CN108169424A - A kind of VOCs detection devices - Google Patents
A kind of VOCs detection devices Download PDFInfo
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- CN108169424A CN108169424A CN201711423331.6A CN201711423331A CN108169424A CN 108169424 A CN108169424 A CN 108169424A CN 201711423331 A CN201711423331 A CN 201711423331A CN 108169424 A CN108169424 A CN 108169424A
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- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 40
- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 238000005070 sampling Methods 0.000 claims abstract description 87
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 39
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000004458 analytical method Methods 0.000 claims abstract description 15
- 239000013618 particulate matter Substances 0.000 claims abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 7
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- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims 1
- -1 Methyl fluoride vinyl ethers Chemical class 0.000 claims 1
- 229910052731 fluorine Inorganic materials 0.000 claims 1
- 239000011737 fluorine Substances 0.000 claims 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N monofluoromethane Natural products FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims 1
- 239000011347 resin Substances 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims 1
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- 239000007789 gas Substances 0.000 description 32
- 239000000523 sample Substances 0.000 description 31
- 238000012544 monitoring process Methods 0.000 description 20
- 239000005416 organic matter Substances 0.000 description 12
- 238000010521 absorption reaction Methods 0.000 description 10
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- 238000009833 condensation Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- BLTXWCKMNMYXEA-UHFFFAOYSA-N 1,1,2-trifluoro-2-(trifluoromethoxy)ethene Chemical compound FC(F)=C(F)OC(F)(F)F BLTXWCKMNMYXEA-UHFFFAOYSA-N 0.000 description 5
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- 231100000719 pollutant Toxicity 0.000 description 5
- DDTBPAQBQHZRDW-UHFFFAOYSA-N cyclododecane Chemical compound C1CCCCCCCCCCC1 DDTBPAQBQHZRDW-UHFFFAOYSA-N 0.000 description 4
- 238000003795 desorption Methods 0.000 description 4
- 230000035611 feeding Effects 0.000 description 4
- 150000002894 organic compounds Chemical class 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 3
- 239000005030 aluminium foil Substances 0.000 description 3
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
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- 239000007787 solid Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 150000001728 carbonyl compounds Chemical class 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
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- 239000002808 molecular sieve Substances 0.000 description 2
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- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- FYTRJJFTGJERAH-UHFFFAOYSA-M zinc;pent-1-ene;bromide Chemical compound Br[Zn+].[CH2-]CCC=C FYTRJJFTGJERAH-UHFFFAOYSA-M 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- 101000640743 Ralstonia solanacearum (strain GMI1000) Tryptophan 2,3-dioxygenase 2 Proteins 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
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- 238000011049 filling Methods 0.000 description 1
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- 229920002313 fluoropolymer Polymers 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
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- 239000005350 fused silica glass Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
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- 238000002161 passivation Methods 0.000 description 1
- CSJWOWRPMBXQLD-UHFFFAOYSA-N perfluoromethylvinylether group Chemical class FC(=C(C(F)(F)F)F)OC(=C(F)C(F)(F)F)F CSJWOWRPMBXQLD-UHFFFAOYSA-N 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000007430 reference method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000002470 solid-phase micro-extraction Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0047—Organic compounds
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention relates to a kind of VOCs detection devices, and including sampling system and analysis system, the sampling system includes sampler bag, sampling pipe, particulate filter, aspiration pump, and the analysis system is total organic carbon（TOC）Analyzer；The sampler bag samples connecting tube, jointing is connect with sampling instrument, tested gas is made to flow into sampler bag with aspiration pump by silica gel sampling pipe, particulate matter filter device.
Description
Technical field
The present invention relates to VOCs detection technique fields, particularly a kind of VOCs detection devices.
Background technology
China is still in the infancy for the research of air VOCs, in the VOCs monitorings of development, prison
Measured data is more scattered, and target compound is also inconsistent.Although certain VOC monitoring technology obtain preliminary at home during VOCs is monitored
Using, but up to the present, the Technical Standard System there are no a set of maturation can all-sidedly and accurately push the monitoring point of VOCs
Analysis.Especially in terms of stationary source monitoring standard method, since stationary source VOCs concentration of emissions span is big, monitoring group
Divide Air Pollution Control demands that are more and complicated and changeable, therefore being directed to country, there is an urgent need for carrying out the VOCs of specification to monitor, push national
The construction of air VOCs monitoring capabilities.External VOCs monitoring methods are using the series methods of U.S. EPA as representative, the index of monitoring
There is total gaseous organic substance（It is total hydrocarbon）With single organic pollution, the acquisition method diversification of VOCs emissions, useful sampling
Bottle collection, sampler bag sampling, the sampling of adsorption sampling pipe sample, metal-like quality control.（1）To the volatile organic matter in surrounding air
Measure, U.S. EPA TO-1 methods using Tenax sample GC-MS methods, analysis compound for boiling point about 80 DEG C-
