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1. 发明授权

US4787979A Liquid-liquid extraction process 失效
标题翻译：液 - 液萃取过程
公开(公告)号：US4787979A
公开(公告)日：1988-11-29
申请号：US942401
申请日：1986-12-16
申请人： Zdenek Kolarik , Ulrich Galla , Klaus Roth
发明人： Zdenek Kolarik , Ulrich Galla , Klaus Roth
IPC分类号： B01D11/04 , G21C19/46
CPC分类号： B01D11/0492 , G21C19/46 , Y02W30/883
摘要： A liquid-liquid two-phase extraction process in which a feed solution is introduced into an intermediate stage of a multistage extraction apparatus. The solution is water and one or more valuable material to be recovered by extraction. An organic extractant is introduced into one end of the apparatus. The extractant is a solvent and flows through the apparatus. The valuable material is extracted from the feed solution to provide a charged organic phase. An aqueous extractant having water is introduced into another end of the apparatus to wash the charged organic phase. The aqueous extractant flows through the multistate extraction apparatus countercurrent to the extractant and contributes to the aqueous phase. The organic extractant is divided into at least two streams prior to introducing the organic extractant into the apparatus. Each stream is introduced into the apparatus at different stages, both ahead of the intermediate stage.
摘要翻译：一种液 - 液两相萃取方法，其中将进料溶液引入多级萃取装置的中间级。溶液是水和通过萃取回收的一种或多种有价值的材料。将有机萃取剂引入装置的一端。萃取剂是溶剂并流过该装置。从进料溶液中提取有价值的材料以提供带电的有机相。将具有水的水性萃取剂引入装置的另一端以洗涤带电的有机相。水提取剂通过多提取提取装置与萃取剂逆流流动并有助于水相。在将有机萃取剂引入装置之前，将有机萃取剂分成至少两股。每个流在不同的阶段被引入到装置中，都在中间阶段之前。

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