燃料化学学报2017，Vol.45Issue(3)：279-288,10.
药渣热解过程NOx前驱物生成特征及规律研究
Characteristics of NOx precursors and their formation mechanism during pyrolysis of herb residues
摘要
Abstract
Based on two herb residues-herbal tea waste (HTW) and penicillin mycelial waste (PMW), characteristics of NOx precursors during their pyrolysis were investigated in a horizontal tubular reactor with the help of XPS and TGA technologies.Effects of thermal conditions and physicochemical properties of fuels were discussed and compared.The results demonstrate that protein-N is the main nitrogen form for both HTW and PMW, determining the dominance of NH3 among NOx precursors at any operational conditions.Thermal conditions would still change the ratio and total yield by intrinsically influencing their formation pathways.Subsequently, the effects could be sequenced as follows: high temperatures with rapid pyrolysis > high temperatures with slow pyrolysis > low temperatures with rapid pyrolysis ≈ low temperatures with slow pyrolysis.Moreover, at high temperatures with rapid pyrolysis, increase in particle size or decrease in moisture content would result in reduction of total yield by 5%-11% and 4%-6%, respectively.In addition, NH3 yield is produced at low temperatures or slow pyrolysis with sequence of PMW > HTW and vice versa, depending on components in the fuels.Consequently, analyses on nitrogen forms in char and nitrogen distribution indicate that total yield of 20%-45% is observed to be independent of fuel type under typical pyrolysis conditions, which may provide helpful guidance for the clean reutilization of herb residues.关键词
凉茶药渣/青霉素药渣/NOx前驱物/热解/NH3/总产率Key words
HTW/PMW/NOx precursors/pyrolysis/NH3/total yield分类
能源科技引用本文复制引用
詹昊,阴秀丽,黄艳琴,张晓鸿,袁洪友,谢建军,吴创之..药渣热解过程NOx前驱物生成特征及规律研究[J].燃料化学学报,2017,45(3):279-288,10.基金项目
国家自然科学基金(51661145022, 51676195)资助 The project was supported by the National Natural Science Foundation of China (51661145022, 51676195). （51661145022, 51676195）
