Effect of the Initial Moisture Content of Cedar Needles on the Time Characteristics of the Ignition of Coal–Water Suspensions

The results of experimental studies on the influence of the initial moisture content of cedar needles on the time characteristics of ignition of coal–water suspensions (CWSs) based on D-grade thermal coal are presented. Biomass (fallen and freshly cut cedar needles) was used as an additive accelerating the ignition process. The effect of the initial moisture content of the plant additive in the composition of coal–water suspensions on the ignition delay times was analyzed. It has been established that the initial moisture content of cedar needles did not have a significant effect on the time characteristics of the fuel ignition process (the difference did not exceed 4%), but the addition of the needles led to a significant decrease in the ignition delay times (the CWS ignited faster on average by 15%).