[go: up one dir, main page]

WO2013068453A3 - Kraft pulping process - Google Patents

Kraft pulping process Download PDF

Info

Publication number
WO2013068453A3
WO2013068453A3 PCT/EP2012/072120 EP2012072120W WO2013068453A3 WO 2013068453 A3 WO2013068453 A3 WO 2013068453A3 EP 2012072120 W EP2012072120 W EP 2012072120W WO 2013068453 A3 WO2013068453 A3 WO 2013068453A3
Authority
WO
WIPO (PCT)
Prior art keywords
producing
relates
present
pulping process
kraft pulping
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.)
Ceased
Application number
PCT/EP2012/072120
Other languages
French (fr)
Other versions
WO2013068453A2 (en
Inventor
Henric Brage
Espen Ribe
Johannes Bogren
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.)
SODRA CELL AB
Original Assignee
SODRA CELL 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
Application filed by SODRA CELL AB filed Critical SODRA CELL AB
Publication of WO2013068453A2 publication Critical patent/WO2013068453A2/en
Publication of WO2013068453A3 publication Critical patent/WO2013068453A3/en
Anticipated expiration legal-status Critical
Ceased 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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/12—Combustion of pulp liquors
    • 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
    • D21C11/0064—Aspects concerning the production and the treatment of green and white liquors, e.g. causticizing green liquor
    • D21C11/0071—Treatment of green or white liquors with gases, e.g. with carbon dioxide for carbonation; Expulsion of gaseous compounds, e.g. hydrogen sulfide, from these liquors by this treatment (stripping); Optional separation of solid compounds formed in the liquors by this treatment
    • 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

Landscapes

  • Paper (AREA)

Abstract

The present invention relates to a process for producing substantially pure hydrogen sulphide (H2S). The present invention also relates to a process for producing a new pre-treatment mixture, which is to be used in a pre-treatment step before cooking in processes for producing kraft pulp. The present invention also relates to a process for producing kraft pulp, said process comprising the above mentioned processes.
PCT/EP2012/072120 2011-11-08 2012-11-08 Kraft pulping process Ceased WO2013068453A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP11188279.1A EP2592186A1 (en) 2011-11-08 2011-11-08 Kraft pulping process
EP11188279.1 2011-11-08

Publications (2)

Publication Number Publication Date
WO2013068453A2 WO2013068453A2 (en) 2013-05-16
WO2013068453A3 true WO2013068453A3 (en) 2013-07-18

Family

ID=47143119

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/072120 Ceased WO2013068453A2 (en) 2011-11-08 2012-11-08 Kraft pulping process

Country Status (2)

Country Link
EP (1) EP2592186A1 (en)
WO (1) WO2013068453A2 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1633736A (en) * 1925-07-07 1927-06-28 Jr Frederick Knapp Fish Process of preparing paper pulp
US3520773A (en) * 1968-05-17 1970-07-14 Mac Millan Bloedel Ltd Alkaline pulping processes with chemical pretreatment
US3560329A (en) * 1968-12-27 1971-02-02 Combustion Eng Process for low sulfide chemical recovery
CA923255A (en) * 1969-04-25 1973-03-27 Sivola Yrjo Method of making various sulphate cooking liquors
WO1997002383A1 (en) * 1995-07-04 1997-01-23 Kvaerner Pulping Ab Process for producing polysulphide by means of oxidizing sulphide in spent liquors from kraft cellulose cooking
EP0810321A1 (en) * 1996-05-30 1997-12-03 Sunds Defibrator Pori Oy Batch process for preparing improved kraft pulp
WO2000065150A1 (en) * 1999-04-23 2000-11-02 The Babcock & Wilcox Company Gasification process for spent liquor at high temperature and high pressure
WO2004092478A1 (en) * 2003-04-17 2004-10-28 Kvaerner Pulping Ab Impregnation of chips with an acid liquid prior to a sulphate pulping process

