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公开(公告)号：US20220153601A1
公开(公告)日：2022-05-19
申请号：US17592198
申请日：2022-02-03
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.
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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
发明人： Praveen Jain , Santiago Gomez , Mark D. Ibsen
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.
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公开(公告)号：US10413864B2
公开(公告)日：2019-09-17
申请号：US16244562
申请日：2019-01-10
发明人： Jing Luo , Changxiang Xu
摘要： Methods, apparatus, and compositions for cleaning gas. The use of segmented multistage ammonia-based liquid spray with different oxidation potentials to remove sulfur compounds from gas. The use of different oxidation potentials may reduce unwanted ammonia slip.
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公开(公告)号：US10406477B2
公开(公告)日：2019-09-10
申请号：US16160035
申请日：2018-10-15
发明人： Jing Luo , Changxiang Xu
摘要： Methods, apparatus, and compositions for cleaning gas. The use of segmented multistage ammonia-based liquid spray with different oxidation potentials to remove sulfur compounds from gas. The use of different oxidation potentials may reduce unwanted ammonia slip.
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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
IPC分类号： C01F11/46 , C01B32/50 , C05C5/04 , C01F11/18 , C05D3/02 , C05D9/00 , C01B25/32 , C01B7/19 , C01C1/24 , C01F11/38
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.
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公开(公告)号：US20190143267A1
公开(公告)日：2019-05-16
申请号：US15811076
申请日：2017-11-13
发明人： Kai Huang , Marilyn Wang , Xingping Wang , Hailin Liu , Wesley Nie , Jack Yu
摘要： Compositions for removing air pollutants from the air are provided. These compositions can be sprayed on a variety of surfaces to remove air pollutants such as volatile organic compounds (VOCs) from the environment, and are suitable for use in human dwellings.
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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.
CPC分类号： C01C1/248 , B01D9/0031 , B01D9/0036 , B01D9/0063 , C01C1/24 , C05C3/005
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.
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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.
CPC分类号： C01C1/24 , B01D9/0022 , B01D9/0031 , B01D9/004 , B01D9/0063 , B01D2009/0086 , C01C1/248 , C07C249/08 , C07C2601/14 , C07D201/04 , C07D201/16 , C07C251/44
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。
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公开(公告)号：US20150224421A1
公开(公告)日：2015-08-13
申请号：US14424639
申请日：2013-08-28
申请人： DSM IP ASSETS B.V.
CPC分类号： B01D9/0018 , B01D9/0031 , B01D9/0036 , B01D2009/0086 , C01C1/24 , C01C1/248 , C01P2004/60 , C05C3/00
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。
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10.发明授权公开(公告)号：US08758719B2
公开(公告)日：2014-06-24
申请号：US13963072
申请日：2013-08-09
发明人： Murray P. Hasinoff , Taylor Pursell , Joseph A. Saiia , Arthur R. Shirley, Jr. , Keith D. Cochran , Timothy G. Holt
CPC分类号： C22B26/20 , C01C1/24 , C01C1/244 , C01F11/18 , C01F11/468 , C01P2004/03 , C01P2004/38 , C01P2004/50 , C01P2004/61 , C01P2004/62
摘要： A continuous countercurrent flow process for converting FGD gypsum to ammonium sulfate and calcium carbonate including countercurrent flows with internal recycle of liquids to maximize the purity of reaction products while minimizing reaction times, and further include embodiments of the process that provide a yield of both ammonium sulfate and calcium carbonate to be 97 to 100%, and embodiments that provide for processes having a total time of reaction being 8 to 12 minutes, the invention further including processes for removing contaminants from the FGD gypsum employing an acid rinse process and/or a slurry tank reactor process.
摘要翻译： 用于将FGD石膏转化为硫酸铵和碳酸钙的连续逆流流程，包括具有内部循环液体的逆流流动，以使反应产物的纯度最大化，同时使反应时间最小化，并且还包括提供硫酸铵的产率的实施方案 和碳酸钙为97〜100％，提供反应总时间为8〜12分钟的方法的实施方案，本发明还包括使用酸洗法和/或浆料从FGD石膏中除去污染物的方法 坦克反应器工艺。
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