Preparative Chromatography - Alternative Preparative Techniques > The Moving Bed Continuous Chromatography System > The Continuous Moving Bed Process for the Isolation of Pure Benzene from Coal Gas > Page 53

.

Now to separate solute (B) form (C) the following conditions must be met,

(6)

and (7)

Having established the down-flow of stationary phase the conditions defined in equations (6) and (7) must be met by adjustment of (QG(2)) and (T(2)). In a similar manner, using suitable restrictions, the pressures at the sample inlet and that of the outlet for solute (B) must be made equal (or close to equal) to reduce cross-flow.

Finally, solute (C) can be recovered under the following condition,

(8)

 

Courtesy of Benzole Producers Ltd. (ref.7)

 

Figure 27 The Extraction of Pure Benzene from Coal Gas by continuous Extraction Using a Moving Bed Technique