CA2001188A1 - Blanchiment a charge multiple au chlore pour prevenir la naissance de dioxines et de furanes chlores - Google Patents

Blanchiment a charge multiple au chlore pour prevenir la naissance de dioxines et de furanes chlores

Info

Publication number
CA2001188A1
CA2001188A1 CA002001188A CA2001188A CA2001188A1 CA 2001188 A1 CA2001188 A1 CA 2001188A1 CA 002001188 A CA002001188 A CA 002001188A CA 2001188 A CA2001188 A CA 2001188A CA 2001188 A1 CA2001188 A1 CA 2001188A1
Authority
CA
Canada
Prior art keywords
chlorine
pulp
charges
bleaching
furans
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
CA002001188A
Other languages
English (en)
Inventor
Ronnie G. Hise
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Westvaco Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2001188A1 publication Critical patent/CA2001188A1/fr
Abandoned legal-status Critical Current

Links

Landscapes

  • Paper (AREA)
CA002001188A 1988-10-25 1989-10-23 Blanchiment a charge multiple au chlore pour prevenir la naissance de dioxines et de furanes chlores Abandoned CA2001188A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US26253488A 1988-10-25 1988-10-25
US262,534 1988-10-25
US37946589A 1989-07-13 1989-07-13
US379,465 1989-07-13
US40872389A 1989-09-18 1989-09-18
US408,723 1989-09-18

Publications (1)

Publication Number Publication Date
CA2001188A1 true CA2001188A1 (fr) 1990-04-25

Family

ID=27401523

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002001188A Abandoned CA2001188A1 (fr) 1988-10-25 1989-10-23 Blanchiment a charge multiple au chlore pour prevenir la naissance de dioxines et de furanes chlores

Country Status (4)

Country Link
JP (1) JPH02160986A (fr)
CA (1) CA2001188A1 (fr)
FI (1) FI895042A7 (fr)
PT (1) PT92081A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3077895B1 (fr) 2018-02-09 2020-02-28 Sas Woodoo Dispositif de detection tactile avec interface tactile en materiau composite
FR3044577B1 (fr) 2015-12-07 2017-12-22 Timothee Boitouzet Procede de delignification partielle et de remplissage d'un materiau ligno-cellulosique, et structure de materiau composite obtenue par ce procede
FR3067275B1 (fr) 2017-06-07 2022-08-12 Timothee Boitouzet Procede de delignification partielle par voie supercritique ou subcritique et de remplissage d'un materiau ligno-cellulosique
FR3086196B1 (fr) 2018-09-20 2022-12-16 Sas Woodoo Piece en materiau ligno-cellulosique et procede de fabrication d'une telle piece

Also Published As

Publication number Publication date
FI895042A0 (fi) 1989-10-24
PT92081A (pt) 1990-04-30
JPH02160986A (ja) 1990-06-20
FI895042A7 (fi) 1990-04-26

Similar Documents

Publication Publication Date Title
AU638017B2 (en) Environmentally improved process for bleaching lignocellulosic materials
US6881299B2 (en) Refiner bleaching with magnesium oxide and hydrogen peroxide
US4435249A (en) Process for the oxygen delignification of pulp mill rejects
NO330358B1 (no) Fremgangsmåte for å lysgjøre mekanisk masse
EP0407421B1 (fr) Procede de reduction de chlorure residuelle dans des pates feuillus
FI105213B (fi) Menetelmä valkaistun massan valmistamiseksi lignoselluloosamateriaalista
EP0056263B1 (fr) Procédé pour améliorer le lavage de pâtes cellulosiques préparées en partant d'une matière lignocellulosique
US4956048A (en) Method of alcohol washing brownstock pulp prior to a chlorination bleaching stage
EP0519061A1 (fr) Addition de substance alcaline en deux etapes pour une delignification a base d'oxygene d'une pate a consistance elevee.
Krasowski et al. The formation of oxalic acid during bleaching of kraft pulp
Lohrasebi et al. Chemistry and pulping feasibility of compression wood in black spruce
EP0627030A1 (fr) Lessivage modifie de pulpe de papier suivi d'un blanchiment a l'ozone
CA1147909A (fr) Methode de defibrage et de blanchiment de la pate de cellulose
WO1992012289A1 (fr) Procede de decoloration de pulpe lignocellulosique sans utilisation de chlore
AU3462995A (en) Method and apparatus for the continuous production of cellulosic pulp
CA1275759C (fr) Methode et dispositif de defibrage alcalin des matieres cellulosiques
EP0239583B2 (fr) Procede de pre-traitement d'une pulpe avec des stabilisateurs et du peroxyde avant le raffinage mecanique
RU2071518C1 (ru) Способ кислородной делигнификации небеленой целлюлозной массы
JPH02160986A (ja) パルプの処理方法
EP0720676A1 (fr) Procede ameliore de blanchiment de pate lignocellulosique
EP1115944A1 (fr) Procede de preparation d'une pate fibreuse a partir de plantes herbacees
EP0960235B1 (fr) Procede de delignification a l'oxygene de pate a papier
US260749A (en) Making and for textile and other purposes
US6315863B1 (en) Chlorine dioxide pulp bleaching process having reduced barium scaling by recycling post-chlorination waste filtrate
NO831429L (no) Behandling av masse med oksygen.

Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued