CHEMI-MECHANICAL PULPING OF WHEAT STRAW AND BLEACHING OF PULPS

摘要：

The influence of operational variables in the Chemi-mechanical pulping of wheat straw viz. hydrogen peroxide (2％~5％ on oven-dry wheat straw), active alkali (calculated as NaOH, 2％~8％ on oven-dry wheat straw), chelating agent (EDTA on oven-dry wheat straw 0.1~0.8％), cooking time (45-90min) and temperature (60~80oC) on the pulp properties were studied in this work, as well as the optical properties of paper sheets made from it. The ECF bleaching sequence was investigated. The optimal pretreatment condition was as follows: active charge 6％, hydrogen peroxide 4％, EDTA 0.5％, time 1h, and temperature 70oC. What’s more, the double pretreatment can got better results with brightness 44.1％ISO. ECF bleaching (D1P3P2, D as an activation stage) can provide bleached pulp with brightness 72.5％.

关键词： wheat straw Chemi-mechanical pulping bleaching

作者: Wang Qiang Chen Kefu Chen Jiachuan Li Jun Liu Shanshan

作者单位: State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou,510640, Key Laboratory of Paper Science and Technology of Ministry of Education Shandong Institute of Light Institute of Chemical Industry of Forest Products,Chinese Academy of Forestry, Nanjing, 210042,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: 739-742

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）