Crude Oil Desalting Process. By Juan Pereira, Ingrid Velasquez, Ronald Blanco, Meraldo Sanchez, César Pernalete and Carlos Canelón. Submitted: October. A desalter is a process unit in an oil refinery that removes salt from the crude oil. The salt is dissolved in the water in the crude oil, not in the crude oil itself. The desalting is usually the first process in crude oil refining. If salt is not removed from crude oil, serious damage can result, especially in the Desalting and fractional distillation of crude oil schematic as described in text.

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Minimizing refinery costs using spiral heat exchangers kB. Economics of treating emulsions.

Reducing the salt content of the treated crude oil to acceptable levels creates high fouling throughout the process. Increasing energy efficiency in refinery desalting processes Recovering desalting of crude oil from desalting desalying water serves two purposes.

Skip to main content. By removing the suspended solids, they are not carried into the burner and eventually flue gas, where they would cause problems with environmental compliance such as flue gas opacity norms. Mixing dilution water with the produced water lowers crue effective desalting of crude oil of C sw in Eq.

Desalting of Heavy Crude Oil by using Centrifugal Technology – OnePetro

Use this section to list papers in OnePetro that a reader desalting of crude oil wants to learn more should definitely read. Some databases, repositories and search engines that provide services based on metadata harvsted using the OAI metadata harvesting protocol are:. The wash water shall be injected as near as possible emulsifying device to avoid a first separation with crude oil.

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In desalting of crude oil case, the terms desalting and emulsion treating effectively have the same meaning, and the concepts and equipment can be used. From Wikipedia, the free encyclopedia. At low crudd levels, oil conductivity becomes a function of water content and pH, as well as of salt content. Typical Instrument datasheet- Motor Operated Valve.


High-speed desalting of crude oil are used successfully in the exploration, delivery and treatment of crude oils and oily water applications. Sheriff’s Encyclopedic Dictionary of Applied Geophysics, fourth edition.

Crude Oil Desalting Process

Because quantities of available dilution water usually are limited, the effluent water often is recycled to increase drop population. Embed this code snippet in the HTML of your website to show this chapter. Desalting of crude oil in to your desalting of crude oil Username. To minimize or eliminate corrosion problems, it is important to select the the right material for desalter heat exchangers based on the salt concentration, pH value and temperature.

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Desalter effluent water contains a high content of chloride salts. No matter the fouling tendency or corrosiveness of your desalter effluent, Xrude Laval heat exchangers secure maximum heat transfer efficiency and heat exchanger desalting of crude oil. Crude oil introduced to refinery processing contains many undesirable impurities, such as sand, inorganic saltsdrilling mud, polymer, corrosion byproduct, etc.

When a mixture from many crude oil desalting of crude oil is processed in refinerythe salt content can vary greatly.

In the refineries, the two stages desalting system is normally applied, that consists of 2 electrostatic Coalescers Desalter. Publishers Content Coverage Privacy. Desalting of crude oil efficiency, or collision frequency, crufe drops of dispersed brine and dilution water is proportional to the drop populations.

The aqueous layer is removed and filtered if it is cloudy or if entrained oil is present. Proper cooling of effluent ojl is also required for further treatment in waste water plants.

Obviously, to remove salt, the dilution water must have low enough salt content to achieve the required equilibrium concentration in the residual entrained water.

As the oil level drops desalting of crude oil the reservoir, the amount of water injected increases to fill the void. Precipitation of these materials can cause plugging of heat exchanger trains, tower trays, heater tubes, etc.

July 28th Published: Proceedings of an international conference Oceanology: If necessary, one the following methods may desalting of crude oil used to enhance separation:. Further clarifying the water requires additional retention time and different chemical treatment, both of which are more economically provided externally to the desalter vessel.

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Desalter – Wikipedia

A desalter or dehydrator can separate only dispersed water and has no effect on water that is soluble at operating conditions; however, a significant quantity of soluble water can precipitate when the output is sampled through a sample cooler and the sample is further cooled while awaiting analysis.

The design of the disk-stack centrifuge with the direct-drive concept ensures a minimalized foot print of the installation. Advertise with us Advertise directly with us. The separation process must be designed to receive a bench of variation of water and salt.

Less obvious but also desalting of crude oil is the need for dilution water to be of sufficient quality to avoid contributing to emulsification. Of the several available salt-analysis methods, extraction and analysis of soluble salts has proved desalting of crude oil be the most reliable, the one least subject to interference from other constituents.

By using this site, you agree to the Terms of Use and Privacy Policy. Fouling in desalter exchangers has a negative impact on energy recovery and, if the effluent is not properly cooled, it will enter the waste water treatment plant at a temperature that is too high for waste water processes and therefore may cause upsets.

You may also like. Effluent water from the second-stage desalter is much less saline than the dispersed brine, so that it can be used for dilution water for the first stage, as shown in Fig. Because of desalting of crude oil widespread occurrence desalting of crude oil chloride in nature and the very small quantity being measured in this method, take care to avoid contaminating the sample during handling.