构皮碱性亚硫酸钠—助剂法蒸煮历程  

The Mechanism in Alkaline Sodium Sulfite Pulping with Additives of Papermulberry

作　　者：文琼菊[1] 聂勋载[1] 张志芬[1] 

机构地区：[1]湖北工学院化学工程系,湖北武汉430068

出　　处：《湖北工学院学报》2000年第1期34-37,共4页

摘　　要：对构皮碱性亚硫酸钠—助剂法蒸煮历程的研究表明 ,其脱木素历程可分为大量脱木素阶段和补充脱木素阶段 .大量脱木素阶段 ,木素脱除率为 90 .35 % ,在补充脱木素阶段 ,木素的总脱除率达 96 .2 6 % .Chemical composition, fiber morphology , various pulping methods, and pulping conditions of the papermulberry bark in Hubei were investigated. The mechanism in alkaline sodium sulfite pulping with additives (AS-X) of the bark was studied. The results show that the delignification of papermulberry bark AS-X pulping can be divided into two phases: 1) bulk phase of delignification at temperatures below 158 ℃, in which 90.35% delignification is attained. 2) Supplementary phase at temperature 158 ℃ for 120 min, in which delignification amounts to 96.25%. It is shown that cooking 2 hours at temperature 158 ℃ is applicable. After 2 hours at 158 ℃, dissolution of lignin is much slower. Therefore the cooking time after that may be completely eliminated.

关 键 词：构皮 碱性亚硫酸钠 助剂法 蒸煮历程 制浆 

分 类 号：TS743.11[轻工技术与工程—制浆造纸工程]