After the 70s energy crisis the revamping of plants designed before this date is very attractive for improving energy recovery and lowering operation costs. A typical case is the oil refinery plant where an intensive usage of energy takes place and is a promising case for the application of energy saving solutions. In this work we focused our attention to an industrial crude oil distillation unit, evaluating the possibility to modify the feed conditions by installing a preflash drum or a preflash plate column. Real data plant were collected to obtain a reliable simulation of the unit by means of the software package Aspen Plus 13.0. To characterize the crude oil fed the TBP curve was used. The results obtained were compared with the plant data in terms of flow rate and product quality utilizing the ASTM D-86 curves and a good agreement was obtained. According to the specialized literature the preflash drum/column was placed at the end of the pre-heat train, just before the column furnace. The furnace is the bottleneck of the plant and with both the preflash devices it is possible to lower its energy consumption. However the energy reduction is associated to the decrease of one kind of distillates (light or middle). The choice of the best preflash device was made according to the production asset of the plant. (C) 2008 Elsevier Ltd. All rights reserved.
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机译:在70年代能源危机之后,在此日期之前设计的电厂改造对于提高能源回收率和降低运营成本非常有吸引力。一个典型的案例是炼油厂,那里大量使用能源,对于应用节能解决方案来说是一个很有前途的案例。在这项工作中,我们将注意力集中在工业原油蒸馏装置上,评估通过安装预闪蒸鼓或预闪蒸塔板塔来改变进料条件的可能性。通过软件包Aspen Plus 13.0,收集了真实的数据工厂,以获得可靠的设备模拟。为了表征进料的原油,使用了TBP曲线。利用ASTM D-86曲线将所获得的结果在流速和产品质量方面与工厂数据进行了比较,并获得了良好的一致性。根据专业文献,将预闪蒸鼓/柱放在预热机组的末端,就在柱式炉之前。熔炉是工厂的瓶颈,使用两个预闪设备可以降低其能耗。但是,能量的减少与一种馏出物(轻馏分或中间馏分)的减少有关。根据工厂的生产资产选择最佳的预闪设备。 (C)2008 Elsevier Ltd.保留所有权利。
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