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Epoxy resin chain extension type polyether demulsifying agent and preparation method thereof

A technology of polyether demulsifier and epoxy resin, which is applied in the direction of dehydration/demulsification by chemical methods, can solve the problems of insufficient broad-spectrum adaptability and reduced water solubility, and achieve low production cost, fast dehydration rate, The effect of simple synthesis process

Inactive Publication Date: 2013-12-04
JIANGSU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the demulsification effect of this kind of demulsifier has been improved to a certain extent, its water solubility has decreased, and its broad-spectrum adaptability still cannot meet the requirements of oilfield production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] An epoxy resin chain extension type polyether demulsifier, the preparation method is as follows:

[0016] Add 100 grams of industrial polyether (AE31, product of Jurong Ningwu High-tech Development Co., Ltd.) and 0.2 gram of potassium hydroxide in a 250ml flask equipped with a stirrer, condenser, and constant pressure dropping funnel, and then use constant pressure drop Slowly add 21 grams of epoxy resin E51 toluene solution (1 gram of epoxy resin is dissolved in 20 grams of toluene) dropwise into the liquid funnel, and stir at 100 o C reacted for 3 hours, then added 0.1 g of triethanolamine, stirred and reacted for 2 hours, and finally evaporated under reduced pressure to remove the solvent to obtain an epoxy resin chain-extended polyether demulsifier.

Embodiment 2

[0018] An epoxy resin chain extension type polyether demulsifier, the preparation method is as follows:

[0019] Add 100 grams of industrial polyether (AE31, product of Jurong Ningwu High-tech Development Co., Ltd.) and 0.2 gram of potassium hydroxide in a 250ml flask equipped with a stirrer, condenser, and constant pressure dropping funnel, and then use constant pressure drop Liquid funnel slowly drips 22 gram epoxy resin E51 toluene solutions (2 gram epoxy resins are dissolved in 20 gram toluene), under stirring state 110 o C reacted for 2 hours, then added 0.2 g of triethanolamine, stirred and reacted for 2 hours, and finally evaporated under reduced pressure to remove the solvent to obtain an epoxy resin chain-extended polyether demulsifier.

Embodiment 3

[0021] An epoxy resin chain extension type polyether demulsifier, the preparation method is as follows:

[0022] Add 100 grams of industrial polyether (F3111, product of Jurong Ningwu High-tech Development Co., Ltd.) and 0.5 gram of potassium hydroxide into a 250ml flask equipped with a stirrer, a condenser, and a constant pressure dropping funnel, and then use a constant pressure drop Slowly add 21 grams of epoxy resin E51 toluene solution (1 gram of epoxy resin is dissolved in 20 grams of toluene) dropwise into the liquid funnel, and stir at 120 o C reacted for 2 hours, then added 0.2 g of triethanolamine, stirred and reacted for 2 hours, and finally evaporated under reduced pressure to remove the solvent to obtain an epoxy resin chain-extended polyether demulsifier.

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Abstract

The invention discloses an epoxy resin chain extension type polyether demulsifying agent and a preparation method of the epoxy resin chain extension type polyether demulsifying agent. Raw materials for preparation of the demulsifying agent comprise 50wt% to 90wt% of industrial polyether, 0.1wt% to 7wt% of epoxy resin, basic catalysts with the dosage being 0.01wt% to 3wt% of industrial polyether, 0.01wt% to 2wt% of triethanolamine, and good solvents of industrial polyether and epoxy resin. The synthetic method includes the steps of enabling one or more types of epoxy resin mixtures to react with one or more types of industrial polyether mixtures under the temperature ranging from 80 DEG C to 130 DEG C, adding a defined amount of triethanolamine, stirring the mixture and enabling the mixture to react for 2 hours, and obtaining the epoxy resin chain extension type polyether demulsifying agent by conducting reduced pressure distillation to remove the solvent. The epoxy resin chain extension type polyether demulsifying agent is simple in synthetic process, small in usage amount and low in demulsifying temperature.

Description

technical field [0001] The invention relates to demulsification and dehydration of crude oil emulsion, in particular to an epoxy resin chain extension type polyether demulsifier and a preparation method thereof. Background technique [0002] With the continuous exploitation of crude oil and the continuous development and application of oil recovery technology, the crude oil emulsion has become more stable. Most of the crude oil produced in the oil field is exploited in the form of oil-water emulsion, and the water content of crude oil increases year by year, which aggravates the The task of demulsification and dehydration of emulsified crude oil is realized. The demulsifier single agent currently used in China is basically non-ionic polyoxyethylene polyoxypropylene ether demulsifier. The broad-spectrum adaptability of the oil is poor. Although a variety of polyether demulsifiers can improve the demulsification effect after compounding, the demulsifier described in the pate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G33/04C08G65/00
Inventor 倪良李怀阁应珏张文莉应军王蕾翟洪金郑磊倪小明陈杰
Owner JIANGSU UNIV
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