PT87062A - Processo aperfeicoado para a preparacao de polpa para a fabricacao de papel - Google Patents

Processo aperfeicoado para a preparacao de polpa para a fabricacao de papel

Info

Publication number
PT87062A
PT87062A PT87062A PT8706288A PT87062A PT 87062 A PT87062 A PT 87062A PT 87062 A PT87062 A PT 87062A PT 8706288 A PT8706288 A PT 8706288A PT 87062 A PT87062 A PT 87062A
Authority
PT
Portugal
Prior art keywords
polpa
paper
manufacture
preparation
appropriate process
Prior art date
Application number
PT87062A
Other languages
English (en)
Other versions
PT87062B (pt
Inventor
Bohuslav V Kokta
Original Assignee
Stake Technology Ltd
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 Stake Technology Ltd filed Critical Stake Technology Ltd
Publication of PT87062A publication Critical patent/PT87062A/pt
Publication of PT87062B publication Critical patent/PT87062B/pt

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/02—Pretreatment of the raw materials by chemical or physical means
    • D21B1/021—Pretreatment of the raw materials by chemical or physical means by chemical means
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/14—Disintegrating in mills
    • D21B1/16—Disintegrating in mills in the presence of chemical agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30—Defibrating by other means
    • D21B1/36—Explosive disintegration by sudden pressure reduction
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
PT87062A 1987-03-24 1988-03-23 Processo aperfeicoado para a preparacao de polpa para a fabricacao de papel PT87062B (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000532871A CA1230208A (en) 1987-03-24 1987-03-24 Process for preparing pulp for paper making

Publications (2)

Publication Number Publication Date
PT87062A true PT87062A (pt) 1989-03-30
PT87062B PT87062B (pt) 1995-03-01

Family

ID=4135272

Family Applications (1)

Application Number Title Priority Date Filing Date
PT87062A PT87062B (pt) 1987-03-24 1988-03-23 Processo aperfeicoado para a preparacao de polpa para a fabricacao de papel

Country Status (9)

Country Link
US (1) US4798651A (pt)
EP (1) EP0284585A3 (pt)
BR (1) BR8801294A (pt)
CA (1) CA1230208A (pt)
ES (1) ES2005527A4 (pt)
FI (1) FI881261A (pt)
NZ (1) NZ223929A (pt)
PT (1) PT87062B (pt)
RU (1) RU1834938C (pt)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5087324A (en) * 1990-10-31 1992-02-11 James River Corporation Of Virginia Paper towels having bulky inner layer
EP0487793B1 (en) * 1990-11-26 1995-08-30 Bohuslav Vaclav Kokta Explosion process for preparing pulp for paper making
US5122228A (en) * 1990-12-10 1992-06-16 Stake Technology Limited Method of treatment of waste paper with steam
CA2037275A1 (en) * 1991-02-28 1992-08-29 Bohuslav V. Kokta Steam explosion pulping process for papermaking
CA2082557C (en) * 1992-02-24 1997-03-11 Charles W. Hankins Integrated pulping process of waste paper yielding tissue-grade paper fibers
CA2069984C (fr) * 1992-05-29 1999-03-09 Roland Gilbert Methode d'extraction de preservatifs chimiques du bois par detente a la pression atmospherique
US5853534A (en) * 1992-12-30 1998-12-29 Sunds Defibrator Industries Ab Method of producing pulp with high yield using a two-stage refining system operating at different temperatures
FR2743579B1 (fr) * 1996-01-17 1998-03-06 E Mc2 Dev Procede de fabrication de pate a papier a partir de plantes lignocellulosiques et pate a papier obtenue
WO2000019004A1 (en) * 1998-09-25 2000-04-06 Stake Technology Ltd. Semi alkaline steam explosion treatment of fibrous material for the production of cellulose pulp
US6372085B1 (en) 1998-12-18 2002-04-16 Kimberly-Clark Worldwide, Inc. Recovery of fibers from a fiber processing waste sludge
KR20010100017A (ko) 1998-12-30 2001-11-09 로날드 디. 맥크레이 화학물질을 첨가하는 증기 폭발 처리
US6413362B1 (en) 1999-11-24 2002-07-02 Kimberly-Clark Worldwide, Inc. Method of steam treating low yield papermaking fibers to produce a permanent curl
AU2003209591A1 (en) * 2002-02-22 2003-09-09 Gilles Gervais Process of treating lignocellulosic material to produce bio-ethanol
US7384502B2 (en) * 2002-12-24 2008-06-10 Nippon Paper Industries Co., Ltd. Process for impregnating, refining, and bleaching wood chips having low bleachability to prepare mechanical pulps having high brightness
US20040240897A1 (en) * 2003-05-30 2004-12-02 Samsung Electronics Co. Ltd Liquid toner screening device
US7364642B2 (en) * 2003-08-18 2008-04-29 Kimberly-Clark Worldwide, Inc. Recycling of latex-containing broke
US7297225B2 (en) * 2004-06-22 2007-11-20 Georgia-Pacific Consumer Products Lp Process for high temperature peroxide bleaching of pulp with cool discharge
FI126694B (fi) * 2005-12-02 2017-04-13 Metsä Board Oyj Kemimekaaninen massa ja menetelmä sen valmistamiseksi
US7771565B2 (en) 2006-02-21 2010-08-10 Packaging Corporation Of America Method of pre-treating woodchips prior to mechanical pulping
ITCZ20060006A1 (it) * 2006-03-06 2007-09-07 Univ Calabria Processo chimico-fisico per la produzione di fibre vegetali
CA2650913C (en) * 2009-01-23 2013-10-15 Sunopta Bioprocess Inc. Method and apparatus for conveying a cellulosic feedstock
CA2638160C (en) * 2008-07-24 2015-02-17 Sunopta Bioprocess Inc. Method and apparatus for conveying a cellulosic feedstock
CA2638152C (en) * 2008-07-24 2013-07-16 Sunopta Bioprocess Inc. Method and apparatus for treating a cellulosic feedstock
CA2638157C (en) * 2008-07-24 2013-05-28 Sunopta Bioprocess Inc. Method and apparatus for conveying a cellulosic feedstock
CA2638150C (en) * 2008-07-24 2012-03-27 Sunopta Bioprocess Inc. Method and apparatus for conveying a cellulosic feedstock
CA2650919C (en) * 2009-01-23 2014-04-22 Sunopta Bioprocess Inc. Method and apparatus for conveying a cellulosic feedstock
US8915644B2 (en) 2008-07-24 2014-12-23 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for conveying a cellulosic feedstock
CA2638159C (en) * 2008-07-24 2012-09-11 Sunopta Bioprocess Inc. Method and apparatus for treating a cellulosic feedstock
US9127325B2 (en) 2008-07-24 2015-09-08 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for treating a cellulosic feedstock
CA2673134A1 (en) * 2009-07-17 2011-01-17 Murray J. Burke Method and apparatus for the heat treatment of a cellulosic feedstock upstream of hydrolysis
PL2467532T3 (pl) 2009-08-24 2014-11-28 Abengoa Bioenergy New Tech Llc Sposób wytwarzania etanolu i współproduktów z biomasy celulozowej
KR20110123184A (ko) 2010-05-06 2011-11-14 바히아 스페셜티 셀룰로스 에스에이 높은 알파 용해 펄프 제조를 위한 방법 및 시스템
EP4389964A1 (en) * 2022-12-21 2024-06-26 Billerud Aktiebolag (publ) Method for producing ht-ctmp having high tensile strength
WO2024133442A1 (en) * 2022-12-21 2024-06-27 Billerud Aktiebolag (Publ) Maple ht-ctmp
EP4389966A1 (en) * 2022-12-21 2024-06-26 Billerud Aktiebolag (publ) Production of ctmp from a hardwood/softwood mixture

