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油罐储存凝点较高或黏度较大的油品时需采取保温伴热措施。为了确定单盘式浮顶罐的保温伴热设计方案,结合传热学理论,考虑浮顶单盘下油气空间的热阻,建立了油罐保温伴热模型。以5×104m3单盘式浮顶罐为例,设计了油罐的保温伴热方案,并在此基础上建立了油罐二维模型,采用CFD方法对油品的流动和传热过程进行了仿真模拟。研究表明:单盘式浮顶罐的罐顶不需要采取保温措施,单盘下少量的油气空间保温效果显著;罐内油品的温度差造成密度差,使油品处于循环流动状态;除靠近伴热器、罐顶和罐壁的区域外,罐内绝大部分区域油温分布均匀。研究成果为单盘式浮顶罐的保温伴热设计提供了参考方案。
Tank storage freezing point higher viscosity or larger oil products need to take heat tracing measures. In order to determine the design scheme of thermal insulation and heat transfer for single-plate floating roof cans, the thermal insulation model of the thermal insulation of the oil tank is established considering the thermal resistance theory and considering the thermal resistance of the oil and gas space under the single floating roof. Taking a 5 × 104m3 single-plate floating roof tank as an example, the thermal insulation scheme of the oil tank is designed. Based on this, a two-dimensional model of the oil tank is established. The flow and heat transfer process of the oil are carried out by the CFD method Simulation. The research shows that the roof of a single-plate floating roof tank does not need to be insulated and a small amount of oil and gas space under a single plate has a significant heat insulation effect. The density difference caused by the temperature difference of the oil in the tank causes the oil to circulate and flow. Heater, tank top and tank wall area, the vast majority of tank oil temperature distribution. The research results provide a reference scheme for the thermal insulation heat tracing design of single-plate floating roof tank.