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 52

In section (1), solute (A) will be separated from solutes (B) and (C) when,

(3)

(4)

(5)

These conditions will ensure that solute (A) passes up the tower and solutes (B) and (C) pass down the tower.

Thus, the flow of stationary phase and support down the column carrying the sample into section (1) must be regulated so that at temperature (T(1)) the conditions defined in equations (3), (4) and (5) are met. In addition by employing suitable restrictions, the pressure at the top of the tower must be made equal or close to that of the outlet for solute (A) to prevent cross-flow.