CN106840264A - A kind of continuous on-line monitoring system of flue gas - Google Patents
A kind of continuous on-line monitoring system of flue gas Download PDFInfo
- Publication number
- CN106840264A CN106840264A CN201710094081.XA CN201710094081A CN106840264A CN 106840264 A CN106840264 A CN 106840264A CN 201710094081 A CN201710094081 A CN 201710094081A CN 106840264 A CN106840264 A CN 106840264A
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- Prior art keywords
- continuous
- gas
- flue gas
- monitoring subsystem
- continuous monitoring
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
The invention discloses a kind of continuous on-line monitoring system of flue gas, including the particulate solid continuous monitoring subsystem in chimney or flue, gaseous contaminant continuous monitoring subsystem and Gas Parameters continuous monitoring subsystem, the particulate solid continuous monitoring subsystem, gaseous contaminant continuous monitoring subsystem and Gas Parameters continuous monitoring subsystem are all connected with data processing with telecommunication system；The gaseous contaminant continuous monitoring subsystem includes that the sampling probe with blowback and heating, heating tape, flue gas pretreatment system and the infrared gas analyser that are sequentially connected, gas sampling, blowback, filter dirt, drainage of the gaseous contaminant continuous monitoring subsystem etc. are controlled by PLC control system.The present invention is monitored by particulate solid, gaseous contaminant and Gas Parameters, coordinates telecommunication and data acquisition unit, with remote fault diagnosis, powerful software function, using it is flexible the features such as.
Description
Technical field
The present invention relates to field, a kind of continuous on-line monitoring system of flue gas is related generally to.
Background technology
Particulate matter (also referred to as flue dust), gaseous contaminant (including sulfur dioxide, nitrogen oxides to atmosphere pollution source emission
Deng) device of concentration and total emission volumn continuous monitoring is carried out, it is referred to as " flue gas discharge continuous monitoring system " or " flue gas is supervised online
Examining system ", in the world general address CEMS (Continuous Emission Monitoring System).Fume emission connects
Continuous monitoring system can be used not only for emission compliance monitoring and blowdown metering use, may be simultaneously used for equipment (dedusting, desulfurization,
Combustion Operation of Boilers) running status inspection, fault diagnosis etc.；Thus more and more widely used.
With the enhancing of people's environmental protection consciousness, various countries require more and more higher to the limit value of fume emission, particularly right
The pollutant emission in waste incineration factory and power plant, to this, conventional fume emission monitoring system can not meet and uses need
Ask.For example：Existing flue gas monitoring system architecture is complicated, and Monitoring Data is single, it is impossible to which flue gas is comprehensively monitored；Gas
The temperature difference is easily produced after being sampled from flue with outside air, moisture is separated out, SO is influenceed2Concentration is monitored Deng soluble gas, while
Also serious corrosion can be caused to equipment；Filter not fine enough in monitoring process, usually remain many dust and moisture influence
Monitoring effect.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of to particulate solid, gaseous contaminant and Gas Parameters
Be monitored, with remote fault diagnosis, powerful software function, using flexible, autgmentability it is strong, accuracy is high, cost performance is high
The continuous on-line monitoring system of flue gas.
The technical problems to be solved by the invention can adopt the following technical scheme that to realize：
A kind of continuous on-line monitoring system of flue gas, including particulate solid continuous monitoring in chimney or flue
System, gaseous contaminant continuous monitoring subsystem and Gas Parameters continuous monitoring subsystem, the particulate solid continuous monitoring
Subsystem, gaseous contaminant continuous monitoring subsystem and Gas Parameters continuous monitoring subsystem all with data processing and telecommunication
System is connected；
Characterized in that, the particulate solid continuous monitoring subsystem includes emission measurement instrument；
The gaseous contaminant continuous monitoring subsystem includes sampling probe, the heat tracing with the blowback and heating that are sequentially connected
Band, flue gas pretreatment system and infrared gas analyser, verification Standard Gases, institute are connected with the flue gas pretreatment system side
Gas sampling, blowback, filter dirt, drainage of gaseous contaminant continuous monitoring subsystem etc. is stated to be controlled by PLC control system；
The Gas Parameters continuous monitoring subsystem includes the flow monitoring instrument and flue gas that are connected with flue gas flow rate transmitter
Pressure monitor and smoke moisture transmitter that the connected temperature monitor of temperature transmitter is connected with flue gas pressures transmitter
Connected moisture monitor；
The data processing includes the data acquisition unit, system control interface and the system that are sequentially connected with telecommunication system
Control process device.
