Fluid catalytic cracking catalyst for reformulated gasolines: Kinetic modeling

Conference · Thu Dec 01 00:00:00 EST 1994 · Industrial and Engineering Chemistry Research; (United States)

OSTI ID:6627077

Gianetto, A ^[1]; Farag, H I ^[2]; Blasetti, A P ^[3]; Lasa, H.I. de ^[4]

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1. EniChem, Baytown, TX (United States)
2. Norwegian Inst. of Technology, Trondheim (Norway). Dept. of Chemical Engineering
3. Univ. de La Patagonia, Chubut (Argentina). Dept. de Procesos
4. Univ. of Western Ontario, London, Ontario (Canada). Faculty of Engineering Science

Changes of the relative importance of intradiffusion on USY zeolite crystals were studied as a way of affecting selectivity of catalytic cracking reactions. Zeolite crystals were synthesized (Si/Al = 2.4), activated and stabilized using ion exchange and steam calcination to obtain USSY (Ultra Stable Submicron Y) zeolites. After the activation the zeolites were pelletized (45--60 [mu]m particles). USSYs were tested in a novel Riser Simulator. Results obtained show that total aromatics (BTX), benzene, C[sub 4] olefins, and coke were significantly affected with the change of zeolite crystal sizes. Gasolines produced with USSY zeolites contain less aromatics and particularly lower benzene levels. Experimental results were analyzed with a model including several lumps: unconverted gas oil, gasoline, light gases, and coke. This model also accounts for catalyst deactivation as a function of coke on catalyst. Various kinetic parameters were determined with their corresponding spans for the 95% level of confidence.

• OSTI ID: 6627077
• Report Number(s): CONF-940301-; CODEN: IECRED
• Journal Information: Industrial and Engineering Chemistry Research; (United States), Vol. 33:12; Conference: 207. spring national meeting of the American Chemical Society (ACS), San Diego, CA (United States), 13-18 Mar 1994; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
GAS OILS
CATALYTIC CRACKING
GASOLINE
CHEMICAL COMPOSITION
ZEOLITES
CATALYTIC EFFECTS
CRYSTAL STRUCTURE
ALKENES
CATALYSTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
MATHEMATICAL MODELS
REFINERY GASES
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
DISTILLATES
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GASES
HYDROCARBONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
KINETICS
LIQUID FUELS
MATERIALS
MINERALS
ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PYROLYSIS
REACTION KINETICS
SILICATE MINERALS
THERMOCHEMICAL PROCESSES
YIELDS
020400* - Petroleum- Processing