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公开(公告)号：US4368179A
公开(公告)日：1983-01-11
申请号：US209845
申请日：1980-11-24
申请人： Gunther Shimmel , Gero Heymer , Hasso Scott
发明人： Gunther Shimmel , Gero Heymer , Hasso Scott
CPC分类号： C01B25/30 , C01B25/41 , C01B25/425
摘要： The present invention relates to a process for the oxidation of alkali metal phosphites to alkali metal phosphates at temperatures of between 400.degree. and 500.degree. C. To this end, alkali metal phosphites are employed in the form of an aqueous solution or suspension and, if necessary, the alkali metal : P atomic ratio in this feed material is adjusted to a ratio which at least corresponds to the atomic ratio desired for the final product.More particularly, the solution or suspension is spray-dried in a tower, in a single operational stage, by spraying in a flame zone. Starting material free from alkali metal phosphate and with an alkali metal : P atomic ratio equal to or greater than 3.5 is used for making a trialkali metal phosphate which is obtained in admixture with an alkali metal hydroxide. Starting material which contains from 25 to 45% by weight of alkali metal phosphate, calculated as phosphorus, based on their total phosphorus content, is employed for making alkali metal polyphosphates.
摘要翻译： 本发明涉及在400〜500℃的温度下将碱金属亚磷酸盐氧化为碱金属磷酸盐的方法。为此，碱金属亚磷酸盐以水溶液或悬浮液的形式使用，如果 必要时，将该原料中的碱金属：P原子比调节至至少对应于最终产物所需的原子比的比例。 更具体地说，溶液或悬浮液在塔中在单个操作阶段通过在火焰区域中喷雾进行喷雾干燥。 使用不含碱金属磷酸盐和碱金属的原料：P原子比等于或大于3.5，用于制备与碱金属氢氧化物混合得到的三碱金属磷酸盐。 使用含有25〜45重量％碱金属磷酸盐的起始原料，以磷总计计为磷，用于制造碱金属多磷酸盐。
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公开(公告)号：US4351960A
公开(公告)日：1982-09-28
申请号：US190448
申请日：1980-09-24
申请人： Georg Elsner , Hartfrid Vollmer , Gero Heymer
发明人： Georg Elsner , Hartfrid Vollmer , Gero Heymer
IPC分类号： C07F9/50
CPC分类号： C07F9/5018
摘要： The invention relates to a process for making an isomeric mixture of secondary phosphines with the summation formula C.sub.20 H.sub.27 P. To this end, hydrogen phosphide is reacted with dicyclopentadiene in the presence of an agent yielding free radicals. More specifically, hydrogen phosphide and dicyclopentadiene are used in a molar ratio of 1 to at least 2 and the reaction is effected under a pressure of 5 to 90 bars. The mixture is used in the production of flotation aids and as an ingredient of catalytically active transition metal complexes.
摘要翻译： 本发明涉及一种制备仲膦与异构体混合物的方法，其中R为总和式C20H27P。 为此，在产生自由基的试剂存在下，磷化氢与二环戊二烯反应。 更具体地，使用磷化氢和二环戊二烯的摩尔比为1至至少2，反应在5至90巴的压力下进行。 该混合物用于生产浮选助剂和作为催化活性过渡金属络合物的成分。
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公开(公告)号：US4278647A
公开(公告)日：1981-07-14
申请号：US60659
申请日：1979-07-25
申请人： Klaus Jodden , Hans-Werner Stephan , Gero Heymer
发明人： Klaus Jodden , Hans-Werner Stephan , Gero Heymer
IPC分类号： C01B25/163 , C01B25/16 , C01B25/26
CPC分类号： C01B25/163
摘要： The invention relates to a process for making aqueous phosphorous acid solutions by admixing an aqueous sodium phosphite solution with hydrochloric acid. More specifically, phosphorous acid solutions substantially free from sodium in hydrochloric acid are produced by introducing hydrogen chloride, into the sodium phosphite solution until the latter is saturated therewith and separating precipitating sodium chloride from the resulting phosphorous acid solution in hydrochloric acid.
