慈竹硫酸盐法蒸煮历程的研究

Research on the Mechanism of Sinocalamus Affinis Kraft Cooking

关键词:  慈竹  硫酸盐法  蒸煮  木质素脱除率  碳水化合物降解率

Key Words:sinocalamus affinis  kraft  cooking  the delignification rate  the carbohydrate degradation rate

摘要:本研究以慈竹为研究对象，对其进行化学组分分析，研究了其在硫酸盐法蒸煮过程中木质素含量、综纤维素含量和聚戊糖含量的变化规律，揭示蒸煮历程。结果表明，慈竹中纤维素、木质素和半纤维素的含量分别为44.35%、25.88%和28.27%，是一种优良的非木材造纸纤维原料。慈竹硫酸盐法蒸煮的脱木质素过程分为3个阶段，分别为大量脱木质素阶段、补充脱木质素阶段、残余脱木质素阶段。在大量脱木质素阶段，木质素脱除率达46.40%，碳水化合物降解率为28.11%，聚戊糖溶出率为48.63%；在补充脱木质素阶段，木质素脱除率达89.72%，碳水化合物降解率为38.71%，聚戊糖溶出率为97.93%；残余脱木质素阶段，木质素脱除率为96.14%，碳水化合物降解率达38.82%，聚戊糖溶出率94.39%。

Abstract:In this paper， the chemical components of sinocalamus affinis were analyzed. The lignin content， holocellulose content， and pentoan content during kraft cooking were studied， and the cooking process was revealed. The results showed that the content of cellulose， lignin， and hemicellulose were 44.35%， 25.88%， and 28.27%， respectively. Indicating that sinocalamus affinis was an excellent non-wood papermaking fiber raw material. The delignification process of sinolalamus affinis kraft cooking could be divided into three stages including the stage of bulk delignification， the stage of supplementary delignification， the stage of residual delignification. In the stage of bulk delignification， the delignification rate reached to 46.40%， the carbohydrate degradation rate reached to 28.11%， and the pentosan dissolution rate reached to 48.63%. In the stage of supplementary delignification， the delignification rate reached to 89.72%， the carbohydrate degradation rate was 38.71% and the pentosan dissolution rate was 97.93%. In the stage of residual delignification， the delignification rate was 96.14%， the carbohydrate degradation rate was 38.82%， and the pentosan dissolution rate was 94.39%.