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林产化学与工业

林产化学与工业 ›› 2012, Vol. 32 ›› Issue (6): 1-4.

• 1研究报告 •    下一篇

有机酸生物炼制玉米秸秆皮浆短流程ECF漂白特性

黄萍, 翟华敏   

  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
  • 收稿日期:2012-03-12 修回日期:1900-01-01 出版日期:2013-12-30 发布日期:2013-12-30
  • 通讯作者: 翟华敏,教授,博士,博士生导师,研究领域为以制浆造纸为基础的生物炼制技术;E-mail:hzhai@njfu.edu.cn。

Short Process ECF Bleaching of Corn Stalk Rind Pulp by Organic Acid Biorefinery

HUANG Ping, ZHAI Hua-min   

  1. Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology,Nanjing Forestry University, Nanjing 210037, China
  • Received:2012-03-12 Revised:1900-01-01 Online:2013-12-30 Published:2013-12-30

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摘要： 为寻求合理白度、节省资源、节能减排的漂白途径,研究了有机酸玉米秸秆皮生物炼制浆(OABCSRP)的短流程碱处理-二氧化氯-二氧化氯(ED1D2)无元素氯(ECF)漂白特性。结果表明:碱处理对OABCSRP具有良好的脱木质素选择性,是后续二氧化氯(D)漂白的重要基础,在浆浓10.0%(质量分数)、温度70℃、时间1.5h和用碱量4.0%的条件下碱处理,可获得率为95.4%、脱木质素率23.5%、黏度115mPa·s、白度44.2%(ISO)的纸浆;在碱处理过程中浆料中木质素和碳水化合物中的酯键发生了水解;ECF短流程ED1D2在4.0% NaOH及总ClO2用量3.6%条件下,经ED1D2漂白后,可获积累得率为88.0%、黏度124mPa·s、白度74.7％(ISO)的优良纸浆。

关键词: 有机酸溶剂浆, 生物炼制, 碱处理, 短流程, ECF漂白

Abstract: To obtain a bleaching process with a reasonable brightness, low consumption of fiber resource and energy, the bleaching properties of organic acid biorefinery corn stalk rind pulp (OABCSRP) by a short ECF bleaching process of ED1D2 were investigated in present study. The results indicates alkali extraction is high selective on delignification of OABCSRP, and the extraction is a foundation for next effective D1D2 bleaching stages. A pulp with 95.4% yield, 23.5% delignification ratio, 115 mPa·s viscosity and 44.2% ISO brightness was obtained when pulp with 10.0% concentration was treated by 4.0% NaOH for 1.5 h at 70 ℃. Interesting findings revealed that the ester linkages between lignin and carbohydrate were hydrolyzed in the extraction process. The pulp with an accumulated yield 88.0%, 124 mPa·s and brightness 74.7% ISO respectively when 4.0% NaOH and 3.6% ClO2 dosages were applied in ED1D2 bleaching. ED1D2 short bleaching process was suitable for OABCSRP bleaching to produce cultural papers.

Key words: organic acid solvent pulp, biorefinery, alkali extraction, short process, ECF bleaching

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