Method for delignification of wood fibers

• Main Authors: ZHOU SHILE, WU SHUBIN
• Format: Patent
• Language: Chinese; English
• Published: 11.06.2024
• 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 discloses a wood fiber delignification method, which comprises the following steps: preparing choline chloride and aliphatic diol or/and aliphatic carboxylic acid into a eutectic, adding a wood fiber raw material into the eutectic for delignification treatment, and carrying out solid-liquid separation to obtain a solid which is a delignification product. According to the wood fiber delignification method, part of lignin in the wood fiber raw material can be removed under the mild condition, the effect on polysaccharide polymers is relatively weak, more polysaccharide polymers and alpha-cellulose can be reserved, gas with pungent smell is not prone to being generated in the operation process, the performance of a solvent system is easy to regulate and control, and the method is suitable for industrial production. And the solvent system can be regenerated and recycled, and the method has a wide application prospect in the field of biomass refining. 本发明公开了一种木质纤维脱木质素的方法，其包括以下步骤：将氯化胆碱与脂肪二醇或/和脂肪羧酸制成共熔