CN107044962A - Non- evacuation ultraviolet SO2、NO、NO2Polymeter - Google Patents
Non- evacuation ultraviolet SO2、NO、NO2Polymeter Download PDFInfo
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- CN107044962A CN107044962A CN201610082295.0A CN201610082295A CN107044962A CN 107044962 A CN107044962 A CN 107044962A CN 201610082295 A CN201610082295 A CN 201610082295A CN 107044962 A CN107044962 A CN 107044962A
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- 239000002912 waste gas Substances 0.000 claims abstract description 25
- 238000001035 drying Methods 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 23
- 239000000203 mixture Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 12
- 239000000523 sample Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000003949 liquefied natural gas Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N2021/3129—Determining multicomponents by multiwavelength light
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The present invention relates to nondispersive ultraviolet SO2、NO、NO2Polymeter, its object is to provide a light source using measuring instrument simultaneously accurately to measure the SO in waste gas2、NO、NO2Amount, including light source, the nondispersive ultraviolet SO of the first testing agency to the 3rd testing agency2、NO、NO2Measuring instrument, and the rich pure drying machine of front end setting in measuring unit is provided, the structure for minimizing moisture interference is applicable, so as to improve the structure of measurement accuracy and durability.
Description
Technical field
Nondispersive ultraviolet is the present invention relates to the use of to measure the SO included in the waste gas of chimney2、NO、NO2
Amount device, be related in more detail to prevent water point interference and pollute, so as to the mode structure continuously measured
Into nondispersive ultraviolet SO2、NO、NO2The pretreatment technology of measuring instrument.
Background technology
With industrialized progress, factory's increase, the quantity of chimney also increases therewith, the waste gas discharged from chimney
It is considered as a main cause of induced environment pollution, so the composition of measurement and analysis waste gas seems particularly heavy
Will, so as to the harmful components included in reducing the waste gas discharged from chimney.On the one hand, the chimney master used at present
Will be using fossil fuels such as coal, oil, liquefied natural gas (LNG) as main fuel.
In order to measure the SO being included in the waste gas of chimney2、NO、NO2Amount, at present using utilizing infrared ray
Measuring instrument, the measuring instrument using nondispersive ultraviolet, electric chemical formula measuring instrument, the survey using chemoluminescence method
Instrument is measured, the measuring instrument of nondispersive ultraviolet is utilized.
Measuring instrument using above-mentioned infrared ray (IR) and the measuring instrument tool using non-dispersion infrared line (NDIR)
There is other gases (especially moisture (H2O the big shortcoming of interference)), above-mentioned electric chemical formula measuring instrument has the longevity
The short shortcoming of life, has the shortcomings that price is high using the measuring instrument of above-mentioned chemoluminescence method.
Most of conventional measuring instrument as described above is made up of sample types, and this is to drop low-moisture interference
And moisture solution is become easy.Sample mode takes up space greatly, and has the shortcomings that setup fee is high, institute
With to the nondispersive ultraviolet (NDUV using (insitu) mode in situ：Non-dispersive Ultraviolet)
The attention rate of measuring instrument increases increasingly.
Fig. 2 shows the structure chart of measuring instrument in the past using nondispersive ultraviolet.
Measuring instrument using above-mentioned nondispersive ultraviolet includes：Ultraviolet light source 11；Filter 12, from above-mentioned
Optionally only pass through the ultraviolet with the wavelength needed for measurement in the ultraviolet that ultraviolet light source 11 dissipates；
Beam splitter 13, in the ultraviolet by above-mentioned filter 12, a reflection part passes through remaining part；
Reference measure instrument 14, detects the ultraviolet reflected by above-mentioned beam splitter 13；Measuring unit 15, receives conduct
The waste gas of measurement object and the ultraviolet through above-mentioned beam splitter 13, make ultraviolet pass through waste gas；Detector 16,
Detect the ultraviolet projected by above-mentioned measuring unit 15.Unaccounted reference 17 is alignment unit.
On the other hand, in ultraviolet wavelength wave band, SO2Wavelength range with 290nm, NO has
220nm~230nm wavelength range, NO2Have in 240nm~245nm or 405nm wave bands and absorb
Wavelength range.
