CN108872487A - Source of atmospheric pollution multi-pollutant online auto monitoring device - Google Patents
Source of atmospheric pollution multi-pollutant online auto monitoring device Download PDFInfo
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- CN108872487A CN108872487A CN201810740753.4A CN201810740753A CN108872487A CN 108872487 A CN108872487 A CN 108872487A CN 201810740753 A CN201810740753 A CN 201810740753A CN 108872487 A CN108872487 A CN 108872487A
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- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 89
- 238000012806 monitoring device Methods 0.000 title claims abstract description 9
- 231100000719 pollutant Toxicity 0.000 claims abstract description 79
- 238000001514 detection method Methods 0.000 claims abstract description 58
- 239000007789 gas Substances 0.000 claims abstract description 46
- 238000005070 sampling Methods 0.000 claims abstract description 19
- 238000007405 data analysis Methods 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000012544 monitoring process Methods 0.000 claims description 14
- 238000012360 testing method Methods 0.000 claims description 9
- 235000019504 cigarettes Nutrition 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims 1
- 239000000523 sample Substances 0.000 description 32
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 18
- 239000003546 flue gas Substances 0.000 description 18
- 239000003570 air Substances 0.000 description 13
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000000809 air pollutant Substances 0.000 description 2
- 231100001243 air pollutant Toxicity 0.000 description 2
- 238000000738 capillary electrophoresis-mass spectrometry Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000013068 control sample Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0037—NOx
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/004—CO or CO2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0042—SO2 or SO3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0054—Ammonia
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Abstract
A kind of source of atmospheric pollution multi-pollutant online auto monitoring device, including：Gas production feeder connection and air intake is respectively set in several sample lines；The first solenoid valve and second solenoid valve is respectively set in gas production feeder connection and air intake；Bypass line, for receiving the gas of the sampling unit acquisition；Online sensing device passes through multiple pollutant concentration contained by the gas of bypass line for measuring；Data analysis set-up, for determining pollutant concentration in exhaust gases passes；Storage unit stores the detection threshold value upper limit and detection threshold value lower limit of online sensing device；Controller, according to the pollutant concentration maximum value and pollutant concentration minimum value of detection, and the detection threshold value upper limit and detection threshold value lower limit of online sensing device, control the switch of first solenoid valve and second solenoid valve.
Description
Technical field
The present invention relates to a kind of automatic analysis method and analysis systems, more particularly, to big in a kind of field of environmental protection detection
Gas pollution sources multi-pollutant online auto monitoring device.
Background technique
The sustained and rapid development of national economy brings the continuous soaring of energy-consuming, and environmental pollution has become national pass
The hot issue of note.Wherein the degree of atmosphere pollution is particularly acute, and haze occur in succession in the numerous cities of China in Recent Years and area
Weather brings high risks to resident living and trip, and a large amount of discharges of coal-fired flue-gas are one of the reason of forming haze.China
Energy consumption is maximum coal production in the world and consumption state, it is serious big to be generated a large amount of harm in coal-fired process based on fire coal
The pollutant in compression ring border, especially sulfur dioxide, nitrogen oxides, dust particles etc. are the main reason for leading to atmosphere pollution.
For increasingly serious Present Situation of Air Pollution, China increasingly payes attention to monitoring and administers stationary source boiler smoke
Discharge, each segmented industry planning of environmental protection industry and relevant policies are also launched respectively.Environmental Protection Department, National Quality Supervision Bureau General and country
The standardized management committee issues and implements successively《Ambient air quality》,《Fixed pollution source smoke discharge is continuously supervised
Survey technology specification》,《Fossil-fuel power plant atmospheric pollutant emission standard》Deng every file, file has respectively provided cigarette in boiler smoke
The highest of dirt, sulfur dioxide and nitrogen oxides allow concentration of emission and boiler of power plant discharge flue gas pollutant concentration limit,
Detection requirement.The total amount for monitoring stationary source pollutant emission is related to environment protection treating and the energy conservation of major polluting sources enterprise
Emission reduction and environmental protection administration are to the emission monitoring of major polluting sources, data statistics and rewards and punishments management.
Fixed pollution source smoke discharge continuous monitor system (CEMS) will be used to monitor the row of fixed-contamination source pollutants
It puts, the operation of the environment protection treatings equipment such as monitoring desulphurization and denitration monitors system, flue gas by particle monitoring system, gaseous pollutant
Parameter monitoring system and data acquisition processing system composition.By measurement flue gas pollutant concentration of emission and Gas Parameters, in real time
It shows pollutant emission mass concentration, calculates flue gas pollutant emission index and total emission volumn, and by data sampling and processing, pass
Transport to environmental protection administration of government.