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA556962A (en) * 1958-05-06 R. Sheldon Fred Maintenance of brightness in bleached wood pulp
CA919468A (en) * 1970-06-08 1973-01-23 Kimberly-Clark Corporation Lignocellulosic pulping process and products
US4119025A (en) * 1977-01-24 1978-10-10 Stake Technology Ltd. Method and apparatus for conveying particulate material
DE2714993C3 (de) * 1977-01-24 1979-08-16 Stake Technology Ltd., Ottawa Verfahren zum Einbringen eines Fasermaterials in einen Druckbehälter
CA1096374A (en) * 1977-07-11 1981-02-24 Edward A. Delong Method of rendering lignin separable from cellulose and hemicellulose in lignocellulosic material and the product so produced
CA1096559A (en) * 1978-05-04 1981-03-03 Jonas A. I. Lindahl Process for pretreating particulate lignocellulosic material
CA1138708A (en) * 1980-03-27 1983-01-04 Douglas B. Brown Press for expressing liquid from a mass
CA1119033A (en) * 1980-04-24 1982-03-02 Douglas B. Brown Apparatus and method for discharge of pressure cooked particulate or fibrous material
CA1212505A (en) * 1984-07-17 1986-10-14 Rudy Vit Method, process and apparatus for converting wood, wood residue and or biomass into pulp
SE455314B (sv) * 1985-09-03 1988-07-04 Punya B Chaudhuri Framstellning av cellulosamassa innefattande kemisk forbehandling och defibrering genom expansion

Also Published As

Publication number Publication date
FI881261A0 (fi) 1988-03-16
NZ223929A (en) 1990-03-27
BR8801294A (pt) 1988-10-25
PT87062B (pt) 1995-03-01
RU1834938C (ru) 1993-08-15
US4798651A (en) 1989-01-17
FI881261A (fi) 1988-09-25
EP0284585A3 (en) 1991-04-17
CA1230208A (en) 1987-12-15
EP0284585A2 (en) 1988-09-28
ES2005527A4 (es) 1989-03-16

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Legal Events

Date Code Title Description
FG3A Patent granted, date of granting

Effective date: 19940812

MM3A Annulment or lapse

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 19960229