CN110018092A - A kind of gas fired-boiler flue gas particles detection device - Google Patents
A kind of gas fired-boiler flue gas particles detection device Download PDFInfo
- Publication number
- CN110018092A CN110018092A CN201810017343.7A CN201810017343A CN110018092A CN 110018092 A CN110018092 A CN 110018092A CN 201810017343 A CN201810017343 A CN 201810017343A CN 110018092 A CN110018092 A CN 110018092A
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- Prior art keywords
- flue gas
- air
- detection device
- exhausting duct
- fired
- Prior art date
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 71
- 239000003546 flue gas Substances 0.000 title claims abstract description 71
- 238000001514 detection method Methods 0.000 title claims abstract description 35
- 239000007789 gas Substances 0.000 title claims abstract description 22
- 239000002245 particle Substances 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 239000013618 particulate matter Substances 0.000 claims abstract description 7
- 238000012360 testing method Methods 0.000 claims abstract description 5
- 238000005119 centrifugation Methods 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 7
- 230000002000 scavenging effect Effects 0.000 claims description 6
- 238000010926 purge Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 1
- 238000007664 blowing Methods 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000012491 analyte Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/075—Investigating concentration of particle suspensions by optical means
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of gas fired-boiler flue gas particles detection devices, comprising: particulate matter testing agency, including respectively with respect to the light source and photoelectric detector for being set to flue gas air-exhausting duct flue two sides；Flue gas water removal body, including top cover, inner wall and baffle；Flue gas heating mechanism, including being set to heating muff that is above flue gas water removal body and being wrapped on flue gas air-exhausting duct.The apparatus structure is simple, it is highly reliable and it is anti-interference can it is strong the features such as.Flue gas after flue gas water removal body, on the one hand can remove most of condensed water in flue gas, on the other hand play the role of stable flow velocity, it is ensured that detection carries out under certain constant pressure and flow state, reduces the probability that error occurs.By the heating to detection zone, the generation of condensed water in the detection is avoided, while cleaning the mirror surface of photoelectric detector by blowing mechanism, improves detection accuracy.
Description
Technical field
The present invention relates to flue gas inspection technologies, more specifically refer to a kind of gas fired-boiler flue gas particles detection device.
Background technique
The required energy in the industrial production, such as electric energy, thermal energy mostly come from the energy that the burning of fuel is discharged.
Wherein, atmosphere pollution caused by fuel combustion is polluted the most serious with smoke stack emission flue gas particles.After these fuel combustions
The flue dust discharged is the main stationary source damaged to atmosphere quality.
35 tons of gas fired-boilers of certain iron and steel enterprise are discharged flue gas to it by national requirements and carry out purified treatment, and discharged
While be measured in real time processing result, exercise supervision and control with the discharge to pollutant.But in actual detection process
In, about 20% moisture content is also contained since gas fired-boiler exhaust gas temperature is between 85~95 DEG C, in flue gas, is easy cold in pipeline
But it is formed and reaches saturated humidity, the drop state of low temperature.In this state, it is easy to since the condensation of steam generates fine grained
The measurement error of object.Meanwhile flue gas flow velocity in flue is unstable, also generates large effect to the accuracy of detection data.
As shown in table 1 in the prior art to the measurement method of particulate matter quality or relative mass concentration, wherein filter membrane claims
Although weight method resists the ability of external factor stronger, but need longer sampling time, and the speed that is difficult to be applicable to seek quickness is surveyed
The occasion for measuring result, cannot achieve on-line monitoring, and measurement result is the average value in a period of time, operate also more complex.It compares
Compared with for, although there is certain error in other several concentration measuring methods, but they have the continuous detection mode of automatic on-line, more
It is suitble to the real-time detection of flue gas particles.But these methods also have certain defect, for particle analyte detection by smoke moisture, stream
The factors such as speed are affected, and can not be suitable for above-mentioned measure field.
Table 1 often uses particle concentration Comparison between detecting methods
Summary of the invention
The purpose of the present invention is in view of the foregoing drawbacks, providing a kind of gas fired-boiler flue gas particles detection device, can eliminate
Moisture interference in flue gas in gas boiler flue stablizes flue gas flow rate, accurate continuous detection pollutant emission.
To achieve the goals above, the present invention uses following technical scheme.
A kind of gas fired-boiler flue gas particles detection device is set on flue gas air-exhausting duct, comprising:
Particulate matter testing agency, including respectively with respect to the light source and photoelectric detector for being set to flue gas air-exhausting duct flue two sides；
Flue gas water removal body, including cylinder, top cover and centrifugation baffle, cylinder upper and lower end are respectively equipped with and flue gas air-exhausting duct
It is connected into and out of air port, multiple centrifugation baffles, which are located in cylinder and enclose along air inlet end one, to be arranged, and centrifugation baffle upper end passes through
Top seal；
Flue gas heating mechanism, including being set to heating mantle that is above flue gas water removal body and being wrapped on flue gas air-exhausting duct
Pipe.
The heating muff is equipped with air inlet pipe and drainpipe, and air inlet pipe is equipped with intake valve, and drainpipe, which is equipped with, to be dredged
Water valve.
