BRPI0512491A - método para reduzir formação de incrustação em um digestor e digestor para converter aparas de madeira em polpa para fabricação de papel - Google Patents

método para reduzir formação de incrustação em um digestor e digestor para converter aparas de madeira em polpa para fabricação de papel

Info

Publication number
BRPI0512491A
BRPI0512491A BRPI0512491-3A BRPI0512491A BRPI0512491A BR PI0512491 A BRPI0512491 A BR PI0512491A BR PI0512491 A BRPI0512491 A BR PI0512491A BR PI0512491 A BRPI0512491 A BR PI0512491A
Authority
BR
Brazil
Prior art keywords
digester
cooking liquor
papermaking
pulp
wood chips
Prior art date
Application number
BRPI0512491-3A
Other languages
English (en)
Inventor
Jianer Jiang
Gerald Wayne Hill
Original Assignee
Int Paper Co
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 Int Paper Co filed Critical Int Paper Co
Publication of BRPI0512491A publication Critical patent/BRPI0512491A/pt

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
    • D21C3/226—Use of compounds avoiding scale formation
    • 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
    • D21C3/24—Continuous processes

Landscapes

  • Paper (AREA)

Abstract

MéTODO PARA REDUZIR FORMAçãO DE INCRUSTAçãO EM UM DIGESTOR E DIGESTOR PARA CONVERTER APARAS DE MADEIRA EM POLPA PARA FABRICAçãO DE PAPEL Um aspecto da presente invenção se relaciona a um método e a um digestor para reduzir a deposição de incrustação de cálcio em um digestor de aparas de madeira, incluindo: extrair a partir do digestor primeira e segunda quantidades de líquor de cozimento tendo respectivamente primeira e segunda concentrações de cálcio; tratar o líquor de cozimento extraído para produzir um líquor de cozimento tendo uma concentração de cálcio menor que a concentração de cálcio dos primeiro e segundo líquores de cozimento; e reintroduzir o líquor de cozimento tratado no digestor. Um outro aspecto da invenção se relaciona ao método e ao digestor, nos quais a produção é aumentada com adição contínua de líquores de processo, preferivelmente em uma região superior do digestor.
BRPI0512491-3A 2004-06-26 2005-06-24 método para reduzir formação de incrustação em um digestor e digestor para converter aparas de madeira em polpa para fabricação de papel BRPI0512491A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/877,529 US7241363B2 (en) 2004-06-26 2004-06-26 Methods to decrease scaling in digester systems
PCT/US2005/022451 WO2006012286A1 (en) 2004-06-26 2005-06-24 Methods to decrease scaling in digester systems

Publications (1)

Publication Number Publication Date
BRPI0512491A true BRPI0512491A (pt) 2008-03-04

Family

ID=34981784

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0512491-3A BRPI0512491A (pt) 2004-06-26 2005-06-24 método para reduzir formação de incrustação em um digestor e digestor para converter aparas de madeira em polpa para fabricação de papel

Country Status (8)

Country Link
US (2) US7241363B2 (pt)
EP (1) EP1786973A1 (pt)
CN (1) CN1981085A (pt)
BR (1) BRPI0512491A (pt)
CA (1) CA2570997A1 (pt)
NZ (1) NZ552795A (pt)
RU (2) RU2386737C2 (pt)
WO (1) WO2006012286A1 (pt)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2885371B1 (fr) * 2005-05-03 2007-08-03 Cie Ind De La Matiere Vegetale Installation pour la mise en oeuvre d'un procede de production de pate a papier, de lignines et de sucres et procede de production au moyen d'une telle installation
RU2508426C2 (ru) * 2009-03-17 2014-02-27 Деквест Аг Композиция для ингибирования образования отложений кальциевых солей
RU2493307C1 (ru) * 2012-04-19 2013-09-20 Открытое акционерное общество "Группа "Илим" Способ обработки растительных целлюлозосодержащих материалов
US8986504B1 (en) 2013-10-25 2015-03-24 International Paper Company Digester apparatus
US9353476B2 (en) * 2014-04-18 2016-05-31 Georgia-Pacific Containerboard Llc Method for recycling waste material with reduced odor emission
FI126082B (en) * 2014-07-15 2016-06-15 Kemira Oyj Procedure to prevent sludge formation
RU2651412C1 (ru) * 2017-06-26 2018-04-19 Федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский государственный университет промышленных технологий и дизайна" Способ упаривания щелоков в производстве целлюлозы
US11365454B2 (en) 2017-09-26 2022-06-21 Poet Research, Inc. Systems and methods for processing lignocellulosic biomass
CN114277590B (zh) * 2021-12-31 2023-05-26 郑州运达造纸设备有限公司 一种汽蒸仓防架桥槽体
CN114875419A (zh) * 2022-05-26 2022-08-09 华能陇东能源有限责任公司 一种无酸洗废液的除钙流化床化学清洗系统