Therefore, the SO measured as constructed as above using the measuring instrument of nondispersive ultraviolet in waste gas is being utilized2、
NO、NO2When, in order to have and SO to measuring unit irradiation2Absorbing wavelength wave band, NO absorption
Wavelength range, NO2The corresponding wavelength range of absorbing wavelength wave band ultraviolet, rotate and constitute filter 12
Filtering wheel measure SO2、NO、NO2。
On the other hand, for the SO of chimney exhaust gas2、NO、NO2Measurement, in real time simultaneously measure SO2、
NO、NO2When it is most accurate, by contrast, the measuring instrument with structure as shown in Figure 1 have due to need turn
Move filtering wheel and measure SO by spells2、NO、NO2And cause the problem of precision of measurement is somewhat reduced.
Prior art literature
Patent document
Patent document 1：Patent Laid 10-2015-0115036 (on October 14th, 2015 is open)
The content of the invention
The present invention considers above mentioned problem and constituted that it is an object of the invention to provide accurately measured by in-situ method
SO in waste gas2、NO、NO2Mode pretreatment technology and one-piece type nondispersive ultraviolet SO2、NO、
NO2Measuring instrument.
The present invention, which is performed, reaches above-mentioned purpose, solves the problem of conventional shortcoming, it is ultraviolet that the present invention provides non-evacuation
Line SO2、NO、NO2Polymeter, it is characterised in that including：Measuring unit, for filling waste gas；
First light source, is configured at the side of above-mentioned measuring unit, internal irradiation from above-mentioned first light source to measuring unit
One ultraviolet；Secondary light source, is configured at the side of measuring unit, and above-mentioned secondary light source is to the inside of measuring unit
Illumination wavelength is 240nm~245nm or 405nm the second ultraviolet；First testing agency, located at measurement
The opposite side of unit, above-mentioned first testing agency be used to detecting by above-mentioned measuring unit project it is first ultraviolet
Line, specifically, above-mentioned first testing agency detect the first ultraviolet, above-mentioned first ultraviolet have to NO and
NO2And SO2Absorbing wavelength wave band so that produce include NO twocomponent signals and NO2Twocomponent signal and
SO2Twocomponent signal is included in interior detection signal；Second testing agency, located at the opposite side of measuring unit,
Above-mentioned second testing agency is used to detect the second ultraviolet projected by above-mentioned measuring unit, specifically, above-mentioned
The first ultraviolet detects in second testing agency, and above-mentioned first ultraviolet has to NO2And SO2Absorbing wavelength
Wave band, so as to produce NO2Twocomponent signal and SO2Twocomponent signal is included in interior detection signal；3rd inspection
Mechanism is surveyed, located at the opposite side of measuring unit, above-mentioned 3rd testing agency, which is used to detect, passes through above-mentioned measuring unit
The second ultraviolet projected；And produce to NO2The detection signal of composition.
There is following effect according to the present invention as characterized above：By measurement respectively from the first detector,
The detection signal that second detector, the 3rd detector are produced, can accurately measure the SO in waste gas2、NO、
NO2Amount.
Also, the present invention can obtain following Expected Results：Before gaseous sample is introduced, by measurement module,
Moisture removal is removed using rich pure drying machine (PPD, Perma Pure Dryer), few stabilization is disturbed so as to realize
Signal, effectively prevents pollution.
Brief description of the drawings
Fig. 1 is the setting figure of conventional sample mode.
Fig. 2 is the structure chart of the measuring instrument of conventional utilization nondispersive ultraviolet.
Fig. 3 is the structure chart of the measuring instrument of the preferred embodiment of the present invention.
Fig. 4 is the exemplary plot for setting chimney.
The explanation of reference
110：Measuring unit 120：First light source
140：First testing agency 141：First detector
142：First filter
150：Second testing agency 151：Second detector
152：Second filter 160：3rd testing agency
Embodiment
Hereinafter, with reference to accompanying drawing to a preferred embodiment of the present invention will be described in detail.The present invention will be described
During, it is believed that make the main points appearance of the present invention unnecessary illustrating for related known function or structure
When obscuring, detailed description thereof will be omitted.
Fig. 3 illustrates the structure chart of the measuring instrument of the preferred embodiments of the present invention.
SO2, NO, NO2 measuring instrument of the present invention is by measuring unit 110, the first light source 120, secondary light source
130th, the first testing agency 140, the second testing agency 150, the 3rd testing agency 160 are constituted.