200 DEG C of nonpolar organic compound.
TO-2 is to sample GC-MS methods using carbon molecular sieve, and main acquisition is containing carbon number is few, organic matter of high volatility.TO-
17 methods sample GC-MS methods using solid packing adsorption tube, and it is organic that different wire feedings can measure different volatility
Object, acquisition and the classes of compounds measured are more.（2）Using in adsorbing medium sampling technique, mostly adsorbed using cryogenic condensation
Method, individual method are also used directly by the technology of the direct cryogenic condensation of sample volatile organic matter.Cryogenic condensation sampling technique pair
The technical conditions of sample devices have higher requirement.（3）TO-14 and TO-15 samples GC-MS methods using sample can, with
The difference of TO-1 methods is that input mode is different, and energy detection compound is more than TO-1.（4）And in direct sampling method, U.S. side
The polyvinyl fluoride that sampling container used in method uses more（PVF）The airbag sampling of material.For example, Dupont（DUPON）It is public
The high molecular material Tedlar PVF of production are taken charge of, air-tightness and chemical inertness are fine, and airbag sampling operation is also more convenient.State
The interior VOCs method of samplings do not have the special method of sampling for exhaust tube volatile organic matter in national standard method, waving
Hair property organic matter is included into " gaseous pollutant " one kind, samples by national standard method HJ/T 397-2007《Waste gas in fixed source monitors skill
Art specification》With GB/T 16157-1996《Particulate matter measures and the gaseous pollutant method of sampling in Concentration in Fixed Pollutants Source》To advise
Model.Volatile organic matter belongs to gaseous pollutant, and 9.3 defined absorption bottles or absorption tube are adopted suitable for GB/T 16157
Three kinds of sample system, Dewar bottle sampling system or syringe sampling system method of samplings.《Air and waste gas method for monitoring and analyzing》（The
Four editions）Employ solid absorption GC-MS methods and sample can sampling GC-MS methods, both methods be all C classes method and also not to
Go out detection limit and accuracy data.National standard GB11737-89 and GB14677-93 are also using solid absorption, and carbon disulfide is washed
De- or Thermal desorption method, but its target compound that can be measured is very little, is confined to benzene homologues.
The airbag method of sampling is external ripe, most widely used exhaust tube volatile organic matter sampling technique.In recent years
In monitoring field, the application of the airbag method of sampling is also more and more for the country.Gas has been widely used in it since the 70's of last century
Sampler body technology.With Environmental Protection in China and it is economical flourish, the usage amount of China's polyvinyl fluoride gas sampling bag be also by
Year increases, and according to incompletely statistics, the polyvinyl fluoride material usage amount as gas sampling bag in 2006 is more than 2.5 tons.
CN206671290U provides a kind of VOCs detection devices, including shell, probe tube and detector ontology, further includes
Spiral gas collecting tube and gas bottle are disposed with coarse granule filter on the probe tube, fine grained filter, take from left to right
Sample pump, first switch valve, spiral gas collecting tube, flow control valve, the spiral gas collecting tube are arranged in medium box body, the flow
The outlet side of regulating valve is connected with one end of sample presentation pipe, and the other end of sample presentation pipe is connected with the gas bottle, and sample presentation pipe is equipped with
The sample feeding pipe being attached thereto, the outlet side of sample feeding pipe connect the detector ontology, and sample feeding pipe is equipped with intake valve.Ensureing
The cleaning frequency of filter core is also effectively extended, and can realize the function of first sampling and analyze again while filtering effect, had simultaneously
Judge whether the organic matter in gas can pass through the function that the mode of condensation recycling is effectively recycled.
