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1. 发明授权

US4200620A Decontamination of wet-processed phosphoric acid 失效
标题翻译：湿法磷酸的去污
公开(公告)号：US4200620A
公开(公告)日：1980-04-29
申请号：US859879
申请日：1977-12-12
申请人： Klaus-Peter Ehlers , Wolfgang Scheibitz , Klaus Schrodter , Gero Heymer
发明人： Klaus-Peter Ehlers , Wolfgang Scheibitz , Klaus Schrodter , Gero Heymer
IPC分类号： C01B25/234 , C01B25/16
CPC分类号： C01B25/234
摘要： Wet-processed phosphoric acid is decontaminated. To this end, the phosphoric acid and an organic solvent, which is partially miscible with water and capable of absorbing phosphoric acid, are contacted countercurrently with respect to one another. The resulting organic phosphoric acid solution is separated from contaminants unabsorbed by the solvent, termed primary raffinate, decontaminated phosphoric acid is recovered either in the form of free acid by re-extracting the organic phosphoric acid solution with water, or in the form of an alkali metal phosphate by reacting the organic phosphoric acid solution with an alkali, and the primary raffinate is treated countercurrently with a solvent containing a mineral acid. More specifically, the organic phosphoric acid extract, which orginates from the primary raffinate treatment and contains more than 0 up to at most 10 weight% of water, is mixed with an anhydrous solvent in a ratio by weight necessary to ensure the formation of a mixture containing more than 0 and less than 50% of water than would correspond to the saturation concentration of water in the solvent; and the mixture is contacted countercurrently with the phosphoric acid which is to be decontaminated.
摘要翻译：湿法处理的磷酸被去污。为此，磷酸和与水部分混溶且能够吸收磷酸的有机溶剂相对于彼此逆流接触。所得到的有机磷酸溶液与被称为初级萃余液的溶剂未被吸收的污染物分离，通过用水再次萃取有机磷酸溶液或以碱的形式将去污的磷酸以游离酸的形式回收通过使有机磷酸溶液与碱反应，并且将主要提余液与含有无机酸的溶剂逆流处理。更具体地说，将来自主要提余液处理并含有大于0至多10重量％的水的有机磷酸提取物与无水溶剂以确保形成混合物所需的重量比混合含量超过溶于溶剂中的水的饱和浓度的0以上且小于50％的水; 并且将该混合物与待净化的磷酸逆流接触。

2. 发明授权

US4222994A Solvent extraction purification of wet-processed phosphoric acid 失效
标题翻译：溶剂萃取净化湿法磷酸
公开(公告)号：US4222994A
公开(公告)日：1980-09-16
申请号：US859681
申请日：1977-12-12
申请人： Klaus-Peter Ehlers , Wolfgang Scheibitz , Klaus Schrodter , Gero Heymer
发明人： Klaus-Peter Ehlers , Wolfgang Scheibitz , Klaus Schrodter , Gero Heymer
IPC分类号： C01B25/234 , C01B25/46 , C01B25/16
CPC分类号： C01B25/462 , C01B25/234 , C01B25/461
摘要： Wet-processed phosphoric acid is purified by counter-current extraction with the use of an organic solvent, in which water is partially soluble and which is capable of absorbing phosphoric acid, the organic phosphoric acid extract is separated from residual wet-processed phosphoric acid, unabsorbed by the solvent, and phosphoric acid is recovered from the separated organic phosphoric acid extract. More specifically, the wet-processed phosphoric acid is extracted with the use of a solvent containing more than 0 and less than 50% of water, based on the saturation concentration, and a mineral acid in a quantity corresponding to the quantity, in moles, of cation-bound phosphate in the crude acid.
摘要翻译：湿法处理的磷酸通过使用其中水部分可溶并能够吸收磷酸的有机溶剂的逆流萃取来纯化，有机磷酸提取物与残留的湿法磷酸分离，未被溶剂吸收，从分离的有机磷酸提取物中回收磷酸。更具体地说，湿法处理的磷酸根据饱和浓度使用含有大于0且小于50％的水的溶剂提取，无机酸的量相当于摩尔数，的阳离子结合磷酸盐。

