Furfural residue pyrolysis characteristics and the effect of its pyrolysis products on in-situ control of NOx emission from its combustion flue gas
文献类型：期刊论文
| 作者 | Wang, Wenyan2,3; Zhang, Guangyi1,3; Meng, Huibo2; Zhu, Xinyu2,3; Zhang, Jianling3; Xu, Guangwen2 |
| 刊名 | Huagong Xuebao/CIESC Journal
 |
| 出版日期 | 2021-11-01 |
| 卷号 | 72期号:11页码:5770-5778 |
| 关键词 | Chemical reactors - Energy utilization - Fluidized bed combustion - Flue gases - Nitrogen - Nitrogen oxides - Flues - Fluidized beds - Aldehydes - Furfural |
| ISSN号 | 4381157 |
| DOI | 10.11949/0438-1157.20211028 |
| 英文摘要 | Generally, biomass with high nitrogen resource endowments needs to control NOx emissions in the process of energy utilization. Decoupled combustion falls within low-NOx combustion technologies, which is suitable for high-water, high-nitrogen fuels and has better effects on suppressing NOx formation compared to other combustion technologies. In order to make clear the potential of pyrolysis volatile for in-situ nitrogen control in decoupled combustion and to develop the dual fluidized bed decoupled combustion technology, with furfural residue as the material, a fixed-bed reactor and a dual fluidized bed combustion apparatus were respectively employed for studying its pyrolysis characteristics and simulating its decoupled combustion in the dual fluidized bed at approximately actual working conditions in this paper. Concretely, the product distribution of furfural residue pyrolysis at different temperatures was first investigated in the fixed-bed reactor, and then the effects of the on-line pyrolysis products on in-situ control of NOx emission from synchronous combustion of the resulting pyrolysis char of the raw material in the dual fluidized bed combustion apparatus were revealed. The results showed that: in the pyrolysis temperature range of 500-700, with the increase of temperature, the semi-coke yield gradually decreased, from 45.2% to 39.8%; the gas yield showed an obvious upward trend, rising from 12.4% to 22.5%, the yield of reducing components such as CO, CH4, and H2 increased significantly; the yield of tar decreased slightly, from 15.9% to 12.9%; the yield of water did not change much. During the decoupling combustion experiments using the double fluidized bed, it was found that the volatiles produced by pyrolysis from furfural residue exhibited a good effect on in-situ nitrogen control for the combustion flue gas from its resulting pyrolysis char. The NOx control effect of the pyrolysis volatiles for the char combustion flue gas depended heavily on the pyrolysis temperature and the proportion of secondary air. When the total excess air factor ER was 1.3, the pyrolysis temperature 600 and the secondary excess air factor ER2=0.5, the effect of the volatiles from furfural residue pyrolysis on the in-situ nitrogen control for the flue gas from combustion (at 900 with the first excess air factor ER1=0.8) of the char produced by pyrolysis at the same conditions reached the best, and the NOx emission reduction ratio was high as 54.80%. These indicated that the yields and oxidation degrees of pyrolysis volatile products can be regulated to bring their potential for NOx reduction into full play, thus visibly improving the in-situ nitrogen control effect for decoupled combustion. 漏 2021, Editorial Board of CIESC Journal. All right reserved. |
| 学科主题 | Pyrolysis |
| 出版者 | Materials China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/60301]  |
| 作者单位 | 1.School of Ecology and Environment, Beijing Technology and Business University, Beijing; 100048, China 2.School of Mechanical and Power Engineering, Shenyang University of Chemical Technology, Shenyang; 110142, China 3.State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing; 100190, China |
| 推荐引用方式 GB/T 7714 | Wang, Wenyan,Zhang, Guangyi,Meng, Huibo,et al. Furfural residue pyrolysis characteristics and the effect of its pyrolysis products on in-situ control of NOx emission from its combustion flue gas[J]. Huagong Xuebao/CIESC Journal,2021,72(11):5770-5778. |
| APA | Wang, Wenyan,Zhang, Guangyi,Meng, Huibo,Zhu, Xinyu,Zhang, Jianling,&Xu, Guangwen.(2021).Furfural residue pyrolysis characteristics and the effect of its pyrolysis products on in-situ control of NOx emission from its combustion flue gas.Huagong Xuebao/CIESC Journal,72(11),5770-5778. |
| MLA | Wang, Wenyan,et al."Furfural residue pyrolysis characteristics and the effect of its pyrolysis products on in-situ control of NOx emission from its combustion flue gas".Huagong Xuebao/CIESC Journal 72.11(2021):5770-5778. |
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来源：过程工程研究所
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