CA2304201A1 - Analyseur pour melanges colloidaux sensibles a la temperature - Google Patents

Analyseur pour melanges colloidaux sensibles a la temperature Download PDF

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Publication number
CA2304201A1
CA2304201A1 CA002304201A CA2304201A CA2304201A1 CA 2304201 A1 CA2304201 A1 CA 2304201A1 CA 002304201 A CA002304201 A CA 002304201A CA 2304201 A CA2304201 A CA 2304201A CA 2304201 A1 CA2304201 A1 CA 2304201A1
Authority
CA
Canada
Prior art keywords
measurement
colloidal
temperature
light
colloidal mixture
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.)
Granted
Application number
CA002304201A
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English (en)
Other versions
CA2304201C (fr
Inventor
Theodore M. Garver
Kenneth Boegh
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.)
Alberta Innovates Technology Futures
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
Priority claimed from CA002216046A external-priority patent/CA2216046A1/fr
Application filed by Individual filed Critical Individual
Priority to CA2304201A priority Critical patent/CA2304201C/fr
Publication of CA2304201A1 publication Critical patent/CA2304201A1/fr
Application granted granted Critical
Publication of CA2304201C publication Critical patent/CA2304201C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
    • G01N21/534—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke by measuring transmission alone, i.e. determining opacity
    • 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
    • G01N33/18—Water
    • 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
    • G01N33/34—Paper
    • G01N33/343—Paper pulp

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)

Abstract

Divulgation d'une méthode et d'un appareil pour caractériser des colloïdes par mesures successives de l'atténuation ou de l'émission de la lumière par un mélange colloïdal à au moins deux températures et à au moins une longueur d'onde. La différence entre les mesures à deux températures ou plus, ou leur rapport, fournit une mesure de la stabilité des colloïdes en fonction de la température. La quantité de certains colloïdes organiques instables lors des variations de température peut être déterminée à partir de l'amplitude de la différence entre les mesures. Pour des mélanges appropriés, la présente méthode constitue un moyen de distinguer les composants de substances à base de colloïdes. La présente méthode peut être spécifiquement utilisée pour déterminer la stabilité et la concentration de brai colloïdal ou d'une résine de bois colloïdale dans l'eau de traitement d'un procédé de production de pâte ou du papier. Dans ce contexte, il peut être utilisé pour distinguer un brai colloïdal ou une résine de bois colloïdale du talc, de l'argile, du noir de carbone ou d'autres matières de charge.
CA2304201A 1997-09-18 1998-09-18 Analyseur pour melanges colloidaux sensibles a la temperature Expired - Fee Related CA2304201C (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2304201A CA2304201C (fr) 1997-09-18 1998-09-18 Analyseur pour melanges colloidaux sensibles a la temperature

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CA2,216,046 1997-09-18
CA002216046A CA2216046A1 (fr) 1997-09-18 1997-09-18 Detecteur en ligne pour substances colloidales et dissoutes
CA2304201A CA2304201C (fr) 1997-09-18 1998-09-18 Analyseur pour melanges colloidaux sensibles a la temperature
PCT/CA1998/000871 WO1999014577A1 (fr) 1997-09-18 1998-09-18 Analyseur pour melanges colloidaux sensibles a la temperature

Publications (2)

Publication Number Publication Date
CA2304201A1 true CA2304201A1 (fr) 1999-03-25
CA2304201C CA2304201C (fr) 2010-09-14

Family

ID=25679622

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2304201A Expired - Fee Related CA2304201C (fr) 1997-09-18 1998-09-18 Analyseur pour melanges colloidaux sensibles a la temperature

Country Status (1)

Country Link
CA (1) CA2304201C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018146379A1 (fr) * 2017-02-08 2018-08-16 Valmet Automation Oy Procédé et appareil pour déterminer le degré de dissociation de particules de fibre en fines dans de la pâte

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018146379A1 (fr) * 2017-02-08 2018-08-16 Valmet Automation Oy Procédé et appareil pour déterminer le degré de dissociation de particules de fibre en fines dans de la pâte
SE545617C2 (en) * 2017-02-08 2023-11-14 Valmet Automation Oy Method and apparatus for determining degree of breaking down of fiber particles into fines in pulp

Also Published As

Publication number Publication date
CA2304201C (fr) 2010-09-14

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Effective date: 20170918