Cellulose prepn with low lignin content - by removing lignin from waste paper or cardboard with high lignin content

Cellulose with a lignin content of 1.5% for prodn of high quality paper is produced by removing lignin from waste paper or cardboard, and opt. other vegetable packaging material, esp. material based on wood wool and/or straw, that contains >1.5% lignin. Enables a high quality prod. to be produced...

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Bibliographic Details
Format Patent
LanguageDutch
English
Published 30.12.1975
Subjects
APPARATUS THEREFOR
CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
PAPER-MAKING
PRODUCTION OF CELLULOSE
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS
REGENERATION OF PULPING LIQUORS
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Summary:Cellulose with a lignin content of 1.5% for prodn of high quality paper is produced by removing lignin from waste paper or cardboard, and opt. other vegetable packaging material, esp. material based on wood wool and/or straw, that contains >1.5% lignin. Enables a high quality prod. to be produced from low quality waste matl. Avoids environmental pollution, such as occurs when the waste matl. is burned.
Bibliography:Application Number: NL19740008641