SE8501032L - CONTINUOUS ACID-ALKALIE EXTRACTION PROCEDURE FOR BLACKING AND DELIGNIFICATION OF TREMASSES AND DEVICE THEREOF - Google Patents

CONTINUOUS ACID-ALKALIE EXTRACTION PROCEDURE FOR BLACKING AND DELIGNIFICATION OF TREMASSES AND DEVICE THEREOF

Info

Publication number
SE8501032L
SE8501032L SE8501032A SE8501032A SE8501032L SE 8501032 L SE8501032 L SE 8501032L SE 8501032 A SE8501032 A SE 8501032A SE 8501032 A SE8501032 A SE 8501032A SE 8501032 L SE8501032 L SE 8501032L
Authority
SE
Sweden
Prior art keywords
pulp
percent
tremasses
alkalie
delignification
Prior art date
Application number
SE8501032A
Other languages
Swedish (sv)
Other versions
SE8501032D0 (en
Inventor
L A Carlsmith
Original Assignee
Ingersoll Rand 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 Ingersoll Rand Co filed Critical Ingersoll Rand Co
Publication of SE8501032D0 publication Critical patent/SE8501032D0/en
Publication of SE8501032L publication Critical patent/SE8501032L/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
    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

9730-IR-PA OXYGEN ALKALI EXTRACTION OF CELLULOSIC PULP An aqueous solution of alkali and oxygen gas is added to chlorinated and washed pulp and the pulp is retained in a retention apparatus from one to five minutes to remove lignin from the pulp. The pulp is fed directly to a pressing and washing apparatus from the retention apparatus where the pulp is pressed to a consistency ranging from about 16 percent to 40 percent and then washed to a consistency ranging from about 9 percent to about 15 percent.
SE8501032A 1984-07-27 1985-03-04 CONTINUOUS ACID-ALKALIE EXTRACTION PROCEDURE FOR BLACKING AND DELIGNIFICATION OF TREMASSES AND DEVICE THEREOF SE8501032L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US63513584A 1984-07-27 1984-07-27

Publications (2)

Publication Number Publication Date
SE8501032D0 SE8501032D0 (en) 1985-03-04
SE8501032L true SE8501032L (en) 1986-01-28

Family

ID=24546587

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8501032A SE8501032L (en) 1984-07-27 1985-03-04 CONTINUOUS ACID-ALKALIE EXTRACTION PROCEDURE FOR BLACKING AND DELIGNIFICATION OF TREMASSES AND DEVICE THEREOF

Country Status (6)

Country Link
JP (1) JPS6141385A (en)
BR (1) BR8501918A (en)
CA (1) CA1249904A (en)
FI (1) FI852910L (en)
NO (1) NO851038L (en)
SE (1) SE8501032L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0300276L (en) * 2003-01-31 2003-12-09 Kvaerner Pulping Tech Method for bleaching cellulose pulp and bleaching line for this

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI48486C (en) * 1973-01-24 1977-07-29 Ahlstroem Oy Process for bleaching a pulp.
JPS5126302A (en) * 1974-08-22 1976-03-04 Hitachi Shipbuilding Eng Co Sansoganjugasunyoru seruroosubutsushitsuno shorihoho
JPS5789690A (en) * 1980-11-21 1982-06-04 Toyo Pulp Co Ltd Alkali oxygen delignification of fiber substance
JPS5940398A (en) * 1982-08-30 1984-03-06 Toshiba Corp Memory control system

Also Published As

Publication number Publication date
CA1249904A (en) 1989-02-14
SE8501032D0 (en) 1985-03-04
FI852910L (en) 1986-01-28
FI852910A0 (en) 1985-07-26
NO851038L (en) 1986-01-28
JPS6141385A (en) 1986-02-27
BR8501918A (en) 1986-05-06

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