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    • 3. 发明授权
    • Method of recovering iodine
    • 回收碘的方法
    • US5356611A
    • 1994-10-18
    • US144515
    • 1993-11-02
    • Ralf HerkelmannWerner RudolphDirk Seffer
    • Ralf HerkelmannWerner RudolphDirk Seffer
    • B01J41/04C01B7/14
    • C01B7/14
    • A method for recovering iodine from a composition containing iodine and/or iodide in which any iodine present is first reduced to iodide, the iodide is then separated from solution by selective anion exchange absorption, the separated iodide is eluted from the exchanger, the iodide-containing eluate solution is treated with a cation exchanger, H.sub.2 O.sub.2 and H.sub.2 SO.sub.4 are then added to the remaining solution, and the resulting iodine is precipitated and may be separated out in crystalline form. The method is also particularly suitable for separating iodine from solutions which contain organic constituents such as nitrogen-containing organic compounds.
    • 从含有碘和/或碘化物的组合物中回收碘的方法,其中首先将存在碘的碘还原成碘,然后通过选择性阴离子交换吸收将碘离子与溶液分离,从交换器洗脱分离的碘化物, 用阳离子交换剂处理含有洗脱液的溶液,然后将H 2 O 2和H 2 SO 4加入到剩余的溶液中,所得碘沉淀并且可以以结晶形式分离出来。 该方法还特别适用于从含有有机成分如含氮有机化合物的溶液中分离碘。