US 12,134,741 B2
Methods for integrated separation of dienes
Ernesto Uehara, Riyadh (SA); Mohammed Al-Ghamdi, Jubail (SA); and Vivek Singh Solanki, Jubail (SA)
Assigned to SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom (NL)
Appl. No. 17/777,489
Filed by SABIC Global Technologies B.V., Bergen op Zoom (NL)
PCT Filed Sep. 23, 2020, PCT No. PCT/IB2020/058878
§ 371(c)(1), (2) Date May 17, 2022,
PCT Pub. No. WO2021/099856, PCT Pub. Date May 27, 2021.
Claims priority of provisional application 62/937,096, filed on Nov. 18, 2019.
Prior Publication US 2023/0357653 A1, Nov. 9, 2023
Int. Cl. C07C 7/04 (2006.01); C07C 2/42 (2006.01); C07C 4/22 (2006.01); C07C 5/03 (2006.01); C10G 7/06 (2006.01); C10G 69/12 (2006.01)
CPC C10G 69/126 (2013.01) [C07C 2/42 (2013.01); C07C 4/22 (2013.01); C07C 5/03 (2013.01); C07C 7/04 (2013.01); C10G 7/06 (2013.01); C10G 2300/1003 (2013.01); C10G 2400/22 (2013.01); C10G 2400/30 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method of processing a hydrocarbon stream, the method comprising:
(a1) separating a pygas into a C4-C5 stream and a C6-C9+ stream comprising C6+ hydrocarbons
(a2) separating the C4-C5 stream to produce a C4 stream comprising C4 hydrocarbons and a C5 stream comprising C5 hydrocarbons;
(b) processing the C5 stream in a dimerization unit under reaction conditions sufficient to dimerize cyclopentadiene of the C5 stream and form a reactor product stream comprising dicyclopentadiene and C5 hydrocarbons; and
(c) separating the reactor product stream to produce a top product stream comprising C5 hydrocarbons and a bottom product stream comprising dicyclopentadiene, and
(g) monomerizing the dicyclopentadiene of the bottom product stream in a reactive distillation column to produce a cyclopentadiene stream comprising at least 99 wt. % cyclopentadiene.