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富氮生物质原料热解过程中NO_x前驱物释放特性研究
Authors
吴创之
张晓鸿
詹昊
阴秀丽
Publication date
1 January 2016
Publisher
Abstract
利用热重分析-傅里叶红外光谱联用(TG-FTIR)和水平管式炉-X射线光电子能谱(XPS)研究了两种富氮生物质原料(大豆秸秆(SBS)和纤维板(FB))热解过程中NOx前驱物(NH3、HCN和HNCO)的释放特性,考察温度、升温速率及燃料含N物质结构对其NOx前驱物释放行为的影响。结果表明,燃料中的N来源不同(天然固有与人工添加)造成其转化差异:SBS释放的NOx前驱物主要为NH3而FB为NH3、HCN(快速)和HNCO(慢速);FB气相N主要随挥发分析出,而SBS则相反,在二次反应阶段析出;两种燃料中N的转化随温度变化,低温下富集于半焦N,600℃以上时更多向非半焦N转移,NOx前驱物以NH3为主,高温及高升温速率利于HCN生成,若以减排NOx为目的,热解温度控制在600℃为佳;两种燃料中N的结构均为胺类N(N-A),热解时部分N-A向半焦中杂环N转化,同时伴随杂环N分解;高温下吡啶N和吡咯N分解分别主要产生HCN和NH3
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Institutional Repository of GuangZhou Institute of Energy Conversion, CAS
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oai:ir.giec.ac.cn:344007/21188
Last time updated on 17/12/2019
Institutional Repository of GuangZhou Institute of Energy Conversion, CAS
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:ir.giec.ac.cn:344007/31599
Last time updated on 04/12/2021
Institutional Repository of GuangZhou Institute of Energy Conversion, CAS
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:ir.giec.ac.cn:344007/21186
Last time updated on 17/12/2019