SE543857C2 - Method and apparatus for defibrating wood chips, and a return steam pipe for such an apparatus - Google Patents

Method and apparatus for defibrating wood chips, and a return steam pipe for such an apparatus

Info

Publication number: SE543857C2
Authority: SE; Sweden
Prior art keywords: pipe; steam; preheater; retum; wood chips
Prior art date: 2020-05-07

Application number

SE2050526A

Other languages

English (en)

Swedish (sv)

Other versions

SE2050526A1 (en

Inventor

Thommy Lindblom

Original Assignee

Valmet 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.)

2020-05-07

Filing date

2020-05-07

Publication date

2021-08-17

2020-05-07 Application filed by Valmet Oy filed Critical Valmet Oy

2020-05-07 Priority to SE2050526A priority Critical patent/SE543857C2/en

2021-03-26 Priority to PCT/SE2021/050271 priority patent/WO2021225490A1/fr

2021-03-26 Priority to EP21800183.2A priority patent/EP4146860A4/fr

2021-08-17 Publication of SE2050526A1 publication Critical patent/SE2050526A1/en

2021-08-17 Publication of SE543857C2 publication Critical patent/SE543857C2/en

Links

239000002023 wood Substances 0.000 title claims abstract description 89
238000000034 method Methods 0.000 title claims abstract description 21
238000004140 cleaning Methods 0.000 claims abstract description 83
229920002522 Wood fibre Polymers 0.000 abstract description 2
239000002025 wood fiber Substances 0.000 abstract description 2
239000007789 gas Substances 0.000 description 29
238000010025 steaming Methods 0.000 description 8
230000000694 effects Effects 0.000 description 7
239000002253 acid Substances 0.000 description 2
238000010276 construction Methods 0.000 description 2
230000001276 controlling effect Effects 0.000 description 2
230000001419 dependent effect Effects 0.000 description 2
229920005610 lignin Polymers 0.000 description 2
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
235000014820 Galium aparine Nutrition 0.000 description 1
240000005702 Galium aparine Species 0.000 description 1
241000446313 Lamella Species 0.000 description 1
230000007717 exclusion Effects 0.000 description 1
230000009477 glass transition Effects 0.000 description 1
238000010438 heat treatment Methods 0.000 description 1
238000003780 insertion Methods 0.000 description 1
230000037431 insertion Effects 0.000 description 1
239000000463 material Substances 0.000 description 1
238000012986 modification Methods 0.000 description 1
230000004048 modification Effects 0.000 description 1
238000007670 refining Methods 0.000 description 1
230000001105 regulatory effect Effects 0.000 description 1
238000000926 separation method Methods 0.000 description 1
239000011122 softwood Substances 0.000 description 1
239000000126 substance Substances 0.000 description 1

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)

SE2050526A 2020-05-07 2020-05-07 Method and apparatus for defibrating wood chips, and a return steam pipe for such an apparatus SE543857C2 (en)

Priority Applications (3)

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 (fr)	2020-05-07	2021-03-26	Procédé et appareil pour défibrage de copeaux de bois et tuyau de vapeur de retour destiné à un tel appareil
EP21800183.2A EP4146860A4 (fr)	2020-05-07	2021-03-26	Procédé et appareil pour défibrage de copeaux de bois et tuyau de vapeur de retour destiné à un tel appareil

Applications Claiming Priority (1)

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

Publications (2)

Publication Number	Publication Date
SE2050526A1 SE2050526A1 (en)	2021-08-17
SE543857C2 true SE543857C2 (en)	2021-08-17

Family

ID=77176632

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
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

Country Status (3)

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

Citations (7)

* 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
US3441227A (en) *	1966-12-22	1969-04-29	Sprout Waldron & Co Inc	Refiner feeder
US3921918A (en) *	1973-09-06	1975-11-25	Sca Development Ab	Mechanical refining of fiber material including steam recycle
US4082233A (en) *	1975-06-04	1978-04-04	Rolf Bertil Reinhall	Disc refiner having means for removing gaseous media from pulp stock
SE417130B (sv) *	1979-08-22	1981-02-23	Bahco Ventilation Ab	Sett att utvinna hogverdig anga vid raffinering av fibermaterial samt anordning for settets genomforande
CA1125077A (fr) *	1979-12-04	1982-06-08	Erkki Valkama	Methode et installation mecaniques de broyage de copeaux de bois
FI124619B (fi) *	2013-04-12	2014-11-14	Valmet Technologies Inc	Järjestely ja menetelmä kuitumassan syöttämiseksi dispergaattoriin

Family Cites Families (1)

* 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

2020
- 2020-05-07 SE SE2050526A patent/SE543857C2/en unknown
2021
- 2021-03-26 WO PCT/SE2021/050271 patent/WO2021225490A1/fr not_active Ceased
- 2021-03-26 EP EP21800183.2A patent/EP4146860A4/fr active Pending

Patent Citations (7)

* 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
US3441227A (en) *	1966-12-22	1969-04-29	Sprout Waldron & Co Inc	Refiner feeder
US3921918A (en) *	1973-09-06	1975-11-25	Sca Development Ab	Mechanical refining of fiber material including steam recycle
US4082233A (en) *	1975-06-04	1978-04-04	Rolf Bertil Reinhall	Disc refiner having means for removing gaseous media from pulp stock
SE417130B (sv) *	1979-08-22	1981-02-23	Bahco Ventilation Ab	Sett att utvinna hogverdig anga vid raffinering av fibermaterial samt anordning for settets genomforande
CA1125077A (fr) *	1979-12-04	1982-06-08	Erkki Valkama	Methode et installation mecaniques de broyage de copeaux de bois
FI124619B (fi) *	2013-04-12	2014-11-14	Valmet Technologies Inc	Järjestely ja menetelmä kuitumassan syöttämiseksi dispergaattoriin

Also Published As

Publication number	Publication date
SE2050526A1 (en)	2021-08-17
EP4146860A1 (fr)	2023-03-15
EP4146860A4 (fr)	2024-06-26
WO2021225490A1 (fr)	2021-11-11

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