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DOI	10.1016/j.atmosenv.2021.118399
	Effect of dynamic low DREs from flare combustion on regional ozone pollution during a chemical plant shutdown
	Ge S.; Wang S.; Xu Q.; Ho T.
发表日期	2021
ISSN	1352-2310
卷号	254
英文摘要	The destruction and removal efficiencies (DREs) for industrial flare combustion could be, in reality, less than the supposed standard values of 98%/99% because of various atmospheric and plant operating conditions. Thus, flaring during chemical plant shutdown (CPS) under low DREs would release larger quantities of VOCs and NOx than expected, which might rapidly worsen the regional ozone pollution under solar radiation. Therefore, it is vital to examine the quantity and sensitivity of ozone impacts owing to low DREs for flare combustion rather than standard values. In this paper, effect of dynamic low DREs on regional ozone impacts during CPS flaring has been systematically conducted by coupling Aspen Plus with CAMx modeling and simulation. Case studies indicated that 8-hr ozone caused by CPS flaring under low DREs could range from 6.08 to 7.28 ppb, which was much greater than that based on the standard DREs ranging from 1.8 to 2.19 ppb. This study also demonstrated that the 8-hr ozone increment could be significantly reduced from the maximum of 6.14 ppb to the minimum of 0.85 ppb by starting the CPS operations at the optimal time. Another important finding was that ozone impacts might slightly increase with the increase of flare stack height due to meteorological conditions including high wind speed and strong solar radiation. This study would provide scientific support for quantitative ozone evaluation caused by CPS flare emissions, which will enrich future solutions for cost-effective regional air-quality management and ozone pollution control. © 2021 Elsevier Ltd
关键词	Aspen Plus CAMx Chemical plant shutdown DRE Flare emissions Ozone pollution
语种	英语
scopus关键词	Air quality; Chemical plants; Computer software; Cost effectiveness; Plant shutdowns; Pollution control; Quality control; Solar radiation; Wind; ASPEN PLUS; CAMx; Chemical plant shutdown; Destruction and removal efficiency; Flare combustion; Flare emission; Operating condition; Ozone pollution; Regional ozone pollution; Standard values; Ozone; ozone; air quality; combustion; ozone; pollution control; solar radiation; wind velocity; air pollution; air pollution control; air quality; air quality control; Article; atmospheric pressure; chemical industry; chemical reaction; combustion; cost effectiveness analysis; meteorology; priority journal; safety; simulation; solar radiation; wind speed
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248444
作者单位	School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China; Dan F. Smith Department of Chemical & Biomolecular Engineering, Lamar University, Beaumont, TX 77710, United States; Department of Computer Science, Lamar University, Beaumont, Tx 77710, United States
推荐引用方式 GB/T 7714	Ge S.,Wang S.,Xu Q.,et al. Effect of dynamic low DREs from flare combustion on regional ozone pollution during a chemical plant shutdown[J],2021,254.
APA	Ge S.,Wang S.,Xu Q.,&Ho T..(2021).Effect of dynamic low DREs from flare combustion on regional ozone pollution during a chemical plant shutdown.ATMOSPHERIC ENVIRONMENT,254.
MLA	Ge S.,et al."Effect of dynamic low DREs from flare combustion on regional ozone pollution during a chemical plant shutdown".ATMOSPHERIC ENVIRONMENT 254(2021).