CN106918637A - The online total hydrocarbon concentration monitoring device and method of gas treatment equipment - Google Patents
The online total hydrocarbon concentration monitoring device and method of gas treatment equipment Download PDFInfo
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- CN106918637A CN106918637A CN201710245059.0A CN201710245059A CN106918637A CN 106918637 A CN106918637 A CN 106918637A CN 201710245059 A CN201710245059 A CN 201710245059A CN 106918637 A CN106918637 A CN 106918637A
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- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
- G01N27/626—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using heat to ionise a gas
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Abstract
The present invention relates to the online total hydrocarbon concentration monitoring device and method of a kind of gas treatment equipment, the cost coordination problem of safety and environmental protection demand and the multi-detector outfit of many condition monitorings of multiple spot of the prior art and continuous monitoring is mainly solved.By the online total hydrocarbon concentration monitoring device and method using a kind of gas treatment equipment, using 2 detectors, the 1st detector keeps being monitored total hydrocarbon concentration in gas treatment equipment inlet gas the present invention, total hydrocarbon concentration change in monitoring gas；With total hydrocarbon concentration in the 2nd discharge gas of detector monitors gas treatment equipment, and be switched in good time the intermediate treatment such as dilution of gas treatment equipment workshop section carry out verify monitoring technical scheme preferably solve the problem, can be used for gas treatment equipment online total hydrocarbon concentration monitoring in.
Description
Technical field
The present invention relates to the online total hydrocarbon concentration monitoring device and method of a kind of gas treatment equipment.
Background technology
For the gas treatment equipment of the environmental protection treatment of waste gas in the industries such as petrochemical industry, the total hydrocarbon concentration of its accessible waste gas
Generally there is an optimum range (such as 1000~10000mg/m3), when total hydrocarbon concentration exceeds setting value in inlet exhaust gases, can produce
The problems such as raw treatment effeciency declines, or even the security risks such as overtemperature, blast occur, is during this generally needs to be grasped inlet exhaust gases
Total hydrocarbon concentration, provides data support, while being with total hydrocarbon concentration in taking the means such as dilution reduction inlet exhaust gases for processing unit
Ensure that the measures such as dilution actually reach design requirement, it is also desirable to total hydrocarbon concentration in the waste gas after dilution is monitored, to have
The protection processing unit of effect, and for verification process effect, it is necessary to be monitored to total hydrocarbon concentration in gas vent, to ensure
Reaching environmental protection allows emission request.Namely generally such petrochemical industry emission-control equipment, at least need to entrance, dilution after in
Between process and outlet totally 3 points position or state carry out lasting monitoring.But total hydrocarbon concentration prison in online gas common at present
Device or system are surveyed, is mostly monitored for total hydrocarbon concentration in the waste gas of fixed-contamination source emission, due to the difference of application scenario, led to
The features such as often there is monitoring site few (instrument only corresponds to a stationary source floss hole), it is impossible to adapt to gas treatment dress
Put in gas total hydrocarbon concentration monitoring monitoring site demand it is many (generally comprise entrance, outlet and the interstage gas in always
Hydrocarbon concentration monitor demand) etc. requirement.Cui Yanqing, horse are more superfine in Chinese invention patent CN102621272A《A kind of atmospheric carbon
Hydrogen compound in-line analyzer》In disclose a kind of instrument of measurement methane and NMHC based on pyrolytic conversion stove, only
It is 1 on-line computing model, does not consider the problem of multiple spot monitoring, it is impossible to ensures the needs such as the technology controlling and process of gas treatment equipment.On
The regional technology specification that sea market Environmental Protection Agency formulates《Shanghai City stationary source NMHC on-line monitoring system is installed and networked
Technical requirements》In the main monitoring to NMHC in the fixed-contamination source emission waste gas based on single-point be made that regulation, not
It is related to the continuous monitoring requirement of the multiple spot and many situations in emission-control equipment.And aforesaid way is separate unit detector and sets
Put, when the treatment such as needing to safeguard detector, returning to zero, calibrate, in order to ensure the safety of processing unit, certainly will need whole
Individual processing unit is shut down, and brings larger environmental protection pressure.And if 1 on-line monitoring instrument is disposed to each monitoring site
Words, can bring equipment cost higher, while 3 monitoring instruments run the fortune such as required electric power, hydrogen, clean air simultaneously
The consumption for tieing up cost also can be very big.Namely at present it is existing report and technical scheme exist single-point monitoring be unsatisfactory for demand or
The equipment and the too high problem of O＆M cost of every outfit detector.
