CN102778445B - Intelligent analyzer and detection method for standard state dry basis - Google Patents
Intelligent analyzer and detection method for standard state dry basis Download PDFInfo
- Publication number
- CN102778445B CN102778445B CN201210299927.0A CN201210299927A CN102778445B CN 102778445 B CN102778445 B CN 102778445B CN 201210299927 A CN201210299927 A CN 201210299927A CN 102778445 B CN102778445 B CN 102778445B
- Authority
- CN
- China
- Prior art keywords
- flue gas
- sensor
- gas
- unit
- concentration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses an intelligent analyzer and a detection method for a standard state dry basis, and belongs to the field of gas detection analyses. The intelligent analyzer comprises a sensing and measuring unit, a heating control unit, a data collecting and processing unit and an output display communication unit, wherein the heating control unit and the sensing and measuring unit are positioned in a same closed cavity chamber; and the peripheries of the heating control unit and the sensing and measuring unit are separated from the data collecting and processing unit and the output display communication unit through a heat insulating plate. The detection method comprises the following steps of: demarcating zero gas, and detecting sample gas, so as to obtain a wet basis volume value under a nonstandard state of measured gas; measuring parameters of fume, and changing the parameters into volume values under a standard state and converting to be a value of a standard state dry basis concentration. According to the intelligent analyzer and the detection method, the gaseous pollutant standard state dry basis concentration is directly output, the service life of the analyzer is prolonged, and functions of diagnosing the running state of the analyzer can in real time can be realized; and the detection method solves the problems that the condition that measured values of the analyzer can meet the China environmental standard, the condition that an instrument is easy to damage under a complicated working condition, and the reality reliability of the measured values of the analyzer are ensured, and the like can be solved.
Description
Technical field
The present invention relates to the automatic monitor for continuously device of the multicomponent gas of discharge of pollutant sources flue gas, be specially a kind of mark state butt intelligent analytical instrument and detection method.
Background technology
Environmental Protection in China standard defines the content that the concentration of pollutant in flue gas is pollutant in dry flue gas under standard state, as " thermal power plant's air pollution emission standard " regulation " flue gas is 273K in temperature; state when pressure is 101325Pa; be called for short ' mark state ', and in this standard, the pollutant of defined all refers to the numerical value of dry flue gas under standard state ".
Fume component analysis is a complicated problem involving multiple subject, not only needs to ensure detection of exhaust gas compositions precision and stability, also needs the impact considering that various factors is analyzed flue gas composition.Consider the impact that the factors such as water capacity in flue gas, temperature, particle detect flue gas composition, flue gas needed to carry out pre-service to it before entering flue gas analyzer, reduced the impact that the factors such as water capacity, temperature, particle detect flue gas composition as much as possible.Due to domestic to pretreatment unit research starting relatively evening, even do not form the Quality Control requirement of pretreatment unit that is complete, that quantize, in causing practical operation to run, cannot quantitative evaluation pretreatment unit to flue gas effect.Particularly in flue gas after pretreatment, the size of water capacity affects huge on pollutant monitoring accuracy and analysis meter inherently safe.
(CEMS in exhaust system monitored continuously by flue gas analyzer, Continuous Emission Monitoring System) core component, it is appraise and decide the important evidence of the total amount of pollutant to gaseous contaminant monitoring result, is the technical support that total amount reduces discharging.Existing flue gas analyzer is just directly measured the component to be measured in flue gas after pre-service, do not consider that in flue gas, moisture is on the impact of measurement result, have the following disadvantages: (1) flue gas analyzer long term monitoring contains the flue gas of a certain amount of moisture that non-quantized is measured, survey the impact that pollutant levels do not consider humidity of flue gas, finally affect the accuracy of pollutant discharge amount; (2) corrosive gas in flue gas is as SO
2, NOx meet water generate acidic materials, to flue gas analyzer self produce harm, cause measuring error and shorten service life of equipment; (3) do not consider the impact of instrumentation temperature on measurement result, be difficult to ensure to measure under constant temperature; (4) lack the whether normal diagnosis capability of flue gas analyzer running status, as the corrosion of gaseous contaminant sensing measurement room is still considered as normal, cause measuring result error.
Summary of the invention
1. invent the technical matters that will solve
The gaseous contamination substrate concentration in flue gas can only be monitored for existing flue gas analyzer, flue gas gaseous contaminant mark state butt concentration to be measured cannot be recorded in real time, lack many deficiencies such as intelligent diagnostics function such as monitoring equipment running state recognition, fault alarms, the invention provides a kind of mark state butt intelligent analytical instrument and detection method, have and directly can export gaseous contaminant mark state butt concentration, extend analysis meter serviceable life, to functions such as analyser running status real-time diagnosis.Solve and how to guarantee that instrument measurement value meets Chinese environmental protection standard, how to avoid the problems such as instrument under complex working condition is fragile, true and reliable property how to guarantee analysis meter measured value.
