Method for producing cellulose

One embodiment of the present invention provides a method for producing a cellulose from chemical pulp by means of a treatment liquid that is composed of an aqueous solution containing a mineral acid and a peroxide, which is characterized by comprising at least the steps (a)-(c) described below, and...

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Bibliographische Detailangaben
Hauptverfasser:	SATO, YUUYA, HAMAGUCHI, TAKAYOSHI, OYANAGI, KENJI, TSURUGA, TAKAMITSU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	APPARATUS THEREFOR CHEMISTRY COMPOSITIONS BASED THEREON DERIVATIVES THEREOF METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PAPER-MAKING POLYSACCHARIDES PRODUCTION OF CELLULOSE PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS REGENERATION OF PULPING LIQUORS TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	One embodiment of the present invention provides a method for producing a cellulose from chemical pulp by means of a treatment liquid that is composed of an aqueous solution containing a mineral acid and a peroxide, which is characterized by comprising at least the steps (a)-(c) described below, and which is also characterized in that a regenerated treatment liquid prepared in the step (c) is reused as a treatment liquid in the step (a). (a) a step for obtaining a cellulose by lowering the degree of polymerization of chemical pulp by means of hydrolysis using a treatment liquid that is composed of an aqueous solution containing a mineral acid and a peroxide (b) a step for separating the cellulose obtained in the step (a) and the used treatment liquid from each other (c) a step for preparing a regenerated treatment liquid by adding a mineral acid and/or a peroxide into the used treatment liquid, which has been separated in the step (b).