FR2426905A2 - Continuous automatic determn. of vinyl chloride in gas streams - by thermo-hydrolytic decomposition and determn. of the hydrogen chloride formed - Google Patents

Continuous automatic determn. of vinyl chloride in gas streams - by thermo-hydrolytic decomposition and determn. of the hydrogen chloride formed

Info

Publication number
FR2426905A2
FR2426905A2 FR7815024A FR7815024A FR2426905A2 FR 2426905 A2 FR2426905 A2 FR 2426905A2 FR 7815024 A FR7815024 A FR 7815024A FR 7815024 A FR7815024 A FR 7815024A FR 2426905 A2 FR2426905 A2 FR 2426905A2
Authority
FR
France
Prior art keywords
determn
vinyl chloride
degrees
gas
concn
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.)
Pending
Application number
FR7815024A
Other languages
French (fr)
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.)
Auergesellschaft GmbH
Original Assignee
Auergesellschaft 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 Auergesellschaft GmbH filed Critical Auergesellschaft GmbH
Priority to FR7815024A priority Critical patent/FR2426905A2/en
Publication of FR2426905A2 publication Critical patent/FR2426905A2/en
Pending 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
    • G01N33/0013—Sample conditioning by a chemical reaction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/416—Systems
    • G01N27/4162—Systems investigating the composition of gases, by the influence exerted on ionic conductivity in a liquid

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Immunology (AREA)
  • Molecular Biology (AREA)
  • Electrochemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

In a process for quantitative determn. of halohydrocarbon cpds. (I), esp. vinyl chloride in gases, a measured amt. of the gas is heated to 300-600 degrees C in the presence of steam and catalysts. The HCl formed is then taken up in a measured amt. of wash water such that it is totally absorbed, and the resulting ion concn. is used to estimate the concn. of (I). The appts. used consists of an inlet tube for the gas stream mounted concentrically inside an outer tube. A heating spiral of Pt or Pt alloy is wound round the outside of the inner gas inlet tube, over which the gas stream in the outer tube flows. The heating spiral is run at a temp. of >=700 degrees C esp. is approx. 750 degrees C to give an average operating temp. of 550-650 degrees C. Process allows continuous automatic monitoring of vinyl chloride content of gas streams and can be used e.g. to trip a warning signal if the vinyl chloride concn. rises above a predetermined level.
FR7815024A 1978-05-22 1978-05-22 Continuous automatic determn. of vinyl chloride in gas streams - by thermo-hydrolytic decomposition and determn. of the hydrogen chloride formed Pending FR2426905A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7815024A FR2426905A2 (en) 1978-05-22 1978-05-22 Continuous automatic determn. of vinyl chloride in gas streams - by thermo-hydrolytic decomposition and determn. of the hydrogen chloride formed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7815024A FR2426905A2 (en) 1978-05-22 1978-05-22 Continuous automatic determn. of vinyl chloride in gas streams - by thermo-hydrolytic decomposition and determn. of the hydrogen chloride formed

Publications (1)

Publication Number Publication Date
FR2426905A2 true FR2426905A2 (en) 1979-12-21

Family

ID=9208502

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7815024A Pending FR2426905A2 (en) 1978-05-22 1978-05-22 Continuous automatic determn. of vinyl chloride in gas streams - by thermo-hydrolytic decomposition and determn. of the hydrogen chloride formed

Country Status (1)

Country Link
FR (1) FR2426905A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0074013A1 (en) * 1981-08-31 1983-03-16 Kabushiki Kaisha Toshiba Cation emission type halogenated hydrocarbon gas detecting element

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0074013A1 (en) * 1981-08-31 1983-03-16 Kabushiki Kaisha Toshiba Cation emission type halogenated hydrocarbon gas detecting element
US4499054A (en) * 1981-08-31 1985-02-12 Tokyo Shibaura Denki Kabushiki Kaisha Cation emission type halogenated hydrocarbon gas detecting element

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