Chemistry of hydrocarbon compounds – Purification – separation – or recovery – By contact with solid sorbent
Reexamination Certificate
2008-07-29
2010-11-23
Nguyen, Tam M (Department: 1797)
Chemistry of hydrocarbon compounds
Purification, separation, or recovery
By contact with solid sorbent
C585S820000, C585S825000, C585S826000, C585S827000
Reexamination Certificate
active
07838714
ABSTRACT:
Process for separation of metaxylene, with at least 99% by weight of purity of an aromatic feedstock F, in a single adsorption stage in a simulated moving bed in an SMB device that comprises 12, 13 or 15 adsorbent beds with different numbers of beds being employed in zone 1 between the supply of the desorbent D and the draw-off of the extract E; zone 2 between the draw-off of the extract E and the supply of the feedstock F; zone 3 between the supply of the feedstock and the draw-off of the raffinate R; and zone 4 between the draw-off of the raffinate R and the supply of the desorbent D whereby the process is carried out according to a configuration of zones (a, b, c, d), whereby a, b, c, and d represent the number of adsorbent beds that operate respectively in zones 1, 2, 3, 4 in which there is used:Either an SMB of 12 adsorbent beds operating according to the configuration (2, 5, 3, 2),Or an SMB of 13 adsorbent beds operating according to the configuration (2, 5, 4, 2),Or an SMB of 15 adsorbent beds operating according to the configuration (2, 6, 4, 3).
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Leflaive Philibert
Leinekugel Le Cocq Damien
Wolff Luc
IFP Energies Nouvelles
Millen White Zelano & Branigan P.C.
Nguyen Tam M
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