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Crude oil emulsion splitter

A crude oil demulsifier and demulsifier technology, applied in the direction of chemical dehydration/demulsification, etc., can solve the problems of crude oil gathering and transportation, storage tanks, increased power consumption and fuel consumption, rising water content, and scaling of pipelines and equipment. , to achieve the effect of good interfacial activity and permeability, good demulsification performance

Inactive Publication Date: 2009-11-04
INST OF CHEM CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The increase of water content in the produced crude oil will not only lead to a great increase in crude oil gathering and transportation, storage tanks, power consumption and fuel consumption, but also impurities such as salt in crude oil will cause scaling, blockage and corrosion of pipelines and equipment. It may also cause catalyst poisoning in petroleum refining

Method used

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  • Crude oil emulsion splitter
  • Crude oil emulsion splitter
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Examples

Experimental program
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Effect test

Embodiment 1

[0020] With 80g (40 parts) the compound (i.e. amino nonionic Gemini polyether) shown in formula III structural formula, 20g (10 parts) the compound (i.e. alkyl aryl sulfonic acid) shown in formula IV and 100g (50 parts ) ethanol mixed to obtain demulsifier A.

[0021]

[0022] (Formula III) (Formula IV)

Embodiment 2

[0024] The compound shown in 70g (35 parts) formula III structural formula (namely amino nonionic Gemini polyether), 30g (15 parts) the compound shown in formula IV (namely alkyl aryl sulfonic acid) and 100g (50 parts ) ethanol mixed to obtain demulsifier B.

Embodiment 3

[0026] The compound shown in 60g (30 parts) formula III structural formula (being amino-based nonionic Gemini polyether), 40g (20 parts) the compound shown in formula IV (being alkyl aryl sulfonic acid) and 100g ethanol are mixed, Demulsifier C is obtained.

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Abstract

The invention discloses a crude oil emulsion splitter. The crude oil emulsion splitter comprises compound shown in structure general formula I, compound and solvent shown in structure general formula II; in the structure general formula I, R1 is alkyl with 8-24 carbon atoms in main chain, R2 is alkyl with 2-6 carbon atoms in the main chain or phenyl; PO is methylethoxy group unit producted by ring opening of propylene oxide, EO is oxyethyl group unit produced by ring opening of epoxy ethane, m is equal to 20-80, n is equal to 10-40; and in structure general formula II, R3 is alkyl with 9-22 carbon atoms in the main chain, and Ar is aryl. The crude oil emulsion splitter provided by the invention has good interfacial activity and penetrability, can quickly reach oil-water boundary, can substitute natural interface active material and form unsteady oil-water interfacial film, has good emulsion splitting performance on the crude oil emulsion, and can be applied to the conventional crude oil mining and dehydration field.

Description

technical field [0001] The invention relates to a crude oil demulsifier. Background technique [0002] With the continuous exploitation of crude oil, the oil field gradually enters a period of high water cut. The increase of water content in the produced crude oil will not only lead to a great increase in crude oil gathering and transportation, storage tanks, power consumption and fuel consumption, but also impurities such as salt in crude oil will cause scaling, blockage and corrosion of pipelines and equipment. Catalyst poisoning may also occur in petroleum refining. [0003] Chemical demulsification dehydration is to dehydrate crude oil by adding surfactants to crude oil. At present, block copolymers or random copolymers of polyoxyethylene ether and polyoxypropylene ether are mostly used. Because demulsifiers usually have strong surface activity and good hydrophilic and lipophilic properties, the demulsifier molecules added to the crude oil emulsion can quickly diffuse ...

Claims

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Application Information

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IPC IPC(8): C10G33/04C08L71/00
Inventor 史学峰王金本周继柱张巍孙晋红张健向问陶檀国荣
Owner INST OF CHEM CHINESE ACAD OF SCI
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