Above-mentioned measuring unit 110, which is used to provide, makes the ultraviolet from the diverging of light source 120 by being used as measurement object
Waste gas when the space that is absorbed of SO2, NO, NO2 for being comprised in waste gas, the shape of waste gas inflow entrance 111
Into in a side of above-mentioned measuring unit 110, outlet port 112 is formed at the another of above-mentioned measuring unit 110
One side, thus above-mentioned measuring unit 110, which has, makes the structure for the waste gas circulation to be measured.
On the other hand, the ultraviolet produced by light source 120 is made to be flowed into from the one side of above-mentioned measuring unit 110,
Make to flow out from the opposite sides of above-mentioned measuring unit 110 by the ultraviolet of waste gas, it is preferable that above-mentioned measurement list
The two sides of member 110 are sealed by transparent sheet material, to prevent waste gas from being flowed out to outside.
Above-mentioned first light source 120 is configured at the side of measuring unit 110, to the internal irradiation first of measuring unit 110
Ultraviolet.
This first light source 120 can be included the ultraviolet of the ultraviolet of 220nm~405nm wavelength range by generation
Lamp is constituted.
Above-mentioned first testing agency 140 is used to detect the ultraviolet projected by measuring unit 110, come produce NO into
Sub-signal and NO2Twocomponent signal and SO2Twocomponent signal is included in interior detection signal.
This first testing agency 140 is located at the opposite side of measuring unit 110, and above-mentioned measuring unit is passed through for receiving
110 ultraviolets projected, more specifically, being made up of the first detector 141 and the first filter 142, above-mentioned first
The filter 142 of detector 141 and first is configured at the opposite side of above-mentioned measuring unit 110.
As described above, above-mentioned first detector 141 is configured at the opposite side of measuring unit 110, lead to for detecting to have
First ultraviolet of the wavelength for crossing the first filter 142 to select, is produced corresponding with the first ultraviolet being detected
Detection signal.
Above-mentioned first filter 142 is configured in the way of between the detector 141 of measuring unit 110 and first, on
The first filter is stated only to make the side that wavelength as 220nm~230nm the first ultraviolet irradiate to the first detector 141
Formula is made up of the filter for optionally passing through only the first ultraviolet with the wavelength range.
On the other hand, according to a preferred embodiment of the invention, above-mentioned first filter 142 is by optionally only making
The filter that first ultraviolet of 228nm wavelength is passed through is constituted.
Second testing agency 150 is used to detect the first ultraviolet projected by measuring unit 110, produces and includes NO2
Twocomponent signal and SO2The detection signal of twocomponent signal.
This second testing agency 150 is located at the opposite side of measuring unit 110, and measuring unit 110 is passed through for detecting
The first ultraviolet projected, more specifically, being made up of the second detector 151 and the second filter 152, above-mentioned second
The filter 152 of detector 151 and second is configured at the opposite side of measuring unit 110.
Certainly, above-mentioned second testing agency 150 is with ultraviolet in different from the first testing agency 140 position detections first
The mode of line is constituted.
Above-mentioned second detector 151 is located at the opposite side of measuring unit 110, and the second filter is passed through to detect to have
First ultraviolet of 152 selected wavelength, produces the detection letter corresponding with the first ultraviolet being detected
Number.
Second filter 152 is in the way of the first ultraviolet with respective wavelength is irradiated to the second detector 151
It is made up of the filter for optionally passing through only the first ultraviolet with corresponding wavelength range.
On the other hand, according to a preferred embodiment of the invention, above-mentioned second filter 152 is by optionally only making wavelength
The filter passed through for 280nm the first ultraviolet is constituted.
As reference, the filter for only passing through the ultraviolet of particular wavelength band is widely used known technology,
The illustrating in itself omitted below to filter.
3rd testing agency 160 is detected to produce NO for the second ultraviolet for projecting by measuring unit 1102
Twocomponent signal, above-mentioned 3rd testing agency 160 is made up of the 3rd detector 161, and above-mentioned 3rd detector 161 is located at
Another side of measuring unit, for receiving the second ultraviolet projected by measuring unit 110.
On the other hand, the inspection produced in above-mentioned first detector 141, the second detector 151, the 3rd detector 161
Survey signal and be transferred to computer (not shown), the program for being arranged at the computer is analyzed for the detection signal received
To measure the SO in waste gas2、NO、NO2Amount.
Below to utilizing the above-mentioned SO with constituted above2、NO、NO2Measuring instrument measures the SO in waste gas2、
NO、NO2The process of amount illustrate.
