CN108801718A - A kind of tail gas on-line monitoring system peculiar to vessel - Google Patents

A kind of tail gas on-line monitoring system peculiar to vessel Download PDF

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Publication number
CN108801718A
CN108801718A CN201810629575.8A CN201810629575A CN108801718A CN 108801718 A CN108801718 A CN 108801718A CN 201810629575 A CN201810629575 A CN 201810629575A CN 108801718 A CN108801718 A CN 108801718A
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CN
China
Prior art keywords
gas
cabinet
tail gas
monitoring
vessel
Prior art date
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Pending
Application number
CN201810629575.8A
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Chinese (zh)
Inventor
董家新
古杨
王胤
刘慧光
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Hubei Summit Ship Technology Co Ltd
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Hubei Summit Ship Technology Co Ltd
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Priority to CN201810629575.8A priority Critical patent/CN108801718A/en
Publication of CN108801718A publication Critical patent/CN108801718A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/22Devices for withdrawing samples in the gaseous state
    • G01N1/2202Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
    • G01N1/2205Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/22Devices for withdrawing samples in the gaseous state
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/22Devices for withdrawing samples in the gaseous state
    • G01N1/2247Sampling from a flowing stream of gas
    • G01N1/2252Sampling from a flowing stream of gas in a vehicle exhaust
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01Arrangements or apparatus for facilitating the optical investigation
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/33Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultra-violet light
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infra-red light
    • G01N21/3504Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infra-red light for analysing gases, e.g. multi-gas analysis
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D27/00Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
    • G05D27/02Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/22Devices for withdrawing samples in the gaseous state
    • G01N2001/2282Devices for withdrawing samples in the gaseous state with cooling means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01Arrangements or apparatus for facilitating the optical investigation
    • G01N2021/0106General arrangement of respective parts
    • G01N2021/0112Apparatus in one mechanical, optical or electronic block
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N2021/3129Determining multicomponents by multiwavelength light

Abstract

The present invention relates to a kind of tail gas on-line monitoring systems peculiar to vessel, including sequentially connected sampler, heat tracing pipe, gas treatment cabinet, buffer gas analysis cabinet and control host, and sampler connects flue, for being sampled to tail gas in flue;The tail gas sample that heat tracing pipe is used to arrive samplers sample is kept the temperature;Gas treatment cabinet is used to condense the vapor in gas and dust-filtering, including water vapor condenser, filter and monitoring device;Buffer gas is analyzed cabinet and is used for being sent to control host, including analysis cabinet shell, analyzer and the damping device for gas analysis cabinet entirety and analyzer damping by gas treatment cabinet treated gas test, and by test result;The test result that control host is used to receive Analysis of Vibration Reduction cabinet to tail gas, and this ship tail gas test result is analyzed whether within the scope of emission compliance.The tail gas on-line monitoring system peculiar to vessel of the present invention can modularization, reduce volume, good damping result, and can aboard ship carry out high precision measurement.

Description

A kind of tail gas on-line monitoring system peculiar to vessel
Technical field
The invention belongs to technical field of environment protection equipment, more specifically, belonging to technical field of air pollution control, and are related to one Kind tail gas on-line monitoring system peculiar to vessel.
Background technology
China is an inland water transport resource than more rich country.By the end of the year 2013, China possesses transport ship on water 17.26 ten thousand, oceangoing ship, 2.44 hundred million tons of net deadweight.Global ten Ports, China occupy eight seats, handling capacity account for about the whole world four/ One.Problem of environmental pollution caused by Shipping becomes increasingly conspicuous.According to measuring and calculating, national ship SO2 emissions in 2013 are about The 8.4% of national total emission volumn is accounted for, nitrogen oxide emission accounts for 11.3%.It is influenced maximum to be port city by Pollution From Ships, Followed by rivers bank city.Under this overall background, the engine design of more clean environment firendly uses low-sulfur oil and vent gas treatment System becomes following developing direction.And associated exhaust emissions and monitoring system requirements also propose in succession.