CN104807899A is related to a kind of volatile carbonyl compound analytical equipment.It includes：One power supply and program control
For controlling and adjusting the working condition of whole system, a sampling and thermal analysis apparatus, a load are connected to by circuit for case
Gas cylinder connection sampling and thermal analysis apparatus, the sampling and thermal analysis apparatus can be carried out at the same time adopting for volatile carbonyl compound sample
Collection and Thermal desorption, the sample after Thermal desorption enter a Gc/ms Analyser by a fused quartz tube and carry out carbonyl
The separation of compound and quantitative.Each sampling pipe sampling is not interfere with each other with the Thermal desorption stage, can be carried out at the same time, so as to fulfill to environment
The continuous monitoring of carbonyls in air.The present invention can be not only used for the sight of carbonyls in conventional surrounding air
It surveys, and can be used for the continuous detection of laboratory smoke fog chamber simulation secondary organic aerosol oxidation product.
CN101551351B discloses VOCs detecting systems based on photocatalysis technology and detection method and self-cleaning method, belongs to
VOCs detection methods and engineering device technique field.It is formed with light source, gas sensor, TT＆C system plate based on photocatalysis technology
VOCs detecting systems, light source, gas sensor respectively with TT＆C system plate control connect, relative to the irradiation position of light source 1
It is equipped with gas sensor 3.Orderly irradiation is carried out to gas sensor by light source, TT＆C system plate receives and processes air-sensitive
Sensor frequency response signal, VOCs detections can be realized in the concentration signal output for being converted into corresponding gas, sensitive with detecting
Degree it is high, simple in structure, at low cost, applied widely, can real-time online detect the advantages that.System is placed in clean environment, light
Source carries out Continuous irradiation with certain intensity of illumination to gas sensor, you can convenient, safely implement self-cleaning, and be desorbed dry
Only, thoroughly, using effect and the service life of gas sensor are effectively improved.
Existing known technology detection method has the following disadvantages：
Gas chromatography, combined gas chromatography mass spectrometry are most common VOCs detection and analysis qualitative and quantitative analysis methods, but GC/ at present
The measuring method process of MS is complicated, and the spy of the component, especially raw material used in chemical enterprise of test substance known to needs
Point determines that its production and discharge process organic compound composition are also extremely complex, it is difficult to by measuring VOC content to complexity
The organic contamination situation of various gaseous samples carries out the monitoring of total amount.Since different adsorbents imitate the absorption of different compounds
Rate is different, and there is no the VOCs that single adsorbent is suitable for all volatility and polarity range, such as carbon molecular sieve sampling
GC-MS methods, main acquisition is containing carbon number is few, organic matter of high volatility；Filling adsorption pipe samples GC-MS methods, different fillers
Type can measure different volatile organic matters, be suitable for acquiring all volatility and polarity model without a kind of single adsorbent
The organic compound enclosed needs multistage layer absorption and cryogenic condensation absorption method, and cryogenic condensation sampling technique is to the skill of sample devices
Art condition has higher requirement（Some compounds（Such as formaldehyde and acrylic acid）Reactivity or to heat unstability be not easy from suction
Attached dose of upper recycling.China national standard method of sampling HJ/T 397-2007 and GB/T 16157-1996 and various volatility are organic
Without applying this technology in the National Standard Method of Determination of object.Solvent solid phase microextraction collection is sampled, is extracted, concentrating in one, excellent
Point is to use simply, but selectivity, stability to extracting coating etc. still needs to further study.SUMMA tanks sample GC-MS methods
（TO-14 and TO-15）Method is simple, and gas stabilization is good, is gas sampling standard method and mesh that U.S. EPA is recommended
Widely used method in preceding VOCs component collections field.But because its sample introduction equipment is expensive, stainless steel sampling technique need through
" SUMMA " electropolishing, " Silcostell " Passivation Treatment and cryogenic freezing shrinkage are crossed, cost is higher, is difficult in China at this stage
It promotes.
It is used compared to foreign method for disposable polyvinyl fluoride airbag, the sampling container vacuum of national standard method
Bottle or syringe it is not portable and use；Although cleaning Reusability can be carried out, cleaning operation program is increased, if
Inner wall surface does not clean up, and blank can be caused to pollute due to absorption of the last time sample in sampling container retains, influence to supervise
Survey the quality of result；In addition, syringe and the Dewar bottle opposite airbag in air-tightness are poor, Dewar bottle must also make before sampling
With its air-tightness of vacuum table look-up, operate comparatively laborious.For stationary source, especially incinerator, it is understood that there may be carbon granules
Deng the substance for influencing monitoring result, it although common filter device can play a role, can also cause absorption problem, can also influence
Monitoring result.
