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WO2002101361A1 - Systeme de prelevement longue duree - Google Patents

Systeme de prelevement longue duree Download PDF

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Publication number
WO2002101361A1
WO2002101361A1 PCT/EP2002/006240 EP0206240W WO02101361A1 WO 2002101361 A1 WO2002101361 A1 WO 2002101361A1 EP 0206240 W EP0206240 W EP 0206240W WO 02101361 A1 WO02101361 A1 WO 02101361A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
partial
flow
gas flow
long
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2002/006240
Other languages
German (de)
English (en)
Inventor
Albert Merz
Bernhard Oser
Helmut Seifert
Reinhold Siegel
Günther ZIMMERMANN
Hubert Vogg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Karlsruher Institut fuer Technologie KIT
Original Assignee
Forschungszentrum Karlsruhe GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Forschungszentrum Karlsruhe GmbH filed Critical Forschungszentrum Karlsruhe GmbH
Priority to JP2003504074A priority Critical patent/JP2004530140A/ja
Priority to EP02747349A priority patent/EP1399725A1/fr
Publication of WO2002101361A1 publication Critical patent/WO2002101361A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2247—Sampling from a flowing stream of gas
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
    • G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
    • G01N1/2214—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling by sorption
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/24—Suction devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2247—Sampling from a flowing stream of gas
    • G01N2001/225—Sampling from a flowing stream of gas isokinetic, same flow rate for sample and bulk gas

