Research Progress in Pulse Extraction Column  

作　　者：ZHANG Bai-qing 

出　　处：《Annual Report of China Institute of Atomic Energy》2007年第1期186-186,共1页中国原子能科学研究院年报（英文版）

摘　　要：HETS or HTU is reduced a lot, and the mass transfer efficiency is higher in pulsed extraction column (PEC) than in common extraction column driven only by gravity, because pulse can improveHETS or HTU is reduced a lot, and the mass transfer efficiency is higher in pulsed extraction column （PEC） than in common extraction column driven only by gravity, because pulse can improve the performance significantly in normal packed column and sieve plate column. The rapid reciprocating pulsation of the fluid in column can not only crush droplets leading to more contact area between two phase, but also increase fluid turbulence and improve two-phase contact. At the same time, there are not moving parts and bearings in a pulse stirring column, so it has a lot of advantages in dealing with corrosion-strong radioactive materials. PEC has a wide range of applications in the spent fuel reprocessing already. PEC is prospective in future.

关 键 词：核燃料 回收方法 脉冲萃取 重力 

分 类 号：TL24[核科学技术—核燃料循环与材料]