文献类型：期刊文献

中文题名：超声波辅助木片常压浸渍及其漂白

英文题名：Analysis of Ultrasonic Assisted Wood-chip Impregnation at Atmospheric Pressure and Bleaching

作者：解存欣[1] 邓拥军[1,2] 焦健[1,2] 李红斌[1,2] 吴珽[1,2] 房桂干[1,2]

第一作者：解存欣

机构：[1]中国林业科学研究院林产化学工业研究所,生物质化学利用国家工程实验室,国家林业和草原局林产化学工程重点实验室,江苏省生物质能源与材料重点实验室,江苏南京210042;[2]中国林业科学研究院林业新技术研究所,北京100091

年份：2019

卷号：53

期号：5

起止页码：34-38

中文期刊名：生物质化学工程

外文期刊名：Biomass Chemical Engineering

收录：北大核心:【北大核心2017】；

基金：国家重点研发计划资助项目(2017YFD0601005)

语种：中文

中文关键词：超声波;桉木;杨木;化机浆;常压浸渍

外文关键词：ultrasonic;eucalyptus;poplar;chemimechanical pulp;impregnation at atmospheric pressure

分类号：TQ35;TS7

摘要：采用化学热磨机械浆(CTMP)工艺,以桉木与杨木2种木材为原料,初步研究了超声波辅助木片常压浸渍及其漂白效果。通过监测体系中的残余氢氧化钠的量来探究外部环境体系(温度、时间和用碱量)对超声波辅助木片常压浸渍的影响,结果表明:超声波辅助处理浸渍,桉木为温度75℃,时间30 min,用碱量6%;杨木为温度75℃,时间30 min,用碱量5%,此较优条件下,桉木白度提高2.83%(ISO),残余过氧化氢质量分数提高了4.4个百分点,碱吸收量达41.5 kg/t,较未经超声波处理后的桉木的碱吸收量提高了5.06%;杨木白度无变化,而残余过氧化氢质量分数提高了2.73个百分点,碱吸收量达38.75 kg/t,较未经超声波处理的杨木碱吸收量提高了6.15%。
The ultrasound assisted impregnation at atmospheric pressure and its bleaching properties were studied with eucalyptus and poplar as raw materials by chemical thermomechanical pulp(CTMP)process.The effects of external factors such as impregnation temperatures,impregnation time and impregnation alkali amount on ultrasound assisted impregnation system were explored by continuously monitoring the change of amount of liquid absorbed and residual sodium hydroxide in impregnation system.The experimental results show that the optimum conditions for ultrasonic assisted impregnation were the temperature of 75℃,the time of 30 min and the alkali amount of 6%for eucalyptus,and the temperature of 75℃,the time of 30 min and the alkali amount of 5%for poplar.In this case,for eucalyptus,the brightness increased by 2.83%(ISO)and the residual hydrogen peroxide content increased by 4.4 percent point,the alkali absorption was 41.5 kg/t,which was 5.06%higher than that without ultrasonic treatment;for poplar,the brightness didn??t change,the residual hydrogen peroxide content increased by 2.73 percent point and the alkali absorption was 38.75 kg/t,which was 6.15%higher than that without ultrasonic treatment.