In a preferred embodiment of the invention, the flue gas pretreatment system includes the blowback control being sequentially connected
Case, primary filter, condenser and accurate filter, the primary filter, condenser side are connected with drainage system；Institute
State blowback control cabinet to be arranged between 2 heating tapes, it is empty that the blowback control cabinet, drainage system side are provided with compression
Gas input port, near the compressed air input port be provided with manual ball valve is controlled to compressed air.
In a preferred embodiment of the invention, the system control process device is an industrial computer；Institute
State and remote communication interface, A/D interfaces, printer and display are provided with system control process device.
In a preferred embodiment of the invention, the sampling probe is by sampling pipe, main cavity, heating isothermal body, pottery
Porcelain high-precision filter, the letter of mounting flange set, protective cover, temperature controller part composition；The heating tape is every meter of heat tracing of invariable power,
Its heat tracing temperature is controlled by the temperature controller；The infrared gas analyser is the gaseous contaminant continuous monitoring subsystem
Core component, for analyzing SO2,NOX,O2Deng gas.
In a preferred embodiment of the invention, the industrial computer have 2 Intel Duo Processors, 19 cun
Flat-screen CRT monitor, 250G hard disks, 1G internal memories, 2 standard serials mouthful and 1 spp.
In a preferred embodiment of the invention, the blowback control cabinet power supply is by PLC control system control, institute
Primary filter is stated to be adsorbed by strainer screen, can be with Chalk-dust filtering and a small amount of moisture, the accurate filter precision can
Up to 0.1-0.2 microns；The sampling pipe external diameter is 25mm, a length of 500mm, and the simple external diameter of mounting flange set is 70mm, a length of
300mm, the temperature controller and the main body integrated design of the sampling probe.
In a preferred embodiment of the invention, the casing of the blowback control cabinet is for white and by steel plastic-spraying
Into, the primary filter by polytetrafluoroethylmaterial material, joint by PVDF materials are made, the casing of the condenser for white and
Formed by steel plastic-spraying, the drainage system liquid contact portion is all corrosion resistant non-metallic material, the accurate filter
It is made up of PVDF materials, filter core is ceramic diamond spar.
In a preferred embodiment of the invention, the part that the sampling probe is contacted with sample gas all uses 316
Stainless steel material is processed into, and the protective cover and temperature controller case are manufactured using LF21 rustproof aluminium sheets；The heating tape sampling
It is polyfluortetraethylene pipe to manage, and insulating sections are made of that silica wool, crust are silastic materials.
The beneficial effects of the invention are as follows：A kind of continuous on-line monitoring system of flue gas, by particulate solid, gaseous contamination
Thing and Gas Parameters are monitored, and coordinate telecommunication and data acquisition unit, with remote fault diagnosis, powerful software
Function, using it is flexible the features such as；Invariable power heating tape is set in gaseous contaminant continuous monitoring subsystem, gas from flue is prevented
With outside air bad student's temperature difference after interior sampling, moisture is separated out, influence SO2Concentration is monitored Deng soluble gas, the standard of monitoring is improve
Exactness.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the continuous on-line monitoring system of flue gas of the invention.
Fig. 2 is that a kind of structure of the gaseous contaminant continuous monitoring subsystem of the continuous on-line monitoring system of flue gas of the invention is shown
It is intended to.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is expanded on further.
