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    ACID-SALT METATHETIC PROCESS
    3.
    发明公开
    ACID-SALT METATHETIC PROCESS 失效
    酸盐METATHETISCHER过程

    公开(公告)号：EP0863865A1

    公开(公告)日：1998-09-16

    申请号：EP96929508.0

    申请日：1996-09-09

    申请人： YISSUM RESEARCH DEVELOPMENT COMPANY OF THE HEBREW UNIVERSITY OF JERUSALEM

    IPC分类号： C01B7 ,  C01D9 ,  C07C51

    CPC分类号： C07C51/02 ,  C01B7/035 ,  C01B7/0737 ,  C01D9/04 ,  C07C51/48

    摘要： A cation exchange membrane mediated acid-salt metathetic process. An aqueous salt solution is placed into a first compartment on one side of the membrane together with an organic amine extractant of limited water miscibility, and an aqueous acid solution is placed into a second compartment on the other side of the membrane. Product acid forms in the first compartment and collects in the organic amine extractant from where it is recovered. The process is particularly suitable for the recovery of a carboxylic acid from its salt.

    Crystallization apparatus
    7.
    发明公开
    Crystallization apparatus 有权
    Kristallisationsvorrichtung

    公开(公告)号：EP2505243A1

    公开(公告)日：2012-10-03

    申请号：EP12162017.3

    申请日：2012-03-29

    申请人： Haifa Chemicals Ltd

    发明人： Mizrahi, Yosef

    IPC分类号： B01D9/00

    CPC分类号： C01D9/04 ,  B01D9/0022 ,  B01D9/0031

    摘要： A reaction-crystallization apparatus for carrying out reaction and/or solvent extraction and/or crystallization of soluble salts. The apparatus comprises an upper section having a top and a decanter. The decanter comprises: a vertical vessel having a horizontal weir at the top of the upper section. The top of the upper section has an outlet for removing a light phase at the top of the decanter. The apparatus further comprises a lower section, including a crystallizer. The crystallizer includes: a coaxial draft tube; at least one feed pipe; an agitator located inside the draft tube; and at least one outlet at the bottom for crystal slurry removal. The apparatus further comprises an intermediate section sandwiched between the lower section and the upper section such that the sections are in fluid communication. The intermediate section includes at least one coaxial vertical baffle, there being a gap between the draft tube and the coaxial vertical baffle, where in use, the gap is adjustable by moving the vertical baffle up or down.

    摘要翻译： 用于进行可溶性盐的反应和/或溶剂萃取和/或结晶的反应结晶装置。 该装置包括具有顶部和滗析器的上部部分。 滗水器包括：在上部顶部具有水平堰的垂直船。 上部的顶部具有用于去除滗析器顶部的轻质相的出口。 该装置还包括下部，包括结晶器。 结晶器包括：同轴引流管; 至少一个进料管; 位于引流管内部的搅拌器; 和底部的至少一个出口，用于除去晶体浆料。 所述装置还包括夹在所述下部和所述上部之间的中间部分，使得所述部分处于流体连通状态。 中间部分包括至少一个同轴垂直挡板，在引流管和同轴垂直挡板之间存在间隙，在使用中，通过向上或向下移动垂直挡板可以调节间隙。

    POLYHALITE IMI PROCESS FOR KNO3 PRODUCTION
    8.
    发明公开
    POLYHALITE IMI PROCESS FOR KNO3 PRODUCTION 审中-公开
    POLYHALIT-IMI-VERFAHREN ZUR KNO3-HERSTELLUNG

    公开(公告)号：EP2477946A2

    公开(公告)日：2012-07-25

    申请号：EP10791742.9

    申请日：2010-06-27

    申请人： IMI Tami Institute For Research And Development Ltd.

    发明人： BONAN, Michael ,  GINZBERG, Eyal ,  MOZES, Akiva ,  BARNEA, Eyal ,  KESELMAN, Hugo ,  FRIEDMAN, Gideon ,  FRIM, Ron ,  LANGEVELD, Cornelis Petrus

    IPC分类号： C01D9/04

    CPC分类号： C01D9/04 ,  C01D3/04 ,  C01F5/14 ,  C01F5/22 ,  C01F11/46 ,  C05C5/02 ,  C22B3/065 ,  C22B3/44 ,  C22B26/10 ,  Y02P10/234

    摘要： A process for producing KNO3 from polyhalite is disclosed. In a preferred embodiment, the process comprises steps of (a) contacting polyhalite with HNO3; (b) adding Ca(OH)2 to the solution, thereby precipitating as CaSO4 at least part of the sulfate present in said solution; (c) precipitating as Mg(OH)2 at least part of the Mg2+ remaining in said solution by further addition of Ca(OH)2 to the remaining solution; (d) concentrating the solution, thereby precipitating as a sulfate compound at least part of the sulfate remaining in solution; (e) separating at least part of the NaCl from the solution remaining; and (f) crystallizing as solid KNO3 at least part of the K+ and NO3- contained in the solution. The process enables direct conversion of polyhalite to KNO3 of purity exceeding 98.5% and that is essentially free of magnesium and sulfate impurities.

    摘要翻译： 公开了从多卤化物生产KNO 3的方法。 在一个优选的实施方案中，该方法包括以下步骤：（a）使多卤盐与HNO 3接触; （b）向溶液中加入Ca（OH）2，从而以CaSO 4沉淀所述溶液中存在的至少一部分硫酸盐; （c）通过进一步向剩余溶液中加入Ca（OH）2，使Mg（OH）2至少残留在所述溶液中的部分Mg 2+沉淀; （d）浓缩溶液，从而以至少一部分残留在溶液中的硫酸盐化合物沉淀; （e）从残留的溶液中分离出至少部分NaCl; 和（f）作为固体KNO 3析出溶液中所含的K +和NO 3的至少一部分。 该方法能够将多卤化物直接转化为纯度超过98.5％的KNO 3，并且基本上不含镁和硫酸盐杂质。