SE466106B - Elektrokemiskt reduktionsfoerfarande foer oekning av lignocellulosamassas ljushetsgrad - Google Patents

Elektrokemiskt reduktionsfoerfarande foer oekning av lignocellulosamassas ljushetsgrad

Info

Publication number
SE466106B
SE466106B SE8505899A SE8505899A SE466106B SE 466106 B SE466106 B SE 466106B SE 8505899 A SE8505899 A SE 8505899A SE 8505899 A SE8505899 A SE 8505899A SE 466106 B SE466106 B SE 466106B
Authority
SE
Sweden
Prior art keywords
complex
pulp
chromium
ligand
edta
Prior art date
Application number
SE8505899A
Other languages
English (en)
Swedish (sv)
Other versions
SE8505899L (sv
SE8505899D0 (sv
Inventor
M N Hull
V M Yasnovsk
Original Assignee
Int Paper Co
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 Int Paper Co filed Critical Int Paper Co
Publication of SE8505899D0 publication Critical patent/SE8505899D0/xx
Publication of SE8505899L publication Critical patent/SE8505899L/
Publication of SE466106B publication Critical patent/SE466106B/sv

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
    • 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
    • D21C9/1021—Electrochemical processes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Paints Or Removers (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
SE8505899A 1984-12-21 1985-12-13 Elektrokemiskt reduktionsfoerfarande foer oekning av lignocellulosamassas ljushetsgrad SE466106B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/684,993 US4596630A (en) 1984-12-21 1984-12-21 Process for the electrochemical reductive bleaching of lignocellulosic pulp

Publications (3)

Publication Number Publication Date
SE8505899D0 SE8505899D0 (sv) 1985-12-13
SE8505899L SE8505899L (sv) 1986-06-22
SE466106B true SE466106B (sv) 1991-12-16

Family

ID=24750347

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8505899A SE466106B (sv) 1984-12-21 1985-12-13 Elektrokemiskt reduktionsfoerfarande foer oekning av lignocellulosamassas ljushetsgrad

Country Status (6)

Country Link
US (1) US4596630A (ja)
JP (1) JPS61152891A (ja)
CA (1) CA1259948A (ja)
FI (1) FI82724C (ja)
NO (1) NO166094C (ja)
SE (1) SE466106B (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19723889A1 (de) 1997-06-06 1998-12-10 Consortium Elektrochem Ind System zur elektrochemischen Delignifizierung ligninhaltiger Materialien sowie Verfahren zu seiner Anwendung
JP4613338B2 (ja) * 2001-02-06 2011-01-19 独立行政法人産業技術総合研究所 セルロース誘導体の漂白法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1717799A (en) * 1924-04-16 1929-06-18 Robert A Marr Pulp product
DE546104C (de) * 1928-07-11 1932-03-10 Schmidt Ernst Verfahren zur Herstellung von Sulfitzellstoff
US2119519A (en) * 1935-05-22 1938-06-07 Kuehne Chemical Company Process of bleaching cellulose
US2249646A (en) * 1940-06-28 1941-07-15 Diamond Alkali Co Bleaching cellulose with titanium compounds
US2549099A (en) * 1947-07-14 1951-04-17 Fabric Res Lab Inc Process for stripping color from dyed wool
US2975169A (en) * 1957-08-22 1961-03-14 Int Paper Canada Bleaching of cellulose pulp
US3156654A (en) * 1961-06-19 1964-11-10 Shell Oil Co Bleaching
US3453213A (en) * 1966-09-15 1969-07-01 Ventron Corp Chelates of titanous compounds stable at a ph greater than 5
SE393138B (sv) * 1974-03-14 1977-05-02 Mo Och Domsjoe Ab Forfarande for blekning av cellulosa med en syre innehallande gas i nervaro av natriumbikarbonat

Also Published As

Publication number Publication date
FI82724B (fi) 1990-12-31
CA1259948A (en) 1989-09-26
FI854927A (fi) 1986-06-22
US4596630A (en) 1986-06-24
NO166094C (no) 1991-05-29
SE8505899L (sv) 1986-06-22
JPS61152891A (ja) 1986-07-11
FI854927A0 (fi) 1985-12-12
JPH0585677B2 (ja) 1993-12-08
NO855198L (no) 1986-06-23
SE8505899D0 (sv) 1985-12-13
NO166094B (no) 1991-02-18
FI82724C (fi) 1991-04-10

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