The premise of pollutant emission is composition and content it is to be understood that pollutant in control ship flue gas, and ship flue gas is arranged Put the measurement of on-line analysis system energy real-time online, testing result can find that is occurred during ship flue gas emission asks in time Topic, to take timely measure, to reduce the generation of major pollution incident.It is monitored at present for the tail gas of pollutant emission on the bank System begins to use in industries such as electric power, petrochemical industry, diesel engine manufacture tests, but the exhaust emissions that bank base uses is supervised online Examining system often takes cabinet-type, and volume is big, weight weight, and anti-seismic performance is relatively weak.But space is with respect to bank base environment on ship For want it is narrow very much;Simultaneously because ship acc power is big so that strongly, temperature change is violent for the vibration on ship, and tail gas is not Stablize.
So miniaturization, be suitble to the on-line monitoring system of marine diesel oil tail gas, due to facing marine diesel oil tail gas Temperature change is big, tail gas is unstable, narrow space, vibrates the reasons such as strong, fails to use always.
Invention content
For the technical problems in the prior art, the object of the present invention is to provide a kind of tail gas peculiar to vessel to supervise online Examining system, this system can modularization, reduce volume, good damping result, and can aboard ship carry out high precision measurement.
To achieve the above object, the present invention is achieved by the following technical solutions:
A kind of tail gas on-line monitoring system peculiar to vessel, the system comprises sequentially connected sampler, heat tracing pipe, gas treatments Cabinet, buffer gas analysis cabinet and control host;
The sampler connects flue, for being sampled to tail gas in flue;
The heat tracing pipe by the collected tail gas sample of sampler for keeping the temperature and maintaining in certain temperature range;
The gas treatment cabinet is used to condense the vapor in gas and dust-filtering, including water vapor condenser, mistake Filter and monitoring device;The gas treatment cabinet connects switch board, the gas that the switch board is monitored and fed back by monitoring device Body handles the real-time physical parameter in cabinet to control each electronic control unit in gas treatment cabinet;
Buffer gas analysis cabinet is used for by gas treatment cabinet, treated that gas is tested, and will test knot Fruit is sent to control host;The buffer gas analysis cabinet includes analysis cabinet shell, analyzer and damping device;The damping dress It sets for gas analysis cabinet entirety and analyzer damping;The analyzer includes the ultraviolet monitoring that ultraviolet light is sent out to monitoring gas Channel and the infrared monitoring channel that infrared light is sent out to monitoring gas;
The test result that the control host is used to receive Analysis of Vibration Reduction cabinet to tail gas, and analyze this ship tail gas test knot Whether fruit is within the scope of emission compliance.
Further, the sampler includes sampling probe, flowmeter, pressure sensor and temperature sensor;The stream Gauge, pressure sensor and temperature sensor are arranged at the output end of sampling probe, and pressure sensor and temperature sensor connect Connect switch board.
Further, the system also includes purge units, and the purge unit connects gas treatment cabinet, for shutting down When maintain pipeline pressure, prevent sampler port block;The purge unit includes magnetic-type electrical contact pressure gauge, purge gass Source, purging gas circuit, filter and two-position two-way solenoid valve.
Further, the gas treatment cabinet further includes sampling pump, sampling pump setting condenser and filter it Between, for keeping gas flow in entire gas circuit.
Further, the switch board is also associated with input equipment and output equipment, and the input equipment is used for control Cabinet input information, the output equipment are used for the result of output controlling cabinet.
Further, the system also includes temperature conditioning unit, the temperature conditioning unit connection buffer gas analyzes cabinet, the temperature Control unit is used to monitor the temperature inside buffer gas analysis cabinet.
Beneficial effects of the present invention:
(1) advantages of simple is arranged in tail gas on-line monitoring system peculiar to vessel provided by the invention, and the degree of modularity is high, integrated level Height, assembly is convenient, is easily assembled and meets different use spaces, can meet most of scenes peculiar to vessel.
(2) sampler energy real-time control flow of the invention, the heat tracing pipe after sampler can regulate and control tail gas sample temperature, make The gas of entrance can maintain desired flow and temperature so that the present invention, which not only has, assembles simple characteristic, but also makes Into test section gas evenly, temperature change smaller, it is ensured that test result is more acurrate.
