FI950692A - Method for removing harmful impurities during alkaline delignification of cellulosic material - Google Patents

Method for removing harmful impurities during alkaline delignification of cellulosic material Download PDF

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Publication number
FI950692A
FI950692A FI950692A FI950692A FI950692A FI 950692 A FI950692 A FI 950692A FI 950692 A FI950692 A FI 950692A FI 950692 A FI950692 A FI 950692A FI 950692 A FI950692 A FI 950692A
Authority
FI
Finland
Prior art keywords
cellulosic material
removing harmful
impurities during
harmful impurities
during alkaline
Prior art date
Application number
FI950692A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI98225C (en
FI950692A0 (en
FI98225B (en
Inventor
Jouni Jaentti
Juhani Vehmaan-Kreula
Original Assignee
Ahlstroem 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 Ahlstroem Oy filed Critical Ahlstroem Oy
Priority to FI950692A priority Critical patent/FI98225C/en
Publication of FI950692A0 publication Critical patent/FI950692A0/en
Priority to PCT/FI1995/000556 priority patent/WO1996025554A1/en
Priority to CN95197648A priority patent/CN1088130C/en
Priority to AU36552/95A priority patent/AU3655295A/en
Priority to ZA958530A priority patent/ZA958530B/en
Publication of FI950692A publication Critical patent/FI950692A/en
Application granted granted Critical
Publication of FI98225B publication Critical patent/FI98225B/en
Publication of FI98225C publication Critical patent/FI98225C/en

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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/04—Regeneration of pulp liquors or effluent waste waters of alkali lye
    • 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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/12—Combustion of pulp liquors
    • D21C11/122—Treatment, e.g. dissolution, of the smelt
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
FI950692A 1995-02-16 1995-02-16 Procedure for Removing Harmful Impurities in Alkaline Delignification of Cellulosic Material FI98225C (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FI950692A FI98225C (en) 1995-02-16 1995-02-16 Procedure for Removing Harmful Impurities in Alkaline Delignification of Cellulosic Material
PCT/FI1995/000556 WO1996025554A1 (en) 1995-02-16 1995-10-09 Method to reduce silicon, phosphor and aluminium contents in green liquor
CN95197648A CN1088130C (en) 1995-02-16 1995-10-09 Method to reduce silicon, phosphor and aluminium contents in green liquor
AU36552/95A AU3655295A (en) 1995-02-16 1995-10-09 Method to reduce silicon, phosphor and aluminium contents in green liquor
ZA958530A ZA958530B (en) 1995-02-16 1995-10-10 Method of removing harmful impurities from green liquor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI950692 1995-02-16
FI950692A FI98225C (en) 1995-02-16 1995-02-16 Procedure for Removing Harmful Impurities in Alkaline Delignification of Cellulosic Material

Publications (4)

Publication Number Publication Date
FI950692A0 FI950692A0 (en) 1995-02-16
FI950692A true FI950692A (en) 1996-08-17
FI98225B FI98225B (en) 1997-01-31
FI98225C FI98225C (en) 1997-05-12

Family

ID=8542868

Family Applications (1)

Application Number Title Priority Date Filing Date
FI950692A FI98225C (en) 1995-02-16 1995-02-16 Procedure for Removing Harmful Impurities in Alkaline Delignification of Cellulosic Material

Country Status (5)

Country Link
CN (1) CN1088130C (en)
AU (1) AU3655295A (en)
FI (1) FI98225C (en)
WO (1) WO1996025554A1 (en)
ZA (1) ZA958530B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102041703B (en) * 2010-12-02 2012-05-23 陕西科技大学 Process for removing silicon in green liquor of papermaking alkali recovery section by seeding
CN102619123A (en) * 2012-03-16 2012-08-01 陕西科技大学 Method for removing silicon from green liquor through synergism of calcium oxide, carbon dioxide and aluminum-containing compound
CN103469664B (en) * 2013-08-26 2015-09-16 陕西科技大学 A kind of alkali collection workshop section green liquor flocculation silicon removing method
CN105839173A (en) * 2016-03-21 2016-08-10 中国制浆造纸研究院 Preparation method of white mud calcium carbonate whisker
CN115652676B (en) * 2022-11-17 2023-09-26 陕西科技大学 Green liquid silicon removal process for pre-stage silicon removal process

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3945880A (en) * 1974-08-05 1976-03-23 Erco Envirotech Ltd. Sodium chloride removal in pulp mill systems
SE7809167L (en) * 1978-08-30 1980-03-01 Rosenblads Patenter Ab BALLAST REDUCTION

Also Published As

Publication number Publication date
WO1996025554A1 (en) 1996-08-22
CN1175294A (en) 1998-03-04
ZA958530B (en) 1996-05-10
CN1088130C (en) 2002-07-24
FI98225C (en) 1997-05-12
AU3655295A (en) 1996-09-04
FI950692A0 (en) 1995-02-16
FI98225B (en) 1997-01-31

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Legal Events

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BB Publication of examined application
GB Transfer or assigment of application

Owner name: AHLSTROM MACHINERY OY

MA Patent expired