摘要翻译： 本发明涉及通过将亚磷酸钠水溶液与盐酸混合来制备亚磷酸水溶液的方法。 更具体地说，在盐酸中基本上不含钠的亚磷酸溶液通过将氯化氢引入到亚磷酸钠溶液中而产生，直至后者被饱和，并从所得的亚磷酸溶液中在盐酸中分离沉淀的氯化钠。
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公开(公告)号：US4200620A
公开(公告)日：1980-04-29
申请号：US859879
申请日：1977-12-12
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。
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公开(公告)号：US4134964A
公开(公告)日：1979-01-16
申请号：US815248
申请日：1977-07-13
申请人： Klaus P. Ehlers , Gero Heymer
发明人： Klaus P. Ehlers , Gero Heymer
IPC分类号： C01B25/237 , C01B25/18
CPC分类号： C01B25/237
摘要： Process and apparatus for purifying crude wet-processed phosphoric acid containing free sulphuric acid. To this end, the wet-processed phosphoric acid is treated in a reaction zone, at a temperature of 70.degree. C to 100.degree. C, with a calcium compound and with calcium sulphate seed crystals; the sulphuric acid is precipitated in the form of calcium sulphate semihydrate with the resultant formation of a suspension; a proportion of the suspension, with the calcium sulphate semihydrate seed crystals present therein, is recycled to the reaction zone; the balance of the suspension is treated for separation of purified phosphoric acid from the accompanying precipitate; the precipitate is transformed into an aqueous suspension and the calcium sulphate semihydrate in said suspension is converted into calcium sulphate dihydrate; the aqueous phase of the suspension is separated from the solid matter therein, and the solid matter is water-washed; a proportion of the aqueous phase so separated is recycled together with a proportion of the wash water, for use in suspending and converting calcium sulphate semihydrate to dihydrate; and the balance of the aqueous phase and wash water are combined with the said purified phosphoric acid.
摘要翻译： 用于净化含有游离硫酸的粗制湿法磷酸的方法和装置。 为此，湿法处理的磷酸在反应区中在70℃至100℃的温度下用钙化合物和硫酸钙晶种进行处理; 硫酸盐以硫酸钙半水合物的形式沉淀，形成悬浮液; 其中存在硫酸钙半水合物晶种的一部分悬浮液被再循环到反应区; 处理悬浮液的余量用于从所伴随的沉淀物中分离纯化的磷酸; 将沉淀物转化为水性悬浮液，并将所述悬浮液中的硫酸钙半水合物转化为硫酸钙二水合物; 悬浮液的水相与其中的固体物质分离，固体物质被水洗; 所分离的水相的一部分与一部分洗涤水一起再循环，用于将硫酸钙半水合物悬浮并转化成二水合物; 并将水相和洗涤水的余量与所述纯化的磷酸组合。
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56.发明授权
公开(公告)号：US4134962A
公开(公告)日：1979-01-16
申请号：US771167
申请日：1977-02-23
申请人： Klaus-Peter Ehlers , Gero Heymer
发明人： Klaus-Peter Ehlers , Gero Heymer
CPC分类号： C01B25/303
摘要： Alkali metal phosphate solutions (alkali metal oxide : P.sub.2 O.sub.5 - molar ratio greater than 1.9 : 1) of reduced vanadium and chromium contents are made from wet-processed phosphoric acids which are neutralized by means of an alkali metal hydroxide and/or carbonate. The alkali metal phosphate solutions contain less than 20 ppm of vanadium and less than 1 ppm of chromium and are made by stepwise neutralization. More specifically the acid is neutralized in a first step to an alkali metal oxide to P.sub.2 O.sub.5 - molar ratio of 1.0 : 1 to 1.8 : 1; resulting precipitate is separated and resulting solution is admixed with iron(II)salt at 60 to 90.degree. C. Next, the acid is neutralized in a second step to an alkali metal oxide to P.sub.2 O.sub.5 - molar ratio greater than 1.9 : 1, and resulting precipitate is separated again.