Referring to Fig. 1 to Fig. 2, what is be given in figure is a kind of continuous on-line monitoring system of flue gas, including installed in chimney or cigarette
Particulate solid continuous monitoring subsystem 100, gaseous contaminant continuous monitoring subsystem 200 and Gas Parameters in road are continuously supervised
Survey subsystem 300, particulate solid continuous monitoring subsystem 100, gaseous contaminant continuous monitoring subsystem 200 and Gas Parameters
Continuous monitoring subsystem 300 is all connected with data processing with telecommunication system 400.By to particulate solid, gaseous contamination
Thing and Gas Parameters are monitored, and coordinate data processing and telecommunication system 400, with remote fault diagnosis, powerful
Software function, using it is flexible the features such as.
Particulate solid continuous monitoring subsystem 100 include emission measurement instrument 110, can supporting flue gas monitoring system, also may be used
Independent one or several connects into a set of monitoring smoke dust network, shares a foreground.Emission measurement instrument 110 uses laser back scattering
Principle, the refractive index that the mechanical oscillation and flue-gas temperature inequality for not being afraid of flue are caused is uneven, so as to the beam wobbling for causing；It is single-ended
Install, without centering；Exported using standard industry normalized current, it is easy to connect；Instrument overall power is very small, and about 5W is left
It is right；Measurement zone size can be with customized under special requirement condition.
Gaseous contaminant continuous monitoring subsystem 200 includes the sampling probe 210, companion with blowback and heating being sequentially connected
The torrid zone 220, flue gas pretreatment system 230 and infrared gas analyser 240, the gas of gaseous contaminant continuous monitoring subsystem 200
Sampler body, blowback, filter dirt, drainage etc. are controlled by PLC control system 250.Sampling probe 210 by sampling pipe, main cavity,
Heating isothermal body, ceramic high-precision filter, the letter of mounting flange set, protective cover, temperature controller part composition.
Sampling probe 210 is that with electrical heating heat tracing function, self-heating and can implement the sampling apparatus of temperature control.Sampling is visited
First 210 forbid being used in the occasion for having explosive gas atmosphere, and the on-Line Voltage of its power supply is 220VAC/50Hz, power
It is 500W；Temperature≤600 DEG C of sample gas, dustiness≤100g/m3；The environment temperature of sampling is -15~45 DEG C；Sampling probe
210 parts contacted with sample gas are all processed into using 316 stainless steel materials, and resistance to corrosion is very strong under hot conditions；
Encapsulant is fluorubber.In the presence of aspiration pump, detected sample gas enters sampling and visits by the sampling pipe in insertion sample tube wall
First 210 cavity, sample gas delivery outlet is flowed to through dust filter unit；The temperature of sample gas is all the time in higher in sampling process
State, (temperature controller highest temperature control setting value be 120 DEG C) makes that the water in sample gas is unlikely to be condensed, so as to significantly improve
The condition of work of filter；To ensure not condense in the process, the temperature control value of setting, 20 should be higher by than its dew point value~
30℃.Sampling pipe external diameter is 25mm, a length of 500mm；It can integrally be pulled out from device during filter element replacing, greatly
Shorten the time safeguarded and change, and reduce labour intensity；The simple external diameter of mounting flange set is 70mm, a length of 300mm；Temperature controller with
The main body integrated design of sampling probe.Protective cover and temperature controller case are manufactured using LF21 rustproof aluminium sheets, thus the device is complete
Field work environment can be competent at；By temperature controller and main body integrated design, compact conformation is easy to operate.
Heating tape 220 is every meter of heat tracing of invariable power, even if middle failure does not interfere with the heating of other positions yet, it is ensured that
The continuity of half heat；Its heat tracing temperature safeguards small by temperature controller control, easy to operate；Heating tape sampling pipe is polytetrafluoroethyl-ne
Alkene pipe, insulating sections are made of that silica wool, crust are silastic materials；Heat tracing temperature≤200 DEG C of heating tape, length≤40
Rice；The on-Line Voltage of power supply is 220VAC/50Hz, and power is 25W, and the temperature of environment is -15~45 DEG C.
