华中科技大学学报（自然科学版）2011，Vol.39Issue(1)：98-101,117,5.
污泥热解和气化过程中NOx前驱物的释放特性
Release features of NOx precursors during the pyrolysis and gasification of sewage sludge
摘要
Abstract
Three sewage sludge samples as GZ, LWZ and NTZH were pyrolyzed and gasified in a fixed-bed reactor. The nitrogenous components in the product gases were analyzed by Fourier transform infrared spectrometer (FT-IR). The releasing regulation of the nitrogenous components in the product gases was analyzed. The experimental results show that most of the NO, NH3 and HCN were released during 320～600, 200～700 and 300～800 ℃, respectively. LWZ releases more NH3, HCN and NO than GZ and NTZH during pyrolysis. During sewage sludge gasification under mixture gas of Ar and O2 (volume fraction is 4 ％), the NOx precursors release temperature and concentration changebie compared with pyrolysis. The NO release temperature during gasification increased by about 200,400 and 250 ℃ than pyrolysis and the NO yields was 4.30, 2.34 and 3. 93 times of that generated in pyrolysis. The NH3 release temperature during gasification was nearly the same as that of pyrolysis and the NH3 yields was 0. 67, 1.37 and 0. 95 times of that generated in pyrolysis. And the HCN release temperature during gasification decreased by 400, 100 and 200 ℃ than that of pyrolysis, and the HCN yields was 1.10, 1.21 and 0. 95 times of that generated in pyrolysis.关键词
污泥/热解/气化/前驱物/释放特性/傅里叶红外光谱仪Key words
sewage sludge/ pyrolysis/ gasification/ precursors/ release features/ Fourier transform infrared spectrometer (FT-IR)分类
能源科技引用本文复制引用
王宗华,张军营,赵永椿,郑楚光..污泥热解和气化过程中NOx前驱物的释放特性[J].华中科技大学学报（自然科学版）,2011,39(1):98-101,117,5.基金项目
国家重点基础研究发展计划资助项目(2010CB227003) （2010CB227003）
国家自然科学基金资助项目(40972102,50906031). （40972102,50906031）
