A kind of preparation method of phenalkamine 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, unobserved, damaged demulsifier performance, etc., and achieves low oil content and fast oil-water separation speed. Effect

Active Publication Date: 2017-03-01
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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  • A kind of preparation method of phenalkamine resin demulsifier
  • A kind of preparation method of phenalkamine 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 reaction kettle according to the molar ratio of 1:3 according to the claim, 188kg of phenol and 369.7kg of monoethanolamine, raise the temperature to 40℃~60℃, slowly add 486.5kg of formaldehyde solution (the formaldehyde content is 37% ), the temperature is controlled during the dropping process, and the temperature is kept at 50-60°C to prevent local overheating caused by violent reactions. After the dropwise addition, raise the temperature to 90°C for aging for 1 hour, then raise the temperature to 100°C to 160°C for vacuum dehydration, and wait until the anhydrous evaporates to complete the reaction, then cool down and discharge for later use.

[0028] The second step: phenalkamine resin polymerizes propylene oxide

[0029] Add the above-mentioned 300kg phenalkamine resin and 6kg KOH catalyst into the polyether reactor, start stirring, heat the material to 100°C-110°...

Embodiment 2

[0034] The first step is to synthesize phenalkamine resin

[0035] Put phenol and diethanolamine into the reaction kettle according to the molar ratio of 1:3 according to the claim, 188kg of phenol and 636.7kg of diethanolamine, raise the temperature to 40℃~60℃, slowly add 486.5kg of formaldehyde solution (formaldehyde content is 37% ), the temperature is controlled during the dropping process, and the temperature is kept at 50-60°C to prevent local overheating caused by violent reactions. After the dropwise addition, raise the temperature to 90°C for aging for 1 hour, then raise the temperature to 100°C to 160°C for vacuum dehydration, and wait until the anhydrous evaporates to complete the reaction, then cool down and discharge for later use.

[0036] The second step: phenalkamine resin polymerizes propylene oxide

[0037] Add the above-mentioned 250kg phenalkamine resin and 5.5kg KOH catalyst into the polyether reactor, start stirring, heat the material to 100°C-110°C, vac...

Embodiment 3

[0042] The first step is to synthesize phenalkamine resin

[0043] Put phenol and triethanolamine into the reaction kettle according to the molar ratio of 1:3 as claimed in the claim, 94kg of phenol and 525.9kg of triethanolamine, raise the temperature to 40℃~60℃, slowly add 243kg of formaldehyde solution (formaldehyde content is 37%) , The temperature is controlled during the dropping process, and the temperature is kept at 50-60°C to prevent local overheating caused by violent reactions. After the dropwise addition, raise the temperature to 90°C for aging for 1 hour, then raise the temperature to 100°C to 160°C for vacuum dehydration, and wait until the anhydrous evaporates to complete the reaction, then cool down and discharge for later use.

[0044] The second step: phenalkamine resin polymerizes propylene oxide

[0045] Add the above-mentioned 300kg phenalkamine resin and 6kg KOH catalyst into the polyether reactor, start stirring, heat the material to 100°C-110°C, vacuu...

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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 oil field development, and in particular relates to a preparation method of a novel phenalkamine resin demulsifier. Background technique [0002] At present, the world produces about 8.6 million tons of crude oil every day, and at least the same amount of water is produced. In the development process of each oil field, oil wells generally go through three production stages: water-free period, water-cut period and high water-cut period. After water breakthrough in the oil well, the produced crude oil will be emulsified, the viscosity and freezing point will rise, causing wax deposition, and in severe cases, oil well accidents will occur, and even stop production, resulting in a decline in crude oil production and a substantial increase in production costs. In addition, since crude oil contains a large amount of water and natural surfactants such as resins, colloids, asphaltene ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G33/04C08G65/28
Inventor 周建成熊国辉慕生一岳振涛王颖丁大伟张晓潇刘成龙
Owner SHENGLI OILFIELD SHENGLI CHEM
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