Year: 2025
Type: article
Abstract: This study examines the thermal characteristics and kinetics of oil shale combustion using thermogravimetric analysis (TGA) at various heating rates. The combustion process includes three stages: dehydration, main combustion (70-80% mass loss), and mineral decomposition. Kinetic analysis using model-free (Ozawa-Flynn-Wall, Kissinger) and model-based (multi-step reaction kinetics) methods revealed that the second-order reaction model (F2) had the highest accuracy. Oil shale combustion involves multi-step reactions, with activation energy and pre-exponential factors varying nonlinearly with conversion rates. Combining model-free and model-based methods provides insights for optimizing combustion processes and equipment design for the efficient utilization of unconventional energy resources.
Source: Molecules
Authors: Fajun Zhao, Hong Zhang, Yangming Liu, Lei Zhang, Sen Liu, Tianyu Wang, Meng Li
Institutions: Northeast Petroleum University, Daqing Oilfield of CNPC
Language: English
Topic: Thermal and Kinetic Analysis
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,258
OpenAlex ID: W4409586451