[go: up one dir, main page]

SE8800713D0 - Sett vid framstellning av cellulosamassa - Google Patents

Sett vid framstellning av cellulosamassa

Info

Publication number
SE8800713D0
SE8800713D0 SE8800713A SE8800713A SE8800713D0 SE 8800713 D0 SE8800713 D0 SE 8800713D0 SE 8800713 A SE8800713 A SE 8800713A SE 8800713 A SE8800713 A SE 8800713A SE 8800713 D0 SE8800713 D0 SE 8800713D0
Authority
SE
Sweden
Prior art keywords
treatment
sulphur dioxide
cellulosamassa
preparation
pulp
Prior art date
Application number
SE8800713A
Other languages
English (en)
Other versions
SE8800713L (sv
SE466964B (sv
Inventor
S Backlund
O Bodin
P-O Lindblad
K S E Norden
Original Assignee
Sca Development 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 Sca Development Ab filed Critical Sca Development Ab
Priority to SE8800713A priority Critical patent/SE466964B/sv
Publication of SE8800713D0 publication Critical patent/SE8800713D0/sv
Priority to PCT/SE1988/000702 priority patent/WO1989008165A1/en
Priority to AU29330/89A priority patent/AU2933089A/en
Publication of SE8800713L publication Critical patent/SE8800713L/sv
Publication of SE466964B publication Critical patent/SE466964B/sv

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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/04—Pretreatment of the finely-divided materials before digesting with acid reacting compounds

Landscapes

  • Paper (AREA)
SE8800713A 1988-03-01 1988-03-01 Foerbehandling av flis medelst svaveldioxid vid framstaellning av sulfatmassa SE466964B (sv)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE8800713A SE466964B (sv) 1988-03-01 1988-03-01 Foerbehandling av flis medelst svaveldioxid vid framstaellning av sulfatmassa
PCT/SE1988/000702 WO1989008165A1 (en) 1988-03-01 1988-12-27 Process for the pre-treatment of chips
AU29330/89A AU2933089A (en) 1988-03-01 1988-12-27 Process for the pre-treatment of chips

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8800713A SE466964B (sv) 1988-03-01 1988-03-01 Foerbehandling av flis medelst svaveldioxid vid framstaellning av sulfatmassa

Publications (3)

Publication Number Publication Date
SE8800713D0 true SE8800713D0 (sv) 1988-03-01
SE8800713L SE8800713L (sv) 1989-09-02
SE466964B SE466964B (sv) 1992-05-04

Family

ID=20371539

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8800713A SE466964B (sv) 1988-03-01 1988-03-01 Foerbehandling av flis medelst svaveldioxid vid framstaellning av sulfatmassa

Country Status (3)

Country Link
AU (1) AU2933089A (sv)
SE (1) SE466964B (sv)
WO (1) WO1989008165A1 (sv)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1130155A1 (en) * 2000-03-01 2001-09-05 Akzo Nobel N.V. Pulping process
EP1264037A2 (en) * 2000-02-09 2002-12-11 Akzo Nobel N.V. Pulping process
US6569285B2 (en) 2000-02-09 2003-05-27 Akzo Nobel N.V. Process for gas phase pretreating of lignocellulosic containing material
US11299850B2 (en) 2017-11-09 2022-04-12 Iogen Corporation Converting lignocellulosic biomass to glucose using a low temperature sulfur dioxide pretreatment
CA3078833A1 (en) 2017-11-09 2019-05-16 Iogen Corporation Low temperature pretreatment with sulfur dioxide
CA3094413A1 (en) 2018-04-06 2019-10-10 Iogen Corporation Pretreatment with lignosulfonic acid

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2190194A (en) * 1936-10-28 1940-02-13 Brown Co Chemical pulping of raw cellulosic material
US4211605A (en) * 1978-08-03 1980-07-08 Canadian International Paper Company High yield chemimechanical pulping processes

Also Published As

Publication number Publication date
WO1989008165A1 (en) 1989-09-08
AU2933089A (en) 1989-09-22
SE8800713L (sv) 1989-09-02
SE466964B (sv) 1992-05-04

Similar Documents

Publication Publication Date Title
SE7902901L (sv) Sett for blekning av oxygendelignifierad, cellulosahaltig massa med ozon
BR9007533A (pt) Processo para fabricacao de polpa alvejada e para deslignificar e alvejar um material lignoscelulosico
FR2457339B1 (sv)
FI935284A0 (sv) Cellulosamassor med bestämd morfologi, som förbättrar pappersstyrkan
FI922618A0 (fi) Anvaendning av zeoliter i bleknings- foerfarande.
BR9307521A (pt) Processo para a deslignificação e alvejamento de polpa contendo lignocelulose
ES2016084B3 (es) Procedimiento para el blanqueo y la delignificacion de productos con celulosa
SE8202665L (sv) Sett vid framstellning av sulfatmassa
SE8902566D0 (sv) Bleaching pulp with ozone-chlorine mixtures
SE8800713D0 (sv) Sett vid framstellning av cellulosamassa
NO920969D0 (no) Fremgangsmaate for bleking av plantematerialer i en toerr omgivelse
SE8003407L (sv) Forfarande vid syrgasblekning av cellulosamassa
SE8100650L (sv) Sett att bleka lignocellulosamassa
NO912641L (no) Kontinuerlig, totrinns blekeprosess for papirmasse.
FI923420A7 (sv) Förfarande för blekning av lignocellulosahaltigt material
MY130042A (en) Method for reducing thermal and light-induced brightness reversion in lignin-containing pulps.
SE8403372L (sv) Sett att delignifiera kemisk massa
FI96784B (sv) Förfarande för blekning av kemiska cellulosamassor för framställning av blekta absorberande massor
ES322925A1 (es) Procedimiento para blanquear reductivamente pulpas de madera de bajo contenido celulosico.
ES2012324T3 (es) Procedimiento para la fabricacion de pastas quimicotermomecanicas blanqueadas.
SE8405061D0 (sv) Sett att framstella cellulosamassa
MX9307413A (es) Proceso para blanquear pulpa que contiene lignocelulosa.
BR9407409A (pt) Processo para tratar polpa lignocelulósica antes da etapa de alvejamento e deslignificar a mesma na etapa de deslignificação por oxigênio
SE8704041D0 (sv) Sett vid blekning av cellulosamassa
SE8700313L (sv) Forfarande for blekning av mekaniska massor

Legal Events

Date Code Title Description
NAL Patent in force

Ref document number: 8800713-3

Format of ref document f/p: F

NUG Patent has lapsed

Ref document number: 8800713-3

Format of ref document f/p: F