摘要翻译： 还原的钒和铬含量的碱金属磷酸盐溶液（碱金属氧化物：P2O5 - 大于1.9:1的摩尔比）由湿法处理的磷酸制成，这些磷酸通过碱金属氢氧化物和/或碳酸盐中和。 碱金属磷酸盐溶液含有小于20ppm的钒和小于1ppm的铬，并且通过逐步中和制备。 更具体地，将酸在第一步中中和至碱金属氧化物至P2O5-摩尔比为1.0:1至1.8:1; 分离得到的沉淀物，得到的溶液与铁（II）盐在60至90℃下混合。接下来，将酸在第二步中中和至碱金属氧化物至P2O5-摩尔比大于1.9:1，得到 沉淀再次分离。
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57.发明授权Process for the production of substantially water-insoluble linear ammonium polyphosphates 失效用于生产大量不溶于水的无定形直链氨基磷酸酯的方法
公开(公告)号：US3978195A
公开(公告)日：1976-08-31
申请号：US475820
申请日：1974-06-03
CPC分类号： C05B13/06
摘要： Production of substantially water-insoluble linear ammonium polyphosphates of the general formula (NH.sub.4 PO.sub.3).sub.n, in which n is a number between 10 and 1000. To this end, substantially equimolecular proportions of ammonium orthophosphate and phosphorus pentoxide are reacted by heating them to temperatures within the range 170.degree. and 350.degree.C in the presence of gaseous ammonia. The reaction is effected while continuously and simultaneously mixing, kneading and comminuting the reaction material in a reactor. The reactor is closed, provided with means for the supply of solid feed material, a gas inlet and a gas outlet, a discharge opening for the removal of final product, and with mixing, kneading and comminuting implements which are rotatably secured to the inside of the reactor.
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公开(公告)号：US3953581A
公开(公告)日：1976-04-27
申请号：US463531
申请日：1974-04-24
IPC分类号： C01B4/00 , B01D11/00 , C01B25/22 , C01B25/234 , C01B25/16
CPC分类号： C01B25/234
摘要： Contaminated wet-processed phosphoric acid is purified. To this end, the wet-processed phosphoric acid is mixed with one or more organic solvents, in which water is partially soluble, the organic solvent(s) is (are) separated from unabsorbed wet-processed phosphoric acid portions, and phosphoric acid is recovered from the organic solvent(s) so separated. The organic solvent(s) are more particularly used in the form of anhydrous material and at least in the quantity necessary to ensure dissolution (a) of the overall quantity of phosphoric acid contained in the wet-processed phosphoric acid and (b) of the free water therein.
摘要翻译： 污染的湿法磷酸被纯化。 为此，湿法处理的磷酸与一种或多种有机溶剂混合，其中水部分可溶，有机溶剂与未吸收的湿法磷酸部分分离，磷酸为 从这样分离的有机溶剂中回收。 有机溶剂更特别地以无水材料的形式使用，并且至少以确保溶解（a）湿法加工的磷酸中所含的磷酸总量所需的量（a）和 自由水。
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公开(公告)号：US3943231A
公开(公告)日：1976-03-09
申请号：US370626
申请日：1973-06-18
摘要： The invention provides condensed aluminum phosphates which contain P.sub.2 O.sub.5 and Al.sub.2 O.sub.3 in a molar ratio equal to or greater than 1.5:1, are X-ray amorphous and have an apparent density between 50 and 200 grams/liter.They are made by spray-drying an aluminum orthophosphate solution or suspension containing P.sub.2 O.sub.5 and Al.sub.2 O.sub.3 in the molar ratio desired in the final product, in a spray tower at temperatures higher thana 250.degree.C to effect direct transformation into condensed aluminum phosphates.
摘要翻译： 本发明提供含有摩尔比等于或大于1.5:1的P 2 O 5和Al 2 O 3的浓缩磷酸铝，是X射线无定形的，表观密度在50-200克/升之间。
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