Ignition and combustion characteristics of wet Victorian brown coal in oxy-firing and air-firing conditions

Wirhan Prationo, Lian Zhang, Jian Zhang

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearch

Abstract

The ignition and combustion characteristics of wet Victorian brown coal have been investigated in conventional-air and oxygen enriched-CO2 environment in a laboratory scale flat flame burner reactor coupled with optical diagnostics facility, including high speed cinematography and infrared pyrometer for temperature measurements. The coal used was mined from Loy Yang open seam, air-dried, crushed and sieved to obtain the pulverized particles in the size range of 63-104 microns. The wet coal samples containing 30%wt moisture was prepared by mixing the de-mineralised water and the air-dried coal samples in the mixing apparatus overnight. There is a significant ignition delay observed for wet coal burning in the furnace. As the gas temperature was held constant in all cases, this delay in ignition is due to the time required for evolution of the additional moisture from the coal itself. Wet coal burning particle temperature measured from the infrared pyrometer is also found to decrease by 100K compared to air-dried coal. This temperature reduction is due to the endothermic steam gasification due to additional moisture in the coal.

Original languageEnglish
Title of host publication30th Annual International Pittsburgh Coal Conference 2013, PCC 2013
Subtitle of host publicationBeijing, China; 15-18 September 2013
Place of PublicationPittsburgh, Pennsylvania, USA
PublisherInternational Pittsburgh Coal Conference
Pages3146-3162
Number of pages17
Volume4
ISBN (Print)9781629934389
Publication statusPublished - 2013
Event30th Annual International Pittsburgh Coal Conference 2013, PCC 2013 - Beijing, China
Duration: 15 Sep 201318 Sep 2013

Conference

Conference30th Annual International Pittsburgh Coal Conference 2013, PCC 2013
CountryChina
CityBeijing
Period15/09/1318/09/13

Cite this

Prationo, W., Zhang, L., & Zhang, J. (2013). Ignition and combustion characteristics of wet Victorian brown coal in oxy-firing and air-firing conditions. In 30th Annual International Pittsburgh Coal Conference 2013, PCC 2013: Beijing, China; 15-18 September 2013 (Vol. 4, pp. 3146-3162). International Pittsburgh Coal Conference.