Effect of different mixing biomass particle sizes on gasification reactivity of waste coal-biomass briquette

[出版社版]Coal gasification technology that can converse coal to gas fuels is one method of the clean coal technologies. In our study, it was suggested that gasification can be applicable to the utilization of waste coals. As well, when waste coals are used gasification technology in combination with coal-biomass briquette (BB) technology, conversion time of waste coal to gas fuel is shorter. However, gas fuels changed from waste coal-biomass briquette have low calorific values, considering in energy, it is necessary that gasification reaction time of waste coal-biomass briquette should be shorter and more effective. In this study, to shorten gasification reaction time of waste coal-biomass briquette, mixing biomass sizes in making waste coal-biomass briquette was micrified. The gasification experiments were conducted with waste coal-biomass briquette under the conditions that experimental temperature was 900 ℃, and used 300 ml･min-1 of 45 % water steam in Ar gas, after the pyrolysis experiments. As a result, gasification reaction time of waste coal-biomass briquette was shorter. It was assumed that alkali metals and alkali earth metals (AAEM) in biomass worked as the gasification catalysts were dispersed and specific surface areas were increased