RDC Series Extraction Column

Working Principle of RDC Extraction Column

RDC extraction column consists of three parts: the upper clarification area, the mixing area, and the bottom clarification area. The mixing area is cylindrical in shape, and the interior is divided into a series of extraction chambers by static ring baffles. There is a fixed turntable between the two static ring baffles and it rotates with the stirring shaft. When working, the heavy phase and the light phase enter from the top and bottom of the column respectively, and contact each other in countercurrent in the column. Under the stirring of the fixed turntable, small water droplets are dispersed to increase the mass transfer area. After the extraction process is completed, the light phase and the heavy phase flow out from the outlets at the top and bottom of the column respectively.

Characteristics of RDC Extraction Column

1.Less space demand, low maintenance cost.
2.Large handling capacity, suitable for continuous production.
3.High stage efficiency , less solvent hold up.

Technical Parameters

Model	Effective diameter of column	Effective height
RDC-50	50mm	1000mm
RDC-80	80mm	1000mm
RDC-100	100mm	1000/1500mm
RDC-130	130mm	1000/1500mm
RDC-150	150mm	1000/1500mm
RDC-200	200mm	designed as requirements

Application of Extraction Column

1. Chemical (Recovery of acetic acid from dilute solutions; Washing of acids/bases, polar compounds from organics ; Recovery of valuable chemicals from aqueous solutions:
2. Metals/mining (Copper production; Lithium extraction; Recovery of rare earth elements etc.)
3. Biochemical (Recovery of carboxylic acid from fermentation broths ; Recovery of valuable “oil” from algae broths)
4. Environment (Removal and recovery of phenol, DMF, DMAC ； Removal of nitrated organics ; Wastewater processing)
5. Inorganic Chemicals (Purification of phosphoric acid)