DE4010482A1 - Minimising mist formation of flowing test gas - by relaxing pressure in cooled filter cavity with immediate absorption of evolved moisture - Google Patents

Minimising mist formation of flowing test gas - by relaxing pressure in cooled filter cavity with immediate absorption of evolved moisture

Info

Publication number
DE4010482A1
DE4010482A1 DE19904010482 DE4010482A DE4010482A1 DE 4010482 A1 DE4010482 A1 DE 4010482A1 DE 19904010482 DE19904010482 DE 19904010482 DE 4010482 A DE4010482 A DE 4010482A DE 4010482 A1 DE4010482 A1 DE 4010482A1
Authority
DE
Germany
Prior art keywords
gas
minimising
filter cavity
test gas
mist formation
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
DE19904010482
Other languages
German (de)
Inventor
Dieter Schweikert
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19904010482 priority Critical patent/DE4010482A1/en
Publication of DE4010482A1 publication Critical patent/DE4010482A1/en
Ceased legal-status Critical Current

Links

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
    • G01N33/0011—Sample conditioning
    • G01N33/0014—Sample conditioning by eliminating a 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
    • G01N1/2247—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
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2247—Sampling from a flowing stream of gas
    • G01N2001/227—Sampling from a flowing stream of gas separating gas from solid, e.g. filter
    • 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
    • G01N2001/2282—Devices for withdrawing samples in the gaseous state with cooling means
    • 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
    • G01N1/40—Concentrating samples
    • G01N1/4022—Concentrating samples by thermal techniques; Phase changes
    • G01N2001/4033—Concentrating samples by thermal techniques; Phase changes sample concentrated on a cold spot, e.g. condensation or distillation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Molecular Biology (AREA)
  • Biomedical Technology (AREA)
  • Combustion & Propulsion (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

To prevent formation of mist and aerosols in gas being cooled before delivery to a treatment unit or analyser, the gas is fed into a hollow filter body inside the cooling unit. In the filter cavity the gas pressure drops, with evolution of aerosols and mist. With pressure and temp. at normal levels, these materials are absorbed by the filter material, with the gas then leaving the cooler towards the test unit. ADVANTAGE - Falsified results and/or damage to appts. are avoided without complex further equipment.

Description

1. Bei installierten Meßgasaufbereitungsanlagen, h.i. Emissionseinrich­ tungen, bilden sich nach dem Kühlaggregat sehr häufig Nebel und Aero­ sole.1. With installed sample gas processing plants, h.i. Emission facility After the cooling unit, fog and aero form very often sole.

Die neue Kombination mit Filtereinheit im Kühlsystem soll es ermög­ lichen, in einer bestimmten Anordnung diese unerwünschte Nebenwir­ kung zu vermeiden.The new combination with filter unit in the cooling system should make it possible Lichen, these unwanted side effects in a certain arrangement avoidance.

2. Bei verschiedenen bereits vorhandenen Meßgasaufbereitungsanlagen wer­ den teilweise die Nebel und Aerosole durch sehr hohen Installations­ aufwand vermieden, wie z.B.2. Who at various existing sample gas processing plants partly the fog and aerosols due to very high installation avoided effort, e.g.

  • - Beheizung der Analysengeräte- Heating of the analysis devices
  • - Aufbereitung der Meßgase in einem Marmorofen- Preparation of the measuring gases in a marble oven
  • - Trocknung der Meßgase über Phosphatpentoxidabsorber u. v. m.- Drying the sample gases over phosphate pentoxide absorbers u. v. m.

3. Bei der neuen Anordnung werden die aufzubereitenden Meßgase (siehe Gaslaufplan) dem Gaskühler (2) zugeführt. Im Meßgaskühler (2) be­ findet sich ein Filter (3). Im Filter (3) wird zuerst das Meßgas entspannt. Durch die Entspannung bilden sich Nebel und Aerosole. Diese werden nun bei Druck- und Temperaturgleichheit anschließend im Filter (3) absorbiert.3. With the new arrangement, the sample gases to be prepared (see gas flow diagram) are fed to the gas cooler ( 2 ). In the sample gas cooler ( 2 ) there is a filter ( 3 ). The sample gas is first expanded in the filter ( 3 ). The relaxation creates fog and aerosols. If the pressure and temperature are the same, these are then absorbed in the filter ( 3 ).

Durch diese Kombination verläßt das Meßgas den Gaskühler weitgehend ohne Nebel- und Aerosolbildung.With this combination, the sample gas largely leaves the gas cooler without fog and aerosol formation.

