加勒比松Na_2S预处理硫酸盐─AQ蒸煮机理及脱木素反应活化能  

The mechanism and delignification activation energy of Na_2S pretreatment Kraft-AQ pulping of Caribbean pine

作　　者：周敬红[1] 余家鸾[1] 

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室,广州510641

出　　处：《纤维素科学与技术》1996年第4期19-26,共8页Journal of Cellulose Science and Technology

基　　金：国家教委博士学科点基金

摘　　要：对加勒比松Na2S预处理硫酸盐─AQ法蒸煮过程纤维细胞各部位木素与Na2S的反应和溶出规律进行了研究．在本试验条件下，Na2S预处理段及硫酸盐─AQ蒸煮段脱木素反应活化能分别为41．1kJ／mol及94．2kJ／mol，其相对反应速率常数分别用下列方程式计算：KR1=e12.28－4952/T;KR2=e26020-11349/T.The mechanism and kinetics of Na2S pretreatment Kraft-AQ pulping of Caribbean Pine (Pinus Caribbean Morelet) have been studied, the activation energy of delignification have been calculated. Under the experimental conditions, the delignification activation energy of the Na2S pretreatment stage and the Kraft-AQ cooking stage were 41. l kJ/mol and 94. 2 kJ/mol respetively. The relative rate constants can be calcu lated by the following equations: KR1 =e13.28-4952/T, KR2=e26.20-11349/T.

关 键 词：硫酸盐 蒸煮 脱木素率 活化 纸浆 造纸 硫化钠 

分 类 号：TS743[轻工技术与工程—制浆造纸工程] TS749