CN109142639A - VOCs on-line monitoring system and method - Google Patents
VOCs on-line monitoring system and method Download PDFInfo
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- CN109142639A CN109142639A CN201811083338.2A CN201811083338A CN109142639A CN 109142639 A CN109142639 A CN 109142639A CN 201811083338 A CN201811083338 A CN 201811083338A CN 109142639 A CN109142639 A CN 109142639A
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- 238000004458 analytical method Methods 0.000 claims abstract description 37
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Classifications
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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
- G01N33/0011—Sample conditioning
-
- 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
- G01N33/0047—Organic compounds
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
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Abstract
The present invention discloses a kind of VOCs on-line monitoring system and method, wherein the VOCs on-line monitoring system includes cabinet body, control unit is equipped in cabinet body, sampling unit, Gas controller, analytical unit, display unit, wireless transmission unit and recovery unit, cabinet body is externally provided with Fingerprint Lock, PIN code input device and monitoring camera, sampling unit is for acquiring exhaust gas and being conveyed to analytical unit by Gas controller, analytical unit forms specific analysis data for detection and analysis exhaust gas, and send a control unit, display unit carries out classification storage and display after being used to receive the analysis data information of analytical unit, wireless transmission unit will be for that will analyze data, the video information and relevant operation trace of monitoring camera record are wirelessly transmitted to data center server or responsible institution's supervising platform, recovery unit is used for certainly Dynamic erasing violation operation data, and restore the mode of operation before violation operation.Monitoring data accuracy of the present invention, reliability and Information Security are higher.
Description
Technical field
The present invention relates to VOCs detection technique field, in particular to a kind of VOCs on-line monitoring system and method.
Background technique
Environmental monitoring is ecological environmental protection element task, be objectively evaluate environmental quality, reflection pollution control at
Effect, the basic foundation of implementation environment management and decision, it is necessary to accomplish to monitor in accordance with the law, angles of science monitoring, sincere monitoring.China relates to VOCs
It is numerous to discharge enterprise, wherein overlay area is wide with medium-sized and small enterprises' quantity than great, quantity dispersion, so that environmental monitoring faces
Huge challenge.
Current VOCs on-line monitoring system generallys use flame ion detection technique, PID detection technique and gas phase-flame
Ion technology (GC-FID) mainstream technology.It is used for each enterprise's production type, row's VOCs type, concentration air force different
Detection technique.The medium-sized and small enterprises that low concentration, small air quantity VOCs are discharged generally use PID non-destructive testing VOCs method and carry out VOCs
The monitoring of total emission volumn.
But common pid monitoring instrument is easy to appear data wander, misses because of its design scheme existing defects type in the market
The reliability of phenomena such as alarm, PID monitoring data are controversial.Moreover, on-line monitoring product is safe due to not having monitoring data
Processing and protection function, will lead to some places occur serious environmental data distort, fraud event, seriously affected ring
It is the accuracy of border law enforcement, justice, just and authoritative.
Summary of the invention
The main object of the present invention is to provide a kind of VOCs on-line monitoring system, it is intended to make detection data accuracy, can
It is higher by property and Information Security.
To achieve the above object, the present invention proposes a kind of VOCs on-line monitoring system, which includes
Cabinet body, the cabinet body is interior to be equipped with control unit, sampling unit, Gas controller, analytical unit, display unit, wireless transmission list
Member and recovery unit, the cabinet body are externally provided with Fingerprint Lock, PIN code input device and monitoring camera, the sampling unit, gas control
Described in device, analytical unit, display unit, Fingerprint Lock, PIN code input device, monitoring camera and recovery unit processed are electrically connected
Control unit,
The sampling unit, for acquiring exhaust gas and being conveyed to analytical unit by Gas controller,
The analytical unit forms specific analysis data for detection and analysis exhaust gas, and is sent to control unit,
The display unit carries out classification storage and display after the analysis data information for receiving analytical unit,
The wireless transmission unit, for the video information and relevant operation of data, monitoring camera record will to be analyzed
Trace is wirelessly transmitted to data center server or responsible institution's supervising platform,
The recovery unit is used for auto-erasing violation operation data, and restores the mode of operation before violation operation.
Preferably, the sampling unit includes sampling probe, sampling pipe, moisture separator, filter and air pump, the water
Gas separating device and air pump electric connection described control unit, the sampling probe connection sampling pipe, the moisture separator,
Filter and air pump are sequentially arranged in the sampling pipe, and the air pump is used to extract in external exhaust gas to sampling pipe, and successively leads to
Cross water-separator and filter.
