Premium
An experimental and modeling study of vacuum residue upgrading in supercritical water
Author(s) -
Gudiyella Soumya,
Lai Lawrence,
Borne Isaiah H.,
Tompsett Geoffrey A.,
Timko Michael T.,
Choi KiHyouk,
Alabsi Mohnnad H.,
Green William H.
Publication year - 2018
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.16131
Subject(s) - gasoline , diesel fuel , supercritical fluid , vacuum distillation , residue (chemistry) , chemistry , distillation , coke , fuel oil , fraction (chemistry) , waste management , organic chemistry , engineering
Arabian Heavy crude oil was fractionated into distillate and vacuum residue fractions. The vacuum residue fraction was treated with supercritical water (SCW) at 450°C in a batch reactor for 15–90 min. The main products were gas, coke, and upgraded vacuum residue; the upgraded residue consisted of gasoline, diesel, and vacuum gas oil range components. The molecular composition of gas and upgraded vacuum residue was analyzed using gas chromatography (GC, GC × GC). SCW treatment converted higher carbon number aliphatics (≥C 21 ) and long‐chain (≥C 5 ) alkyl aromatic compounds into C 1 C 20 aliphatics, C 1 C 10 alkylaromatics, and multiringed species. The concentrations of gasoline and diesel range compounds were greater in the upgraded product, compared to the feed. A first‐order, five lump reaction network was developed to fit the yields of gas, coke, diesel, and gasoline range components obtained from SCW upgrading of vacuum residue. Distillation of crude oil followed by SCW treatment of the heavy fraction approximately doubled the yield of chemicals, gasoline, and diesel, while forming significantly less coke than conventional upgrading methods. © 2018 American Institute of Chemical Engineers AIChE J , 64: 1732–1743, 2018