BRPI0803333A2 - method and system for semi-thermal pulping - Google Patents

method and system for semi-thermal pulping

Info

Publication number
BRPI0803333A2
BRPI0803333A2 BRPI0803333-1A BRPI0803333A BRPI0803333A2 BR PI0803333 A2 BRPI0803333 A2 BR PI0803333A2 BR PI0803333 A BRPI0803333 A BR PI0803333A BR PI0803333 A2 BRPI0803333 A2 BR PI0803333A2
Authority
BR
Brazil
Prior art keywords
semi
pulping
thermal
chemical pulping
extraction screen
Prior art date
Application number
BRPI0803333-1A
Other languages
Portuguese (pt)
Inventor
Bertil Stromberg
Original Assignee
Andritz Inc
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 Andritz Inc filed Critical Andritz Inc
Publication of BRPI0803333A2 publication Critical patent/BRPI0803333A2/en

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
    • 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
    • D21C7/00—Digesters

Landscapes

  • Paper (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)

Abstract

MéTODO E SISTEMA PARA POLPAçãO SEMI-QUìMICA. A presente invenção refere-se a um método e aparelho para minimizar aderência de lignina a uma peneira de extração em um processo de polpação semiquímica. O método e aparelho são relativos a, em geral, fornecer licor branco e NaOH para aumentar o pH de licor de cozimento na ou junto de uma peneira de extração.METHOD AND SYSTEM FOR SEMI-CHEMICAL PULPING. The present invention relates to a method and apparatus for minimizing lignin adherence to an extraction screen in a semi-chemical pulping process. The method and apparatus relates generally to providing white liquor and NaOH to raise the cooking liquor pH in or near an extraction screen.

BRPI0803333-1A 2007-08-07 2008-08-06 method and system for semi-thermal pulping BRPI0803333A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US95444607P 2007-08-07 2007-08-07
US12/173,132 US20090038767A1 (en) 2007-08-07 2008-07-15 Method and System for Semi-Chemical Pulping

Publications (1)

Publication Number Publication Date
BRPI0803333A2 true BRPI0803333A2 (en) 2009-04-07

Family

ID=40345370

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0803333-1A BRPI0803333A2 (en) 2007-08-07 2008-08-06 method and system for semi-thermal pulping

Country Status (10)

Country Link
US (1) US20090038767A1 (en)
JP (1) JP5060421B2 (en)
CN (1) CN101387087B (en)
AU (1) AU2008203206B2 (en)
BR (1) BRPI0803333A2 (en)
CL (1) CL2008002309A1 (en)
ES (1) ES2525700T3 (en)
PT (1) PT2034090E (en)
RU (1) RU2479682C2 (en)
ZA (1) ZA200806264B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100263813A1 (en) * 2009-04-21 2010-10-21 Andritz Inc. Green liquor pretreatment of lignocellulosic material
US8795468B2 (en) * 2010-07-09 2014-08-05 Valmet Ab Method and system for impregnating chips
CN102787521A (en) * 2011-05-16 2012-11-21 张世乐 Cooking liquid compensation technology used for intermittent cooking
CN102704296B (en) * 2012-07-09 2014-06-18 江苏联海生物科技有限公司 Process for pretreating straw raw materials
CN105019290B (en) * 2015-08-03 2017-01-11 海南金海浆纸业有限公司 Pulping and papermaking digesting kettle sieve plate treatment method
UY39227A (en) * 2020-05-22 2021-12-31 Suzano Sa METHOD FOR UNCLOGGING OR CLEANING A SCREEN IN A KRAFT PROCESS CONTINUOUS COOKING DIGESTOR
CN112025906B (en) * 2020-09-10 2021-11-16 大禾(上海)环保科技有限公司 Production process of straw co-production fulvic acid glue-free and aldehyde-free fiberboard

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1432245A (en) * 1972-05-01 1976-04-14 Westvaco Corp Method of pulping wood
US3811995A (en) * 1972-09-05 1974-05-21 Westvaco Corp Method of high yield semichemical pulp production
JPS53119302A (en) * 1977-03-19 1978-10-18 Toyo Pulp Co Ltd Production of alkali pulp
JPS569494A (en) * 1979-06-29 1981-01-30 Mitsubishi Heavy Ind Ltd Causticizing method and apparatus of green liquor
CA2037717C (en) * 1990-09-17 1996-03-05 Bertil Stromberg Extended kraft cooking with white liquor added to wash circulation
US6132556A (en) * 1993-05-04 2000-10-17 Andritz-Ahlstrom Inc. Method of controlling pulp digester pressure via liquor extraction
US5565061A (en) * 1994-06-14 1996-10-15 Salminen; Reijo Method and apparatus for removing scales deposited on the strainer of a pulp digester
US5536367A (en) * 1995-01-25 1996-07-16 Salminen; Reijo K. Pulp digester cleaning system
US6248208B1 (en) * 1995-06-02 2001-06-19 Andritz-Ahlstrom Inc. Pretreatment of chips before cooking
CN1201851A (en) * 1998-05-22 1998-12-16 陈源 Cotton pulp and other coarse pulp clean production
JP2000080580A (en) * 1998-09-04 2000-03-21 Daishowa Paper Mfg Co Ltd Scale removal in continuous digester
US6277240B1 (en) * 1998-10-02 2001-08-21 Andritz-Ahlstrom Inc. Method for continuously pulping cellulosic fibrous material
US20010032711A1 (en) * 1998-10-26 2001-10-25 C. Bertil Stromberg Pulp cooking with particular alkali profiles
MY129053A (en) * 2001-06-06 2007-03-30 Thermphos Trading Gmbh Composition for inhibiting calcium salt scale
FI120547B (en) * 2004-10-04 2009-11-30 Metso Paper Inc Alkaline cooking process and pulp making plant
FI126694B (en) * 2005-12-02 2017-04-13 Metsä Board Oyj Chemical-mechanical pulp and process for producing chemical-mechanical pulp

Also Published As

Publication number Publication date
CN101387087B (en) 2013-05-15
CN101387087A (en) 2009-03-18
JP5060421B2 (en) 2012-10-31
JP2009041175A (en) 2009-02-26
CL2008002309A1 (en) 2009-03-13
ES2525700T3 (en) 2014-12-29
RU2479682C2 (en) 2013-04-20
ZA200806264B (en) 2009-10-28
RU2008130768A (en) 2010-01-27
AU2008203206B2 (en) 2011-12-15
US20090038767A1 (en) 2009-02-12
PT2034090E (en) 2014-12-19
AU2008203206A1 (en) 2009-02-26

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Legal Events

Date Code Title Description
B03A Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]
B06T Formal requirements before examination [chapter 6.20 patent gazette]
B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]
B06I Publication of requirement cancelled [chapter 6.9 patent gazette]
B11E Dismissal acc. art. 34 of ipl - requirements for examination incomplete
B11T Dismissal of application maintained [chapter 11.20 patent gazette]