2. technical scheme
A kind of mark state butt intelligent analytical instrument comprises sensing and measuring unit, heat control unit, data acquisition process unit and output display communication unit, heat control unit and sensing and measuring unit are in same airtight chamber, surrounding is by separating with thermal insulation board and data acquisition process unit and output display communication unit, to prevent thermal loss, and ensure that sensing and measuring unit work at a constant temperature, sensing is connected with data acquisition process unit by Signal transmissions with measuring unit, output signal is transferred to output display communication unit by data acquisition process unit simultaneously.
Described sensing and measuring unit comprise flue gas drainage filtration unit, flue gas multiparameter measuring device and gaseous contaminant sensing measurement room, the gas outlet of flue gas drainage filtration unit is connected with the air intake opening of flue gas multiparameter measuring device, and the gas outlet of flue gas multiparameter measuring device is connected with the air intake opening of gaseous contaminant sensing measurement room.
Smoke mixture to be measured after pretreatment unit enters analyser through flue gas drainage filtration unit, flue gas drainage filtration unit is the device being provided with water filtration membrane, can stop that the aqueous water in flue gas passes through, prevent aqueous water from entering the sensor internal of gaseous contaminant sensing measurement room and causing corrosion, in flue gas, other gas pollutants are by water filtration membrane;
Flue gas multiparameter measuring device is distributed in same measurement mechanism by integrated to humidity sensor, the first temperature sensor and pressure sensor integrated, can Simultaneously test humidity of flue gas, temperature, pressure three parameter, both integral layout was optimized, reduce costs, also consider the cross influence between different parameters, prevent the fusion of different measuring system from bringing larger systematic error.By the optimal design-aside between sensor, measure humidity of flue gas, deduct the interference of steam to other component gas to be measured, improve sensitivity and the accuracy of flue gas analyzer detection, accurately converted out the mark state butt concentration of gaseous contaminant to be measured in conjunction with the parameter such as flue-gas temperature, flue gas pressures by software analysis computing system;
The sensor of described gaseous contaminant sensing measurement room is microfluidic sensor, and described microfluidic sensor is SO
2sensor, NO sensor, NO
2sensor, CO sensor or O
2any two or more combination of sensor, series system is adopted different sensors to be integrated, the gas outlet of flue gas multiparameter measuring device is connected with the air intake opening of first sensor by the air intake opening of gaseous contaminant sensing measurement room, gas outlet between adjacent sensors and air intake opening are interconnected, and the gas outlet of last sensor is connected with intelligent flue gas analyser gas outlet.Portion gas can adopt double-range analytical technology, as SO
2adopt height double-range, both ensured the high sensitivity of analyser, and expanded range of dynamic measurement again.
Described heat control unit comprises heating module, the second temperature sensor and heat abstractor, heating module inserts heat sink interior, by heat transfer by spread heat to heat abstractor, heat abstractor can add strong convection and be distributed in confined space by even heat, second temperature sensor is contained in airtight chamber's other end, the temperature of real-time induction sealing chamber also feeds back to heating module, realizes the control of temperature.Heat control unit, sensing and measuring unit are in same airtight chamber, surrounding is by separating with thermal insulation board, adopt the temperature closed loop method that the heat effect of heating module combines with the thermolysis of heat abstractor, guarantee that flue gas pre-service and measuring chamber and gaseous state pollutant measurement unit work under temperature constant state, improve the stability of flue gas analyzer self on the one hand, avoid on the other hand moisture condensation under low temperature, prevent steam and sour gas (as: SO to be measured
2, NOx) combine formed acidic materials, improve checkout equipment measure accuracy and corrosion resistivity.
Described data acquisition process unit comprises front end data acquisition circuit, signal amplifies conversion circuit, software Treatment Analysis system.Described front end data acquisition circuit, the analog or digital signal that pick-up transducers sends, signal amplifies conversion circuit carries out Hardware amplification filtering to the signal that collection comes, unification changes into digital signal, software Treatment Analysis system carries out digital filtering to the digital signal after conversion, and in conjunction with sensor output temperature, humidity, the pressure parameter in flue gas multiparameter measuring device, calculate bid state butt concentration, translation method is as follows:
In conjunction with environmental protection standard to the definition of mark state and the Ideal-Gas Equation, can realize directly exporting gaseous contaminant mark state butt concentration by following steps, be 1,000,000/volume number (in the air of 1,000,000 volumes the volume number of contained pollutant, ppm) with gaseous contaminant sensing measurement room output range unit be example:
The Ideal-Gas Equation:
The first step: measure each parameter of flue gas, the volume number of the tested pollutant of humidity of flue gas, temperature, pressure and flue gas;
Second step: be the volume number (ppm) under standard state by the volume number conversion of tested for flue gas pollutant;
3rd step: tested for flue gas under standard state pollutant unit is converted to mass concentration (mg/m by volumetric concentration
3);
4th step: by tested for flue gas under standard state pollutant wet basis concentration conversion for marking state butt concentration.