Definitions

  • the present invention relates to a long-term sampling system for the continuous monitoring of dust and pollutant emissions and for determining the dust emission in flowing media with isokinetic removal of a partial gas stream from the main gas stream of a pollutant emitter, preferably an industrial incinerator, by means of a partial flow sampling probe with separation of the dust in the exhaust gas by cake filtration a filter and tapping the pressure loss caused by the flow through the same.
  • DE 41 15 212 C2 describes a method and an associated long-term sampling system for the continuous determination of dust contents in flowing media under isokinetic partial Current extraction of samples from the main gas stream of a pollutant emitter by means of a probe and with separation of the dusts by cake filtration on a filter are known.
  • An isokinetic partial flow withdrawal from a main gas flow exists if the partial flow to be extracted and measured has exactly the same composition with regard to the flue gas composition and the chemical components as the main gas flow (cf. [1]).
  • the following flow parameters are measured in order to constantly maintain the isokinetic partial flow withdrawal conditions on the partial flow withdrawal probe: the total pressure p G , the static pressure pst.
  • the static pressure p st ⁇ T of the partial gas stream the system temperature T, the gas humidity, and via an analysis unit downstream of the filter which taps into a partial stream, the gas composition.
  • the density, the viscosity ⁇ , the volume flow and the Reynolds number Re of the partial gas flow can be calculated from these flow parameters. These flow data serve to regulate the isokinetic partial flow draw in the event of changing flow conditions in the main exhaust gas flow.
  • the pressure loss in the unoccupied filter is measured at the start of a separation process.
  • the emission constant E r is empirically determined within an entire sampling cycle between h 0 and h end .
  • a substream is branched off from the substream of the exhaust gas cleaned of dust for an analysis of the volatile, ie. H. filterable chemical ingredients after the filter and before the pump not according to isokinetic conditions.
  • the object of the invention is to modify a long-term sampling system in such a way that in addition to the continuous quantitative long-term sampling of dusts in flowing media, the possibility is also created of volatile and thus filterable ingredients with optimized, i.e. H. Sensitive detection limit with simultaneous reduced measurement effort continuously quantitatively.
  • Fig. 1 shows the long-term sampling system in principle
  • Fig. 2 shows the partial flow extraction probe in the area of the probe mouth.
  • Fig. 1 shows the schematic of the illustrated embodiment of the long-term sampling system for the continuous determination of dust levels, gas composition, gas moisture and the volatile, ie. H. filterable chemical ingredients in flowing media under isokinetic partial flow removal conditions.
  • FIG. 1 shows the section of an exhaust gas duct 1 which is connected downstream of the flue gas cleaning stage as part of a previously described emission duration monitoring and in which the main gas stream 3 of the exhaust gas is directed in the direction indicated by the arrow.
  • the section shown is straight and vertical, the cross section of the exhaust duct 1 is round and the main gas stream flows upwards.
  • the isokinetic partial flow withdrawal takes place by means of a partial flow withdrawal probe 2, the probe mouth 6 of which is oriented against the flow in the flow profile of the main gas flow in the exhaust duct 1 in accordance with VDI guideline 2066.
  • the vacuum in the suction line 4 required for the suction of the partial flow is generated by a suction fan 5.
  • the flow data of the partial flow withdrawal probe 2 in particular the flow resistance coefficients of the probe mouth 6 in the main gas flow, are included as parameters in the regulation of the isokinetic partial flow withdrawal. They are determined in advance as part of separate wind tunnel measurements, changing depending on the temperature, pressure conditions and viscosity of the flow medium and taking into account when controlling the suction fan 5.
  • FIG. 2 shows a possible design of the partial flow sampling probe 2 in the area of the probe opening 6.
  • the static pressure p St , H of the main gas flow is at the outside via at least one radial outer opening 7, behind the probe opening the partial flow extraction probe, the static pressure p s _ , ⁇ of the partial gas flow via at least one radial inner opening 8 in the partial flow extraction probe and the total pressure p G via three pitot tubes 9, which tap the pressure values clearly in front of the opening of the probe opening, tapped in the main gas flow and in each case via one Pipeline not shown in the figures parallel to the suction line 4 to a pressure measuring device, which are located in a housing 10 at the end of the suction line 4 outside the exhaust duct, pneumatically forwarded and converted by this into electrical signals.
  • the system temperature T of the main gas flow is measured via a thermal sensor 11, which also taps the measured values clearly before the probe mouth.
  • the system temperature T and the three system pressures Ps t , H Pst, ⁇ and p G mentioned above are fed as four electrical signals 12 in parallel and simultaneously to a measuring and control unit 13 for controlling the suction fan 5 via an operating unit 14.
  • the partial gas flow sucked off via the partial flow extraction probe 2 and by means of the suction fan 5 can be switched over alternately via a feed line 15, a discharge line 22 and two multi-way valves 20 and 21 alternatively by one of the two filter housings 16 and 17, in which the dusts contained in the partial gas flow and others Solid particles are continuously separated on the fine filters 18 and 19, passed.
  • Teflon filters for example, are suitable as fine filters.
  • New to the long-term sampling system are the adsorber stages 23 and 24 arranged in the two filter housings 16 and 17 and directly downstream of the ultra-fine filters 18 and 19.
  • the volatile, i.e. filterable chemical ingredients, for example heavy metals or organic pollutants, dissolved in the partial gas stream accumulate on these Absorber material so that they can be quantified by a suitable analysis method after completion of the sampling.
  • the entire partial gas flow is passed through the adsorber stages 23 or 24, the entire proportion of the volatile constituents dissolved in the entire partial gas flow is also advantageously available for analysis. In this way, the detection limit for individual ingredients is lowered, so that the substances to be detected are much easier to detect even at very low concentrations.
  • the adsorber stages 23 and 24 connected downstream of the fine filters 18 and 19 do not require their own drive or control units, which considerably reduces the measurement effort previously required.
  • the long-term sampling system is therefore also suitable for continuous, long-term sampling of volatile substances without additional measuring technology.
  • the following substances can usually be detected on the adsorbent (e.g. polypropylene, activated carbon, etc.) of adsorber stages 23 and 24: polybrominated or polychlorinated dibenz-p-dioxins polybrominated or polychlorinated dibenzofurans polychlorinated biphenyls polychlorinated benzenes polychlorinated phenols polychlorinated naphthalene polycyclic aromatic hydrocarbons volatile heavy metals, such as B. Hg and their compounds
  • a bypass line 25 is connected in the discharge line 22, via which a minimal amount of lower current is constantly sucked in and fed directly to an analysis unit 26 and from there to the outside.
  • the gas composition is determined in the analysis unit, in particular with regard to C0 2 , 0 2 and the gas moisture.
  • the measured values determined in the process are supplied to the measuring and control unit 13 as electrical measured values 27.
  • the partial gas flow from the partial gas flow is reduced at the level of the discharge line 22, since the partial gas flow now only has to be branched off for the analysis unit 26.
  • the partial gas flow flows through the suction fan 5, from where it is fed back to the main gas flow via a further line, specifically at one point after the partial gas flow has been taken in the direction of flow.
  • these can optionally be provided with a heater, not shown in the figures.
  • the table clearly shows the enormous decrease in the concentration of furans and dioxins between the upper and middle adsorbent layer, which already has a value of 0.01 pg TEQ / Nm 3 in the second adsorbent layer and is therefore already in the range of the detection limit. For this reason, an analysis of the lower and possibly also the middle segment can be dispensed with for routine measurements.
  • absorption stages or combined ad and absorber layers are also included the same or different adsorbents which can be selected in each case with regard to the adsorption capacity for a specific pollutant.
  • a plurality of ad and / or absorber stages arranged one behind the other and / or in parallel can also be used, which can be analyzed separately and coordinated with one another.
  • the long-term sampling system offers the possibility of connecting additional analysis devices.
  • a branching of a lower part flow between the ultrafine filter and the adsorber stage or within the adsorber stage is suitable for additional, further gas analysis.
  • the leads 31 and 32 also open out between two ad or absorption stages.
  • Certain pollutants, which should not be measured in an independent gas analysis can be trapped in the ad or absorber stages, for example, to avoid cross-sensitivity in gas analysis.
  • portions of the pollutants absorbed or adsorbed before the derivation 31 or 32 are not lost for balancing the amounts of pollutants in the absorption or adsorption stages.
  • the long-term sampling system is also suitable for the assessment and optimization of a combustion process.
  • the essential information with regard to the assessment of a combustion process in particular the efficiency of combustion or the formation and release of pollutants from the process, is namely in the raw gas, i.e. between the waste heat boiler and the first flue gas cleaning stage.
  • the partial crude gas flow must also be removed isokinetically from the main crude gas flow directly after the waste heat boiler.
  • Quartz fiber filters for example, are suitable as fine filters 18 and 19 for this application.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (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

