US 12,227,704 B2
Processes for producing petrochemical products from crude oil
Md Ashraful Islam, Dhahran (SA); Gopal Juttu, Dhahran (SA); and Abdennour Bourane, Dhahran (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Nov. 3, 2022, as Appl. No. 18/052,308.
Prior Publication US 2024/0150663 A1, May 9, 2024
Int. Cl. C10G 51/06 (2006.01)
CPC C10G 51/06 (2013.01) [C10G 2300/1033 (2013.01); C10G 2300/4006 (2013.01); C10G 2300/4012 (2013.01); C10G 2400/20 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A process for producing petrochemical products from crude oil, the process comprising:
separating the crude oil into at least a lesser boiling point fraction and a greater boiling point fraction;
passing the lesser boiling point fraction and the greater boiling point fraction to a reactor system, the reactor system comprising a riser section and a downer section, wherein:
the reactor system comprises a first substantially prism-shaped wall arranged around a central axis, the central axis oriented in a substantially vertical direction;
the reactor system comprises a second substantially prism-shaped wall arranged around the central axis, a cross section of the second substantially prism-shaped wall surrounds the cross-section of the first substantially prism-shaped wall in a plane perpendicular to the central axis;
an outer boundary of the downer section is defined by the first substantially prism-shaped wall in the plane perpendicular to the central axis;
outer boundaries of the riser section are defined by the first substantially prism-shaped wall and the second substantially prism-shaped wall in the plane perpendicular to the central axis;
cracking the lesser boiling point fraction in the riser section in the presence of a catalyst to produce a first cracking reaction product, wherein the catalyst and the lesser boiling point fraction move co-currently and in a generally upwards direction through the riser section;
separating at least a portion of the first cracking reaction product from the catalyst such that a first cracking reaction product stream is passed out of the reactor system and the catalyst is passed to the downer section;
cracking the greater boiling point fraction in the downer reactor in the presence of the catalyst to produce a second cracking reaction product, wherein the catalyst and the greater boiling point fraction move co-currently in a generally downward direction through the downer section; and
passing the catalyst from the riser reactor to the downer reactor, from the downer reactor to a regenerator, and from the regenerator to the riser reactor, wherein an amount of coke on the catalyst is reduced in the regenerator.