FI130825B1 - Method and apparatus for determining degree of breaking down of fiber particles into fines in pulp - Google Patents

Method and apparatus for determining degree of breaking down of fiber particles into fines in pulp

Info

Publication number
FI130825B1
FI130825B1 FI20175109A FI20175109A FI130825B1 FI 130825 B1 FI130825 B1 FI 130825B1 FI 20175109 A FI20175109 A FI 20175109A FI 20175109 A FI20175109 A FI 20175109A FI 130825 B1 FI130825 B1 FI 130825B1
Authority
FI
Finland
Prior art keywords
pulp
fines
breaking down
fiber particles
determining
Prior art date
Application number
FI20175109A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI20175109L (en
Inventor
Matti Törmänen
Ismo Joensuu
Original Assignee
Valmet Automation Oy
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 Valmet Automation Oy filed Critical Valmet Automation Oy
Priority to FI20175109A priority Critical patent/FI130825B1/en
Priority to PCT/FI2018/050083 priority patent/WO2018146379A1/en
Priority to SE1950920A priority patent/SE545617C2/en
Publication of FI20175109L publication Critical patent/FI20175109L/en
Application granted granted Critical
Publication of FI130825B1 publication Critical patent/FI130825B1/en

Links

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
    • G01N21/59—Transmissivity
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C7/00—Digesters
    • D21C7/12—Devices for regulating or controlling
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
    • G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
    • G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
    • G01N11/14—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/02—Investigating particle size or size distribution
    • G01N15/0205—Investigating particle size or size distribution by optical means
    • G01N15/0227—Investigating particle size or size distribution by optical means using imaging; using holography
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/06—Investigating concentration of particle suspensions
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/10—Investigating individual particles
    • G01N15/14—Optical investigation techniques, e.g. flow cytometry
    • 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
    • G01N21/21—Polarisation-affecting properties
    • 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
    • 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
    • G01N21/84—Systems specially adapted for particular applications
    • 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
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/85—Investigating moving fluids or granular solids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0009—Paper-making control systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
    • G01N2011/006—Determining flow properties indirectly by measuring other parameters of the system
    • G01N2011/008—Determining flow properties indirectly by measuring other parameters of the system optical properties
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N2015/0042—Investigating dispersion of solids
    • G01N2015/0053—Investigating dispersion of solids in liquids, e.g. trouble
    • 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
    • G01N21/21—Polarisation-affecting properties
    • G01N2021/217—Measuring depolarisation or comparing polarised and depolarised parts of 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
    • G01N21/84—Systems specially adapted for particular applications
    • G01N2021/8411—Application to online plant, process monitoring
    • G01N2021/8416—Application to online plant, process monitoring and process controlling, not otherwise provided for
    • 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
    • G01N21/84—Systems specially adapted for particular applications
    • G01N2021/8444—Fibrous material

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Electromagnetism (AREA)
  • Wood Science & Technology (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Crushing And Grinding (AREA)

Abstract

Determining a degree of breaking down of the fiber particles into fines in pulp is performed by transmitting (1000) optical radiation to the pulp (104); and determining (1002) the degree of breaking down of the fiber particles into fines in pulp (104) on the basis of a primary detection of optical powers of at least two different optical bands (106) interacted with the pulp (104), and at least one of the following secondary detections: polarization of optical radiation propagated through the pulp (104), a property of microwave radiation propagated through the pulp (104), a force caused by a movement between the pulp (104) and a material structure (400, 504, 506) in the pulp (104), and particles in at least one image of the pulp (104).
FI20175109A 2017-02-08 2017-02-08 Method and apparatus for determining degree of breaking down of fiber particles into fines in pulp FI130825B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI20175109A FI130825B1 (en) 2017-02-08 2017-02-08 Method and apparatus for determining degree of breaking down of fiber particles into fines in pulp
PCT/FI2018/050083 WO2018146379A1 (en) 2017-02-08 2018-02-06 Method and apparatus for determining degree of breaking down of fiber particles into fines in pulp
SE1950920A SE545617C2 (en) 2017-02-08 2018-02-06 Method and apparatus for determining degree of breaking down of fiber particles into fines in pulp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20175109A FI130825B1 (en) 2017-02-08 2017-02-08 Method and apparatus for determining degree of breaking down of fiber particles into fines in pulp

Publications (2)

Publication Number Publication Date
FI20175109L FI20175109L (en) 2018-08-09
FI130825B1 true FI130825B1 (en) 2024-04-09

Family

ID=63107281

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20175109A FI130825B1 (en) 2017-02-08 2017-02-08 Method and apparatus for determining degree of breaking down of fiber particles into fines in pulp

Country Status (3)

Country Link
FI (1) FI130825B1 (en)
SE (1) SE545617C2 (en)
WO (1) WO2018146379A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113960037A (en) * 2021-10-23 2022-01-21 新乡市中誉鼎力软件科技股份有限公司 Detection equipment and detection system for raw stone in sandstone aggregate production
FI130730B1 (en) * 2021-12-23 2024-02-15 Valmet Automation Oy A method and apparatus for controlling cellulose processing

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4171916A (en) * 1977-11-18 1979-10-23 Ishikawajima-Harima Heavy Industries Co., Ltd. Apparatus and method for measuring the consistency of a pulp suspension
SE450528B (en) * 1981-03-19 1987-06-29 Svenska Traeforskningsinst PROCEDURE FOR SEATING THE CONTENT OF CURRENCY IN PAPER Pulp
EP0262138A1 (en) * 1985-06-10 1988-04-06 Chemtronics Ab Method for measuring the fibre and filler concentration in the wet end of a paper machine and a control system using the method
FI91446C (en) * 1992-01-24 1994-06-27 Abb Stroemberg Drives Oy Method and plant for evaluating the freene number of refiner pulp
US5786894A (en) * 1996-10-25 1998-07-28 International Paper Company Measurement of paper pulp and fiber visual characteristics
CA2304201C (en) * 1997-09-18 2010-09-14 Alberta Research Council Inc. Analyzer for temperature sensitive colloidal mixtures
FI111102B (en) * 1997-09-22 2003-05-30 Metso Automation Oy Method for measuring particles in suspension and measuring device
DE19823695A1 (en) * 1998-05-27 1999-12-02 Voith Sulzer Papiertech Patent Method and measuring device for the quantitative detection of ingredients
FI115539B (en) * 2001-02-23 2005-05-31 Metso Automation Oy Method and apparatus for controlling in a paper machine or the corresponding short circulation
SE520297C2 (en) * 2001-11-28 2003-06-24 Holmen Ab Process and apparatus system for the extraction of liquid for analysis purposes from cellulose pulp with high pulp concentration
CA2568349C (en) * 2004-05-17 2013-07-16 Cidra Corporation Apparatus and method for measuring compositional parameters of a mixture
SE537725C2 (en) * 2013-04-02 2015-10-06 Btg Instr Ab Method for determining properties of heterogeneous media

Also Published As

Publication number Publication date
FI20175109L (en) 2018-08-09
WO2018146379A1 (en) 2018-08-16
SE1950920A1 (en) 2019-08-08
SE545617C2 (en) 2023-11-14

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