PARAMETRIC PUMPING - SEPARATIONS VIA DIRECT THERMAL MODE

A computational investigation of separations by direct thermal mode, liquid phase parametric pumping is presented. Calculations are performed using the new STOP-GO algorithm, a modification of the method of characteristics. Using the toluene-heptane-silica gel system, we have determined the effect of displacement, cycle time, phase angle, and reservoir volume on separations. Separation factor increases exponentially with number of cycles, and in the case of equilibrium operation, there is almost no limit to separation capability. We have simulated experimental separations presented previously by the authors. A graphical calculation procedure also is presented for equilibrium operation. © 1969, American Chemical Society. All rights reserved.