Flue gas pretreatment system 230 includes the blowback control cabinet 231, primary filter 232, the condenser 233 that are sequentially connected
And accurate filter 234, primary filter 232, the side of condenser 233 are connected with drainage system 235；In blowback control cabinet
231st, the side of drainage system 235 is provided with compressed air input port 2311, and compressed air is for oil-free is anhydrous, pressure>0.4Mpa, Q
The pure source of the gas of=30L/min, is provided with first manual ball valve 2312, the second manual ball near compressed air input port 2311
Valve 2351 is controlled to compressed air.
Blowback control cabinet 231 is used for the blowback to sampling probe 210, prevents sampling probe 210 from blocking；Blowback control cabinet
231 are arranged between 2 heating tapes 220 and are provided with pneumatic ball valve 2313, and the power supply of blowback control cabinet 231 is by PLC controls
System 250 is controlled；PLC control system 250 by control pneumatic ball valve 2313 conducting or by come control sample gas collection and
Stop；Purged by the pulsed whirlwind of PLC control system 250, can effectively remove the dust of the filter core of sampling probe 210, reached
To the low-maintenance of sampling probe 210, high efficiency feature.Be provided with air accumulator 2314 in the blowback control cabinet 231, air accumulator 2314 with
First manual ball valve 2312 is connected；Air accumulator 2314 each blowback pressure >=0.4MPa, it is to avoid site pressure is unstable, tolerance
It is small.The voltage of blowback control cabinet 231 is 220V, and environment temperature is 5~45 DEG C；The casing of blowback control cabinet 231 is for white and by steel
Matter plastic-spraying is formed.
Primary filter 232 is the second level filtering after sampling probe 210, and it is adsorbed by strainer screen, can mistake
Filter dust and a small amount of moisture；Primary filter 232 is by polytetrafluoroethylmaterial material, joint by PVDF materials are made.Condenser 233
The effective concentration of component that reduces is lost in, it is ensured that the gas into analyzer is pure, and dry, its casing is for white and by steel
Plastic-spraying is formed.Accurate filter 234 is made up of PVDF materials, filter core is ceramic diamond spar, and precision is up to 0.1-0.2 microns.Draining
The liquid contact portion of system 235 is all corrosion resistant non-metallic material.Infrared gas analyser 240 is continuously supervised for gaseous contaminant
The core component of subsystem 200 is surveyed, for analyzing SO2,NOX,O2Deng gas.
Gas Parameters continuous monitoring subsystem 300 include be connected with flue gas flow rate transmitter 310 flow monitoring instrument 320,
The pressure monitor that the temperature monitor 340 being connected with flue-gas temperature transmitter 330 is connected with flue gas pressures transmitter 350
360 moisture monitors 380 being connected with smoke moisture transmitter 370.
Data processing includes the data acquisition unit 410, the system control interface 420 that are sequentially connected with telecommunication system 400
With system control process device 430, remote communication interface 440, A/D interfaces are provided with system control process device 430
450th, printer 460 and display 470；System control process device 430 is an industrial computer, and industrial computer has 2
Individual Intel Duo Processors, 19 cun of flat-screen CRT monitors, 250G hard disks, 1G internal memories, 2 standard serials mouthful and 1 standard parallel
Mouthful.
General principle of the invention, principal character and advantages of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not limited to the above embodiments, simply explanation described in above-described embodiment and specification this
The principle of invention, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appending claims and together
Defined Deng thing.
