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Crude oil desalting agent and preparation method thereof

A technology of desalting agent and crude oil, which is applied in the formulation and preparation of desalting agent, can solve the problems of large amount of demulsifier, excessive salt content of crude oil, poor effect, etc., and achieve good demulsification and desalination effect

Active Publication Date: 2010-06-09
CHINA PETROCHEMICAL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the disadvantages of conventional demulsifiers in the prior art, such as poor demulsification and desalination effect, excessive salt content of crude oil after electric desalting, large amount of demulsifier, etc., and provides a demulsifier suitable for heavy crude oil, especially high colloidal, Demulsifying and desalting agent for heavy oil with high asphaltene content and preparation method thereof

Method used

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  • Crude oil desalting agent and preparation method thereof
  • Crude oil desalting agent and preparation method thereof
  • Crude oil desalting agent and preparation method thereof

Examples

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Effect test

Embodiment 1

[0033] Add 10g of tetraethylenepentamine and 5g of potassium hydroxide into the autoclave, protect it with nitrogen, and slowly press in 400g of propylene oxide with nitrogen at a temperature of 120°C. During the reaction, it needs to be cooled by cooling water, react for 2.5 hours, and then Slowly press in 500g of ethylene oxide with nitrogen, react at 150°C for 3 hours, finally press in 400g of propylene oxide slowly with nitrogen, react at 120°C for 3 hours, and obtain polyethylene polyamine polyoxypropylene polyoxygen after cooling Vinyl Ether I.

Embodiment 2

[0035] Add 10g of triethylenetetramine and 5g of potassium hydroxide into the autoclave, protect it with nitrogen, and slowly press in 300g of propylene oxide with nitrogen at a temperature of 120°C. During the reaction, it needs to be cooled by cooling water, react for 3 hours, and then Slowly press in 400g of ethylene oxide with nitrogen, react at 150°C for 3 hours, finally press in 300g of propylene oxide slowly with nitrogen, react at 120°C for 3 hours, and obtain polyethylene polyamine polyoxypropylene polyoxygen after cooling Vinyl ether II.

Embodiment 3

[0037] Add 10g of diethylenetriamine and 5g of sodium hydroxide into the autoclave, protect it with nitrogen, and slowly press in 300g of propylene oxide with nitrogen at a temperature of 120°C. During the reaction, it needs to be cooled by cooling water, react for 3 hours, and then Slowly press in 500g of ethylene oxide with nitrogen, react at 150°C for 4 hours, finally press in 400g of propylene oxide slowly with nitrogen, react at 120°C for 5 hours, and obtain polyethylene polyamine polyoxypropylene polyoxygen after cooling Vinyl ether III.

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Abstract

The invention relates to a crude oil desalting agent and a preparation method thereof, which are mainly used for solving the shortcomings of poor demulsification and desalination effects, over-standard salt content in crude oil after electric desalination, large using quantity of demulsifier and the like of the conventional demulsifier. The demulsifier comprises (a) 10% by weight-60% by weight of polyoxyethylene polyoxypropylene polyethylene polyamine, (b) 1% by weight-20% by weight of asphaltene dispersant, (c) 1% by weight-20% by weight of surfactant, (d) 1% by weight-20% by weight of inorganic salt additive and (e) 10% by weight-60% by weight of solvent. The use of the desalting agent can better solve the problems, and the desalting agent has good demulsification, desalination and dehydration performances, thereby being particularly applicable to demulsification, desalination and dehydration of heavy oil with high gluey content and high asphaltene content.

Description

technical field [0001] The invention relates to a crude oil desalting agent and a preparation method thereof, in particular to a formula of a desalting agent suitable for the electric desalting process of crude oil in an oil refinery and a preparation method thereof. Background technique [0002] Crude oil electric desalting is the first process of crude oil processing, and its purpose is to remove salt, water and other impurities from crude oil. The demulsifier plays a key role in the oil-water demulsification process of electrical desalination. It destroys the emulsified film surrounding the water droplet and prevents the formation of the external emulsified film of the water droplet. At present, general conventional demulsifiers have the problem of specificity for crude oil. When the properties of crude oil change, especially for heavy oil with high colloid and asphaltene content, the demulsification and desalination effect of conventional demulsifiers is poor, resulting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G33/04C10G33/02
Inventor 于凤昌段永锋彭松梓崔新安李春贤王红梅申明周
Owner CHINA PETROCHEMICAL CORP
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