The hydraulic and mass transfer characteristics of a new type DFG oriented grid structured packing in a 100 mm diameter extraction column were studied. MIBK (methyl isobutyl ketone) and DIPE (diisopropyl ether) were selected as extractants, which were widely used in solvent extraction for coal chemical industry wastewater phenols removal. Result indicated that the hydraulic of the two extraction systems can be well described by an improved correlation; compared to the traditional packing, the extraction column with DFG structured packing can greatly improve the operation loadings. Within the experiment range, the max flooding loading is as high as 150 m3/(m2·h). The mass transfer performance is similar to traditional structured packing, the height equivalent to theoretical stage (He) is between 2.2 and 3.1 m. The DFG structured packing holds good integrated performances, which can meet the need of high throughput phenol removal extractors for the increasing large-scaled coal chemical industry.
