NO952913L - Improved method and composition for delignification of a lignocellulosic material - Google Patents

Improved method and composition for delignification of a lignocellulosic material

Info

Publication number
NO952913L
NO952913L NO952913A NO952913A NO952913L NO 952913 L NO952913 L NO 952913L NO 952913 A NO952913 A NO 952913A NO 952913 A NO952913 A NO 952913A NO 952913 L NO952913 L NO 952913L
Authority
NO
Norway
Prior art keywords
lignocellulosic material
composition
delignification
improved method
moles per
Prior art date
Application number
NO952913A
Other languages
Norwegian (no)
Other versions
NO952913D0 (en
Inventor
Raymond C Francis
Daniel J Nicholson
Nicholas A Troughton
Original Assignee
Solvay Interox Ltd
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 Solvay Interox Ltd filed Critical Solvay Interox Ltd
Publication of NO952913L publication Critical patent/NO952913L/en
Publication of NO952913D0 publication Critical patent/NO952913D0/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
    • C01B15/055—Peroxyhydrates; Peroxyacids or salts thereof
    • C01B15/06—Peroxyhydrates; Peroxyacids or salts thereof containing sulfur
    • C01B15/08—Peroxysulfates
    • 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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
    • 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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/16—Bleaching ; Apparatus therefor with per 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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

Det blir beskrevet fremgangsmåte for delignoflserlng av et lignocellulosemateriale omfattende eksponering av materialet ved pH 6,0 til 9,5 til en blanding av monopersvovelsyre og et keton med formel (I), hvor R1 og R2 uavhengig er valgt fra gruppen omfattende alkyl og aryl, eller R1 og R danner sammen en karbocyklus. Det blir også beskrevet en kraftmasse-dellgnifiserlngs- blanding omfattende en kombinasjon av: a) vann, b) fra omkring 0,05 til omkring 0,3 mol pr. liter av et keton som ovenfor: c) fra omkring 0,0008 til omkring 0,50 mol pr. Ilter av monopersvovelsyre; og d) tilstrekkelig buffer til å opprettholde pH mellom omkring pH 6 og pH 9,5.A process is described for delignifying a lignocellulosic material comprising exposing the material at pH 6.0 to 9.5 to a mixture of monopersulfuric acid and a ketone of formula (I) wherein R 1 and R 2 are independently selected from the group consisting of alkyl and aryl. or R1 and R together form a carbocycle. There is also disclosed a power-mass-particle blending composition comprising a combination of: a) water, b) from about 0.05 to about 0.3 moles per minute. c) from about 0.0008 to about 0.50 moles per liter. Oxygen of monopersulfuric acid; and d) sufficient buffer to maintain pH between about pH 6 and pH 9.5.

NO952913A 1993-02-01 1995-07-21 Improved method and composition for delignification of a lignocellulosic material NO952913D0 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US1205793A 1993-02-01 1993-02-01
PCT/US1994/001085 WO1994018386A1 (en) 1993-02-01 1994-01-31 Improved process and composition for delignifying a lignocellulosic material

Publications (2)

Publication Number Publication Date
NO952913L true NO952913L (en) 1995-07-21
NO952913D0 NO952913D0 (en) 1995-07-21

Family

ID=21753173

Family Applications (1)

Application Number Title Priority Date Filing Date
NO952913A NO952913D0 (en) 1993-02-01 1995-07-21 Improved method and composition for delignification of a lignocellulosic material

Country Status (9)

Country Link
EP (1) EP0681625A4 (en)
JP (1) JPH08508791A (en)
AU (1) AU6130794A (en)
BR (1) BR9405754A (en)
CA (1) CA2154778A1 (en)
FI (1) FI953651A0 (en)
NO (1) NO952913D0 (en)
NZ (1) NZ262009A (en)
WO (1) WO1994018386A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5770011A (en) * 1995-11-17 1998-06-23 International Paper Company Neutral monoperoxysulfate bleaching process
EP1012376A2 (en) * 1997-06-20 2000-06-28 Blume, Hildegard Oxidation and bleaching system with enzymatically produced oxidizing agents
JP4967451B2 (en) * 2006-05-17 2012-07-04 三菱瓦斯化学株式会社 Method for producing bleached pulp
CN101903591A (en) 2007-12-20 2010-12-01 三菱瓦斯化学株式会社 Method for producing bleached pulp

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1368400A (en) * 1971-08-05 1974-09-25 Procter & Gamble Bleaching process and compositions therefor
US4404061A (en) * 1981-08-17 1983-09-13 International Paper Company Bleaching of lignocellulosic materials with monopersulfuric acid or its salts
EP0571433B1 (en) * 1991-02-12 1995-04-19 Pulp and Paper Research Institute of Canada Bleaching of lignocellulosic material with activated oxygen
IT1251180B (en) * 1991-08-28 1995-05-04 Ausimont Spa PROCESS FOR LIGNIN DEGRADATION WITH DIOSSIRANS

Also Published As

Publication number Publication date
NZ262009A (en) 1996-06-25
JPH08508791A (en) 1996-09-17
NO952913D0 (en) 1995-07-21
WO1994018386A1 (en) 1994-08-18
FI953651A7 (en) 1995-07-31
FI953651L (en) 1995-07-31
BR9405754A (en) 1995-11-28
AU6130794A (en) 1994-08-29
FI953651A0 (en) 1995-07-31
EP0681625A4 (en) 1997-03-12
CA2154778A1 (en) 1994-08-18
EP0681625A1 (en) 1995-11-15

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