In conjunction with above-mentioned 4 steps, the convert formula of gaseous contaminant mark state butt is as follows:
Wherein, V
wthe volume number of tested pollutant in flue gas under-standard state, ppm;
V
xthe volume number of tested pollutant in flue gas under-off-rating, ppm;
T-flue-gas temperature, DEG C;
P-flue gas pressures, Pa;
C
wgaseous contaminant mass concentration under-standard state, mg/m
3;
M-gaseous contaminant molecular weight;
C
dthe concentration value of tested pollutant in dry flue gas under-standard state, mg/m
3;
Xsw-smoke moisture, percent by volume, %.
Described software Treatment Analysis system, 1. extracts each Measurement channel information, as humidity of flue gas, cigarette temperature, cigarette pressure, each component concentration to be measured etc., carries out Treatment Analysis to Information Monitoring, is mark state butt concentration by gaseous contaminant concentration conversion; 2. there is intellectual status diagnosis and alarm function, as flue-gas temperature to be measured lower than flue gas analyzer working temperature time, automatically start heating and heat sinking function, ensure that sensing and measuring unit work under temperature constant state; When humidity of flue gas to be measured presets moisture content values higher than flue gas analyzer, acidic materials are formed for avoiding low temperature moisture condensation and preventing moisture to be combined with corrosive gas, anticorrosion anti-condensation warning function will be started, ensure that flue gas analyzer is at normal water capacity operated within range, improve the serviceable life of accuracy and the equipment measured;
Described output display communication unit, comprise display screen, communication exports serial ports and communication unit, for the output signal of data acquisition process unit being converted to numerical value display or the general transmission signal of human-computer interaction interface, realize the concentration value, the display monitoring gaseous contaminant trend map over time that 1. show tested component in current flue gas; 2. data store and memory function, the concentration value of tested component in real-time storage flue gas, and automatically generate Pollution Source Monitoring component database, automatic discrimination concentration of component to be measured is with or without the situation of exceeding standard; 3. wire/wireless data-transformation facility, measures situation with the form of note or mail by flue gas analyzer equipment running status and smoke pollution to be measured and informs user, have remote monitoring function.
Mark a detection method for state butt intelligent analytical instrument, the steps include:
The first step: zero gas is demarcated: first mark state butt intelligent analytical instrument passes into zero gas, carries out zero point correction, by the intensity I of the light of reference cell when utilizing microfluidic sensor to record zero gas
ginsengwith the intensity I of the light by sample cell
0, the data acquisition process unit according to mark state butt intelligent analytical instrument draws the transmissivity T of monochromatic light by reference cell
ginseng=I
ginseng/ I
0.Described microfluidic sensor adopts miniflow pneumatic principle, and have inside and outside two air chambers, inside is absorption chamber, outside for compensating air chamber, is provided with platinum filament and pneumatic pyroelectric detector in passage very thin between inside and outside air chamber.Microfluidic sensor described in this device is the various gaseous contaminant sensors in gaseous contaminant sensing measurement room, as SO
2sensor, NO sensor.
Second step: sample gas detects: mark state butt intelligent analytical instrument passes into sample gas, carry out normal operation detection, recorded the intensity I of the light after by sample cell by microfluidic sensor, then go out the transmissivity T=I/I of monochromatic light by sample cell by software Treatment Analysis system-computed in mark state butt intelligent analytical instrument
0;
3rd step: wet basis volume number under acquisition measurement gas off-rating: by formula Vx=(logT/logT
ginseng) V
ginseng, obtained by software Treatment Analysis system and treat test sample gas gas concentration value Vx;
4th step: measure each parameter of flue gas, sample gas is by behind flue gas measuring multiple parameters chamber, flue gas measuring multiple parameters chamber is by the temperature of output detected sample gas, pressure and water capacity, sample gas enters gaseous contaminant measuring chamber, in gaseous contaminant measuring chamber, each gaseous contaminant sensor carries out detection output sample gas product to sample gas, as SO2 sensor exports SO2 volume number, NO sensor exports NO volume number (under off-rating wet basis volume number) (under off-rating wet basis volume number);
5th step: be the volume number (ppm) under standard state by the volume number conversion of tested for flue gas pollutant;
6th step: tested for flue gas under standard state pollutant unit is converted to mass concentration (mg/m by volumetric concentration
3);
7th step: by tested for flue gas under standard state pollutant wet basis concentration conversion for marking state butt concentration.