It further include blowing mechanism, scavenging conduit and spray head including being set to photoelectric detector front end.
The spray head is equipped with strip air curtain hole.
Described scavenging conduit one end is connected to compressed air hose, is additionally provided with solenoid valve and pneumatic triple piece on compressed air hose.
In above-mentioned technical proposal of the invention, had using a kind of gas fired-boiler flue gas particles detection device of the invention
There is following advantage:
1, structure is simple, it is highly reliable and it is anti-interference can it is strong the features such as.
2, flue gas after flue gas water removal body, on the one hand can remove most of condensed water in flue gas, on the other hand rise
The effect of stable flow velocity is arrived, it is ensured that detection carries out under certain constant pressure and flow state, reduces the probability that error occurs.
3, by the heating to detection zone, the generation of condensed water in the detection is avoided, while clear by blowing mechanism
The mirror surface of clean photoelectric detector, improves detection accuracy.
Detailed description of the invention
Fig. 1 is the use state diagram of gas fired-boiler flue gas particles detection device of the invention；
Fig. 2 is the cross-sectional view of flue gas water removal body of the invention；
Fig. 3 is the top view of flue gas water removal body of the invention；
Fig. 4 is the structural schematic diagram of spray head of the invention.
Specific embodiment
Technical solution of the present invention is further illustrated with reference to the accompanying drawing.
Currently, optical transmission method is mainly utilized in particle analyte detection, it is based primarily upon the measuring principle of delustring law, when a branch of
After monochromatic light enters a certain absorbing medium surface, since a part of luminous energy, light can have been sponged when passing through certain thickness medium
Intensity will necessarily be weakened, when the concentration and bigger thickness of absorbing medium, then the decrease of luminous intensity can more be shown
It writes.By attenuation of light when by dust-laden region, to judge to obtain the concentration in dust-laden region, such methods structure letter
It is single, there is continuous detection function, but anti-interference ability is poor, vulnerable to aqueous vapor in flue gas, flow rate effect, it is necessary to be equipped with necessary auxiliary
Device is helped, to ensure detection accuracy.
On the basis of being based on optical transmission method principle, the present invention devises a kind of gas fired-boiler with water removal flow stabilizing function
Flue gas particles detection device, as shown in Figure 1, whole device is set on flue gas air-exhausting duct 1, it mainly include particulate matter detection machine
Structure, flue gas water removal body 13 and flue gas heating mechanism three, particulate matter testing agency include opposite set on flue gas air draft respectively
The light source 2 and photoelectric detector 10 of 1 flue two sides of pipe.And on same axis, when light source 2 emits light, across entire cigarette
Road shines directly on photoelectric detector 10, and since light is decayed by dust-laden region, photoelectric detector 10 is by receiving
The electric signal that optical signal is converted into convenient for comparison, and it is transmitted to database and processing module, the size of analysis comparison pad value, from
And obtain the content of particulate matter in flue gas.
In conjunction with shown in Fig. 2, Fig. 3, flue gas water removal body 13 includes that cigarette includes cylinder 20, top cover 21 and centrifugation baffle 22, cylinder
20 upper and lower end of body be respectively equipped be connected with flue gas air-exhausting duct 1 into and out of air port 23,24, multiple centrifugation baffles 22 are located at cylinder 20
Interior and enclose and be arranged along 23 end one of air inlet, centrifugation 22 upper end of baffle is sealed by top cover 21, into and out of air port 23,24, cylinder
20, a circle centrifugation baffle 22, top cover 21 are coaxial arrangement, when flue gas enters flue gas water removal body 13 from bottom to top, due to top cover
21 blocking, flue gas is passed through from the gap between surrounding centrifugation baffle 22, and the curved shape for being centrifuged baffle 22 produces flue gas
Rotary motion is given birth to, the drop in flue gas is before this under the action of viscous force with flow rotation, therewith effect of the drop in centrifugal force
The lower inner wall for being thrown to cylinder 20, thus by separating, and flue gas can then continue up, and enter heating detection zone by air outlet 23
Domain, at this point, flue gas stream also becomes relatively steady, constant flow rate due to by resistance.
Flue gas heating mechanism includes heating mantle that is set on 13 top of flue gas water removal body and being wrapped on flue gas air-exhausting duct 1
Pipe 3, as one embodiment, the heating muff 3 is equipped with air inlet pipe 4 and drainpipe 11, and air inlet pipe 4 is equipped with intake valve
5, drainpipe 11 is equipped with drain valve 12, by inputting steam, and ensures that steam flows, so that continuous heating is carried out, so that inspection
Surveying regional temperature reduces the content of its moisture, it is ensured that detection accuracy to ensure the drying of flue gas higher than flue-gas temperature.
