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 …

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 …

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

2024年12月9日 · 掌握VRRP与 BFD 联动的配置方法. 1. 设备重命名以及 IP地址 的配置. 2. 配置IGP. 3. 配置VRRP. 4. 配置BFD. 5. 在AR1上查看VRRP信息. 6. 在PC1上tracert 3.3.3.3. 7. 关闭AR3的g0/0/0接口后再次在AR1上查看VRRP的. 查看R1的VRRP信息。 然后在PC1上跟踪3.3.3.3。 关闭R3的接口。 然后再次在R1上再次查看VRRP的信息。 可以看到R1变成了Backup，因为链路出现了故障，其优先级从200变成了80。 在PC1上跟踪，可以看出是通过R2跟踪成功的。 综 …

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。

BLOCK DIAGRAM OF HMEL REFINERY CHAPTER 2: VARIOUS UNITS AND THEIR CONFIGURATIONS CDU/VDU plant details: Unit objective: To separate crude oil into different products by boiling point differences & prepare feed for secondary processing units.