The study on coal char ignition by CO2-continuous laser was carried out. The coal char samples of T-grade bituminous coal and 2B-grade lignite were studied via CO2-laser ignition setup. Ignition delay times were determined at ambient condition in heat flux density range 90-200 W/cm2. The average ignition delay time value for lignite samples were 2 times lower while this difference is larger in high heat flux region and lower in low heat flux region. The kinetic constants for overall oxidation reaction were determined using analytic solution of simplified one-dimensional heat transfer equation with radiant heat transfer boundary condition. The activation energy for lignite char was found to be less than it is for bituminous coal char by approximately 20 %.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 10 Nov 2017|
|Event||International Conference on Problems of Thermal Physics and Power Engineering 2017, PTPPE 2017 - Moscow, Russian Federation|
Duration: 9 Oct 2017 → 11 Oct 2017
ASJC Scopus subject areas
- Physics and Astronomy(all)