Claims (3)

1. Nebel- und Aerosolvermeidung durch die Kombination Filtereinheit im Gaskühler.1. Avoidance of fog and aerosol through the combination of filter unit in the gas cooler. Durch o.a. Konstellation wird erreicht, daß die ankommenden Meß­ gase entspannt werden und anschließend unter Druck- und Tempera­ turgleichheit im Filter einer Absorbtion unterzogen werden. Somit entsteht weitgehend keine Bildung von Nebel und Aerosole.By o.a. Constellation is achieved that the incoming measurement gases are relaxed and then under pressure and tempera equality in the filter are subjected to absorption. This means that there is largely no formation of fog and aerosols. 2. Kombination Gaskühler - Filtereinheit nach Anspruch 1.2. Combination gas cooler - filter unit according to claim 1.
DE19904010482 1990-03-31 1990-03-31 Minimising mist formation of flowing test gas - by relaxing pressure in cooled filter cavity with immediate absorption of evolved moisture Ceased DE4010482A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19904010482 DE4010482A1 (en) 1990-03-31 1990-03-31 Minimising mist formation of flowing test gas - by relaxing pressure in cooled filter cavity with immediate absorption of evolved moisture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19904010482 DE4010482A1 (en) 1990-03-31 1990-03-31 Minimising mist formation of flowing test gas - by relaxing pressure in cooled filter cavity with immediate absorption of evolved moisture

Publications (1)

Publication Number Publication Date
DE4010482A1 true DE4010482A1 (en) 1990-12-20

Family

ID=6403533

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19904010482 Ceased DE4010482A1 (en) 1990-03-31 1990-03-31 Minimising mist formation of flowing test gas - by relaxing pressure in cooled filter cavity with immediate absorption of evolved moisture

Country Status (1)

Country Link
DE (1) DE4010482A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3761026A1 (en) * 2019-07-04 2021-01-06 Honeywell International Inc. Gas humidity reduction apparatus and method of using the same

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2536787A1 (en) * 1975-08-19 1977-03-03 Herman Geb Bruetting Margot Cooler and filter for dust-laden waste gases - with varying temps. includes regenerative heat exchanger for compensation
DE3139781A1 (en) * 1981-10-07 1983-04-21 Nyby Uddeholm AB, 64480 Torshälla Process and equipment for purifying a gas containing pollutants in vapour form
DE3339073A1 (en) * 1983-10-28 1985-05-09 Robert Bosch Gmbh, 7000 Stuttgart Method of analysing gas mixtures
DE3512854A1 (en) * 1984-04-12 1985-10-17 United States Department Of Energy, Washington, D.C. DEVICE AND METHOD FOR SAMPLING SUBMICRON PARTICLES
DE3610902A1 (en) * 1986-03-24 1986-11-20 Markus 8350 Plattling Schmalhofer Filter for filtering out fatty particles from a gas stream, in particular from kitchen exhaust air
DE3637546A1 (en) * 1986-11-04 1988-05-05 Siemens Ag SAMPLE PREPARATION FOR CONTINUOUS GAS ANALYSIS
DE3716350A1 (en) * 1987-05-15 1988-12-01 Groeger & Obst Mess Regeltech METHOD AND DEVICE FOR TREATING A GAS TO BE ANALYZED

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2536787A1 (en) * 1975-08-19 1977-03-03 Herman Geb Bruetting Margot Cooler and filter for dust-laden waste gases - with varying temps. includes regenerative heat exchanger for compensation
DE3139781A1 (en) * 1981-10-07 1983-04-21 Nyby Uddeholm AB, 64480 Torshälla Process and equipment for purifying a gas containing pollutants in vapour form
DE3339073A1 (en) * 1983-10-28 1985-05-09 Robert Bosch Gmbh, 7000 Stuttgart Method of analysing gas mixtures
DE3512854A1 (en) * 1984-04-12 1985-10-17 United States Department Of Energy, Washington, D.C. DEVICE AND METHOD FOR SAMPLING SUBMICRON PARTICLES
DE3610902A1 (en) * 1986-03-24 1986-11-20 Markus 8350 Plattling Schmalhofer Filter for filtering out fatty particles from a gas stream, in particular from kitchen exhaust air
DE3637546A1 (en) * 1986-11-04 1988-05-05 Siemens Ag SAMPLE PREPARATION FOR CONTINUOUS GAS ANALYSIS
DE3716350A1 (en) * 1987-05-15 1988-12-01 Groeger & Obst Mess Regeltech METHOD AND DEVICE FOR TREATING A GAS TO BE ANALYZED

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DE-Z: Chem.Ing.Tech. 52, Nr.1, 1980, S.39-45 *
DE-Z: Staub - Reinhaltung der Luft 48, 1988, S.203-208 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3761026A1 (en) * 2019-07-04 2021-01-06 Honeywell International Inc. Gas humidity reduction apparatus and method of using the same

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Legal Events

Date Code Title Description
OAV Applicant agreed to the publication of the unexamined application as to paragraph 31 lit. 2 z1
8122 Nonbinding interest in granting licenses declared
8101 Request for examination as to novelty
8105 Search report available
8125 Change of the main classification

Ipc: G01N 1/22

8110 Request for examination paragraph 44
8131 Rejection