公开(公告)号：WO2021254944A1

公开(公告)日：2021-12-23

申请号：PCT/EP2021/065923

申请日：2021-06-14

Applicant: PRAYON

Inventor： SONVEAUX, Marc ,  HUEBER, Damien

IPC: B01D61/02 ,  C01B25/234 ,  B01D2311/25 ,  B01D2317/022 ,  B01D2317/025 ,  B01D2317/06 ,  B01D61/022 ,  B01D61/027

Abstract: The present invention concerns a process and an apparatus for purifying a phosphate containing acidic solution comprising impurities through a nanofiltration station comprising a number of nanofiltration membrane units, each comprising a retentate side and a permeate side separated by a membrane, the process comprising feeding the phosphate containing acidic solution through an entry line to a first membrane unit of n 2: 1 membrane units arranged in series, wherein a nth permeate flowing out of the nth membrane unit forms a nanofiltered phosphate solution. The gist of the present invention is the provision of at least one permeate recirculation loop, branching off the retentate side of the first membrane unit and closing the loop at the entry line to combine at least one of three permeates with the phosphate containing acidic solution.

公开(公告)号：WO2019013570A2

公开(公告)日：2019-01-17

申请号：PCT/KR2018/007915

申请日：2018-07-12

Applicant: 씨제이제일제당 (주)

Inventor： 김준우 ,  김재익 ,  김일출 ,  이인성 ,  강승훈 ,  김민섭 ,  이강훈 ,  이승제 ,  이충권 ,  정준영

IPC: C12P3/00 ,  C01B25/234 ,  C12N9/10

Abstract: 본원은 발효액 또는 이의 폐액으로부터 인산을 회수하는 방법 및 회수한 인산을 발효에 재사용하는 공정에 대한 것이다.

公开(公告)号：WO2015165481A1

公开(公告)日：2015-11-05

申请号：PCT/EP2014/001360

申请日：2014-05-20

Applicant: REMONDIS AQUA GMBH & CO. KG

Inventor： LEHMKUHL, Josef ,  LEBEK, Martin

IPC: C01B25/234 ,  C05B1/04

CPC classification number: C01B25/234 ,  C01B25/324 ,  C01F11/46 ,  C01P2006/80 ,  C02F1/42 ,  C02F1/5245 ,  C02F3/305 ,  C02F2001/425 ,  C02F2101/105 ,  C02F2303/16 ,  C05B1/04 ,  C05B17/00

Abstract: Die vorliegende Erfindung betrifft ein Verfahren zur Reinigung von Roh-Phosphorsäure durch Zugabe von Aschen aus Abfall-Verbrennungsanlagen, sowie Kalziumhydroxid und mindestens einem Sulfid, sowie einem nasschemischen Aufschluss zur Gewinnung (Erzeugung) von Kalziumsulfat, reiner Phosphorsäure, Metallsalz-Lösung und/oder Kalziumhydrogenphosphaten (z.B. Triplesuperphosphat).

Abstract translation: 本发明涉及用于粗磷酸的加入灰从废物焚烧厂，以及氢氧化钙和至少一种硫化物以及湿化学制浆为硫酸钙，纯磷酸，金属盐溶液和/或磷酸氢钙的生产（制造）的纯化方法 （例如，三元过磷酸钙）。

公开(公告)号：WO2015144321A1

公开(公告)日：2015-10-01

申请号：PCT/EP2015/050806

申请日：2015-01-16

Applicant: MAXBIOGAS GMBH

Inventor： STREFFER, Friedrich

IPC: C01B25/234

CPC classification number: C01B25/234

Abstract: The present invention relates to a method for purifying phosphoric acid from a mixture which comprises organic compounds and water. In particular the present invention relates to a method for purifying phosphoric acid from a a pulping slurry, containing or consisting of phosphoric acid, one or more organic compounds and water, comprising or consisting of the following steps: i)providing a mixture containing or consisting of phosphoric acid, one or more substance(s) S having at least one secondary carbon atom attached to an alkoxy group, one or more (further) organic compounds and water, and adjusting(if necessary)the molar ratio of phosphoric acid to the total of one or more substance(s) S, having at least one secondary carbon atom attached to an alkoxy group, in the mixture to be in the range of from 1 : 0.4 to 1 : 10, preferably to be in the range of approximately 1 : 0.6 to 1: 4, especially preferably to be approximately 1 : 0.85to 1:2, ii) heating the mixture to 25 °C or more until phase separation occurs, iii) removing the light phase, and iv) separating the phosphoric acid from the heavy phase.

