GB1536886A - Method for the production of pulp - Google Patents

Method for the production of pulp

Info

Publication number
GB1536886A
GB1536886A GB33822/76A GB3382276A GB1536886A GB 1536886 A GB1536886 A GB 1536886A GB 33822/76 A GB33822/76 A GB 33822/76A GB 3382276 A GB3382276 A GB 3382276A GB 1536886 A GB1536886 A GB 1536886A
Authority
GB
United Kingdom
Prior art keywords
straw
pulp
oxygen
production
keskulaboratorio
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.)
Expired
Application number
GB33822/76A
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.)
KESKUSLABOR CENTRALLABOR Oy AB
Original Assignee
KESKUSLABOR CENTRALLABOR Oy 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 KESKUSLABOR CENTRALLABOR Oy AB filed Critical KESKUSLABOR CENTRALLABOR Oy AB
Publication of GB1536886A publication Critical patent/GB1536886A/en
Expired 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
    • D21C11/0007—Recovery of by-products, i.e. compounds other than those necessary for pulping, for multiple uses or not otherwise provided for
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23K—FODDER
    • A23K10/00—Animal feeding-stuffs
    • A23K10/30—Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms
    • A23K10/32—Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms from hydrolysates of wood or straw
    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
    • D21C3/026—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of O2, e.g. air
    • 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
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Polymers & Plastics (AREA)
  • Mycology (AREA)
  • Molecular Biology (AREA)
  • Health & Medical Sciences (AREA)
  • Physiology (AREA)
  • Animal Husbandry (AREA)
  • Zoology (AREA)
  • Botany (AREA)
  • Biotechnology (AREA)
  • Food Science & Technology (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)

Abstract

1536886 Manufacturing pulp from straw KESKULABORATORIO - CENTRALLABORATORIUM OY 13 Aug 1976 [4 Dec 1975] 33822/76 Heading D2W Pulp is produced from straw by a process which comprises treating the straw with an alkaline liquid in the presence of oxygen at 80‹-170‹C for 15 to 20 minutes in a single stage, the amount of alkali used being 14-16 wt. % based on the dry wt. of the reactants and the reaction pressure of oxygen being 1.4-1.6 MPa. The treatment causes defiberisation of the straw and precipitation of silicates therein.
GB33822/76A 1975-12-04 1976-08-13 Method for the production of pulp Expired GB1536886A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI753423A FI54157C (en) 1975-12-04 1975-12-04 FOERFARANDE FOER FRAMSTAELLNING AV KEMISK MASSA AV HALM

Publications (1)

Publication Number Publication Date
GB1536886A true GB1536886A (en) 1978-12-29

Family

ID=8509593

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33822/76A Expired GB1536886A (en) 1975-12-04 1976-08-13 Method for the production of pulp

Country Status (2)

Country Link
FI (1) FI54157C (en)
GB (1) GB1536886A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004013409A1 (en) * 2002-07-25 2004-02-12 Coffin World Water Systems Apparatus and method for treating black liquor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004013409A1 (en) * 2002-07-25 2004-02-12 Coffin World Water Systems Apparatus and method for treating black liquor

Also Published As

Publication number Publication date
FI54157B (en) 1978-06-30
FI54157C (en) 1978-10-10
FI753423A (en) 1977-06-05

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee