US 11,731,094 B2
Process for multistage hydroprocessing in a single reactor
Yamini Gupta, Faridabad (IN); Arun Arangarasu, Faridabad (IN); Nepal Viswakarma, Faridabad (IN); Ganesh Vitthalrao Butley, Faridabad (IN); Sarvesh Kumar, Faridabad (IN); Madhusudan Sau, Faridabad (IN); Gurpreet Kapur Singh, Faridabad (IN); and Sankara Sri Venkata Ramakumar, Faridabad (IN)
Assigned to INDIAN OIL CORPORATION LIMITED, Mumbai (IN)
Filed by Indian Oil Corporation Limited, Mumbai (IN)
Filed on Jul. 26, 2022, as Appl. No. 17/814,929.
Claims priority of application No. 202121033679 (IN), filed on Jul. 27, 2021.
Prior Publication US 2023/0035683 A1, Feb. 2, 2023
Int. Cl. B01J 8/00 (2006.01); B01J 8/02 (2006.01); C10G 45/22 (2006.01); C10G 45/72 (2006.01); C10G 47/10 (2006.01); C10G 65/12 (2006.01)
CPC B01J 8/0221 (2013.01) [C10G 45/22 (2013.01); C10G 45/72 (2013.01); C10G 47/10 (2013.01); C10G 65/12 (2013.01); B01J 2208/00911 (2013.01); C10G 2300/1044 (2013.01); C10G 2300/1059 (2013.01); C10G 2300/1074 (2013.01); C10G 2300/202 (2013.01); C10G 2300/4006 (2013.01); C10G 2300/4012 (2013.01); C10G 2300/4018 (2013.01); C10G 2400/02 (2013.01); C10G 2400/04 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A reactor system for a single phase, multistage hydroprocessing of a liquid hydrocarbon feed pre-saturated with hydrogen, the reactor system comprising:
a horizontal reactor with a feed inlet nozzle at one lateral end for an axial entry of a premixed mixture of the liquid hydrocarbon feed and gaseous hydrogen at a mixing point;
a fixed bed catalyst loaded inside the horizontal reactor throughout length of the horizontal reactor, wherein the horizontal reactor is a fixed bed reactor;
a longitudinal sparger running along a bottom portion of the horizontal reactor with a multitude of nozzles provided at a top periphery of the sparger to distribute the gaseous hydrogen;
a multitude of vertically oriented gas separation and withdrawal vertical separation limbs provided at a top of the horizontal reactor acting as micro separation vessels and as a withdrawal assembly, integrated with the horizontal reactor for removal of product gases comprising hydrogen sulfide (H2S), ammonia (NH3) and dry gases that rise as bubbles against horizontally flowing liquid hydrocarbon feed, wherein the gas separation and withdrawal vertical separation limbs each are provided with pressure and level control devices to control pressure and levels of each portion, and wherein each vertical separation limb comprises a gas-liquid disengaging space and a gas withdrawal assembly; and
an outlet product collector provided with outlet collectors distributed uniformly along a cross section of the horizontal reactor designed to avoid accumulation of liquids at other lateral end of the horizontal reactor and enable removal of a liquid product depleted of heteroatoms, wherein the liquid product is Ultra Low Sulfur Gasoline (ULSG) or Ultra Low Sulfur Diesel (ULSD).