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1. 发明授权

US4355014A Stable calcium hypochlorite composition and method for manufacture thereof 失效
标题翻译：稳定的次氯酸钙组合物及其制备方法
公开(公告)号：US4355014A
公开(公告)日：1982-10-19
申请号：US152720
申请日：1980-05-23
申请人： Tsugio Murakami , Kazushige Igawa , Yoichi Hiraga
发明人： Tsugio Murakami , Kazushige Igawa , Yoichi Hiraga
IPC分类号： A01N59/00 , C01B11/06 , C02F1/76 , C11D3/395 , C01F11/24 , C09K3/00
CPC分类号： A01N59/00 , C01B11/064 , C02F1/76 , C11D3/3951
摘要： A stable calcium hypochlorite composition and a method for the preparation thereof. The composition has a calcium hypochlorite anhydride and/or a calcium hypochlorite dihydrate used as main constituent and comprises at least 60 wt % of calcium hypochlorite; at least 5 wt % of calcium hydroxide; at least 4 wt % of water content; and 5 wt % or less of than that calcium chloride. The composition is stable and decomposes only in a less degree at a high temperature and during storage over a long period.
摘要翻译：稳定的次氯酸钙组合物及其制备方法。该组合物具有次氯酸钙和/或次氯酸钙二水合物作为主要成分，并且包含至少60重量％的次氯酸钙; 至少5重量％的氢氧化钙; 至少4重量％的含水量; 和5重量％以下的氯化钙。该组合物是稳定的，并且在较高温度下和在长时间储存期间仅在较小程度上分解。

2. 发明授权

US4582937A Process for recovering ethyleneamines 失效
标题翻译：回收乙烯胺的方法
公开(公告)号：US4582937A
公开(公告)日：1986-04-15
申请号：US722422
申请日：1985-04-12
申请人： Yoichi Hiraga , Tsugio Murakami , Hiroyuki Saito , Osamu Fujii
发明人： Yoichi Hiraga , Tsugio Murakami , Hiroyuki Saito , Osamu Fujii
IPC分类号： C07C33/22 , C07C49/403 , C07C53/128 , C07D295/00 , C07F9/143 , C07C85/26
CPC分类号： C07C209/86
摘要： Ethyleneamines are efficiently recovered from an aqueous solution thereof by extracting them from the aqueous solution into an organic phase with an extractant selected from carbonyl group-containing organic solvents, benzyl alcohol, carboxylic acids and salts thereof, alkylphosphoric acids and salts thereof, and mixed solvents containing at least one of these extractants. The ethyleneamines in the organic phase is recovered preferably from the organic phase to the aqueous phase by incorporating an acid therein, followed by phase separation.
摘要翻译：从选自含羰基的有机溶剂，苄醇，羧酸及其盐的提取剂，烷基磷酸及其盐和混合溶剂中将其从水溶液中提取出来，可以有效地从其水溶液中回收乙烯胺含有这些萃取剂中的至少一种。通过在其中加入酸，然后进行相分离，有机相中的亚乙基胺优选从有机相回收到水相中。

3. 发明授权

US4208389A Purification of phosphoric acid 失效
标题翻译：磷酸的纯化
公开(公告)号：US4208389A
公开(公告)日：1980-06-17
申请号：US9912
申请日：1979-02-06
申请人： Yoichi Hiraga , Mitsuo Kikuchi
发明人： Yoichi Hiraga , Mitsuo Kikuchi
IPC分类号： C01B25/235 , C01B25/46 , C01B25/22
CPC分类号： C01B25/461 , C01B25/235 , C01B25/462
摘要： Wet process phosphoric acid prepared by treating phosphate rock with sulfuric acid is purified by extracting said wet process phosphoric acid with an organic solvent containing an equilibrium concentration of phosphoric acid in a first extraction section such that substantial extraction of phosphoric acid from said wet process phosphoric acid is prevented while the organic impurities in said wet process phosphoric acid are substantially extracted and under conditions which prohibit significant extraction of iron impurities into said solvent extractant, extracting the extracted wet process phosphoric acid of reduced organic impurity content with an organic solvent in a second extraction section, returning a portion of the solvent from the second extraction section to the solvent extraction phase of the first section, removing the organic impurities from the solvent phase which is obtained from the first extraction section, and returning at least a portion of the solvent from which the organic impurities have been removed to said second extraction section.
摘要翻译：通过用硫酸处理磷酸盐岩制备的湿法磷酸通过在第一提取部分中用含有平衡磷酸平衡浓度的有机溶剂萃取所述湿法磷酸来纯化，使得从所述湿法磷酸中大量萃取磷酸防止所述湿法磷酸中的有机杂质被基本提取，并且在禁止将铁杂质显着提取到所述溶剂萃取剂中的条件下，在第二次萃取中用有机溶剂提取萃取的湿法磷酸有机杂质含量将一部分溶剂从第二提取部分返回到第一部分的溶剂萃取相，从第一提取部分获得的溶剂相中除去有机杂质，并将至少一部分溶剂从哪个o 有机杂质已被去除到所述第二提取部分。

