Numerical Simulation of Oxy-Fuel Combustion with Different O-2/CO2 Fractions in a Large Cement Precalciner

doi:10.1021/acs.energyfuels.9b04237

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	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
刊名	ENERGY & FUELS
	2020-04-16
卷号	34 期号:4 页码:4949-4957
ISSN号	0887-0624
DOI	10.1021/acs.energyfuels.9b04237
通讯作者	Wei, Xiaolin(xlwei@imech.ac.cn)
英文摘要	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)).
分类号	二类
资助项目	Key Research and Development Plan of China[2016YFB0601501]
WOS关键词	COAL COMBUSTION ; RADIATION ; EMISSIONS ; GAS
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
WOS记录号	WOS:000526324100088
资助机构	Key Research and Development Plan of China
其他责任者	Wei, Xiaolin
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/81873]
专题	力学研究所_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.