US 12,358,857 B2
Processes for producing high-octane-number fuel component
Robert G. Tinger, Friendswood, TX (US); Theophile E. Foyen, Seabrook, TX (US); Stephen J. Mokulis, Houston, TX (US); and Todd E. Detjen, Bellaire, TX (US)
Assigned to ExxonMobil Chemicals Patents Inc., Baytown, TX (US)
Appl. No. 18/004,123
Filed by ExxonMobil Chemical Patents Inc., Baytown, TX (US)
PCT Filed Jul. 6, 2021, PCT No. PCT/US2021/040453
§ 371(c)(1), (2) Date Jan. 3, 2023,
PCT Pub. No. WO2022/026129, PCT Pub. Date Feb. 3, 2022.
Claims priority of provisional application 63/059,483, filed on Jul. 31, 2020.
Prior Publication US 2023/0257329 A1, Aug. 17, 2023
Int. Cl. C07C 15/08 (2006.01); C10L 1/04 (2006.01); C10L 10/10 (2006.01)
CPC C07C 15/08 (2013.01) [C10L 1/04 (2013.01); C10L 10/10 (2013.01); C10L 2200/0423 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A process for producing a high-octane-number fuel component, the process comprising:
(I) providing a first C8+ hydrocarbon stream comprising p-xylene, o-xylene, m-xylene, and ethylbenzene;
(II) feeding the first C8+ hydrocarbon stream into a C8 splitter to obtain a first o-xylene-rich stream depleted in p-xylene and m-xylene, and a first o-xylene-depleted stream rich in p-xylene and m-xylene;
(III) feeding the first o-xylene-depleted stream to a p-xylene recovery sub-system, from which a p-xylene product stream rich in p-xylene and a raffinate stream depleted in p-xylene are obtained;
(IV) obtaining the high-octane-number fuel component from one or more of: at least a portion of the first o-xylene-depleted stream; at least a portion of the raffinate stream; and a mixture of at least a portion of the first o-xylene-depleted stream and at least a portion of the raffinate stream; and
(IV-a) abating at least a portion of the ethylbenzene from the high-octane-number fuel component comprising at least the portion of the first o-xylene-depleted stream, the raffinate stream, a mixture of the first o-xylene-depleted stream and the raffinate stream, or a combination thereof, to obtain an ethylbenzene-abated C8 stream.