Why Wet Crude Needs Surge Vessel And Dehydrator Desalter

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In summary, wet crude and dry crude differ in water content and require different processing steps, such as the use of a surge vessel, dehydrator, and desalter, to ensure the quality of the crude oil.
  • #1
ahmadss
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Hi
We have 2 type of crude wet crude and dry crude .
My questions is
1- is the different between these 2 is the water percentage ? is this the only different ?
2- During the separation the crude the dry crude go through the separators then to boot then to flow suction tank.
but why the wet crude have to go through a surge vessel then to hydrator desalter , what’s the function of surge vessel and the dehydrator and why it must go through these 2
 
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  • #2
?1- Yes, the main difference between wet and dry crude is the water content. Wet crude is usually composed of more than 10% water, whereas dry crude contains less than 10% water. Other differences include viscosity, density, and sulfur content.2- The surge vessel in a wet crude system is used to ensure that the crude is processed and separated at a consistent rate. The dehydrator is used to remove any water that may be present in the crude, while the desalter is used to remove any impurities or contaminants. This helps to ensure that the crude oil is clean and ready for further processing.
 

1. Why is a surge vessel necessary for wet crude?

A surge vessel is necessary for wet crude because it helps to regulate the flow of the crude oil as it enters the processing system. Wet crude often contains a high amount of water, which can cause the oil to foam or emulsify. A surge vessel allows for the separation of this water from the crude oil, ensuring a more stable and consistent flow.

2. What is the purpose of a dehydrator desalter in the processing of wet crude?

A dehydrator desalter is used to remove water and other impurities from wet crude. This process is necessary to prevent corrosion and damage to equipment, as well as to improve the quality of the crude oil. The dehydrator desalter removes water through a heating and settling process, while also removing impurities such as salts and sediment.

3. Can wet crude be processed without a surge vessel and dehydrator desalter?

In most cases, it is not recommended to process wet crude without a surge vessel and dehydrator desalter. The high water content and impurities in wet crude can cause equipment corrosion and damage, as well as hinder the efficiency of the processing system. The use of a surge vessel and dehydrator desalter ensures a more efficient and effective processing of wet crude.

4. How does a surge vessel and dehydrator desalter affect the overall cost of processing wet crude?

The use of a surge vessel and dehydrator desalter can increase the overall cost of processing wet crude due to the additional equipment and energy required for their operation. However, the benefits of using these systems, such as improved crude quality and reduced equipment damage, can ultimately lead to cost savings in the long run.

5. Are there any safety concerns associated with the use of a surge vessel and dehydrator desalter?

The use of a surge vessel and dehydrator desalter does not pose any significant safety concerns. However, proper maintenance and operation of these systems are crucial to ensure safe and efficient processing of wet crude. Regular inspections and following safety protocols can help mitigate any potential risks associated with these systems.

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