Invention content
The technical problems to be solved by the invention are to overcome the deficiencies of the prior art and provide a kind of VOCs detection devices.
In order to solve the above technical problems, present invention employs following technical solutions：A kind of VOCs detection devices, including
Following steps：
A kind of VOCs detection devices, including sampling system and analysis system, the sampling system include sampler bag, sampling pipe,
Grain object filter, aspiration pump, the analysis system are total organic carbon（TOC）Analyzer；The sampler bag include silica gel sampling pipe,
Particulate matter filter device samples connecting tube, is connect by jointing with sampling instrument, tested gas is made to flow into sampling with aspiration pump
Bag, the total organic carbon（TOC）Analyzer includes high-temp combustion oxidation furnace and non-dispersive infrared detector, gas direct injected dress
It puts, using gastight syringe sample introduction, it is characterised in that：Anti-carbon deposition filtering material is housed in the particulate matter filter device.It is described
Pumping pump inlet is connected with silicone tube with flue thief hatch, and the filter membrane clip equipped with anti-carbon deposition filtering material is passed through in outlet with silicone tube
It is connected with sampler bag.
The anti-carbon deposit filtering material preparation method is：By weight, by 100 parts of Pvdf Microporous Hollow Fiber Membranes,
Under N2 protections, leaching is embedded in 1000-2000 parts of cyclododecane triolefins, 0.001-0.01 parts of tetramethylguanidine acrylates, 0.01-
0.1 part of 4- pentenyl zinc bromide, 0.01-0.1 parts of perfluoro methyl vinyl ethers, 1-5 parts of trans- 1- nonenes ylboronic acid mixed solutions
In, N2 protections, are 20-60kGy or so with 60Co gamma-rays exposure doses, and exposure time 20-50 minutes is filtered, dry, are obtained
To anti-carbon deposit filtering material.
The sampler bag selects fluoroplastic film, preferably polyvinyl fluoride thin film（PVF）.
The material for sampling connecting tube is polyflon（PTFE）；Jointing material is stainless steel.
The sampler bag, sampling pipe, particulate filter, aspiration pump, total organic carbon（TOC）Analyzer；Kynoar
Hollow-fibre membrane, tetramethylguanidine acrylates, perfluoro methyl vinyl ether, trans- 1- nonenes ylboronic acid, is commercial product.
Compared with prior art, the invention has the advantages that：
（1）For stationary source VOCs concentration of emissions span is big, more than monitoring component and characteristic complicated and changeable, is fired using catalysis
Burning method directly measures total content of organic carbon (TOC) in air and replaces the measurement of volatile organic matter, can effectively have to various
The pollution condition of machine object is monitored.
（2）Using airbag direct sampling method, air-tightness and chemical inertness are good for sampling, have that easy to operate, cost is opposite
The advantages of low.（3）This method is discharged suitable for stationary source VOCs, and monitoring concentration span is big, and data area is from 10-
300000mg/m3 is especially suitable for the monitoring of high density pollution source VOCs.
（4）Anti- carbon deposit filtering material is eliminated there may be the substance that carbon granules etc. influences monitoring result, while is not caused
Absorption problem does not interfere with monitoring result.
1）Specific embodiment
Below in conjunction with specific embodiment, the present invention is furture elucidated, but these embodiments are only used for explaining the present invention rather than use
In limiting the scope of the invention.
Embodiment 1
A kind of VOCs detection devices, including sampling system and analysis system, the sampling system include sampler bag, sampling pipe,
Grain object filter, aspiration pump, the analysis system are total organic carbon（TOC）Analyzer；The sampler bag include silica gel sampling pipe,
Particulate matter filter device samples connecting tube, is connect by jointing with sampling instrument, tested gas is made to flow into sampling with aspiration pump
Bag, the total organic carbon（TOC）Analyzer includes high-temp combustion oxidation furnace and non-dispersive infrared detector, gas direct injected dress
It puts, using gastight syringe sample introduction, it is characterised in that：Anti-carbon deposition filtering material is housed in the particulate matter filter device.It is described
Pumping pump inlet is connected with silicone tube with flue thief hatch, and the filter membrane clip equipped with anti-carbon deposition filtering material is passed through in outlet with silicone tube
It is connected with sampler bag.
