FORMATION OF NOx PRECURSORS DURING WHEAT STRAW PYROLYSIS AND GASIFICATION WITH O2 AND CO2

摘要：

The release behavior tests of NOx precursors from wheat straw during pyrolysis in argon and gasification in 5％O2/95％Ar and 5％O2/95％Ar were performed using a thermogravimetric analyzer (TGA) coupled with a Fourier transform infrared (FTIR) spectrometer. The results show that heating rate and particle size have substantial effects on the selectivity of the N-conversion. The atmosphere influences the N-selectivity to HCN, NH3 and HNCO. During gasification in 5％O2/95％Ar atmosphere, a remarkable amount of biomass-N is converted into HCN, and the N-conversion to NH3 decreases. The presence of O2 promotes the yields of NO and HNCO evidently. In 5％ CO2/95％Ar atmosphere, the yield of HCN decreases to about half of that in argon, the yield of NH3 keeps essentially constant compared with that in Ar. Moreover, there is no HNCO detected during the gasification in 5％CO2/95％Ar.

关键词： wheat straw HCN NH3 HNCO NOx precursors pyrolysis and gasification TG-FTIR

作者: Qiang-qiang REN Chang-sui ZHAO Xin WU Cai LIANG Xiao-ping CHEN Jie-zhong SHEN Guo-yong TANG Zheng WANG

作者单位: Thermoenergy Engineering Research Institute,Southeast University,Nanjing 210096,Jiangsu Province,P.R Wuxi Huaguang Boiler Co.,Ltd.,Wuxi 214028,Jiangsu Province,P.R.China

会议类型: 国际会议

会议名称: 2008年生物质能源技术国际会议

会议地点: 广州

会议语种:英文

页码: 1050-1056

在线出版日期: 2008-12-03（万方平台首次上网日期，不代表论文的发表时间）