Combustion Characteristics and Working Condition Optimization for Wood and Herb Biomass
HE Shanshan1, LI Wei1, WANG Lingzhi1, LU Han1, ZHANG Hongliang2
1 Key Laboratory of Reginal Energy System Optimization, Ministry of Education, North China Electric Power University, Beijing 102206; 2 Guangdong Grid Electric Power Research Institute, Guangzhou 510600
Abstract: In order to improve the combustion efficiency of the biomass fuel and alleviate corrosion problems in biomass power plant boiler. Under different oxygen stoichiometric ratio (14% and 42%, respectively) and different heating rates (10 ℃/min, 30 ℃/min, 60 ℃/min), using thermogravimetric analysis (TG-DTG) techniques on eucalyptus trees for fuel comparison, woody and herbaceous biomass of mixed fuel thermal cracking process and combustion characteristics were analyzed. Results show that every combustion processes are similar, under the same heating rate, eucalyptus trunk in combustion process performances a certain lag. Such as 10 ℃/min volatile at the analysis stage, M1-M5 perform maximum weight loss rate between 325-330 ℃, and eucalyptus trunk is in 336 ℃ with maximum weight loss rate. At the same time, with the increase of oxygen chemical equivalence ratio and the reduction of heating rate, the combustion characteristics of various fuels have been improved. In addition, in 14% O2 condition blen-ding a higher proportion of bagasse (M2), in 42% O2 under the condition of low mixing proportion of sugarcane bagasse (M4) can improve the early flammability and combustion characteristic, but the burnout characteristics perform poor. Therefore, bagasse and other herbaceous plants as the combustion supporting additive to ignite wood material, for the efficient and stable operation of biomass power plant to provide some suggestions.
何姗姗, 李薇, 王灵志, 卢晗, 张宏亮. 木质与草本生物质燃烧特性及工况优化研究[J]. 《材料导报》期刊社, 2017, 31(6): 50-55.
HE Shanshan, LI Wei, WANG Lingzhi, LU Han, ZHANG Hongliang. Combustion Characteristics and Working Condition Optimization for Wood and Herb Biomass. Materials Reports, 2017, 31(6): 50-55.
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2017, Vol. 31 