The anti-carbon deposit filtering material preparation method is：By weight, by 100 parts of Pvdf Microporous Hollow Fiber Membranes,
Under N2 protections, leaching is embedded in 1300 parts of cyclododecane triolefins, 0.005 part of tetramethylguanidine acrylates, 0.04 part of 4- amylene bromide
Change zinc, 0.04 part of perfluoro methyl vinyl ether, in 3 parts of trans- 1- nonenes ylboronic acid mixed solutions, N2 protections, with 60Co gamma-rays
Exposure dose is 40kGy or so, and exposure time 30 minutes is filtered, dry, obtains anti-carbon deposit filtering material.
The sampler bag selects Dupont（DUPON）The high molecular material Tedlar PVF materials of company's production
The material for sampling connecting tube is polyflon（PTFE）；Jointing material is stainless steel.
Embodiment 2
A kind of VOCs detection devices, including sampling system and analysis system, the sampling system include sampler bag, sampling pipe,
Grain object filter, aspiration pump, the analysis system are total organic carbon（TOC）Analyzer；The sampler bag include silica gel sampling pipe,
Particulate matter filter device samples connecting tube, is connect by jointing with sampling instrument, tested gas is made to flow into sampling with aspiration pump
Bag, the total organic carbon（TOC）Analyzer includes high-temp combustion oxidation furnace and non-dispersive infrared detector, gas direct injected dress
It puts, using gastight syringe sample introduction, it is characterised in that：Anti-carbon deposition filtering material is housed in the particulate matter filter device.It is described
Pumping pump inlet is connected with silicone tube with flue thief hatch, and the filter membrane clip equipped with anti-carbon deposition filtering material is passed through in outlet with silicone tube
It is connected with sampler bag.
The anti-carbon deposit filtering material preparation method is：By weight, by 100 parts of Pvdf Microporous Hollow Fiber Membranes,
Under N2 protections, leaching is embedded in 1000 parts of cyclododecane triolefins, 0.001 part of tetramethylguanidine acrylates, 0.01 part of 4- pentenyl
Zinc bromide, 0.01 part of perfluoro methyl vinyl ether, in 1 part of trans- 1- nonenes ylboronic acid mixed solution, N2 protections are penetrated with 60Co γ
Line exposure dose is 20kGy or so, and exposure time 50 minutes is filtered, dry, obtains anti-carbon deposit filtering material.
The sampler bag selects Dupont（DUPON）The high molecular material Tedlar PVF materials of company's production.
The material for sampling connecting tube is polyflon（PTFE）；Jointing material is stainless steel.
Embodiment 3
A kind of VOCs detection devices, including sampling system and analysis system, the sampling system include sampler bag, sampling pipe,
Grain object filter, aspiration pump, the analysis system are total organic carbon（TOC）Analyzer；The sampler bag include silica gel sampling pipe,
Particulate matter filter device samples connecting tube, is connect by jointing with sampling instrument, tested gas is made to flow into sampling with aspiration pump
Bag, the total organic carbon（TOC）Analyzer includes high-temp combustion oxidation furnace and non-dispersive infrared detector, gas direct injected dress
It puts, using gastight syringe sample introduction, it is characterised in that：Anti-carbon deposition filtering material is housed in the particulate matter filter device.It is described
Pumping pump inlet is connected with silicone tube with flue thief hatch, and the filter membrane clip equipped with anti-carbon deposition filtering material is passed through in outlet with silicone tube
It is connected with sampler bag.
The anti-carbon deposit filtering material preparation method is：By weight, by 100 parts of Pvdf Microporous Hollow Fiber Membranes,
Under N2 protections, leaching is embedded in 2000 parts of cyclododecane triolefins, 0.01 part of tetramethylguanidine acrylates, 0.1 part of 4- amylene bromide
Change zinc, 0.1 part of perfluoro methyl vinyl ether, in 5 parts of trans- 1- nonenes ylboronic acid mixed solutions, N2 protections are shone with 60Co gamma-rays
Dosage is penetrated as 60kGy or so, exposure time 20 minutes is filtered, dry, obtains anti-carbon deposit filtering material.
The sampler bag selects Dupont（DUPON）The high molecular material Tedlar PVF materials of company's production.
The material for sampling connecting tube is polyflon（PTFE）；Jointing material is stainless steel.
Comparative example 1
Tetramethylguanidine acrylates is added without, the other the same as in Example 1.
Comparative example 2
Perfluoro methyl vinyl ether is added without, the other the same as in Example 1.