3. 发明授权

US4180471A Production of blends of crystalline zeolite and sodium triphosphate 失效
标题翻译：生产结晶沸石和三磷酸钠的共混物
公开(公告)号：US4180471A
公开(公告)日：1979-12-25
申请号：US960240
申请日：1978-11-13
申请人： Klaus Schrodter , Joachim Kandler , Hasso Spott
发明人： Klaus Schrodter , Joachim Kandler , Hasso Spott
IPC分类号： C11D3/06 , C11D3/12 , C11D11/02 , C01B33/28 , C02B1/44 , C11D11/00
CPC分类号： C11D11/02 , C11D3/06 , C11D3/128 , Y10S423/24
摘要： Blends of crystalline zeolites and sodium triphosphate are made. To this end, a zeolite suspension is spray-dried jointly with an aqueous sodium orthophosphate solution or suspension, in which the molar ratio of Na to P necessary to produce zeolite-free sodium triphosphate containing Na and P in a theoretical ratio of 1.66 is reduced by decrements of 0.01% per each 10% by weight proportion of zeolite in the blend. The zeolite suspension is sprayed separately from the orthophosphate solution or suspension at a separation necessary for the resulting zeolite particles to dry superficially and for the resulting phosphate particles to undergo at least partial condensation, and the superficially dry particles are contacted with the at least partially condensed particles.
摘要翻译：制成结晶沸石和三磷酸钠的共混物。为此，将沸石悬浮液与正磷酸钠溶液或悬浮液联合喷雾干燥，其中产生无理论比例为1.66的含有Na和P的无沸石三聚磷酸钠所需的Na与P的摩尔比降低通过在共混物中每10重量％的沸石的比例减少0.01％。将沸石悬浮液与正磷酸盐溶液或悬浮液分开喷雾，以使所得沸石颗粒表面干燥，并使得到的磷酸盐颗粒进行至少部分冷凝，并将表面干燥的颗粒与至少部分冷凝的粒子。

4. 发明授权

US4806324A Process for making phosphoric acid free from titanium 失效
标题翻译：制备不含钛的磷酸的方法
公开(公告)号：US4806324A
公开(公告)日：1989-02-21
申请号：US152751
申请日：1988-02-05
申请人： Gunther Schimmel , Reinhard Gradl , Klaus Schrodter
发明人： Gunther Schimmel , Reinhard Gradl , Klaus Schrodter
IPC分类号： C01B25/234 , C01B25/46 , C01B25/16
CPC分类号： C01B25/462 , C01B25/461
摘要： Phosphoric acid substantially free from titanium is made from the organic extract obtained by subjecting crude phosphoric acid containing titanium to extractive purification with an organic solvent immiscible or only partially miscible with water. To this end, the organic extract is scrubbed in a scrubbing zone with a stage number of n>4 by introducing the crude extract into stage 1 and scrubbing it countercurrently with an aqueous alkaline solution in one of stages 2 to n-2 and with pure scrubbing water in stage n.
摘要翻译：基本上不含钛的磷酸由有机提取物制得，所述有机提取物通过用不溶混或仅与水部分混溶的有机溶剂对含有钛的粗磷酸进行萃取纯化而获得。为此，通过将粗提取物引入阶段1并将其与阶段2至n-2之一中的碱性水溶液逆流洗涤，并且纯化到具有阶段数n> 4的洗涤区中，有机萃取物被洗涤在阶段n洗涤水。

5. 发明授权

US4777028A Process for freeing mineral acids from heavy metals 失效
标题翻译：从重金属中释放无机酸的方法
公开(公告)号：US4777028A
公开(公告)日：1988-10-11
申请号：US009188
申请日：1987-01-30
申请人： Klaus Schrodter
发明人： Klaus Schrodter
IPC分类号： C01B7/07 , C01B17/90 , C01B25/234 , C01B25/238 , C01B25/24 , C01G45/10 , C22B3/00 , C22B13/08 , C22B30/00 , C01B25/16
CPC分类号： C01B17/901 , C01B25/238 , C01B25/24 , C01B7/0706 , C01G45/10
摘要： Mineral acids are freed from heavy metals, especially copper, arsenic, antimony and lead by precipitating the metals in sulfide form. To this end, the mineral acid is reacted with hydrogen sulfide or an alkali metal sulfide solution under pressure and with thorough agitation, and formed solid matter is subsequently separated from the mineral acid under the pressure selected. The mineral acid may conveniently by admixed initially with a filter aid and then treated with hydrogen sulfide or the alkali metal sulfide solution.
摘要翻译：矿物酸通过沉淀硫化物形式的金属而从重金属，特别是铜，砷，锑和铅中除去。为此，无机酸在压力和充分搅拌下与硫化氢或碱金属硫化物溶液反应，随后在所选择的压力下将形成的固体物质与无机酸分离。无机酸可以方便地通过与助滤剂混合，然后用硫化氢或碱金属硫化物溶液处理。

