US 12,410,372 B2
Process scheme for maximum heavy oil conversion with stage asphaltene rejection
Vinod Ramaseshan, Dhahran (SA); Emad Al Subaie, Dhahran (SA); Hector Infante, Dhahran (SA); Jesse Williams, Dhahran (SA); Rustam Ismagilov, Dhahran (SA); Abdalaziz A. Al-Balawi, Dhahran (SA); and Ashok Kumar Choudhary, Dhahran (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Dec. 21, 2022, as Appl. No. 18/069,556.
Claims priority of provisional application 63/265,872, filed on Dec. 22, 2021.
Prior Publication US 2023/0193145 A1, Jun. 22, 2023
Int. Cl. C10G 67/04 (2006.01); C10C 3/04 (2006.01); C10C 3/08 (2006.01); C10C 3/14 (2006.01); C10G 7/06 (2006.01); C10G 21/00 (2006.01); C10G 47/00 (2006.01); C10G 49/00 (2006.01); C10G 67/16 (2006.01)
CPC C10G 67/049 (2013.01) [C10C 3/04 (2013.01); C10C 3/08 (2013.01); C10C 3/14 (2013.01); C10G 7/06 (2013.01); C10G 21/003 (2013.01); C10G 47/00 (2013.01); C10G 49/00 (2013.01); C10G 67/16 (2013.01); C10G 2300/1077 (2013.01); C10G 2300/301 (2013.01); C10G 2300/302 (2013.01); C10G 2300/44 (2013.01)] 33 Claims
OG exemplary drawing
 
1. A system to upgrade an input stream, comprising:
a vacuum column;
a hydrocracking unit coupled downstream of and in fluid communication with the vacuum column;
a high lift solvent deasphalting unit coupled downstream of and in fluid communication with the vacuum column;
a low lift solvent deasphalting unit coupled downstream of and in fluid communication with the vacuum column; and
a bitumen blowing unit coupled downstream of and in fluid communication with the vacuum column and the high lift solvent deasphalting unit,
where: the vacuum column is configured to receive an input stream of a straight run atmospheric residue or a cracked feedstock and to separate the input stream into a vacuum column light stream and a vacuum residue stream,
the hydrocracking unit is configured to receive a combined stream of the vacuum column light stream and a heavy deasphalted oil stream, as well as a hydrogen stream, and to pass a distillate and naphtha product, and a light ends product,
the heavy deasphalted oil stream is in fluid communication with the hydrocracking unit and also with the high lift solvent deasphalting unit,
the high lift solvent deasphalting unit is configured to receive a butane stream, as well as a combined stream of a first portion of the vacuum residue stream, a first portion of a hydrocracking bleed stream, and a heavy oil stream, and to pass an asphaltene-lean heavy deasphalted oil stream and an asphaltene-rich pitch stream, an unconverted oil stream is in fluid communication with the hydrocracking unit, the high lift solvent deasphalting unit, and the bitumen blowing unit,
the low lift solvent deasphalting unit is configured to receive a propane stream, as well as a second portion of the vacuum residue stream, and to pass a light deasphalted oil that is a lube base feed stock, and a heavy oil stream,
the heavy oil stream is in fluid communication with the high lift solvent deasphalting unit,
the bitumen blowing unit is configured to receive a combined stream of a second portion of the hydrocracking bleed stream, a remaining portion of the vacuum residue stream, and a low viscosity gas oil stream, and to pass a bitumen and asphalt stream,
the low viscosity gas oil stream is in fluid communication with the bitumen blowing unit, and
the vacuum residue stream is in parallel to the high lift solvent deasphalting unit, the low lift solvent deasphalting unit, and the bitumen blowing unit.