US 11,746,297 B2
Circular chemicals or polymers from pyrolyzed plastic waste and the use of mass balance accounting to allow for crediting the resultant products as circular
Ronald G. Abbott, Kingwood, TX (US); Scott G. Morrison, Kingwood, TX (US); Steven R. Horlacher, League City, TX (US); Jamie N. Sutherland, Kingwood, TX (US); Bruce D. Murray, Kingwood, TX (US); Jacob M. Hilbrich, Cleveland, TX (US); and Charles T. Polito, Humble, TX (US)
Assigned to Chevron Phillips Chemical Company LP, The Woodlands, TX (US)
Filed by Chevron Phillips Chemical Company LP, The Woodlands, TX (US)
Filed on Feb. 23, 2023, as Appl. No. 18/173,196.
Application 18/173,196 is a continuation of application No. 17/934,619, filed on Sep. 23, 2022, granted, now 11,618,855.
Application 17/934,619 is a continuation of application No. 17/487,714, filed on Sep. 28, 2021, granted, now 11,479,726, issued on Oct. 25, 2022.
Claims priority of provisional application 63/084,311, filed on Sep. 28, 2020.
Prior Publication US 2023/0220282 A1, Jul. 13, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C10B 53/07 (2006.01); C10G 45/26 (2006.01); C10G 45/50 (2006.01); C10G 51/02 (2006.01); C10G 57/02 (2006.01)
CPC C10B 53/07 (2013.01) [C10G 45/26 (2013.01); C10G 45/50 (2013.01); C10G 51/023 (2013.01); C10G 57/02 (2013.01); C10G 2300/1003 (2013.01); C10G 2400/04 (2013.01); C10G 2400/06 (2013.01); C10G 2400/20 (2013.01); C10G 2400/22 (2013.01); C10G 2400/28 (2013.01); C10G 2400/30 (2013.01)] 44 Claims
OG exemplary drawing
 
1. A process for producing chemicals or polymers from plastic waste, the process comprising:
(a) providing a pyrolysis oil from plastic waste, wherein the pyrolysis oil comprises C2-C5 hydrocarbons and C6+ hydrocarbons;
(b) separating at least a portion of the pyrolysis oil into a pyrolysis gas stream comprising the C2-C5 hydrocarbons and a pyrolysis liquid stream comprising the C6+ hydrocarbons;
(c) providing a co-feed comprising independently a petroleum-based feed, a fossil fuel-based feed, or a bio-based feed;
(d) feeding an NGL unit feed comprising at least a portion of the pyrolysis gas stream and the co-feed to a Natural Gas Liquids (NGL) unit to provide an NGL unit output stream comprising at least one circular product, wherein a fraction of the circular product in the NGL unit output stream which is attributable to the pyrolysis oil or plastic waste is determined by mass balance;
(e) feeding a reforming unit feed comprising at least a portion of the pyrolysis liquid stream and the co-feed to a reforming unit to provide a reforming unit output stream comprising at least one circular product, wherein a fraction of the circular product in the reforming output stream which is attributable to the pyrolysis oil or plastic waste is determined by mass balance; and
(f) processing at least a portion of the NGL unit output stream in a steam cracker as a steam cracker feed to provide a steam cracker output stream comprising at least one circular product, wherein a fraction of the circular product in the steam cracker output stream which is attributable to the pyrolysis oil or plastic waste is determined by mass balance.