US 11,964,926 B2
Ionic liquid alkylation of isobutane with ethylene to produce alkylate
Bong-Kyu Chang, Novato, CA (US); Hye-Kyung Cho Timken, Albany, CA (US); and Huping Luo, Moraga, CA (US)
Assigned to CHEVRON U.S.A. INC., San Ramon, CA (US)
Filed by CHEVRON U.S.A. INC., San Ramon, CA (US)
Filed on Sep. 28, 2022, as Appl. No. 17/954,420.
Claims priority of provisional application 63/289,685, filed on Dec. 15, 2021.
Prior Publication US 2023/0183151 A1, Jun. 15, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C07C 2/60 (2006.01); B01J 31/02 (2006.01); C07C 9/16 (2006.01); C10L 1/06 (2006.01)
CPC C07C 2/60 (2013.01) [B01J 31/0244 (2013.01); C07C 9/16 (2013.01); C10L 1/06 (2013.01); C07C 2531/02 (2013.01); C10L 2200/0423 (2013.01); C10L 2270/023 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An alkylation process comprising:
passing an isobutane feed and an ethylene feed to an alkylation reactor, wherein the alkylation reactor contains an ionic liquid catalyst, the ionic liquid comprising an organic cation and a halometallate anion, for reacting the isobutane and ethylene to generate an alkylate having a research octane number (RON) of 93 or more;
wherein the alkylation reactor is operated at reaction conditions including a temperature of from 30° C. to 100° C., a pressure of from 300 psig to 700 psig (2068 kPa to 4826 kPa), an overall isobutane to ethylene molar ratio from 2 to 20, and a residence time of from 5 minutes to 1 hour.