Integrated utilization of crude glycerol as a by-product of biodiesel production

doi:10.16085/j.issn.1000-6613.2017-0822

Abstract

Abstract: Biodiesel as a renewable energy sources and an alternative energy for the fossile fuel has been developed rapidly and achieved large-scale production.The production of biodiesel can also lead to the overproduction of glycerol.By several simple processes,crude glycerol can be obtained from biodiesel.In crude glycerol,there are many impurities in addition to glycerol.Glycerol is widely used in food industry,domestic industry,pharmaceutical industry.But it requires a high purity of glycerol.And the purification of crude glycerol is demanded.However,the purification process is complicated and has a higher cost and a lower economic feasibility.Therefore,extending the application space of glycerol and improving the additional value of glycerol is a necessary.In this paper,we studied the integrated utilization of crude glycerol and gave a brief introduction of the application technology of glycerol,such as the production of 1,2-propanediol,1,3-propanediol,DHA,PHA and acrolein,the production of hydrogen,the production of fuel additives,the production of fuel cell,the production of methanol or ethanol,and waste disposal.Through continuously extending the application prospects of glycerol,it can provide a technology support for the sustainable development of biodiesel production process.

Key words: biodiesel, crude glycerol, chemical product

摘要： 生物柴油作为一种可替代化石燃料的可再生能源，得到了快速发展和规模化生产，使得其副产物甘油的产量过剩。通过简单工艺过程处理生物柴油，即可得到粗甘油，而粗甘油中除甘油外，还有其他的杂质组分，要想将其应用于食品、化妆品及医药等行业就必须对粗甘油进行精制。而当前，粗甘油精制工艺路线较为繁琐，成本较高，经济可行性比较低，故需开发粗甘油的应用空间，提高粗甘油的附加值。本文从生物柴油副产物粗甘油的综合应用入手，从生产化工产品，如1，2-丙二醇、1，3-丙二醇、DHA、PHA、丙烯醛等，用于制氢，用于制燃料添加剂，用于燃料电池，制甲醇或乙醇以及废物处理等领域概述了当前粗甘油的应用技术工艺现状。通过不断拓展粗甘油的应用前景，为生物柴油技术工艺的可持续发展提供技术支撑。

关键词: 生物柴油, 粗甘油, 化工产品

CLC Number:

TQ923

SUN Qimei, WANG Chonghui, WANG Lingmin, ZHANG Lin, FAN Yachao. Integrated utilization of crude glycerol as a by-product of biodiesel production[J]. Chemical Industry and Engineering Progress, 2017, 36(S1): 161-166.

孙启梅, 王崇辉, 王领民, 张霖, 樊亚超. 生物柴油副产物粗甘油的综合利用[J]. 化工进展, 2017, 36(S1): 161-166.

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