WO2017001541A1 - Verdünnerzelle zum entfernen von flüchtigen partikeln aus einem probengas - Google Patents
Verdünnerzelle zum entfernen von flüchtigen partikeln aus einem probengas Download PDFInfo
- Publication number
- WO2017001541A1 WO2017001541A1 PCT/EP2016/065254 EP2016065254W WO2017001541A1 WO 2017001541 A1 WO2017001541 A1 WO 2017001541A1 EP 2016065254 W EP2016065254 W EP 2016065254W WO 2017001541 A1 WO2017001541 A1 WO 2017001541A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dilution air
- evaporator
- sample gas
- air line
- thinner cell
- 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
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
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
-
- 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
- G01N1/2252—Sampling from a flowing stream of gas in a vehicle exhaust
-
- 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
- G01N1/38—Diluting, dispersing or mixing samples
-
- 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
- G01N33/0011—Sample conditioning
- G01N33/0018—Sample conditioning by diluting a gas
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/10—Testing internal-combustion engines by monitoring exhaust gases or combustion flame
- G01M15/102—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases
-
- 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
- G01N1/2252—Sampling from a flowing stream of gas in a vehicle exhaust
- G01N2001/2255—Sampling from a flowing stream of gas in a vehicle exhaust with dilution of the sample
Definitions
- the subject invention relates to a thinner cell for removing volatile particles from a sample gas which is charged with volatile and solid particles, wherein provided in a heated body of the thinner cell connected to a supply line for the sample gas evaporator and downstream of the evaporator at least one catalyst and the evaporator heats the sample gas to convert the volatile particles to the gas phase and the catalyst removes the gaseous phase-transferred volatile particles.
- a compact devolatilization device is placed in a neat gas stream charged with volatile and solid particles, e.g. an aerosol, forth.
- a gas stream occurs in particular in the form of exhaust gas of an internal combustion engine.
- a gas analyzer e.g. To be able to analyze a particle counter for determining the particle concentration, the volatile particles must be removed in order to prevent falsification of the measurement result caused by these particles.
- the volatile particles are first heated in an evaporator and thereby converted into the gas phase. The evaporator is followed downstream by a catalyst in which the volatile particles transferred to the gas phase are removed.
- a thinner cell for removing volatile particles from a gas stream must be very compact and light in order to accommodate them on the vehicle and by the weight of the device, the normal behavior of the Vehicle too strong to influence. Due to these requirements, the size of the device should be reduced as much as possible. Additional components for heating the supplied dilution air are therefore counterproductive, since they increase both the size and the weight. Apart from that, it is desirable for mobile applications to keep the power consumption of a device for removing volatile particles as low as possible, since the required power is available across large and heavy batteries must be provided or provided by the vehicle. Also in this aspect, additional components for heating the added dilution air in mobile applications are counterproductive.
- a first diluter unit is arranged, which is connected to a dilution air line for supplying dilution air, wherein the dilution air duct is at least partially disposed in the heated base body.
- This arrangement of the dilution air line in the heated base body ensures that the supplied dilution air is automatically heated by the base body and the sample gas for dilution preheated air is supplied.
- additional components for controlling the temperature of the dilution air can be saved, which makes it possible in particular, the thinner cell very compact and lightweight, and thus also in mobile applications used and movable with vehicles to build. This further makes it possible to reduce the power consumption for heating the dilution air.
- the main body can be heated easily if at least one heating element recess is provided in the main body, in which at least one heating element is arranged to heat the main body.
- This embodiment also makes it possible to easily exchange the heating elements without having to dismantle the main body when the heating element recess is open at one axial end and accessible from the outside.
- several Schuelementausnaturalept and heating elements can be provided. For a particularly good heating of the supplied dilution air is provided to arrange the SchuelementausEnglishung in the body between an air line recess in which the dilution air line is arranged, and a component recess in which the evaporator and the catalyst are arranged.
- the component recess and the air line recess are arranged substantially in parallel, on the one hand a particularly compact design of the thinner cell can be realized.
- essentially the entire axial length of the main body can thus be used for heating the dilution air, with which good air heating can be achieved.
- the surface overflow in the dilution air duct is increased and a more efficient heat transfer is possible.
- turbulence in the flow of the dilution air are introduced, which allow an additional improved heating of the air. Both increases and improves the heat transfer from the heated body to the dilution air.
