SE9804024L - Procedure for the treatment of black liquor - Google Patents

Procedure for the treatment of black liquor

Info

Publication number
SE9804024L
SE9804024L SE9804024A SE9804024A SE9804024L SE 9804024 L SE9804024 L SE 9804024L SE 9804024 A SE9804024 A SE 9804024A SE 9804024 A SE9804024 A SE 9804024A SE 9804024 L SE9804024 L SE 9804024L
Authority
SE
Sweden
Prior art keywords
black liquor
dry substance
substance content
liquor
oven
Prior art date
Application number
SE9804024A
Other languages
Swedish (sv)
Other versions
SE9804024D0 (en
SE522359C2 (en
Inventor
Henrik Eneberg
Jari Hiltunen
Heikki Jaakkola
Original Assignee
Ahlstrom Machinery Oy
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8550019&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SE9804024(L) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ahlstrom Machinery Oy filed Critical Ahlstrom Machinery Oy
Publication of SE9804024D0 publication Critical patent/SE9804024D0/en
Publication of SE9804024L publication Critical patent/SE9804024L/en
Publication of SE522359C2 publication Critical patent/SE522359C2/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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/10—Concentrating spent liquor by evaporation
    • 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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/12—Combustion of pulp liquors

Landscapes

  • Paper (AREA)
  • Soy Sauces And Products Related Thereto (AREA)

Abstract

Concentrated black liquor with a dry substance content greater than 75 wt.% is supplied via a pressurised storage vessel to a final concentration step where its dry substance content is increased to over 85 % before being supplied to the soda oven. A process for treating black liquor which is to be burnt in a soda oven (21), preferably to maintain liquor properties and improve functioning of the oven, comprises: (a) supplying black liquor concentrated to a dry substance content greater than 75 wt.% to a pressurised storage vessel (9); (b) transferring of black liquor from the pressurised storage vessel to the final concentration step (14), where its dry substance content is increased to over 85 wt.% by heating it under pressure at a temperature greater than the b.pt. of the liquor at atmospheric pressure; and (c) transferring of black liquor from the final concentration step to the soda oven.
SE9804024A 1997-11-26 1998-11-24 Treatment of black liquor for burning in soda oven SE522359C2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI974345A FI118431B (en) 1997-11-26 1997-11-26 Procedure for the treatment of black liquor

Publications (3)

Publication Number Publication Date
SE9804024D0 SE9804024D0 (en) 1998-11-24
SE9804024L true SE9804024L (en) 1999-05-27
SE522359C2 SE522359C2 (en) 2004-02-03

Family

ID=8550019

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9804024A SE522359C2 (en) 1997-11-26 1998-11-24 Treatment of black liquor for burning in soda oven

Country Status (2)

Country Link
FI (1) FI118431B (en)
SE (1) SE522359C2 (en)

Also Published As

Publication number Publication date
SE9804024D0 (en) 1998-11-24
FI974345A0 (en) 1997-11-26
FI118431B (en) 2007-11-15
FI974345A (en) 1999-05-27
SE522359C2 (en) 2004-02-03

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Legal Events

Date Code Title Description
NUG Patent has lapsed