Preferably, the Gas controller be gas circuit switching solenoid valve, the gas circuit switching solenoid valve one end connection described in
Sampling pipe, the other end connect the analytical unit.
Preferably, the analytical unit includes data processor and the gas analysis for being electrically connected the data processor
Instrument, the gas analyzer are electrically connected described control unit, and the gas analyzer connects the gas circuit switching solenoid valve.
Preferably, the VOCs on-line monitoring system further includes the flow controller for being electrically connected described control unit, institute
It states flow controller and is connected to the sampling pipe,
And/or the VOCs on-line monitoring system further includes alarm, the alarm is electrically connected described control unit.
Preferably, comprising the following steps:
S20: judging whether to authorize, if so, receiving the video information under real time monitoring, and records preservation,
S30: judging whether there is edit operation, if so, record operation trace,
S50: acquisition exhaust gas simultaneously conveys,
S60: detection and analysis exhaust gas forms specific analysis data,
S70: carrying out classification storage and display after receiving analysis data information,
S90: judging whether there is violation operation, if so, auto-erasing violation operation data, and restore the behaviour before violation operation
Make state,
S100: transimiison analysis data, the video information under monitoring and relevant operation trace to data center server or
Responsible institution's supervising platform.
Preferably, S50: acquisition exhaust gas and convey specifically includes the following steps:
S51: automatic extraction exhaust gas to sampling pipe,
S52: carrying out aqueous vapor separation,
S53: gas analyzer is delivered to after filtering.
Preferably, S50: further comprising the steps of before the step of acquiring exhaust gas and conveying:
S40: it is passed through compressed gas into sampling pipe and is discharged.
Preferably, S20: further comprising the steps of before judging whether authorization:
S10: starting monitoring camera, Fingerprint Lock and PIN code input device.
Preferably, it S70: receives further comprising the steps of after carrying out classification storage and display after analyzing data information:
S80: judge whether the data of wasted nickel catalyst are exceeded, if so, alarming.
By cabinet body, the cabinet body is interior to be equipped with control unit, sampling unit, Gas controller, divides technical solution of the present invention
Analysis unit, display unit, wireless transmission unit and recovery unit, the cabinet body are externally provided with Fingerprint Lock, PIN code input device and monitoring
Camera, the sampling unit, Gas controller, analytical unit, display unit, Fingerprint Lock, PIN code input device, monitoring camera
Head and recovery unit are electrically connected described control unit, the sampling unit, for acquiring exhaust gas and passing through Gas controller
It is conveyed to analytical unit, the analytical unit forms specific analysis data for detection and analysis exhaust gas, and is sent to control
Unit, the display unit carry out classification storage and display after the analysis data information for receiving analytical unit, described wireless
Transmission unit is wirelessly transmitted to number for will analyze data, the video information of monitoring camera record and relevant operation trace
According to central server or responsible institution's supervising platform, the recovery unit is used for auto-erasing violation operation data, and restores to disobey
Preoperative mode of operation is advised, keeps data accuracy, reliability and the Information Security of detection higher with this.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structural schematic diagram of one embodiment of VOCs on-line monitoring system of the present invention；
Fig. 2 is the flowage structure schematic diagram of one embodiment of VOCs on-line monitoring method of the present invention；
Fig. 3 is the flowage structure schematic diagram of another embodiment of VOCs on-line monitoring method of the present invention；
Fig. 4 is the flowage structure schematic diagram that the step S50 of Fig. 2 and Fig. 3 VOCs on-line monitoring method is refined.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 10 | Cabinet body | 51 | Data processor |
| 20 | Control unit | 52 | Gas analyzer |
| 30 | Sampling unit | 60 | Display unit |
| 31 | Sampling probe | 70 | Recovery unit |
| 32 | Sampling pipe | 80 | Fingerprint Lock |
| 33 | Moisture separator | 90 | PIN code input device |
| 34 | Filter | 100 | Monitoring camera |
| 35 | Air pump | 110 | Flow controller |
| 40 | Gas controller | 120 | Alarm |
| 41 | Gas circuit switching solenoid valve | 130 | Wireless transmission unit |
| 50 | Analytical unit |
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In the present invention unless specifically defined or limited otherwise, term " connection ", " fixation " etc. shall be understood in a broad sense,
For example, " fixation " may be a fixed connection, it may be a detachable connection, or integral；It can be mechanical connection, be also possible to
Electrical connection；It can be directly connected, the connection inside two elements or two can also be can be indirectly connected through an intermediary
The interaction relationship of a element, unless otherwise restricted clearly.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, and should not be understood as
Its relative importance of indication or suggestion or the quantity for implicitly indicating indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include at least one of the features.In addition, the technical side between each embodiment
Case can be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution
Conflicting or cannot achieve when occur will be understood that the combination of this technical solution is not present, also not the present invention claims guarantor
Within the scope of shield.
