振动规整填料萃取塔的性能测定

采用磷酸三丁酯-煤油-醋酸-水物系测试了振动规整填料萃取塔的传质性能。考察了规整填料的安装方式、连续相和分散相流速对分散相存留分数和传质效率的影响。实验结果表明,在不分段、分段Ⅰ(盘间距50mm)和分段Ⅱ(盘间距100mm)这3种规整填料安装方式中,综合考虑分散相存留分数和传质效率,分段Ⅰ比较具有优势;当两相流速都较小时,振动规整填料萃取塔的分散相存留分数比振动筛板萃取塔平均高30%左右;在相同的操作条件下,振动规整填料萃取塔的表观传质单元高度比振动筛板萃取塔平均低18%左右。

Performance Measurement of Reciprocating Structured Packing Extraction Column

Mass transfer efficiency of reciprocating structured packing extraction column was measured by tributylphosphate-kerosene-acetic acid-water system.Influences of packing installation mode and flow rates of both dispersed phase and continuous phase on holdup of the dispersed phase and mass transfer efficiency of the column were investigated.Among the three packing installation modes,namely non-segmented,segmented Ⅰ(space between two packings 50 mm) and segmented Ⅱ(space between two packings 100 mm),installation mode of segmented Ⅰ was the best in the performance considering both dispersed phase holdup and mass transfer efficiency.When the both phase flow rates were small,dispersed phase holdup of reciprocating structured packing extraction column was 30% higher than that of reciprocating sieve plate extraction column.Under the same operating conditions,apparent height of mass transfer unit of reciprocating structured packing extraction column was 18% lower than that of reciprocating sieve plate extraction column.