4. 发明授权

US4169881A Process for removing dissolved silica from extracted phosphoric acid 失效
标题翻译：从提取的磷酸中除去溶解的二氧化硅的方法
公开(公告)号：US4169881A
公开(公告)日：1979-10-02
申请号：US851411
申请日：1977-11-14
申请人： Mitsuo Kikuchi , Yoichi Hiraga
发明人： Mitsuo Kikuchi , Yoichi Hiraga
IPC分类号： C01B25/237 , C01B25/46 , C01B25/16
CPC分类号： C01B25/461 , C01B25/2372 , C01B25/462
摘要： A method of purifying extracted phosphoric acid containing substantially no metallic impurities which comprises:(a) adjusting the phosphoric acid concentration to from 20 to 65 wt.% as P.sub.2 O.sub.5,(b) adjusting the Si/F atomic ratio in said extracted phosphoric acid to less than 0.2; and(c) contacting said extracted phosphoric acid with silica gel at a temperature of 20.degree.-100.degree. C. to remove the dissolved silica from said extracted phosphoric acid; and(d) recovering extracted phosphoric acid having a reduced silica content.

5. 发明授权

US4154805A Phosphoric acid purification 失效
标题翻译：磷酸精制
公开(公告)号：US4154805A
公开(公告)日：1979-05-15
申请号：US842251
申请日：1977-10-14
申请人： Yoichi Hiraga , Mitsuo Kikuchi
发明人： Yoichi Hiraga , Mitsuo Kikuchi
IPC分类号： C01B25/234 , C01B25/16
CPC分类号： C01B25/234
摘要： Wet process phosphoric acid prepared by treating phosphate rock with sulfuric acid and separating calcium sulfate, is purified to obtain a purified phosphoric acid by (a) an acid extracting section contacting the wet process phosphoric acid and a phosphoric acid solution containing impurities obtained in the scrubbing section with an organic solvent in the presence of the hydrochloric acid required for extracting a substantial amount of the phosphoric acid component; (b) a scrubbing section contacting the extract obtained in the acid extracting section with aqueous phosphoric acid or water while maintaining the chloride ion concentration in the aqueous phase in the range of 20 to 40 g/liter as Cl; (c) an acid stripping section contacting the purified extract obtained in the scrubbing section with water and (d) an adsorbing section contacting the extracted phosphoric acid obtained in the acid stripping section with an anion-exchange resin.
摘要翻译：通过用硫酸处理磷酸盐岩和分离硫酸钙制备的湿法磷酸，通过（a）与湿法磷酸接触的酸提取部分和在洗涤中获得的含杂质的磷酸溶液进行纯化，得到纯化的磷酸在提取大量磷酸组分所需的盐酸存在下用有机溶剂进行切片; （b）将酸提取部中得到的提取物与磷酸水溶液接触，同时将水相中的氯离子浓度保持在20〜40g /升的范围内的洗涤部分作为Cl; （c）将洗涤部分中得到的纯化提取物与水接触的酸性汽提部分和（d）与酸性汽提部分中得到的提取的磷酸接触的吸附部分与阴离子交换树脂。