The present invention proposes a kind of VOCs on-line monitoring system.
VOCs therein refers to that boiling point is equal to or less than 250 DEG C of chemical substance.So boiling point is more than those of 250 DEG C substances
It is not included into the scope of VOCs, often referenced as plasticizer (plasticiser).
In outdoor, VOCs is mainly from fuel combustion and communications and transportation；And indoors then mainly from coal-fired and natural gas
The smog of equal combustion products, smoking, heating and the cooking etc., building and ornament materials, furniture, household electrical appliance, detergent and human body
The discharge etc. of itself.
The source of indoor VOCs includes following aspect:
1. organic solution, such as paint, aqueous coating, adhesive, cosmetics, detergent, seam composition；
2. construction material, such as wood-based plate, foam heat insulating material, plastic plate；
3. house decorative material, such as wallpaper, other ornaments；
4. fibrous material, such as carpet, tapestry and synthetic fiber curtain；
5. office appliance, such as ink, duplicator, printer；
6. design and use improperly ventilating system etc.；
7. the imperfect combustion of domestic fuel and tobacco leaf；
Exceeded alarm and supervisory systems, sampling unit are monitored on-line according to the gridding that pollutant sources establish industrial park
The mode of mesh-managing method establishes area " on earth lateral to side, longitudinal direction " according to the theory of " net fixes, lattice fix duty, duty determine people "
Domain gridding supervision platform, application, the multinomial wisdom environmental protection technology of integration, in comprehensive grasp, analysis discharge of pollutant sources, meteorologic factor
Basis on, developed using based on Gauss algorithm model.Each plant area of real-time statistics, monitoring point monitoring device data,
And according to the emission behaviour and its meteorological condition of each monitoring point, to analyze and speculate emission behaviour whole in region.Realization pair
VOCs (volatile organic matter) discharge areas integral monitoring, pollutant diffusion tendency calculate that the functions such as discharge source resolution are tied simultaneously
The technologies such as Internet of Things, intelligent acquisition system, GIS-Geographic Information System, dynamic chart system are closed, integration, shared, exploitation are established comprehensive
Change, fining, informationization, intelligentized region on-line monitoring platform, realizes to control pollution sources uncontrollable discharge, reduce atmosphere
The integrated managements such as pollution.
Referring to Fig.1, in an embodiment of the present invention, which includes cabinet body 10, is set to the cabinet body
Control unit 20, sampling unit 30 in 10, Gas controller 40, analytical unit 50, display unit 60, wireless transmission unit
130 and recovery unit 70, the cabinet body be externally provided with Fingerprint Lock 80, PIN code input device 90 and monitoring camera 100, the sampling
Unit 30, Gas controller 40, analytical unit 50, display unit 60, Fingerprint Lock 80, PIN code input device 90, monitoring camera
100 and recovery unit 70 be electrically connected described control unit 20,
The sampling unit 30, for acquiring exhaust gas and being conveyed to analytical unit 50 by Gas controller 40,
The analytical unit 50 forms specific analysis data for detection and analysis exhaust gas, and is sent to control unit
20,
The display unit 60 carries out classification storage and display after the analysis data information for receiving analytical unit 50,
The wireless transmission unit 130, for data, the video information of monitoring camera record and correlation behaviour will to be analyzed
It is wirelessly transmitted to data center server or responsible institution's supervising platform as trace,
The recovery unit 70 is used for auto-erasing violation operation data, and restores the mode of operation before violation operation.
Wherein first GC-MS can be combined to carry out qualitative and quantitative analysis to organic exhaust gas before VOCs on-line monitoring system installation
(in the case that operating condition is constant) then chooses the suitable correction coefficient of VOCs on-line monitoring system, can rapid survey organic waste
The VOCs concentration value of gas, to achieve the effect that real time monitoring.And coefficient adjustment periodically is carried out to it using GC-MS, to guarantee
The monitoring accuracy of system, can also the functions such as external flow velocity, temperature, pressure and sampling, carry out the monitoring of total emission volumn.