There is measuring range in the gas sensor of fixed pollution source smoke discharge continuous monitor system (CEMS), right
In the big sensor of range, detection accuracy is lower, and measuring result error is larger；The sensor small for range, detection essence
Degree is higher, but is more than that its range can not then determine its exact value when gas concentration is larger.To solve the above-mentioned problems, existing
The method used in technology is the sensor that wide range and small-range are arranged simultaneously, according to the corresponding concentration of real-time detection gas
Switch sensor and improves the effect of measurement accuracy to realize high degree of automation.
A kind of pollutant automatic monitoring system is proposed as formerly invention is improved, wherein by the way that multiple sampling pipes are arranged
Road when gas pollutant concentration is more than range in flue gas pipeline, closes the exhaust gases passes entrance in sample lines, opens air
Entrance, to be also able to carry out in the case where not needing the sensor of setting wide range for the flue gas pollutant of no to scale
Accurate detection；But the concentration of different pollutants is different, the highest pollutant of concentration and the minimum pollutant of concentration
Detected value may differ by very much, so that the highest pollutant concentration detected value of concentration is less than the range upper limit opening multiple air intakes
When, it may cause the minimum pollutant concentration of concentration less than Monitoring lower-cut, so as to cause the pollutant concentration measurement that concentration is minimum
Inaccuracy.
Summary of the invention
The present invention provides a kind of source of atmospheric pollution multi-pollutant online auto monitoring device, is able to solve the upper of the prior art
State problem.
As one aspect of the present invention, a kind of source of atmospheric pollution multi-pollutant online auto monitoring device is provided, including：
Gas production feeder connection and air intake is respectively set in sampling unit, including several sample lines, the sample lines, and gas production is logical
Road entrance acquires gas for polluting in source channels, air intake is used for input air；The gas production feeder connection and air
The first solenoid valve and second solenoid valve is respectively set in entrance；Bypass line, for receiving the gas of the sampling unit acquisition；It returns
Air pipe, for the gas of the bypass line to be sent back pollution source channels；Online sensing device, is set to bypass pipe
Road passes through multiple pollutant concentration contained by the gas of bypass line for measuring；Data analysis set-up, for according to online sensing
The testing result of device determines pollutant concentration in exhaust gases passes；Storage unit, in the detection threshold value for storing online sensing device
Limit and detection threshold value lower limit；Controller, according to the pollution in the multiple pollutant concentration of the online sensing device detection
The detection threshold value upper limit of the online sensing device stored in object concentration maxima and pollutant concentration minimum value and storage unit and
Detection threshold value lower limit controls the switch of first solenoid valve and second solenoid valve.
Preferably, the multiple pollutant includes at least two or more gas pollutants.
Preferably, the flue gas pollutant automatic checkout system is when starting detection, into following steps：（1）Open institute
There is the first solenoid valve of sample lines, closes the second solenoid valve of all sample lines；（2）It is online described in the monitoring control devices
The multiple pollutant concentration of sensing device detection, determines its pollutant concentration maximum value and pollutant concentration minimum value, works as dirt
When contaminating the detection threshold value upper limit of the object concentration maxima greater than online sensing device, successively the first of present sample pipeline is closed in judgement
Solenoid valve, after opening second solenoid valve, whether the pollutant concentration minimum value is less than under the detection threshold value of online sensing device
Limit, if it is less than detection threshold value lower limit, then the operation without present sample pipeline, enters step（3）, if it is greater than detection threshold
It is worth lower limit, then carries out the operation of present sample pipeline 11, until the pollutant concentration maximum value of online sensing device 40 detection is small
The unlatching number i of the first solenoid valve 113 in the detection threshold value upper limit or all sample lines 11 of online sensing device 40
Equal to 1；（3）Data analysis set-up the total number N according to sample lines in the sampling unit, the unlatching number M of the first solenoid valve
And each pollutant concentration testing result ρ by bypass line of the online sensing device measurementi, determine exhaust gases passes
In each pollutant concentration ρti=ρi×N/M。
Preferably, the area of section of the bypass line is equal to the sum of the area of section of all sample lines.
Preferably, step（2）In, the controller calculates the second electricity of the first solenoid valve unlatching for closing present sample pipeline
After magnet valve, the pollutant concentration minimum value desired value：ρmin-e=ρmin(j-1)/j；Wherein j is sample lines in the sampling unit
The unlatching number of current first solenoid valve, ρminFor the pollutant concentration minimum value of current online sensing device detection；If ρmin-e
Less than online sensing device detection threshold value lower limit, the first solenoid valve of present sample pipeline is closed in the controller judgement, is opened
After second solenoid valve, the pollutant concentration minimum value is less than the detection threshold value lower limit of online sensing device.
Preferably, step（3）In, if pollutant concentration maximum value is greater than online sensing device and detects range, data point
The testing result that analysis apparatus provides this kind of pollutant concentration is greater than ρl× N/M, wherein ρlRange is detected for online sensing device
The detection threshold value upper limit.