(3) monitoring system of the invention is introduced into high precision infrared and ultraviolet two channels come monitor in tail gas corresponding gas at The content divided, the entire system that monitors have the characteristics that on-line calibration, measurement are accurate;The present invention is applied widely, is applicable not only to Tail gas on-line monitoring peculiar to vessel, it may also be used for other need anti-vibration, high precision measurement scene, and the gas inspection being easily affected by temperature It surveys.
Description of the drawings
Fig. 1 is the architecture principle figure of tail gas on-line monitoring system peculiar to vessel provided by the invention;
Fig. 2 is the structural schematic diagram that tail gas on-line monitoring system is used in embodiment 1;
Fig. 3 is the structural schematic diagram of gas treatment cabinet in embodiment 1;
Fig. 4 is the structural schematic diagram that buffer gas analyzes cabinet in embodiment 1.
Specific implementation mode
It shows that example illustrates certain embodiments of the present invention, and should not be construed as the model of the limitation present invention It encloses.Present disclosure can be improved from material, method and reaction condition simultaneously, all these improvement should all It falls within the spirit and scope of the present invention.
Fig. 1 shows the architecture principle of tail gas on-line monitoring system peculiar to vessel provided by the invention.As shown in Figure 1, the system Including sequentially connected sampler, heat tracing pipe, gas treatment cabinet, buffer gas analysis cabinet and control host;The sampler connects Cigarette receiving road, for being sampled to tail gas in flue, the output end of sampler connects heat tracing pipe;The heat tracing pipe will be for that will sample The collected tail gas sample of device keeps the temperature and maintains in certain temperature range, and the output end of heat tracing pipe introduces a gas into gas treatment Cabinet;The gas treatment cabinet is used to condense the vapor in tail gas sample and dust-filtering, including water vapor condenser, filtering Device and monitoring device;The gas treatment cabinet connects switch board, the gas treatment that switch board is monitored and fed back by monitoring device Real-time physical parameter in cabinet controls each electronic control unit in gas treatment cabinet, and the gas of gas treatment cabinet output end introduces damping Gas analysis cabinet;Buffer gas is analyzed cabinet and is used for treated that gas is tested by gas treatment cabinet, and will test knot Fruit is sent to control host;The buffer gas analysis cabinet includes analysis cabinet shell, analyzer and damping device;The damping dress It sets for gas analysis cabinet entirety and analyzer damping;The analyzer includes the ultraviolet monitoring that ultraviolet light is sent out to monitoring gas Channel and the infrared monitoring channel that infrared light is sent out to monitoring gas;The control host is for receiving Analysis of Vibration Reduction cabinet to tail gas Test result, and analyze this ship tail gas test result whether in the range up to standard.
Embodiment 1:
Fig. 2 gives a specific tail gas on-line monitoring system peculiar to vessel, wherein one end of sampler 1 is connect by flange Mouth discharges flue close proximity, heat tracing pipe 2 of the sampler other end connection with heater strip, after heat tracing pipe 2 with ship tail gas It is provided with gas treatment cabinet 3, gas treatment cabinet 3 is made of condenser, sampling pump, filter and monitoring device.Gas treatment cabinet 3 It is connect with purge unit 4, purge unit can maintain pipeline pressure during shutdown, prevent sampler port from blocking.Gas treatment Cabinet 3 connects with switch board 5 simultaneously, and switch board 5 reads the data of monitoring device, by showing that equipment 6 is shown, passes through input equipment The switch of 7 control pipers and power supply.Buffer gas analysis cabinet 8 is provided with after gas treatment cabinet 3, tail gas sample is through gas treatment cabinet Buffer gas, which is introduced, after 3 condensation filterings analyzes cabinet 8;It includes analysis cabinet shell, analyzer and damping device that buffer gas, which analyzes cabinet,; Wherein, analyzer, which is used, sends out the ultraviolet monitoring channel of ultraviolet light to monitoring gas and sends out the infrared of infrared light to monitoring gas Monitor channel.Buffer gas analyzes cabinet analysis result by data line transfer to host 10 is controlled on ship, tests the gas of completion It is discharged through outlet.Temperature in buffer gas analysis cabinet 8 is monitored by control temperature unit 9, can be reported more than setting temperature It is alert, protect analytical equipment.Host 10 is controlled on ship, analyzer test result is read by storage, confirm ship tail gas emissions data It is exceeded to alarm whether within the scope of emission compliance.