Control unit 20 therein may include having processor, effective fingerprint of Fingerprint Lock 80 therein user for identification,
PIN code input device 90 therein is on site or remote input password is authorized, when fingerprint recognition and password identification are correct
It is afterwards openable cabinet body 10, and during user's operation, is monitored in real time by monitoring camera 100, it is therein
Recovery unit 70 may include have storage hard disk and processing chip, storage hard disk storage processing before data and by predetermined operation after
Data information, wherein the data before storage processing are primary monitoring data, can will be stored entirely in monitoring platform distributed document
In system, for storing the unstructured data of magnanimity, to meet and adapt to data volume, data characteristics and the difference of query processing
Demand is partially stored in relevant database, and the measurement data that (volatile organic matter) monitoring point all VOCs generates
Real-time storage, it is conventional design in computerized information recovery technology that individual recovery unit 70, which uses, and recovery unit 70 is also
It can be electrically connected external background server or cloud server, which may include having Web Service
It is docked with facilitating with third-party platform with Json formatted data interface for external system calling system data.When detect against
Rule operation or change data when, auto-erasing violation operation data can be carried out, and restore the mode of operation before violation operation or
Real-time status keeps the reliability of detection and Information Security higher with this.
Sampling unit 30 therein includes sampling probe 31, sampling pipe 32, moisture separator 33, filter 34 and air pump
35, the moisture separator 33 and air pump 35 are electrically connected described control unit 20, and the sampling probe 31 is connected to the sampling
Pipe 32, the moisture separator 33, filter 34 and air pump 35 are sequentially arranged in the sampling pipe 32, and the air pump 35 is for extracting
In external exhaust gas to sampling pipe 32, and water-separator 33 and filter 34 are passed sequentially through, to handle exhaust gas, removed
Moisture and bulky grain, to improve the precision of the detection of analytical unit 50, the data for detecting the VOCs on-line monitoring system are accurate
Property is higher.
The wireless transmission unit 130 therein may include having wireless transmitter and wireless receiver, the wireless transmission list
Member 130 is conventional design, and details are not described herein for specific structure, which can receive data center services
After the request signal of device or responsible institution's supervising platform, the video information of analysis data, monitoring camera record can be transmitted wirelessly
And relevant operation trace is wirelessly transmitted to data center server or responsible institution's supervising platform stores, to monitor,
Using more convenient.
Further, the Gas controller 40 is gas circuit switching solenoid valve 41, described 41 one end of gas circuit switching solenoid valve
The sampling pipe 32 is connected, the other end connects the analytical unit 50.With this can to different time in sampling pipe 32 or position into
Row multiple repairing weld does not cause to interfere each other, divides analytical unit 50 when carrying out the analysis of a variety of data in order to analytical unit 50
The accuracy for analysing the result of detection is higher.
Analytical unit 50 therein includes data processor 51 and the gas analysis for being electrically connected the data processor 51
Instrument 52, the gas analyzer 52 are electrically connected described control unit 20, and the gas analyzer 52 connects the gas circuit switching
Solenoid valve 41.The gas analyzer 52 can be PID analyzer or FID analyzer, to pass through the ion of gas analyzer 52
Detection technique further increases the precision of its detection.
Real-time monitoring data analysis, total amount accounting, source resolution and source strength meter can also be provided in the analytical unit 50 therein
Calculation, area alignment monitoring and early warning, pollution sources DIFFUSION PREDICTION and analysis etc., while can check the function such as historical record and analysis data
Energy.In the processing of VOCs the inquiry of historical data, since data volume is huge, more services can be also managed by using cloud computing technology
Device node carries out parallel processing, by inquiring and exporting this partial data for using, Gaussian plume model specifically can be used, divide
Cloth redundant node judge algorithm realization layout to VOCs discharge areas, integral monitoring, pollutant diffusion tendency calculate, VOCs row
Put source resolution etc..
