Abstract
The combustion characteristics of coal samples with different particle size were investigated using a thermogravimetric analyzer. Three different heating rates were set in the oxygen-deficient atmosphere of 12 vol % oxygen concentration. Experiments were conducted on four particle sizes with a diameter of 0.6, 1.0, 2.0, and 4.0 mm. It was found that ignition and burnout temperatures of coals rose approximately linearly with the increasing particle size. The ignition temperature of the coal with a diameter of 4.0 mm (482 °C–520 °C) varied greatly at different heating rates compared with that of 0.6 mm (473 °C–481 °C). The effect of particle size on the ignition temperature decreased with the increase in heating rate, while the effect on the burnout temperature was promoted. The calculation of the combustion index and the results of the kinetic analysis indicated that the reactivity decreased as the coal particle size increased. The results of this paper can provide guidelines for the development of a staged fuel-feeding horizontal circulating fluidized bed boiler.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
