FI91896C - Menetelmä happivalkaisun yhteydessä - Google Patents

Menetelmä happivalkaisun yhteydessä Download PDF

Info

Publication number
FI91896C
FI91896C FI894949A FI894949A FI91896C FI 91896 C FI91896 C FI 91896C FI 894949 A FI894949 A FI 894949A FI 894949 A FI894949 A FI 894949A FI 91896 C FI91896 C FI 91896C
Authority
FI
Finland
Prior art keywords
temperature
zone
pulp
delignification zone
oxygen
Prior art date
Application number
FI894949A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI894949A0 (fi
FI91896B (fi
Inventor
Aoke Backlund
Original Assignee
Kamyr 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 Kamyr Ab filed Critical Kamyr Ab
Publication of FI894949A0 publication Critical patent/FI894949A0/fi
Application granted granted Critical
Publication of FI91896B publication Critical patent/FI91896B/fi
Publication of FI91896C publication Critical patent/FI91896C/fi

Links

Classifications

    • 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
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FI894949A 1988-10-18 1989-10-18 Menetelmä happivalkaisun yhteydessä FI91896C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8803705 1988-10-18
SE8803705A SE467582B (sv) 1988-10-18 1988-10-18 Saett vid oxygenblekning

Publications (3)

Publication Number Publication Date
FI894949A0 FI894949A0 (fi) 1989-10-18
FI91896B FI91896B (fi) 1994-05-13
FI91896C true FI91896C (fi) 1994-08-25

Family

ID=20373661

Family Applications (1)

Application Number Title Priority Date Filing Date
FI894949A FI91896C (fi) 1988-10-18 1989-10-18 Menetelmä happivalkaisun yhteydessä

Country Status (4)

Country Link
JP (1) JPH02145883A (ja)
CA (1) CA1337843C (ja)
FI (1) FI91896C (ja)
SE (1) SE467582B (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE510740C2 (sv) * 1996-11-26 1999-06-21 Sunds Defibrator Ind Ab Styrning av syrgasdelignifiering
SE522593C2 (sv) * 1999-07-06 2004-02-24 Kvaerner Pulping Tech System och förfarande för syragasdelignifiering av massa av lignocellulosahaltigt material
RU2479619C2 (ru) * 2009-11-17 2013-04-20 Феликс Фердинандович Аухадеев Пульсационное устройство для делигнификации целлюлозосодержащего растительного сырья и способ его работы

Also Published As

Publication number Publication date
SE8803705L (sv) 1990-04-19
FI894949A0 (fi) 1989-10-18
FI91896B (fi) 1994-05-13
SE467582B (sv) 1992-08-10
SE8803705D0 (sv) 1988-10-18
JPH02145883A (ja) 1990-06-05
CA1337843C (en) 1996-01-02

Similar Documents

Publication Publication Date Title
FI59434B (fi) Delignifiering och blekning av cellulosa med syre
EP0030158B1 (en) Apparatus and process for medium consistency oxygen delignification of pulp
US4198266A (en) Oxygen delignification of wood pulp
HU205175B (en) Method for chlorie-free bleaching celluloses
US6024837A (en) Low temperature gas phase continuous digester
US5217575A (en) Process for oxygen bleaching using two vertical reactors
EP0476230B1 (en) Extended kraft cooking with white liquor added to wash circulation
EP0937813B1 (en) A method of controlling the pressure of a vertical continuous digester
EP0056263B1 (en) A method for improving the washing of cellulose pulps produced from lignocellulosic material
JP7292296B2 (ja) 溶解パルプの製造方法
FI91896C (fi) Menetelmä happivalkaisun yhteydessä
NO324111B1 (no) Fremgangsmate for forlenget oksygendelignifisering av lignocelluloseholdig masse i to trinn
US5824188A (en) Method of controlling the pressure of a continuous digester using an extraction-dilution
FI74053C (fi) Foerfarande foer delignifiering av kemisk massa.
EP0106609A1 (en) Apparatus and method for oxygen extraction of lower consistency pulp
JPS59144692A (ja) 木材パルプの改良漂白法
US5919337A (en) Method of continuously isothermally cooking of pulp
FI73020B (fi) Foerfarande foer delignifiering/blekning av cellulosamassa.
JPS60231890A (ja) ソウダストからパルプを製造する装置及びソウダストの処理方法
JP3461311B2 (ja) 反転式トップセパレーターを備えた連続蒸解缶システムおよびその使用方法
CA1176408A (en) Process for the oxygen delignification of pulp
WO1994024362A1 (en) Method of continuously cooking pulp
BR112018005525B1 (pt) Método e sistema para deslignificação com oxigênio
JP3064616B2 (ja) 修正蒸解法を導入した縦型連続蒸解釜におけるパルプのカッパー価を制御する方法
JP2005256224A (ja) 塔状ベッセル型連続蒸解釜による蒸解方法

Legal Events

Date Code Title Description
BB Publication of examined application
FG Patent granted

Owner name: KAMYR AKTIEBOLAG

PC Transfer of assignment of patent

Owner name: METSO FIBER KARLSTAD AB

Free format text: METSO FIBER KARLSTAD AB