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Preparation method of broadleaf wood dissolving pulp

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Title:
Preparation method of broadleaf wood dissolving pulp
Author: SHEN PEIYAN ; YIN MENGWEI ; DONG CUIHUA ; PANG ZHIQIANG ; LU XIANQIN ; JI HAIRUI
Subjects: APPARATUS THEREFOR ; PAPER-MAKING ; PRODUCTION OF CELLULOSE ; PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS ; REGENERATION OF PULPING LIQUORS ; TEXTILES
Description: The invention belongs to the technical field of dissolving pulp preparation, and particularly relates to a preparation method of broadleaf wood dissolving pulp. The preparation method of the broadleaf wood dissolving pulp is characterized by comprising the following steps: (1) carrying out steaming treatment on broadleaf wood chips and then carrying out extrusion treatment; (2) pretreating the extruded wood chips by using a mixed solution of p-toluenesulfonic acid, sodium hypochlorite and sodium chlorite to obtain crude pulp, performing ultrasonic dispersion treatment on the crude pulp, and then washing and filtering the pulp until the crude pulp is neutral; (3) carrying out two-stage oxygen delignification treatment on the slurry; (4) carrying out chlorine dioxide bleaching treatment on the pulp subjected to oxygen delignification; (5) carrying out secondary bleaching treatment on the pulp by using enhanced alkali to obtain the dissolving pulp. The method has the beneficial effects that the reaction conditio
Creation Date: 2021
Language: Chinese;English
Source: esp@cenet

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