生物质气化再燃特性实验研究

生物质能是指利用自然界的植物、粪便以及城乡有机废物转化成的能源。生物质能是唯一的碳基可再生能源，燃用生物质燃料可以实现CO2净排放为零。生物质能的再利用十分有效，可以发电，可以合成新的化学物，还可以减少NOx、SOx及颗粒物排放。因此，生物质能是解决化石能源短缺和污染问题的主要可再生能源。

Experimental study on characteristics of biomass gasification-reburning

A experimental study of characteristics of NO reduction by a simulating production gas of biomass gasification was performed in a ceramic flow reactor heated by an electric furnace. The gas was composed of CO, CO2, CH4, H2 and N2, and the temperature used in the experiments ranged from 1000℃ to 1400℃. The influence of the inlet concentration of oxygen (0%～5%), the local equivalence ratio, φ(0.5～2.28), and the reactor temperatures was studied to analyse the characteristics of biomass gasification reburning. The results indicate that more consumption of reducting agent is needed to increase the NO reduction efficiency in pyrolysis condition. The suitable values of the local equivalence ratio, φ, could make the NO reduction efficiency in oxidation condition higher than that in pyrolysis condition. The local equivalence ratio is an important parameter for NO reduction, and higher NO reduction efficiency can be obtained when 〖φ varies between 0.8 and 1.1. The reduction of NO is favored at high temperatures.