Claims (8)
1. a kind of continuous on-line monitoring system of flue gas, including the particulate solid continuous monitoring subsystem in chimney or flue
System, gaseous contaminant continuous monitoring subsystem and Gas Parameters continuous monitoring subsystem, particulate solid continuous monitoring
System, gaseous contaminant continuous monitoring subsystem and Gas Parameters continuous monitoring subsystem all with data processing and telecommunication system
System is connected；
Characterized in that, the particulate solid continuous monitoring subsystem includes emission measurement instrument；
The gaseous contaminant continuous monitoring subsystem include be sequentially connected with blowback and heating sampling probe, heating tape,
Flue gas pretreatment system and infrared gas analyser, verification Standard Gases are connected with the flue gas pretreatment system side, described
Gas sampling, blowback, filter dirt, drainage of gaseous contaminant continuous monitoring subsystem etc. are controlled by PLC control system；
The Gas Parameters continuous monitoring subsystem includes the flow monitoring instrument and the flue-gas temperature that are connected with flue gas flow rate transmitter
The pressure monitor that the connected temperature monitor of transmitter is connected with flue gas pressures transmitter is connected with smoke moisture transmitter
Moisture monitor；
The data processing includes the data acquisition unit, system control interface and the system control that are sequentially connected with telecommunication system
Processing unit.
2. a kind of continuous on-line monitoring system of flue gas as claimed in claim 1, it is characterised in that the flue gas pretreatment system
Including the blowback control cabinet, primary filter, condenser and the accurate filter that are sequentially connected, the primary filter, condensation
Device side is connected with drainage system；The blowback control cabinet is arranged between 2 heating tapes, the blowback control cabinet,
Drainage system side is provided with compressed air input port, and manual ball valve is provided near the compressed air input port to compression
Air is controlled.
3. a kind of continuous on-line monitoring system of flue gas as claimed in claim 1, it is characterised in that the system control process dress
It is set to an industrial computer；Remote communication interface, A/D interfaces, printer are provided with the system control process device
And display.
4. a kind of continuous on-line monitoring system of flue gas as claimed in claim 1, it is characterised in that the sampling probe is by sampling
Pipe, main cavity, heating isothermal body, ceramic high-precision filter, the letter of mounting flange set, protective cover, temperature controller part composition；It is described
Heating tape is every meter of heat tracing of invariable power, and its heat tracing temperature is controlled by the temperature controller；The infrared gas analyser is described
The core component of gaseous contaminant continuous monitoring subsystem, for analyzing SO2,NOX,O2Deng gas.
5. a kind of continuous on-line monitoring system of flue gas as claimed in claim 3, it is characterised in that the industrial computer has
2 Intel Duo Processors, 19 cun of flat-screen CRT monitors, 250G hard disks, 1G internal memories, 2 standard serials mouthful and 1 standard parallel
Mouthful.
6. a kind of continuous on-line monitoring system of flue gas as claimed in claim 4, it is characterised in that the blowback control cabinet is powered
Power supply is adsorbed by PLC control system control, the primary filter by strainer screen, can be with Chalk-dust filtering and a small amount of water
Point, the accurate filter precision is up to 0.1-0.2 microns；The sampling pipe external diameter is 25mm, a length of 500mm, the installation
Flange sleeve letter external diameter is 70mm, a length of 300mm, the temperature controller and the main body integrated design of the sampling probe.
7. a kind of continuous on-line monitoring system of flue gas as claimed in claim 6, it is characterised in that the case of the blowback control cabinet
Body for white and formed by steel plastic-spraying, the primary filter by polytetrafluoroethylmaterial material, joint by PVDF materials are made, institute
The casing of condenser is stated for white and is formed by steel plastic-spraying, the drainage system liquid contact portion is all corrosion resistant non-gold
Category material, the accurate filter is made up of PVDF materials, filter core is ceramic diamond spar.