Preferably, the VOCs on-line monitoring system further includes the flow controller for being electrically connected described control unit 20
110 or gas compression tank (not shown), the flow controller 110 or gas compression tank are connected to the sampling pipe 32, therein
Flow controller 110 or gas compression tank are for being passed through compressed gas into sampling pipe 32 and being discharged.At more severe scene
In the occasion of measurement, in order to guarantee VOCs on-line monitoring system can long-term continuous operation, by purging sampling pipe 32 in
Gas, avoid in measurement environment dust or other pollutants to impacting in sampling probe 31 and sampling pipe 32, and flow
The mode that the air inlet of amount controller 110 can be accessed manually or automatically accesses in sampling pipe 32, by opening flow control
The switch of device 110 sends open signal to flow controller 110 by control unit 20, and 110 work of flow controller can be realized
Make, and to the gas in purging sampling pipe 32, to improve the precision for the wasted nickel catalyst being passed through.
Further, the VOCs on-line monitoring system further includes alarm 120, and the alarm 120 is electrically connected institute
State control unit 20.Alarm warning can be carried out by alarm 120, when the VOCs on-line monitoring system judges the number of wasted nickel catalyst
According to it is exceeded when, alarm 120 is alarmed.A specifically embodiment are as follows: corresponding threshold values is arranged to monitoring index, is more than threshold values
Perhaps it is pushed immediately by mail App in certain time within time-out one minute or the forms such as short message notifies enforcer of administration, given
Administrative department sets out rapidly, the behavior for preventing welding from protecting in time.
Further, the VOCs on-line monitoring system further includes the automatic calibration unit of monitoring device (not shown), is adopted
With Internet of Things and cloud computing technology, the neural network model of monitoring data is established, realizes that the automatic calibration of monitoring device, reduction are set
Received shipment ties up expense, improves the accuracy of detection data.
One embodiment are as follows: use the zeroing calibration of zero level air.
The operation for being set to cabinet body 10/maintenance button is switched into " maintenance " shelves.
" system manager " the Account Logon system of use, account password " admin ".
It clicks " instrument calibration " and enters calibration management interface.
" reading equipment Alignment point " is clicked, reads alignment lists from gas analyzer 52.Alignment lists include " concentration
The information such as value " (value of calibrating gas), " voltage value " (voltage value that gas analyzer detects).
Gas analyzer 52 extracts air calibration zero point automatically, checks after AOC value is stablized and records its numerical value.
It double-clicks 0 calibration point and enters " newly-increased mixed gas group " window, voltage value is written into AOC value.After " enabling " is chosen, really
Recognizing the point is that curve calculates point.
Zero point value is saved by " determination ".
Further, it is completely calibrated by school,
One embodiment are as follows: the operation for being set to cabinet body 10/maintenance button is switched into " maintenance " shelves.
" system manager " the Account Logon system of use, account password " admin ".
It clicks " instrument calibration " and enters calibration management interface.
" reading equipment Alignment point " is clicked, reads alignment lists from gas analyzer 52.Alignment lists include " concentration
The information such as value " (value of calibrating gas), " voltage value " (voltage value that gas analyzer 52 detects).
Calibrating gas (isobutene) gas cylinder pressurizing valve is opened, gas is sent to gas analyzer 52, realization is passed through compressed gas
Body purges the gas in sampling pipe 32, avoids in measurement environment dust or other pollutants to sampling probe 31 and sampling pipe 32
Inside impact.
The exhaust gas flow that regulating gas analyzer 52 detects is 0.4~0.6L/min.
AOC value is observed, records its numerical value after it is stablized.
It double-clicks selected calibration point and enters " newly-increased mixed gas group " window, voltage value is written into AOC value." enabling " is chosen
Afterwards, system confirms that the point is that curve calculates point.
Calibration value is saved by " determination ".
Still further, adjusting the standard for carrying out improving detection data by the flow that sampling unit 30 adjusts the exhaust gas of acquisition
True property, flow general control is in (0.4~0.6) L/min.
One sensor distributing of the VOCs on-line monitoring system are as follows: according in area to be tested toxic and harmful gas distribution and
The factors such as characteristic, environmental sensitive area distribution, cardinal wind identify big in conjunction with the construction situation of original monitoring station in the region
Gas unexpected environmental accident emphasis diffusion path, plans as a whole VOCs on-line monitoring system in the region.The important of region is comprehensively considered again
Property, on the basis of the pollution level of atmosphere pollution, the height of industrialization development level, grid dividing is carried out to region,
Monitoring site is set up in the point of intersection or central point of grid, algorithm is judged using distributed redundant node, removes sensor redundancy
Node, so that computation complexity is reduced, communication overhead and equipment cost.Simultaneously be capable of accurate judgement monitoring data validity and
Accuracy can draw the diffusion tendency of the region different periods pollutant, in favor of carrying out science decision to pollutant catabolic gene.