3. beneficial effect
Mark state butt intelligent analytical instrument device structure of the present invention is optimized, there is the features such as structure is simple, portable, extensibility, in measurement result, prevent from achieving beneficial effect in flue gas condensing extension device serviceable life etc.:
(1) organically combine based on flue gas moisture technology and gaseous contaminant sensing measurement technology, directly can export gaseous contaminant mark state butt concentration, meet Environmental Protection in China requirement, avoid the monitoring equipment that typical measuring arrangements may need multiple independent operating simultaneously, decrease systematic measurement error;
(2) there is equipment running status intelligent diagnostics function, according to flue gas composition change to be measured adjustment function of temperature control and anticorrosion anti-condensation early warning automatically, guarantee equipment working temperature constant, and avoid moisture condensation and be combined with corrosive gas and form acidic materials, effectively prevent equipment from damaging from acid liquid corrosion, not only extend service life of equipment, also ensure that the accuracy of measurement data;
(3) data store and memory function, automatically generate component database to be measured, and automatic discrimination exceeds standard situation, decreases the workload of field personnel;
(4) adopt remote monitoring technology of Internet of things, with the mode of intelligence transmission such as note, mail, equipment running status and pollutant monitoring result to be measured are informed user, can unattended function be realized.
Accompanying drawing explanation
Fig. 1 is the workflow diagram of mark state butt intelligent analytical instrument.
Fig. 2 is the topology layout figure that embodiment 1 marks state butt intelligent analytical instrument.
Fig. 3 is that embodiment 1 marks state butt intelligent analytical instrument structure schematic top plan view.
Wherein: the SO of 1 gaseous contaminant sensing measurement room
2sensor; 2 flue gas drainage filtration units; 3 flue gas multiparameter measuring devices; 4 data acquisition process unit; The oxygen sensor of 5 gaseous contaminant sensing measurement rooms; 6 display screens; 7 buttons; 8 cabinets; 9 mainboard fixed frames; 10 main circuit boards; 11 thermal insulation boards; 12 heat control unit; 13 communication units; 14 flaps; 15 gas connection fixed supports; 16 power supplys fix flap; 17 electric power systems; 18 attaching plugs; 19 air intake openings; 20 gas outlets; 21 communication serial ports.
Embodiment
Embodiment 1
Mark state butt intelligent analytical instrument workflow schematic diagram as shown in Figure 1, forming primarily of air path part and circuit part, is laterally air path part process flow diagram, is longitudinally circuit part (being mainly electric signal) schematic flow sheet.Process of gas path is that flue gas is successively by flue gas drainage filtration unit, the aqueous water that may generate in filtering gas circuit, again by flue gas multiparameter measuring device, sensor senses in flue gas multiparameter measuring device also transmits measuring tempeature, humidity and pressure signal, finally by gaseous contaminant sensing measurement room, record flue gas composition concentration signal.Circuit part flow process mainly comprises data acquisition process unit and output display communication unit, each sensor is gone out to deliver to signal by data acquisition process unit to carry out acquisition process analysis and is converted into mark state butt concentration value, and be transferred to output display communication unit, the concentration value measured is shown on a display screen, and exports with the form of 4 ~ 20mA or digital signal.Heat control unit and sensing and measuring unit are in same airtight measurement chamber, and surrounding thermal insulation board separates with data acquisition process unit, output display communication unit, prevents thermal loss, ensure that sensing and measuring unit work at a constant temperature.
Analyser structure as shown in Figure 2,3, comprises cabinet 8, the SO of gaseous contaminant sensing measurement room
2sensor 1, flue gas drainage filtration unit 2, flue gas multiparameter measuring device 3, data acquisition process unit 4, the oxygen sensor 5 of gaseous contaminant sensing measurement room, heat control unit 12, communication unit 13, electric power system 17, mainboard fixed frame 9, gas connection fixed support 15, parts such as attaching plug 18 grade.Wherein, cabinet 8 adopts aluminum alloy material cabinet, the SO of gaseous contaminant sensing measurement room
2sensor 1 is measure the SO of range at 0 ~ 5000ppm
2sensor, flue gas multiparameter measuring device 3 by the first temperature sensor, pressure transducer, humidity sensor is integrated is distributed in same device, the first temperature sensor is PT100; Data acquisition process unit comprises front end data acquisition circuit, signal amplifies conversion circuit, software Treatment Analysis system; Output display communication unit comprises display screen 6, button 7, communication unit 13, communication serial ports 21, and wherein display screen adopts 5 cun of display screens, and button 7 adopts touch key, and communication serial ports 21 is RS232 interface.
