The Use of Hydrogen Peroxide in Bleaching Ethanol-alkali Pulp of Aspen

摘要：

The use of hydrogen peroxide in an AOpP TCF bleaching of ethanol-alkali pulp of aspen was studied in this paper.The results showed that the optimal conditions for the strengthened oxygen bleaching(AOp)were pulp consistency 10％,the pressure of oxygen 0.6MPa,temperature 100℃,time 120 min,NaOH 7％,MgSO4 1％ and H2O2 1.5％.The brightness of the pulp increased significantly from 34.1％ ISO to 72.2％ISO.The optimal conditions of H2O2 post-bleaching were pulp consistency 10％,NaOH/H2O2 ratio 1.5,time 120 min,temperature 70℃ and H2O2 3％.The final results of AOpP bleaching of the ethanol-alkali pulp of aspen showed that brightness increased to 85.6％ ISO,kappa number,viscosity and yield decreased to 3.12,967.62 mL.g-1 and 91.66％ respectively.All these properties met the need required by high brightness chemical pulp.

关键词： hydrogen peroxide oxygen bleaching strengthened oxygen bleaching

作者: ZHAO CHANG-MING ZHOU JING-HUI CHENG GUAN-JIE

作者单位: Dalian Polytechnic University,Dalian,Liaoning,116034,China;Liaoning Province Key Laboratory of Pulp and Paper Engineering,Dalian,Liaoning,116034,China

会议类型: 国际会议

会议名称: 第二届国际造纸与环境学术会议(The Second International Papermaking & Environment Conference)

会议地点: 天津

会议语种:英文

页码: 411-414

在线出版日期: 2008-05-14（万方平台首次上网日期，不代表论文的发表时间）