Causes of vibration in the oil transfer line and solutions
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Vibration occurs in the pipeline running from the outlet of the crude oil heat exchange network in the atmospheric and vacuum distillation unit to the inlet of the flash tower. The preliminary assumption is that vaporization of the crude oil takes place inside the heat exchanger or the pipeline, resulting in two-phase flow. I wonder if similar problems have occurred in the atmospheric and vacuum distillation units where you are working What are the causes of the problem and the solutions? Thank you all for your participation! :The more discussions on handshake, the better :) Those of you who have used Fluent to simulate two-phase flow of crude oil can also come and share their insights to offer guidance! This post was last edited by ce#ang on 2009-3-15 19:10]
Generally, it is caused by water in the raw material; just turn on the electrodialysis function. In addition, enhance the dewatering in the tank area.
Most commonly, it is vibration in the oil transfer line from the vacuum furnace to the vacuum tower, or it is due to gasification. I have experienced gasification vibrations in the pipelines from heat exchangers to towers on many occasions, and addressing such issues requires focusing on eliminating the gasification-liquidation process.
Could the original poster explain in more detail how to work around the concept of vaporization-liquefaction? What are the specific measures? The process conditions cannot be changed; then how should the equipment be modified?
The reason for vaporization should be identifiable through operational considerations; in my previous setup, there was no electrical desalination, and when the water content was high, the entire pipeline would vibrate severely. When the pressure in the heat exchanger reaches 22 kilograms, it is possible only to reduce the flow rate to maintain operation or replace the tank.
Thank you! The original poster’s analysis is correct; the problem now is that the electrodesalination system is operating well :) It’s possible that the crude oil has vaporized inside the pipelines or heat exchangers. I wonder if there’s any way to determine, calculate, or simulate where the vibrations are occurring
The oil transfer line is definitely in a gas-liquid two-phase state; the key lies in whether the design is reasonable.
Pipelines that vibrate should be secured with a U-shaped clamp, which helps to reduce vibration
Is it because the spring suspension brackets aren’t properly designed or there aren’t enough clamps? First, ensure that no vibrations occur in those sections of the pipeline, and then analyze the underlying operational reasons!