to obtain CEMS probe
Testing result, environmental requirement is met with the emission for preferably cooperating out of stock device to make boiler system.
To achieve the goals above, on the one hand the utility model provides a kind of boiler export flue gas sampling device, the boiler
Exiting flue gas sampler includes sampling portion and test section, and the test section includes the CEMS probe peace for installing CEMS probe
The first end of piece installing, the test section is connected to the sampling portion by the first connection main pipe, and second end is female by the second connection
Pipe is connected to electrical dust collector device gas approach, wherein the sampling portion includes manifold and the length along the manifold
The spaced more probe tubes in direction, the first end of the more probe tubes is connected to the manifold, second end protrudes into
It include multiple take on the part of the every probe tube stretched in the boiler export flue into boiler export flue
Sample hole.
In the above-mentioned technical solutions, due to, with the pressure difference in boiler export flue, being utilized in electrical dust collector device gas approach
Negative pressure improves the flue gas flow rate flowed through in flue gas sampling device, to guarantee nitrogen oxides measurement effect, and is taken by design
The structure in sample portion is realized in boiler export flue by multiple sampling holes on more probe tubes and each probe tube
Multidraw, the flue gas finally obtained through multiple sample points, which is flowed in manifold, carries out abundant confluence uniformly, subsequently into
Test section eventually arrives at CEMS probe and is detected, and the accurate reliability of nitrogen oxides measurement result is effectively ensured.
Preferably, the sampling hole is located at the one of the air flow direction in the boiler export flue of the probe tube
Side.
Preferably, it is to beat that the other end of the probe tube, which includes the end of the bending segment bent downward and the bending segment,
It opens.
Preferably, it is provided with the first shut-off valve at the first end of each probe tube, and the manifold
Two ends all have opening and are provided with the second shut-off valve close to the opening.
Preferably, the first shut-off valve is provided at the first end of each probe tube, and the sampling portion is also wrapped
Scavenging conduit is included, which is connected to the second end of the multiple probe tube, and the both ends of the scavenging conduit are each formed with opening simultaneously
And third shut-off valve is wherein provided at one end.
Preferably, the scavenging conduit is straight tube and is set as in perpendicular being inclined, wherein one end height
In other end.
Preferably, the test section further includes the escaping of ammonia probe installation part for installing the escaping of ammonia probe, and the ammonia is escaped
Ease probe installation part includes the escaping of ammonia probe installing pipe and pops one's head in positioned at the escaping of ammonia to install the mounting flange of tube end, described
The escaping of ammonia probe installing pipe be located at the upside of the test section and with airflow direction in the test section in obtuse angle.
Preferably, the test section has larger diameter relative to the first connection main pipe and the second connection main pipe.
On the other hand the utility model provides a kind of boiler system of thermal power plant, the boiler system of the thermal power plant includes
Boiler export flue gas sampling device according to the present utility model.
Preferably, the boiler system of the thermal power plant includes the denitrification apparatus being set on the boiler export flue,
The boiler export flue gas sampling device is provided on rear side of the denitrification apparatus.
More acurrate reliable detection can be obtained by using boiler export flue gas sampling device according to the present utility model
As a result, to cooperate denitrification apparatus to obtain better denitration effect, to mitigate the pollution level of boiler system emission.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the boiler export flue gas sampling device of embodiment according to the present utility model,
Wherein part shut-off valve is omitted in sampling portion；
Fig. 2 is the schematic diagram of the sampling tube portion of the boiler export flue gas sampling device in Fig. 1, is shown for blowing
Clear away the shut-off valve used when ash work；
Fig. 3 is the schematic diagram of the sampling tube portion of another embodiment according to the present utility model, wherein remittance is omitted
Main pipe is flowed, the sampling tube portion shown in Fig. 3, can also also as a kind of replacement embodiment shown in Figure 2 for sampling tube portion
For being used in combination with the test section in boiler export device shown in Fig. 1.
Description of symbols
1 sampling portion, 11 probe tube
12 sampling hole, 13 manifold
14 first shut-off valve, 15 second shut-off valve
16 scavenging conduit, 17 third shut-off valve
2 test section, 21 CEMS probe installation part
22 the escaping of ammonia probe installation part
3 first connection main pipes
4 second connection main pipes
5 electrical dust collector device gas approach
6 boiler export flues
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein
Described specific embodiment is only used for describing and explaining the present invention, and is not intended to limit the utility model.
