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在对制乳技术进行充分调研的基础上 ,选择水 -正丁醇和水 -煤油为实验体系 ,以十二烷基磺酸钠、Span85等表面活性剂为乳化剂。在 0 .2 μm的陶瓷膜中研究了压力、连续相流量等因素对乳液粒径大小、分布和分散相通量的影响。实验结果表明 ,用微孔膜可以制得分布均匀的乳状液。乳化剂的类型与用量对乳液的性质有显著影响。微孔膜对低界面张力及界面张力中等的体系可制得粒径小、分布窄的O/W乳液。连续相流量和膜两侧压差对于乳液粒径和粒径分布没有明显的影响 ;分散相通量随压差的增大而明显增大 ,但连续相流速对分散相通量影响不大。
Based on the full investigation of milkmaking technology, water-n-butanol and water-kerosene were selected as the experimental system and surfactants such as sodium dodecyl sulfate and Span85 were used as emulsifiers. The effects of pressure, continuous phase flow and other factors on the size, distribution and dispersion flux of the emulsion were investigated in a 0.2 μm ceramic membrane. The experimental results show that the microporous membrane can be prepared uniformly distributed emulsion. The type and amount of emulsifier have a significant effect on the properties of the emulsion. Microporous film for the low interfacial tension and interfacial tension moderate system can be made of small size, narrow distribution of O / W emulsion. The flow rate of continuous phase and the pressure difference on both sides of the membrane had no significant effect on the particle size and particle size distribution of the emulsion. The flux of the dispersed phase increased obviously with the increase of the pressure drop, but the flow rate of the continuous phase had little effect on the flux of the dispersed phase.