For NO and NO2Measurement make inner loop from waste gas to measuring unit 110 during, to pass through
The work of one light source 120 and secondary light source 130 to irradiate the first ultraviolet and the second ultraviolet to measuring unit 110,
And pass through measuring unit 110 with the first detector 141 and the detection of the second detector 151 and the 3rd detector 161
First ultraviolet of injection, the mode of the second ultraviolet are carried out.
In more detail, it is the of 228nm that above-mentioned first detector 141, which receives the wavelength through the first filter 142,
One ultraviolet.
It is used as reference, during the above-mentioned ultraviolet that wavelength is 228nm is by measuring unit 110, a part
Ultraviolet is by the NO and NO in waste gas2And SO2Absorb, be the first ultraviolet of 228nm for Detection wavelength
The detection signal produced in this first detector 141 of line includes NO twocomponent signals and NO2Twocomponent signal with
And SO2Twocomponent signal.
On the other hand, it is the of 280nm that above-mentioned second detector 151, which receives the wavelength through the second filter 152,
One ultraviolet.
In this way, including NO in the detection signal that the second detector 151 is produced2Twocomponent signal and SO2Twocomponent signal,
But due to interfering between these signals, thus can not only lean against the second detector 151 generation detection signal come
Know accurate NO2Amount.
On the other hand, above-mentioned 3rd detector 161 is received produces in secondary light source 130, and passes through measuring unit 110
Wavelength be 405nm the second ultraviolet.
As reference, because above-mentioned second ultraviolet that wavelength is 405nm is hardly by NO and SO2Absorbed,
Consequently only that NO2Twocomponent signal reaches the 3rd detector 161, just can be by the inspection that is produced in the 3rd detector 161
Signal is surveyed to learn the NO in waste gas2Amount.
After all, it is only able to detect pure NO in the 3rd detector 1612Twocomponent signal, so if using comprising
NO in the detection signal of the 3rd detector 1612Twocomponent signal removes the detection included in the second detector 151
NO in signal2Twocomponent signal, it is possible to export pure SO2Twocomponent signal.
By that analogy, if utilizing the NO included in the detection signal of the second detector 1512Twocomponent signal and SO2
Twocomponent signal removes the NO included in the detection signal of the first detector 1412Twocomponent signal and SO2Twocomponent signal,
Pure NO twocomponent signals can just be exported.
As described above, according to the non-evacuation ultraviolet SO of the present invention2、NO、NO2Measuring instrument has can be than calibrated
Really measure the SO in waste gas2、NO、NO2The advantage of amount.
Fig. 3 is the structure chart of the measuring instrument of the preferred embodiments of the present invention, using being built in measuring unit and sample probe
Between rich pure drying machine (PPD, PERMA PURE DRYER) remove moisture removal, it is intended to detection is excluded with this
Interference, prevents the pollution of the measuring unit because of caused by the inflow of moisture and improves durability.
The invention is not limited in above-mentioned specific preferred embodiment, asked without departing from the claimed scope of invention
Idea of the invention on the premise of, general technical staff of the technical field of the invention is various it is of course possible to carry out
Deformation implementation, and this change is in the scope described in the claimed scope of invention.
Claims (3)
1. a kind of non-evacuation ultraviolet SO2、NO、NO2Polymeter, it is characterised in that including：
Measuring unit, for filling waste gas；
Light source, is configured at the side of above-mentioned measuring unit, and above-mentioned light source is to the internal irradiation ultraviolet of measuring unit, energy
The enough gas for measuring 3 kinds of wavelength simultaneously；
First testing agency, located at the opposite side of measuring unit, above-mentioned first testing agency, which is used to detect, passes through above-mentioned survey
The first ultraviolet that unit is projected is measured, specifically, the first ultraviolet detects in above-mentioned first testing agency, and above-mentioned first is purple
Outside line has to NO and NO2And SO2Absorbing wavelength wave band, so as to produce NO twocomponent signals and NO2Into
Sub-signal and SO2Twocomponent signal is included in interior detection signal；
Second testing agency, located at the opposite side of measuring unit, above-mentioned second testing agency, which is used to detect, passes through above-mentioned survey
The second ultraviolet that unit is projected is measured, specifically, the first ultraviolet detects in above-mentioned second testing agency, and above-mentioned first is purple
Outside line has to NO2And SO2Absorbing wavelength wave band；So as to produce NO2Twocomponent signal and SO2Composition is believed
Number it is included in interior detection signal；And
3rd testing agency, located at the opposite side of measuring unit, above-mentioned 3rd testing agency, which is used to detect, passes through above-mentioned survey
The second ultraviolet that unit is projected is measured, and is produced to NO2The detection signal of composition.
