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公开(公告)号：EP1407805A1
公开(公告)日：2004-04-14
申请号：EP02078710.7
申请日：2002-09-10
IPC分类号： B01D9/02
CPC分类号： B01D9/0013 , B01D9/0059
摘要： The invention relates to a crystallization method for forming crystals of a substance in a solution, a suspension, or a mixture of liquids, in particular ice crystals from an aqueous solution or organic crystals from an organic melt. The method comprises the steps of crystallizing the solution to form a crystal slurry by means of cooling in a heat exchanger and feeding the crystal slurry from an outflow side of the heat exchanger to an inflow side of the heat exchanger via a recirculation duct and separating at least a part of the crystals from the liquid. A recirculation pump is included in the recirculation duct wherein the slurry is continuously supplied through the recirculation duct such that the crystals are homogeneously distributed in the duct and the heat exchanger and such that the under cooling at the outlet of the heat exchanger is the equilibrium temperature T eq minus 0.5 to 0.9 times the meta-stable region ΔT max .
摘要翻译： 用于在溶液，悬浮液或液体混合物中形成晶体的结晶方法，特别是来自有机熔体的水溶液或有机晶体的冰晶，包括将再循环泵包括在再循环管道中，其中晶体浆料 通过管道连续供应，使得晶体均匀分布在管道和热交换器中。 用于在溶液，悬浮液或液体混合物中形成晶体的结晶方法，特别是来自水溶液的冰晶体或来自有机熔体的有机晶体的结晶方法包括使溶液结晶以通过在 热交换器; 将所述晶体浆料从所述热交换器的流出侧经由再循环管道供给到所述热交换器的流入侧; 并将一部分晶体与液体分离。 再循环泵（6）包括在再循环管道中，其中浆料通过再循环管道连续供应，使得晶体均匀分布在管道和热交换器中，并且使得在出口（4）处的冷却 热交换器是平衡温度（Teq）减去元稳定区域的0.5-0.9倍（ΔTmax）。 还包括用于结晶器组件的独立权利要求，其包括具有入口（3）和用于形成晶体浆料的出口的热交换器; 连接在入口和出口之间用于再循环晶体浆料并在热交换器中从出口到入口形成的再循环管道（5） 和连接到热交换器上以从浆料中分离晶体的分离器（8）。 在热交换器的出口和入口之间的再循环路径中不包括过滤器或分离器。
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公开(公告)号：EP1407805B1
公开(公告)日：2005-05-11
申请号：EP02078710.7
申请日：2002-09-10
IPC分类号： B01D9/02
CPC分类号： B01D9/0013 , B01D9/0059
摘要： A crystallization method for forming crystals of a substance in a solution, a suspension, or a mixture of liquids, in particular ice crystals from an aqueous solution or organic crystals from an organic melt, involves including a recirculation pump in a recirculation duct where crystal slurry is continuously supplied through the duct, such that crystals are homogeneously distributed in the duct and a heat exchanger. A crystallization method for forming crystals of a substance in a solution, a suspension, or a mixture of liquids, in particular ice crystals from an aqueous solution or organic crystals from an organic melt, comprises crystallizing the solution to form crystal slurry by cooling in a heat exchanger; feeding the crystal slurry from an outflow side of the heat exchanger to an inflow side of the heat exchanger via a recirculation duct; and separating a part of the crystals from the liquid. A recirculation pump (6) is included in the recirculation duct where the slurry is continuously supplied through the recirculation duct, such that the crystals are homogeneously distributed in the duct and the heat exchanger and such that the under cooling at an outlet (4) of the heat exchanger is an equilibrium temperature (Teq) minus 0.5-0.9 times a meta-stable region (delta Tmax). An independent claim is also included for a crystallizer assembly, comprising a heat exchanger having an inlet (3) and an outlet for forming crystal slurry; a recirculation duct (5) connected between the inlet and the outlet for recirculation of the crystal slurry, and formed in the heat exchanger from the outlet to the inlet; and a separator (8) connected to the heat exchanger for separating crystals from the slurry. No filter or separator is included in a recirculation path between the outlet and the inlet of the heat exchanger.
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