US 12,264,123 B2
Method of producing a fuel additive
Guillermo Leal, Riyadh (SA); Naif Mohammed Al-Naddah Al-Otaibi, Riyadh (SA); Kareemuddin Mahaboob Shaik, Dhahran (SA); Mohammed Bismillah Ansari, Riyadh (SA); and Vijay Dinkar Bodas, Riyadh (SA)
Assigned to SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom (NL); and SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Appl. No. 17/436,753
Filed by SABIC Global Technologies B.V., Bergen op Zoom (NL); and Saudi Arabian Oil Company, Dhahran (SA)
PCT Filed Mar. 5, 2020, PCT No. PCT/IB2020/051908
§ 371(c)(1), (2) Date Sep. 7, 2021,
PCT Pub. No. WO2020/183302, PCT Pub. Date Sep. 17, 2020.
Claims priority of provisional application 62/815,512, filed on Mar. 8, 2019.
Prior Publication US 2022/0185750 A1, Jun. 16, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C07C 29/04 (2006.01); B01D 3/00 (2006.01); C07C 4/06 (2006.01); C07C 5/03 (2006.01); C07C 5/05 (2006.01); C07C 7/00 (2006.01); C07C 7/04 (2006.01); C10L 1/02 (2006.01); C10L 1/182 (2006.01)
CPC C07C 29/04 (2013.01) [B01D 3/009 (2013.01); C07C 4/06 (2013.01); C07C 5/03 (2013.01); C07C 5/05 (2013.01); C07C 7/005 (2013.01); C07C 7/04 (2013.01); C10L 1/02 (2013.01); C10L 1/1824 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of producing a fuel additive, comprising:
passing a feed stream comprising C4 hydrocarbons through a first hydrogenation unit producing a first process stream;
passing the first process stream through a distillation unit;
withdrawing a 2-butene stream from the distillation unit;
passing the 2-butene stream through a second hydrogenation unit producing a 1-butene stream;
passing at least a portion of the 1-butene stream produced in the second hydrogenation unit through a separation unit producing a separated 1-butene stream; and
passing the separated 1-butene stream produced in the separation unit through a hydration unit producing the fuel additive,
wherein
the distillation unit comprises a kinetic distillation column,
the method further comprises withdrawing an iso-stream from the distillation unit, passing a raw material stream comprising hydrocarbons through a hydrocarbon cracking unit, withdrawing the feed stream from the cracking unit, and recycling the iso-stream back to the raw material stream, wherein the iso-stream comprises isobutane and isobutylene, and wherein the iso-stream comprises greater than or equal to 90% by weight isobutane and/or isobutylene, based on the total weight of the iso-stream,
the method further comprises withdrawing an iso-stream from the distillation unit, and passing the iso-stream through a propylene and/or ethylene cracking unit, wherein the iso-stream comprises isobutane and isobutylene, and wherein the iso-stream comprises greater than or equal to 90% by weight isobutane and/or isobutylene, based on the total weight of the iso-stream, or
the method further comprises withdrawing a butane stream comprising n-butane and/or isobutane from the separation unit and passing the butane stream through a propylene and/or ethylene cracking unit.