Patent ID: 8329975

Claim:
A process for increasing the yields of normal paraffins in an adsorption separation system, comprising: passing a feedstream comprising a mixture of paraffins through a first port, wherein the normal paraffins in the mixture are preferentially adsorbed by the adsorbent and where the non-normal paraffins remain in the fluid phase, and where the adsorbent is divided into a plurality of adsorbent bed zones that are serially connected through fluid connections, and where each adsorbent bed has a fluid inlet and a fluid outlet; withdrawing a raffinate stream comprising non-normal paraffins through a second port; passing a desorbent stream comprising a desorbent through a third port; withdrawing an extract stream comprising normal paraffins through a fourth port; passing a tertiary flush stream through a fifth port; and withdrawing the tertiary flush stream through a sixth port; wherein each of the streams are passed through different transfer lines in fluid communication with the ports and are directed through a channel in a rotary valve.