A Study on Leakage Diffusion of Gasoline Tanks by 3D Dynamics Model

doi:10.11885/j.issn.1674-5086.2020.05.26.02

Abstract

Abstract: The largest number of vertical internal floating roof tanks in the refined oil station is 10 000 m³, In order to study the diffusion behavior of gasoline leakage and consider the influence between adjacent tanks, a 3D model of tanks is established according to the standard by FLACS software. Based on the pool model in FLACS, the diffusion behavior of pool and combustible gas cloud under the influence of different leakage rate, temperature and wind speed are discussed, respectively. The results show that the diffusion of pool and gas cloud in the double tanks is mainly restricted by the adjacent tank. Then, as in the single tank farm, it is restrained by fire dike. The severity of the disaster after gasoline leakage is evaluated according to the size of the pool and the furthest distance of combustible gas diffusion in 30 s. It is found that the greater the leakage rate, the smaller and stable the wind speed, the faster the diffusion speed of pool and combustible gas cloud, the higher the risk degree, while the temperature has little impact on the expansion of pool and gas cloud diffusion. Combined with the real-time gas concentration information of the monitoring point and the relevant provisions of GB 50493--2019, it is suggested that the combustible gas detector in the tank farm should be set near the leakage source with a height of 0.3 m.

Key words: gasoline tanks, pool, combustible gas, 3D dynamic model, leakage diffusion

CLC Number:

TE22

ZHANG Zhijian, WANG Xu, LIAO Kexi, ZENG Zhaoxiong, WEN Jing. A Study on Leakage Diffusion of Gasoline Tanks by 3D Dynamics Model[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2022, 44(5): 135-150.

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URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.11885/j.issn.1674-5086.2020.05.26.02

http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2022/V44/I5/135

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