The SO of gaseous contaminant sensing measurement room
2sensor 1, flue gas drainage filtration unit 2, flue gas multiparameter measuring device 3, heat control unit 12, the oxygen sensor 5 of gaseous contaminant sensor measurement room, data acquisition process unit 4 are fixed on cabinet 8 base plate, the air inlet/outlet of communication unit 13, mark state butt intelligent analytical instrument is arranged on cabinet 8 rear panel, and display screen 6, button 7 are positioned on case front panel.The SO of gaseous contaminant sensing measurement room
2sensor 1, flue gas drainage filtration unit 2, flue gas multiparameter measuring device 3, heat control unit 12 is in same chassis space, with the oxygen sensor 5 of thermal insulation board 11 with gaseous contaminant sensing measurement room, data acquisition process unit 4 separates, communication unit 13 flap 14 separates with sensing and measuring unit, electric power system 17 is fixed flap 16 with power supply and is separated with sensing and measuring unit, this guarantees sensing and measuring unit, heat control unit 12, the air inlet/outlet of mark state butt intelligent analytical instrument forms closed space, the airtight method of temperature is adopted to guarantee that sensing and measuring unit work at a constant temperature.
1) air-channel system
Flue gas to be measured inputs to the air intake opening of flue gas drainage filtration unit 2 from air intake opening 19, flue gas drainage filtration unit 2 is for being provided with the device of water filtration membrane, inner water filtration membrane can stop that the aqueous water in flue gas passes through, prevent aqueous water from entering sensor internal and cause corrosion, flue gas is by water filtration membrane, the gas outlet of drainage filtration unit 2 is connected with the air intake opening of flue gas multiparameter measuring device 3, flue gas multiparameter measuring device 3 is by humidity sensor, temperature sensor and pressure transducer integrated in one, Simultaneously test humidity of flue gas, flue-gas temperature, flue gas pressures 3 parameters.The outlet of flue gas multiparameter measuring device 3 is by the SO of flexible pipe and gaseous contaminant sensing measurement room
2the air intake opening of sensor 1 is connected, the SO of gaseous contaminant sensing measurement room
2sensor 1 outlet is connected with the air intake opening of the oxygen sensor 5 of gaseous contaminant sensing measurement room, the gas outlet of the oxygen sensor 5 of gaseous contaminant sensing measurement room is connected with the gas outlet 20 of mark state butt intelligent analytical instrument, and whole component to be measured is completed rear evacuate air.
2) data acquisition process unit
Data acquisition process unit comprises front end data acquisition circuit, signal amplifies conversion circuit, software Treatment Analysis system, front end data acquisition circuit is made up of electric power system 17 and main circuit board 10, electric power system 17 provides all power supplys of front end system, comprises supplying digital circuits 5V switch voltage-stabilizing source, ± 15V simulates source of stable pressure; Main circuit board 10 is major parts of front end data acquisition circuit, adopts the conversion chip with 16 measuring accuracy.Signal amplifies conversion circuit and comprises the compositions such as the conversion of ultraviolet light photo signal and analog to digital conversion circuit, temperature-control circuit, oxygen sensor Acquisition Circuit, light source voltage stabilizing pole slow turn-on control circuit, and UV signal detecting plate mainly realizes UV signal detection, amplification, filtering and AD sampling.Sampled signal is delivered to software Treatment Analysis system and carries out Data Analysis Services, is converted to SO
2mark state butt concentration.Software Treatment Analysis system controls hardware system, data acquisition, process and concentration conversion, intelligent diagnostics monitoring equipment running status, the concentration value of real-time storage pollutant to be measured, and the concentration value of calculating is exported to display communication unit etc.
3) output display communication unit
Output display communication unit comprises the compositions such as display screen 6, button 7, communication unit 13, communication output serial ports 21, wherein display screen adopts 5 cun of display screens, button 7 adopts touch key, and it is RS232 interface that communication exports serial ports 21, and output display communication unit can realize following function:
Presentation Function: show SO in current flue gas
2the mark state butt concentration value of component, display monitoring gaseous contaminant SO
2trend map over time;
Data store and memory function: the concentration value of tested component in real-time storage flue gas, and automatically generate Pollution Source Monitoring component database, automatic discrimination concentration of component to be measured is with or without the situation of exceeding standard;
Wireless data transmission function: with the form of note or mail, flue gas analyzer equipment running status and smoke pollution to be measured are measured situation and inform user, realize monitoring equipment remote monitoring.
Intelligent diagnostics and alarm function: in conjunction with data acquisition process unit, judge the health degree of monitoring equipment running status; When condensate water appears in gas circuit, automatically start alarm function, and cut-out stops gaseous contaminant sensing measurement room normally to work, and prevents sensor because of condensate water and SO
2corrosion and damage is caused in conjunction with production corrosive substance.
Subsidiary function: the management of measurement result inquiry, output, system operational parameters.
