半炭化バイオコークスの燃焼反応速度解析

抄録

Biocoke requires a large amount of energy for crushing when using powder for electric power applications. As a solution, torrefaction saves crushing energy and pulverizes it to expand the range of applications. This study discuss the effect of torrefied Biocoke (T-BIC) on combustion from combustion rate analysis. Since the fuel characteristics of T-BIC depende on the treatment conditions, combustion tests take at the furnace temperatures of 873K, 973K, and 1073K for those without torrefaction and for torrefied temperatures of 423K, 523K, and 623K, respectively. The result is derived as follows. with a Tb = 523K- T-BIC showed a pre-exponential factor of 0.00564 1/s and an activation energy of 11.73 kJ / mol., it can be estimated that dominated by the ignitability of low-temperature volatile components. At Tb = 623K-T-BIC, the frequency factor and activation energy is showed maximum values, the low-temperature volatile components volatilized, and the ignitability decreased due to the characteristics of the high-temperature volatile component. Tb = 723K-T-BIC found minimum values for both the frequency factor 0.00327 1/ s and the activation energy 11.60 kJ / mol. Especially, it is found char combustion became dominant and the ignitability improved due to the progress of carbonization.