Yuanbo Zhang

TL;DR: In this paper, an ultrasonic extraction technology was utilized to extract the different functional groups from coals and the extracted coal samples were further collected for tests of Fourier infrared (FTIR) spectrum, electron paramagnetic resonance (EPR) spectrum and thermogravimetric (TG) analysis.

TL;DR: In this article, three coals with different metamorphic grades were collected and tested to acquire the information including the temperature profiles, movement of the hottest spots, gaseous products, limiting parameters and so forth.

TL;DR: In this article, a method to calculate the key parameters of coal oxidation reaction based on temperature-programmed tests was proposed, and a one-step global numerical model for exploring coal oxidation considering the effects of multi-component material was established.

TL;DR: In this article, a volume-averaged oxygen consumption rate (OCR) was proposed to evaluate the characteristics of the oxidation reaction of coal and showed that increasing the volume fraction of oxygen and the programmed heating rate both can promote the reaction between coal and oxygen and reduce the hysteretic effects of heating in the reaction under external heating.

TL;DR: In this paper, a two-step parallel coal dust oxidation reaction mechanism is used to study the self-ignition and combustion characteristics of coal dust under inclination conditions, where the consumption and transfer of multiple substances are considered.