Research on benzene leakage simulation and environmental exposure risk assessment for p-xylene disproportionation unit

doi:10.16265/j.cnki.issn1003-3033.2017.08.014

China Safety Science Journal ›› 2017, Vol. 27 ›› Issue (8): 79-84.doi: 10.16265/j.cnki.issn1003-3033.2017.08.014

• Safety Science of Engineering and Technology • Previous Articles Next Articles

Research on benzene leakage simulation and environmental exposure risk assessment for p-xylene disproportionation unit

YU Jing¹, SHEN Xiaobo², YANG Minglei¹, XIU Guangli², QIAN Feng¹, WANG Jiming³

1 Key Laboratory of Advanced Control and Optimization for Chemical Process, Ministry of Education, East China University of Science and Technology, Shanghai 200237,China;
2 School of Resources and Environmental Engineering, East China university of Science and Technology, Shanghai 200237,China;
3 School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China

Received:2017-04-01 Revised:2017-06-09 Online:2017-08-20 Published:2020-10-13

Abstract

Abstract: Integration of mechanism model with HAZOP methodology is used to quantitatively assess three major failure events for p-xylene disproportionation unit,such as failure of circulation hydrogen. PHAST and ALOHA are used to simulate benzene release and predict concentration distribution for three accidents. Environmental exposure risk index is used to divide the risk areas. The results show that PHAST is more reliable than ALOHA because cloud rising effects and time-varying release rate are considered in PHAST simulation, and that the environmental exposure risk is in the range 10^-5-10^-4.

Key words: benzene, disproportionation unit, process hazard analysis software tool(PHAST), area locations of hazardous atmospheres(ALOHA), consequence simulation, environmental exposure risk, mechanism model

CLC Number:

X937

YU Jing, SHEN Xiaobo, YANG Minglei, XIU Guangli, QIAN Feng, WANG Jiming. Research on benzene leakage simulation and environmental exposure risk assessment for p-xylene disproportionation unit[J]. China Safety Science Journal, 2017, 27(8): 79-84.

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Research on benzene leakage simulation and environmental exposure risk assessment for p-xylene disproportionation unit

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