US 11,866,654 B2
Production of high quality diesel by supercritical water process
Ki-Hyouk Choi, Dhahran (SA); Vinod Ramaseshan, Ras Tanura (SA); and Mohnnad H. Alabsi, Dammam (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Apr. 8, 2021, as Appl. No. 17/225,521.
Application 17/225,521 is a continuation of application No. 15/896,718, filed on Feb. 14, 2018, granted, now 11,001,766.
Prior Publication US 2021/0222074 A1, Jul. 22, 2021
Int. Cl. C10G 53/04 (2006.01); C10G 7/06 (2006.01); B01D 11/02 (2006.01); B01D 3/10 (2006.01); B01D 3/14 (2006.01); C10L 1/08 (2006.01); C10G 9/34 (2006.01); C10G 31/08 (2006.01)
CPC C10G 53/04 (2013.01) [B01D 3/10 (2013.01); B01D 3/14 (2013.01); B01D 11/0203 (2013.01); C10G 7/06 (2013.01); C10G 9/34 (2013.01); C10G 31/08 (2013.01); C10L 1/08 (2013.01); C10G 2300/1059 (2013.01); C10G 2300/1074 (2013.01); C10G 2400/04 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A system for producing a diesel having improved cold flow properties, the system comprising:
a distillation column, the distillation column configured to separate a crude oil to produce a light fraction stream, a light gas oil, a light vacuum gas oil, a heavy vacuum gas oil, and a vacuum residue stream, where the light fraction stream has a T95% cut point of less than 240 deg C, where the light gas oil has a T95% cut point in the range between 300 deg C. and 340 deg C, where the light vacuum gas oil has a T95% cut point in the range between 400 deg C. and 430 deg C, where the heavy vacuum gas oil has a T95% cut point of greater than 560 deg C, where the vacuum residue stream has a T5% cut point of greater than 560 deg C;
a supercritical upgrading unit fluidly connected to the distillation column, the supercritical upgrading unit configured to process the light vacuum gas oil to produce an upgraded vacuum gas oil, wherein the light vacuum gas oil comprises a reduced amount of polycyclic aromatics compared to the heavy vacuum gas oil;
a fractionator fluidly connected to the supercritical upgrading unit, the fractionator configured to separate the upgraded vacuum gas oil to produce an upgraded light fraction, an upgraded light gas oil, and upgraded heavy fraction;
a resid upgrading unit fluidly connected to the distillation column, the resid upgrading unit configured to upgrade a mixed heavy stream to produce a resid upgraded product, where the mixed heavy stream is a mix of the heavy vacuum gas oil and the vacuum residue stream;
a diesel pool, the diesel pool configured to blend the upgraded light gas oil and the light gas oil, where the diesel pool comprises diesel; and
a naphtha and kerosene pool fluidly connected to the distillation column and the fractionator, the naphtha and kerosene pool configured to receive a mixture of the light fraction stream and the upgraded light fraction.