公开(公告)号：US20080161601A1

公开(公告)日：2008-07-03

申请号：US12049994

申请日：2008-03-17

申请人： Avraham BANIEL ,  Asher Vitner ,  David Gonen ,  David Heidel

发明人： Avraham BANIEL ,  Asher Vitner ,  David Gonen ,  David Heidel

IPC分类号： C07C51/00

CPC分类号： C07C51/43 ,  C07C51/48 ,  C07C59/265

摘要： The invention provides a process for the recovery of citric acid from an aqueous solution feed stream originating in germination of carbohydrates and utilizing an amine solvent extraction step for separation of impurities comprising: subjecting said aqueous solution feed stream A to a treatment for partial recovery of citric acid, wherein said treatment is other than amine solvent extraction, to form a first portion of purified citric acid B and a secondary feed stream F; subjecting at least a portion G of said secondary feed stream F to a treatment consisting of amine solvent extraction to form a second portion of purified citric acid solution and to reject substantial of impurities initially present in said portion of said secondary feed stream; subjecting said second portion of purified citric acid solution to crystallization; and recycling mother liquor from said crystallization.

摘要翻译： 本发明提供了一种从源于碳水化合物发芽的水溶液进料流中回收柠檬酸的方法，并利用胺溶剂萃取步骤分离杂质，其包括：使所述水溶液进料流A处理部分回收柠檬酸 酸，其中所述处理不是胺溶剂萃取，以形成纯化柠檬酸B的第一部分和第二进料流F; 使至少一部分G的所述二次进料流F经受由胺溶剂萃取组成的处理以形成第二部分纯化的柠檬酸溶液并且排除最初存在于所述第二进料流的所述部分中的大量杂质; 对所述第二部分纯化柠檬酸溶液进行结晶; 并从所述结晶中回收母液。

公开(公告)号：US20100264372A1

公开(公告)日：2010-10-21

申请号：US12426308

申请日：2009-04-20

申请人： Avraham BANIEL ,  Robert Jansen

发明人： Avraham BANIEL ,  Robert Jansen

IPC分类号： C09K3/00 ,  C01B7/01

CPC分类号： C01B7/0706

摘要： A method for producing concentrated HCl vapor from an aqueous solution of HCl, including: (a) introducing an aqueous feed liquor to an evaporation chamber containing a mother liquor, the feed liquor having an initial, super-azeotropic HCl concentration; (b) directly contacting a liquor of these liquors with a heat-laden heat transfer fluid, to transfer heat from the fluid; (c) utilizing the heat to evaporate HCl, within the chamber, to produce the concentrated HCl vapor and to produce the mother liquor, the mother liquor including an aqueous phase having a reduced concentration of HCl, with respect to the initial HCl concentration; (d) subjecting the mother liquor to a liquid-liquid separation to produce a liquid phase containing HCl, and another liquid phase containing the heat transfer fluid in a heat-depleted state, with respect to the heat transfer fluid in step (b); (e) heating the heat transfer fluid in the heat-depleted state, to regenerate the heat-laden heat transfer fluid, and (f) returning this heat transfer fluid to step (b).

摘要翻译： 一种从HCl水溶液中生产浓HCl蒸气的方法，包括：（a）将含水原料液引入到含有母液的蒸发室中，该进料液体具有初始的超共沸HCl浓度; （b）将这些液体的液体与加热的传热流体直接接触，以从流体传递热量; （c）利用热量在室内蒸发HCl以产生浓缩的HCl蒸气并产生母液，该母液包含相对于初始HCl浓度具有降低的HCl浓度的水相; （d）相对于步骤（b）中的传热流体，使母液进行液液分离以产生含有HCl的液相和含有热耗尽状态的传热流体的另一液相; （e）加热处于耗热状态的传热流体，以再生载热的传热流体，和（f）将该传热流体返回到步骤（b）。