The content of the invention
The technical problems to be solved by the invention be in the prior art to many condition monitorings of multiple spot of gas treatment equipment and
The cost of continuous monitoring and the coordination problem of demand, there is provided a kind of online total hydrocarbon concentration monitoring device of new gas treatment equipment
And method.The method have meet many condition monitorings of multiple spot, the safety and environmental protection requirement of continuous monitoring and lower-cost advantage.
To solve the above problems, the technical solution adopted by the present invention is as follows：A kind of online total hydrocarbon of gas treatment equipment is dense
Degree monitoring device and method, described device include detector, dilution system；Relied on by hardware of programmable control system, using 2
Platform detector, the 1st detector keeps being monitored total hydrocarbon concentration in gas treatment equipment inlet gas, total in monitoring gas
Hydrocarbon change in concentration；With total hydrocarbon concentration in the 2nd discharge gas of detector monitors gas treatment equipment, monitoring environment protection standard is grasped
Emission behaviour, when monitoring that gas treatment equipment inlet gas concentration exceeds early warning value, gas treatment equipment starts dilution system
System is diluted to inlet gas, and control system judges that safety priority is lifted, after the 2nd detector is switched into monitoring dilution
Gas treatment equipment inlet gas in total hydrocarbon concentration, monitor dilution effect, confirm enter processing unit gas in total hydrocarbon
Concentration meets safety requirements, is supported for system control provides data.When total hydrocarbon concentration is reduced under early warning value in inlet gas
When, the 2nd detector switches back into the monitoring to total hydrocarbon concentration in floss hole.
In above-mentioned technical proposal, it is preferable that total hydrocarbon concentration in the row's of monitoring gas under 1 detector nominal situation, grasp
The environment protection emission situation up to standard of device, when total hydrocarbon concentration rising needs processing unit to be diluted treatment in there is gas, peace
Full importance upgrading, the detector is switched to the checking detection that workshop section after diluting is diluted effect.
In above-mentioned technical proposal, it is preferable that 2 detectors can ensure that 1 is in maintenance, zeroing or align mode wherein
When, being judged by system and switching control, holding is to online total hydrocarbon concentration in the waste gas for entering gas treatment equipment processing unit
Uninterrupted monitoring.
In above-mentioned technical proposal, it is preferable that selected 2 detectors are have response to whole total hydrocarbon concentrations in gas
Detector, select flame ionization ditector.
In above-mentioned technical proposal, it is preferable that the control program of monitoring system is by the automatic zero set of detector and alignment settings
Carried out in the operating mode more stable stage, selection is carried out at the night for not carrying out process variations operation generally.
The present invention is the online total hydrocarbon concentration monitoring system in a kind of gas treatment equipment, and it overcomes existing methods prison
Survey can not cover monitoring gas treatment equipment process inlet, pilot process and total hydrocarbon concentration etc. lacks in the full-range gas of outlet
Point, with the gas treatment equipment overall process of dual detector low cost covering entrance, pilot process and outlet, and separate unit dimension
The advantages of continuing to monitor the total hydrocarbon concentration into the waste gas of gas treatment equipment processing unit is still can ensure that during shield, is achieved preferably
Technique effect.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the method for the invention.
Below by embodiment, the invention will be further elaborated, but is not limited only to the present embodiment.