L'invention concerne un système de prélèvement longue durée pour surveiller en permanence les émissions de poussières et de substances nocives et pour déterminer l'émission de poussières de milieux fluides par prélèvement isocinétique d'un flux gazeux partiel du flux de gaz principal d'une source de pollution, au moyen d'une sonde (2) de prélèvement de flux partiel. Les poussières sont isolées par filtration du gâteau sur un filtre ultrafin (18, 19) et les matières chimiques volatiles (donc passant à travers le filtre) dissoutes dans le flux gazeux partiel sont séparées à un stade d'adsorption (23, 24). L'invention vise à modifier le système de prélèvement longue durée de sorte que, outre le prélèvement quantitatif continu sur une longue durée de poussières de milieux fluides, il soit possible de déterminer en continu la quantité de matières volatiles, donc qui traversent le filtre, avec optimisation de la limite de détection, qui est alors plus sensible, et réduction simultanée des coûts de mesure. A cet effet, le stade d'adsorption (23, 24), situé en aval du filtre ultrafin (18, 19), est traversé par la totalité du flux gazeux partiel pendant la surveillance continue.
PCT/EP2002/006240 2001-06-13 2002-06-07 Systeme de prelevement longue duree Ceased WO2002101361A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2003504074A JP2004530140A (ja) 2001-06-13 2002-06-07 長時間試料採取システム
EP02747349A EP1399725A1 (fr) 2001-06-13 2002-06-07 Systeme de prelevement longue duree

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10128632.5 2001-06-13
DE2001128632 DE10128632A1 (de) 2001-06-13 2001-06-13 Langzeitprobennahmesystem

Publications (1)

Publication Number Publication Date
WO2002101361A1 true WO2002101361A1 (fr) 2002-12-19

Family

ID=7688122

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/006240 Ceased WO2002101361A1 (fr) 2001-06-13 2002-06-07 Systeme de prelevement longue duree

Country Status (4)

Country Link
EP (1) EP1399725A1 (fr)
JP (1) JP2004530140A (fr)
DE (1) DE10128632A1 (fr)
WO (1) WO2002101361A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102103046A (zh) * 2011-01-25 2011-06-22 马鞍山钢铁股份有限公司 球胆取样装置及取样方法
CN107064420A (zh) * 2017-02-14 2017-08-18 中国科学院化学研究所 一种大气中中等挥发性有机物的在线监测系统及监测方法
CN110736689A (zh) * 2019-10-25 2020-01-31 陕西华筑科技有限公司 一种工程施工现场全天候扬尘在线监测系统
US20210156818A1 (en) * 2018-05-25 2021-05-27 Fieldpiece Instruments, Inc. Combustion Analyzer
CN117805323A (zh) * 2024-02-28 2024-04-02 铜川科达化工设备有限公司 基于物联网的置于电捕焦油器前的样气监测采样分析系统

