CA2066181A1 - Displacement heating in continuous digesters - Google Patents

Displacement heating in continuous digesters

Info

Publication number
CA2066181A1
CA2066181A1 CA2066181A CA2066181A CA2066181A1 CA 2066181 A1 CA2066181 A1 CA 2066181A1 CA 2066181 A CA2066181 A CA 2066181A CA 2066181 A CA2066181 A CA 2066181A CA 2066181 A1 CA2066181 A1 CA 2066181A1
Authority
CA
Canada
Prior art keywords
chamber
chips
black liquor
pulp
high temperature
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA2066181A
Other languages
French (fr)
Other versions
CA2066181C (en
Inventor
Karl-Eric Bertil Fagerlund
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beloit Technologies Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2066181A1 publication Critical patent/CA2066181A1/en
Application granted granted Critical
Publication of CA2066181C publication Critical patent/CA2066181C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • D21C7/00—Digesters
    • D21C7/14—Means for circulating the lye
    • 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)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

An apparatus and method for treating cellulosic wood chips in a digestion process for the liberation of pulp in a caustic hydroxide solution at high pressures and temperatures by delivering preconditioned wood chips to a first chamber (10) and circu-lating a low temperature black liquor through the chamber (10) to preheat the chips, while continuosly feeding the chips through the chamber (10) to a second chamber (21) at high temperature and pressure, circulating high temperature black liquor to the chips in the second chamber (21) to advance them to cooking temperature, feeding white liquor and the chips to a digester (33) for the digestion process over a predetermined period of time, and removing digested pulp and delivering the pulp to a washer with the black liquor for washing being utilized for the first chamber (10), and heating the white liquor through a heat exchange pro-cess with the high temperature black liquor.
CA002066181A 1989-09-28 1990-09-25 Displacement heating in continuous digesters Expired - Fee Related CA2066181C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US41392089A 1989-09-28 1989-09-28
US413,920 1989-09-28

Publications (2)

Publication Number Publication Date
CA2066181A1 true CA2066181A1 (en) 1991-03-29
CA2066181C CA2066181C (en) 1995-09-26

Family

ID=23639200

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002066181A Expired - Fee Related CA2066181C (en) 1989-09-28 1990-09-25 Displacement heating in continuous digesters

Country Status (10)

