Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7061891 | Thermochimica Acta | 2018 | 17 Pages |
Abstract
In this work, the pyrolysis kinetics of oil sands were determined based upon the TG-DTG curves. Using the single-step reaction model, the parameters of thermal decomposition kinetics of oil sands, such as the activation energy E0â¯=â¯186.14â¯kJ/mol, reaction order nâ¯=â¯5.21 and pre-exponential factor A0â¯=â¯1.56E13 sâ1, were obtained. The activation energy values of 185.05â¯kJ/mol and 162.95â¯kJ/mol were received by using the Friedman and KAS method, respectively. The result of the most probable mechanism function is not perfectly matched with the common kinetic model, the first order reaction model is not suitable for the study of oil sands' pyrolysis. Using different density probability functions, such as Logistic, Lognormal, Gaussian, Rayleigh and Weibull, the distribution of apparent activation energy of the pyrolysis of oil sands was studied. The Akaike Information Criteria and the calculated kinetic parameters show that the Weibull model is the most suitable model for studying the pyrolysis of oil sands.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Jia Chunxia, Chen Jiajia, Bai Jingru, Yang Xun, Song Shaobo, Wang Qing,