水力空化强化制备生物柴油过程的研究  

Intensification of Liquid-liquid Heterogeneous Micromixing for Preparing Biodiesel by Hydrodynamic Cavitation

作　　者：何相君[1] 聂勇[1] 陆向红[1] 计建炳[1] 

机构地区：[1]浙江工业大学化学工程与材料学院,杭州310014

出　　处：《精细石油化工进展》2011年第5期47-51,共5页Advances in Fine Petrochemicals

基　　金：浙江省科技计划重大招标项目(2006C11015)

摘　　要：生物柴油生产过程中需要解决的一个关键技术问题是油相与醇相的非均相混合,即传质对反应的影响显著。本研究利用水力空化技术进行液-液非均相微观混合,考察了温度、空化元件入口压力、空化器结构以及不同两相体系(油/甲醇体系和油/水体系)对混合液-液滴粒径的影响,并与传统机械搅拌进行了比较。结果表明,在水力空化作用下混合油/甲醇体系,可制得液滴粒径在150～400 nm的混合液,明显小于通过传统机械搅拌得到的液滴粒径。The heterogeneous mixing of oil -phase and alcohol -phase is one of the key technical problems which needs to be resolved in production process of biodiesel,which means the effect of mass transfer on reaction is remarkable. Liquid - liquid heterogeneous micromixing was carried out by hydrodynamic cavitation. The effects of temperature, inlet pressure of cavitation component, the structure of cavitation instrument, and different two - phase systems （ oil/methanol and oil/water） on the drop size of the mixture were investigated. And the mixing efficiency using hydrodynamic cavitation was compared with that using mechanical agitation. The results showed that oil/methanol mixture with 150 -400 nm drop size could be prepared by hydrodynamic cavitation micromixing and the drop size was significantly smaller than that prepared from traditional mechanical mixing.

关 键 词：水力空化 微观混合 非均相混合 生物柴油 强化传质 

分 类 号：TE667[石油与天然气工程—油气加工工程]