| Modeling De-NOx by Injection Ammonia in High Temperature Zone of Cement Precalciner | |
Zhang LY(张乐宇); Wei XL(魏小林) ; Zhang ZX; Li S(李森)
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| Source Publication | JOURNAL OF THERMAL SCIENCE
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| 2020 | |
| ISSN | 1003-2169 |
| Abstract | The quantity of NOx emission from cement production is second only to thermal power generation and vehicle exhaust. In this paper, a phenomenon found by Taniguchi is used to achieve NOx reduction in the cement precalciner. Based on his results, it is proposed to reduce NOx that ammonia is injected in the high-temperature and lean-oxygen zone (HT-DeNO(x)) during pulverized coal combustion. For a large cement precalciner (3200 t/d), numerical simulation is used to evaluate the technology of HT-DeNO(x) combined with the traditional selective non-catalytic reduction (SNCR) method. The results indicate that NH3 and HCN in HT-DeNO(x) can reduce NO during the reaction process. With very little ammonia injection (normalized stoichiometric ratio NSR=0.1, the normalized stoichiometric ratio), the efficiency of NO reduction by HT-DeNO(x) is 27.72%. Combining SNCR (NSR=1.1) and HT-DeNO(x) (NSR=0.1), the reduction efficiency will be improved to 60.05%, compared with 50.83% efficiency when using only SNCR at NSR=1.2. |
| Keyword | cement precalciner SELECTIVE NONCATALYTIC REDUCTION coal combustion NUMERICAL-SIMULATION CaCO3 decomposition SNCR high temperature zone COMBUSTION SNCR OPTIMIZATION |
| DOI | 10.1007/s11630-020-1324-0 |
| Indexed By | SCI ; EI ; CSCD |
| Language | 英语 |
| WOS ID | WOS:000583155300001 |
| WOS Research Area | Thermodynamics ; Engineering |
| WOS Subject | Thermodynamics ; Engineering, Mechanical |
| Funding Organization | key Research and Development Plan of China [2016YFB0601503} |
| Classification | 二类 |
| Ranking | 1 |
| Contributor | Wei, XL ; Zhang, ZX |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/85434 |
| Collection | 高温气体动力学国家重点实验室 |
| Affiliation | 1.{Zhang Leyu, Wei Xiaolin, Li Sen} Chinese Acad Sci Inst Mech Beijing 100190 Peoples R China 2.{Wei Xiaolin} Univ Chinese Acad Sci Sch Engn Sci Beijing 100190 Peoples R China 3.{Zhang Leyu, Zhang Zhongxiao} Univ Shanghai Sci & Technol Sch Environm & Architecture Shanghai 200093 Peoples R China |
| Recommended Citation GB/T 7714 | Zhang LY,Wei XL,Zhang ZX,et al. Modeling De-NOx by Injection Ammonia in High Temperature Zone of Cement Precalciner[J]. JOURNAL OF THERMAL SCIENCE,2020.Rp_Au:Wei, XL, Zhang, ZX |
| APA | 张乐宇,魏小林,Zhang ZX,&李森.(2020).Modeling De-NOx by Injection Ammonia in High Temperature Zone of Cement Precalciner.JOURNAL OF THERMAL SCIENCE. |
| MLA | 张乐宇,et al."Modeling De-NOx by Injection Ammonia in High Temperature Zone of Cement Precalciner".JOURNAL OF THERMAL SCIENCE (2020). |
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| Jp2020394.pdf（1220KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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