化工进展Issue(1)：327-335,9.DOI:10.16085/j.issn.1000-6613.2016.01.045
无烟煤化学链燃烧过程燃料氮转化释放特性
Fuel nitrogen transfer in chemical looping combustion of anthracite
郭万军 1张海峰 1宋涛 1沈来宏1
作者信息
- 1. 能源热转换及其过程测控教育部重点实验室，东南大学能源与环境学院，江苏 南京210096
- 折叠
摘要
Abstract
The present paper presents the investigation of fuel nitrogen transfer of anthracite in chemical looping combustion (CLC) with an iron ore oxygen carrier based on a small scale fluidized bed reactor. With respect to its volatile nitrogen and char nitrogen conversion behavior,the combustion characteristics of volatile matter and its corresponding char were experimentally investigated. The nitrogen intermediates (HCN and NH3) from fuel nitrogen had a high chemical affinity with the bed materials of the iron ore oxygen carrier towards formation of N2 and NO. During the volatile nitrogen conversion of the Huaibei anthracite,NO was the sole product of nitrogen oxide. Meanwhile,some HCN and NH3 were released and the NH3 concentration was higher than HCN. In the reduction process of char combustion,part of NO was formed due to the oxidation of HCN and NH3 by the iron ore,and there was no N2O formation in the process. A high reduction temperature accelerated formation of NO. To reduce the amount of char into the oxidation process,that is oxygen carrier regeneration process, could totally reduce evolution of NO and N2O in the air reactor.关键词
化学链燃烧/煤/燃料氮/转化特性Key words
chemical looping combustion (CLC)/coal/fuel nitrogen/transfer分类
化学化工引用本文复制引用
郭万军,张海峰,宋涛,沈来宏..无烟煤化学链燃烧过程燃料氮转化释放特性[J].化工进展,2016,(1):327-335,9.