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100491957C (zh) * 2003-04-16 2009-05-27 株式会社崛场制作所 颗粒状物质捕集用过滤膜、使用该过滤膜的取样器以及颗粒状物质的分析装置
FR2862386B1 (fr) * 2003-11-14 2006-03-03 Inst Francais Du Petrole Procede et dispositif pour prelever des composes gazeux contenus dans un courant gazeux, notamment dans des gaz d'echappement dilues d'un moteur a combustion interne
DE102008010764A1 (de) 2008-02-21 2009-08-27 Thumedi Gmbh & Co. Kg Vorrichtung und Verfahren zur Staubdetektion
DE102012103563A1 (de) * 2012-04-23 2013-10-24 Steag Powitec Gmbh Messvorrichtung für Staub in Rauchgas
DE102020113180B4 (de) 2020-05-15 2025-11-06 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Vorrichtung zur Probennahme aus einem Abgasmassenstrom

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3933431A (en) * 1974-07-23 1976-01-20 The United States Of America As Represented By The United States Energy Research And Development Administration Method and apparatus for sampling atmospheric mercury
DE4115212A1 (de) * 1991-05-10 1992-11-12 Kernforschungsz Karlsruhe Verfahren zur kontinuierlichen bestimmung von staubgehalten in stroemenden medien
US5493923A (en) * 1992-02-26 1996-02-27 Gfa Gesellschaft Zur Arbeitsplatz-Und Umweltanalytik Mbh Process and device for taking samples from waste gases
US5763360A (en) * 1994-02-02 1998-06-09 The Regents Of The University Of California Quantitative organic vapor-particle sampler
WO2000054022A1 (fr) * 1999-03-10 2000-09-14 Bm Becker Messtechnik Gmbh Procede et dispositif permettant de prelever des echantillons de gaz d'echappement

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DE4125555A1 (de) * 1991-08-02 1993-02-04 Rene Dr Cousin Probenahmeverfahren zur ueberwachung von adsorbierbaren abgasemissionen ueber grosse zeitraeume
DE19727969A1 (de) * 1997-07-02 1999-01-07 Volkswagen Ag Vorrichtung und Verfahren zur Lanzeitprobenahme für partikelgebundene und filtergängige metallische und metalloide Emissionen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3933431A (en) * 1974-07-23 1976-01-20 The United States Of America As Represented By The United States Energy Research And Development Administration Method and apparatus for sampling atmospheric mercury
DE4115212A1 (de) * 1991-05-10 1992-11-12 Kernforschungsz Karlsruhe Verfahren zur kontinuierlichen bestimmung von staubgehalten in stroemenden medien
US5493923A (en) * 1992-02-26 1996-02-27 Gfa Gesellschaft Zur Arbeitsplatz-Und Umweltanalytik Mbh Process and device for taking samples from waste gases
US5763360A (en) * 1994-02-02 1998-06-09 The Regents Of The University Of California Quantitative organic vapor-particle sampler
WO2000054022A1 (fr) * 1999-03-10 2000-09-14 Bm Becker Messtechnik Gmbh Procede et dispositif permettant de prelever des echantillons de gaz d'echappement

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102103046A (zh) * 2011-01-25 2011-06-22 马鞍山钢铁股份有限公司 球胆取样装置及取样方法
CN107064420A (zh) * 2017-02-14 2017-08-18 中国科学院化学研究所 一种大气中中等挥发性有机物的在线监测系统及监测方法
CN107064420B (zh) * 2017-02-14 2023-11-28 中国科学院化学研究所 一种大气中中等挥发性有机物的在线监测系统及监测方法
US20210156818A1 (en) * 2018-05-25 2021-05-27 Fieldpiece Instruments, Inc. Combustion Analyzer
US11788986B2 (en) * 2018-05-25 2023-10-17 Fieldpiece Instruments, Inc. Combustion analyzer
CN110736689A (zh) * 2019-10-25 2020-01-31 陕西华筑科技有限公司 一种工程施工现场全天候扬尘在线监测系统
CN117805323A (zh) * 2024-02-28 2024-04-02 铜川科达化工设备有限公司 基于物联网的置于电捕焦油器前的样气监测采样分析系统
CN117805323B (zh) * 2024-02-28 2024-04-26 铜川科达化工设备有限公司 基于物联网的置于电捕焦油器前的样气监测采样分析系统

Also Published As

Publication number Publication date
DE10128632A1 (de) 2003-01-02
JP2004530140A (ja) 2004-09-30
EP1399725A1 (fr) 2004-03-24

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