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Method for preparing SD-3 demulsifier

A demulsifier, SD-2 technology, applied in the field of preparation of SD-3 demulsifier, can solve the problems of inability to adapt to demulsifier dehydration treatment, environmental pollution, poor biodegradability of demulsifier, etc., and reduce the cost of demulsification and dehydration. , the effect of reducing environmental pollution and saving heating energy

Active Publication Date: 2015-06-17
BINZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some demulsifiers have poor biodegradability and are likely to cause environmental pollution, such as alkylphenol polyoxyethylene ether demulsifiers, which have been banned in some countries
[0005] With the late stage of oilfield development and the wide application of enhanced oil recovery technology, the water content of crude oil is gradually increasing. The addition of various oil displacement agents makes the stability of crude oil emulsion better and better. The existing demulsifiers are far from suitable for demulsification and dehydration. It is imperative to develop a new type of demulsifier

Method used

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  • Method for preparing SD-3 demulsifier
  • Method for preparing SD-3 demulsifier
  • Method for preparing SD-3 demulsifier

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Will C 4-9 Organic phenol and diethylenetriamine are mixed in a molar ratio of 1:2, heated and controlled at 30°C, stirred for 30 minutes, and the molar ratio is C 4-9 Organic phenol: formaldehyde is added dropwise with formaldehyde in the ratio of 1:2. After the dropwise addition, the temperature is raised to 150-170°C, and the temperature is controlled to react for 3 hours. The product is a new type of thermoplastic resin initiator.

[0022] Add the catalyst sodium hydroxide to the thermoplastic resin, stir while heating, heat to 90°C, turn on the vacuum pump for 30 minutes, control the temperature at 115-135°C, add propylene oxide and ethylene oxide continuously respectively, and the feeding is completed Finally, react at a temperature of 115-135°C and a pressure of 0.1-0.3Mpa for 30 minutes, lower the temperature to 90°C, and turn on the vacuum pump for 30 minutes to obtain polyether.

[0023] The amount added is 1:50:25 according to the weight ratio of thermoplast...

Embodiment 2

[0027] Will C 4-9 Organic phenol and triethylenetetramine are mixed in a molar ratio of 1:3, heated and controlled at 30-40°C, stirred for 30 minutes, and the molar ratio is C 4-9 Formaldehyde is added dropwise at a ratio of 1:3 of organic phenol: formaldehyde. After the dropwise addition, the temperature is raised to 150-170°C, and the temperature is controlled to react for 3 hours. The product is a new type of thermoplastic resin initiator.

[0028] Add the catalyst potassium hydroxide to the thermoplastic resin, stir while heating, heat to 90°C, turn on the vacuum pump for vacuum treatment for 30 minutes, control the temperature at 115-135°C, add propylene oxide and ethylene oxide continuously respectively, and the feeding is completed Finally, react at a temperature of 115-135°C and a pressure of 0.1-0.3Mpa for 30 minutes, lower the temperature to 90°C, and turn on the vacuum pump for 30 minutes to obtain polyether.

[0029] The amount added is 1:100:100 according to the ...

Embodiment 3

[0033] Will C 4-9 Organic phenol and tetraethylenepentamine are mixed in a molar ratio of 1:4, heated and controlled at 30-40°C, stirred for 30 minutes, and the molar ratio is C 4-9 Organic phenol: formaldehyde is added dropwise with formaldehyde in the ratio of 1:4. After the dropwise addition, the temperature is raised to 150-170°C, and the temperature is controlled for 3 hours to react. The product is a new type of thermoplastic resin initiator.

[0034] Add the catalyst boron trifluoride to the thermoplastic resin, stir while heating, heat to 90°C, turn on the vacuum pump for vacuum treatment for 30 minutes, control the temperature at 115-135°C, add propylene oxide and ethylene oxide continuously, and feed After completion, react at a temperature of 115-135°C and a pressure of 0.1-0.3Mpa for 30 minutes, lower the temperature to 90°C, and turn on the vacuum pump for 30 minutes to obtain polyether.

[0035] The amount added is 1:200:200 according to the weight ratio of ther...

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Abstract

The invention relates to a method for preparing an SD-3 demulsifier. The demulsifier is compounded of an SD-2 demulsifier and a regulator, wherein the content of the regulator is 30-60% the content of the SD-2 demulsifier, and the SD-2 demulsifier is obtained through taking novel thermoplastic resin, which is synthesized from organic phenols, organic amines and formaldehyde, as an initiator, carrying out block polymerization on epoxy ethane-epoxy propane chain segments so as to obtain polyether and adding a chain linker into the polyether so as to carry out chain extending. According to the method, the demulsifier is high in demulsification speed and high in dehydration rate and has a good usage effect at low temperature, so that a large amount of heating energy sources for oilfields are saved, the usage amount is small, the demulsification and dehydration costs for crude oil are reduced, the environmental pollution is reduced, and therefore, the method has important practical significance in the production, gathering and transportation of the crude oil.

Description

technical field [0001] The invention relates to the technical field of crude oil demulsifiers, in particular to a preparation method of SD-3 demulsifiers. Background technique [0002] During crude oil gathering, transportation and refining, crude oil containing water and impurities will not only increase the load on pumps, pipelines and storage tanks, but also cause corrosion and fouling of pipeline systems, pumps and production equipment, and even lead to breakdown in crude oil processing. A series of problems such as catalyst poisoning; on the other hand, oil in water discharged from oil fields and refineries will cause environmental pollution and waste of oil. [0003] In recent years, with the continuous development of oilfields, the oilfields are gradually aging, and the water content in the produced crude oil is getting higher and higher, and some crude oils are even becoming heavier. In order to improve oil recovery, each oil area adopts different enhanced oil recov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/28
Inventor 杨仲年杨仲良马艳梁晖罗丛高在海
Owner BINZHOU UNIV
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