STUDY ON BLEACHED CHEMI-MECHANICAL PULPING OF WHEAT STRAW

摘要：

The two-stage bleached chemi-mechanical pulping of wheat straw is studied in this paper. The wheat straw pulp yield of CMP can reach more than 79.1％. The high yield pulp is bleached by chlorine dioxide first and by hydrogen peroxide subsequently. The results indicate that the optimum bleaching conditions are as follows: during chlorine dioxide bleaching stage, pulp concentration is 15％-20％, ClO2 rate is 1.5％-2.0％, and time is 20min at room temperature. During the hydrogen peroxide bleaching stage, pulp concentration is 10％~15％, H2O2 rate is 7％, temperature is 75~85℃, and time is 60min. In the optimum conditions, the pulp whiteness is higher than 72.53％ISO and tensile strength index 51.22 N·m/g, tear index 4.503mN·m2/g, burst index 2.121 kPa·m2/g respectively.

关键词： wheat straw bleached chemi-mechanical pulp chlorine dioxide pretreatment hydrogen peroxide bleaching

作者: Zhang Lin Zhang Meiyun Wu Yangyu

作者单位: College of Papermaking Engineering, Shaanxi University of Science and Technology, Xian, 710021,China

会议类型: 国际会议

会议名称: 4th ISETPP(第四届制浆造纸新技术国际研讨会)

会议地点: 广州

会议语种:英文

页码: 518-521

在线出版日期: 2010-11-08（万方平台首次上网日期，不代表论文的发表时间）