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1. 发明授权

US4332592A Process for continuous crystallization 失效
公开(公告)号：US4332592A
公开(公告)日：1982-06-01
申请号：US37321
申请日：1979-05-08
申请人： Tore B. Muller
发明人： Tore B. Muller
IPC分类号： B01D9/00 , C01F7/14 , B01D9/02
CPC分类号： C01F7/147 , B01D9/0036 , C01F7/144 , C01P2004/61 , C01P2006/12 , Y10S159/38
摘要： A process for the continuous crystallization of at least one crystallizable material from a solution wherein a series of crystallization stages are utilized, with partial crystallization taking place in each stage. The process includes the classification of partially crystallized suspension between each stage, and the suspension from the final stage is passed to a separator wherein it is separated into a concentrated suspension containing crystals and a spent liquor, the concentrated suspension being returned to the final stage and the spent liquor being discharged. Product crystals are taken from the first stage of the series. Partially grown crystals are circulated between consecutive crystallization stages in the series such that a stream of partially crystallized suspension, after being classified to separate the coarse fraction, is passed from one stage to the next stage in the series; whereas a stream of return suspension is passed in countercurrent fashion from the next stage to the preceding one stage without classification. Coarse crystals are taken from the first stage through an elutriation column (hydraulic classification tube) in countercurrent flow to the incoming feed.

2. 发明授权

US4336030A Process for continuous crystallization 失效
标题翻译：连续结晶方法
公开(公告)号：US4336030A
公开(公告)日：1982-06-22
申请号：US37305
申请日：1979-05-08
申请人： Tore B. Muller
发明人： Tore B. Muller
IPC分类号： B01D9/00 , C01F7/14 , B01D9/02
CPC分类号： C01F7/147 , B01D9/0036 , C01F7/144 , C01P2004/61 , C01P2006/12 , Y10S159/38
摘要： A process for the continuous crystallization of at least one crystallizable material from a solution wherein a series of crystallization stages are utilized, with partial crystallization taking place in each stage. The process includes the classification of partially crystallized suspension between each stage, and the suspension from the final stage is passed to a separator wherein it is separated into a concentrated suspension containing crystals and a spent liquor, the concentrated suspension being returned to the final stage and the spent liquor being discharged. Product crystals are taken from the first stage of the series. Partially grown crystals are circulated between consecutive crystallization stages in the series such that a stream of partially crystallized suspension, after being classified to separate the coarse fraction, is passed from one stage to the next stage in the series; whereas a stream of return suspension is passed in countercurrent fashion from the next stage to the preceding one stage without classification. Coarse crystals are taken from the first stage through an elutriation column (hydraulic classification tube) in countercurrent flow to the incoming feed.
摘要翻译：从使用一系列结晶阶段的溶液中连续结晶至少一种可结晶材料的方法，在每个阶段发生部分结晶。该方法包括在每个阶段之间对部分结晶的悬浮液进行分级，并将来自最终阶段的悬浮液分离到分离器中，其中将其分离成含有晶体和废液的浓缩悬浮液，浓缩悬浮液返回到最后阶段，废液排出。产品晶体取自该系列的第一阶段。部分生长的晶体在系列的连续结晶阶段之间循环，使得部分结晶的悬浮液流被分类以分离粗级分后，从一个阶段传递到下一个阶段; 而回流悬浮液从下一阶段到前一阶段以逆流方式通过，无需分类。将粗晶体从第一阶段通过淘汰柱（液压分级管）以逆流流向进料进料。

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