US 12,187,967 B2
Processes and systems for quenching pyrolysis effluents
Reyyan Koc-Karabocek, Kingwood, TX (US); James R. Lattner, La Porte, TX (US); William A. Aslaner, League City, TX (US); David Spicer, Houston, TX (US); and Mark A. Rooney, Pasadena, TX (US)
Assigned to ExxonMobil Chemical Patents Inc., Baytown, TX (US)
Appl. No. 17/768,663
Filed by ExxonMobil Chemical Patents Inc., Baytown, TX (US)
PCT Filed Sep. 16, 2020, PCT No. PCT/US2020/051090
§ 371(c)(1), (2) Date Apr. 13, 2022,
PCT Pub. No. WO2021/086509, PCT Pub. Date May 6, 2021.
Claims priority of provisional application 62/929,326, filed on Nov. 1, 2019.
Claims priority of application No. 20151752 (EP), filed on Jan. 14, 2020.
Prior Publication US 2024/0110110 A1, Apr. 4, 2024
Int. Cl. C10G 70/04 (2006.01); C10G 69/06 (2006.01)
CPC C10G 70/04 (2013.01) [C10G 69/06 (2013.01); C10G 2300/202 (2013.01); C10G 2300/308 (2013.01); C10G 2300/4006 (2013.01); C10G 2300/4081 (2013.01); C10G 2400/20 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A process for quenching an effluent, comprising:
(I) contacting a pyrolysis effluent and a first quench medium to produce a first quenched effluent;
(II) indirectly transferring heat from the first quenched effluent to a second quench medium to produce a second quenched effluent and a heated second quench medium; and
(III) obtaining from the second quenched effluent a bottoms stream comprising tar and an overhead stream comprising ethylene and propylene, wherein the first quench medium comprises a first portion of the bottoms stream comprising a first portion of the tar.