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CL2008002309A1 - Method for inhibiting fouling of a black liquor extraction sieve in a cooking vessel for semi-chemical pulping, comprising adding white liquor and a base to the cooking vessel at or near the extraction sieve, to locally raise the pH in that area. - Google Patents

Method for inhibiting fouling of a black liquor extraction sieve in a cooking vessel for semi-chemical pulping, comprising adding white liquor and a base to the cooking vessel at or near the extraction sieve, to locally raise the pH in that area.

Info

Publication number
CL2008002309A1
CL2008002309A1 CL2008002309A CL2008002309A CL2008002309A1 CL 2008002309 A1 CL2008002309 A1 CL 2008002309A1 CL 2008002309 A CL2008002309 A CL 2008002309A CL 2008002309 A CL2008002309 A CL 2008002309A CL 2008002309 A1 CL2008002309 A1 CL 2008002309A1
Authority
CL
Chile
Prior art keywords
cooking vessel
extraction sieve
sieve
black liquor
lignin
Prior art date
Application number
CL2008002309A
Other languages
Spanish (es)
Inventor
Bertil Stromberg C
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 CL2008002309A1 publication Critical patent/CL2008002309A1/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

UN MÉTODO PARA INHIBIR EL ENSUCIAMIENTO DE UN TAMIZ DE EXTRACCIÓN DE LICOR NEGRO EN UN RECIPIENTE DE<br /> COCCIÓN PARA OBTENCIÓN SEMIQUIMICA DE PULPA QUE COMPRENDE LOS PASOS DE:<br /> ALIMENTAR MATERIAL LIGNOCELULÓSICO Y LICOR VERDE AL RECIPIENTE DE COCCIÓN PARA OBTENCIÓN SEMIQUIMICA DE<br /> PULPA; COCER EL MATERIAL LIGNOCELULÓSICO EN EL RECIPIENTE DE COCCIÓN PARA OBTENCIÓN SEMIQUÍMICA DE<br /> PULPA DE MANERA QUE PARTE DE LA LIGNINA O TODA ELLA SE SEPARE DEL MATERIAL LIGNOCELULÓSICO, Y EN DONDE<br /> LA LIGNINA SE DISUELVE EN UN LICOR DE COCCIÓN; EXTRAER A TRAVÉS DE UN TAMIZ DE EXTRACCIÓN LICOR NEGRO QUE<br /> CONTIENE LIGNINA DISUELTA, EN DONDE EL LICOR NEGRO SE FORMA DURANTE EL PROCESO DE OBTENCIÓN<br /> SEMIQUIMICA DE PULPA DESDE EL RECIPIENTE DE COCCIÓN; Y AGREGAR LICOR BLANCO Y UNA BASE AL RECIPIENTE<br /> DE COCCIÓN EN EL TAMIZ DE EXTRACCIÓN O CERCA DE ÉSTE, DE MANERA QUE EL PH EN EL TAMIZ DE EXTRACCIÓN O<br /> CERCA DE ÉSTE SE ELEVE E INHIBA LA ADHERENCIA DE LIGNINA AL TAMIZ DE EXTRACCIÓN.<br />  A METHOD TO INHIBIT THE SOILING OF A BLACK LIQUOR EXTRACTION SIEVE IN A COOKING CONTAINER FOR THE SEMICHEMICAL OBTAINING OF PULP THAT INCLUDES THE STEPS OF: FEEDING LIGNOCELLULOSIC MATERIAL AND GREEN LIQUEUR RECEPTACLE SEMICHEMICAL OF <br /> PULP; COOK THE LIGNOCELLULOSIC MATERIAL IN THE COOKING CONTAINER FOR SEMICHEMICAL OBTAINING OF <br /> PULP IN A WAY THAT PART OF THE LIGNIN OR ALL OF IT IS SEPARATED FROM THE LIGNOCELLULOSIC MATERIAL, AND WHERE THE LIGNIN IS DISSOLVED IN A LIGNIN <br /> ; EXTRACTING THROUGH A BLACK LIQUOR EXTRACTION Sieve THAT CONTAINS DISSOLVED LIGNIN, WHERE THE BLACK LIQUOR IS FORMED DURING THE PROCESS OF OBTAINING <br /> PULP SEMI-CHEMISTRY FROM THE COOKING VESSEL; AND ADD WHITE LIQUOR AND A BASE TO THE COOKING CONTAINER <br /> IN OR NEAR THE EXTRACTION SIEVE, SO THAT THE PH IN THE EXTRACTION SIEVE OR <br /> NEAR IT IS RAISED AND INHIBITS THE ADHERENCE OF LIGNIN TO THE EXTRACTION SIEVE. <br />

CL2008002309A 2007-08-07 2008-08-06 Method for inhibiting fouling of a black liquor extraction sieve in a cooking vessel for semi-chemical pulping, comprising adding white liquor and a base to the cooking vessel at or near the extraction sieve, to locally raise the pH in that area. CL2008002309A1 (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
CL2008002309A1 true CL2008002309A1 (en) 2009-03-13

Family

ID=40345370

Family Applications (1)

Application Number Title Priority Date Filing Date
CL2008002309A CL2008002309A1 (en) 2007-08-07 2008-08-06 Method for inhibiting fouling of a black liquor extraction sieve in a cooking vessel for semi-chemical pulping, comprising adding white liquor and a base to the cooking vessel at or near the extraction sieve, to locally raise the pH in that area.

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 (8)

* 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
EP2591165B1 (en) * 2010-07-09 2020-05-06 Valmet Aktiebolag 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
US12297649B2 (en) 2022-10-27 2025-05-13 Primesource Building Products, Inc. Deck clip

Family Cites Families (16)

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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
PT2034090E (en) 2014-12-19
JP5060421B2 (en) 2012-10-31
RU2008130768A (en) 2010-01-27
US20090038767A1 (en) 2009-02-12
JP2009041175A (en) 2009-02-26
CN101387087A (en) 2009-03-18
AU2008203206A1 (en) 2009-02-26
CN101387087B (en) 2013-05-15
AU2008203206B2 (en) 2011-12-15
ES2525700T3 (en) 2014-12-29
ZA200806264B (en) 2009-10-28
BRPI0803333A2 (en) 2009-04-07
RU2479682C2 (en) 2013-04-20

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