Study on coal char ignition by radiant heat flux.

Research output: Contribution to journalArticle

Abstract

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 %.

Original languageEnglish
Article number012223
JournalJournal of Physics: Conference Series
Volume891
Issue number1
DOIs
Publication statusPublished - 10 Nov 2017
EventInternational Conference on Problems of Thermal Physics and Power Engineering 2017, PTPPE 2017 - Moscow, Russian Federation
Duration: 9 Oct 201711 Oct 2017

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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