- elevations are thus provided on the inner surface of the dilution air line, which are aligned radially inwardly in the direction of the line center.
- the radially projecting elevations, which are provided on the inner wall of the dilution air line are arranged at least in sections in the regions of the dilution air line arranged within the heated base body.
- the axial length of the thinner cell can be shortened if the flow direction of the dilution air through the dilution air line is opposite to the flow direction of the sample gas through the evaporator and the at least one catalyst.
- FIG. 3 shows a detailed view of the dilution air line.
- FIG. 1 shows an advantageous embodiment of the diluter cell 1 according to the invention for removing the volatile particles (eg hydrocarbons, S0 3 , H 2 S0 4 , as typically contained in an exhaust gas of an internal combustion engine) from a sample gas containing volatile and solid particles ,
- the device comprises an evaporator 2 and a catalyst 3 arranged downstream thereof, it also being possible for a plurality of catalysts 3 to be arranged one behind the other and / or in parallel.
- the catalyst 3 can, as in the
- a supply line 4 of the thinner cell 1 sample gas for example, exhaust gas of an internal combustion engine is supplied.
- any gas supply can be connected.
- the sample gas is supplied to a first diluter unit 5, in which the sample gas is diluted with dilution air.
- the diluted sample gas flows from the first diluter unit 5 into the evaporator 2, in which the volatile constituents of the sample gas are converted into the gas phase, ie volatilized.
- These volatilized particles are removed in the subsequent at least one catalyst 3 by a catalytic reaction.
- a second diluent unit 6 is arranged, in which the effluent from the catalyst 3 diluted and devolatilized sample gas is diluted once more with dilution air.
- the second diluter unit 6 is optional and may be omitted.
- the thus purified sample gas is discharged via a discharge line 7 from the thinner cell 1.
- any gas discharge can be connected, for example, a connection line to a gas analyzer, such as a particle counter, for the analysis of the processed sample gas.
- the first diluter unit 5, the evaporator 2 and the catalyst 3 are arranged in a first, heated part of the device 1.
- a heated base body 8 (one-piece or multi-part), for example made of stainless steel or aluminum, may be provided, in which these components are arranged.
- the heated base body 8 can also be encased by a thermal insulation 9.
- the second diluter unit 6 is optionally arranged in a second unheated part of the thinner cell 1, in particular to allow a second dilution with unheated dilution air.
- a supply of dilution air to the second diluent unit 6 likewise branches off from the dilution air line 13 in the unheated part of the diluter cell 1.
- the first and second diluter unit 5, 6 are executed in the embodiment shown as per se known thinner with porous gas lines.
- the supply line 4 or the discharge line 7 is made porous over a certain length, for example in the form of a plurality of holes in the jacket of the respective line.
- This porous portion of the supply line 4 or the discharge line 7 is surrounded by a closed cavity 12, in which the dilution air is supplied under pressure.
- a dilution air line 13 can open into the respective cavity 12, to which an arbitrary air supply can be connected.
- a metering valve 14 Before the respective cavity can be arranged in the dilution air line 13 and a metering valve 14 in order to regulate the amount of the supplied dilution air can.
- the execution of the diluting units 5, 6 with porous lines is only an example and it can be used in principle any suitable thinner, even different diluents.
- heating elements 10, 1 1 are arranged, with which the base body 8 is heated. It can e.g. a first heating element 1 1 for tempering the eva- porators 2 and a second heating element 10 for tempering the catalyst 3 may be arranged.
- the heating elements 10, 1 1 are preferably designed as well-known electric heating cartridges.
- the evaporator 2 is typically heated to a temperature range of 150 ° C to 400 ° C.
- the catalyst 3 is typically also heated to a temperature range of 150 ° C to 400 ° C.
- a part of the base body 8 is shown in an advantageous embodiment.
- the main body 8 is made in two parts, divided along a longitudinal plane.
- the main body 8 is formed from two such parts adjoining one another at the longitudinal plane.
- the evaporator 2 and the catalyst 3 are arranged in a component recess 20 of the main body 8.
- a SchuelementausNOung 22 at least one of the heating elements 10, 1 1 is arranged.
- a further heating element 10, 1 1 may be arranged.