Sampler in wherein Fig. 2 includes sampling probe, flowmeter, pressure sensor and temperature sensor;Flowmeter, pressure Force snesor and temperature sensor are arranged at the output end of sampling probe, and pressure sensor and temperature sensor are all connected with control Cabinet.Sampling probe is anti-corrosion stainless steel sample probe, is made of probe tube, electric heating filter chamber two parts;Electric heating filter chamber is built-in Microporous ceramic filter, exterior electric heater composition, function are sampling and the first order coarse filtration for completing to be tested gas, mistake Precision 5um is filtered, is entire sampling pretreatment system prime filter;Electric heater is adjusted into trip temperature to entire adapter cavity, Reach as high as 180 DEG C including the temperature on ring flange, will not be down to dew point this guarantees the temperature of outer operating space hereinafter, to prevent Steam, steam condensation, absorption sulfide block pipeline.Flowmeter, pressure sensor and temperature sensor are to measure tail gas respectively Flow, pressure and temperature of the sample before entering sample treatment cabinet, convenient for the control of condensation, the filtering of next step.Wherein flow Amount can directly be read from flowmeter, and pressure and temperature can be shown in the display equipment of switch board.
The specific structure is shown in FIG. 3 for gas treatment cabinet, and the gas treatment cabinet 3 includes water vapor condenser 31, sampling Pump 32, filter 33 and monitoring device 34, water vapor condenser 31 connect with the output end of heat tracing pipe 2, steam condenser 31 Condensed water is discharged equipped with condensed water row's mouth.Tail gas sample introduces sampling pump 32, sampling pump after the condensation of steam condenser 31 For keeping gas flow in entire gas circuit.Sampling pump 32 connects with filter 33, and filter uses secondary filter core, passes through Tail gas is introduced into buffer gas after the monitoring flow of monitoring unit 34 and humidity and analyzes cabinet.Monitoring unit 34 connects with switch board 5, will The data monitored are passed to switch board, and switch board is to continue with work, alarm or power operation according to data validation.Switch board is also It is connected with input equipment and output equipment, the input equipment is used for switch board input information, and the output equipment is for defeated Go out the result of switch board.In present embodiment, input equipment is realized using button, and display equipment is realized using display.
For the sampling pipe for maintaining pipeline pressure or cleaning purging to block during shutdown, also set up in system of the invention Purge unit, purge unit connect gas treatment cabinet.Purge unit includes magnetic-type electrical contact pressure gauge, source purge gas, blows Scavenging road, filter and two-position two-way solenoid valve, the setting of magnetic-type electrical contact pressure gauge is in tail gas gas circuit gas treatment cabinet section, and two Position two-way electromagnetic valve is mounted on purge gass section, and purging gas circuit input terminal connects source purge gas, and purging gas circuit output end connects gas Body handles cabinet, and filter setting is in purging gas circuit input terminal.When shutdown or sampler line clogging, pressure is negative less than electric contact Table setting value is pressed, shows alarm, output alarm signal, aspiration pump is stopped at this time, system stalls, to ensure aspiration pump It is not burned.Two-position two-way solenoid valve is opened, and purge gass enter tail gas gas circuit gas treatment cabinet section, on the one hand can maintain pipeline On the other hand pressure is cleaned sampler, is purged, prevent sampler port from blocking.
