小型环隙式离心萃取器的水力学和传质研究
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摘要: 用单级＝１０ｍｍ小型环隙式离心萃取器研究了水－３０％ＴＲＰＯ－煤油体系在不同条件下的水力学特性和硝酸、Ｆｅ３＋和Ｎｄ３＋的传质特性。在转速４０００—４５００ｒ／ｍｉｎ、流量＜６００ｍＬ／ｈ、相比（ｏ／ａ）１／１０—１０／１情况下，硝酸和Ｎｄ３＋的传质级效率比较高，为９０％左右。由于Ｆｅ３＋的萃取动力学速率比较慢，因此其萃取级效率比较低。Abstract: STUDY ON THE PERFORMANCE OF THE HYDRAULIC AND MASSTRANSFER WITH MINIATURE CENTRIFUGAL CONTACTORWang Jiangchen Tang Wencheng Fan Shilei Lian Jun(Institute of Nuclear Energy Technology,Tsinghua University,P.O.Box1021,Beijing 102201)ABSTRACTThe hydraulic performance and the masstransfer properties of HNO3、Fe3＋、Nd3＋are studied in H2O30%TRPOkerosene system at different conditions with singlestage φ=10 mm miniature centrifugal contactor.The rotor′s speed varies from 4000 r/min to 4500 r/min.The total throughput is less than 600 mL/h.The phase ratio(o/a) changes from 1/10 to 10/1.Under the above experimental conditions,the single contactor operats very well and gives good performance.The stage efficiencies of HNO3 and Nd3＋ are about 90%.The Fe3＋ extraction is very slow kinetically and the stage efficiency of Fe3＋ is low.Key words Miniature centrifugal contactor Fe3＋ Nd3＋ Hydraulic masstransfer Extraction kinetics
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[1] １叶春林．圆筒式离心萃取器．北京：原子能出版社，１９８２．１．２王建晨，宋崇立．模拟高放废液介质中ＴＲＰＯ对Ａｍ的萃取研究．核化学与放射化学，１９９５，１７（３）：１．３李以圭，李洲，费维扬．液－液萃取过程和设备．北京：原子能出版社，１９８５．２７３．４张启卫，焦荣洲，宋崇立．三烷基氧膦（ＴＲＰＯ）对铁（Ⅲ）萃取性能的研究．中国核科技报告，ＣＮＩＣ－００８６７，ＴＳＨＯＮＥ－００７４，北京：原子能出版社．１９９５
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