NUMERICAL SIMULATION ON FORMATION AND REDUCTION OF NO BY BIOMASS REBURNING IN A DTF REACTOR
IntroductionAs one of the important renewable energy resources, biomass fuels are attracting more and more attention due to the decreasing resources of fossil fuels and their effects on environment. Studies on Nox formation date back several decades and have focused on the Nox formation and destruction processes in coal combustion. However, interests in Nox formation and destruction from biomass is gowning, a few models about biomass combustion and Nox conversion are reported in literature. Gungor 1 built a two-dimensional model for biomass combustion and Nox conversion in CFB. The model includes 25 global homogeneous and heterogeneous reactions, and 19 reactions are used for NOx conversion. P. Kaushal2 built a one-dimensional steady state model which was used to investigate combustion of biomass char in CFB. Estelle et a3 presented a model studying the formation and destruction of gaseous pollutions such as CO, NO, N2O, SO2, HCl during MSW combustion in CFB. The results show that O2, CO2 and CO profiles are mainly depended on char combustion and CO oxidation reaction rate, and char is the main catalyst of NO conversion reactions. Mechanisms of straw combustion and NO formation and destruction in fixed-bed combustion were studied by H.Zhou et al4. The model included 20 reactions, of which 12 belong to fuel-nitrogen reaction network, and volatile nitrogen is assumed to be HCN, NH3, NO and HNCO, char nitrogen is converted to NO in the combustion process. The previous work on biomass combustion and nitrogen chemistry paid a lot of attention on biomass combustion model and fuel nitrogen conversion; few studies were carried out on biomass combustion and NO reduction in reduction atmosphere of reburning. The aim of this paper is to study the combustion behavior and NO reduction behavior of husk rice in a drop tube furnace.
Xiaoli Li Rui Sun Feng Ling Shaohua Wu Jiyi Luan
School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang Province, 150001,China
国际会议
The 7th China-Korea Workshop on Clean Energy Technology(第七届中韩清洁能源技术研讨会)
太原
英文
171-172
2008-06-25（万方平台首次上网日期，不代表论文的发表时间）