华南理工大学学报(自然科学版) ›› 2016, Vol. 44 ›› Issue (6): 21-26.doi: 10.3969/j.issn.1000-565X.2016.06.004

• 化学化工 • 上一篇    下一篇

氧碱法脱除烟梗中木质素降低烟气有害成分

易聪华1 张素文1 冀唯妮1 孔浩辉2 周瑢2   

  1. 1. 华南理工大学 化学与化工学院,广东 广州 510640; 2. 广东中烟工业责任有限公司 技术中心,广东 广州 510385
  • 收稿日期:2015-11-25 修回日期:2015-12-28 出版日期:2016-06-25 发布日期:2016-05-03
  • 通信作者: 易聪华(1979-),女,博士,副教授,主要从事工业木质素的资源化利用研究. E-mail:chyi@scut.edu.cn
  • 作者简介:易聪华(1979-),女,博士,副教授,主要从事工业木质素的资源化利用研究.
  • 基金资助:
    国家重点基础研究发展计划项目(2012CB215302);广东中烟工业责任有限公司项目(粤烟工05XM-QK[2014]008)

Reduction of Harmful Components in Cigarette Smoke via Delignification of Tobacco Stem by Means of Oxygen Alkali Technology

YI Cong-hua1 ZHANG Su-wen1 JI Wei-ni1 KONG Hao-hui2 ZHOU Rong2   

  1. 1.School of Chemistry and Chemical Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China; 2.Technology Center,China Tobacco Guangdong Industrial Co.,Ltd.,Guangzhou 510385,Guangdong,China
  • Received:2015-11-25 Revised:2015-12-28 Online:2016-06-25 Published:2016-05-03
  • Contact: 易聪华(1979-),女,博士,副教授,主要从事工业木质素的资源化利用研究. E-mail:chyi@scut.edu.cn
  • About author:易聪华(1979-),女,博士,副教授,主要从事工业木质素的资源化利用研究.
  • Supported by:
    Supported by the National Program on Key Basic Research Project of China(2012CB215302)

摘要: 采用氧碱法预处理烟梗,脱除烟梗中的木质素,并利用处理后烟梗制成烟草薄片,研究烟气中有害成分的变化,得到氧碱法处理的最佳工艺条件如下:碱液与烟梗液固比,10mL/g;氢氧化钾相对于绝干烟梗质量的百分比,35%;反应温度,120 ℃;反应时间,40min;氧气压力,0. 6MPa;保护剂 MgCO 3 使用量,0. 5%. 与传统水浸泡预处理工艺相比,氧碱法处理后木质素含量降低率达到 47. 9%,裂解气中苯酚含量降低 61%,邻苯二酚含量降低 25%,总有害物质含量降低 38%.

关键词: 烟梗, 氧碱法, 烟气, 脱木质素

Abstract: Tobacco stem was delignified by means of the oxygen alkali technology and was then used to produce to- bacco sheets.The variations of harmful components in the cigarette smoke were investigated,and the optimal condi- tions of oxygen alkali technology were determined as follows: a liquid-solid ratio of alkali liquor to tobacco stem of 10mL/g,a mass ratio of potassium hydroxide to tobacco stem of 35%,a reaction temperature of 120℃,a reaction time of 40min,an oxygen pressure of 0. 6MPa and a dosage of protective agent MgCO3 of 0. 5%.It is found that,as compared with the traditional water soaking pretreatment,the pretreatment with oxygen alkaline is more effective because it helps to reduce the contents of lignin,phenol,pyrocatechol and the total harmful substance by 47. 9%,61%,25% and 38%,respectively.

Key words: tobacco stem, oxygen alkali technology, cigarette smoke, delignification

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