EP4146860A4 - Verfahren und vorrichtung zum zerfasern von holzspänen und rücklaufdampfrohr für eine solche vorrichtung - Google Patents

Verfahren und vorrichtung zum zerfasern von holzspänen und rücklaufdampfrohr für eine solche vorrichtung Download PDF

Info

Publication number
EP4146860A4
EP4146860A4 EP21800183.2A EP21800183A EP4146860A4 EP 4146860 A4 EP4146860 A4 EP 4146860A4 EP 21800183 A EP21800183 A EP 21800183A EP 4146860 A4 EP4146860 A4 EP 4146860A4
Authority
EP
European Patent Office
Prior art keywords
steam pipe
wood chips
return steam
defibrating wood
defibrating
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
EP21800183.2A
Other languages
English (en)
French (fr)
Other versions
EP4146860A1 (de
Inventor
Thommy LINDBLOM
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.)
Valmet Technologies Oy
Valmet AB
Original Assignee
Valmet Oy
Valmet AB
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 Oy, Valmet AB filed Critical Valmet Oy
Publication of EP4146860A1 publication Critical patent/EP4146860A1/de
Publication of EP4146860A4 publication Critical patent/EP4146860A4/de
Pending legal-status Critical Current

Links

Classifications

    • 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
    • D21D1/20—Methods of refining
    • D21D1/30—Disc mills
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/14—Disintegrating in mills

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
EP21800183.2A 2020-05-07 2021-03-26 Verfahren und vorrichtung zum zerfasern von holzspänen und rücklaufdampfrohr für eine solche vorrichtung Pending EP4146860A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE2050526A SE543857C2 (en) 2020-05-07 2020-05-07 Method and apparatus for defibrating wood chips, and a return steam pipe for such an apparatus
PCT/SE2021/050271 WO2021225490A1 (en) 2020-05-07 2021-03-26 Method and apparatus for defibrating wood chips, and a return steam pipe for such an apparatus.

Publications (2)

Publication Number Publication Date
EP4146860A1 EP4146860A1 (de) 2023-03-15
EP4146860A4 true EP4146860A4 (de) 2024-06-26

Family

ID=77176632

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21800183.2A Pending EP4146860A4 (de) 2020-05-07 2021-03-26 Verfahren und vorrichtung zum zerfasern von holzspänen und rücklaufdampfrohr für eine solche vorrichtung

Country Status (3)

Country Link
EP (1) EP4146860A4 (de)
SE (1) SE543857C2 (de)
WO (1) WO2021225490A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB974857A (en) * 1959-12-15 1964-11-11 Douglas George Unthank Apparatus for the removal of volatile and gaseous components occluded in oils
US3441227A (en) * 1966-12-22 1969-04-29 Sprout Waldron & Co Inc Refiner feeder
US4082233A (en) * 1975-06-04 1978-04-04 Rolf Bertil Reinhall Disc refiner having means for removing gaseous media from pulp stock

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB515944A (en) * 1937-06-12 1939-12-19 Hermann Basler Apparatus for disintegrating vegetable fibrous materials
SE386694B (sv) * 1973-09-06 1976-08-16 Sca Development Ab Sett for behandling av fibermaterial varvid fibermaterialet forst forvermes med anga i ett forvermarkerl
SE417130C (sv) * 1979-08-22 1987-07-13 Bahco Ventilation Ab Sett att utvinna hogverdig anga vid raffinering av fibermaterial
FI60416C (fi) * 1979-12-04 1982-01-11 Enso Gutzeit Oy Foerfarande att framstaella traemassa mekaniskt av traeflis
FI124619B (fi) * 2013-04-12 2014-11-14 Valmet Technologies Inc Järjestely ja menetelmä kuitumassan syöttämiseksi dispergaattoriin

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB974857A (en) * 1959-12-15 1964-11-11 Douglas George Unthank Apparatus for the removal of volatile and gaseous components occluded in oils
US3441227A (en) * 1966-12-22 1969-04-29 Sprout Waldron & Co Inc Refiner feeder
US4082233A (en) * 1975-06-04 1978-04-04 Rolf Bertil Reinhall Disc refiner having means for removing gaseous media from pulp stock

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2021225490A1 *

Also Published As

Publication number Publication date
SE2050526A1 (en) 2021-08-17
EP4146860A1 (de) 2023-03-15
WO2021225490A1 (en) 2021-11-11
SE543857C2 (en) 2021-08-17

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Ipc: D21B 1/14 20060101AFI20240521BHEP