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Method for preparing novel phenolic amine resin demulsifier

A technology of phenalkamine resin and demulsifier, which is applied in the field of preparation of new phenalkamine resin demulsifier, can solve the problems of low molecular weight, unseen, few polyether branches, etc., and achieves low oil content and fast oil-water separation speed. Effect

Active Publication Date: 2015-06-03
SHENGLI OILFIELD SHENGLI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the less active groups of alkylphenols, the synthesized polyether has less branched chains and relatively low molecular weight, which destroys its demulsibility.
[0005] At present, there is no relevant report on obtaining phenalkamine resin demulsifiers by participating in the polymerization reaction of phenalkamine resin with propylene oxide and ethylene oxide.

Method used

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  • Method for preparing novel phenolic amine resin demulsifier
  • Method for preparing novel phenolic amine resin demulsifier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The first step is to synthesize phenalkamine resin

[0027] Put phenol and monoethanolamine into the reactor according to the claimed molar ratio 1:3, phenol is 188kg, monoethanolamine is 369.7kg, raise the temperature to 40℃~60℃, slowly add 486.5kg of formaldehyde solution (formaldehyde content is 37%) ), the temperature is controlled during the dripping process, and the temperature is kept at 50~60℃ to prevent local overheating due to violent reaction. After the addition, the temperature is raised to 90°C for aging for 1 hour, and the temperature is raised to 100°C to 160°C for vacuum dehydration. After the anhydrous is evaporated, the reaction is completed, cooled and discharged for later use.

[0028] The second step: phenolic amine resin polymerization of propylene oxide

[0029] Add the above 300kg phenalkamine resin and 6kg KOH catalyst into the polyether reactor, turn on the stirring, heat the material to 100℃~110℃, vacuum dehydration (about 20min), and close the vacu...

Embodiment 2

[0034] The first step is to synthesize phenalkamine resin

[0035] Put phenol and diethanolamine into the reactor according to the claimed molar ratio 1:3, phenol is 188kg, diethanolamine is 636.7kg, raise the temperature to 40℃~60℃, slowly drop 486.5kg of formaldehyde solution (formaldehyde content is 37% ), the temperature is controlled during the dripping process, and the temperature is kept at 50~60℃ to prevent local overheating due to violent reaction. After the addition, the temperature is raised to 90°C for aging for 1 hour, and the temperature is raised to 100°C to 160°C for vacuum dehydration. After the anhydrous is evaporated, the reaction is completed, cooled and discharged for use.

[0036] The second step: phenolic amine resin polymerization of propylene oxide

[0037] Add the above 250kg phenalkamine resin and 5.5kg KOH catalyst into the polyether reactor, turn on the stirring, heat the material to 100℃~110℃, vacuum dehydration (about 20min), close the vacuum valve whe...

Embodiment 3

[0042] The first step is to synthesize phenalkamine resin

[0043] Put phenol and triethanolamine into the reactor according to the claimed molar ratio of 1:3, phenol is 94kg, triethanolamine is 525.9kg, raise the temperature to 40℃~60℃, slowly drip 243kg formaldehyde solution (formaldehyde content is 37%) , The temperature is controlled during the dripping process, and the temperature is kept at 50~60℃ to prevent local overheating due to violent reaction. After the addition, the temperature is raised to 90°C for aging for 1 hour, and the temperature is raised to 100°C to 160°C for vacuum dehydration. After the anhydrous is evaporated, the reaction is completed, cooled and discharged for use.

[0044] The second step: phenolic amine resin polymerization of propylene oxide

[0045] Add the above 300kg phenalkamine resin and 6kg KOH catalyst into the polyether reactor, turn on the stirring, heat the material to 100℃~110℃, vacuum dehydration (about 20minh), and close the vacuum valve w...

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Abstract

The invention provides a method for preparing a novel phenolic amine resin demulsifier. The method comprises the following steps: (1), firstly carrying out a polymerization reaction on phenolic amine resin and epoxy propane to obtain an intermediate polymer; (2), then, carrying out a polymerization reaction on the intermediate polymer and epoxy ethane to obtain a target macromolecular polymeric product, wherein in the two polymerization reactions, the reaction pressure needs to be controlled to be not greater than 0.4 MPa, the reaction temperature is kept within 130-140 DEG C, and the polymerization reactions are terminated when the reaction pressure does not decrease; and (3), finally, mixing and diluting the target macromolecular polymeric product with a solvent to obtain the phenolic amine resin demulsifier. The novel phenolic amine resin demulsifier prepared by the method provided by the invention is a difunctional preparation which has high pro-charge capability so as to balance negative charges formed by the demulsifier; moreover, the novel phenolic amine resin demulsifier contains a strong surfactant to break the interfacial energy of emulsion, and has the characteristics of high oil-water separation speed and low oil content in water.

Description

Technical field [0001] The invention belongs to the technical field of petrochemical additives for oilfield development, and particularly relates to a method for preparing a novel phenolic amine resin demulsifier. Background technique [0002] Currently, the world produces approximately 8.6 million tons of crude oil every day, and at least the same amount of water is produced. In the development process of various oil fields, oil wells generally go through three production stages: no water cut period, water cut period and high water cut period. After the oil well breaks through the water, the produced crude oil emulsifies, and the viscosity and freezing point increase, causing wax formation. In severe cases, oil well accidents may even lead to production shutdown, which reduces crude oil output and greatly increases production costs. In addition, because crude oil contains a large amount of water, as well as natural surfactants such as resins, gums, asphaltenes and organic acids...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G33/04C08G65/28
Inventor 崔黎黎周建成熊国辉慕生一岳振涛王颖丁大伟
Owner SHENGLI OILFIELD SHENGLI CHEM
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