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林产化学与工业 ›› 2021, Vol. 41 ›› Issue (5): 93-99.doi: 10.3969/j.issn.0253-2417.2021.05.014

• 研究报告 • 上一篇    下一篇

松脂气液平衡特性及其N2/CO2循环活气法蒸馏过程分析

侯文彪1, 江文夺1, 吴嘉超1, 梁杰珍2, 王琳琳2, 陈小鹏2,*()   

  1. 1. 广西梧州日成林产化工股份有限公司, 广西 梧州 543100
    2. 广西大学 化学化工学院, 广西石化资源加工及过程强化技术重点实验室, 广西 南宁 530004
  • 收稿日期:2020-10-09 出版日期:2021-10-28 发布日期:2021-11-04
  • 通讯作者: 陈小鹏 E-mail:lilm@gxu.edu.cn
  • 作者简介:陈小鹏, 教授, 博士生导师, 研究领域为天然产物深加工; E-mail: lilm@gxu.edu.cn
    侯文彪(1969-), 男, 广西梧州人, 工程师, 主要从事松香化学深加工的技术与管理工作
  • 基金资助:
    国家自然科学基金资助项目(31960294);国家自然科学基金资助项目(21878056);广西石化资源加工及过程强化技术重点实验室课题基金(2019Z002)

Vapor-liquid Equilibrium Properties of Pine Resin System and Development of N2/CO2 Circulating Active Gas Distillation Process

Wenbiao HOU1, Wenduo JIANG1, Jiachao WU1, Jiezhen LIANG2, Linlin WANG2, Xiaopeng CHEN2,*()   

  1. 1. Wuzhou Sunshine Forestry & Chemicals Co., Ltd. of Guangxi, Wuzhou 543100, China
    2. School of Chemistry and Chemical Engineering, Key Laboratory of Guangxi Petrochemical Resource processing and Process Intensification Technology, Guangxi University, Nanning 530004, China
  • Received:2020-10-09 Online:2021-10-28 Published:2021-11-04
  • Contact: Xiaopeng CHEN E-mail:lilm@gxu.edu.cn

摘要:

采用改进的Ellis平衡釜和气相色谱分析方法,测定了常压、温度428.15~488.15 K下松香质量分数为0~70%的松脂体系气液平衡数据,考察了松节油优油(α-蒎烯95.85%)和松节油中油(α-蒎烯36.00%)组分对松脂蒸馏解吸的影响。研究结果表明:松脂气液平衡温度随着松香质量分数增加而升高,说明松脂蒸馏时松节油含量越低蒸馏温度越高,即松节油组分难以从松脂中解吸出来,但松香作为不挥发组分对松节油馏出组分的含量影响不大。依据松脂气液平衡特性和解吸影响因素,针对松脂蒸馏过程设计了N2/CO2循环活气法改进工艺,以年产1万吨松香为计算基准,与传统过热水蒸气活气法蒸馏松脂相比,N2 /CO2循环活气法减少消耗标准煤567.4~694.0 t/a,减少温室气体CO2排放量2 080~2 545 t/a,减少冷却水消耗量1.329×105~1.624×105 m3/a;不需要油水分离和盐滤生产工序,所得松香松节油产品不夹带水分;无含松节油废气、废水和废盐排放,减少松节油损失13.52~29.72 t/a,减少废盐排放60 t/a,所得松香、松节油产品符合国标要求。

关键词: 松脂, 松香, 松节油, N2/CO2, 气液平衡

Abstract:

The vapor-liquid equilibrium data of pine resin system with the content of rosin among 0 to 70% as well as the effect of desorption of superior oil of turpentine(95.85% α-pinene) and medium oil of turpentine(36.00%α-pinene) from the distillation of oleoresin were determined by modified Ellis equilibrium cell and gas chromatography at the temperature of 428.15-488.15 K and atmospheric pressure. The results showed that the phase equilibrium temperature increased by the content increasing of rosin in oleoresin, which indicated that the lower concentration of turpentine in oleoresin was, the higher distillation temperature of oleoresin was, that was to say, the turpentine components were difficult to be desorbed from rosin. However, the content of rosin had little influence on vapor-liquid equilibrium data of distillate composition in turpentine. According to the results of vapor-liquid equilibrium properties and the effect of desorption, circulating N2 or CO2 distillation method the was designed to modify the process of pine gum distillation. Compared with traditional overheated steam method, the annual consume of standard coal, cooling water and greenhouse gas CO2 by circulating N2 or CO2 method based on 10 000 tons of rosin were decreased by 567.4-694.0 tons, 1.329×105-1.624×105 m3 and 2 080-2 545 tons, respectively. The production processes of separator for oil from water and filter for salts were not required. Water was not contaminated in products of rosin and turpentine. There was no emission of waste gas, waste water with turpentine and waste salts. The loss of turpentine and the emissions of waste salt were decreased by 13.52-29.72 tons and 60 tons annually. The obtained rosin and turpentine products met the national standard requirements.

Key words: pine gum, rosin, turpentine, N2/CO2, vapor-liquid equilibrium

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