Embodiment 2
Structure is with embodiment 1, and difference is the SO marking state butt intelligent analytical instrument
2measurement range is 0 ~ 3000mg/m
3, SO to be measured
2sample gas concentration is 1500mg/m
3, concrete measuring process is as follows:
1, mark state butt intelligent analytical instrument power supply is connected;
2, demarcate:
(1) Zero calibration: the air intake opening 19 of zero gas with mark state butt intelligent analytical instrument is connected, passes through SO
2by the intensity I of the light of reference cell when sensor records zero gas
ginsengwith the intensity I of the light by sample cell
0, the data acquisition process unit according to mark state butt intelligent analytical instrument draws the transmissivity T of monochromatic light by reference cell
ginseng=I
ginseng/ I
0deng the measured value checking display screen 6 after 10 minutes, measured value is stabilized in 1ppm, and relative error is 0.03%, meets the requirement of the full scale drift error (≤± 2F.S%) of HJ/T76 " technical requirement of fixed pollution source smoke discharge continuous monitor system and detection method ".
(2) to work to the last minute demarcation: by full scale 80%(2400mg/m
3) SO
2calibrating gas passes into the air intake opening 19 of mark state butt intelligent analytical instrument, passes through SO
2by the intensity I of the light of reference cell when sensor records the gas of full scale 80%
fullwith the intensity I of the light by sample cell
0, the data acquisition process unit according to mark state butt intelligent analytical instrument draws the transmissivity T of monochromatic light by reference cell
full=I
full/ I
0, display screen 6 checks measured value; Check that the measured value of display screen 6 records reading after stable, reading is 2402mg/m
3, relative error, 0.06%, meets the requirement of the full scale drift error (≤± 2F.S%) of HJ/T76 " technical requirement of fixed pollution source smoke discharge continuous monitor system and detection method ".
SO to be measured is entered after demarcation terminates
2sample gas is measured.
3, SO
2sample gas detects:
(1) by SO to be measured
2sample gas passes into mark state butt intelligent analytical instrument air intake opening 19, and measured temperature, pressure, humidity three parameters for the treatment of test sample gas by flue gas measuring multiple parameters chamber, sample gas enters SO again
2sensor measures the intensity I by the light after sample cell, then goes out the transmissivity T=I/I of monochromatic light by sample cell by software Treatment Analysis system-computed in mark state butt intelligent analytical instrument
0;
4, SO to be measured is obtained
2sample gas mark state butt concentration: press formula below, directly obtain SO to be measured by software Treatment Analysis system
2gas mark state butt concentration value, on display screen 6, display measurement value is 1501mg/m
3.
Embodiment 3
Be integrated in same cabinet in a series arrangement by the sensor of multiple gaseous contaminant sensing measurement room, as SO2, NO, NO2, CO sensor combination in any, collocation, data acquisition process unit increases NO, NO
2, the acquisition channel of CO signal and concentration conversion, output display communication unit increases the functions such as the pollutant mark state butt kind of display, and monitoring equipment has stronger expansibility, and other apparatus structures are with embodiment 1.
Embodiment 4
SO before and after desulfurization to be monitored simultaneously
2during levels, due to SO in flue gas after desulfurization
2content is low, when single employing wide range sensor monitors low concentration gaseous pollutant, by the impact of measuring accuracy, do not detect pollutant when low concentration, display result is zero, is not inconsistent with actual pollutant levels, height two passages can be selected, both ensured the high sensitivity of analyser, and expanded range of dynamic measurement again, other structures of device are with embodiment 1.
Embodiment 5
Display screen adopts color touch screen, and display and keypress function in alternate embodiment 1, other structures of device are with embodiment 1.
Embodiment 6
Communication serial ports exports relevant information with various ways such as RS485, RS232,4 ~ 20mA simulating signals, and meet the needs of different users, other apparatus structures are with embodiment 1.
