US 12,084,619 B2
Processes and systems for producing fuels and petrochemical feedstocks from a mixed plastics stream
Omer Refa Koseoglu, Dhahran (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Jan. 31, 2022, as Appl. No. 17/588,476.
Prior Publication US 2023/0242821 A1, Aug. 3, 2023
Int. Cl. C10G 1/10 (2006.01); B01J 8/18 (2006.01); B01J 8/24 (2006.01); C10G 1/00 (2006.01)
CPC C10G 1/10 (2013.01) [B01J 8/1845 (2013.01); B01J 8/1881 (2013.01); B01J 8/24 (2013.01); C10G 1/002 (2013.01); C10G 2300/1003 (2013.01); C10G 2300/201 (2013.01); C10G 2300/302 (2013.01); C10G 2300/308 (2013.01); C10G 2400/02 (2013.01); C10G 2400/04 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method of producing pyrolysis products from a mixed plastics stream, the method comprising:
(a) conducting pyrolysis of a plastic feedstock in a plastic pyrolysis unit to produce a stream of plastic pyrolysis oil, the plastic pyrolysis oil comprising at least one metallic constituent;
(b) feeding a catalytic cracking feed stream and a catalyst from a catalyst regenerator into a fluidized bed reactor, where the catalytic cracking feed stream comprises the plastic pyrolysis oil provided directly from the plastic pyrolysis unit without removing the at least one metallic constituent from the plastic pyrolysis oil;
(c) cracking the catalytic cracking feed stream in the fluidized bed reactor to produce a product stream and a spent catalyst; and
(d) transporting the spent catalyst to the catalyst regenerator and regenerating the catalyst in the catalyst regenerator;
where the product stream comprises olefins having a carbon number of C2-C4 and distillate fuel, and
where the plastic pyrolysis oil comprises a naphtha fraction representing hydrocarbons with boiling points from 36 to 180° C., a diesel fraction representing hydrocarbons with boiling points from 180 to 370° C., and a vacuum gas oil fraction representing hydrocarbons with boiling points greater than 370° ° C.