METHODS AND SYSTEMS FOR SEPARATING PARA-XYLENE USING A RADIAL FLOW SIMULATED MOVING BED CHAMBER

摘要

Methods and systems for separating para-xylene are disclosed. In one exemplary embodiment, a method for separating para-xylene includes the steps of providing a feed stream including para-xylene and other C8 aromatic hydrocarbons to a first adsorbent bed within a radial flow simulated moving bed chamber and providing a desorbent stream to a second bed within the radial flow simulated moving bed chamber. The method further includes circulating the feed stream and the desorbent stream radially within the radial flow simulated moving bed chamber to third and fourth beds within the radial flow simulated moving bed chamber. Still further, the method includes withdrawing an extract stream including the para-xylene from the third bed and withdrawing a raffinate stream including the other C8 aromatic hydrocarbons from the fourth bed.

主权项

1. A method for separating para-xylene comprising the steps of:
providing a feed stream comprising para-xylene and other C8 aromatic hydrocarbons to a first adsorbent bed within a radial flow simulated moving bed chamber; providing a desorbent stream comprising a desorbent material to a second bed within the radial flow simulated moving bed chamber; circulating the feed stream and the desorbent stream radially within the radial flow simulated moving bed chamber to third and fourth beds within the radial flow simulated moving bed chamber; withdrawing an extract stream comprising the para-xylene and desorbent material from the third bed; and withdrawing a raffinate stream comprising the other C8 aromatic hydrocarbons and desorbent material from the fourth bed.