Country Link
EP (1) EP0502852B1 (en)
JP (1) JPH0674557B2 (en)
KR (1) KR0171423B1 (en)
CN (1) CN1021980C (en)
CA (1) CA2066181C (en)
DE (1) DE69004438T2 (en)
ES (1) ES2045948T3 (en)
FI (1) FI921373A7 (en)
NO (1) NO179016C (en)
WO (1) WO1991005103A2 (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0477059B1 (en) * 1990-09-20 1995-07-12 Kvaerner Pulping Technologies AB Impregnation with black liquor prior to white liquor introduction
US5302247A (en) * 1992-11-02 1994-04-12 Kamyr, Inc. Top circulation line cooling for a modified cook digester
CN1071997C (en) * 1993-06-18 2001-10-03 叶隆清 Plant growth accelerator and method for preparing same
SE502039C2 (en) * 1993-12-29 1995-07-24 Kvaerner Pulping Tech Methods and apparatus for continuous cooking of pulp
US5824187A (en) * 1993-12-29 1998-10-20 Kvaerner Pulping Ab Method for the continuous cooking of pulp
US6248208B1 (en) 1995-06-02 2001-06-19 Andritz-Ahlstrom Inc. Pretreatment of chips before cooking
AT403301B (en) * 1996-04-04 1998-01-26 Impco Voest Alpine Pulp Tech CONTINUOUS LIQUID MANAGEMENT
US6159336A (en) * 1997-08-07 2000-12-12 Kvaerner Pulping Ab Method and device for the continuous cooking of pulp
SE518738C2 (en) * 2001-12-17 2002-11-12 Kvaerner Pulping Tech Wood chip impregnation method for chemical pulping, comprises impregnating chips with liquid in different temperature zones of vessel
SE518957C2 (en) * 2002-01-24 2002-12-10 Kvaerner Pulping Tech Process for increasing the heating economy of the boiler system during continuous boiling
SE527058C2 (en) * 2004-02-09 2005-12-13 Kvaerner Pulping Tech Continuous cooking process with improved heat economy
WO2012005677A1 (en) * 2010-07-07 2012-01-12 Stora Enso Oyj Process for production of precipitated lignin from black liquor and precipitated lignin produced by the process
CN101906730B (en) * 2010-07-15 2013-01-23 轻工业杭州机电设计研究院 Non-wood fiber continuous cooking method and device
CN102154398A (en) * 2010-12-28 2011-08-17 国润金华（北京）国际能源投资有限公司佛山高明分公司 High-temperature and high-pressure cellulose-to-sugar process
CN103597139B (en) * 2011-03-25 2016-03-30 S·L·凯斯瓦尼 Method and system for extracting black liquor from a horizontal tube continuous digester
CN102154874B (en) * 2011-04-29 2012-11-21 白福安 Replacement cooking pulping method
CN102797189A (en) * 2012-08-11 2012-11-28 李肥生 Two-section self-heating helical-structure boiling separator
US9644317B2 (en) * 2014-11-26 2017-05-09 International Paper Company Continuous digester and feeding system
FR3039567A1 (en) * 2015-07-31 2017-02-03 Commissariat Energie Atomique DEVICE AND PROCESS FOR TREATING BLACK LIQUOR FROM THE PREPARATION OF PAPER PULP BY HYDROTHERMAL LIQUEFACTION
CN108611896A (en) * 2016-12-20 2018-10-02 丁永新 Using paper grade (stock) slurry made of wood, bamboo raw material
KR102295018B1 (en) 2019-09-11 2021-08-30 한병엽 Automatic ordering device for packaging container
KR102490233B1 (en) 2020-11-24 2023-01-18 한병엽 Pos apparatus, method for processing order information of pos apparatus, recording medium

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI63610C (en) * 1981-12-31 1983-07-11 Ekono Oy REQUIREMENTS FOR CONTAINER UPPSLUTNING AV FINFOERDELAT MATERIAL
SE452482B (en) * 1982-04-28 1987-11-30 Sunds Defibrator PROCEDURE FOR BATCH PREPARATION OF SULPHATE Pulp WITH HIGH DEGREE
JPS6059189A (en) * 1983-08-24 1985-04-05 ベロイト　コ−ポレ−ション Multi-stage digestion of wood pulp
FI71176C (en) * 1983-11-30 1991-12-03 Ekono Oy Process for preparing cellulose with batch boiling
WO2016006432A1 (en) 2014-07-10 2016-01-14 国立大学法人大阪大学 Leg phase transition timing determination method, leg phase transition timing determination device, walking assistance control method, and walking assistance device

Also Published As

Publication number Publication date
NO179016C (en) 1996-07-17
JPH0674557B2 (en) 1994-09-21
KR0171423B1 (en) 1999-05-01
NO920630L (en) 1992-02-18
ES2045948T3 (en) 1994-01-16
FI921373A0 (en) 1992-03-27
NO179016B (en) 1996-04-09
EP0502852B1 (en) 1993-11-03
DE69004438D1 (en) 1993-12-09
NO920630D0 (en) 1992-02-18
WO1991005103A3 (en) 1991-05-16
JPH05503739A (en) 1993-06-17
DE69004438T2 (en) 1994-05-11
KR920703920A (en) 1992-12-18
EP0502852A1 (en) 1992-09-16
CN1021980C (en) 1993-09-01
CA2066181C (en) 1995-09-26
CN1050579A (en) 1991-04-10
WO1991005103A2 (en) 1991-04-18
FI921373A7 (en) 1992-03-27

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Legal Events

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EEER Examination request
MKLA Lapsed