Solubility Enhancing Composition
    1.
    发明申请

    公开(公告)号:US20220153601A1

    公开(公告)日:2022-05-19

    申请号:US17592198

    申请日:2022-02-03

    IPC分类号: C01C1/24 C02F5/08

    摘要: A solubility enhancing aqueous composition comprising a first solution comprising an anionic component comprising sulfate ions, alone or in combination with bisulfate ions, having a concentration from about 8.00 moles per liter to about 13.00 moles per liter of the first solution volume, and a cationic comprising ammonium ions having a concentration from about 1.45 moles per liter to about 2.01 moles per liter of the first solution volume, combined with a volume of water at least equal to the volume or weight of the first solution forming a second solution is provided. Variations of this general composition are also provided. The compositions are useful for enhancing solubility of a variety of molecules, typically metal ions.

    System and method for production of granular ammonium sulfate

    公开(公告)号:USRE48293E1

    公开(公告)日:2020-11-03

    申请号:US16198442

    申请日:2018-11-21

    申请人: PCI NITROGEN, LLC

    摘要: A system for the production of ammonium sulfate granules including a pipe cross reactor (PCR) configured to contact concentrated sulfuric acid with anhydrous ammonia to produce a PCR product comprising ammonium sulfate; and a granulator fluidly connected to the PCR, whereby PCR product extracted from the PCR can be introduced into the granulator, an inlet for ammonium sulfate seed material, an ammonia sparger configured to spray liquid anhydrous ammonia onto a bed of ammonium sulfate granules within the granulator, and a granulator product outlet configured for extraction of granulator product comprising ammonium sulfate granules from the granulator. A method of producing ammonium sulfate granules is also provided.

    Method for complex treatment of phosphogypsum

    公开(公告)号:US10370258B2

    公开(公告)日:2019-08-06

    申请号:US15574902

    申请日:2016-04-25

    申请人: FERIN SP. Z O.O.

    发明人: Wlodzimierz Merka

    摘要: A method for complex treatment of phosphogypsum comprising crushing of phosphogypsum and its washing with a solution of sulphuric acid, concentration 2-15%, and stirring at 50-80□ C., wherein the resultant mixture is separated into a liquid fraction and a sediment containing mostly calcium sulphate, which is characterized in that metals are precipitated from the liquid fraction, mainly lanthanides, phosphates and sulphates of metals soluble in diluted sulphuric acid, and the sediment containing mostly calcium sulphate is converted in the presence of ammonia liquor and carbon dioxide to ammonium sulphate and calcium carbonate, wherein filtered and dried sediment of calcium carbonate is dissolved in a 15-30% solution of nitric acid while stirring continuously, and then the resultant CO2 is recirculated and used in the conversion of the first phase of the sediment, and the resultant mixture is separated into a solution of calcium nitrate with dissolved metals and a sediment of fluorides and silicates with metal precipitate.

    Process for preparing crystalline ammonium sulfate product

    公开(公告)号:US09676633B2

    公开(公告)日:2017-06-13

    申请号:US14425419

    申请日:2013-09-12

    申请人: CAP III B.V.

    摘要: The invention relates to a process for preparing a crystalline ammonium sulfate product, which process comprises: a) subjecting in a crystallizer a feed solution of ammonium sulfate to crystallization to form a first slurry of ammonium sulfate crystals; b) subjecting the first slurry of ammonium sulfate crystals to a first size classification to yield a first coarse ammonium sulfate crystal fraction and a first fine ammonium sulfate crystal fraction; c) recycling at least part of the first fine ammonium sulfate crystal fraction to the feed solution of ammonium sulfate; and d) recovering a crystalline ammonium sulfate product from the first coarse ammonium sulfate crystal fraction, characterized in that: e) a second size classification is carried out on a second slurry of ammonium sulfate crystals to yield a second coarse ammonium sulfate crystal fraction and a second fine ammonium sulfate crystal fraction.

    PROCESS AND APPARATUS FOR PRODUCING AMMONIUM SULFATE CRYSTALS
    8.
    发明申请
    PROCESS AND APPARATUS FOR PRODUCING AMMONIUM SULFATE CRYSTALS 有权
    生产硫酸汞晶体的方法和装置

    公开(公告)号:US20160159657A1

    公开(公告)日:2016-06-09

    申请号:US14899579

    申请日:2014-06-20

    申请人: CAP III B.V.

