公开(公告)号：US3726937A

公开(公告)日：1973-04-10

申请号：US3726937D

申请日：1970-11-18

申请人： STEPANOV G ,  TURIAN Y ,  BUSHIN A ,  SHISHKINA I ,  EMELYANOVA E ,  RASTVOROV J ,  SHERASHOV V ,  BURALKOV V ,  KOLPAKOV V ,  BARANOVA P ,  KOLOBIKHIN V ,  KIRNOS Y

发明人： TURIAN Y ,  KIRNOS Y ,  KOLOBIKHIN V ,  BARANOVA P ,  KOLPAKOV V ,  BURALKOV V ,  SHERASHOV V ,  RASTVOROV J ,  EMELYANOVA E ,  SHISHKINA I ,  STEPANOV G ,  BUSHIN A

IPC分类号： C01B7/13 ,  C07C5/44 ,  C07C5/20

CPC分类号： C07C5/44 ,  C01B7/13 ,  Y10S585/90

摘要： A process for the recovery of iodine from the products of iodative dehydrogenation of hydrocarbons containing iodine and hydrogen iodide which consists in processing said products of dehydrogenation of hydrocarbons with an aqueous solution of sodium hydroxide, sodium carbonate or a mixture thereof until a weakly alkaline solution of iodine salts (pH 8 -10), containing iodide and iodate, is obtained. Said solution of iodine salts is electrolyzed to separately obtain the solutions of iodine and alkali, which contain undecomposed salts of iodine as well. The solution of alkali is recycled to the stage for alkali treatment of dehydrogenation products. Iodine is blown off from its solution by oxygen, an oxygen-containing gas or a mixture thereof with steam and recycled to the stage of dehydrogenation of hydrocarbons, and the solution of iodine salts free of iodine is recycled to the stage for alkali treatment of dehydrogenation products. The process is continuous. It enables complete recovery of iodine (up to 99.7 -99.9 percent), makes it possible to eliminate the formation of waste and crystalline iodine during the process as well as corrosive medium and dangerously explosive compounds.

摘要翻译： 一种从含有碘和碘化氢的烃的碘脱氢产物中回收碘的方法，其中包括用氢氧化钠，碳酸钠或其混合物的水溶液处理所述烃的脱氢产物，直到其中的弱碱性溶液 得到含有碘化物和碘酸盐的碘盐（pH = 8-10）。 所述碘盐溶液经电解，分别得到碘和碱的溶液，其中还含有未分解的碘盐。 将碱的溶液再循环到脱氢产物的碱处理阶段。 碘由氧气，含氧气体或与蒸汽的混合物从其溶液中吹出，再循环到烃脱氢阶段，将碘盐不含碘溶液循环回到脱氢碱处理阶段 产品。