Name : The 56th Conference of Coal Science
Number : 56
Location : [in Japanese]
Date : October 29, 2019 - October 30, 2019
Pages 60-61
Ammonia is considered as one of promising energy careers in the future. One of applications using ammonia as fuel is introducing ammonia in coal fired boilers. To realize the utilization of ammonia in coal fired boilers as a fuel, it is necessary to clarify the mixing combustion characteristics of ammonia and coal. In this study, the turbulent spherical flame propagation characteristics of ammonia / coal particle cloud mixture were investigated. Under the various turbulence intensity and the types of coal, the spherical flame propagation experiments were conducted. Experimental results revealed that in some conditions, the flame propagation velocity of the mixture of ammonia / coal particle cloud / oxidizer is higher than that of the mixture of ammonia / oxidizer or that of the mixture of coal particle cloud / oxidizer. This means that there is an interaction mechanism between the ammonia / oxidizer flame and the coal particle cloud / oxidizer flame. The findings from this study can be utilized for establishment of the mixing combustion model of ammonia and coal particle cloud.
