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Research Article
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Environmental Diffusion Analysis and Consequence Prediction of Liquefied Ammonia Leakage Accident
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Shuxia Li,
Liping Liu,
Tijun Fan
and
Huan Cao
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ABSTRACT
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The demand for the industry chemicals, which serve as the main material
and product of heavy industries, has seen a dramatic increase with the development
of industrialization and transportation. Meanwhile, dangerous chemicals accidents
such as liquefied ammonia leakage occasionally happen due to operational uncertainty,
which will do great harm to people and animals because of their hazardous characteristics.
In this study, the overall diffusion process of the hypothesized liquefied ammonia
leaking accident is firstly analyzed. Then, source density and flash strength
are calculated which proves that the diffusion of liquefied ammonia leakage
transforms from heavy gas to non-heavy gas in specified time. Furthermore, influence
range of gas cloud, concentration change of some fixed point and flammable and
explosive region are predicted based on Aloha. Through the consequence prediction,
factors in terms of distance from leakage source, wind speed, stability of environment
and ground roughness are compared, according to which it can be inferred that
the cloud concentration is split into two centers in initial state and cloud
tailing with wind exists.
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