| 内浮顶油罐“小呼吸”对环境影响过程的分析 |
| 摘要点击 1445 全文点击 1227 投稿时间：2013-07-01 修订日期：2013-07-22 |
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| 中文关键词 油气浓度 浓度梯度 温度梯度 分子扩散 热扩散 |
| 英文关键词 VOCs concentration concentration gradient temperature gradient molecule diffusion thermal diffusion |
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| 中文摘要 |
| 内浮顶油罐结合了外浮顶油罐和拱顶油罐的优点,具有特定的蒸发损耗特点. 利用自制的内浮顶油罐实验平台,研究了油罐内气体空间里的油气浓度的分布梯度、分子扩散、热扩散、强迫对流等作用对油品蒸发损耗的影响. 结果表明,内浮顶油罐的"小呼吸"损耗,主要是受到温度变化引起的油气分子热扩散作用的影响. 在此基础上,本研究提出了相关的降低蒸发损耗的措施以及内浮顶油罐蒸发损耗的计算公式. |
| 英文摘要 |
| Internal floating roof tank has the advantages of external floating roof tank and fixed roof tank and has its own evaporation loss properties. The influences of volatile organic compounds (VOCs) distribution gradient, molecular diffusion, thermal diffusion and forced convection on the evaporation loss of oil were studied in the space of the homemade platform of an internal floating roof tank. The results showed that thermal diffusion with temperature change was the main cause for the static loss in the internal floating roof tank. On this basis, there were some measures for reduction of the evaporation loss and formulas to calculate the evaporation loss of the internal floating roof tank in this research. |
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