Inventors:
Gregory R. Werba - Arlington Heights IL, US
Xin X. Zhu - Long Grove IL, US
Phillip F. Daly - Palatine IL, US
Saadet Ulas Acikgoz - Des Plaines IL, US
Jason T. Corradi - Arlington Heights IL, US
David W. Ablin - Arlington Heights IL, US
International Classification:
C07C 7/04
C07C 7/12
C07C 15/08
B01D 3/14
US Classification:
585478, 203 25, 203 27, 203 75, 203 77, 203 78, 203 80, 203 82, 203 84, 203DIG 8, 585805, 585822, 585828, 585910
Abstract:
An aromatics complex producing one or more xylene isomers offers a large number of opportunities to conserve energy by heat exchange within the complex. One previously unrecognized opportunity is through providing two parallel distillation columns operating at different pressures to separate Caromatics from C+ aromatics. The parallel columns offer additional opportunities to conserve energy within the complex through heat exchange in associated xylene recovery facilities.