TY - JOUR
T1 - Pyrolysis kinetics of atmospheric residue and its SARA fractions
AU - Alvarez, Elena
AU - Marroquín, Gustavo
AU - Trejo, Fernando
AU - Centeno, Guillermo
AU - Ancheyta, Jorge
AU - Díaz, José A.I.
N1 - Funding Information:
We thank to CONACYT, Secretaría de Investigación y Posgrado del Instituto Politécnico Nacional (SIP-IPN) for financial support and Instituto Mexicano del Petróleo for technical support. Elena Alvarez also thanks to CONACYT for the Grant NO. 227051 and Programa Institucional de Formación de Investigadores (PIFI).
PY - 2011/12
Y1 - 2011/12
N2 - Thermal analysis of atmospheric residue from heavy crude oil and its SARA fractions was carried out and the tendency of each fraction toward coke formation was determined. The coke yield was 16.3 wt.% for atmospheric residue, 43.1 wt.% for asphaltenes, 4.6 wt.% for resins, 3.8 wt.% for aromatics, and 0.3 wt.% for saturates. Pyrolysis kinetics of residue and its fractions, i.e., asphaltenes, resins and aromatics was also investigated. The TG experiments were conducted at three different heating rates of 8, 12, and 16 °C/min from room temperature up to 800 °C under nitrogen atmosphere to verify the weight variation with reaction temperature. Isoconversional analysis to fit data assuming first order kinetics was employed. Asphaltenes was the fraction that produces coke in higher amount having a range of activation energy of 41.0-58.6 kcal mol-1 whereas activation energy for atmospheric residue ranged from 11.5 to 30.0 kcal mol-1.
AB - Thermal analysis of atmospheric residue from heavy crude oil and its SARA fractions was carried out and the tendency of each fraction toward coke formation was determined. The coke yield was 16.3 wt.% for atmospheric residue, 43.1 wt.% for asphaltenes, 4.6 wt.% for resins, 3.8 wt.% for aromatics, and 0.3 wt.% for saturates. Pyrolysis kinetics of residue and its fractions, i.e., asphaltenes, resins and aromatics was also investigated. The TG experiments were conducted at three different heating rates of 8, 12, and 16 °C/min from room temperature up to 800 °C under nitrogen atmosphere to verify the weight variation with reaction temperature. Isoconversional analysis to fit data assuming first order kinetics was employed. Asphaltenes was the fraction that produces coke in higher amount having a range of activation energy of 41.0-58.6 kcal mol-1 whereas activation energy for atmospheric residue ranged from 11.5 to 30.0 kcal mol-1.
KW - Pyrolysis kinetics
KW - Thermal decomposition
KW - Thermogravimetric analysis
UR - http://www.scopus.com/inward/record.url?scp=80053940018&partnerID=8YFLogxK
U2 - 10.1016/j.fuel.2010.11.046
DO - 10.1016/j.fuel.2010.11.046
M3 - Artículo
SN - 0016-2361
VL - 90
SP - 3602
EP - 3607
JO - Fuel
JF - Fuel
IS - 12
ER -