SE0502851L - Systems and process for the generation of steam in a boiler for the production of chemical cellulose pulp - Google Patents

Systems and process for the generation of steam in a boiler for the production of chemical cellulose pulp

Info

Publication number
SE0502851L
SE0502851L SE0502851A SE0502851A SE0502851L SE 0502851 L SE0502851 L SE 0502851L SE 0502851 A SE0502851 A SE 0502851A SE 0502851 A SE0502851 A SE 0502851A SE 0502851 L SE0502851 L SE 0502851L
Authority
SE
Sweden
Prior art keywords
steam
black liquor
generation
heating
treatment
Prior art date
Application number
SE0502851A
Other languages
Swedish (sv)
Other versions
SE528574C2 (en
Inventor
Vidar Snekkenes
Krister Olsson
Lennart Gustavsson
Katarina Vallhagen
Finn Oulie
Original Assignee
Kvaerner Pulping Tech
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 Kvaerner Pulping Tech filed Critical Kvaerner Pulping Tech
Priority to SE0502851A priority Critical patent/SE0502851L/en
Priority to PCT/SE2006/050583 priority patent/WO2007073333A1/en
Publication of SE528574C2 publication Critical patent/SE528574C2/en
Publication of SE0502851L publication Critical patent/SE0502851L/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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/02—Pretreatment of the finely-divided materials before digesting with water or steam
    • 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
    • D21C11/06—Treatment of pulp gases; Recovery of the heat content of the gases; Treatment of gases arising from various sources in pulp and paper mills; Regeneration of gaseous SO2, e.g. arising from liquors containing sulfur compounds
    • 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
    • D21C11/06—Treatment of pulp gases; Recovery of the heat content of the gases; Treatment of gases arising from various sources in pulp and paper mills; Regeneration of gaseous SO2, e.g. arising from liquors containing sulfur compounds
    • D21C11/08—Deodorisation ; Elimination of malodorous compounds, e.g. sulfur compounds such as hydrogen sulfide or mercaptans, from gas streams
    • 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
    • D21C11/0042—Fractionating or concentration of spent liquors by special methods

Landscapes

  • Paper (AREA)

Abstract

The invention concerns a system and a method for the generation of steam in a digester plant for the production of chemical cellulose pulp. The pressure of hot, pressurised black liquor from a digester (4) is reduced in a first step (11 a/11 b) for the formation of sufficient quantities of black liquor steam (BL-ST) that is used for the steam pre-treatment of the chips in a second pre-heating step (2). Pure steam (P-ST) for the steam pre-treatment of the chips in a first pre¬ heating step (1 ) is formed in sufficient quantities through re-heating (13) the black liquor whose pressure has been reduced before a final subsequent pressure reduction, where the increased quantity of black liquor steam is led to a steam converter (14) for the generation of pure steam. This system entails an efficient use of the heat content of the black liquor with simple process equipment, with less problems from clogging, and it generates sufficient quantities of pure and more contaminated steam that is used in a first steam pre-treatment step and a second steam pre-treatment step, respectively. At the same time, an increased dry solids content of the black liquor is achieved through re-heating and repeated reduction in pressure, which reduces the load on the recovery plant.
SE0502851A 2005-12-21 2005-12-21 Systems and process for the generation of steam in a boiler for the production of chemical cellulose pulp SE0502851L (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE0502851A SE0502851L (en) 2005-12-21 2005-12-21 Systems and process for the generation of steam in a boiler for the production of chemical cellulose pulp
PCT/SE2006/050583 WO2007073333A1 (en) 2005-12-21 2006-12-15 System and method for the generation of steam from hot black liquor in a digester plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0502851A SE0502851L (en) 2005-12-21 2005-12-21 Systems and process for the generation of steam in a boiler for the production of chemical cellulose pulp

Publications (2)

Publication Number Publication Date
SE528574C2 SE528574C2 (en) 2006-12-19
SE0502851L true SE0502851L (en) 2006-12-19

Family

ID=37545610

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0502851A SE0502851L (en) 2005-12-21 2005-12-21 Systems and process for the generation of steam in a boiler for the production of chemical cellulose pulp

Country Status (2)

Country Link
SE (1) SE0502851L (en)
WO (1) WO2007073333A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI122983B (en) * 2009-02-09 2012-09-28 Andritz Inc A process for steam generation at a pulp mill digester
US9328963B2 (en) 2013-07-10 2016-05-03 Renmatix, Inc. Energy recovery when processing materials with reactive fluids
SE539449C2 (en) * 2015-11-16 2017-09-26 Valmet Oy Method for heating cellulosic material to full cooking temperature in digesters
SE1650664A1 (en) 2016-05-17 2017-10-17 Valmet Oy Method for generation of clean steam in a continuous digester system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5547546A (en) * 1994-10-04 1996-08-20 Ahlstrom Machinery Inc. Chip bin with steaming control and a gas vent containing a vacuum and pressure relief device
BR9816065A (en) * 1998-11-09 2001-08-21 Kvaerner Pulping Tech Process vapor production method from black liquor
US6176971B1 (en) * 1998-11-18 2001-01-23 Andritz-Ahlstrom Inc. Heat economy enhancements for the recovery and use of energy obtained from spent cooking liquors

Also Published As

Publication number Publication date
SE528574C2 (en) 2006-12-19
WO2007073333A1 (en) 2007-06-28

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Legal Events

Date Code Title Description
NUG Patent has lapsed