Method for producing acetification-grade dissolving pulp by using veneer

• Main Authors: WANG DONG, YU DONGMEI, LI RONGGANG, WU CHAOJUN, LI SHUPING
• Format: Patent
• Language: Chinese; English
• Published: 01.03.2019
• Subjects: APPARATUS THEREFOR; PAPER-MAKING; PRODUCTION OF CELLULOSE; PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; TEXTILES

The invention relates to the technical field of dissolving pulp preparation and particularly relates to a method for producing acetification-grade dissolving pulp by using veneer. The method comprisesthe following steps: adding auxiliaries for prehydrolysis; Soda/AQ cooking stage I; Soda/AQ cooking stage II; OPDQEPP bleaching; enzyme collaborative treatment. The veneer acetification-grade dissolving pulp with high purity and high reaction activity is prepared; the applied chemicals are clean and environmentally friendly, and the production technology is clean. 本发明涉及溶解浆制备技术领域，特别涉及种利用杨木板皮生产醋化级溶解浆的方法：添加助剂预水解；Soda/AQ蒸煮Ⅰ段；Soda/AQ蒸煮Ⅱ段；ODEP漂白；酶协同处理。制备了高纯度和高反应活性的杨木板皮醋化级溶解浆；所用化学品清洁环保，生产工艺清洁。