文章"溶剂油的分离模拟"是否出错? 1、是你所谓“astm d86 标准就是一种蒸馏实验标准啊，出来的数据也是实验数据啊”，只是想说不管是计算数据还是实验数据都无所谓，这是概念错误！ 2、api度，也叫比重指数，用来表示液体的相对密度， api=141.5/p - 131.5 (p为油品相对密度，是15.6摄氏度的油品密度与15.6摄氏度水的密度的比值）。proii里api 1987和api 1994 distillation curve interconversions计算方法有差别，不知道和api度有没有关系？如果没有关系那是我上面说错了。但底下的红色说明很好地说明了这个问题。 api 1994 this is the method detailed in the 1994 api technical data book which was developed by daubert, t.e.. this method uses an approach similiar to that of the api 1963 procedure, which always produces a monotonic tbp curve. reference: daubert, t.e., hydrocarbon processing , september - 1994, pp 74-78. api 1987 this is the method published in the 1987 api technical data book which was developed by riazi and daubert. the following equation is used to convert each d86 temperature to a tbp temperature: 公式见下帖，呵呵 where: a, b = constants for each standard volume percent and tbp and d86 are deg r. 表格见下帖 note : this method is reputed to be more accurate than older methods by statistical comparisons. however it is important to note that the point by point approach does not guarantee that the tbp curve produced will be monotonic, especially for narrow boiling stocks. should a non-monotonic curve be predicted for a stock, it is recommended that one of the other conversion methods be used. reference: riazi m.r. and daubert, t.e., oil and gas journal , august 25, 1986, pp 50-57. [ ]查看更多
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