Effects of vapor-liquid equilibria on coke deposition in trickle-bed reactors during heavy oil processing; 1: Experimental results

Journal Article · Thu Mar 31 23:00:00 EST 1994 · Industrial and Engineering Chemistry Research; (United States)

DOI:https://doi.org/10.1021/ie00028a006· OSTI ID:7041182

Jong, K.P. de ^[1]

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1. Koninklijke/Shell Lab., Amsterdam (Netherlands)

The deposition of coke onto catalysts during the conversion of heavy vacuum gas oil has been investigated in a trickle-bed reactor at elevated temperatures (ca. 450 C) and moderate hydrogen pressures (30 bar). It is argued that coke is formed via two parallel routes, viz., (i) thermal condensation reactions of aromatic moieties and (ii) catalytic dehydrogenation reactions. The amount of coke deposited onto the catalyst shows a distinct maximum as a function of both temperature and hydrogen/oil ratio. These maxima are induced by the vapor-liquid equilibria in the reactor. A qualitative description involving the concentration of heavy coke precursors present in the oil phase is given.

• OSTI ID: 7041182
• Journal Information: Industrial and Engineering Chemistry Research; (United States), Journal Name: Industrial and Engineering Chemistry Research; (United States) Vol. 33:4; ISSN IECRED; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYSTS
CHALCOGENIDES
CHEMICAL PROPERTIES
CHEMICAL REACTION KINETICS
COBALT
COKE
DATA
DEACTIVATION
DEPOSITION
DISTILLATES
ELEMENTS
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
GAS OILS
INFORMATION
KINETICS
METALS
MOLYBDENUM
NICKEL
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
PROCESSING
REACTION KINETICS
REFINING
SILICON COMPOUNDS
SILICON OXIDES
TRANSITION ELEMENTS
VANADIUM
VISCOSITY