Incorporated by reference to shown in Fig. 4, in addition, since the finish on 10 surface of photoelectric detector is more important, if contamination dust, meeting
It affects to testing result.Gas fired-boiler flue gas particles detection device of the invention further includes blowing mechanism, if
In photoelectric detector 10 front end and do not influence at light irradiation comprising scavenging conduit 8 and spray head 9, spray head 9 be equipped with elongated gas
Curtain hole 25, it is ensured that purge gas can uniformly, be effectively ejected on 10 surface of photoelectric detector, remove dust.Scavenging conduit 8 one
End is connected to external compressed air hose, and it is gentle to be additionally provided with solenoid valve 7 to provide clean compressed air, on compressed air hose
Dynamic three linked piece 6 adjusts compressed air pressure between 0.1-0.2Mpa by pneumatic triple piece 6；It is set and is compressed by solenoid valve 7
Air injection frequency be 5-15 times/min, 2-6 seconds/time of injecting time.
In conclusion using the gas fired-boiler flue gas particles detection device with water removal flow stabilizing function of the invention, energy
Enough on-line monitorings that soot dust granule object is discharged accurately detect whether discharge of pollutant sources object meets existing country's discharge mark
Quasi- regulation；The performance of dedusting and purifying device and Pollution treatment installation can correctly be evaluated, supervise the operating condition of dirt preventing facility；For
Environmental quality management and evaluation provide science accurate foundation.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention,
And be not used as limitation of the invention, as long as the change in spirit of the invention, to embodiment described above
Change, modification will all be fallen within the scope of claims of the present invention.
Claims (5)
1. a kind of gas fired-boiler flue gas particles detection device, which is characterized in that be set on flue gas air-exhausting duct, comprising:
Particulate matter testing agency, including respectively with respect to the light source and photoelectric detector for being set to flue gas air-exhausting duct flue two sides；
Flue gas water removal body, including cylinder, top cover and centrifugation baffle, cylinder upper and lower end is respectively equipped with to be connected with flue gas air-exhausting duct
Into and out of air port, multiple centrifugation baffles, which are located in cylinder and enclose along air inlet end one, to be arranged, and centrifugation baffle upper end passes through top cover
Sealing；
Flue gas heating mechanism, including being set to heating muff that is above flue gas water removal body and being wrapped on flue gas air-exhausting duct.
2. a kind of gas fired-boiler flue gas particles detection device as described in claim 1, it is characterised in that: the heating mantle
Pipe is equipped with air inlet pipe and drainpipe, and air inlet pipe is equipped with intake valve, and drainpipe is equipped with drain valve.
3. a kind of gas fired-boiler flue gas particles detection device as described in claim 1, it is characterised in that: further include purging machine
Structure, scavenging conduit and spray head including being set to photoelectric detector front end.
4. a kind of gas fired-boiler flue gas particles detection device as claimed in claim 3, it is characterised in that: on the spray head
Equipped with strip air curtain hole.
5. a kind of gas fired-boiler flue gas particles detection device as claimed in claim 3, it is characterised in that: the scavenging conduit one
End is connected to compressed air hose, is additionally provided with solenoid valve and pneumatic triple piece on compressed air hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810017343.7A CN110018092B (en) | 2018-01-09 | 2018-01-09 | Gas boiler flue gas particulate matter detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810017343.7A CN110018092B (en) | 2018-01-09 | 2018-01-09 | Gas boiler flue gas particulate matter detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110018092A true CN110018092A (en) | 2019-07-16 |
| CN110018092B CN110018092B (en) | 2022-02-22 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810017343.7A Active CN110018092B (en) | 2018-01-09 | 2018-01-09 | Gas boiler flue gas particulate matter detection device |
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| CN (1) | CN110018092B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110732225A (en) * | 2019-11-12 | 2020-01-31 | 福州大学 | Flue water removal device and water removal method |
| CN111208045A (en) * | 2020-04-17 | 2020-05-29 | 湖南九九智能环保股份有限公司 | Self-cleaning dust sensing system |
| CN114324098A (en) * | 2022-03-10 | 2022-04-12 | 南京波瑞自动化科技有限公司 | Double-light-path laser forward scattering particulate matter concentration measuring device |
| CN116380741A (en) * | 2023-06-05 | 2023-07-04 | 湖北圣信特种设备检测有限公司 | Device and method for detecting components of combustion flue gas of boiler |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110732225A (en) * | 2019-11-12 | 2020-01-31 | 福州大学 | Flue water removal device and water removal method |
| CN111208045A (en) * | 2020-04-17 | 2020-05-29 | 湖南九九智能环保股份有限公司 | Self-cleaning dust sensing system |
| CN111208045B (en) * | 2020-04-17 | 2020-07-14 | 湖南九九智能环保股份有限公司 | Self-cleaning dust sensing system |
| CN114324098A (en) * | 2022-03-10 | 2022-04-12 | 南京波瑞自动化科技有限公司 | Double-light-path laser forward scattering particulate matter concentration measuring device |
| CN116380741A (en) * | 2023-06-05 | 2023-07-04 | 湖北圣信特种设备检测有限公司 | Device and method for detecting components of combustion flue gas of boiler |
| CN116380741B (en) * | 2023-06-05 | 2023-08-25 | 湖北圣信特种设备检测有限公司 | Device and method for detecting components of combustion flue gas of boiler |
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| Publication number | Publication date |
|---|---|
| CN110018092B (en) | 2022-02-22 |
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