Comparative example 3
Trans- 1- nonenes ylboronic acid is added without, the other the same as in Example 1.
Comparative example 4
4- pentenyl zinc bromides are added without, the other the same as in Example 1.
Comparative example 5
Do not use Dupont（DUPON）The high molecular material Tedlar PVF material sample bags of company's production, using aluminium foil
Sampler bag.
With the Method18 of U.S. EPA（ Measurement of Gaseous Organic Compound
Emissions by Gas Chromatography）With Shanghai Environment Monitoring Center 2009《It is waved in Concentration in Fixed Pollutants Source
The sampling airbag method of hair property organic matter》（Exposure draft）For main reference method, wherein airbag sample material is employed, i.e.,
Dupont（DUPON）The Tedlar PVF sampler bags of company's production.The airbag method of sampling is external maturation, most widely used
General exhaust tube volatile organic matter sampling technique.Contrast test is carried out to PVF sampler bags, aluminium foil sampler bag, it can from data
To find out, aluminium foil sampler bag adsorbs sample more serious.PVF sampler bag effects are best.
1 sampler bag contrast test of table.
Comparative example 6
The material of original sampling connecting tube is Corvic.Reequip the material polyflon of post-sampling connecting tube.
The use of TC contents is 1360mg/m in this experiment3Standard mixing organic gas, with directly from calibrating gas bottle fill
Enter TC values that the gas in the sampler bag of standard gas measures as a control group, respectively with former sampling connecting tube with connecting to repacking post-sampling
It is comparative group to take over the TC values that the gas obtained by sampling measures, and testing result is shown in Table 2：
2 sampling pump contrast test of table.
Embodiment 4
By the anti-carbon deposit filtering materials of embodiment 1-3 and comparative example 1-3 there may be the influence monitoring result such as carbon granules, it is shown in Table 3
3 filter device contrast test of table.
The foregoing is merely the embodiment of the present invention, are not intended to limit the scope of the invention, every to utilize invention
The equivalent structure or equivalent flow shift that description is made, is directly or indirectly used in other related technical areas,
It is included within the scope of the present invention.
Claims (6)
1. a kind of VOCs detection devices, including sampling system and analysis system, the sampling system include sampler bag, sampling pipe,
Particulate filter, aspiration pump, it is characterised in that：The analysis system is total organic carbon（TOC）Analyzer；The sampler bag packet
Include silica gel sampling pipe, particulate matter filter device, sample connecting tube, connect by jointing with sampling instrument, with aspiration pump make by
It surveys gas and flows into sampler bag, the total organic carbon（TOC）Analyzer includes high-temp combustion oxidation furnace and non-dispersive infrared detector,
Gas direct injected device, using gastight syringe sample introduction, equipped with anti-carbon deposition filtering material, institute in the particulate matter filter device
Pumping pump inlet is stated with silicone tube with flue thief hatch to be connected.
2. a kind of VOCs detection devices according to claim 1, it is characterised in that it is described pumping pump inlet silicone tube with
Flue thief hatch is connected, and outlet passes through the filter membrane clip equipped with anti-carbon deposition filtering material with silicone tube and is connected with sampler bag.
A kind of 3. VOCs detection devices according to claim 1, it is characterised in that the anti-carbon deposit filtering material preparation side
Method is：By weight, by 100 parts of Pvdf Microporous Hollow Fiber Membranes, under N2 protections, leaching is embedded in 1000-2000 parts of rings ten
Dioxane triolefin, 0.001-0.01 parts of tetramethylguanidine acrylates, 0.01-0.1 parts of 4- pentenyl zinc bromides, 0.01-0.1 parts complete
Methyl fluoride vinyl ethers, in 1-5 parts of trans- 1- nonenes ylboronic acid mixed solutions, N2 protections are with 60Co gamma-rays exposure doses
20-60kGy or so, exposure time 20-50 minutes is filtered, dry, obtains anti-carbon deposit filtering material.
4. a kind of VOCs detection devices according to claim 1, it is characterised in that the sampler bag selects fluorine resin thin
Film.
5. a kind of VOCs detection devices according to claim 4, it is characterised in that the sampler bag selects polyvinyl fluoride thin
Film.
6. a kind of VOCs detection devices according to claim 1, it is characterised in that the material for sampling connecting tube is polytetrafluoro
Vinyl（PTFE）；Jointing material is stainless steel.
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Application publication date: 20180615 |