Specific embodiment
【Embodiment 1】
The online total hydrocarbon concentration monitoring device and method of a kind of gas treatment equipment, as shown in figure 1, online total hydrocarbon concentration prison
Examining system can process pilot process, 3 monitoring points of offgas outlet from exhaust gas entrance, dilution, and (hereinafter referred to as 1# monitoring points, 2# are supervised
Measuring point and 3# monitoring points) extract gaseous sample fast sample to 2 fid detectors and carry out total hydrocarbon concentration detection in gas.
Online total hydrocarbon concentration monitoring system is joined by modes such as RS485, analog quantity and switching value I/O signals with the PLC of outside
Connect.By the information real-time Transmissions such as total hydrocarbon concentration, valve state and sensors work state to outside PLC (Programmable logical controllers
Device), and by the running status of the online total hydrocarbon concentration monitoring system of outside PLC remote controls.
In normal condition, 2 flame ionization ditectors (hereinafter referred to as 1#FID and 2#FID) monitor 1# prisons respectively
Measuring point and the exhaust gas concentration of 3# monitoring points, whether the former is used to monitor total hydrocarbon concentration in inlet exhaust gases in safe range, after
Person be used for monitoring treatment after tail gas in total hydrocarbon concentration whether qualified discharge.
When 1#FID monitoring results exceed setting value, PLC provides signal to gas treatment equipment, for controlling to open empty
The means such as gas dilution are being lowered into total hydrocarbon concentration in the waste gas of gas cell；At the same time, PLC control valves are switched over,
So that 2#FID is changed to monitor the gas concentration after dilution treatment, the i.e. gas concentration of 2# monitoring points, to verify having for dilution means
Effect property, it is ensured that the safety of subsequent processing units.When total hydrocarbon concentration still exceeds setting value in the gas for monitoring 2# monitoring points, can
The directly safety measure such as emptying or shutdown is taken to provide timely information with for control system.Set when 1#FID monitoring results are less than
During definite value, control system switch valve causes that 2#FID returns to the state of monitoring 3# monitoring points, continues to monitor emission status.
Safeguarded when 1#FID is in, the situation such as zeroing or calibration when, by the control of outside PLC, switch sampling stream,
The sampling passage of 2#FID is switched to 2# monitoring points, 2#FID is changed to total hydrocarbon concentration in the gas for monitor 2# monitoring points so that
System can grasp the total hydrocarbon concentration into the gas of subsequent processing units, so that the safe operation to ensure processing unit is provided
Data are supported.When total hydrocarbon concentration exceeds setting value in the gas for monitoring 2# monitoring points, can be taken directly for control system
The safety measure such as emptying or shutdown provides timely information.
When 2#FID is in the situations such as maintenance, zeroing or calibration, in the gas of the 1# monitoring points monitored by 1#FID
Total hydrocarbon concentration so that system can grasp the total hydrocarbon concentration into the gas of subsequent processing units, so as to ensure processing unit
Safe operation provide data support.Can be control when total hydrocarbon concentration exceeds setting value in the gas for monitoring 1# monitoring points
System processed takes the directly safety measure such as emptying or shutdown to provide timely information.
Obviously, using the method for the present invention, many condition monitorings of multiple spot of gas treatment equipment and continuous are preferably solved
The cost coordination problem that the safety and environmental protection demand of monitoring is equipped with multi-detector, due to reducing 1 hydrogen flameionization detection
The outfit of device, it will be apparent that reduce outfit and O＆M cost, can be applied to entrance, pilot process and total hydrocarbon concentration in outlet
In the gas treatment equipment of monitoring requirements.
