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Characteristics of Leakage and Diffusion for a Chlorine Storage Tank Based on Simulation
ACS Chemical Health & Safety ( IF 2.9 ) Pub Date : 2021-08-05 , DOI: 10.1021/acs.chas.1c00031 Wenhe Wang 1, 2 , Dan Mou 1 , Baojiang Sun 1 , Chengzhi Zhu 1 , Hongfu Mi 1
ACS Chemical Health & Safety ( IF 2.9 ) Pub Date : 2021-08-05 , DOI: 10.1021/acs.chas.1c00031 Wenhe Wang 1, 2 , Dan Mou 1 , Baojiang Sun 1 , Chengzhi Zhu 1 , Hongfu Mi 1
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In order to study the influence of accidental leakage of a chlorine tank and chlorine diffusion, a 3D model of leakage and diffusion of a chlorine tank was established according to the actual scene of a Chlor-alkali workshop in chemical enterprises. Based on the computational fluid dynamics (CFD) method, the chlorine diffusion in an open space was numerically simulated. The influence of topography, leakage location, and discharge source form on the leakage, and diffusion of chlorine was discussed. The results show that the concentration difference of chlorine leakage diffusion at 100 s between a flat terrain and a complex terrain is about 4590 times, and the existence of obstacles is not conducive to the flow and diffusion of chlorine. Under the same external conditions, the diffusion rate of chlorine leakage at the top and middle of the first 30 s is faster than that at the bottom, and the influence range of chlorine leakage at the top of the tank is larger. The concentration difference between continuous leakage and instantaneous leakage at 100 s is 4 × 107 times, and the harm of continuous leakage to the human body is much greater than that of an instantaneous leakage.
中文翻译：
基于仿真的储氯罐泄漏和扩散特性
为了研究氯罐意外泄漏和氯气扩散的影响，根据化工企业氯碱车间的实际场景，建立了氯罐泄漏和扩散的3D模型。基于计算流体动力学（CFD）方法，对开放空间中的氯扩散进行了数值模拟。讨论了地形、泄漏位置和放电源形式对氯的泄漏和扩散的影响。结果表明，平坦地形与复杂地形之间100 s时氯气泄漏扩散的浓度差约为4590倍，且障碍物的存在不利于氯气的流动和扩散。在相同的外部条件下，前30 s顶部和中部漏氯扩散速度比底部快，罐顶漏氯影响范围较大。100 s 时连续泄漏与瞬时泄漏的浓度差为 4 × 107倍，连续泄漏对人体的危害远大于瞬间泄漏。
更新日期：2021-08-05
中文翻译：
基于仿真的储氯罐泄漏和扩散特性
为了研究氯罐意外泄漏和氯气扩散的影响，根据化工企业氯碱车间的实际场景，建立了氯罐泄漏和扩散的3D模型。基于计算流体动力学（CFD）方法，对开放空间中的氯扩散进行了数值模拟。讨论了地形、泄漏位置和放电源形式对氯的泄漏和扩散的影响。结果表明，平坦地形与复杂地形之间100 s时氯气泄漏扩散的浓度差约为4590倍，且障碍物的存在不利于氯气的流动和扩散。在相同的外部条件下，前30 s顶部和中部漏氯扩散速度比底部快，罐顶漏氯影响范围较大。100 s 时连续泄漏与瞬时泄漏的浓度差为 4 × 107倍，连续泄漏对人体的危害远大于瞬间泄漏。
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