2. non-evacuation ultraviolet SO according to claim 12、NO、NO2Polymeter, its feature
It is,
Above-mentioned first testing agency includes：
First detector, located at the opposite side of above-mentioned measuring unit, above-mentioned first detector is used to detect the first ultraviolet；
And
First filter, is configured in the way of between above-mentioned measuring unit and the first detector, and above-mentioned first filters
The first ultraviolet that device only makes wavelength be 220nm~230nm passes through.
3. non-evacuation ultraviolet SO according to claim 12、NO、NO2Polymeter, its feature
It is, the front end of above-mentioned measuring unit includes the rich pure drying machine for being used to remove moisture removal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610082295.0A CN107044962A (en) | 2016-02-05 | 2016-02-05 | Non- evacuation ultraviolet SO2、NO、NO2Polymeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610082295.0A CN107044962A (en) | 2016-02-05 | 2016-02-05 | Non- evacuation ultraviolet SO2、NO、NO2Polymeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107044962A true CN107044962A (en) | 2017-08-15 |
Family
ID=59543468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610082295.0A Pending CN107044962A (en) | 2016-02-05 | 2016-02-05 | Non- evacuation ultraviolet SO2、NO、NO2Polymeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107044962A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444087A (en) * | 2018-10-29 | 2019-03-08 | 北京理工大学 | A kind of heavy goods vehicles NOXQuick Handheld detection device |
| CN109975231A (en) * | 2017-12-27 | 2019-07-05 | 茶山Sm株式会社 | Based on the ultraviolet automobile exhaust gas checking apparatus of on-dispersive |
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|---|---|---|---|---|
| US6455851B1 (en) * | 2000-03-28 | 2002-09-24 | Air Instruments And Measurement, Inc. | Spectroscopic remote sensing exhaust emission monitoring system |
| CN1648638A (en) * | 2005-02-05 | 2005-08-03 | 西安交通大学 | Multiple component gas concentration quantitative analyzer based on supporting vector machine |
| CN101256140A (en) * | 2008-03-17 | 2008-09-03 | 哈尔滨工业大学 | Portable apparatus and measuring method for monitoring gas concentration of sulphur dioxide and nitrous oxide meanwhile |
| CN101413882A (en) * | 2008-11-21 | 2009-04-22 | 聚光科技（杭州）有限公司 | Method and apparatus for detecting chlorine and hydrogen chloride in PVC production |
| CN101726468A (en) * | 2009-12-11 | 2010-06-09 | 宇星科技发展(深圳)有限公司 | Nox analyzer |
| CN202041462U (en) * | 2011-03-16 | 2011-11-16 | 西安工业大学 | Portable flue gas analyzer |
-
2016
- 2016-02-05 CN CN201610082295.0A patent/CN107044962A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6455851B1 (en) * | 2000-03-28 | 2002-09-24 | Air Instruments And Measurement, Inc. | Spectroscopic remote sensing exhaust emission monitoring system |
| CN1648638A (en) * | 2005-02-05 | 2005-08-03 | 西安交通大学 | Multiple component gas concentration quantitative analyzer based on supporting vector machine |
| CN101256140A (en) * | 2008-03-17 | 2008-09-03 | 哈尔滨工业大学 | Portable apparatus and measuring method for monitoring gas concentration of sulphur dioxide and nitrous oxide meanwhile |
| CN101413882A (en) * | 2008-11-21 | 2009-04-22 | 聚光科技（杭州）有限公司 | Method and apparatus for detecting chlorine and hydrogen chloride in PVC production |
| CN101726468A (en) * | 2009-12-11 | 2010-06-09 | 宇星科技发展(深圳)有限公司 | Nox analyzer |
| CN202041462U (en) * | 2011-03-16 | 2011-11-16 | 西安工业大学 | Portable flue gas analyzer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975231A (en) * | 2017-12-27 | 2019-07-05 | 茶山Sm株式会社 | Based on the ultraviolet automobile exhaust gas checking apparatus of on-dispersive |
| CN109444087A (en) * | 2018-10-29 | 2019-03-08 | 北京理工大学 | A kind of heavy goods vehicles NOXQuick Handheld detection device |
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Application publication date: 20170815 |
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