不同介质下松脂蒸馏中松香树脂酸的异构化反应

doi:10.3969/j.issn.0253-2417.2018.04.019

林产化学与工业 ›› 2018, Vol. 38 ›› Issue (4): 124-128.doi: 10.3969/j.issn.0253-2417.2018.04.019

• 研究报告 • 上一篇

不同介质下松脂蒸馏中松香树脂酸的异构化反应

岳贤田^1,2, 曾韬¹, 凌清华³, 王雪源¹

1. 南京林业大学化学工程学院, 江苏南京 210037;
2. 巢湖学院化学与材料工程学院, 安徽合肥 238000;
3. 云南森源化工有限公司, 云南双柏 675100

收稿日期:2018-01-16 出版日期:2018-08-25 发布日期:2018-08-10
通讯作者: 曾韬,教授,博士生导师,从事林产化工专业教学和科研工作;E-mail;zengtao@njfu.edu.cn。 E-mail:zengtao@njfu.edu.cn
作者简介:岳贤田(1980-),男,安徽芜湖人,博士生,研究方向为林产化学加工工程
基金资助:
国家林业科技推广计划项目（[2014]39）

Isomerization of Resin Acid Under Desorption-distillation Processes with Different Medium

YUE Xiantian^1,2, ZENG Tao¹, LING Qinghua³, WANG Xueyuan¹

1. College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China;
2. College of Chemistry and Engineering, Chaohu University, Hefei 238000, China;
3. Yunnan Senyuan Chemical Co. Ltd., Shuangbai 675100, China

Received:2018-01-16 Online:2018-08-25 Published:2018-08-10

摘要/Abstract

摘要： 探讨了以H₂O、N₂和CO₂等作为蒸馏介质，松脂蒸馏所得产品松香树脂酸发生异构化反应的变化规律。考察了蒸馏时出锅温度、介质类型和流量对树脂酸异构化反应的影响，结果表明：水蒸气作为蒸馏介质时枞酸型树脂酸的异构化反应较为激烈，而N₂和CO₂作为蒸馏介质时异构化反应较为温和，介质流量对异构化反应的影响不明显。采用气相色谱（GC）和气相色谱-质谱联用（GC-MS）分析了发生异构化反应的松香的树脂酸组成，并对产品松香的结晶趋势进行了检测观察，采用GC分析技术对低温阶段的结晶松香进行了树脂酸组成分析。结晶趋势检测显示低温阶段3种蒸馏介质都呈现出不同程度的结晶趋势，其中N₂作为蒸馏介质时，蒸馏温度较低，产品松香的结晶趋势最小；结晶机理探讨显示，枞酸和长叶松酸含量的高低及其比值决定了产品松香结晶趋势的大小。

关键词: 熔解松脂液, 介质, 树脂酸, 异构化, 结晶

Abstract: The variation regularity of isomerization reaction of rosin resin acid was discussed after desorption-distillation dissolution of rosin liquid with H₂O,N₂,CO₂ as distillation medium. The effects of desorption-distillation temperature, kinds of medium and medium flow rates on the isomerization of resin acid were investigated. The results showed that the isomerization reaction of abietic resin acid was more intense when water vapor was used as desorption-distillation medium, while the isomerization reaction was mild when N₂ and CO₂ were used as desorption-distillation medium, and the effect of medium flow on isomerization reaction was not obvious. The resin acid composition of rosin was analyzed by gas chromatography(GC) and gas chromatography-mass spectrometry(GC-MS).The crystal tendency of the product was observed. The resin acid composition of the crystalline rosin at the low temperature stage was analyzed by GC. The results of crystallization tendency showed that the three kinds of desorption-distillation medium showed different degrees of crystallization tendency at the low temperature stage, the desorption-distillation temperature of N₂ desorption-distillation medium was the lowest, and the crystallization tendency of the product rosin was the smallest; Crystallization mechanism showed that the abietic acid and palustric acid content level and its ratio determined the size of the product rosin crystallization tendency.

Key words: melt rosin liquid, medium, resin acid, isomerization, crystallization

中图分类号:

TQ35

岳贤田, 曾韬, 凌清华, 王雪源. 不同介质下松脂蒸馏中松香树脂酸的异构化反应[J]. 林产化学与工业, 2018, 38(4): 124-128.

YUE Xiantian, ZENG Tao, LING Qinghua, WANG Xueyuan. Isomerization of Resin Acid Under Desorption-distillation Processes with Different Medium[J]. Chemistry and Industry of Forest Products, 2018, 38(4): 124-128.

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不同介质下松脂蒸馏中松香树脂酸的异构化反应

Isomerization of Resin Acid Under Desorption-distillation Processes with Different Medium

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