Claims (1)
1. mark a detection method for state butt intelligent analytical instrument, the steps include:
The first step: zero gas is demarcated: first mark state butt intelligent analytical instrument passes into zero gas, carries out zero point correction, by the intensity I of the light of reference cell when utilizing microfluidic sensor to record zero gas
ginsengwith the intensity I of the light by sample cell
0, the data acquisition process unit according to mark state butt intelligent analytical instrument draws the transmissivity T of monochromatic light by reference cell
ginseng=I
ginseng/ I
0;
Second step: sample gas detects: mark state butt intelligent analytical instrument passes into sample gas, carry out normal operation detection, recorded the intensity I of the light after by sample cell by microfluidic sensor, then go out the transmissivity T of monochromatic light by sample cell by software Treatment Analysis system-computed in mark state butt intelligent analytical instrument
sample=I/I
0;
3rd step: wet basis volume number under acquisition measurement gas off-rating: by formula Vx=(logT
sample/ logT
ginseng) V
ginseng, obtained by software Treatment Analysis system and treat test sample gas gas concentration value Vx;
4th step: measure each parameter of flue gas, the volume number of the tested pollutant of humidity of flue gas, temperature, pressure and flue gas;
5th step: be the volume number under standard state by the volume number conversion of tested for flue gas pollutant;
6th step: tested for flue gas under standard state pollutant unit is converted to mass concentration by volumetric concentration;
7th step: by tested for flue gas under standard state pollutant wet basis concentration conversion for marking state butt concentration
; Wherein, T is flue-gas temperature, and P is flue gas pressures, and M is gaseous contaminant molecular weight; X
swfor smoke moisture;
Described mark state butt intelligent analytical instrument, comprise sensing and measuring unit, heat control unit, data acquisition process unit and output display communication unit, described heat control unit and sensing and measuring unit are in same airtight chamber, surrounding is separated by thermal insulation board and data acquisition process unit and output display communication unit, sensing is connected with data acquisition process unit by Signal transmissions with measuring unit, output signal is transferred to output display communication unit by data acquisition process unit simultaneously, wherein said sensing and measuring unit comprise flue gas drainage filtration unit, flue gas multiparameter measuring device and gaseous contaminant sensing measurement room, the gas outlet of flue gas drainage filtration unit is connected with the air intake opening of flue gas multiparameter measuring device, the gas outlet of flue gas multiparameter measuring device is connected with the air intake opening of the sensor of gaseous contaminant sensing measurement room by the air intake opening of gaseous contaminant sensing measurement room, described flue gas multiparameter measuring device comprises humidity sensor, the first temperature sensor and pressure transducer, and described humidity sensor, the first temperature sensor and pressure sensor integrated are integrated to be distributed in same device, the sensor of described gaseous contaminant sensing measurement room is microfluidic sensor, and described microfluidic sensor is SO
2sensor, NO sensor, NO
2sensor, CO sensor or O
2any two or more combination of sensor, adopt series system by each sensor integration together, gas outlet and the adjacent sensors air intake opening of sensor are interconnected, and the gas outlet of last sensor is connected with mark state butt intelligent flue gas analyser gas outlet, described heat control unit comprises heating module, the second temperature sensor and heat abstractor, heating module inserts heat sink interior, second temperature sensor is contained in airtight chamber's other end, and the temperature of real-time induction sealing cavity space also feeds back to heating module, realizes the control of temperature, described data acquisition process unit comprises front end data acquisition circuit, signal amplifies conversion circuit, software Treatment Analysis system, described front end data acquisition circuit, the analog or digital signal that pick-up transducers sends, signal amplifies conversion circuit carries out Hardware amplification filtering to the signal that collection comes, unification changes into digital signal, software Treatment Analysis system carries out digital filtering to the digital signal after conversion, and in conjunction with sensor output temperature, humidity, the pressure parameter in flue gas multiparameter measuring device, calculate bid state butt concentration, described output display communication unit, comprises display screen, communication exports serial ports and communication unit, for the output signal of data acquisition process unit being converted to numerical value display or the general transmission signal of human-computer interaction interface, described flue gas drainage filtration unit is the device being provided with water filtration membrane, described software Treatment Analysis system, by extracting each Measurement channel humidity of flue gas, cigarette temperature, cigarette pressure, component concentration to be measured, carries out Treatment Analysis to Information Monitoring, is mark state butt concentration by gaseous contaminant concentration conversion, there is intellectual status diagnosis and alarm function simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210299927.0A CN102778445B (en) | 2012-08-21 | 2012-08-21 | Intelligent analyzer and detection method for standard state dry basis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210299927.0A CN102778445B (en) | 2012-08-21 | 2012-08-21 | Intelligent analyzer and detection method for standard state dry basis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102778445A CN102778445A (en) | 2012-11-14 |