Claims (5)
1. a kind of online total hydrocarbon concentration monitoring device and method of gas treatment equipment, described device includes detector, dilution system
System；Relied on by hardware of programmable control system, using 2 detectors, the 1st detector is kept to gas treatment equipment entrance
Total hydrocarbon concentration is monitored in gas, total hydrocarbon concentration change in monitoring gas；With the 2nd detector monitors gas treatment equipment
Total hydrocarbon concentration in discharge gas, grasps monitoring environment protection standard emission behaviour, when monitoring gas treatment equipment inlet gas concentration
When exceeding early warning value, gas treatment equipment starts dilution system and inlet gas is diluted, and control system judges that safety is preferential
Level lifting, the total hydrocarbon concentration in the gas treatment equipment inlet gas after monitoring dilution is switched to by the 2nd detector, is monitored dilute
Effect is released, confirmation meets safety requirements into total hydrocarbon concentration in the gas of processing unit, supported for system control provides data.When
Total hydrocarbon concentration is reduced to when under early warning value in inlet gas, and the 2nd detector switches back into the prison to total hydrocarbon concentration in floss hole
Survey.
2. the online total hydrocarbon concentration monitoring device and method of gas treatment equipment according to claim 1, it is characterised in that 1
Total hydrocarbon concentration in the row's of monitoring gas, grasps the environment protection emission situation up to standard of device, when there is gas under detector nominal situation
Middle total hydrocarbon concentration is raised when needing processing unit to be diluted treatment, security significance upgrading, and the detector is switched into dilution
Workshop section is diluted the checking detection of effect afterwards.
3. the online total hydrocarbon concentration monitoring device and method of gas treatment equipment according to claim 1, it is characterised in that 2
Detector can ensure that wherein 1 in safeguarding, zeroing or during align mode, judged by system and switching control, it is right to keep
The uninterrupted monitoring of online total hydrocarbon concentration into the waste gas of gas treatment equipment processing unit.
4. the online total hydrocarbon concentration monitoring device and method of gas treatment equipment according to claim 1, it is characterised in that institute
2 detectors of selection are the detector for having response to whole total hydrocarbon concentrations in gas, select flame ionization ditector.
5. the online total hydrocarbon concentration monitoring device and method of gas treatment equipment according to claim 1, it is characterised in that prison
The control program of examining system carries out the automatic zero set of detector and alignment settings in the operating mode more stable stage, and selection is logical
The night for often not carrying out process variations operation is carried out.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710245059.0A CN106918637B (en) | 2017-04-14 | 2017-04-14 | On-line total hydrocarbon concentration monitoring device and method for gas treatment device |
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| CN201710245059.0A CN106918637B (en) | 2017-04-14 | 2017-04-14 | On-line total hydrocarbon concentration monitoring device and method for gas treatment device |
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| CN106918637A true CN106918637A (en) | 2017-07-04 |
| CN106918637B CN106918637B (en) | 2020-02-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113567612A (en) * | 2021-06-28 | 2021-10-29 | 上海神开石油科技有限公司 | Gas logging total hydrocarbon detection method and device based on catalytic combustion principle |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1439098A (en) * | 2000-05-25 | 2003-08-27 | 加拿大环境部长 | Emission sampling apparatus and method |
| US20030199649A1 (en) * | 2002-03-26 | 2003-10-23 | Orbison David Robert | Method and apparatus for the controlled dilution of organometallic compounds |
