【摘要】 为提高原油贮存过程的安全，采用fluent模拟2、4、6个贮罐在外界风干扰下不同排放浓度的油气，通过呼吸阀正常排放在罐组形成的爆炸危险性区域及所需监测时间。结果表明：通过呼吸阀的排放危险性随着补氮程度的增大而减小，形成爆炸危险所需的时间随之增大。外界风速在罐顶形成的旋涡对罐组内各个罐顶呼吸阀均起到顺风向加速扩散和稀释作用，风速越大，加速扩散和稀释作用越强，顺风向距离罐顶中心越大稀释作用增长速度强于加速扩散。罐组内各个罐底安装的针对呼吸阀排放危险性的监测设备无法有效监测，呼吸阀排放的爆炸下限浓度监测以顺风向为主，两侧的1号罐体后有罐体干扰时能够纵向扩散但扩散效果有限。距离罐顶中心0.1 m处安装的监测设备监测效果最好，罐外监测设备应优先考虑罐顶中心位置，监测到危险浓度应采取综合措施治理。更多还原

【Abstract】 To enhance the safety of crude oil storage process, a simulation was conducted using Fluent to analyze the emission concentrations of oil and gas from 2, 4, and 6 storage tanks under external wind interference. The oil and gas were normally discharged through the breathing valve within the explosive hazardous area formed by the tank group, and the required monitoring time was evaluated. The results indicate that the emission hazard from the breathing valve decreases as the nitrogen supplementation level increases, with a corresponding extension in the time required for an explosive hazard to develop. The vortex formed by the external wind speed at the top of the tank accelerates the diffusion and dilution in the downwind direction for each breathing valve on the top of the tanks within the tank group. Higher wind speed strengthens these accelerated diffusion and dilution effects. As the distance downwind from the center of the tank top increases, the dilution effect grows more rapidly than the accelerated diffusion. The monitoring equipment installed at the bottom of each tank in the group was found to be ineffective in detecting breathing valve emission hazards. The monitoring of the lower explosive limit concentration of breathing valve emissions primarily occurs in the downwind direction. When there is tank interference on both sides behind the No.1 tank, longitudinal diffusion occurs, though the effect is limited. The optimal monitoring performance was achieved with equipment installed 0.1 m from the center of the tank top. For external tank monitoring, priority should be given to the center of the tank top, and comprehensive measures should be implemented to control detected hazardous concentrations.更多还原