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US4547264A (en) 1979-02-12 1985-10-15 Kamyr, Inc. Method of withdrawing liquid from a pair of vertically spaced annular screens
US4221632A (en) * 1979-04-03 1980-09-09 Weyerhaeuser Company Method and apparatus for determining the location of the chip level in a pulping digester
US4578149A (en) 1981-03-05 1986-03-25 Fagerlund Bertil K E Process for digesting cellulosic material with heat recovery
SE8502807D0 (sv) * 1985-06-06 1985-06-06 Ahlstroem Foeretagen Sett och apparatur for att deaktivera avlutar
US4799995A (en) * 1987-07-29 1989-01-24 The Dow Chemical Company Scale inhibition formulations for kraft digesters
CA1299322C (en) 1987-10-26 1992-04-28 Larry A. Wilhelmsen Apparatus and methods for reducing the formation of scale in pulping operations
SE468053B (sv) * 1988-12-20 1992-10-26 Kamyr Ab Saett vid kontinuerlig uppslutningskokning av cellulosahaltigt fibermaterial
US5192396A (en) * 1988-12-20 1993-03-09 Kamyr Ab Process for the continuous digestion of cellulosic fiber material
GB8829829D0 (en) * 1988-12-21 1989-02-15 Ciba Geigy Ag Chemical process
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SE502039C2 (sv) 1993-12-29 1995-07-24 Kvaerner Pulping Tech Sätt och anordning för kontinuerlig kokning av massa
US5650045A (en) * 1994-12-14 1997-07-22 Salminen; Reijo K. Apparatus and method for wood pulp digester
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US6103058A (en) 1997-08-07 2000-08-15 Kvaerner Pulping Ab Method for the continuous cooking of pulp
US6203662B1 (en) 1997-08-07 2001-03-20 Kvaerner Pulping Ab Method for the continuous cooking of pulp in a digester system having a top separator
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US6277240B1 (en) * 1998-10-02 2001-08-21 Andritz-Ahlstrom Inc. Method for continuously pulping cellulosic fibrous material
FI110327B (fi) * 1999-10-04 2002-12-31 Metso Chemical Pulping Oy Menetelmä sellumassan valmistamiseksi
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MY138251A (en) 2001-06-06 2009-05-29 Thermphos Trading Gmbh Method for inhibiting calcium salt scale
MY129053A (en) 2001-06-06 2007-03-30 Thermphos Trading Gmbh Composition for inhibiting calcium salt scale

Also Published As

Publication number Publication date
RU2007101762A (ru) 2008-07-27
CA2570997A1 (en) 2006-02-02
US20050284592A1 (en) 2005-12-29
US20070227681A1 (en) 2007-10-04
RU2009143977A (ru) 2011-06-10
WO2006012286A1 (en) 2006-02-02
EP1786973A1 (en) 2007-05-23
CN1981085A (zh) 2007-06-13
US7241363B2 (en) 2007-07-10
US7918967B2 (en) 2011-04-05
NZ552795A (en) 2010-07-30
RU2386737C2 (ru) 2010-04-20

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 7A ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2158 DE 15/05/2012.