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A kind of degreasing agent for three-element compound flooding produced water treatment and preparation method thereof

A technology of effluent treatment and ternary compounding, applied in the preparation of organic compounds, water/sewage treatment, preparation of amino compounds, etc., can solve the problems of inappropriate degreasing treatment of polymer-containing sewage, poor demulsification effect, etc. And transportation and preservation, high oil removal efficiency, good salt resistance

Active Publication Date: 2018-07-20
JURONG NINGWU CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Patent ZL201410455664.7 "A degreasing agent for oilfield binary compound flooding produced sewage" uses acryloyloxyethyl dimethylamine, chloroalkane, acrylamide, N,N'-methylenebis Acrylamide, ammonium persulfate and sodium sulfite reacted. The degreasing agent has the characteristics of less dosage, low cost, high degreasing rate, high degreasing efficiency, simple preparation and low cost. However, the degreasing agent belongs to Reverse demulsifier, the demulsification effect on oil-in-water emulsion is poor, and at the same time, the degreasing agent is not suitable for degreasing treatment of sewage containing poly

Method used

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  • A kind of degreasing agent for three-element compound flooding produced water treatment and preparation method thereof
  • A kind of degreasing agent for three-element compound flooding produced water treatment and preparation method thereof
  • A kind of degreasing agent for three-element compound flooding produced water treatment and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: Degreaser J 1 and its preparation method

[0032] (1) Degreaser J 1 The composition, components and molecular formula are as follows:

[0033] Degreaser J 1 The intermediate is formed by reacting p-phenylenediamine with formaldehyde and formic acid, and then reacted with sodium chlorododecanoate to form zwitterionic degreaser. Wherein, the molar ratio of p-phenylenediamine, formaldehyde, formic acid and sodium chlorododecanoate is 1:3:3:1. Degreaser J 1 The molecular formula is as follows:

[0034]

[0035] (2) Degreaser J 1 The preparation method is as follows:

[0036] ①Put 1mol of p-phenylenediamine and 1081.4g of isopropanol into a three-necked flask, install a reflux condenser with a water separator, stir at 200rpm, heat up to 30°C, pour 3mol of formic acid into a constant pressure In the dropping funnel, control the titration speed, and finish the dropping within 40 minutes. After the formic acid is dropped, adjust the stirring rate to 500...

Embodiment 2

[0040] Embodiment 2: Degreaser J 2 and its preparation method

[0041] (1) Degreaser J 2 The composition, components and molecular formula are as follows:

[0042] Degreaser J 2The intermediate is formed by reacting p-phenylenediamine with formaldehyde and formic acid, and then reacted with sodium chlorododecanoate to form zwitterionic degreaser. Wherein, the molar ratio of p-phenylenediamine, formaldehyde, formic acid and sodium chlorododecanoate is 1:4:4.5:1.25. Degreaser J 1 The molecular formula is as follows:

[0043]

[0044] (2) Degreaser J 2 The preparation method is as follows:

[0045] ①Put 1mol of p-phenylenediamine and 1522.3g of propanol into a three-necked flask, install a reflux condenser with a water separator, stir at 230rpm, heat up to 32°C, pour 4.5mol of formic acid into a constant pressure In the dropping funnel, control the titration speed, and finish dropping within 45 minutes. After the formic acid is dropped, adjust the stirring rate to 550 ...

Embodiment 3

[0049] Embodiment 3: Degreaser J 3 and its preparation method

[0050] (1) Degreaser J 3 The composition, components and molecular formula are as follows:

[0051] Degreaser J 3 The intermediate is formed by reacting p-phenylenediamine with formaldehyde and formic acid, and then reacted with sodium chlorododecanoate to form zwitterionic degreaser. Wherein, the molar ratio of p-phenylenediamine, formaldehyde, formic acid and sodium chlorododecanoate is 1:6:7:3.75. Degreaser J 1 The molecular formula is as follows:

[0052]

[0053] (2) Degreaser J 3 The preparation method is as follows:

[0054] ①Put 1mol of p-phenylenediamine and 2012.5g of isobutanol into a three-necked flask, install a reflux condenser with a water separator, stir at 260rpm, heat up to 36°C, pour 7mol of formic acid into a constant pressure In the dropping funnel, control the titration speed, and finish dropping within 55 minutes. After the formic acid is dropped, adjust the stirring rate to 520 r...

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Abstract

The invention belongs to the technical field of oil field sewage treatment, and in particular relates to an oil remover for produced water treatment of ASP flooding. The oil remover is the amphoteric ionic type oil remover formed by first reacting p-phenylenediamine with formaldehyde and formic acid to generate an intermediate and then reacting the intermediate with the sodium chloro-dodecanoic acid. The mol ratio of the p-phenylenediamine, the formaldehyde, the formic acid to the sodium chloro-dodecanoic acid is 1: 3-8: 3-8:1-5.5, preferably 1: 4: 4.5: 1.25. The oil remover disclosed by the invention is simple in preparation, strong in adaptability and low in cost, and the oil removal rate reaches up to 97% and above; the recycled oil produced by separation cannot influence the subsequent crude oil dehydration; therefore, the oil remover can be extensively applied to the oil removal process of the ASP flooding produced water.

Description

technical field [0001] The invention relates to a degreasing agent used for oilfield sewage treatment, in particular to a degreasing agent used for three-element compound flooding produced water treatment and a preparation method thereof. Background technique [0002] In recent years, my country has accelerated the promotion of tertiary oil recovery technology to maintain and increase crude oil production. Alkali-surfactant-polymer ASP flooding is a chemical flooding technology developed on the basis of surfactant flooding, alkaline water flooding and polymer flooding. Relevant studies have shown that ASP flooding can significantly increase recovery and has broad application prospects. [0003] However, due to the complex water quality of the wastewater produced by ASP flooding, which contains a large amount of residual alkali, surfactants and polymers (such as polyacrylamide PAM), the viscosity of the wastewater becomes larger, and the particle size of the sewage oil dropl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C227/08C07C229/18C02F1/54
CPCC02F1/547C07C209/00C07C227/08C07C229/18C07C211/51
Inventor 刘永涛李金隆李连生王飞高鹏飞韩磊陈文忠姜宁戴正康高亮亮韩彭洋冯楠
Owner JURONG NINGWU CHEM
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