浮顶罐长期储存油温度场模拟研究

Simulation Study on Temperature Field of Long-term Oil Storage in Floating Roof Tank

提出了一项对外浮顶罐挥发性有机化合物的长期排放测量结果。该储罐的容量为12000m^(3)并用于储存商业可用的汽油,由于密封不完善和在提取过程中形成润滑膜,排放挥发性化合物,因此必须假设地层的非零概率易燃气体的可燃浓度,对导致爆炸性气体区域分类。使用适当的红外(IR)检测器网络监测代表性的外浮顶罐,同时使用高分辨率光电离检测器(PID)进行测量。目的是根据实际排放记录爆炸性气体区域分类的数据,可能允许将1区重新分级为2区分类位置。

The results of a long-term emission measurement of volatile organic compounds emitted by a single-hull floating-roof tank were presented.The tank has a capacity of 12000 m3 and is used to stock commercially available gasoline.Due to imperfect seals and the formation of lubricating films during withdrawal,subsequent emissions of volatile compounds have to be expected.Therefore,a non-zero probability has to be assumed for the formation of ignitable concentrations of flammable gases,resulting in according an explosive gas area classification.Here a representative single-hull floating-roof tank was monitored using an appropriate network of infrared(IR)detectors,accompanied with measurements using a high resolution photoionization detector(PID).Measured values have been compared to the expectations estimated applying the API 2517/2519 and the VDI 3479 standards.The aim is to record data for an explosive gas area classification based on actual emissions,potentially allowing for a regarding of zone 1 to zone 2 classified locations.