Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| 抗生素菌渣热解N官能团变化特征及其与NOx前驱物关系研究 | |
| Alternative Title | Evolution of nitrogen functionalities and their relation to NOx precursors during pyrolysis of antibiotic mycelia wastes |
詹昊1,2; 林均衡1,2; 黄艳琴1 ; 阴秀丽1; 刘华财1; 袁洪友1; 吴创之1,2
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| 2017-10 | |
| Source Publication | 燃料化学学报
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| ISSN | 0253-2409 |
| Volume | 45Issue:10Pages:1219-1229 |
| Abstract | 以青霉素菌渣(PMW)和土霉素菌渣(TMW)为对象,在水平管式反应器中进行快速热解,采用X射线光电子能谱(XPS)表征和化学吸收-分光光度定量分析方法,研究了抗生素菌渣热解N官能团变化特征及其与NOx前驱物的关系。结果表明,菌渣燃料N官能团分为无机N(N-IN)和蛋白质及其水解产物N(N-A)两种。决定菌渣NOx前驱物以NH3-N为主,N官能团主要为N-A,PMW占81.1%、TMW占59.0%。在低温区间,N-IN在150-250℃分解和N-A在250-450℃转化,为NH3-N主要来源；PM W和TM W产率分别为20.9%和25.6%,而HCN-N产率小于2%,基本与燃料N官能团特征无关；该阶段伴随吡啶N(N-6)和吡咯N(N-5)的生成及转化,峰值在350-400℃。在高温区间,半焦N反应,主要是N-6和N-5的转化,为NH3-N和部分HCN-N的来源；该阶段伴随少量更稳定质子化吡啶N(N-Q)和氮氧化物N(N-X)生成。由于N-IN和不稳定N-A低温下会快速分解,250-300℃下菌渣半焦N去除高达40%、能量损失可控制在25%,因此,采用合适低温热解处理菌渣,在保证能量前提下可有效去除燃料中的N。 |
| Other Abstract | On the basis of rapid pyrolysis of two antibiotic mycelial wastes( AMWs),viz.,penicillin mycelia waste( PMW) and terramycinmycelial waste( TMW),in a horizontal tubular quartz reactor,evolution of nitrogen functionalities and their relation to NOx precursors were investigated with the help of XPS and chemical absorption-spectrophotometry methods. The results indicate that inorganic-N( N-IN) and amide-N/amine-N/amino-N( N-A) are two kinds of nitrogen functionalities in the raw AMWs samples, determining the predominance of NH3-N among NOx precursors. N-A is found to be the main one with the proportion of 81.1%and 59. 0% for PMW and TMW,respectively. At low temperatures,the decomposition of N-IN and the conversion of N-A mainly occur at 150-250 ℃ and 250-450 ℃,respectively,which are two routes for most NH3-N with yields of 20.9%( PMW) and 25.6%( TMW). While HCN-N is produced with a small amount less than 2%,having no relationship with the characteristics of nitrogen functionalities in fuels. Besides,pyridinic-N( N-6) and pyrrolic-N( N-5) are also formed and then converted with peak values at 350-400 ℃. At high temperatures,the conversion of N-6 and N-5 is prevailing,leading to the basically equal increments on NH3-N and HCN-N. Simultaneously,a minor amount of more stable quaternary nitrogen( N-Q) and N-oxide( N-X) is produced. Typically,due to the rapid decomposition of N-IN and labile N-A at low-temperature pyrolysis,nitrogen removal can reach up to 40% while energy loss can be controlled within 25% when pyrolyzing at 250-300 ℃. As a result,low-temperature pyrolysis could be an effective method for nitrogen removal whereas preserving the energy in AMWs. |
| Keyword | 抗生素菌渣 N官能团 NOx前驱物 低温热解 N去除 AMWs nitrogen functionalities NOx precursors low-temperature pyrolysis nitrogen removal |
| Language | 中文 |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/16611 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | 吴创之 |
| Affiliation | 1.中国科学院广州能源研究所，中国科学院可再生能源重点实验室，广东省新能源和可再生能源重点实验室，广东广州510640; 2.中国科学院大学，北京100049 |
| First Author Affilication | GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | 詹昊,林均衡,黄艳琴,等. 抗生素菌渣热解N官能团变化特征及其与NOx前驱物关系研究[J]. 燃料化学学报,2017,45(10):1219-1229. |
| APA | 詹昊.,林均衡.,黄艳琴.,阴秀丽.,刘华财.,...&吴创之.(2017).抗生素菌渣热解N官能团变化特征及其与NOx前驱物关系研究.燃料化学学报,45(10),1219-1229. |
| MLA | 詹昊,et al."抗生素菌渣热解N官能团变化特征及其与NOx前驱物关系研究".燃料化学学报 45.10(2017):1219-1229. |
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