Detailed description of the invention
Fig. 1 is the system composition schematic diagram of the flue gas pollutant automatic monitoring system of the embodiment of the present invention.
Fig. 2 is the detecting step figure of the flue gas pollutant automatic monitoring system of the embodiment of the present invention.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, it is described in detail now in conjunction with attached drawing
A specific embodiment of the invention.Obviously, described embodiment is a part of the embodiments of the present invention, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
Every other embodiment, belong to protection scope of the present invention.
The flue gas pollutant automatic monitoring system of the embodiment of the present invention, referring to Fig. 1, including sampling unit 10, bypass line 20,
Return line 30, online sensing device 40, data analysis set-up 50, controller 60 and storage unit 70.
Sampling unit 10 is for acquiring flue gas from exhaust gases passes 100 comprising and N number of sample lines 11, N are the number greater than 3,
It can be such as 5 sample lines 11.Exhaust gases passes entrance 111 and air intake 112, flue gas is respectively set in sample lines 11
Feeder connection 111 is set in exhaust gases passes 100, can acquire flue gas from exhaust gases passes 100；Air intake 112 and atmosphere
Connection, can be to 11 input air of sample lines；Aspiration pump can be used for exhaust gases passes entrance 111 and air intake 112
Gas extraction, wherein the input of control sample lines 11, keeps the flow velocity of each sample lines 11 identical.Exhaust gases passes entrance 111
And the first solenoid valve 113 and second solenoid valve 114, the first electromagnetism of same sample lines is respectively set in air intake 112
Valve 113 and second solenoid valve 114 when detecting one and only one be to open, pass through controller 60 and control the first solenoid valve
113 and second solenoid valve 114 switch.
Bypass line 20, for receiving the flue gas and air of the acquisition of sampling unit 10.The sectional area of bypass line 20 is equal to
The sum of the sectional area of sample lines 11 in sampling unit 10, thus when making all exhaust gases passes entrances 111 unlatching in sampling unit, bypass
Air pollutant concentration in pipeline 20 is equal to the air pollutant concentration in exhaust gases passes 100.Return line 30, being used for will be other
The flue gas on siphunculus road 20 sends back exhaust gases passes.
Online sensing device 40 passes through pollutant concentration contained by the flue gas of bypass line 20 for measuring；Online sensing dress
Setting 40 can be diode array detector, GFC detector or difference spectrum detector, and the pollutant concentration of detection can be with
It is SO2, CO2, NO, NH3, NO2One or more of Deng.Data analysis set-up 50, for according to online sensing device 40
Testing result determines pollutant concentration in exhaust gases passes 100, specifically, data analysis set-up 50 is adopted according to all in sampling unit 10
Unlatching number i and online sensing device 40 measurement of the first solenoid valve 113 in sample pipeline 11 by bypass line 20
Pollutant concentration testing result ρ, determines pollutant concentration ρ in exhaust gases passest=ρ×N/i。
Controller 60 can be central processing unit or programmable logic controller (PLC).Storage unit 70 stores online pass
The detection threshold value upper limit and detection threshold value lower limit of induction device 40.In the detection process, controller 60 is according to online sensing device
The detection threshold value upper limit and detection threshold value lower limit that the pollutant concentration and storage unit 70 of 40 detections store, control all samplings
First solenoid valve 113 of pipeline 11 and the switch of second solenoid valve 114.Specifically, flue gas pollutant automatic checkout system exists
When starting detection, referring to fig. 2, into following steps：（1）The first solenoid valve 113 of all sample lines 11 is opened, is closed all
The second solenoid valve 114 of sample lines 11；（2）Controller 60 monitors the multiple pollutant concentration that online sensing device 40 detects,
The wherein maximum pollutant concentration value of concentration and the smallest pollutant concentration value of concentration are determined, when pollutant concentration maximum value is big
When the detection threshold value upper limit of online sensing device 40, controller 60 successively judges to close the first electromagnetism of present sample pipeline 11
Valve 113, after opening second solenoid valve 114, whether pollutant concentration minimum value is less than under the detection threshold value of online sensing device 40
Limit, if it is less than detection threshold value lower limit, then the operation without present sample pipeline 11, enters step（3）, if it is greater than detection
Bottom threshold then carries out the operation of present sample pipeline 11, until the pollutant concentration maximum value of online sensing device 40 detection
Less than the unlatching number of the first solenoid valve 113 in the detection threshold value upper limit or all sample lines 11 of online sensing device 40
I is equal to 1；（3）Total number N of the data analysis set-up 50 according to sample lines 11 in sampling unit 10, the unlatching of the first solenoid valve 113
Each pollutant concentration testing result ρ by bypass line 20 that number M and online sensing device 40 measurei, determine cigarette
Each pollutant concentration ρ in gas channelti=ρi×N/M。
Preferably, step（2）In, controller 60 calculates the first electromagnetism 113 for closing present sample pipeline 11, opens second
After solenoid valve 114, pollutant concentration minimum value desired value：ρmin-e=ρmin(j-1)/j；Wherein j is sample lines in sampling unit 10
The unlatching number of 11 current first solenoid valves 113, ρminThe pollutant concentration minimum value detected for current online sensing device 40；
If ρmin-eLess than online 40 detection threshold value lower limit of sensing device, the first electricity of present sample pipeline 11 is closed in the judgement of controller 60
Magnet valve, after opening second solenoid valve, pollutant concentration minimum value is less than the detection threshold value lower limit of online sensing device 40.
