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在配置喷嘴雾化器的低速喷雾塔中空气-液滴接触的强化
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作者 J.Leong S.Mansouri +3 位作者 M.W.Woo x.d.chen 宋文瀚译 吴中华校 《干燥技术与设备》 CAS 2013年第3期19-29,共11页
环形空气进口能够显著强化低速喷雾干燥器的干燥阶段。更精确一点,加入环形喷射进口能够延长有效干燥时间,但不能提高干燥速度。计算流体动力学分析进一步表明这是因为同轴环形被加热射流内部的"弯曲",导致在喷嘴雾化器下部... 环形空气进口能够显著强化低速喷雾干燥器的干燥阶段。更精确一点,加入环形喷射进口能够延长有效干燥时间,但不能提高干燥速度。计算流体动力学分析进一步表明这是因为同轴环形被加热射流内部的"弯曲",导致在喷嘴雾化器下部区域产生明显的穿流和逆流。对大液滴干燥这种改善更加明显。以此构想为基础,在莫纳什大学开发了一种空气室原型,使得同轴环形射流用于低速喷雾塔中。此样机成功将酪蛋白、脱脂牛奶和乳糖溶液喷雾干燥成自由流动粉体。 展开更多
关键词 喷雾干燥 强化 环形射流 低速 计算流体力学
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On the spray drying of uniform functional microparticles 被引量:8
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作者 W.Liu x.d.chen C.Selomulya 《Particuology》 SCIE EI CAS CSCD 2015年第5期1-12,共12页
Spray drying is a typical method to produce particles in dry powder forms at industrial scale. Most spray-dried products often show a wide range of particle properties even within the same batch. At Monash University,... Spray drying is a typical method to produce particles in dry powder forms at industrial scale. Most spray-dried products often show a wide range of particle properties even within the same batch. At Monash University, we utilise a microfluidic spray drying approach to generate uniform microparticles with tightly controlled characteristics and sizes in a scalable, almost waste-flee process. The technique is useful to correlate the effects of formulation and spray drying conditions on the properties of spray-dried particles, and can be used to test new formulations for targeted applications such as encapsulation and release of active ingredients. The synthesis route can be applied to other self-assembling systems, includ- ing mesoporous, crystalline, and hierarchically structured microparticles. As spray drying is commonly used in commercial scales, the understanding of how functional particles are formed in relation to formulations and process conditions could assist in developing a cost effective, energy and material-efficient route to produce powders with better properties and ease of handling for more advanced applications such as selective adsorption and bio-separation. 展开更多
关键词 Microfluidic spray drying Uniform microparticles ENCAPSULATION Controlled release
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