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Methods and systems for processing crude oil

a crude oil and processing method technology, applied in the field of methods and systems for processing crude oil, can solve the problems of fouling and corrosion of the refinery system, achieve the effects of reducing or eliminating fouling and/or corrosion, increasing the reliability, efficiency and capacity of oil refinery processes

Inactive Publication Date: 2014-10-30
PALL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention offers methods and systems for reducing fouling and corrosion in oil refinery systems by removing solids that would otherwise damage the components of the refinery system. Additionally, the invention allows for the efficient processing of the rag layer, recovering much of the oil that would be lost if the layer were not processed. These methods and systems increase the reliability, efficiency, and capacity of oil refinery processes.

Problems solved by technology

The solids may include small solid particles of metal or grit or other substances as well as colloidal particles, and the rag layer may cause fouling and corrosion of the refinery system.

Method used

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  • Methods and systems for processing crude oil
  • Methods and systems for processing crude oil
  • Methods and systems for processing crude oil

Examples

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Embodiment Construction

[0009]Systems and methods for processing crude oil in accordance with the invention may be configured in a wide variety of ways. One of many different examples of a system 10 for processing crude oil within a refinery system is shown in FIG. 1. Generally, the system 10 may comprise a desalter 11, a mixer 13, and a dead-end filter assembly 14. In the illustrated embodiment, the system 10 may also comprise a separator 12 fluidly coupled between the desalter 11 and the mixer 13. The desalter 11 removes metals and / or salts and other dissolvables from crude oil by combining crude oil and water to produce oil or hydrocarbon, brine, and a rag layer. The rag layer may be located on top of the brine, e.g., at the interface between the brine and the hydrocarbon, and / or entrained as droplets or masses within the brine. The rag layer comprises an emulsion of at least hydrocarbon, brine, and solids and may also include other substances such as asphaltenes. Some or all of the rag layer emulsion a...

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PUM

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Abstract

Methods and systems for processing crude oil may include adding water to crude oil, for example, in a desalter, to produce hydrocarbon and brine and a rag layer emulsion, which may include hydrocarbon and brine and solids. The emulsion may be modified, including adding one or more of additional hydrocarbon and, a demulsifier, a reverse demulsifier, a coagulant, and a flocculant, for example, in a mixer. The modified emulsion may be directed through a dead-end filter assembly to remove solids.

Description

DISCLOSURE OF THE INVENTION[0001]During some crude oil refinery processes, an emulsion also known as a “rag layer” or “slop” may form. This rag layer may include an emulsion comprising any one or more of several substances, including, for example, oil or hydrocarbons, brine, asphaltenes, and / or solids. The solids may include small solid particles of metal or grit or other substances as well as colloidal particles, and the rag layer may cause fouling and corrosion of the refinery system. Accordingly, there is a need for improved methods and systems for processing crude oil.[0002]In accordance with one aspect of the invention, methods for processing crude oil may comprise adding water to crude oil to produce hydrocarbon and brine and a rag layer emulsion. The methods may further comprise modifying the rag layer emulsion, including adding one or more of additional hydrocarbon, a demulsifier, a reverse demulsifier, a coagulant, and a flocculant to the emulsion, and directing the modifie...

Claims

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Application Information

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IPC IPC(8): C10G31/09
CPCC10G31/09B01D17/045C10G31/08C10G32/02C10G33/04C10G33/06C10G2300/1033B03C1/286B03C2201/18C02F1/682C02F2101/325C10G33/00
Inventor METCALFE, ALLAN DAVIDLEVESQUE, FRANCOISLAKHANI, HANIF M
Owner PALL CORP