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI45576C (en) 1971-06-30 1972-07-10 Tampella Oy Ab Method for separating concentrated hydrogen sulfide from a sulphide-containing solution a
US3841962A (en) 1972-07-31 1974-10-15 Mac Millan Bloedel Ltd Hydrogen sulfide pretreatment of lignocellulosic materials in alkaline pulping processes

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1633736A (en) * 1925-07-07 1927-06-28 Jr Frederick Knapp Fish Process of preparing paper pulp
US3520773A (en) * 1968-05-17 1970-07-14 Mac Millan Bloedel Ltd Alkaline pulping processes with chemical pretreatment
US3560329A (en) * 1968-12-27 1971-02-02 Combustion Eng Process for low sulfide chemical recovery
CA923255A (en) * 1969-04-25 1973-03-27 Sivola Yrjo Method of making various sulphate cooking liquors
WO1997002383A1 (en) * 1995-07-04 1997-01-23 Kvaerner Pulping Ab Process for producing polysulphide by means of oxidizing sulphide in spent liquors from kraft cellulose cooking
EP0810321A1 (en) * 1996-05-30 1997-12-03 Sunds Defibrator Pori Oy Batch process for preparing improved kraft pulp
WO2000065150A1 (en) * 1999-04-23 2000-11-02 The Babcock & Wilcox Company Gasification process for spent liquor at high temperature and high pressure
WO2004092478A1 (en) * 2003-04-17 2004-10-28 Kvaerner Pulping Ab Impregnation of chips with an acid liquid prior to a sulphate pulping process

Also Published As

Publication number Publication date
EP2592186A1 (en) 2013-05-15
WO2013068453A2 (en) 2013-05-16

Similar Documents

Publication Publication Date Title
IN2014DN06637A (en)
JOP20210065A1 (en) Process for preparing substituted 5-fluoro-1H-pyrazolopyridines
WO2012098296A3 (en) Method for improving strength and retention, and paper product
WO2012080702A3 (en) Treatment
MY157010A (en) Process for the production of nano-fibrillar cellulose suspensions
MX346310B (en) Process for manufacturing a composition comprising cellulose pulp fibers and thermoplastic fibers.
MY156012A (en) Process for converting polysaccharides in an inorganic molten salt hydrate
MY159547A (en) Bio-oil production method
MX2011013569A (en) Process for preparing surface-reacted calcium carbonate and its use.
PL2447210T3 (en) Process for the production of hydrogen by steam reforming of a petroleum fraction with steam production
MX2011008262A (en) Substituted spiro-amides as b1r modulators.
EP2591166A4 (en) Process for production of precipitated lignin from black liquor and precipitated lignin produced by the process
WO2010015657A3 (en) Alkoxypyrazoles and the process for their preparation
WO2010138354A3 (en) New method and arrangement for feeding chemicals into a pulp process stream
ZA201502939B (en) Processes for producing cellulose pulp, sugars, and co-products from lignocellulosic biomass
WO2012134086A3 (en) Three-dimensional nanofiber scaffold for tissue repair and preparation method thereof
EP2236665A4 (en) Detergent for kraft pulp and process for producing kraft pulp with the same
WO2012082401A3 (en) Process for producing a renewable hydrocarbon fuel
MY161637A (en) Production process for refined fat or oil
PL2260063T3 (en) Process for the preparation of branched polybutadiene with a high content of 1,4-cis units
MX362689B (en) Method for producing 3,5-bis(fluoroalkyl)-pyrazol-4-carboxylic acid derivatives and 3,5-bis(fluoroalkyl)-pyrazoles.
UA102865C2 (en) Lactose and cellulose-based tableting aid
BR112012012346A2 (en) method for removal of chloride from a zinc sulfate solution
UA105479C2 (en) Process for preparing 2-sulfinyl-1h-benzimidazoles
MX352667B (en) Enhanced natural sweetener and method of making.

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12781337

Country of ref document: EP

Kind code of ref document: A2

122 Ep: pct application non-entry in european phase

Ref document number: 12781337

Country of ref document: EP

Kind code of ref document: A2