化工进展 ›› 2017, Vol. 36 ›› Issue (S1): 155-160.DOI: 10.16085/j.issn.1000-6613.2017-0526

• 能源加工与技术 • 上一篇    下一篇

生物柴油副产物甘油的分离提纯工艺进展

孙启梅, 张霖, 王领民, 王崇辉   

  1. 中国石油化工股份有限公司抚顺石油化工研究院, 辽宁 抚顺 113001
  • 收稿日期:2017-03-24 修回日期:2017-06-08 出版日期:2017-12-31 发布日期:2017-12-13
  • 通讯作者: 孙启梅(1987-),女,硕士,工程师,从事生物化工研究。
  • 作者简介:孙启梅(1987-),女,硕士,工程师,从事生物化工研究。E-mail:sunqimei.fshy@sinopec.com。

Development and progress of separation and purification technology of glycerol as a by-product of biodiesel

SUN Qimei, ZHANG Lin, WANG Lingmin, WANG Chonghui   

  1. Fushun Research Institute of Petroleum and Petrochemicals, SINOPEC, Fushun 113001, Liaoning, China
  • Received:2017-03-24 Revised:2017-06-08 Online:2017-12-31 Published:2017-12-13

摘要: 生物柴油产业的快速发展,使得副产物甘油的产量激增,而当前食品、化妆品、医药等行业对甘油都有着广泛的需求,但它们对甘油的纯度要求很较高。这就需要对生物柴油副产物甘油进行精制提纯。通常经酯交换反应得到的生物柴油,通过简单的离心或沉降过程即可得到粗甘油,其中含有催化剂、色素、盐、皂、脂肪酸等杂质,再加上甘油本身黏度大、沸点高,且是热敏性的物质,使得其分离精制过程变得很困难。本文介绍了现有文献中报道的从生物柴油中提纯精制甘油的各种工艺,主要有絮凝、乙醇结晶、草酸钠络合、离子交换、膜分离、减压蒸馏或分子蒸馏、生物吸附和反应络合等精制提纯工艺。并提出将两种或多种精制提纯技术相结合,将会是一种高效的甘油精制方案。

关键词: 生物柴油, 甘油, 提纯

Abstract: As the rapid development of biodiesel industry,the output of its by-product glycerol has increased sharply.High purity of glycerol has a great demand for food industry,domestic industry and pharmaceutical industry.This need a refine process to purify glycerol as a by-product of biodiesel.Usually,biodiesel after transesterification process can be centrifuged or settled to obtain unrefined glycerol.It consists of glycerol and the other impurities,such as the catalyst,coloring matters,salts,soaps,fatty acid.Moreover,glycerol has a larger viscosity and a higher boiling point,and it is also a heat-sensitive matter.All those made it difficult to separate and purify glycerol.In this paper,we give a brief introduction of a variety of glycerol purification process that has been reported in the literature,including flocculation,ethanol recrystallization,Sodium oxalate complex,ion exchange,membrane separation,reduced pressure distillation or molecular distillation,biosorption,reaction complex,and so on.Integrating one purification process with two or more processes will be a efficient project for purifying glycerol from biodiesel.

Key words: biodiesel, glycerol, purification

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