MX166744B - Deslignificacion con oxigeno reforzado con peroxido de hidrogeno - Google Patents

Deslignificacion con oxigeno reforzado con peroxido de hidrogeno

Info

Publication number
MX166744B
MX166744B MX020786A MX2078690A MX166744B MX 166744 B MX166744 B MX 166744B MX 020786 A MX020786 A MX 020786A MX 2078690 A MX2078690 A MX 2078690A MX 166744 B MX166744 B MX 166744B
Authority
MX
Mexico
Prior art keywords
hydrogen peroxide
lignification
stage
oxygen reinforced
oxygen
Prior art date
Application number
MX020786A
Other languages
English (en)
Inventor
Ronald James Klein
V R Parthasarathy
Meenakshi Sundaram Hase Jameel
Joseh Stephan Gratzl
Original Assignee
Fmc Corp
Univ North Carolina
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 Fmc Corp, Univ North Carolina filed Critical Fmc Corp
Publication of MX166744B publication Critical patent/MX166744B/es

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
    • D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
    • D21C3/06—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites
    • D21C3/10—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites magnesium bisulfite
    • 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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
    • 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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Compounds Of Unknown Constitution (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Detergent Compositions (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

La presente invención se refiere a un procedimiento que emplea oxígeno molecular para deslignificar fibras de lignocelulosa en una pasta acuosa a partir de un digestor, sin una pérdida significativa de la resistencia de la fibra, el cual comprende las etapas de: a. espesar la pasta acuosa extrayendo de la misma una primera porción de licor, b. incorporar suficiente pasta acuosa espesada a partir de la etapa (a) en una primera mezcla de reacción, para proporcionar una consistencia de aproximadamente el 8 por ciento a aproximadamente el 25 por ciento en peso de fibras sobre una base secada al horno, conteniendo dicha mezcla de reacción también suficiente alcalinidad para ser equivalente a de aproximadamente el 1.5 por ciento a aproximadamente el 4 por ciento de hidróxido de sodio, y de aproximadamente el 0.01 por ciento a aproximadamente el 1 por ciento de peróxido de hidrógeno, basándose en el peso secado al horno de las fibras, c. mentener la primera mezcla de reacción a una temperatura de aproximadamente 80 grados C a aproximadamente 110 grados C, durante aproximadamente 30 a aproximadamente 60 minutos en la presencia de oxígeno molecular a una presión parcial de aproximadamente 620 a 860 kPa (75-110 psig), d. espesar la primera mezcla de reacción apartir de la etapa (c), extrayendo de la misma una segunda porción de licor, e. incorporar suficiente pasta acuosa espesada a partir de la etapa (d) en una segunda mezcla de reacción, para proporcionar una consistencia de aproximadamente el 8 por ciento a aproximadamente el 25 por ciento en peso de fibras sobre una base secada al horno, conteniendo dicha mezcla de reacción también suficiente alcalinidad para ser equivalente a de aproximadamente el 1.5 por ciento a aproximadamente el 4 por ciento de hidróxido de sodio, f. mantener la segunda mezcla de reacción a una temperatura de aproximadamente 70 grados C a aproximadamente 110 grados C durante aproximadamente 30 a aproximadamente 60 minutos en al presencia de oxígeno molecular a una presión parcial de aproximadamente 170 a 860 kPa (20-110 psig), y g. recuperar las fibras deslignificadas de la segunda mezcla de reacción, teniendo dichas fibras deslignificadas una resistencia igual o incrementada comparadas con las fibras deslignificadas mediante una sola etapa de oxígeno.
MX020786A 1989-05-19 1990-05-18 Deslignificacion con oxigeno reforzado con peroxido de hidrogeno MX166744B (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/354,522 US5011572A (en) 1989-05-19 1989-05-19 Two stage process for the oxygen delignification of lignocellulosic fibers with peroxide reinforcement in the first stage

Publications (1)

Publication Number Publication Date
MX166744B true MX166744B (es) 1993-02-01

Family

ID=23393705

Family Applications (1)

Application Number Title Priority Date Filing Date
MX020786A MX166744B (es) 1989-05-19 1990-05-18 Deslignificacion con oxigeno reforzado con peroxido de hidrogeno

Country Status (13)

Country Link
US (1) US5011572A (es)
EP (1) EP0401149B1 (es)
JP (1) JPH0314687A (es)
KR (1) KR930002072B1 (es)
AT (1) ATE104381T1 (es)
BR (1) BR9002337A (es)
CA (1) CA2014563C (es)
DE (1) DE69008042T2 (es)
DK (1) DK0401149T3 (es)
ES (1) ES2050992T3 (es)
FI (1) FI99152C (es)
MX (1) MX166744B (es)
NO (1) NO176810C (es)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5211809A (en) * 1991-05-21 1993-05-18 Air Products And Chemicals, Inc,. Dye removal in oxygen color stripping of secondary fibers
US5302244A (en) * 1992-02-18 1994-04-12 Domtar Inc. Oxygen delignification of waste cellulosic paper products
CA2082557C (en) * 1992-02-24 1997-03-11 Charles W. Hankins Integrated pulping process of waste paper yielding tissue-grade paper fibers
US6231718B1 (en) 1992-02-28 2001-05-15 International Paper Company Two phase ozone and oxygen pulp treatment
US5503709A (en) * 1994-07-27 1996-04-02 Burton; Steven W. Environmentally improved process for preparing recycled lignocellulosic materials for bleaching
BR9611836A (pt) * 1995-12-07 1999-03-09 Beloit Technologies Inc Deslignificação de oxigênio de pasta fluida de poupa de consistência média
BE1011129A4 (fr) * 1997-04-25 1999-05-04 Solvay Interox Procede continu de delignification et/ou de blanchiment de pate a papier chimique vierge ou recyclee.
US7747434B2 (en) * 2000-10-24 2010-06-29 Speech Conversion Technologies, Inc. Integrated speech recognition, closed captioning, and translation system and method
US11078624B2 (en) 2018-09-21 2021-08-03 King Abdulaziz University Method for isolating alpha cellulose from lignocellulosic materials
US11591751B2 (en) 2019-09-17 2023-02-28 Gpcp Ip Holdings Llc High efficiency fiber bleaching process
US20220213648A1 (en) 2021-01-06 2022-07-07 Gpcp Ip Holdings Llc Oxygen Treatment of High Kappa Fibers