6. 发明授权

US4346066A Purification of wet-process phosphoric acid 失效
标题翻译：湿法磷酸的纯化
公开(公告)号：US4346066A
公开(公告)日：1982-08-24
申请号：US164365
申请日：1980-06-30
申请人： Reinhard Gradl , Klaus Schrodter , Klaus-Peter Ehlers , Wolfgang Scheibitz
发明人： Reinhard Gradl , Klaus Schrodter , Klaus-Peter Ehlers , Wolfgang Scheibitz
IPC分类号： C01B25/234 , C01B25/46 , C01B25/16
CPC分类号： C01B25/462 , C01B25/461
摘要： The invention relates to the decontamination of wet-processed phosphoric acid with the use of organic solvents in a plurality of extraction zones, of which each is comprised of a mixing zone and a separating zone, the solvent being immiscible or partially miscible with water. Resulting organic phase and the aqueous phase are contacted countercurrently with respect to one another, the organic solvent phase being dispersed in the aqueous phase. To this end, the invention provides for the aqueous phase to be admitted to the mixing zone at the onset of the extraction, and for organic phase and aqueous phase to be continuously admitted in a volume ratio of at least 2.5:1 to the respective extracting zones in an overall quantity sufficient to provide, in the mixing zones of the extraction zones, a volume ratio of organic phase to aqueous phase of at most 1:1, which is maintained therein.
摘要翻译：本发明涉及在多个提取区中使用有机溶剂对湿法磷酸进行去污，其中每一个由混合区和分离区构成，溶剂与水不混溶或部分混溶。所得的有机相和水相相对于彼此逆流接触，有机溶剂相分散在水相中。为此，本发明提供了在提取开始时允许进入混合区的水相，并且使有机相和水相以相对于萃取物的至少2.5:1的体积比连续进入总量足以在萃取区的混合区中提供最多保持在其中的有机相与水相的体积比至多为1：1的区域。

7. 发明授权

US4313826A Liquid-liquid extraction apparatus 失效
标题翻译：液 - 液萃取仪
公开(公告)号：US4313826A
公开(公告)日：1982-02-02
申请号：US164035
申请日：1980-06-30
申请人： Reinhard Gradl , Klaus Schrodter , Klaus-Peter Ehlers
发明人： Reinhard Gradl , Klaus Schrodter , Klaus-Peter Ehlers
IPC分类号： B01D11/04 , C01B25/46 , C22B3/02 , C22B3/26 , B01D17/02
CPC分类号： C22B3/02 , B01D11/0457 , C01B25/462 , C22B3/0005 , Y02P10/234
摘要： The present invention relates to a mixer/settler-type apparatus for continuous liquid-liquid extraction. The apparatus is comprised of a separating vessel with an inclined bottom portion and an agitator-provided mixing vessel. The mixing vessel is tightly mounted to the inclined bottom portion of the separating vessel, the latter being formed with an upper outlet and a lower outlet and having a level indicator LI for determining phase boundary surface area installed therein. The lower outlet is passed through the separating vessel near its lowermost level and the upper outlet is passed therethrough near its upper end. The level indicator LI is connected to a regulator giving adjustment instructions to a structural element permitting the phase boundary surface area to be established in the separating vessel, distinctly above the upper end of the mixing vessel.
摘要翻译：本发明涉及一种用于连续液 - 液萃取的混合器/沉降器型装置。该装置由具有倾斜底部的分离容器和具有搅拌器的混合容器组成。混合容器紧紧地安装在分离容器的倾斜底部，后者形成有上部出口和下部出口，并具有用于确定安装在其中的相界面的水平指示器LI。下部出口通过分离容器在其最低水平附近，并且上部出口在其上端附近通过。电平指示器LI连接到调节器，其向结构元件施加调节指令，允许在分离容器中建立相界面表面积，明显地高于混合容器的上端。

