Resid Hydroprocessing at Amoco

Investigation on sediment formation in residue thermal conversion based processes

“…In order to better elucidate the effect of the addition of FCC slurry on the residual oil colloidal stability additional measurements of S-value of secondary residual oil and its blends with FCC slurry were required. Since the S-values of the unconverted residue obtained by thermal cracking of the VRO and its blends with the FCC slurry at 410°C for 165 min were diminished to 1.00 we decided to investigate the colloidal stability of an unconverted atmospheric residual oil, obtained from another thermal conversion based process -the H-Oil ebullated hydrocracking [1][2][3][4][5][6][7] which had S-value (1.206) higher than 1.00. Properties of the unconverted residual oil from H-Oil are summarized in Table 4.…”

“…The residue thermal cracking and residue hydroconversion processes are considered as thermal conversion based processes because the residual oil conversion in these processes is obtained by thermal effect [1][2][3][4][5][6][7]. The role of catalyst and hydrogen partial pressure in residue hydroprocessing is related to suppressing the undesirable reactions of polymerization and polycondensation, which lead to coke formation, and has minor effect on residue conversion [7].…”

Investigation of the mechanism of sediment formation in residual oil hydrocracking process through characterization of sediment deposits

“…One of the problems faced by the refiners in residual oil hydrocracking at high conversion is the formation of soft cokelike substances called sediment or sludge [4,5]. The carbonaceous sediment materials usually deposit on the reactor and downstream vessels as well as on the catalyst surface and cause both operability and rapid catalyst deactivation problems.…”

The extraction of bitumen from western oil sands. Final report, July 1989--September 1993

“…While impurities such as sulfur may be distributed over a wide boiling range, metals are generally concentrated in the resin and asphaltene fractions. (224) The metal deposition ultimately 409 determines the catalystls total lifetime.…”