CA2390742C - Removal of water-soluble compounds from wood chips prior to cooking - Google Patents

Removal of water-soluble compounds from wood chips prior to cooking Download PDF

Info

Publication number
CA2390742C
CA2390742C CA002390742A CA2390742A CA2390742C CA 2390742 C CA2390742 C CA 2390742C CA 002390742 A CA002390742 A CA 002390742A CA 2390742 A CA2390742 A CA 2390742A CA 2390742 C CA2390742 C CA 2390742C
Authority
CA
Canada
Prior art keywords
wood chips
water
washing
wash
liquid
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.)
Expired - Fee Related
Application number
CA002390742A
Other languages
English (en)
French (fr)
Other versions
CA2390742A1 (en
Inventor
C. Bertil Stromberg
Kaj O. Henricson
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.)
Andritz Inc
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 CA2390742A1 publication Critical patent/CA2390742A1/en
Application granted granted Critical
Publication of CA2390742C publication Critical patent/CA2390742C/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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/02—Pretreatment of the finely-divided materials before digesting with water or steam

Landscapes

  • Paper (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
CA002390742A 2001-06-22 2002-06-17 Removal of water-soluble compounds from wood chips prior to cooking Expired - Fee Related CA2390742C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US29977001P 2001-06-22 2001-06-22
US60/299,770 2001-06-22
US10/159,292 US20030000661A1 (en) 2001-06-22 2002-06-03 Removal of water-soluble compounds from wood chips prior to cooking
US10/159,292 2002-06-03

Publications (2)

Publication Number Publication Date
CA2390742A1 CA2390742A1 (en) 2002-12-22
CA2390742C true CA2390742C (en) 2009-11-10

Family

ID=26855812

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002390742A Expired - Fee Related CA2390742C (en) 2001-06-22 2002-06-17 Removal of water-soluble compounds from wood chips prior to cooking

Country Status (5)

Country Link
US (1) US20030000661A1 ( )
JP (1) JP2003020582A ( )
CA (1) CA2390742C ( )
FI (1) FI20021152A ( )
SE (1) SE528163C2 ( )

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7309401B2 (en) 2003-05-12 2007-12-18 Andritz Inc. Top separator for gas phase and hydraulic phase continuous digesters and method for converting digester
EP1561536A1 (de) * 2004-02-03 2005-08-10 Siemens Aktiengesellschaft Reparatur-Lotverfahren zum Reparieren eines Bauteils, welches ein Basismaterial mit einer gerichteten Mikrostruktur umfasst
FI122651B (fi) * 2004-11-19 2012-05-15 Metso Paper Inc Menetelmä ja laitteisto hakkeen käsittelemiseksi
US20150376834A1 (en) * 2013-02-07 2015-12-31 University Of Maine System Board Of Trustees Extraction of lignocellulosics for production of fibers and a precipitate-free hemicellulose extract
WO2015095468A1 (en) * 2013-12-18 2015-06-25 Shell Oil Company Continuous or semi-continuous biomass wash system for hydrothermal hydrocatalytic conversion
SE542430C2 (en) * 2017-09-19 2020-04-28 Domsjoe Fabriker Ab Removal of inorganic elements from wood chips

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1505529A (en) * 1974-06-14 1978-03-30 Mo Och Domsjoe Ab Method for the oxygen-gas delignification of lignocellulosic material and apparatus for carrying out the method
SE416481B (sv) * 1977-05-02 1981-01-05 Mo Och Domsjoe Ab Fofarande och anordning for behandling av vedflis for avlegsnande av tungmetaller och harts
US4826567A (en) * 1985-08-05 1989-05-02 Interox (Societe Anonyme) Process for the delignification of cellulosic substances by pretreating with a complexing agent followed by hydrogen peroxide
FI81396C (fi) * 1988-10-25 1990-10-10 Enso Gutzeit Oy Foerfarande foer behandling av avfallsvatten fraon traefoeraedlingsindustrins massaframstaellningsprocesser.
US6143134A (en) * 1998-11-06 2000-11-07 Andritz-Ahlstrom Inc. Chip spreader for air-lock feeder

Also Published As

Publication number Publication date
JP2003020582A (ja) 2003-01-24
SE0201891D0 (sv) 2002-06-20
FI20021152A0 (fi) 2002-06-14
SE0201891L (sv) 2002-12-23
FI20021152A (fi) 2002-12-23
US20030000661A1 (en) 2003-01-02
SE528163C2 (sv) 2006-09-19
CA2390742A1 (en) 2002-12-22

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