8. a kind of continuous on-line monitoring system of flue gas as claimed in claim 4, it is characterised in that the sampling probe and sample
The part of gas contact is all processed into using 316 stainless steel materials, and the protective cover and temperature controller case use LF21 antirusts
Aluminium sheet is manufactured；The heating tape sampling pipe is polyfluortetraethylene pipe, and insulating sections are that silica wool, crust are silastic material systems
Into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710094081.XA CN106840264A (en) | 2017-02-21 | 2017-02-21 | A kind of continuous on-line monitoring system of flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710094081.XA CN106840264A (en) | 2017-02-21 | 2017-02-21 | A kind of continuous on-line monitoring system of flue gas |
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| Publication Number | Publication Date |
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| CN106840264A true CN106840264A (en) | 2017-06-13 |
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| CN201710094081.XA Pending CN106840264A (en) | 2017-02-21 | 2017-02-21 | A kind of continuous on-line monitoring system of flue gas |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107132318A (en) * | 2017-06-16 | 2017-09-05 | 合肥固泰自动化有限公司 | A kind of stationary source VOC on-line monitoring systems |
| CN107505171A (en) * | 2017-08-10 | 2017-12-22 | 安徽省碧水电子技术有限公司 | A kind of smoke collecting probe and its acquisition system |
| CN107748214A (en) * | 2017-11-20 | 2018-03-02 | 华电智控（北京）技术有限公司 | The pretreatment of volatile organic matter and analysis system |
| CN107957405A (en) * | 2018-01-11 | 2018-04-24 | 太原海纳辰科仪器仪表有限公司 | A kind of portable infrared flue gas analyzer |
| CN108507918A (en) * | 2018-06-15 | 2018-09-07 | 山西省环境科学研究院 | Minimum discharge flue gas particles concentration on-line monitoring device and method |
| CN109603445A (en) * | 2019-01-07 | 2019-04-12 | 哈尔滨工业大学 | Vapor fast eliminating system and method in a kind of flue gas |
| CN109883777A (en) * | 2019-04-10 | 2019-06-14 | 盛守祥 | Trace organic substance sample continuous collecting apparatus in a kind of flue gas |
| CN110360092A (en) * | 2019-07-17 | 2019-10-22 | 闽南理工学院 | A kind of system and method excluding oil seal type oil-sealed rotary pump tail gas condensing water |
| CN111896050A (en) * | 2020-07-14 | 2020-11-06 | 江苏云聚汇科技有限公司 | Flue gas online monitoring control system and control method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107132318A (en) * | 2017-06-16 | 2017-09-05 | 合肥固泰自动化有限公司 | A kind of stationary source VOC on-line monitoring systems |
| CN107505171A (en) * | 2017-08-10 | 2017-12-22 | 安徽省碧水电子技术有限公司 | A kind of smoke collecting probe and its acquisition system |
| CN107748214A (en) * | 2017-11-20 | 2018-03-02 | 华电智控（北京）技术有限公司 | The pretreatment of volatile organic matter and analysis system |
| CN107957405A (en) * | 2018-01-11 | 2018-04-24 | 太原海纳辰科仪器仪表有限公司 | A kind of portable infrared flue gas analyzer |
| CN108507918A (en) * | 2018-06-15 | 2018-09-07 | 山西省环境科学研究院 | Minimum discharge flue gas particles concentration on-line monitoring device and method |
| CN109603445A (en) * | 2019-01-07 | 2019-04-12 | 哈尔滨工业大学 | Vapor fast eliminating system and method in a kind of flue gas |
| CN109603445B (en) * | 2019-01-07 | 2021-06-15 | 哈尔滨工业大学 | System and method for quickly removing water vapor in flue gas |
| CN109883777A (en) * | 2019-04-10 | 2019-06-14 | 盛守祥 | Trace organic substance sample continuous collecting apparatus in a kind of flue gas |
| CN110360092A (en) * | 2019-07-17 | 2019-10-22 | 闽南理工学院 | A kind of system and method excluding oil seal type oil-sealed rotary pump tail gas condensing water |
| CN111896050A (en) * | 2020-07-14 | 2020-11-06 | 江苏云聚汇科技有限公司 | Flue gas online monitoring control system and control method thereof |
| CN111896050B (en) * | 2020-07-14 | 2021-04-06 | 江苏云聚汇科技有限公司 | Type limiting method of smoke measuring instrument |
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