Method for preparing silicon-containing polyether demulsifier

A technology of demulsifier and silicon polyether, which is applied in the field of preparation of silicon-containing polyether demulsifier, can solve the problems of water solubility reduction, dehydration effect and broad-spectrum adaptability, etc., and achieve low production cost and good dehydration effect , The effect of low demulsification temperature

Inactive Publication Date: 2016-10-26
JURONG NINGWU CHEM
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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 the dehydration effect and broad-spectrum adaptability still cannot meet the requirements of oil field production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A silicon-containing polyether demulsifier and a preparation method thereof, the preparation method is as follows:

[0017] 1) Add 1.5 grams of γ-methacryloxypropyltrimethoxysilane, 7.5 grams of methanol and 1 gram of deionized water into a reactor with a stirring device, adjust the pH to 3~5, and alcoholyze 2~ 4 hours at 60~80 o Stirring and reacting for 1 to 3 hours at a temperature of C to obtain 10 grams of Si-OH-containing oligosiloxane product A.

[0018] 2) Add 60 grams of polyether demulsifier (AE1910, product of Jurong Ningwu High-tech Development Co., Ltd.), 1 gram of sodium hydroxide and 4 grams of calcium oxide into the reactor with stirring, dropping device and condenser tube, Control temperature 60~130 o C, add 10 grams of product A dropwise, after the dropwise addition, continue to stir and react for 3 to 6 hours, then add 25 grams of toluene to dissolve the crude product, stir for 1 to 3 hours and leave it to stand, filter off the solid matter, and the...

Embodiment 2

[0020] A silicon-containing polyether demulsifier and a preparation method thereof, the preparation method is as follows:

[0021] 1) Add 2 grams of γ-methacryloxypropyltrimethoxysilane, 7 grams of methanol and 1 gram of deionized water into a reactor with a stirring device, adjust the pH to 3~5, and alcoholyze 2~ 4 hours at 60~80 o Stirring and reacting for 1 to 3 hours at a temperature of C to obtain 10 grams of Si-OH-containing oligosiloxane product A.

[0022] 2) Add 65 grams of polyether demulsifier (TA1031, product of Jurong Ningwu High-tech Development Co., Ltd.), 1.2 grams of sodium hydroxide and 3.8 grams of calcium oxide into the reactor with stirring, dropping device and condenser tube, Control temperature 60~130 o C, dropwise add 10 grams of product A, after the dropwise addition, continue to stir and react for 3 to 6 hours, then add 20 grams of toluene to dissolve the crude product, stir for 1 to 3 hours and let stand, filter off the solid matter, and then disti...

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PUM

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Abstract

The invention discloses a method for preparing a silicon-containing demulsifier. The method comprises the steps of adopting a fractional step method to first perform alcoholysis on gamma-trimethoxysilyl propyl methacrylate, alcohol and deionized water for 2-4 h at the pH of 3-5, performing stirring reaction for 1-3 h at a temperature of 60-80 DEG C, and obtaining an oligosiloxane product A containin Si-OH; adding a polyether demulsifier, a basic catalyst and calcium oxide into a reactor with a stirring and dropwise adding device and a condensing pipe, controlling the temperature to be 60-130 DEG C, adding the product A dropwise, continuing to performing stirring reaction for 3-6 h after the dropwise adding and then adding a solvent dissolution crude product, performing stirring for 1-3 h and then standing, filtering out solid matter, and performing reduced pressure distillation to remove a solvent to obtain the silicon-containing demulsifier. The obtained demulsifier has the advantages of being good in dehydration effect, small in usage amount and low in demulsification temperature.

Description

technical field [0001] The invention relates to a preparation method of a polyether demulsifier, in particular to a preparation method of a silicon-containing polyether demulsifier suitable for demulsification and dehydration of crude oil emulsion. 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, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G33/04
CPCC10G33/04C10G2300/1033
Inventor 应珏翟洪金李怀阁陈杰王飞于文超任翠环夏文华李培
Owner JURONG NINGWU CHEM
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