预浸渍溶出物对巨尾桉机械浆漂白性能的影响  

Effects of Pre-impregnation Soluble Substrates on the Bleaching Performance of Eucalyptus urophylla×E.grandis Mechanical Pulp

作　　者：焦健[1,2] 焦婷 王友成 邓拥军 朱北平[1] 田庆文[1] 韩善明[1] 房桂干[1,2,3] JIAO Jian;JIAO Ting;WANG Youcheng;DENG Yongjun;ZHU Beiping;TIAN Qingwen;HAN Shanming;FANG Guigan(State Key Lab for Biomass Chemical Utilization,Key Lab of Forest Chemical Engineering,SFA,Jiangsu Provincial Key Lab of Biomass Energy and Material,Institution of Chemical Industry of Forest Products,CAF,Nanjing,Jiangsu Province,210042;Collaborative Innovation Center for High Efficiency Processing and Utilization of Forestry Resources,Nanjing Forestry University,Nanjing,Jiangsu Province,210037;Shandong Huatai Paper Co.,Ltd.,Dongying,Shandong Province,257335)

机构地区：[1]中国林业科学研究院林产化学工业研究所,江苏省生物质能源与材料重点实验室,国家林业局林产化学工程重点开放性实验室,生物质化学利用国家工程实验室,江苏南京210042 [2]南京林业大学林业资源高效加工利用协同创新中心,江苏南京210037 [3]山东华泰纸业集团,山东东营257335

出　　处：《中国造纸学报》2024年第1期27-37,共11页Transactions of China Pulp and Paper

基　　金：国家自然科学基金重大项目课题(31890771);江苏省生物质能源与材料重点实验室重点项目(JSBEM-S-202309);泰山产业领军人才工程专项经费(tscy20200213)。

摘　　要：以巨尾桉热磨机械浆为研究对象,研究了3种化学品用量下(氢氧化钠10 kg/t、氢氧化钠30 kg/t、氢氧化钠10 kg/t+过氧化氢30 kg/t),3种预浸渍溶出物保留工艺对后续浆料漂白性能的影响。利用元素分析及裂解气质联用,比较了3种预浸渍溶出物的化学结构。结果表明,预浸渍处理浆的漂白性能均比桉木单段漂浆料漂白性能有较大提升,不同化学品用量预浸渍处理产生的预浸渍溶出物,在不同保留程度下,会对后续浆料的漂白性能有不同程度的负面作用。浆料中氮元素的溶出程度与浆料后续漂白性能的提升具有一定关联性。To study the effects of pre-impregnation on the bleaching performance of the pulp,Eucalyptus urophyllax E.grandis mechanical pulp was pre-impregnated via three types of pre-impregnation soluble substrates retention processes at three chemical dosages(NaOH 10 kg/t,NaOH 30 kg/t,NaOH 10 kg/t+H2O_(2)30 kg/t).The chemical structure of the three pre-impregnation soluble substrates were compared by el-emental analysis and pyrolysis-gas chromatography/mass spectrometry.The results showed that the bleaching performances of pre-impregnat-ed pulps using three processes all had a greater improvement than that of eucalyptus single-stage bleaching pulp.Pre-impregnated soluble substrates produced by pre-impregnation treatment with different chemical dosages could have a negative effect on the bleaching properties of pulps to varying degrees with different retention levels.There was a correlation between the degree of nitrogen dissolution from the pulp and the subsequent improvement of bleaching performance of the pulp.

关 键 词：桉木机械浆 漂白 预浸渍 溶出物 

分 类 号：TS749.3[轻工技术与工程—制浆造纸工程]