VOCs on-line monitoring system has a group discharge suitable for middle-size and small-size, can monitor exhaust gas hydrocarbon, benzene homologues discharge total concentration amount.
Important technological parameters such as following table
In actual use, including following analysis result:
1, VOCs on-line monitoring system (suitable for enterprise's installations more than 60,000 air quantity)
Using automatic control system, automatic cycling operating is easy to maintain.
It is monitored on-line suitable for VOCs discharge outlet, monitors the operational efficiency of the front/rear equipment of waste gas pollution control and treatment.Data are analyzed such as
Under:
Referring to Fig. 2, the present invention also proposes a kind of VOCs on-line monitoring method, which is applied to above-mentioned
VOC on-Line Monitor Device realize, specifically, the VOCs on-line monitoring method the following steps are included:
S20: judging whether to authorize, if so, receiving the video information under real time monitoring, and records preservation,
S30: judging whether there is edit operation, if so, record operation trace,
S50: acquisition exhaust gas simultaneously conveys,
S60: detection and analysis exhaust gas forms specific analysis data,
S70: carrying out classification storage and display after receiving analysis data information,
S90: judging whether there is violation operation, if so, auto-erasing violation operation data, and restore the behaviour before violation operation
Make state,
S100: transimiison analysis data, the video information under monitoring and relevant operation trace to data center server or
Responsible institution's supervising platform.
Further, S20: further comprising the steps of before judging whether authorization:
S10: starting monitoring camera 100, Fingerprint Lock 80 and PIN code input device 90.
Specifically, acquiring the finger print information of Fingerprint Lock 80 and the identifying code letter of PIN code input device 90 by control unit 20
Breath, and judge whether correctly, can correctly authorize, then carry out receiving the picture under real time monitoring by monitoring camera 100, and
Record saves；When the control unit 20, which receives data input, is edited, automatically records and save operation trace.
When entering the wasted nickel catalyst stage, referring to Fig. 4, S50: acquisition exhaust gas and convey specifically includes the following steps:
S51: automatic extraction exhaust gas to sampling pipe 32,
S52: carrying out aqueous vapor separation,
S53: gas analyzer 52 is delivered to after filtering.
The specially described air pump 35 extracts in external exhaust gas to sampling pipe 32, and passes sequentially through water-separator 33 and mistake
Filter 34, then exhaust gas is detected and analyzed by gas analyzer 52 and forms specific analysis data, finally by the analysis number
Classification storage and display are carried out according to display screen and memory etc. can be passed through.In the work of VOCs on-line monitoring system or receive outer
During the signal in portion is operated, can the data of the entire VOCs on-line monitoring system of real time automatic detection and the safety of hardware, when
Detect abnormal violation operation, such as wantonly altered data, malicious virus intrusion, do not operated according to step and rule, do not adopted
It takes the verification code information of correct finger print information and PIN code input device 90 still to carry out the situation such as operating, auto-erasing can be carried out and disobeyed
Operation data is advised, and restores the mode of operation before violation operation or real-time status, the reliability and data safety of detection are made with this
Property is higher.
Referring to Fig. 3, it is preferable that S50: further comprising the steps of before the step of acquiring exhaust gas and conveying:
S40: it is passed through compressed gas into sampling pipe 32 and is discharged.
It specifically, can be manually or automatically by the air inlet of flow controller 110 or gas compression tank (not shown)
The mode of access accesses in sampling pipe 32, by opening the switch of flow controller 110 or sending open signal by control unit
To flow controller 110, the work of flow controller 110 can be realized, and to the gas in purging sampling pipe 32, be passed through with improving
Wasted nickel catalyst precision.
Referring to Fig. 3, it is preferable that S70: it further includes following for receiving after carrying out classification storage and display after analyzing data information
Step:
S80: judge whether the data of wasted nickel catalyst are exceeded, if so, alarming.