| CN102778445B true CN102778445B (en) | 2015-07-15 |
Family
ID=47123428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210299927.0A Active CN102778445B (en) | 2012-08-21 | 2012-08-21 | Intelligent analyzer and detection method for standard state dry basis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102778445B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104391092A (en) * | 2014-12-12 | 2015-03-04 | 重庆市荣冠科技有限公司 | Multi-gas detection based gas inlet device |
| CN106970182A (en) * | 2017-04-21 | 2017-07-21 | 上海纳晶科技有限公司 | A kind of apparatus and method of on-line checking mixed gas concentration |
| CN108732141B (en) * | 2018-06-29 | 2021-01-05 | 深圳大学 | Method and device for measuring concentration of medical breathing carbon dioxide |
| CN109030740A (en) * | 2018-07-31 | 2018-12-18 | 扬中市南方矿用电器有限公司 | Nitrogen dioxide analyzer and measuring method |
| CN109507373B (en) * | 2018-12-28 | 2024-03-12 | 北京卓越信通电子股份有限公司 | Intelligent gas sensing detection method and sensing detection system applying same |
| CN114544536B (en) * | 2022-02-22 | 2024-06-07 | 青岛明华电子仪器有限公司 | Method for generating nitrogen oxide concentration calibration model |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1936995A (en) * | 2006-10-10 | 2007-03-28 | 江南大学 | Control for industrial smoke on-line monitoring system and data transmission system and method |
| CN101387616A (en) * | 2008-10-09 | 2009-03-18 | 聚光科技（杭州）有限公司 | Measurement method and apparatus for humidity in discharged flue gas |
| CN201233390Y (en) * | 2008-07-28 | 2009-05-06 | 宇星科技发展(深圳)有限公司 | Flue gas on-line continuous monitoring apparatus |
| CN201488986U (en) * | 2009-05-21 | 2010-05-26 | 北分图森(北京)科技发展有限公司 | Multi-component gas analyzer for continuously monitoring flue gas emission pollutants |
| CN202794032U (en) * | 2012-08-21 | 2013-03-13 | 南京埃森环境技术有限公司 | Standard state dry basis intelligent analyzer |
-
2012
- 2012-08-21 CN CN201210299927.0A patent/CN102778445B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1936995A (en) * | 2006-10-10 | 2007-03-28 | 江南大学 | Control for industrial smoke on-line monitoring system and data transmission system and method |
| CN201233390Y (en) * | 2008-07-28 | 2009-05-06 | 宇星科技发展(深圳)有限公司 | Flue gas on-line continuous monitoring apparatus |
| CN101387616A (en) * | 2008-10-09 | 2009-03-18 | 聚光科技（杭州）有限公司 | Measurement method and apparatus for humidity in discharged flue gas |
| CN201488986U (en) * | 2009-05-21 | 2010-05-26 | 北分图森(北京)科技发展有限公司 | Multi-component gas analyzer for continuously monitoring flue gas emission pollutants |
| CN202794032U (en) * | 2012-08-21 | 2013-03-13 | 南京埃森环境技术有限公司 | Standard state dry basis intelligent analyzer |
Non-Patent Citations (1)
| Title |
|---|
| 李进进.烟气排放连续监测系统(CEMS)及其在石化行业的应用.《传感器与通讯世界》.2009, * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102778445A (en) | 2012-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102778445B (en) | Intelligent analyzer and detection method for standard state dry basis | |
| CN201335967Y (en) | On-line monitoring system for emission of industrial fumes and flue gases | |
| CN101354394B (en) | Expiration nitric oxide detection device | |
| CN201811931U (en) | Oil smoke data acquisition device | |
| CN103033399B (en) | Atmospheric multiparameter transmitter for PM2.5 particulate matter monitor and use method thereof | |
| CN101303301A (en) | Flue gas powder dust and characteristic gas simultaneous on-line monitoring method and apparatus | |
| CN106769978B (en) | Fermentation tank tail gas in-line analyzer | |
| CN104457852A (en) | On-line monitoring system for greenhouse gas emission of fixed combustion source | |
| CN202735325U (en) | Handheld suction type volatile gas detector | |
| CN203259519U (en) | Pollution source flue gas automatic monitoring system | |
| CN206362601U (en) | A kind of gas-detecting device | |
| CN206725432U (en) | A kind of non-spectral formula infrared gas sensor for how regional and more gasmetries | |
| CN205898730U (en) | Multichannel polytypic sensor capability test system | |
| CN206020318U (en) | A kind of gas dew point analytical equipment | |
| CN110187055A (en) | A kind of factory's circle type monitor between different malodor source producers | |
| CN108956529A (en) | For comparing the portable NH of monitoring3, HCl analysis system | |
| CN104062409B (en) | Intelligence soot gas analyzes method and apparatus | |
| CN202794032U (en) | Standard state dry basis intelligent analyzer | |
| CN201251547Y (en) | Synchronous online monitor device of flue dust and special gas | |
| CN100561195C (en) | The non-disperse infrared spectrum determination method and the device that are suitable for wide environmental temperature range | |
| CN112033865A (en) | Gas detection system and detection method | |
| CN205229042U (en) | Portable normal position UV spectrum flue gas analyzer | |
| CN213455605U (en) | Continuous monitoring system for smoke emission | |
| CN109765275A (en) | A kind of method, apparatus of outdoor quick online detection crude oil hydrogen sulfide content | |
| KR20130029868A (en) | Continuous water vapor content measurement system of stack gas emissions |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 210042, Jiangsu province Nanjing Xuanwu Avenue 699-8 Xu Zhuang Software Park Development Zone 3, 1 Patentee after: Nanjing Assen Environmental Technology Co., Ltd. Address before: 210042, room 3, building 699-8, Xuanwu Avenue, Xuanwu District, Jiangsu, Nanjing, 102 Patentee before: Nanjing Assen Environment Technology Co., Ltd. |