关键词: 热能工程, 生物质型煤, 热重分析, 燃烧特性

Abstract:

The biomass compound coal(BCC) composed of anthracite coal, corn haulm and loess was taken as the object of study. The combustion characteristic of the BCC containing 5%~35% of the corn haulm was studied by the thermo gravimetry under different experiment conditions. The relationships between the temperature and the sample mass were obtained and the characteristic temperatures at different combustion stages and the maximum mass loss rate of the volatile fraction were found. The whole temperature range of the combustion process, the burnup rate and the area occupied by the mass loss rate curve were calculated. Comparing with the results of the traditional coal briquette, the combustion characteristic of the BCC appears better, the initial separation temperature is reduced by 50℃, the final burnup temperature is reduced by 186℃, the burnup rate is enhanced by 10%.

Key words: thermal power engineering, biomass compound coal (BCC), thermogravimentry, combustion characteristic