CA2164328C - Combustion des liqueurs noires et traitement des boues de chaux dans une chaudiere de recuperation - Google Patents

Combustion des liqueurs noires et traitement des boues de chaux dans une chaudiere de recuperation Download PDF

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Publication number
CA2164328C
CA2164328C CA002164328A CA2164328A CA2164328C CA 2164328 C CA2164328 C CA 2164328C CA 002164328 A CA002164328 A CA 002164328A CA 2164328 A CA2164328 A CA 2164328A CA 2164328 C CA2164328 C CA 2164328C
Authority
CA
Canada
Prior art keywords
lime sludge
recovery boiler
black liquor
combustion
furnace cavity
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
CA002164328A
Other languages
English (en)
Other versions
CA2164328A1 (fr
Inventor
Bertil Pettersson
Ingemar Eriksson
Bertil Granqvist
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.)
Korsnas AB
Original Assignee
Korsnas AB
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=20390168&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2164328(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Korsnas AB filed Critical Korsnas AB
Publication of CA2164328A1 publication Critical patent/CA2164328A1/fr
Application granted granted Critical
Publication of CA2164328C publication Critical patent/CA2164328C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • D21C11/04—Regeneration of pulp liquors or effluent waste waters of alkali 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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/0085—Introduction of auxiliary substances into the regenerating system in order to improve the performance of certain steps of the latter, the presence of these substances being confined to the regeneration cycle
    • D21C11/0092—Substances modifying the evaporation, combustion, or thermal decomposition processes of black liquor
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/04—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste liquors, e.g. sulfite liquors

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Paper (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Gasification And Melting Of Waste (AREA)

Abstract

L'invention concerne un procédé de modification du processus de combustion lorsque la liqueur noire évaporée est brûlée dans la cavité du four d'une chaudière de récupération. Le procédé consiste à envoyer les boues de caustification dans la cavité du four, le processus de combustion étant modifié de sorte que la température dans cette dernière augmente. L'invention porte également sur l'utilisation d'une chaudière de récupération pour la combustion simultanée de la liqueur noire et le traitement des boues de caustification. Dans un mode de réalisation, le traitement des boues résiduaires s'effectue de manière à augmenter la formation de sulfure de calcium dans le salin constitué de produits chimiques inorganiques formé dans la chaudière de récupération, et/ou à obtenir la calcination des boues résiduaires.
CA002164328A 1993-06-04 1994-06-03 Combustion des liqueurs noires et traitement des boues de chaux dans une chaudiere de recuperation Expired - Fee Related CA2164328C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9301920-6 1993-06-04
SE9301920A SE505270C2 (sv) 1993-06-04 1993-06-04 Svartlutsförbränning med mesatillsats
PCT/SE1994/000536 WO1994029518A1 (fr) 1993-06-04 1994-06-03 Combustion de la liqueur noire et traitement des boues de caustification dans une chaudiere de recuperation

Publications (2)

Publication Number Publication Date
CA2164328A1 CA2164328A1 (fr) 1994-12-22
CA2164328C true CA2164328C (fr) 2005-04-12

Family

ID=20390168

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002164328A Expired - Fee Related CA2164328C (fr) 1993-06-04 1994-06-03 Combustion des liqueurs noires et traitement des boues de chaux dans une chaudiere de recuperation

Country Status (4)

Country Link
CA (1) CA2164328C (fr)
FI (1) FI117564B (fr)
SE (1) SE505270C2 (fr)
WO (1) WO1994029518A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE500660C2 (sv) * 1992-12-03 1994-08-01 Mo Och Domsjoe Ab Förfarande för framställning av grönlut vid kemikalieåtervinning i sulfat- och sulfitmassafabriker
GB0325578D0 (en) * 2003-11-03 2003-12-03 Bioregional Minimills Uk Ltd Method for treating black liquor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3366535A (en) * 1966-07-11 1968-01-30 William T Neiman Process for regenerating waste liquor for reuse in kraft pulping operation
FR2550245B3 (fr) * 1983-08-04 1986-02-28 Nivelleau Bruniere Patrick M F Procede de combustion des liqueurs noires residuaires de fabrication de pate cellulosique

Also Published As

Publication number Publication date
FI955806A0 (fi) 1995-12-01
FI955806A (fi) 1995-12-01
FI117564B (fi) 2006-11-30
CA2164328A1 (fr) 1994-12-22
SE505270C2 (sv) 1997-07-28
WO1994029518A1 (fr) 1994-12-22
SE9301920L (sv) 1994-12-05
SE9301920D0 (sv) 1993-06-04

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20130604