Distillation of crude oil is carried out in two units, first in an Atmospheric Distillation Unit (also known as Crude Distillation Unit, CDU), with further processing of the residue from atmospheric distillation in the Vacuum Distillation Unit (VDU), as illustrated in Figure 4.2.

2024年2月10日 · In this work, a surrogate-assisted methodology is developed to capture the relationship between input and output responses of the VDU and thus predicted the complex behaviour of the VDU. The constructed surrogate models are then integrated into the multi-objective mathematical optimisation model to determine the trade-off between HVGO yield and ...

2022年2月14日 · The optimization of deep-cut vacuum distillation seeks to improve the yield of heavy vacuum gas oil (HVGO) and its dry point temperature, which is related to the economic benefits of the refinery. In this study, we first established a simple model of a VDU by using the Aspen HYSYS Process simulation software.

2024年5月1日 · Vacuum distillation unit (VDU) is a typical refinery process that aids in the recovery of higher boiling gas oil from atmospheric column residue [1]. Higher efficiency and less costs are attained by fractionating crude oil in two steps: First, the entire crude oil is distilled at near atmospheric pressure, then the heaviest fraction usually ...

2024年8月2日 · This work presents the rigorous simulation of a vacuum distillation unit (VDU) based on actual data from the vacuum distillation processes using Aspen HYSYS V10. The Peng–Robinson fluid package is used in this simulation, and an input assay with a standard density of 29 API_60 (879.8 kg/m3) is employed.

To ensure the optimum performance of downstream processes in a petrochemical refinery, the operation of a vacuum distil-lation unit (VDU) is critical. It needs to satisfy the yield and quality requirements of the downstream process. Otherwise, it will result in …

2012年4月18日 · Model Applications to Process Optimization – VDU Deep-Cut Operation Workshop – Using Aspen HYSYS Petroleum Refining to Implement the Deep-Cut Operation References

The vacuum distillation unit works on the principle that the residuum feed boils and separates under vacuum at a lower temperature without thermal cracking or degradation of the original hydrocarbons present in crude oil.

2021年10月5日 · 本文档详细介绍了如何配置两台交换机组成虚拟堆叠单元（vsu），通过0/55和0/56口建立堆叠，0/41和0/42口配置bfd检测实现双活。步骤包括设置交换机优先级、创建堆叠端口、启用bfd并在检测口应用，最后聚合管理口并配置ip地址，确保vsu状态和bfd检测正常。

About 80% of the refineries operating in the United States have a vacuum distillation unit (VDU), a secondary processing unit consisting of vacuum distillation columns. Vacuum distillation is a part of the refining process that helps to produce …