Although distillation is usually known as the first process in petroleum refineries, in many cases, desalting should take place before distillation (Figure 3.1). Salt dissolved in water (brine) enters the crude stream as a contaminant during the production or transportation of oil to refineries.

Atmospheric distillation typically sets the capacity limit for the entire refinery. All crude oil processed must first go through atmospheric distillation. 15 Jul 2019 The results were converted to true boiling point (ASTM D2892) according to the and common petroleum refining correlations were employed. Crude distillation overhead system is the compartment of a refinery where the separation of crude oil into their diverse fractions take place. It is known in the  The atmospheric distillation column is believed to be the biggest unit in a petroleum refinery as it can process up to 200,000 barrels of oil per day with a height of  4 Dec 2019 The crude distillation column for the Dangote oil refinery near Lagos Source: Dangote Industries Ltd. 21 Jan 2020 Meanwhile, the total distillation capacity of all refineries combined increased from a low of 14.4 million barrels per calendar day in 1985 to a high 

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