In the present invention, it is to be understood that the orientation or position of the instructions such as term " longitudinal direction ", " direction ", " deviating from "
Setting relationship is to be based on the orientation or positional relationship shown in the drawings, also corresponding with the orientation or positional relationship of actual use；It uses
The noun of locality such as " upper and lower, left and right " typically refer to reference to upper and lower, left and right shown in the drawings；" inside and outside " refers to relative to each
The profile of component itself it is inside and outside；It is merely for convenience of describing the present invention and simplifying the description, rather than indicates signified dress
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model
Limitation.
One side according to the present utility model provides a kind of boiler export flue gas sampling device, the boiler export flue gas
Sampler includes sampling portion 1 and test section 2, and the test section 2 includes the CEMS probe installation part for installing CEMS probe
21, the first end of the test section 2 is connected to the sampling portion 1 by the first connection main pipe 3, and second end is female by the second connection
Pipe 4 is connected to electrical dust collector device gas approach 5, wherein the sampling portion 1 is including manifold 13 and along the manifold 13
The spaced more probe tubes 11 of length direction, the first end of the more probe tubes 11 is connected to the manifold
13, second end stretches in boiler export flue 6, and every probe tube 11 stretches in the boiler export flue 6
It include multiple sampling holes 12 on part.
In the above-mentioned technical solutions, due in electrical dust collector device gas approach 5 with the pressure difference in boiler export flue 6, benefit
The flue gas flow rate flowed through in flue gas sampling device is improved with negative pressure, to guarantee nitrogen oxides measurement effect, and passes through design
The structure in sampling portion 1 is gone out to realize in boiler by multiple sampling holes 12 on more probe tubes 11 and each probe tube 11
Multidraw in mouth flue 6, the flue gas finally obtained through multiple sample points, which is flowed in manifold 13, sufficiently to be converged
Uniformly, it eventually arrives at CEMS probe subsequently into test section 2 to be detected, the accurate of nitrogen oxides measurement result is effectively ensured can
By property.
Preferably, the sampling hole 12 is located at the air-flow stream in the boiler export flue 6 of the probe tube 11
To side, flying dust etc. can be effectively reduced in flue gas in this way and block sampling hole 12.
Slotted-angle shelving and anchor ear etc. can be used in flue and be fixed for probe tube 11, the outer wall of probe tube 11 and flue and
Inner wall can carry out two-sided welding.
Referring to Fig. 1 and Fig. 2, it is shown that the first embodiment in sampling portion 1, the first end of each probe tube 11
Place is provided with the first shut-off valve 14, and two ends of the manifold 13 all have opening and close to the opening
It is provided with the second shut-off valve 15, it, can be when needed to confluence by the cooperation of the first shut-off valve 14 and the second shut-off valve 15
Main pipe 13 and each probe tube 11 carry out purging deashing work, help that the flying dust accumulated in sampling portion 1 is discharged, guarantee sampling portion
The smoothness of 1 each pipeline, in this embodiment, manifold 13 also functions as the effect of scavenging conduit, specifically, example
Such as, each first shut-off valve 14 can be closed, the second shut-off valve 15 of two ends of manifold 13 is opened, from manifold
13 side is passed through compressed air, and compressed air flows through entire manifold 13 and is discharged from the other end of manifold 13
To the external world, work to realize the purging deashing of 13 ontology of manifold, in another example, the one of manifold 13 can be opened
The first shut-off valve 14 on second shut-off valve 15 of a end and a probe tube 11, and close each other first shut-off valves
14 and second shut-off valve 15, manifold 13 one end close from the second open shut-off valve 15 be passed through compressed air, compress
Air is primarily entered in the probe tube 11 that the first shut-off valve 14 is opened after flowing through manifold 13 and is taken from each of probe tube 11
Sample hole 12 be discharged, thus realize to the first shut-off valve 14 open probe tube 11 purging deashing work, also, for obtain compared with
Good purging effect preferably only opens and needs the first shut-off valve 14 of the probe tube 11 purged and close other first shut-off valves
14。
In this embodiment, it is preferable that the second end of the probe tube 11 includes the bending segment bent downward and institute
The outboard end for stating bending segment is to open, in this way, the end (outside away from the manifold 13 of the bending segment
End) it opens using as an ash port, and by setting bending segment, under normal circumstances, flying dust is easy through bending segment through weight
Power falls, and can equally effectively reduce flying dust etc. in flue gas and block the probe tube, and is clear purge to probe tube 11
When ash work, flying dust can be promoted from bending segment fallen downward, the flying dust to fly out is prevented to be back at sampling hole 12.
