脉冲筛板柱萃取分离钍鈾的研究(Ⅰ)——钍铀分离脉冲筛板柱的流体力学性能  

STUDY OF THE THORIUM-URANIUM SEPARATION PROCESS IN PULSED SIEVE-PLATE COLUMNS(Ⅰ)——HYDRODYNAMIC BEHAVIOUR OF PULSED SIEVE-PLATE COLUMNS IN THE THORIUM-URANIUM SEPARATION PROCESS

作　　者：仝继红[1] 安延军[1] 马栩泉[1] 邰德荣[1] 

机构地区：[1]清华大学核能技术设计研究院

出　　处：《核科学与工程》1992年第3期235-242,6,共8页Nuclear Science and Engineering

摘　　要：在2英寸脉冲筛板柱中,结合钍铀分离的Thorex过程,研究了30％TBP-煤油/水和30％TBP-煤油/Th(NO_3)_4-UO_2(NO_3)_2-HNO_3-H_2O体系脉冲筛板柱的流体力学性能。通过实验对液泛通量、分散相存留分数等流体力学参数,并用改进的Pratt公式对两相流体力学流体力学行为进行了关联,得到了较为满意的结果。通过对脉冲筛板柱流体力学性能的研究,获得了最优操作条件,为进一步的传质实验研究奠定了基础。Hydrodynamics behaviour of pulsed sieve-plate columns was studied in 2-inch pulsed sieve-plate columns with two systems—30％TBP(OK)/Th(NO_3)_4 UO_2(NO_3)_2 and 30％TBP(OK)/H_2O, under the condition of the Thorex Process. Flooding flow rate, hold-up and some other hydrodynamic parameters are presented. Experimental data are correlated with two kinds of modified Pratt's formulas. Computation between the calculated values of hold-up and the experimantal values show that the agreement for the values is fairly good, the mean relative deviation being<±5％. The study also gives the optimum operation conditions which is used in the mass-transfer experiments of the Thorex process.

关 键 词：脉冲筛板柱 钍 铀 萃取 分离 

分 类 号：TL243[核科学技术—核燃料循环与材料]