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Continuous Industrial-Scale Centrifugal Partition Chromatography with Automatic Solvent System Handling: Concept and Instrumentation
Organic Process Research & Development ( IF 3.1 ) Pub Date : 2020-11-06 , DOI: 10.1021/acs.oprd.0c00338
László Lorántfy 1 , Dóra Rutterschmid 1 , Róbert Örkényi 1 , Dávid Bakonyi 1 , József Faragó 1 , Gergő Dargó 1 , Árpád Könczöl 1
Affiliation  

Centrifugal partition chromatography (CPC) is an emerging separation technology in pharmaceutical and natural product purifications, reaching recently industrial-scale solutions. Because both the stationary and mobile phases are liquids in CPC, the solvent consumption of such separation processes is considered significant. Thus, automation is highly required in the preparation and recycling of the solvent mixtures for economical (i.e., continuous) CPC operation. Here, we report a feasible solution for this industrial issue, including the concept, algorithm, and instrumentation of solvent system handling. For majority of ternary solvent systems used in CPC separations, the linear correlation between the density and composition of the phases was recognized and utilized during the continuous solvent recycling. Hence, an efficient density-based composition adjustment algorithm was established in a mixer-settler unit using Coriolis flow meters for precise density monitoring of the upper and lower phases of the biphasic liquid system (BLS). In addition, a complete cascade consisting of a buffer, waste, a recycler (evaporator), and mixer-settler units was designed around the industrial-scale CPC device. The proof of concept was demonstrated by sequential industrial-scale CPC separations of a binary model mixture in the n-hexane/methanol/water (5/4/1, v/v/v) solvent system, followed by the purification of a crude steroid active pharmaceutical ingredient performed in the methyl isobutyl ketone/acetone/water (2/2/1, v/v/v) solvent system. The reproducibility of chromatographic performance and the productivity of the mixer-settler and evaporator units were satisfactory, enabling a robust and continuous operation of the developed separation process.

中文翻译:

具有自动溶剂系统处理功能的连续工业规模离心分配色谱:概念和仪器

离心分配色谱(CPC)是制药和天然产品纯化中的一种新兴分离技术,目前已达到工业规模的解决方案。由于CPC中的固定相和流动相都是液体,因此认为此类分离过程的溶剂消耗量很大。因此,在制备和循环使用溶剂混合物以实现经济(即,连续)CPC操作时,高度需要自动化。在这里,我们报告了针对这一工业问题的可行解决方案,包括溶剂系统处理的概念,算法和仪器。对于CPC分离中使用的大多数三元溶剂系统,在连续的溶剂循环过程中,相的密度和组成之间的线性相关性得到了认可和利用。因此,在混合沉降器单元中使用科里奥利流量计建立了一种基于密度的有效成分调节算法,用于精确监控双相液体系统(BLS)的上,下两相。此外,围绕工业规模的CPC设备设计了由缓冲液,废物,回收器(蒸发器)和混合沉降器单元组成的完整级联。通过对工业模型中的二元模型混合物进行顺序工业规模CPC分离来证明概念验证。混合沉降器单元是围绕工业规模的CPC设备设计的。通过对工业模型中的二元模型混合物进行连续的工业规模CPC分离来证明概念验证。混合沉降器单元是围绕工业规模的CPC设备设计的。通过对工业模型中的二元模型混合物进行连续的工业规模CPC分离来证明概念验证。Ñ己烷/甲醇/水(5/4/1,V / V / V)溶剂系统中,随后是粗的纯化类固醇的活性药物成分在甲基执行丁基酮/丙酮/水(2/2 / 1,v / v / v)溶剂系统。色谱性能的可重复性以及混合沉降器和蒸发器单元的生产率令人满意,从而使所开发的分离过程能够稳定,连续地运行。
更新日期:2020-11-21
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