Preferably, step（3）In, if pollutant concentration maximum value is greater than the detection range of online sensing device 40, number
It is ρ according to the testing result lower limit that analytical equipment provides this kind of pollutant concentrationl× N/M, wherein ρlFor online sensing device detection limit
The detection threshold value upper limit of journey.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to of the invention its
Its embodiment.This application is intended to cover any variations, uses, or adaptations of invention, these modifications, purposes or
Adaptive change follow general principle of the invention and including the undocumented common knowledge in the art of the present invention or
Conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following power
Benefit requires to point out.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (4)
1. a kind of source of atmospheric pollution multi-pollutant online auto monitoring device, including：Sampling unit, including several sample lines,
Gas production feeder connection and air intake is respectively set in the sample lines, and gas production feeder connection is acquired for polluting in source channels
Gas, air intake are used for input air；The gas production feeder connection and air intake be respectively set the first solenoid valve and
Second solenoid valve；Bypass line, for receiving the gas of the sampling unit acquisition；Return line is used for the bypass line
Gas send back pollution source channels；Online sensing device, is set to bypass line, for measuring the gas by bypass line
Multiple pollutant concentration contained by body；Data analysis set-up, for determining exhaust gases passes according to the testing result of online sensing device
Middle pollutant concentration；It is characterized in that：Further include storage unit, stores the detection threshold value upper limit and detection of online sensing device
Bottom threshold；Controller, it is maximum according to the pollutant concentration in the multiple pollutant concentration of the online sensing device detection
Under the detection threshold value upper limit and detection threshold value of the online sensing device stored in value and pollutant concentration minimum value and storage unit
Limit controls the switch of first solenoid valve and second solenoid valve.
2. source of atmospheric pollution multi-pollutant online auto monitoring device according to claim 1, it is characterised in that：It is described more
Kind pollutant includes at least two or more gas pollutants.
3. source of atmospheric pollution multi-pollutant online auto monitoring system according to claim 2, it is characterised in that：The cigarette
Gas pollutant automatic checkout system is after starting detection, into following steps：（1）Open the first electromagnetism of all sample lines
Valve closes the second solenoid valve of all sample lines；（2）A variety of dirts of online sensing device detection described in the monitoring control devices
Object concentration is contaminated, determines its pollutant concentration maximum value and pollutant concentration minimum value, when pollutant concentration maximum value is greater than
When the detection threshold value upper limit of line sensing device, successively the first solenoid valve of present sample pipeline is closed in judgement, opens the second electromagnetism
After valve, whether the pollutant concentration minimum value is less than the detection threshold value lower limit of online sensing device, if it is less than detection threshold value
Lower limit, then the operation without present sample pipeline, enters step（3）, if it is greater than detection threshold value lower limit, then currently adopted
The operation of sample pipeline 11, until the pollutant concentration maximum value of online sensing device 40 detection is less than the inspection of online sensing device 40
The unlatching number i for measuring the journey upper limit or the first solenoid valve 113 in all sample lines 11 is equal to 1；（3）Data analysis set-up
According to the total number N of sample lines in the sampling unit, the unlatching number M of the first solenoid valve and the online sensing device are surveyed
Each pollutant concentration testing result ρ by bypass line of amounti, determine each pollutant concentration ρ in exhaust gases passesti=ρi
×N/M。
4. source of atmospheric pollution multi-pollutant online auto monitoring device according to claim 3, it is characterised in that：The side
The area of section on siphunculus road is equal to the sum of the area of section of all sample lines.
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| CN201810740753.4A CN108872487B (en) | 2018-07-08 | 2018-07-08 | Multi-pollutant online automatic monitoring device for atmosphere pollution source |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110456006A (en) * | 2019-09-12 | 2019-11-15 | 北京市劳动保护科学研究所 | Pollutant emission monitors system in burst accident |
| CN114264522A (en) * | 2020-09-16 | 2022-04-01 | 长鑫存储技术有限公司 | Environmental monitoring system |
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