KINETIC-ANALYSIS OF OXIDATION BEHAVIOR OF CRUDE-OIL SARA CONSTITUENTS

In this research two Turkish crude oils (medium and heavy) were separa ted into their saturate, aromatic, resin, and asphaltene (SARA) fracti ons by column chromatographic techniques, and combustion experiments w ere carried out on whole crude oils and their fractions by thermogravi mentric analysis (TD/DTG) under air atmosphere at a 10 degrees C/min h eating rate. Investigation of SARA fractions allows quantitative deter mination of the temperature intervals at which evaporation, oxidation, and combustion effects operate for each fraction. In the course of th is research, the kinetic parameters of SARA fractions were determined according to the Coats and Redfern technique. By using the data and fi ndings of this research, one can take advantage of studying the kineti cs of SARA fractions instead of those of the complex whole oil for mod eling of the overall process to accurately predict combustion.