Jason Ja Gee

US Patent:

20180215684, Aug 2, 2018

Filed:

Jul 29, 2016

Appl. No.:

15/747951

Inventors:

- Baytown TX, US
- Atlanta GA, US
Dana L. PILLIOD - League City TX, US
Robert G. TINGER - Friendswood TX, US
Anthony GO - Houston TX, US
Ke ZHANG - Medford MA, US
Sankar NAIR - Atlanta GA, US
Jason GEE - Houston TX, US
David SHOLL - Marietta GA, US

International Classification:

C07C 7/12
C07C 7/00
C07C 7/04
C07C 5/27
B01D 15/18
B01D 3/14

Abstract:

Para-xylene is separated from a mixture of C8 aromatics using a simulated moving bed (SMB) adsorption process, wherein a MOF is used as an adsorbent and an alkane or alkene having 7 or less carbon atoms, such as hexane or heptane is used as desorbent. Because of the difference in boiling points of a hexane or heptane desorbent as compared to conventional desorbents such as toluene or para-diethylbenzene, less energy is required to separate hexane or heptane from C8 aromatics by distillation than the energy required to separate toluene or diethylbenzene from C8 aromatics by distillation.