Abstract translation: 本发明涉及从含有有机化合物和水的混合物中提纯磷酸的方法。 特别地，本发明涉及从含有或由磷酸，一种或多种有机化合物和水组成的制浆浆液中纯化磷酸的方法，包括或由以下步骤组成：i）提供含有或由 磷酸，一个或多个具有至少一个连接到烷氧基上的仲碳原子的一种或多种物质，一种或多种（进一步）有机化合物和水，并且调整（如果需要的话）磷酸与总量的摩尔比 的一种或多种物质S，其具有至少一个连接到烷氧基的仲碳原子，在该混合物中的范围为1:0.4至1:10，优选在约1的范围内 ：0.6〜1:4，特别优选为约1：0.85〜1：2，ii）将混合物加热至25℃以上直至发生相分离，iii）除去光相，和iv）分离磷酸 从重阶段。

公开(公告)号：WO2013133684A1

公开(公告)日：2013-09-12

申请号：PCT/MA2013/000003

申请日：2013-03-06

Applicant: OCP SA

Inventor： KHALESS, Khaoula ,  KOSSIR, Abdelaali

IPC: B01D69/02 ,  B01D67/00 ,  B01D61/02 ,  C01B25/234

CPC classification number: B01D61/027 ,  B01D67/0093 ,  B01D69/02 ,  B01D2323/10 ,  B01D2323/46 ,  B01D2325/16 ,  B01D2325/30 ,  C01B25/234

Abstract: L'invention concerne un procédé de purification d'une solution d'acide phosphorique, comprenant une étape de filtration de l'acide phosphorique par une membrane de nanofiltration, dans lequel la membrane de nanofiltration est une membrane de nanofiltration organique sur laquelle est absorbé au moins un polymère hydrosoluble comprenant au moins une fonction amine, une fonction amine aromatique, une fonction acide et/ou une fonction alcool. L'invention concerne également un procédé de fabrication de ladite membrane, comprenant une étape d'absorption, sur une membrane de nanofiltration organique, d'au moins un polymère hydrosoluble comprenant au moins une fonction amine, une fonction amine aromatique, une fonction acide et/ou une fonction alcool.

Abstract translation: 本发明涉及一种纯化磷酸溶液的方法，包括使用纳滤膜过滤磷酸的步骤，其中纳滤膜是有机纳米过滤膜，其上吸收至少一种水溶性聚合物，其包含在 至少一个胺官能团，一个芳香胺官能团，一个酸官能团和/或一个醇官能团。 本发明还涉及一种制造所述膜的方法，包括在有机纳米过滤膜上吸收至少一种包含至少一种胺官能团，一个芳族胺官能团，一个酸官能团和/或其中一个酸官能团的水溶性聚合物的步骤 一个酒精功能。

公开(公告)号：WO1993025472A1

公开(公告)日：1993-12-23

申请号：PCT/FI1993000245

申请日：1993-06-07

Applicant: KEMIRA OY ,  KARJALAINEN, Timo ,  KARI, Esko

Inventor： KEMIRA OY

IPC: C01B25/234

CPC classification number: C01B25/238

Abstract: The invention relates to a process for removing iron from phosphoric acid prepared by the wet process. The Fe ions present as an impurity in the phosphoric acid are reduced to Fe ions. After the reduction the Fe ions can be removed from the phosphoric acid by cationic ion exchange.

Abstract translation: 本发明涉及通过湿法制备的从磷酸中除铁的方法。 在磷酸中作为杂质存在的Fe 3+离子被还原成Fe 2+离子。 还原后，可以通过阳离子离子交换从磷酸中除去Fe 2+离子。

公开(公告)号：WO2023083958A1

公开(公告)日：2023-05-19

申请号：PCT/EP2022/081462

申请日：2022-11-10

Applicant: TAKHIM FOR TECHNOLOGY AND BUSINESS SERVICES

Inventor： TAKHIM, Mohamed

IPC: C01B25/223 ,  C01B25/232 ,  C01B25/234

Abstract: Process for the production of a purified phosphoric acid solution and/or dicalcium phosphate salts A process for the production of purified phosphoric acid solution (31,33) comprises the steps (a) of provision of a phosphate mineral source (1); (b) of acid attack of the phosphate mineral source by a concentrated strong acid aqueous solution (3) to obtain an attack mixture (5); (c) of dilution in water (7) of the attack mixture to obtain a monocalcium phosphate solution (11); (d) filtration (e) acidulation by a strong acid (19) to obtain a phosphoric acid solution (21); (f) optional pre-purification to obtain a pre-purified phosphoric acid solution (25) and (g) of separation through a membrane (29) of the phosphoric acid solution (21, 25) to recover a purified phosphoric acid solution (31), wherein the membrane (29) is selected from a diffusion dialysis acid separation membrane, an electrodialysis-driven depletion membrane or a nanofiltration membrane. The disclosure also relates to a process of production of a dicalcium phosphate salt (47, 49).