    IPC分类号: C01C1/24 B01D9/00

    摘要: The present invention provides a continuous process for producing ammonium sulfate crystals, wherein said process comprises: (a) feeding to a first group of crystallization sections, which crystallization sections are heat integrated in series, a first aqueous ammonium sulfate solution that contains one or more impurities; (b) feeding to a second group of crystallization sections, which crystallization sections are heat integrated in series, a second aqueous ammonium sulfate solution that contains one or more impurities; (c) crystallizing ammonium sulfate crystals in each crystallization section respectively from each of said solutions of ammonium sulfate that contain one or more impurities; (d) purging a fraction of the ammonium sulfate solution that contains one or more impurities from each of said crystallization sections; and (e) discharging ammonium sulfate crystals from each crystallization section, characterized in that: (i) both the first group of crystallization sections and the second group of crystallization sections are together heat integrated in one series of crystallization sections; wherein the first group of crystallization sections operates at higher temperature than the second group of crystallization sections; and (ii) the composition of the first aqueous ammonium sulfate solution that contains one or more impurities is different to the composition of the second aqueous ammonium sulfate solution that contains one or more impurities. Further provided is apparatus suitable for producing ammonium sulfate crystals.

    摘要翻译: 本发明提供了一种用于生产硫酸铵晶体的连续方法,其中所述方法包括:(a)将第一组结晶部分进料到该第一组结晶部分,该结晶部分是串联的热积分法,第一组硫酸铵水溶液含有一种或多种 杂质; (b)将第二组结晶部分进料到该第二组结晶部分,该结晶部分串联加热一体化,含有一种或多种杂质的第二硫酸铵溶液; (c)分别从含有一种或多种杂质的所述硫酸铵溶液中分别在每个结晶段中结晶硫酸铵晶体; (d)从每个所述结晶部分清洗含有一种或多种杂质的硫酸铵溶液的一部分; 和(e)从每个结晶部分排出硫酸铵晶体,其特征在于:(i)第一组结晶部分和第二组结晶部分一起热集成在一系列结晶部分中; 其中所述第一组结晶段在比所述第二组结晶段更高的温度下操作; 和(ii)含有一种或多种杂质的第一硫酸铵水溶液的组成与含有一种或多种杂质的第二硫酸铵水溶液的组成不同。 还提供了适用于生产硫酸铵晶体的装置。

    PROCESS FOR INITIATING AN AMMONIUM SULFATE CRYSTALLIZATION PROCESS
    9.
    发明申请
    PROCESS FOR INITIATING AN AMMONIUM SULFATE CRYSTALLIZATION PROCESS 审中-公开
    开发硫酸铵结晶过程的方法

    公开(公告)号:US20150224421A1

    公开(公告)日:2015-08-13

    申请号:US14424639

    申请日:2013-08-28

    IPC分类号: B01D9/00 C01C1/248 C01C1/24

    摘要: A continuous process for producing crystal-line ammonium sulfate, said process comprising a start-up operation followed by a steady-state operation, wherein the start-up operation comprises: i) in a crystallizer, evaporating solvent from an approximately saturated ammonium sulfate solution; ii) replacing evaporated solvent with further approximately proximately saturated ammonium sulfate solution; iii) introducing to the crystallizer seed crystals of ammonium sulfate; iv) continuing to evaporate solvent, until a desired degree of supersaturation is reached; and v) recovering crystalline ammonium sulfate from ammonium sulfate solution in a recovery unit, and the steady-state operation comprises: vi) continuously feeding approximately saturated ammonium sulfate solution into the crystallizer and continuously withdrawing ammonium sulfate crystals from the crystallizer, such that the total combined volume of ammonium sulfate solution and ammonium sulfate crystals within the crystallizer remains constant; and vii) recovering crystalline ammonium sulfate from ammonium sulfate solution in a recovery unit, characterized in that the degree of supersaturation in the crystallizer during the start-up operation is maintained between 1.2% and the point at which primary nucleation occurs; and apparatus suitable for carrying out the process.

    摘要翻译: 一种用于生产结晶线型硫酸铵的连续方法,所述方法包括启动操作,随后进行稳态操作,其中启动操作包括:i)在结晶器中,从约饱和的硫酸铵溶液蒸发溶剂 ; ii)用另外的近似饱和的硫酸铵溶液代替蒸发的溶剂; iii)将结晶器引入硫酸铵晶种; iv)继续蒸发溶剂,直到达到所需的过饱和度; 和v)在回收单元中从硫酸铵溶液中回收结晶硫酸铵,并且稳态操作包括:vi)将大约饱和的硫酸铵溶液连续地进料到结晶器中并连续地从结晶器中取出硫酸铵晶体,使得总计 结晶器中硫酸铵溶液和硫酸铵晶体的组合体积保持不变; 和vii)在回收单元中从硫酸铵溶液中回收结晶硫酸铵,其特征在于,启动操作期间结晶器中的过饱和度保持在1.2%和初始成核出现点之间; 以及适于执行该过程的装置。