麦草低温氧碱蒸煮黑液降黏技术  

Viscosity Reduction Technology of Wheat Straw Alkaline-oxygen Pulping Black Liquor at Low Temperature

作　　者：陈双双[1] 杨旭 曹云峰[1] 杨洋[1] 刘祝兰[1] 

机构地区：[1]南京林业大学江苏省制浆造纸科学与技术重点实验室,江苏南京210037 [2]浙江省木业产品质量检测中心,浙江湖州313000

出　　处：《林产化学与工业》2012年第2期131-134,共4页Chemistry and Industry of Forest Products

基　　金：江苏省制浆造纸科学与技术重点实验室开放基金(201017);"江苏省青蓝工程中青年学术带头人培养对象"省教育厅资助课题(164105308);江苏高校优势学科建设工程资助项目(无编号)

摘　　要：麦草经碱法蒸煮后,所得浆料不经洗涤,直接通入氧气进行处理。以黑液黏度,浆料卡伯值为考核指标,设置4因素3水平正交试验,对试验结果作极差分析发现,在用碱量0～2%、氧压0.2～0.6 MPa、温度70～100℃和时间30～90 min内得到较适宜的工艺条件为:用碱量1%,氧压0.6 MPa,温度85℃,时间60 min。氧碱蒸煮结果为:黑液黏度3.4 mPa.s,浆料卡伯值17.9。与第一段碱法蒸煮相比,黑液黏度降低33.3%,浆料卡伯值降低11.8%。The wheat straw fibers after alkaline-AQ pulping was handled by oxygen directly without washing in present study. A L9 （3^4 ） orthogonal design, including the factors of alkali charge, oxygen dosage, cooking temperature and holding time, was applied to evaluate their influences on black liquor viscosity and pulp Kappa number. The high quality pulp fibers with black viscosity 3. d mPa· s and Kappa number 17.9 was obtained when the unwashed fibers were treated by 1% alkali charge （ as NaOH） and 0.6 MPa oxygen pressure for 60 minutes at 85 ℃. In contrast to the pulp after first stage alkaline pulping, the black liquor viscosity and Kappa number decreased 33.3% and 11.8%, respectively.

关 键 词：麦草 氧碱蒸煮 黑液黏度 卡伯值 

分 类 号：TQ351[化学工程] TS749.7[轻工技术与工程—制浆造纸工程]