Numerical Simulation of Oxy-Fuel Combustion with Different O-2/CO2 Fractions in a Large Cement Precalciner | |
Zhang LY(张乐宇)1; Wei XL(魏小林)1,2; Zhao J(赵京)1; Li S(李森)1 | |
通讯作者 | Wei, Xiaolin(xlwei@imech.ac.cn) |
发表期刊 | ENERGY & FUELS |
2020-04-16 | |
卷号 | 34期号:4页码:4949-4957 |
ISSN | 0887-0624 |
摘要 | The cement industry is one of the world's largest sources of the anthropogenic CO2 emissions. Thus, it is very urgent to develop new methods to reduce CO2 emissions produced by the cement production. In this paper, the oxy-fuel combustion in large-scale cement precalciners was investigated by the large-scale parallel computational fluid dynamics (CFD) numerical simulations. The effects of pulverized coal combustion on the distribution of the velocity field, temperature field, material components, and NOx concentration were analyzed under O-2/CO2 molar fractions of 21/79, 25/75, 29/71, 33/67, and 37/63. The results showed that the peak of the temperature is gradually increased, which was beneficial for the decomposition of CaCO3. The high-purity CO2 at the outlet can be captured and recycled directly to reduce CO2 emission. Moreover, the relatively pure CO2 atmosphere in the furnace significantly reduced the thermal NOx. The concentration of NO (125-189 mg/m(3)) during the O-2/CO2 combustion was much lower than that of conventional air combustion (>800 mg/m(3)). |
DOI | 10.1021/acs.energyfuels.9b04237 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000526324100088 |
关键词[WOS] | COAL COMBUSTION ; RADIATION ; EMISSIONS ; GAS |
WOS研究方向 | Energy & Fuels ; Engineering |
WOS类目 | Energy & Fuels ; Engineering, Chemical |
资助项目 | Key Research and Development Plan of China[2016YFB0601501] |
项目资助者 | Key Research and Development Plan of China |
论文分区 | 二类 |
力学所作者排名 | 1 |
RpAuthor | Wei, Xiaolin |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/81874 |
专题 | 高温气体动力学国家重点实验室 |
作者单位 | 1.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Kinet, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang LY,Wei XL,Zhao J,et al. Numerical Simulation of Oxy-Fuel Combustion with Different O-2/CO2 Fractions in a Large Cement Precalciner[J]. ENERGY & FUELS,2020,34,4,:4949-4957. |
APA | 张乐宇,魏小林,赵京,&李森.(2020).Numerical Simulation of Oxy-Fuel Combustion with Different O-2/CO2 Fractions in a Large Cement Precalciner.ENERGY & FUELS,34(4),4949-4957. |
MLA | 张乐宇,et al."Numerical Simulation of Oxy-Fuel Combustion with Different O-2/CO2 Fractions in a Large Cement Precalciner".ENERGY & FUELS 34.4(2020):4949-4957. |
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