8. 发明授权

US4321245A Process for the purification of wet-processed phosphoric acid 失效
标题翻译：纯化湿法磷酸的方法
公开(公告)号：US4321245A
公开(公告)日：1982-03-23
申请号：US205172
申请日：1980-11-10
申请人： Reinhard Gradl , Klaus Schrodter , Klaus-Peter Ehlers
发明人： Reinhard Gradl , Klaus Schrodter , Klaus-Peter Ehlers
IPC分类号： C01B25/234 , C01B25/46 , C01B25/16
CPC分类号： C01B25/462 , C01B25/461
摘要： The invention relates to a process for the purification of wet-processed phosphoric acid with the aid of organic solvents which are immiscible or only partially miscible with water, the sulfate ions being removed by addition of barium compounds. The purification is carried out in an n-stage extraction installation, where n is equal to or greater than 5. The barium compound is added to the phosphoric acid to be purified, and the resulting mixture is fed to the top of the extraction installation, in which the organic solvent phase is dispersed in the aqueous phase. The sulfuric acid is led in counter-current fashion to the phosphoric acid by adding it to one of the stages n=4 to at most n-1.
摘要翻译：本发明涉及一种借助有机溶剂净化湿法磷酸的方法，所述有机溶剂是不混溶的或仅与水部分混溶，通过加入钡化合物除去硫酸根离子。纯化在n级提取装置中进行，其中n等于或大于5.将钡化合物加入待纯化的磷酸中，并将所得混合物进料至萃取装置的顶部，其中有机溶剂相分散在水相中。硫酸通过将其添加到n = 4至n-1个中的一个阶段中，以相反的方式引入磷酸。

9. 发明授权

US4299803A Production of alkali metal phosphate solutions free from zinc 失效
标题翻译：生产不含锌的碱金属磷酸盐溶液
公开(公告)号：US4299803A
公开(公告)日：1981-11-10
申请号：US104570
申请日：1979-12-17
申请人： Klaus Schrodter , Klaus-Peter Ehlers , Roelof Mulder
发明人： Klaus Schrodter , Klaus-Peter Ehlers , Roelof Mulder
IPC分类号： C01B25/30
CPC分类号： C01B25/303
摘要： The invention relates to the production of alkali metal phosphate solutions free of zinc, from phosphoric acid solutions contaminated with zinc. To this end, feed solution is admixed with alkali metal hydroxide or carbonate so as to establish in the resulting suspension a pH-value within the range 8 to 14. Next, resulting suspension is reacted under pressure and with thorough agitation with H.sub.2 S or an alkali metal sulfide solution; and decontaminated alkali metal phosphate solution is separated from solid matter, the pressure being maintained.
摘要翻译：本发明涉及从被锌污染的磷酸溶液中生产不含锌的碱金属磷酸盐溶液。为此，将进料溶液与碱金属氢氧化物或碳酸盐混合，以便在所得悬浮液中建立pH值在8至14的范围内。接着，将所得悬浮液在压力下和用H 2 S或碱彻底搅拌下反应金属硫化物溶液; 并将净化的碱金属磷酸盐溶液与固体物质分离，保持压力。

10. 发明授权

US4279878A Process for freeing phosphoric acid from organic contaminants 失效
标题翻译：从有机污染物中释放磷酸的方法
公开(公告)号：US4279878A
公开(公告)日：1981-07-21
申请号：US131234
申请日：1980-03-17
申请人： Alexander Maurer , Klaus Schrodter , Gero Heymer
发明人： Alexander Maurer , Klaus Schrodter , Gero Heymer
IPC分类号： C01B25/237 , B01J23/00 , C01B25/235 , C01B25/16
CPC分类号： C01B25/235
摘要： The invention relates to a process for freeing aqueous phosphoric acid solutions from organic contaminants. To this end, the solutions are admixed and reacted with hydrogen peroxide in the presence of a catalyst consisting of a noble metal or metal oxide being inert with respect to phosphoric acid or of a mixture of said noble metal and metal oxide.
摘要翻译：本发明涉及从有机污染物中释放磷酸水溶液的方法。为此，在由相对于磷酸或所述贵金属和金属氧化物的混合物呈惰性的贵金属或金属氧化物组成的催化剂存在下，将溶液混合并与过氧化氢反应。

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