Buffer gas analyzes the concrete structure of cabinet as shown in figure 4, gas analysis cabinet 8 includes analysis cabinet shell 81, analyzer 82 and for the damping device to gas analysis cabinet entirety and analyzer damping;Analyzer 82 include to monitoring gas send out it is ultraviolet The ultraviolet monitoring channel of light and the infrared monitoring channel that infrared light is sent out to monitoring gas.Since the absorption spectra of gas with various is not The same, therefore change the content that can calculate out each gas componant by the light intensity of the light of each band wavelength in light path.This prison Ultraviolet monitoring channel and infrared monitoring channel are respectively used to absorption of the monitoring tail gas sample to ultraviolet light and infrared light in examining system Degree obtains infrared signal and UV signal that tail gas sample absorbed, and it is each to calculate tail gas sample according to the optical signal of acquisition Component content.Damping device includes the rubber shock-absorbing interlayer 83 for closely coating analyzer 82, and the setting of rubber shock-absorbing interlayer 83 exists On shock-absorbing bracket 84, there are two level shock-absorbing foot 85, two level shock-absorbing foot 85 that can be between shock-absorbing bracket 84 and analysis cabinet shell 81 Spring shock absorption foot or rubber shock absorber foot.It can be spring shock absorption to have level-one shock-absorbing foot 86, level-one shock-absorbing foot 86 outside gas analysis cabinet Foot or rubber shock absorber foot.Gas analysis cabinet is further connected with control temperature unit 87.Control temperature unit 87 contains temperature sensing alarm, and temperature passes Feel the temperature in alarm real-time testing buffer gas analysis cabinet 8, overtemperature can alarm and export off signal.
The present embodiment tail gas on-line monitoring system peculiar to vessel before detecting tail gas sample, need measure background spectrum from And calibration instrument eliminates influence of the environmental change to measurement accuracy, needs to measure ultraviolet channel reference spectrum and infrared channel reference Standard spectrum of the spectrum respectively as two channels.
Measure background spectrum:Start monitoring system, the nitrogen for using samplers sample pure is measured as background as sample gas, protected The spectral signal that ultraviolet, infrared channel measures at this time is deposited, as background spectrum.
Measure ultraviolet channel reference spectrum:With to SO2, NO gases demarcated, start monitoring system, use samplers sample Pure SO2, NO gases demarcated as marked gas, for a period of time, the data shown on host to be controlled are steady for continuous collecting After fixed, standard spectrum of the absorption spectrum in ultraviolet channel as ultraviolet channel is preserved.
Measure infrared channel reference spectra:With to CO, CO2It is demarcated with hydrocarbon gas, starts monitoring system, With CO, CO of samplers sample normal concentration2And hydrocarbon gas, continuous collecting for a period of time, are shown on host to be controlled After the data stabilization shown, standard spectrum of the absorption spectrum as infrared channel of infrared channel is preserved.
After background spectrum and standard spectrum are measured, then by sampler into the gas circuit of entire monitoring system nitrogen charging Gas, nitrogen do not influence gas absorbance.Analyzer detects the ultraviolet signal that tail gas sample absorbed and infrared light letter Number, and exhaust gas component is calculated according to the background spectrum, ultraviolet channel reference spectrum, infrared channel reference spectra to prestore.
So the course of work of the invention is as follows:
(1) background spectrum is measured to which calibration instrument eliminates influence of the environmental change to measurement accuracy, measures ultraviolet channel The standard spectrum of reference spectra and infrared channel reference spectra respectively as two channels.
(2) sample detecting:
Sample gas is produced by sampler out of flue first, and sampled device enters gas after entering heat tracing pipe temperature control after once filtering Body handles cabinet, respectively by sample gas vapor condensation discharge, the solid particulate matters such as dust in sample gas are filtered out.Through gas It handles cabinet treated sample gas and introduces buffer gas and analyze cabinet, ultraviolet spectra is carried out to oxysulfide, the nitrogen oxides in sample gas Analysis, CO, CO2Infrared spectrum analysis is carried out with hydrocarbon, and according to background spectrum, the ultraviolet channel reference light to prestore Spectrum, infrared channel reference spectra calculate exhaust gas component.
