Effect of catalyst properties and operating conditions on hydroprocessing high metals feeds

Journal Article · Sat Oct 01 04:00:00 EDT 1983 · Ind. Eng. Chem. Process Des. Dev.; (United States)

DOI:https://doi.org/10.1021/i200023a018· OSTI ID:6600374

Pazos, J M; Gonzalez, J C; Saluzar-Gullen, A J

Catalytic hydroprocessing of high metals heavy oils, containing over 480 ppm Ni + V, was carried out in trickle bed pilot units. The analyses of the used catalysts (coke, metals content, and vanadium distribution) were correlated with the deactivation runs. The deactivation by coke is very much dependent on the catalyst physical properties (mean pore diameter), rather than on the chemical properties, and on the nature of the feed. As metals removal is a diffusion-controlled reaction, catalysts and operating conditions that increase the Thiele modulus, e.g., high activity and small pore catalysts, high hydrogen pressures and temperatures, show a stronger deactivation by feed metals. In this case, most of the vanadium was deposited in the outer edge of the catalyst particle. Unconventional vanadium profiles along the reactor length were obtained under certain conditions. Based on these data, a kinetic model was proposed which considers that demetallization is a complex reaction that occurs through a series of consecutive and parallel reactions.

• Research Organization: Intevep S.A., Centro de Investigacion y Desarrollo de Petroleos de Venezuela S.A., Caracas
• OSTI ID: 6600374
• Journal Information: Ind. Eng. Chem. Process Des. Dev.; (United States), Journal Name: Ind. Eng. Chem. Process Des. Dev.; (United States) Vol. 22:4; ISSN IEPDA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
CATALYSTS
CATALYTIC CRACKING
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMICAL REACTORS
COKE
CRACKING
DEACTIVATION
DECOMPOSITION
DEMETALLIZATION
DEPOSITION
DIFFUSION
ELEMENTS
ENERGY SOURCES
FLUIDIZED BED
FOSSIL FUELS
FUELS
KINETICS
METALS
PETROLEUM
PHYSICAL PROPERTIES
PYROLYSIS
REACTION KINETICS
SEPARATION PROCESSES
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
VANADIUM
VISCOSITY