申请人:CATHAY R&D CENTER CO., LTD.
公开号:US20150368185A1
公开(公告)日:2015-12-24
One aspect of the invention relates to a method for the purification of cadaverine from an aqueous cadaverine composition comprising one or more involatile impurities, the method comprising obtaining cadaverine from evaporation or distillation of the aqueous cadaverine composition wherein one or more solvents are added to the evaporation/distillation system before the evaporation/distillation starts, during the evaporation/distillation and/or after the evaporation/distillation substantially stops when no more evaporation/distillation is observed; wherein the one or more solvents comprise at least one or more high boiling point (HBP) solvents. In certain embodiments, cadaverine may be evaporated/distilled at an unexpectedly lower heating temperature for an unexpectedly shorter heating time to provide a desired yield. Because cadaverine may decompose at high temperature, the unexpectedly lower heating temperature and unexpectedly shorter heating time decrease the undesired cadaverine decomposition. The methods disclosed herein provides unexpected high recovery rate (˜100%) in the evaporation/distillation of cadaverine at a larger scale at a lower heating temperature compared to conventional distillation methods. Thus, the method disclosed herein will be highly appreciated in the industrial production of cadaverine.
本发明的一个方面涉及从含有一种或多种不挥发杂质的水溶性腐胺组成物中纯化腐胺的方法,该方法包括从水溶性腐胺组成物的蒸发或蒸馏中获取腐胺,在蒸发/蒸馏开始之前、蒸发/蒸馏期间和/或蒸发/蒸馏基本停止时向蒸发/蒸馏系统中添加一个或多个溶剂,其中一个或多个溶剂包括至少一个或多个高沸点(HBP)溶剂。在某些实施例中,可以以意外较低的加热温度和意外较短的加热时间蒸发/蒸馏腐胺以提供所需的产量。由于腐胺可能在高温下分解,因此意外较低的加热温度和意外较短的加热时间减少了不必要的腐胺分解。本文所披露的方法在较大规模的腐胺蒸发/蒸馏中以较低的加热温度提供了意外的高回收率(约为100%),与传统蒸馏方法相比。因此,本文所披露的方法在腐胺的工业生产中将受到高度赞赏。