Therefore, advantages of simple is arranged in on-line monitoring system of the invention, and the degree of modularity is high, and integrated level is high, and assembly is convenient, Different use spaces are easily assembled and are met, most of scenes peculiar to vessel can be met;Using sampler and heat tracing pipe, make the gas of entrance Temperature can maintain desired flow and temperature so that the present invention, which not only has, assembles simple characteristic, but also to enter The gas of test section evenly, temperature change smaller, it is ensured that test result is more acurrate;Introduce the infrared and ultraviolet gas point of high-precision Analyzer can realize more accurate measurement;The present invention is applied widely, is applicable not only to tail gas on-line monitoring peculiar to vessel, it may also be used for its He needs anti-vibration, high precision measurement scene, and the gas being easily affected by temperature.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (6)

1. a kind of tail gas on-line monitoring system peculiar to vessel, which is characterized in that the system comprises sequentially connected sampler, heat tracings Pipe, gas treatment cabinet, buffer gas analysis cabinet and control host;
The sampler connects flue, for being sampled to tail gas in flue;
The heat tracing pipe by the collected tail gas sample of sampler for keeping the temperature and maintaining in certain temperature range;
The gas treatment cabinet is used to condense the vapor in gas and dust-filtering, including water vapor condenser, filter And monitoring device;The gas treatment cabinet connects switch board, and the switch board passes through at monitoring device monitors and feeds back gas The real-time physical parameter in cabinet is managed to control each electronic control unit in gas treatment cabinet;
Buffer gas analysis cabinet is used for by gas treatment cabinet, treated that gas is tested, and test result is sent out It is sent to control host;The buffer gas analysis cabinet includes analysis cabinet shell, analyzer and damping device;The damping device is used In gas analysis cabinet entirety and analyzer damping;The analyzer includes the ultraviolet monitoring channel that ultraviolet light is sent out to monitoring gas With the infrared monitoring channel for sending out infrared light to monitoring gas;
The test result that the control host is used to receive Analysis of Vibration Reduction cabinet to tail gas, and analyze this ship tail gas test result and be It is no to be within the scope of emission compliance.
2. a kind of tail gas on-line monitoring system peculiar to vessel according to claim 1, which is characterized in that the sampler includes adopting Sample probe, flowmeter, pressure sensor and temperature sensor;The flowmeter, pressure sensor and temperature sensor are respectively provided with In the output end of sampling probe, pressure sensor connects switch board with temperature sensor.
3. a kind of tail gas on-line monitoring system peculiar to vessel according to claim 1, which is characterized in that the system also includes blow Unit is swept, the purge unit connects gas treatment cabinet, for maintaining pipeline pressure during shutdown, prevents sampler port stifled Plug;The purge unit includes magnetic-type electrical contact pressure gauge, source purge gas, purging gas circuit, filter and bi-bit bi-pass electromagnetism Valve.
4. a kind of tail gas on-line monitoring system peculiar to vessel according to claim 1, which is characterized in that the gas treatment cabinet is also Including sampling pump, the sampling pump is arranged between condenser and filter, for keeping gas flow in entire gas circuit.
5. a kind of tail gas on-line monitoring system peculiar to vessel according to claim 1, which is characterized in that the switch board is also connected with There are input equipment and output equipment, the input equipment to be used for switch board input information, the output equipment is controlled for exporting The result of cabinet processed.
6. a kind of tail gas on-line monitoring system peculiar to vessel according to claim 1, which is characterized in that the system also includes temperature Unit is controlled, the temperature conditioning unit connection buffer gas analyzes cabinet, and the temperature conditioning unit is for monitoring inside buffer gas analysis cabinet Temperature.
CN201810629575.8A 2018-06-19 2018-06-19 A kind of tail gas on-line monitoring system peculiar to vessel Pending CN108801718A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110031420A (en) * 2019-04-18 2019-07-19 广州嘉航通信科技有限公司 A kind of ship discharge telemetry system
CN110501300A (en) * 2019-09-23 2019-11-26 广西农业职业技术学院 A kind of automobile exhaust gas checking apparatus and detection method
CN110927334A (en) * 2019-11-08 2020-03-27 南京贺普科技有限公司 Low-power-consumption wireless solar type flue gas emission monitoring system
CN112946192A (en) * 2021-01-29 2021-06-11 中国原子能科学研究院 Gas analysis system

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