- the dilution air line 13 is arranged in an air line recess 21, the dilution air line 13 is arranged. The dilution air line 13 thus runs at least partially in the base body 8.
- the air line recess 21 runs essentially parallel to the component recess 20.
- a parallel arrangement means here that the longitudinal axes extend essentially parallel in the direction of the greatest longitudinal extent of the component recess 20 and the air line recess 21.
- the heating element recess 22, or the heating element recesses 22, are preferably arranged between the component recess 20 and the air line recess 21.
- a thinner recess 23 is provided, in which the first thinner unit 5 is arranged.
- the Schuelementaus Principleung 22 is preferably open at one axial end and freely accessible.
- heating elements 10, 11 can be easily pushed into the heating element recess 22 and fixed therein at the desired axial position.
- the heating elements 10, 11 may also be arranged at different axial positions in the heating element recesses 22.
- a first heating element 1 1 can be arranged at the axial height of the evaporator 2 and a second heating element 10 at the axial height of the catalyst 3.
- the dilution air line 13 is preferably arranged in the longitudinal direction of the diluter cell 1, that is to say parallel to the component recess 20.
- the dilution air is typically heated to a temperature of greater than 150 ° C.
- the processed sample gas emerging from the diluter cell 1 at the discharge line 7 is to be cooled to lower temperatures so that the sample gas can be supplied to downstream devices, such as a gas analyzer or a particle counter.
- the cooling can be carried out in the case of a second dilution unit 6 by cool dilution air for the dilution.
- the temperature of the sample gas diluted and cooled in the second diluent unit 6 does not fall below 60 ° C. in order to reduce condensation and artifact formation in the sample gas, for example by the formation of nucleation of volatile particles in the sample gas. This can be achieved, for example, in which also the second dilution unit 6 appropriately tempered dilution air is used.
- the heat transfer between the base body 8, or between dilution air line 13 disposed therein, and the supplied dilution air can be improved if the dilution air line 13 is not smooth on the inner wall, but at least partially provided with a plurality of radially inwardly protruding elevations 24, as shown in a detailed view in Figure 3.
- the elevations 24 are preferably provided in sections of the dilution air line 13, which extend within the main body 8.
- the bumps 24 may be e.g. be designed as ribs or grooves or internal thread, the shape of the surveys is irrelevant.
- the overflowed surface in the dilution air line 13 is increased, whereby the heat transfer is improved.
- turbulences are introduced by the elevations into the throughflowing dilution air, which also helps to improve the heat transfer from the main body 8 to the dilution air.
- the evaporator 2 is essentially formed by an evaporator tube 15. At the downstream end of the evaporator tube 15, the catalyst 3 connects. At the upstream end, the feed line 4 opens into the evaporator 2. For this purpose, a transition region 24 is provided on the evaporator tube 15, along which the feed line 4 rises conically from the small flow cross section of the feed line 4 to the larger flow cross section of the evaporator tube 15. In order to ensure a better and more uniform heating of the sample gas in the evaporator 2, the evaporator tube 15 can also be arranged an evaporator core 16, which has a plurality of radially projecting webs, which are in thermally conductive contact with the heated base body 8.
- the Evaporatorkern 16 is mitbenningt about the heated base body 8.
- the heated surface of the evaporator 2, via which the sample gas flowing through, is increased by the Evaporator 16.
- the sample gas is thus heated more uniformly.
- the evaporator 2 can also be made shorter at a certain flow speed, since a larger heating surface is available.
- the evaporator core 21 can also be designed so that turbulences in the flow of the sample gas are largely avoided.
