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1. 发明授权

US4364914A Process for the manufacture of potassium nitrate with co-production of hydrochloric acid 失效
标题翻译：共同生产盐酸制造硝酸钾的方法
公开(公告)号：US4364914A
公开(公告)日：1982-12-21
申请号：US249677
申请日：1981-03-31
申请人： Shalom Manor , Moshe Bar-Guri , Amiad Alexandron , Moshe Kreisel
发明人： Shalom Manor , Moshe Bar-Guri , Amiad Alexandron , Moshe Kreisel
IPC分类号： C01B7/03 , C01D9/04
CPC分类号： C01D9/04 , C01B7/035
摘要： The present invention relates to a process for the manufacture of potassium nitrate with co-production of relatively concentrated aqueous solution of hydrochloric acid.According to the invention, potassium chloride and nitric acid are reacted in the medium of an organic solvent selected from butanols and pentanols. The solution obtained after the separation of the resulting potassium nitrate, containing hydrochloric acid together with nitric acid and said organic solvent, is subsequently washed thus resulting an aqueous solution of hydrochloric acid which contains nitric acid. The nitric acid is extracted by an organic solvent selected from organic esters of phosphoric acid, ketones having five to ten carbon atoms and straight or cyclic polyethers having molecular weight in the range of 100 to 1000 and polyalkylene glycols which are slightly miscible in water and having molecular weight in the range of 1000 to 3000, or mixtures thereof, preferably in the presence of an organic diluent. The remaining brine consists of a substantially nitrate-free hydrochloric acid. The NO.sub.3.sup.- -loaded solvent is washed, the nitric acid as well as the organic solvent being respectively recycled in the process.The process saves appreciable amounts of nitric acid, co-producing hydrochloric acid which can be utilized without any further concentrating step.
摘要翻译：本发明涉及一种相对浓缩的盐酸水溶液共同生产硝酸钾的方法。根据本发明，氯化钾和硝酸在选自丁醇和戊醇的有机溶剂的介质中反应。随后将所得到的含有盐酸的硝酸钾与硝酸和所述有机溶剂分离后得到的溶液洗涤，得到含有硝酸的盐酸水溶液。硝酸通过选自磷酸的有机酯，具有5-10个碳原子的有机酯和分子量为100-1000的直链或环状聚醚的有机溶剂萃取，和在水中稍微混溶的聚亚烷基二醇，分子量在1000至3000范围内，或其混合物，优选在有机稀释剂存在下。剩余的盐水由基本上不含硝酸盐的盐酸组成。洗涤含NO3的溶剂，硝酸和有机溶剂分别在该过程中循环使用。该方法可节省可观量的硝酸，共同生产盐酸，无需任何进一步的浓缩步骤即可使用。

2. 发明授权

US4378342A Process for the manufacture of potassium nitrate 失效
标题翻译：制造硝酸钾的方法
公开(公告)号：US4378342A
公开(公告)日：1983-03-29
申请号：US249355
申请日：1981-03-31
申请人： Shalom Manor , Moshe Bar-Guri , Amiad Alexandron , Moshe Kreisel
发明人： Shalom Manor , Moshe Bar-Guri , Amiad Alexandron , Moshe Kreisel
IPC分类号： C01B7/03 , C01B7/01 , C01B9/04 , C01B21/46 , C01D9/04
CPC分类号： C01D9/04
摘要： The present invention relates to a process for the manufacture of potassium nitrate from potassium chloride and nitric acid. According to the invention, potassium chloride and nitric acid are reacted in an aqueous medium at a temperature in the range of between -25.degree. C. to +10.degree. C. From the brine solution obtained after the separation of the resulting potassium nitrate, nitric acid is extracted by an organic solvent solution containing at least one compound selected from the group consisting of ketones having five to ten carbon atoms, straight or cyclic polyethers having molecular weight in the range of 100 to 1000, polyalkylene glycols slightly miscible in water and having molecular weight in the range of 1000 to 3000, and organic esters of phosphoric acid, phosphonic acid and phosphinic acid, or mixtures thereof, in an organic diluent which does not substantially extract hydrochloric acid. The remaining aqueous solution consists of a substantially nitrate-free brine containing hydrochloric acid. The NO.sub.3.sup.- -loaded solvent is washed, the nitric acid as well as the organic solvent being respectively recycled in the process. The process saves appreciable amounts of nitric acid. Optionally, pure hydrochloric acid could be obtained from the nitrate-free brine, by distillation or by solvent extraction using butanols or pentanols as extractants.
摘要翻译：本发明涉及从氯化钾和硝酸制造硝酸钾的方法。根据本发明，氯化钾和硝酸在水介质中在-25℃至+ 10℃的温度下反应。从分离所得硝酸钾后得到的盐水溶液中，加入硝酸酸是通过含有至少一种选自具有5-10个碳原子的化合物的化合物的有机溶剂溶液，分子量为100-1000的直链或环状聚醚，在水中稍混溶的聚亚烷基二醇，分子量在1000至3000范围内，以及磷酸，膦酸和次膦酸的有机酯或其混合物，基本上不提取盐酸的有机稀释剂中。剩余的水溶液由含有盐酸的基本上不含硝酸盐的盐水组成。洗涤含NO3的溶剂，硝酸和有机溶剂分别在该过程中循环使用。该方法可节省可观量的硝酸。任选地，可以通过蒸馏或通过使用丁醇或戊醇作为萃取剂的溶剂萃取从无硝酸盐的盐水中获得纯盐酸。

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