| CN2585219Y (en) * | 2002-09-18 | 2003-11-05 | 李抚生 | Low dilution ratio sample treatment device of smoke continuous monitoring system |
| JP2005091297A (en) * | 2003-09-19 | 2005-04-07 | Toyota Motor Corp | Total hydrocarbon analysis system |
| DE102004056615A1 (en) * | 2004-11-24 | 2006-06-01 | Sächsisches Institut für die Druckindustrie GmbH - Institut des Vereins Polygraph Leipzig e.V. | Determination of hydrocarbons concentration comprises mixing continuous/discontinuously hydrocarbon containing measuring gas with oxygen dilution gas to form mixture and measuring the concentration of hydrocarbon by a pellistor mass sensor |
| CN101000278A (en) * | 2007-01-12 | 2007-07-18 | 武汉四方光电科技有限公司 | Method and device for measuring pollutant discharging total of motor vehicle |
| CN101701897A (en) * | 2009-10-22 | 2010-05-05 | 清华大学 | Filter material counting efficiency detection system and detection method based on quasi-monodisperse aerosol |
| CN102401834A (en) * | 2011-04-26 | 2012-04-04 | 中南大学 | Multi-channel on-line sampling and sample introducing method for high-temperature high-thickness liquid material |
| CN103033411A (en) * | 2012-12-20 | 2013-04-10 | 中国人民解放军第三军医大学 | Smoke diluting device |
| CN105067776A (en) * | 2015-08-13 | 2015-11-18 | 中国石油化工股份有限公司 | Safe pretreating method for volatile organic compound treatment |
| CN105066148A (en) * | 2015-08-13 | 2015-11-18 | 中国石油化工股份有限公司 | Low-temperature heat accumulating type method for treating VOCs gas in catalytic oxidation manner |
| CN105334259A (en) * | 2015-11-12 | 2016-02-17 | 中国石油化工股份有限公司 | Total hydrocarbon tester having on-line attenuation function |
| CN205538888U (en) * | 2016-02-01 | 2016-08-31 | 青岛市光电工程技术研究院 | A continuous monitoring device for pollutant gas emission |
-
2017
- 2017-04-14 CN CN201710245059.0A patent/CN106918637B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1439098A (en) * | 2000-05-25 | 2003-08-27 | 加拿大环境部长 | Emission sampling apparatus and method |
| US20030199649A1 (en) * | 2002-03-26 | 2003-10-23 | Orbison David Robert | Method and apparatus for the controlled dilution of organometallic compounds |
| CN2585219Y (en) * | 2002-09-18 | 2003-11-05 | 李抚生 | Low dilution ratio sample treatment device of smoke continuous monitoring system |
| JP2005091297A (en) * | 2003-09-19 | 2005-04-07 | Toyota Motor Corp | Total hydrocarbon analysis system |
| DE102004056615A1 (en) * | 2004-11-24 | 2006-06-01 | Sächsisches Institut für die Druckindustrie GmbH - Institut des Vereins Polygraph Leipzig e.V. | Determination of hydrocarbons concentration comprises mixing continuous/discontinuously hydrocarbon containing measuring gas with oxygen dilution gas to form mixture and measuring the concentration of hydrocarbon by a pellistor mass sensor |
| CN101000278A (en) * | 2007-01-12 | 2007-07-18 | 武汉四方光电科技有限公司 | Method and device for measuring pollutant discharging total of motor vehicle |
| CN101701897A (en) * | 2009-10-22 | 2010-05-05 | 清华大学 | Filter material counting efficiency detection system and detection method based on quasi-monodisperse aerosol |
| CN102401834A (en) * | 2011-04-26 | 2012-04-04 | 中南大学 | Multi-channel on-line sampling and sample introducing method for high-temperature high-thickness liquid material |
| CN103033411A (en) * | 2012-12-20 | 2013-04-10 | 中国人民解放军第三军医大学 | Smoke diluting device |
| CN105067776A (en) * | 2015-08-13 | 2015-11-18 | 中国石油化工股份有限公司 | Safe pretreating method for volatile organic compound treatment |
| CN105066148A (en) * | 2015-08-13 | 2015-11-18 | 中国石油化工股份有限公司 | Low-temperature heat accumulating type method for treating VOCs gas in catalytic oxidation manner |
| CN105334259A (en) * | 2015-11-12 | 2016-02-17 | 中国石油化工股份有限公司 | Total hydrocarbon tester having on-line attenuation function |
| CN205538888U (en) * | 2016-02-01 | 2016-08-31 | 青岛市光电工程技术研究院 | A continuous monitoring device for pollutant gas emission |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113567612A (en) * | 2021-06-28 | 2021-10-29 | 上海神开石油科技有限公司 | Gas logging total hydrocarbon detection method and device based on catalytic combustion principle |
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| CN106918637B (en) | 2020-02-07 |
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