ON THE BLACK LIQUOR AND RECYCLE COOKING OF AS-AQ STRAW PULP  

作　　者：HaiqiangShi BeihaiHe BingyueLiu 

机构地区：[1]StateKeyLaboratoryofPulpandPaperEngineering,SouthChinaUniversityofTechnology,Guangzhou510640 [2]DalianInstituteofLightIndustry,Dalian116034

出　　处：《天津科技大学学报》2004年第A02期285-290,共6页Journal of Tianjin University of Science & Technology

摘　　要：Thick black liquor, thin black liquor and solid state sodium hydroxide are added to the liquor treated by sulfur dioxide, then the blended liquor is used to recycle cooking of straw pulp. The black liquor, separated liquor and pulp of every cycles are analyzed respectively. Result shows that the content of lignin and organism in recycle black liquor and separated liquor increases faster in the first three cycles and then continues to increase slowly till four or five times, after that it trends to a stable state. The main organism separated from waste liquor of AS-AQ treated by sulfur dioxide is alkali-lignin, above 50% of total lignin in black liquor. The yield of pulp made from recycle cooking is steady, the hardness of pulp has a great improvement with recycle cooking. The brightness of pulp reduces correspondingly before bleaching, and after bleaching the brightness of pulp is relatively high and steady at the same sodium hypo chlorite dosage.Thick black liquor, thin black liquor and solid state sodium hydroxide are added to the liquor treated by sulfur dioxide, then the blended liquor is used to recycle cooking of straw pulp. The black liquor, separated liquor and pulp of every cycles are analyzed respectively. Result shows that the content of lignin and organism in recycle black liquor and separated liquor increases faster in the first three cycles and then continues to increase slowly till four or five times, after that it trends to a stable state. The main organism separated from waste liquor of AS-AQ treated by sulfur dioxide is alkali-lignin, above 50% of total lignin in black liquor. The yield of pulp made from recycle cooking is steady, the hardness of pulp has a great improvement with recycle cooking. The brightness of pulp reduces correspondingly before bleaching, and after bleaching the brightness of pulp is relatively high and steady at the same sodium hypo chlorite dosage.

关 键 词：黑液 小麦AS-AQ纸浆 木质素 紫外分光光度计 二氧化硫酸比重计 循环蒸煮 

分 类 号：TS74[轻工技术与工程—制浆造纸工程]