Abstract
In order to study the influence of accidental leakage of liquid chlorine cylinder and chlorine diffusion, a 3D model of liquid chlorine cylinder for leakage diffusion is established according to the actual situation of chemical enterprises. Based on computational fluid dynamics (CFD) method, numerical simulation for chlorine diffusion in open space is carried out, and the influence of velocity on the leakage and diffusion of chlorine is discussed. Computing method is quantified by simulation results and poisoning accidents. Individual risk and social risk are used to characterize the risk size of the risk acceptor exposed to a particular risk field, which serve as a basis for determining whether the risk can be accepted. The results show that the external wind speed has a great influence on the chlorine leakage and diffusion process. The risk of death at each monitoring point gradually increases with time, and then the growth rate became stable.