- The- turbulence is disadvantageous since it can lead to deposits of the particles contained in the sample gas on the walls of the supply line 4 and / or the Evaporatorrohres 15. Such deposits falsify subsequent gas analyzes of the sample gas and lead to contamination of the thinner cell 1 and are therefore undesirable in principle.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Combustion & Propulsion (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112016002998.5T DE112016002998A5 (de) | 2015-06-30 | 2016-06-30 | Verdünnerzelle zum entfernen von flüchtigen partikeln aus einem probengas |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA50568/2015A AT517405B1 (de) | 2015-06-30 | 2015-06-30 | Verdünnerzelle zum Entfernen von flüchtigen Partikeln aus einem Probengas |
| ATA50568/2015 | 2015-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2017001541A1 true WO2017001541A1 (de) | 2017-01-05 |
Family
ID=56292730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2016/065254 Ceased WO2017001541A1 (de) | 2015-06-30 | 2016-06-30 | Verdünnerzelle zum entfernen von flüchtigen partikeln aus einem probengas |
Country Status (3)
| Country | Link |
|---|---|
| AT (1) | AT517405B1 (de) |
| DE (1) | DE112016002998A5 (de) |
| WO (1) | WO2017001541A1 (de) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4974455A (en) * | 1989-08-29 | 1990-12-04 | Lear Siegler Measurement Controls Corporation | Dilution extractive probe |
| US5297432A (en) * | 1991-11-12 | 1994-03-29 | United Sciences, Inc. | Vacuum dilution extraction gas sampling method |
| WO1997012221A1 (en) * | 1995-09-29 | 1997-04-03 | Horiba Instruments, Inc. | Method and apparatus for providing diluent gas to exhaust emission analyzer |
| EP1677107A2 (de) * | 2004-11-30 | 2006-07-05 | Horiba, Ltd. | Abgasanalysegerät |
| AT10541U2 (de) * | 2009-01-13 | 2009-05-15 | Avl List Gmbh | Vorrichtung zur bestimmung der konzentration von feststoffpartikeln |
| DE202013100053U1 (de) * | 2012-09-28 | 2013-03-04 | Avl List Gmbh | Vorrichtung zur Entfernung der flüchtigen Partikel aus einem Probengas |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU894428A1 (ru) * | 1980-04-29 | 1981-12-30 | Предприятие П/Я Р-6900 | Пробоотборное устройство (варианты) |
| JP3785963B2 (ja) * | 2001-08-08 | 2006-06-14 | 三菱ふそうトラック・バス株式会社 | 部分希釈装置 |
| US7141090B2 (en) * | 2003-03-28 | 2006-11-28 | Avl North America Inc. | Active filter temperature control |
| FR2991770B1 (fr) * | 2012-06-11 | 2017-08-11 | Ecomesure | Procede de conditionnement d'un echantillon de melange gazeux transitant dans une canalisation et dispositif correspondant |
| JP6093654B2 (ja) * | 2013-06-03 | 2017-03-08 | 株式会社堀場製作所 | 排ガスサンプリング装置 |
-
2015
- 2015-06-30 AT ATA50568/2015A patent/AT517405B1/de not_active IP Right Cessation
-
2016
- 2016-06-30 DE DE112016002998.5T patent/DE112016002998A5/de not_active Withdrawn
- 2016-06-30 WO PCT/EP2016/065254 patent/WO2017001541A1/de not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4974455A (en) * | 1989-08-29 | 1990-12-04 | Lear Siegler Measurement Controls Corporation | Dilution extractive probe |
| US5297432A (en) * | 1991-11-12 | 1994-03-29 | United Sciences, Inc. | Vacuum dilution extraction gas sampling method |
| WO1997012221A1 (en) * | 1995-09-29 | 1997-04-03 | Horiba Instruments, Inc. | Method and apparatus for providing diluent gas to exhaust emission analyzer |
| EP1677107A2 (de) * | 2004-11-30 | 2006-07-05 | Horiba, Ltd. | Abgasanalysegerät |
| AT10541U2 (de) * | 2009-01-13 | 2009-05-15 | Avl List Gmbh | Vorrichtung zur bestimmung der konzentration von feststoffpartikeln |
| DE202013100053U1 (de) * | 2012-09-28 | 2013-03-04 | Avl List Gmbh | Vorrichtung zur Entfernung der flüchtigen Partikel aus einem Probengas |
Non-Patent Citations (1)
| Title |
|---|
| FAN XU ET AL: "Effects of a Catalytic Volatile Particle Remover (VPR) on the Particulate Matter Emissions from a Direct Injection Spark Ignition Engine", ENVIRONMENTAL SCIENCE & TECHNOLOGY, vol. 45, no. 20, 15 October 2011 (2011-10-15), US, pages 9036 - 9043, XP055303261, ISSN: 0013-936X, DOI: 10.1021/es2008209 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112016002998A5 (de) | 2018-03-15 |
| AT517405B1 (de) | 2017-04-15 |
| AT517405A1 (de) | 2017-01-15 |
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