Effect of zeolite, kaolin and alumina during cracking of heavy petroleum residue evaluated by thermogravimetry |
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Authors: | Maria Luisa A Gon?alves Joyce R C Barreto Wildson V Cerqueira and Ana Maria R F Teixeira |
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Institution: | (1) Analytical Chemistry Department, Chemistry Institute, Universidade Federal Fluminense, Niter?i, RJ, CEP 240-2150, Brazil;(2) Chemistry Pos Graduation Program, Chemistry Institute, Universidade Federal Fluminense, Niter?i, RJ, CEP 240-2150, Brazil |
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Abstract: | This work evaluates the effect of the FCC catalyst components—Y zeolite, kaolin and alumina—on the formation of coke during
the cracking of heavy residue (HR) of petroleum. The Y zeolite, kaolin and alumina were mixed with a HR at a ratio of approximately
1:4. The effect was studied using dynamic thermogravimetry at a heating rate of 50 K min−1, with N2 (between 35 and 700 °C) and air (in the 700–1,000 °C temperature range). The HR analyzed in these conditions formed 8.1%
of coke. All the mixtures presented larger coke formation than that observed in pure HR. The Y zeolite presented fourfold
larger coke formation, while kaolin and alumina showed twofold higher formation than pure HR. The major focus of this study
was to verify the sensitivity of the TG technique in providing information about coke formation in the fluid catalytic process
of refineries. |
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