FI54940C - Saett att framstaella cellulosamassa med hoeg ljushet - Google Patents

Saett att framstaella cellulosamassa med hoeg ljushet

Info

Publication number
FI54940C
FI54940C FI3374/73A FI337473A FI54940C FI 54940 C FI54940 C FI 54940C FI 3374/73 A FI3374/73 A FI 3374/73A FI 337473 A FI337473 A FI 337473A FI 54940 C FI54940 C FI 54940C
Authority
FI
Finland
Prior art keywords
ljushet
cellulosamassa
saett att
att framstaella
med hoeg
Prior art date
Application number
FI3374/73A
Other languages
English (en)
Finnish (fi)
Other versions
FI54940B (fi
Inventor
Hans Olof Samuelson
Leif Aoke Smedman
Erik Olof Sture Haegglund
Original Assignee
Mo Och Domsjoe 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 Mo Och Domsjoe Ab filed Critical Mo Och Domsjoe Ab
Publication of FI54940B publication Critical patent/FI54940B/fi
Application granted granted Critical
Publication of FI54940C publication Critical patent/FI54940C/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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/26—Multistage processes
    • D21C3/263—Multistage processes at least one stage being in presence of oxygen
FI3374/73A 1972-12-19 1973-10-31 Saett att framstaella cellulosamassa med hoeg ljushet FI54940C (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7216651A SE373395B (sv) 1972-12-19 1972-12-19 Forfarande for framstellning av cellulosamassa med hog ljushet genom uppslutning av ved med syrgas under tryck i nervaro av en kokvetska forsatt med basiska neutralisationsmedel

Publications (2)

Publication Number Publication Date
FI54940B FI54940B (fi) 1978-12-29
FI54940C true FI54940C (fi) 1979-04-10

Family

ID=20302569

Family Applications (1)

Application Number Title Priority Date Filing Date
FI3374/73A FI54940C (fi) 1972-12-19 1973-10-31 Saett att framstaella cellulosamassa med hoeg ljushet

Country Status (13)

Country Link
US (1) US3944463A (enExample)
JP (1) JPS5113761B2 (enExample)
AT (1) AT331117B (enExample)
BR (1) BR7309862D0 (enExample)
CA (1) CA1007406A (enExample)
CH (1) CH589173A5 (enExample)
FI (1) FI54940C (enExample)
FR (1) FR2210696B1 (enExample)
GB (1) GB1443765A (enExample)
IT (1) IT999801B (enExample)
NO (1) NO141568C (enExample)
SE (1) SE373395B (enExample)
ZA (1) ZA739305B (enExample)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52121502A (en) * 1976-04-07 1977-10-13 V Nauchinoopuroizubuodosutobue Process for producing halfffinished products from ground vegetable material
US4338158A (en) * 1976-04-09 1982-07-06 Weyerhaeuser Company Pulping in the presence of a protector
US4080248A (en) * 1976-06-28 1978-03-21 Crown Zellerbach Corporation Two-stage oxygen pulping
US4198266A (en) * 1977-10-12 1980-04-15 Airco, Inc. Oxygen delignification of wood pulp
NO144711C (no) * 1978-04-04 1981-10-21 Myrens Verksted As Fremgangsmaate til bleking av oksygendelignifiserte celluloseholdige masser med ozon
US4259150A (en) * 1978-12-18 1981-03-31 Kamyr Inc. Plural stage mixing and thickening oxygen bleaching process
JPS57175275A (en) * 1981-04-21 1982-10-28 Fujitsu Ltd Delayed time measuring circuit
CA1255058A (en) * 1985-05-28 1989-06-06 Gary B. Derdall Process for preparation of potassium salts from pulping of lignocellulosic materials
US5217575A (en) * 1988-10-18 1993-06-08 Kamyr Ab Process for oxygen bleaching using two vertical reactors
US5865898A (en) * 1992-08-06 1999-02-02 The Texas A&M University System Methods of biomass pretreatment
US5693296A (en) * 1992-08-06 1997-12-02 The Texas A&M University System Calcium hydroxide pretreatment of biomass
EP0891439A1 (en) * 1996-03-26 1999-01-20 Sunds Defibrator Industries Aktiebolag Oxygen delignification of pulp in two stages
SE510740C2 (sv) * 1996-11-26 1999-06-21 Sunds Defibrator Ind Ab Styrning av syrgasdelignifiering
US7297225B2 (en) * 2004-06-22 2007-11-20 Georgia-Pacific Consumer Products Lp Process for high temperature peroxide bleaching of pulp with cool discharge
US8470132B2 (en) * 2006-03-13 2013-06-25 Fpinnovations Near neutral chlorine dioxide bleaching of pulp
JP2007282597A (ja) * 2006-04-19 2007-11-01 Ihi Corp 木質バイオマスの可溶化方法
FI20070126A0 (fi) * 2006-09-08 2007-02-13 Linde Ag Menetelmä hartsin poistamiseksi massasta ja hiilidioksidin tai (bi)karbonaatin käyttö tähän tarkoitukseen
US8715969B2 (en) * 2008-11-20 2014-05-06 E I Du Pont De Nemours And Company Delignification of biomass with sequential base treatment
CA2745466C (en) 2008-12-08 2013-04-09 Fpinnovations Increasing alkaline pulping yield for softwood with metal ions
EP2694723A1 (en) 2011-04-01 2014-02-12 University of Limerick Lignocellulose processing
CN104254601A (zh) * 2012-02-13 2014-12-31 Bp北美公司 木质纤维素水解产物脱毒的方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA694720A (en) * 1964-09-22 G. Gillaspie Athey Method of bleaching cellulosic pulps
US2147618A (en) * 1936-04-01 1939-02-14 West Virginia Pulp & Paper Com Method of bleaching pulp
CA553349A (en) * 1950-10-04 1958-02-18 C. Harris George Pulping process
US2926114A (en) * 1957-08-12 1960-02-23 Kimberly Clark Co Manufacture of cellulosic products
CA632280A (en) * 1958-07-02 1961-12-05 Kimberly-Clark Corporation Manufacture of bleached cellulosic products resistant to brightness reversion
US3251730A (en) * 1960-07-14 1966-05-17 Watanabe Sadayoshi Process for the purification of a pulp by oxidation with oxygen
FI45574C (fi) * 1970-05-11 1972-07-10 Kymin Oy Kymmene Ab Menetelmä selluloosapitoisten aineiden valkaisemiseksi.
SE355614B (enExample) * 1970-05-13 1973-04-30 Mo Och Domsjoe Ab
SE343092B (enExample) * 1970-06-22 1972-02-28 Mo Och Domsjoe Ab

Also Published As

Publication number Publication date
FR2210696A1 (enExample) 1974-07-12
JPS5113761B2 (enExample) 1976-05-04
ZA739305B (en) 1975-07-30
IT999801B (it) 1976-03-10
FI54940B (fi) 1978-12-29
AT331117B (de) 1976-08-10
CA1007406A (en) 1977-03-29
FR2210696B1 (enExample) 1976-05-07
DE2362438B2 (de) 1975-11-27
CH589173A5 (enExample) 1977-06-30
DE2362438A1 (de) 1974-07-04
NO141568C (no) 1980-04-08
ATA1048473A (de) 1975-10-15
SE373395B (sv) 1975-02-03
GB1443765A (en) 1976-07-28
US3944463A (en) 1976-03-16
JPS4987801A (enExample) 1974-08-22
NO141568B (no) 1979-12-27
BR7309862D0 (pt) 1974-08-15

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