公开(公告)号：WO2019013570A3

公开(公告)日：2019-01-17

申请号：PCT/KR2018/007915

申请日：2018-07-12

Applicant: 씨제이제일제당 (주)

Inventor： 김준우 ,  김재익 ,  김일출 ,  이인성 ,  강승훈 ,  김민섭 ,  이강훈 ,  이승제 ,  이충권 ,  정준영

IPC: C12P3/00 ,  C01B25/234 ,  C12N9/10

Abstract: 본원은 발효액 또는 이의 폐액으로부터 인산을 회수하는 방법 및 회수한 인산을 발효에 재사용하는 공정에 대한 것이다.

公开(公告)号：WO2017153298A1

公开(公告)日：2017-09-14

申请号：PCT/EP2017/055086

申请日：2017-03-03

Applicant: ATOTECH DEUTSCHLAND GMBH

Inventor： BROUZES, Alexandre ,  LAURENT, Matthieu

IPC: C01B25/234 ,  C25D5/56 ,  C23C18/16 ,  C23C18/18 ,  C23C18/20 ,  C23C18/24 ,  C23C18/54 ,  H05K3/18 ,  C23F1/46 ,  C23C18/22

Abstract: This invention pertains to a method for recovering phosphoric acid from a spent phosphoric acid / alkali metal permanganate salt etching solution containing at least one manganese oxide, characterized in that said process comprises the following successive steps: (a) heating the etching solution to a temperature between 90°C and 200°C so as to coalesce said at least one manganese oxide, (b) cooling down the resulting suspension, (c) centrifuging the cooled suspension so as to separate a liquid phase from a solid phase, and (d) recovering said liquid phase which contains phosphoric acid. It also pertains to a process for metallizing a non-conductive substrate, comprising an oxidation step with an etching solution, in which said etching solution is treated according to the above method.

Abstract translation: 本发明涉及从含有至少一种氧化锰的废磷酸/碱金属高锰酸盐蚀刻溶液中回收磷酸的方法，其特征在于所述方法包括以下连续步骤：（a ）将蚀刻溶液加热到90℃和200℃之间的温度以便使所述至少一种锰氧化物聚结，（b）冷却所得悬浮液，（c）离心冷却的悬浮液以分离液相 （d）回收含有磷酸的所述液相。 它还涉及一种用于对不导电基底进行金属化的方法，该方法包括用蚀刻溶液进行氧化步骤，其中根据上述方法处理所述蚀刻溶液。

公开(公告)号：WO2016168924A1

公开(公告)日：2016-10-27

申请号：PCT/CA2016/050449

申请日：2016-04-20

Applicant: FPINNOVATIONS

Inventor： JEMAA, Naceur ,  PALEOLOGOU, Michael ,  MAHMOOD, Talat

IPC: C13K1/04 ,  C01B17/90 ,  C01B25/234 ,  C01B7/07 ,  C07C51/47 ,  D21C11/00

CPC classification number: C13B20/146 ,  B01J41/04 ,  B01J41/13 ,  C01B17/905 ,  C07C51/47 ,  C13K1/02 ,  C13K13/002 ,  C07C55/10 ,  C07C53/02 ,  C07C59/08

Abstract: Acid hydrolysis of biomass is an important step for releasing the component sugars before converting them to fuels and/or biochemicals. During such a process, a significant amount of mineral acid, such as sulfuric acid, is used. In most cases, the residual acid is neutralized with lime before the sugar conversion step. By doing so, a waste calcium sulphate stream is generated and sent to disposal. The efficient separation of acid from the sugars would allow the recycle of the acid and make the entire process more economically viable. We found that a resin bed packed with an acid retardation resin can be used to achieve an efficient separation (i.e. 98.5% recovery of the acid) of the sulfuric acid from the sugars. The resin bed can be simply regenerated with water.

Abstract translation: 生物质的酸水解是将组分糖转化为燃料和/或生物化学物质之前释放组分糖的重要步骤。 在这样的过程中，使用大量的无机酸，例如硫酸。 在大多数情况下，在糖转化步骤之前，用石灰中和残留的酸。 通过这样做，产生废硫酸钙流并将其送到处理中。 酸与糖的有效分离将允许酸的再循环并使整个过程更经济地可行。 我们发现可以使用填充有酸性延迟树脂的树脂床来实现糖的有效分离（即酸的98.5％回收）。 树脂床可以简单地用水再生。