Equipment Introduction
Rotary Disc Extraction Column (RDC) is a type of mechanically stirred extraction column. Its mixing unit consists of a moving ring and a stationary ring. Like other extraction columns, during operation, the light and heavy phases enter the rotating disc from the bottom and top of the column, respectively. Inside the column, the two phases come into countercurrent contact. Under the action of the rotating disc, the dispersed phase forms small droplets, increasing the mass transfer area between the two phases. The light and heavy phases, having completed the extraction process, then flow out from the top and bottom of the column, respectively.
RDC can be used for all liquid-liquid extraction processes, especially those where the two phases must flow countercurrently or concurrently. The system may contain a small amount of suspended solids. In principle, RDC can also be used for stepwise chemical reactions with or without mass transfer.
Schematic diagram of rotary disc extraction column structure
Notes
- Tower diameter and height can be customized according to requirements;
- Commonly used materials include PMMA, transparent PVC, high borosilicate glass, stainless steel, PP, PPH, etc.
