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1.发明授权PROCESS AND APPARATUS FOR THE PRODUCTION OF CALCIUM BROMIDE BY LIQUID-LIQUID EXTRACTION 有权方法和制造装置中的钙通过液 - 液萃取
公开(公告)号：EP1414748B1
公开(公告)日：2011-10-19
申请号：EP02700548.7
申请日：2002-02-21
发明人： GRINBAUM, Baruch , KOGAN, Leni , BARNEA, Eli , HAREL, Gideon , SEMIAT, Rafael , WAHRMANN, Samuel
IPC分类号： C01F11/00
摘要： A process for the production of calcium bromide from feed brines, particularly from Dead Sea End Brine (EB), is described. The process comprises extracting the feed brine in countercurrent with a composite organic solvent; optionally, purifying the extract to increase the ratio Br:Cl by contacting it with a part of the product; and washing the purified extract with water to yield the product, that is an aqueous solution of CaBr2. The composite solvent comprises an anionic extractant, such as an amine or a mixture of amines; a cationic extractant, such as a carboxylic phosphoric or sulphonic acid or a mixtures of said acids; and diluent/modifier, which is an organic solvent. An apparatus for the production of calcium bromide is also described, which comprises: an extraction battery; optionally, a purification battery; and a washing battery, wherein at least one of the batteries comprises a plurality of stages.
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2.发明公开PROCESS AND APPARATUS FOR THE PRODUCTION OF CALCIUM BROMIDE BY LIQUID-LIQUID EXTRACTION 有权方法和制造装置中的钙通过液 - 液萃取
公开(公告)号：EP1414748A2
公开(公告)日：2004-05-06
申请号：EP02700548.7
申请日：2002-02-21
发明人： GRINBAUM, Baruch , KOGAN, Leni , BARNEA, Eli , HAREL, Gideon , SEMIAT, Rafael , WAHRMANN, Samuel
IPC分类号： C01F11/00
摘要： A process for the production of calcium bromide from feed brines, particularly from Dead Sea End Brine (EB), is described. The process comprises extracting the feed brine in countercurrent with a composite organic solvent; optionally, purifying the extract to increase the ratio Br:Cl by contacting it with a part of the product; and washing the purified extract with water to yield the product, that is an aqueous solution of CaBr2. The composite solvent comprises an anionic extractant, such as an amine or a mixture of amines; a cationic extractant, such as a carboxylic phosphoric or sulphonic acid or a mixtures of said acids; and diluent/modifier, which is an organic solvent. An apparatus for the production of calcium bromide is also described, which comprises: an extraction battery; optionally, a purification battery; and a washing battery, wherein at least one of the batteries comprises a plurality of stages.
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