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Ageing oil demulsifier and preparation method thereof

An oil demulsifier and demulsifier technology, applied in the direction of dehydration/demulsification by chemical methods, can solve the problems of poor demulsification effect, long dehydration time, and few single-dose varieties, and achieve high dehydration efficiency, small toxic and side effects, Obvious effect

Active Publication Date: 2014-03-26
河南鼎源化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing demulsifiers have technical problems such as few types of single agent, large dosage, high cost, long dehydration time, poor demulsification effect, etc.

Method used

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  • Ageing oil demulsifier and preparation method thereof
  • Ageing oil demulsifier and preparation method thereof
  • Ageing oil demulsifier and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0019] An aging oil demulsifier, which is composed of mixed acid, demulsifier monomer and initiator, and its composition ratio is: the mixed acid is composed of acrylic acid and maleic anhydride, the molar ratio of acrylic acid and maleic anhydride is 1:1.5, mixed The molar ratio of the acid to the demulsifier monomer alkyl phenolic resin-polyoxypropylene polyoxyethylene ether is 0.5:1.5, and the initiator lauroyl peroxide is 8% of the mass of the mixed acid. Initiator is free radical polymerization initiator lauroyl peroxide, its structural formula is

[0020]

Embodiment 2

[0022] An aging oil demulsifier, which is composed of mixed acid, demulsifier monomer and initiator, and its composition ratio is: mixed acid is composed of acrylic acid and maleic anhydride, the molar ratio of acrylic acid and maleic anhydride is 3:0.5, mixed The molar ratio of the acid to the demulsifier monomer alkylphenolic resin-polyoxypropylene polyoxyethylene ether is 1.7:0.5, and the initiator lauroyl peroxide is 12% of the mass of the mixed acid. All the other are with embodiment 1.

Embodiment 3

[0024] A kind of preparation method of aged oil demulsifier, process comprises: acrylic acid and maleic anhydride are 1:1.5 by molar ratio to prepare mixed acid, mixed acid and demulsifier monomer alkyl phenolic resin-polyoxypropylene polyoxyethylene ether The molar ratio is 1.7:1.5, add lauroyl peroxide free radical polymerization initiator with 12% mixed acid mass, and polymerize at 100°C for 1h, then raise the temperature to 150°C for esterification reaction, esterification Reaction for 3 hours to obtain aging oil demulsifier.

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Abstract

The invention relates to an ageing oil demulsifier and a preparation method thereof, and belongs to the technical field of petroleum processing. The ageing oil demulsifier comprises mixed acid, a demulsifier monomer and an initiator, wherein the mixed acid consists of acrylic acid and maleic anhydride based on the molar ratio of (1-3): (0.5-1.5); the molar ratio of the mixed acid to the demulsifier monomer, namely, alkyl phenolic resin-polyoxyethylene polyoxypropylene ether, is (0.5-1.7): (0.5-1.5); the initiator, namely, lauroyl peroxide, accounts for 8 to 12% of the mass of the mixed acid. The preparation method comprises the following processes: adding the initiator, namely lauroyl peroxide to mixed acid and demulsifier monomer, namely alkyl phenolic resin-polyoxyethylene polyoxypropylene ether; polymerizing for 1 to 4 hours under a temperature of 70 to 100 DEG C; heating to reach 100 to 150 DEG C; esterifying for 3 to 7 hours to obtain the ageing oil demulsifier. The ageing oil demulsifier has the characteristics of being simple in components, simple in process, convenient, fast and efficient to prepare, low in cost, small in dosage, small in toxic and side effects, wide in application scope, good in demulsifying effect, etc.

Description

technical field [0001] The invention belongs to the technical field of petroleum processing, in particular to an aging oil demulsifier and a preparation method thereof. Background technique [0002] At present, the so-called "aging oil" in the petroleum processing industry refers to the crude oil emulsion produced due to the long residence time in the sedimentation separation equipment during the oil-water treatment process. Emulsified particles formed during drilling operations and tertiary oil recovery, emulsions formed during crude oil transportation, waste oil recovered from sewage treatment plants with various chemical agents, ground crude oil, and oily suspended matter produced under the action of bacteria are all Causes of aging oil formation. Due to the chemical reaction in the process of mining heavy oil, the mixing of mechanical impurities such as clay and solid particles with strong conductivity, and emulsifiers such as chemical agents for increasing production a...

Claims

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Application Information

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IPC IPC(8): C10G33/04C08G81/02C08F220/06C08F222/06
Inventor 靳文礼
Owner 河南鼎源化工科技有限公司
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