Specifically, alarm warning can be carried out by alarm 120, when the VOCs on-line monitoring system judges wasted nickel catalyst
Superscalar data, alarm 120 is alarmed, and display screen is shown, if not exceeded, display screen is shown, not into
Row alarm.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (10)
1. a kind of VOCs on-line monitoring system, which is characterized in that be equipped with control unit, sampling list including cabinet body, in the cabinet body
Member, Gas controller, analytical unit, display unit, wireless transmission unit and recovery unit, the cabinet body be externally provided with Fingerprint Lock,
PIN code input device and monitoring camera, the sampling unit, Gas controller, analytical unit, display unit, Fingerprint Lock, PIN
Code loader, monitoring camera and recovery unit are electrically connected described control unit,
The sampling unit, for acquiring exhaust gas and being conveyed to analytical unit by Gas controller,
The analytical unit forms specific analysis data for detection and analysis exhaust gas, and is sent to control unit,
The display unit carries out classification storage and display after the analysis data information for receiving analytical unit,
The wireless transmission unit, for the video information and relevant operation trace of data, monitoring camera record will to be analyzed
It is wirelessly transmitted to data center server or responsible institution's supervising platform,
The recovery unit is used for auto-erasing violation operation data, and restores the mode of operation before violation operation.
2. VOCs on-line monitoring system as described in claim 1, which is characterized in that the sampling unit include sampling probe,
Sampling pipe, moisture separator, filter and air pump, the moisture separator and air pump are electrically connected described control unit, described
Sampling probe is connected to the sampling pipe, and the moisture separator, filter and air pump are sequentially arranged in the sampling pipe, the air pump
For extracting in external exhaust gas to sampling pipe, and pass sequentially through water-separator and filter.
3. VOCs on-line monitoring system as claimed in claim 2, which is characterized in that the Gas controller is gas circuit switching electricity
Magnet valve, gas circuit switching solenoid valve one end connect the sampling pipe, and the other end connects the analytical unit.
4. VOCs on-line monitoring system as claimed in claim 3, which is characterized in that the analytical unit includes data processor
With the gas analyzer for being electrically connected the data processor, the gas analyzer is electrically connected described control unit, described
Gas analyzer connects the gas circuit switching solenoid valve.
5. such as the described in any item VOCs on-line monitoring systems of claim 2-4, which is characterized in that VOCs on-line monitoring system
System further includes the flow controller for being electrically connected described control unit, and the flow controller is connected to the sampling pipe,
And/or the VOCs on-line monitoring system further includes alarm, the alarm is electrically connected described control unit.
6. a kind of VOCs on-line monitoring method, which comprises the following steps:
S20: judging whether to authorize, if so, receiving the video information under real time monitoring, and records preservation,
S30: judging whether there is edit operation, if so, record operation trace,
S50: acquisition exhaust gas simultaneously conveys,
S60: detection and analysis exhaust gas forms specific analysis data,
S70: carrying out classification storage and display after receiving analysis data information,
S90: judging whether there is violation operation, if so, auto-erasing violation operation data, and restore the operation shape before violation operation
State,
S100: transimiison analysis data, the video information under monitoring and relevant operation trace to data center server or supervisor
Unit supervising platform.
7. VOCs on-line monitoring method as claimed in claim 6, which is characterized in that S50: acquiring exhaust gas and conveying specifically includes
Following steps:
S51: automatic extraction exhaust gas to sampling pipe,
S52: carrying out aqueous vapor separation,
S53: gas analyzer is delivered to after filtering.
8. VOCs on-line monitoring method as claimed in claim 6, which is characterized in that S50: acquisition exhaust gas and the step of convey it
It is preceding further comprising the steps of:
S40: it is passed through compressed gas into sampling pipe and is discharged.
9. VOCs on-line monitoring method as claimed in claim 6, which is characterized in that S20: judging whether that authorization further includes before
Following steps:
S10: starting monitoring camera, Fingerprint Lock and PIN code input device.
10. VOCs on-line monitoring method as claim in any one of claims 6-9, which is characterized in that S70: receiving analysis data
It is further comprising the steps of after carrying out classification storage after information and showing:
S80: judge whether the data of wasted nickel catalyst are exceeded, if so, alarming.
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| CN114115164A (en) * | 2021-12-30 | 2022-03-01 | 铜陵化工集团化工研究设计院有限责任公司 | Chemical production safety monitoring device |
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| CN112816541A (en) * | 2020-12-31 | 2021-05-18 | 山西清环能创环境科技有限公司 | Poisonous and odorous gas detection and monitoring system containing VOCs |
| CN113012388A (en) * | 2021-02-19 | 2021-06-22 | 浙江清之元信息科技有限公司 | Pollution source online monitoring system and online monitoring data false identification analysis method |
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