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在某凝析油炼制作业场所的案例中,采用FLUENT计算机模拟方法预测复杂场景下环境中苯的外暴露浓度,并利用SPSS软件处理浓度数据,得到空气中污染物的浓度场分布。利用蒙特卡洛模拟软件MCSim建立苯的生理药代动力学模型,将浓度分布数据代入模型求解,以预测工人体内各器官中苯及其代谢物质的内剂量浓度和致癌风险范围。在装置区8个点发生跑冒滴漏并正常采样的条件下,如果不采取个体防护,1#常减压生产装置区工人的致癌风险在10-3~10-2,高于可接受风险的水平,因此需要采取相关措施降低风险。
In a case of condensate refining operation, a computer simulation of FLUENT was used to predict the level of benzene exposure in a complex environment and the concentration of pollutants in the air was obtained by SPSS software. The physico-pharmacokinetic model of benzene was established by Monte Carlo simulation software MCSim, and the concentration distribution data were substituted into the model solution to predict the internal dose concentration and carcinogenic risk range of benzene and its metabolites in various organs of workers. Under the conditions of dripping and dripping at 8 points in the installation area and normal sampling, if the personal protection is not adopted, the carcinogenic risk of the workers in the installation of atmospheric pressure and vacuum distillation unit 1 is 10-3 ~ 10-2, which is higher than the acceptable risk Therefore, relevant measures need to be taken to reduce the risk.