Aspen_石油炼制60问_翻译.docx
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1. Aspen Plus does not generate distillation curves for a stream containing 4 pseudo-components. Why? To generate a distillation curve, a stream must contain at least 5 pseudo-components of non-zero flow to generate distinctive data points at 10%, 30%, 50%, 70, 90%.
% K: Q7 G" q* @, }Aspen 为什么不能生成一个物流中包含4个蒸馏点的虚拟组分的蒸馏曲线?
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答:生成一个蒸馏曲线,一个虚拟组分必须至少包含5个非零蒸馏数据,分别是:10%, 30%, 50%, 70, 90% 2. For streams with significant amount of light components, the calculated Reid vapor pressure is usually off. Why is that? Are there any guidelines for using Reid vapor pressure? 对一个含有大量轻组分的物流,为什么通常计算雷德蒸汽压通常会失败?是否有关于使用雷德蒸汽压的一些指导? Reid vapor pressure is the absolute pressure exerted by a mixture (in pounds per square inch)determined at 100 F and at a vapor-to-liquid volume ratio of 4 (ASTM Method D 323). RVP is intended for characterizing the volatility of gasoline and crude oil, with a typical range of 1 to 20 psia. Out of this range,the accuracy may be poor. Therefore, RDV should not be applied to very light or very heavy streams. 雷德蒸汽压是一个混合物在100F温度和气-液比为4的时候的绝对压力(磅每平方英寸)。雷德蒸汽压是用于表征1-20psia范围内汽油和原油的相对挥发度。当超出这个范围后,准确性可能不佳。因此,雷德蒸汽压不适用非常轻或非常重的物流。 ··········································
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