摘要
有机酸制浆高效利用原料,环境污染较小,是最有希望实现工业化的一类溶剂法制浆技术。有机酸制浆工艺流程一般包括备料、蒸煮、洗涤、漂白、溶剂回收和副产品回收等。蒸煮过程中,木素降解溶出,也有少部分纤维素和半纤维素水解生成低分子糖,灰分溶出较少。纸浆漂白一般采用过氧化氢漂白、氧脱木素和生物漂白等TCF漂白方式.所得纸浆的性能与传统制浆方法纸浆相近。黑液中的碳水化合物和木素容易分离纯化,且应用广泛。有机酸制浆要实现工业化,需在原料开发、流程模拟和优化等方面进一步深入研究。
Organic acid pulping utilizing the raw material efficiently and an enviromentlly friendly process is considered to be a kind of most promising to be commercialized organosov pulping technology. The process includs raw material preparation, cooking, washing, bleaching, solvent recovery and by-products recovery. In the cooking stage, the lignin in the raw material breaks down and dissolves, and part of cellulose and hemi- cellulose degrades to low molecular sugars, but the ash dissolves little. The resultant pulp can be bleached by TCF process including hydrogen peroxide bleaching ,oxygen delignification and bio-bleaching and the properties of the pulp are similar to those of the conventional pulp. Degraded lignin and carbohydrates in the spent liquor can be separated and purified easily which have extensive application potential. In order to industrialize the organic acid pulping process, more research on process simulation and optimization is necessary.
出处
《中国造纸》
CAS
北大核心
2008年第9期56-61,共6页
China Pulp & Paper
关键词
甲酸
乙酸
制浆
蒸煮
漂白
formic acid
acetic acid
pulping
cooking
bleaching
作者简介
李明飞先生，在读硕士研究生；主要研究方向：制浆工艺。（E-mail：lmfeifei @ sina.com ）
