| 流化床煤燃烧过程不同气氛下的气态氮释放特征 |
| |
| 引用本文： | 白浩隆,付亮亮,许光文,白丁荣. 流化床煤燃烧过程不同气氛下的气态氮释放特征[J]. 化工学报, 2022, 73(2): 876-886. DOI: 10.11949/0438-1157.20211020 |
| |
| 作者姓名： | 白浩隆 付亮亮 许光文 白丁荣 |
| |
| 作者单位： | 沈阳化工大学能源与化工产业技术研究院,辽宁沈阳110142;沈阳化工大学能源与化工产业技术研究院,辽宁沈阳110142;辽宁科技大学化学工程学院,辽宁鞍山114051 |
| |
| 基金项目： | 辽宁省“兴辽英才计划”项目(XLYC1902021);国家自然科学基金委辽宁联合基金重点项目(U190820065) |
| |
| 摘 要： | 利用微型流化床反应装置，结合快速过程质谱仪，在850~940℃操作温度下，研究了三种不同粒度分布烟煤和无烟煤在热解、气化和燃烧反应条件下四种主要气态氮产物HCN、NH3、NO和NO2的释放规律。结果表明，微型流化床可以实时检测挥发分氮和焦炭氮的动态释放序和类型，热解、气化和燃烧反应气氛的改变主要影响HCN和NH3的释放量。热解产物的气态氮主要是来自于挥发分，燃烧反应的HCN和NH3的释放量与温度有明显关系，而气化反应的各类气态氮释放量随温度变化波动不大。煤颗粒尺寸和温度变化对烟煤和无烟煤中各类气态氮释放量产生影响比较复杂，其中NH3的释放特性是区分挥发分N释放和半焦N释放的重要特征。
|
| 关 键 词： | 流化床 煤燃烧 粒度分布 气态氮 |
| 收稿时间： | 2021-07-22 |
Characteristics of gaseous nitrogen release in coal fluidized bed combustion under different atmospheres |
| |
| BAI Haolong,FU Liangliang,XU Guangwen,BAI Dingrong. Characteristics of gaseous nitrogen release in coal fluidized bed combustion under different atmospheres[J]. Journal of Chemical Industry and Engineering(China), 2022, 73(2): 876-886. DOI: 10.11949/0438-1157.20211020 |
| |
| Authors: | BAI Haolong FU Liangliang XU Guangwen BAI Dingrong |
| |
| Affiliation: | 1.Institute of Industrial Chemistry and Energy Technology, Shenyang University of Chemical Technology, Shenyang 110142, Liaoning, China;2.School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China |
| |
| Abstract: | The release of four main gaseous nitrogen products (HCN, NH3, NO and NO2) from bituminous coal and anthracite with different particle sizes during pyrolysis, gasification and combustion were studied by using a micro fluidized bed reactor combined with a rapid process mass spectrometer at 850—940℃. The results show that the micro fluidized bed can detect the dynamic release sequence and type of volatile-N and char-N in real time. The change of pyrolysis, gasification and combustion reaction atmosphere mainly affects the release of HCN and NH3. The gaseous nitrogen of pyrolysis is mainly produced from volatiles. The released amount of HCN and NH3 in combustion is affected by temperature, while the released amount of gaseous nitrogen products in gasification changes little with temperature. The changes in coal particle size and temperature have complex effects on various gaseous releases in bituminous coal and anthracite. Among them, the release characteristics of NH3 are important characteristics that distinguish the release of volatile N and semi-coke. |
| |
| Keywords: | fluidized bed coal combustion size distribution gaseous nitrogen |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《化工学报》浏览原始摘要信息 |
|
点击此处可从《化工学报》下载免费的PDF全文 |
|
