Kinetics of gas oil catalytic cracking

Sertić-Bionda, Katica; Gomzi, Zoran; Fabulic-Ruszkowski, M.

doi:10.1007/s11144-006-0117-0

Cited by 3 publications

(1 citation statement)

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“…The estimated activation energies for the conversion of heavy fraction to naphtha ( E HN ) and conversion of naphtha to C 1 –C 4 gaseous products ( E NG ) were 9.89 and 15.79 kcal/mol, respectively. Reported values for the corresponding reactions during catalytic cracking of VGO were in the range of 11.7–16.2 kcal/mol and 13.6–27.0 kcal/mol, respectively. ,− It can be noticed that the E NG obtained in this study was within the range of activation energies reported in the literature while E HN is somewhat below the range.…”

Section: Kinetic Modelingsupporting

confidence: 61%

Catalytic Cracking of Arab Super Light Crude Oil to Light Olefins: An Experimental and Kinetic Study

Al-Khattaf

Ali

2018

Energy Fuels

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Catalytic cracking of Arab Super Light (ASL) crude oil (containing 46.1 wt % naphtha-range fraction) was studied over zeolite Y- (Y-Cat) and MFI-based (Z-Cat) catalysts at 500–575 °C. Experiments were conducted in a riser simulator by varying the residence times from 1 to 10 s. ASL crude oil and the cracked products were divided into heavy fraction, naphtha, and C1–C4 gases. Experimental results showed that additional naphtha is formed due to the cracking of the heavy fraction, and the formation of C1–C4 gaseous products occur mostly via cracking of naphtha. An increase in reaction time or temperature showed a more pronounced effect on the propylene yield compared to that of ethylene. Z-Cat produced more ethylene and propylene, which was attributed to its higher acidity, shape selectivity, and the higher hydrogen transfer reaction over Y-Cat. A three-lump model was appropriate for kinetic modeling of the catalytic cracking of ASL over Y-Cat. Comparison of the activation energies and rate constants showed that conversion of the heavy fraction to naphtha (E HN = 9.89 kcal/mol) was easier compared to the cracking of naphtha to C1–C4 gaseous products (E NG = 15.79 kcal/mol). Direct cracking of heavy fraction to C1–C4 gaseous products was found to have highest activation energy (E HG = 79.89 kcal/mol) in the reaction scheme.

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