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3719552A (en) * 1971-06-18 1973-03-06 American Cyanamid Co Bleaching of lignocellulosic materials with oxygen in the presence of a peroxide
CA973661A (en) * 1972-09-29 1975-09-02 Pulp And Paper Research Institute Of Canada Press alkaline extraction of cellulosic pulp
US4087318A (en) * 1974-03-14 1978-05-02 Mo Och Domsjo Aktiebolag Oxygen-alkali delignification of lignocellulosic material in the presence of a manganese compound
JPS5277202A (en) * 1977-01-08 1977-06-29 Jisuke Hayashi Process for refining pulp
FR2416297A1 (fr) * 1978-01-31 1979-08-31 Europeen Cellulose Procede anti-polluant de blanchiment de pate a papier
US4259150A (en) * 1978-12-18 1981-03-31 Kamyr Inc. Plural stage mixing and thickening oxygen bleaching process
FR2457339A1 (fr) * 1979-05-25 1980-12-19 Interox Procede pour la delignification et le blanchiment de pates cellulosiques chimiques et semi-chimiques
US4298427A (en) * 1979-06-15 1981-11-03 Weyerhaeuser Company Method and apparatus for intimately mixing oxygen and pulp while using an alkali to extract bleaching by-products
DE3207157C1 (de) * 1982-02-27 1983-06-09 Degussa Ag, 6000 Frankfurt Verfahren zur Herstellung von halbgebleichten Zellstoffen
FR2566015B1 (fr) * 1984-06-15 1986-08-29 Centre Tech Ind Papier Procede de blanchiment de pate mecanique par le peroxyde d'hydrogene
US4568420B1 (en) * 1984-12-03 1999-03-02 Int Paper Co Multi-stage bleaching process including an enhanced oxidative extraction stage
CA1249402A (en) * 1984-12-21 1989-01-31 Pulp And Paper Research Institute Of Canada Multistage brightening of high yield and ultra high- yield wood pulps
US4806203A (en) * 1985-02-14 1989-02-21 Elton Edward F Method for alkaline delignification of lignocellulosic fibrous material at a consistency which is raised during reaction
JPH0768675B2 (ja) * 1986-10-13 1995-07-26 新王子製紙株式会社 セルロ−スパルプの酸素による脱リグニン、漂白方法

Also Published As

Publication number Publication date
FI99152C (fi) 1997-10-10
DK0401149T3 (da) 1994-05-16
EP0401149B1 (en) 1994-04-13
BR9002337A (pt) 1991-08-06
NO902206D0 (no) 1990-05-18
NO176810C (no) 1995-05-31
KR930002072B1 (ko) 1993-03-26
US5011572A (en) 1991-04-30
NO176810B (no) 1995-02-20
CA2014563C (en) 1995-12-05
NO902206L (no) 1990-11-20
EP0401149A1 (en) 1990-12-05
FI902295A0 (fi) 1990-05-08
FI99152B (fi) 1997-06-30
ES2050992T3 (es) 1994-06-01
CA2014563A1 (en) 1990-11-19
JPH0314687A (ja) 1991-01-23
DE69008042D1 (de) 1994-05-19
ATE104381T1 (de) 1994-04-15
KR900018469A (ko) 1990-12-21
DE69008042T2 (de) 1994-07-28

Similar Documents

Publication Publication Date Title
DE3574486D1 (de) Verfahren zur delignifizierung und bleiche von zellstoffen.
ES2050992T3 (es) Deslignificacion con oxigeno reforzada con peroxido de hidrogeno.
NO893714L (no) Fremgangsmaate for bleking av masse.
LTIP753A (en) Process for bleaching of cellulose fibre excluding the use of chlorine
CA2137450A1 (en) Bleaching recycled pulp with ozone and hydrogen peroxide
BR9105959A (pt) Processo para o alvejamento de material ligno-celulosico
DE69528660D1 (de) Bleichen von papierzellstoff
ES2038954A6 (es) Metodo para blanquear pasta de papel.
SE9702583L (sv) Förfarande för massaframställning
ES2000019A4 (es) Procedimiento de blanqueo de pastas papeleras quimicas.
SE9300277D0 (sv) Klorfri massablekning
DE69007267T2 (de) Bleichen von Textilien mit Sauerstoff und Wasserstoffperoxid.
FI853492A0 (fi) Foerfarande foer delignifiering av sulfatcelluloser.
MY106117A (en) Delignification of lignocellulose-containing fiber.
SE9700884L (sv) Blekning med klordioxid i ett trefassteg
ATE120815T1 (de) Verfahren zur chlorarmen bleiche und delignifizierung von zellstoff.
FI905380A (fi) Foerfarande foer behandling av alkaliloesning.
SE9500573D0 (sv) Bleaching pulp with peroxide at superatmospheric pressure and in multiple stages