6. 发明授权

US4349519A Purification of wet process phosphoric acid 失效
标题翻译：湿法磷酸的纯化
公开(公告)号：US4349519A
公开(公告)日：1982-09-14
申请号：US214671
申请日：1980-12-09
申请人： Yoichi Hiraga , Osamu Watanabe , Masaki Nakatani
发明人： Yoichi Hiraga , Osamu Watanabe , Masaki Nakatani
IPC分类号： C01B25/234 , C01B25/46 , C01B25/16
CPC分类号： C01B25/462
摘要： A wet process phosphoric acid obtained by an solvent extraction method with n-butanol and/or isobutanol comprises(a) feeding a wet process phosphoric acid having a concentration of P.sub.2 O.sub.5 of higher than 35 wt. % into an extraction battery;(b) adding sulfuric acid into a stage in fifth or higher stage from the step of discharging an extracted solution and in second or higher stage from the step of discharging raffinate in the extraction battery at a gram equivalent ratio given by subtracting the amount of sulfuric acid in the wet process phosphoric acid fed into the extraction battery from 1.2 to 2.0 times of the sum of total cation impurities in the wet process phosphoric acid fed into the extraction battery and total components of sodium, potassium and magnesium added to the purification battery;(c) discharging said extracted solution having a concentration of H.sub.3 PO.sub.4 of 130 to 180 g./liter from said extraction battery;(d) adding at least one of the compounds of sodium, potassium and magnesium in second or higher stage from the step of discharging the solvent phase and in second or higher stage from the step of discharging the aqueous phase in the purification battery to give more than 0.4 equivalent per liter of the concentration of sodium, potassium and magnesium in the aqueous phase in the stage where at least one of alkali metal and magnesium compounds is added in the same battery.
摘要翻译：通过用正丁醇和/或异丁醇的溶剂萃取方法获得的湿法磷酸包括（a）加入浓度为P 2 O 5的湿法磷酸高于35wt。％进入提取电池; （b）从排出萃取溶液的步骤的第五阶段或更高阶段的阶段加入硫酸，并且在从萃取电池中排出萃余液的步骤的第二阶段或更高阶段，以克当量比减去硫酸的量酸在湿法磷酸中加入萃取电池中的1.2倍到2.0倍的总阳离子杂质在湿法中加入磷酸进料到萃取电池中，并将总成分中的钠，钾和镁添加到净化电池中; （c）从所述提取电池中排出浓度为H 3 PO 4的所述提取溶液为130至180克/升; （d）从排出溶剂相的步骤的第二阶段或更高阶段加入至少一种钠，钾和镁的化合物，并且在从净化电池中排出水相的步骤的第二或更高阶段中加入更多在相同的电池中添加碱金属和镁化合物中的至少一种的阶段中，每升浓度的钠，钾和镁的浓度超过0.4当量。

7. 发明授权

US4070443A Process for removing sulfate ions from extracted phosphoric acid with a barium compound 失效
标题翻译：用钡化合物从提取的磷酸中除去硫酸根离子的方法
公开(公告)号：US4070443A
公开(公告)日：1978-01-24
申请号：US698710
申请日：1976-06-22
申请人： Mitsuo Kikuchi , Yoichi Hiraga
发明人： Mitsuo Kikuchi , Yoichi Hiraga
IPC分类号： C01B25/234 , C01B25/16
CPC分类号： C01B25/234
摘要： A process for removing sulfate ions from extracted phosphoric acid which is substantially free of metallic ion impurities and which has been prepared by extracting wet process phosphoric acid with an organic solvent which comprises:A. adjusting the extracted phosphoric acid concentration to a concentration greater than 70%;B. adding an amount of a barium compound which is less than the stoichiometric equivalent amount of barium relative to the amount of dissolved sulfate ion to form barium sulfate crystals; andC. separating said barium sulfate from the resulting slurry at a temperature less than 80.degree. C and recovering purified, extracted phosphoric acid;Wherein the amount of barium compound added is such that said purified extracted phosphoric acid contains at least 5 ppm of sulfate ions.
摘要翻译：从基本上不含金属离子杂质的提取的磷酸中除去硫酸根离子的方法，其通过用有机溶剂萃取湿法磷酸制备，该方法包括：