Referring to Fig. 3, it is shown that second of embodiment in sampling portion 1 is all provided at the first end of each probe tube 11
It is equipped with the first shut-off valve 14, and the sampling portion 1 further includes scavenging conduit 16, which is connected to the multiple probe tube
11 second end, the both ends of the scavenging conduit 16, which are each formed with, to be open and is wherein provided with third shut-off valve 17 at one end, then
In this case, it is especially provided with scavenging conduit 16, for example, the on third shut-off valve 17 and a probe tube 11 can be opened
One shut-off valve 14, and each other first shut-off valves 14 are closed, it is passed through compressed air from the ventilation end of scavenging conduit 16, compression is empty
Air-flow enters through scavenging conduit 16 in the probe tube 11 that first shut-off valve 14 is opened and from 12 row of each sampling hole of probe tube 11
Out, to realize the purging deashing work for the probe tube 11 opened to the first shut-off valve 14, also, to obtain preferable purging
Effect preferably only opens and needs the first shut-off valve 14 of the probe tube 11 purged and close other first shut-off valves 14.
It is further preferred that the scavenging conduit 16 be straight tube and be set as be in perpendicular it is inclined, it is described its
Middle one end is higher than other end, in this way, flying dust is easy to be deposited in scavenging conduit 16 during smoke sampling, and the flying dust deposited
It is eventually deposited at the lower one end of scavenging conduit 16 along scavenging conduit 16 under the effect of gravity, it can be at described lower one end
Valve is set, to open releasing flying dust when needed, to be conducive to keep the unimpeded of each probe tube 11.
In addition, in this embodiment, two ends that may be set to be the manifold 13 all have opening
And an opening is provided with the second shut-off valve 15, with the purging for manifold 13.
For test section 2, it is preferable that the test section 2 can also include visiting for installing the escaping of ammonia of the escaping of ammonia probe
Head installation part 22, the escaping of ammonia probe installation part 22 is including the escaping of ammonia probe installing pipe and is located at the escaping of ammonia probe peace
The mounting flange of tubulature end, the escaping of ammonia probe installing pipe be located at the upside of the test section 2 and with the test section 2
Middle airflow direction is in obtuse angle.By the way that the upside of the test section 2 is arranged in the escaping of ammonia probe installing pipe and is set as
With airflow direction in test section 2 at obtuse angle, it is possible to prevente effectively from the flying dust in flue gas enters the escaping of ammonia spy when through test section 2
Head installing pipe then reaches the escaping of ammonia probe, to impact to the escaping of ammonia probe.
And preferably, the test section 2 has larger relative to the first connection main pipe 3 and the second connection main pipe 4
Diameter facilitates CEMS probe and more accurately obtains testing result so that flue gas stops the longer time in test section 2.
Another aspect according to the present utility model provides a kind of boiler system of thermal power plant, the boiler of the thermal power plant
System includes boiler export flue gas sampling device according to the present utility model, to be gone out by using boiler according to the present utility model
Mouth flue gas sampling device obtains more acurrate reliable testing result, so that denitrification apparatus is cooperated to obtain better denitration effect, with
Mitigate the pollution level of boiler system emission.
Preferably, the boiler system of the thermal power plant includes the denitrification apparatus being set on the boiler export flue 6,
The boiler export flue gas sampling device is provided on rear side of the denitrification apparatus, by carrying out smoke sampling on rear side of denitrification apparatus
And detect, preferably cooperation denitrification apparatus obtains better denitration effect.
Preferred embodiments of the present invention, still, the utility model and unlimited are described in detail in conjunction with attached drawing above
In this.In the range of the technology design of the utility model, a variety of simple variants can be carried out to the technical solution of the utility model,
It is combined in any suitable manner including each particular technique feature, in order to avoid unnecessary repetition, the utility model
To various combinations of possible ways, no further explanation will be given.But these simple variants and combination equally should be considered as the utility model institute
Disclosure belongs to the protection scope of the utility model.
