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    • 2. 发明申请
    • Method and apparatus for producing composite particles using supercritical fluid as plasticizing and extracting agent
    • 使用超临界流体作为增塑剂和提取剂生产复合颗粒的方法和装置
    • US20060076293A1
    • 2006-04-13
    • US10531008
    • 2004-02-18
    • Boris ShekunovPratibhash ChattopadhyayJeffrey Seitzinger
    • Boris ShekunovPratibhash ChattopadhyayJeffrey Seitzinger
    • B01D11/02
    • B01D11/0411B01D11/0203B01D11/0403
    • The present invention provides methods for producing composite particles using supercritical fluid as a plasticizing and extracting agent, composite particles formed in accordance with the methods and an apparatus for carrying out the methods. In accordance with the methods of the invention, a polymer, a wax and/or a lipid that is a solid at standard temperature and pressure is contacted with a supercritical fluid to form a melt, either before or after the polymer, wax and/or lipid has been contacted with a solution comprising a solute dissolved in a solvent. The supercritical fluid plasticizes the polymer, wax and/or lip and extracts the solvent from the solution, resulting in the formation of a two-fraction system including a first melt-rich fraction that includes the plasticized melt and fine particles of precipitated solute that are dispersed in the melt, and a second fraction that includes the supercritical fluid and the solvent. Expansion of the first fraction across a pressure drop results in the formation of composite particles that include the polymer, wax and/or lipid and the solute.
    • 本发明提供了使用超临界流体作为增塑萃取剂,根据所述方法形成的复合颗粒和用于实施所述方法的装置来生产复合颗粒的方法。 根据本发明的方法,在标准温度和压力下作为固体的聚合物,蜡和/或脂质与超临界流体接触以形成熔体,在聚合物之前或之后,蜡和/或 脂质已经与包含溶解在溶剂中的溶质的溶液接触。 超临界流体使聚合物,蜡和/或脂肪增塑,并从溶液中提取溶剂,从而形成包括第一富熔体部分的双组分体系,其包括增塑的熔体和沉淀的溶质的细颗粒, 分散在熔体中,第二部分包括超临界流体和溶剂。 通过压降的第一级分的膨胀导致形成包括聚合物,蜡和/或脂质和溶质的复合颗粒。
    • 7. 发明申请
    • Method And Apparatus For Producing Particles Via Supercritical Fluid Processing
    • 通过超临界流体处理生产颗粒的方法和装置
    • US20070158266A1
    • 2007-07-12
    • US11687266
    • 2007-03-16
    • Boris ShekunovPratibhash ChattopadhyayJeffrey Seitzinger
    • Boris ShekunovPratibhash ChattopadhyayJeffrey Seitzinger
    • B01D11/04
    • B01J2/04A61K9/1688B01D11/0411B01F7/008B01F7/00908B01F2003/0064
    • An apparatus and method for producing particles using supercritical fluid with enhanced mixing. The process includes a vessel having an inner surface defining a chamber. A high-speed shear or turbulent mixer is incorporated inside the vessel in order to create a region of enhanced mixing (mixing zone). A supercritical fluid pump communicates with the first inlet, and supplies supercritical fluid into the mixing zone through the first inlet. A solution pump communicates with the second inlet, and supplies solution into the mixing zone through the second inlet. A mixer assembly includes a motor drive and a rotor. The rotor is in the mixing zone and can mix the solution and the supercritical fluid. Particles are produced when the solution and the supercritical fluid are pumped into the mixing zone while the rotor is mixing. The design of the mixer and the direction of the flow of materials into the chamber creates a plug flow in the mixing zone. The plug flow allows the particles to be removed from the mixing zone as soon as they are precipitated. Because of the high intensity homogeneous mixing and plug flow configuration, the particle uniformity is enhanced and production of composite particles facilitated.
    • 一种使用超临界流体加强混合生产颗粒的装置和方法。 该方法包括具有限定室的内表面的容器。 将高速剪切或湍流混合器并入容器内,以产生增强混合区域(混合区)。 超临界流体泵与第一入口连通,并通过第一入口将超临界流体供应到混合区。 溶液泵与第二入口连通,并通过第二入口将溶液供入混合区。 混合器组件包括马达驱动器和转子。 转子处于混合区,可以混合溶液和超临界流体。 当溶液和超临界流体在转子混合时泵送到混合区域时产生颗粒。 混合器的设计和材料流入腔室的方向在混合区域中产生塞子流。 插塞流允许颗粒在沉淀时立即从混合区移除。 由于高强度均匀混合和活塞流动配置,颗粒均匀性得到提高,并且复合颗粒的生产有助于。