基于ALOHA软件的气象条件对液氯扩散影响的研究

Study on the influences of meteorological conditions on the liquid chlorine leakage and diffusion based on ALOHA software

以ALOHA软件作为研究工具,典型环境风险物质液氯作为研究对象,对不同气象参数(大气稳定度、风俗、温度和湿度)对液氯扩散的影响程度进行了分析筛选。在模拟条件下,风速和大气稳定度是影响液氯扩散的主要因素,温度次之,湿度对于液氯扩散几无影响。因此当数据缺乏时,为有效避免有毒有害气体造成的环境风险,应用ALOHA软件模拟应选用的最不利气象条件为:风速为1.5 m/s,温度为当日最高气温,白天稳定度选择D,夜晚稳定度选择F。

By using ALOHA software as the research tool, and typical toxic and harmful chemical liquid chlorine as research object, the influences of different meteorological parameters（ atmospheric stability customs, emperature and humidity）on the diffusion of liquid chlorine were simulated and screened. Under the simulation condition, wind speed and atmospheric stability were the main influence factors, temperature took the second place, and the influence of humidity could be neglected. When data are lacking, the worst-case simulation factors that would provide reference for environmental risk assessment of toxic and harmful chemicals are as follows：wind speed is 1.5 m / s, temperature is the maximum temperature of the day, atmospheric stability in daytime and night are D and F respectively.