Claims (10)
1. a kind of boiler export flue gas sampling device, which includes sampling portion (1) and test section
(2), the test section (2) includes popping one's head in installation part (21) for installing the CEMS of CEMS probe, and the first of the test section (2)
End is connected to the sampling portion (1) by the first connection main pipe (3), and second end is connected to electricity by the second connection main pipe (4) and removes
Dirt device portal flue (5), which is characterized in that the sampling portion (1) includes manifold (13) and along the manifold
(13) the spaced more probe tubes (11) of length direction, the first end of the more probe tubes (11) are connected to the remittance
Stream main pipe (13), second end stretch in boiler export flue (6), and the boiler that stretches to of the every probe tube (11) goes out
Include on part in mouth flue (6) multiple sampling holes (12).
2. boiler export flue gas sampling device according to claim 1, which is characterized in that the sampling hole (12) is located at institute
State the side of the air flow direction in the boiler export flue (6) of probe tube (11).
3. boiler export flue gas sampling device according to claim 1, which is characterized in that the second of the probe tube (11)
End includes that the end of the bending segment and the bending segment that bend downward is to open.
4. boiler export flue gas sampling device described in any one of -3 according to claim 1, which is characterized in that each described
It is provided at the first end of probe tube (11) the first shut-off valve (14), and two ends of the manifold (13) have
There is opening and is provided with the second shut-off valve (15) close to the opening.
5. boiler export flue gas sampling device according to claim 1 or 2, which is characterized in that each probe tube
(11) it is provided at first end the first shut-off valve (14), and the sampling portion (1) further includes scavenging conduit (16), the purging
Pipe (16) is connected to the second ends of the multiple probe tube (11), the both ends of the scavenging conduit (16) be each formed with opening and its
Third shut-off valve (17) are provided at middle one end.
6. boiler export flue gas sampling device according to claim 5, which is characterized in that the scavenging conduit (16) is straight tube
And it is set as in perpendicular being inclined, described wherein one end is higher than other end.
7. boiler export flue gas sampling device described in any one of -3 according to claim 1, which is characterized in that the detection
Portion (2) further includes the escaping of ammonia probe installation part (22) for installing the escaping of ammonia probe, and the escaping of ammonia pops one's head in installation part (22)
It pops one's head in including the escaping of ammonia probe installing pipe and positioned at the escaping of ammonia and the mounting flange of tube end is installed, the escaping of ammonia probe peace
Tubulature be located at the upside of the test section (2) and with airflow direction in the test section (2) in obtuse angle.
8. boiler export flue gas sampling device according to claim 1, which is characterized in that the test section (2) relative to
First connection main pipe (3) and the second connection main pipe (4) have larger diameter.
9. a kind of boiler system of thermal power plant, which is characterized in that the boiler system of the thermal power plant includes according to claim 1-8
Any one of described in boiler export flue gas sampling device.
10. the boiler system of thermal power plant according to claim 9, which is characterized in that the boiler system packet of the thermal power plant
The denitrification apparatus being set on the boiler export flue (6) is included, the boiler is provided on rear side of the denitrification apparatus and is gone out
Mouth flue gas sampling device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821142663.7U CN208902484U (en) | 2018-07-19 | 2018-07-19 | The boiler system of boiler export flue gas sampling device and thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821142663.7U CN208902484U (en) | 2018-07-19 | 2018-07-19 | The boiler system of boiler export flue gas sampling device and thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208902484U true CN208902484U (en) | 2019-05-24 |
Family
ID=66567736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821142663.7U Active CN208902484U (en) | 2018-07-19 | 2018-07-19 | The boiler system of boiler export flue gas sampling device and thermal power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208902484U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113484104A (en) * | 2021-07-30 | 2021-10-08 | 华能上海石洞口发电有限责任公司 | Built-in multi-partition rapid uniform mixing sampling device for SCR (Selective catalytic reduction) outlet flue |
-
2018
- 2018-07-19 CN CN201821142663.7U patent/CN208902484U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113484104A (en) * | 2021-07-30 | 2021-10-08 | 华能上海石洞口发电有限责任公司 | Built-in multi-partition rapid uniform mixing sampling device for SCR (Selective catalytic reduction) outlet flue |
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