CA2304201C - 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
CA2304201C
CA2304201C CA2304201A CA2304201A CA2304201C CA 2304201 C CA2304201 C CA 2304201C CA 2304201 A CA2304201 A CA 2304201A CA 2304201 A CA2304201 A CA 2304201A CA 2304201 C CA2304201 C CA 2304201C
Authority
CA
Canada
Prior art keywords
colloidal
temperature
measurement
light
wavelength
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.)
Expired - Fee Related
Application number
CA2304201A
Other languages
English (en)
Other versions
CA2304201A1 (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
Original Assignee
Alberta Innovates
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 Alberta Innovates filed Critical Alberta Innovates
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

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Engineering & Computer Science (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
CA002216046A CA2216046A1 (fr) 1997-09-18 1997-09-18 Detecteur en ligne pour substances colloidales et dissoutes
CA2,216,046 1997-09-18
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 CA2304201A1 (fr) 1999-03-25
CA2304201C true 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)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI130825B1 (en) * 2017-02-08 2024-04-09 Valmet Automation Oy The method and device determine the degree of decomposition of fiber particles into fine matter in the pulp

Also Published As

Publication number Publication date
CA2304201A1 (fr) 1999-03-25

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20170918