8. 发明授权

US4041134A Process for removing sulfate ions from extracted phosphoric acid employing barium compounds and activated carbon 失效
标题翻译：使用钡化合物和活性炭从提取的磷酸中除去硫酸根离子的方法
公开(公告)号：US4041134A
公开(公告)日：1977-08-09
申请号：US695309
申请日：1976-06-11
申请人： Mitsuo Kikuchi , Yoichi Hiraga
发明人： Mitsuo Kikuchi , Yoichi Hiraga
IPC分类号： C01B25/237 , C01B25/234 , C01B25/16
CPC分类号： C01B25/234
摘要： A process for removing sulfate ions from extracted phosphoric acid which is substantially free of metallic ion contaminants, which comprises adding less than the stoichiometric equivalent of a barium compound relative to the amount of dissolved sulfate ion to said extracted phosphoric acid to form barium sulfate crystals, adding active carbon to the resulting slurry, separating the solid components from the slurry and recovering purified phosphoric acid.
摘要翻译：从基本上不含金属离子污染物的提取的磷酸中除去硫酸根离子的方法，其包括相对于所述提取的磷酸溶解的硫酸根离子的量少于化学计量当量的钡化合物以形成硫酸钡晶体，向所得浆料中加入活性炭，将固体组分与浆料分离并回收纯化的磷酸。

9. 发明授权

US4637922A Method for removing organic materials from a wet process phosphoric acid 失效
标题翻译：从湿法磷酸中除去有机物质的方法
公开(公告)号：US4637922A
公开(公告)日：1987-01-20
申请号：US814298
申请日：1985-12-30
申请人： Masaki Nakatani , Yoichi Hiraga
发明人： Masaki Nakatani , Yoichi Hiraga
IPC分类号： C01B25/237 , C01B25/235 , C01B25/16
CPC分类号： C01B25/235
摘要： A method for removing organic materials from a wet process phosphoric acid obtained by treating an uncalcined phosphate rock with sulfuric acid. The wet process phosphoric acid is contacted with a reducing material having a standard single electrode potential of at most 1.42 V and then further contacted with active carbon.
摘要翻译：从用硫酸处理未煅烧磷酸盐岩获得的湿法磷酸中除去有机材料的方法。湿法磷酸与具有至多1.42V的标准单电极电位的还原材料接触，然后与活性炭进一步接触。

10. 发明授权

US4377562A Solvent extraction method of phosphoric acid 失效
标题翻译：磷酸溶剂萃取法
公开(公告)号：US4377562A
公开(公告)日：1983-03-22
申请号：US309774
申请日：1981-10-08
申请人： Yoichi Hiraga , Osamu Watanabe
发明人： Yoichi Hiraga , Osamu Watanabe
IPC分类号： C01B25/234 , C01B25/46 , C01B25/16
CPC分类号： C01B25/462 , C01B25/461
摘要： A method for solvent extraction of phosphoric acid comprises counter-currently contacting an impure phosphoric acid solution containing at least 45 wt. % of P.sub.2 O.sub.5 with a partially water-miscible solvent in the presence of sulfuric acid, and which is characterized in that(a) as said solvent, a solvent in which from 3 to 10 wt. % of water is soluble, is used, and(b) sulfuric acid is added to a place where the H.sub.3 PO.sub.4 concentration in the aqueous phase is at most 3 mol./l so as to bring the relation between the free sulfuric acid concentration (Y (mol/l)) and the H.sub.3 PO.sub.4 concentration (X (mol/l)) in the aqueous phase of the same place to satisfy the formula5.0-0.83X.gtoreq.Y.gtoreq.2.5-0.83X within the range of the H.sub.3 PO.sub.4 concentration in the aqueous phase being from 0.5 to 3 mol/l.
摘要翻译：溶剂萃取磷酸的方法包括与含有至少45wt。％的P 2 O 5与部分水混溶性溶剂在硫酸的存在下反应，其特征在于：（a）作为所述溶剂，其中3-10wt。使用％的水溶解，并且（b）将硫酸加入水相中的H 3 PO 4浓度为3摩尔/升以下的地方，以使游离硫酸浓度（Y （mol / l））和H 3 PO 4浓度（X（mol / l））在满足公式5.0-0.83X> / = Y> / = 2.5-0.83X的范围内水相中的H 3 PO 4浓度为0.5-3mol / l。

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