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A degreaser for oily sewage treatment in oil fields and preparation method thereof

A technology for degreasing agent and oily sewage, applied in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. Poor performance and other problems, to achieve the effect of high oil removal efficiency, simple synthesis process, and strong temperature resistance

Active Publication Date: 2019-03-05
克拉玛依中科恒信科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Degreasers are roughly divided into the following two categories. One type has various ingredients and good degreasing effect, but has the disadvantages of complicated preparation process, poor salt resistance and high cost; The process is relatively simple, and the requirements for water quality are relatively low, but it has the disadvantage of poor degreasing effect
[0004] Patent ZL201410254042.8 "a composite flocculation degreasing agent for oily sewage treatment" is made of aluminum sulfate, magnesium chloride, magnesium hydroxide, bentonite and polyacrylamide. High efficiency, simple preparation, low cost, etc., but the degreasing agent needs to use corrosive magnesium hydroxide, which has a strong corrosive effect on equipment

Method used

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  • A degreaser for oily sewage treatment in oil fields and preparation method thereof
  • A degreaser for oily sewage treatment in oil fields and preparation method thereof
  • A degreaser for oily sewage treatment in oil fields and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: Degreaser W 1 and its preparation method

[0029] (1) Degreaser W 1 The composition, components and molecular formula are as follows:

[0030] Degreaser W 1 Cationic degreasing agent is produced by reacting perfluorotriethylamine with 3,7-dioctyl-1-bromomethylnaphthalene in ethanol solution, and its molecular formula is as follows:

[0031]

[0032] The molar ratio of perfluorotriethylamine to 3,7-dioctyl-1-bromomethylnaphthalene is 1:1.0.

[0033] (2) Degreaser W 1 The preparation method is as follows:

[0034] ① Add 1 mol of perfluorotriethylamine to 7420g of ethanol, stir at 35°C, the stirring rate is 300rpm, and the stirring time is 20min, then slowly add 5.565g of catalyst potassium carbonate dropwise, react for 2h, cool down to room temperature, Obtain solution A;

[0035] ②Add 1.0mol of 3,7-dioctyl-1-bromomethylnaphthalene to solution A, slowly raise the temperature to 75°C, stir at 510rpm, react for 13h, then cool down to 40°C, react for ...

Embodiment 2

[0039] Embodiment 2: Degreaser W 2 and its preparation method

[0040] (1) Degreaser W 2 The composition, components and molecular formula are as follows:

[0041] Degreaser W 2 Cationic degreasing agent is produced by reacting perfluorotriethylamine with 3,7-dioctyl-1-bromomethylnaphthalene in ethanol solution, and its molecular formula is as follows:

[0042]

[0043] The molar ratio of perfluorotriethylamine to 3,7-dioctyl-1-bromomethylnaphthalene is 1:1.2.

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

[0045] ① Add 1 mol of perfluorotriethylamine to 6123g of ethanol, stir at 40°C, the stirring rate is 350rpm, and the stirring time is 30min, then slowly add 4.123g of catalyst potassium carbonate dropwise, react for 2.5h, then cool down to room temperature , to obtain solution A;

[0046] ② Add 1.2mol of 3,7-dioctyl-1-bromomethylnaphthalene to solution A, slowly raise the temperature to 90°C, stir at 530rpm, react for 15h, then cool down to 50°C...

Embodiment 3

[0050] Embodiment 3: Degreaser W 3 and its preparation method

[0051] (1) Degreaser W 3 The composition, components and molecular formula are as follows:

[0052] Degreaser W 3 Cationic degreasing agent is produced by reacting perfluorotriethylamine with 3,7-dioctyl-1-bromomethylnaphthalene in ethanol solution, and its molecular formula is as follows:

[0053]

[0054] The molar ratio of perfluorotriethylamine to 3,7-dioctyl-1-bromomethylnaphthalene is 1:1.4.

[0055] (2) Degreaser W 3 The preparation method is as follows:

[0056] ① Add 1 mol of perfluorotriethylamine to 5420g of ethanol, stir at 45°C, the stirring rate is 320rpm, and the stirring time is 23min, then slowly add 3.562g of catalyst potassium carbonate dropwise, react for 2h, cool down to room temperature, Obtain solution A;

[0057] ② Add 1.4mol of 3,7-dioctyl-1-bromomethylnaphthalene to solution A, slowly raise the temperature to 80°C, stir at 500rpm, react for 12h, then cool down to 45°C, react for 1...

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Abstract

The invention belongs to the technical field of oil field sewage treatment, and in particular relates to a degreasing agent for oily sewage treatment in oil fields and a preparation method thereof. The degreasing agent is composed of perfluorotriethylamine and 3,7-dioctyl 1-Bromomethylnaphthalene reacts to form a cationic degreaser. Wherein, the molar ratio of perfluorotriethylamine to 3,7-dioctyl-1-bromomethylnaphthalene is 1:1-1.6, preferably 1:1.2. The degreasing agent of the present invention has the characteristics of simple process, low cost, strong adaptability, strong temperature resistance and good degreasing effect. Some medicaments are increased by more than 50%; and the recovered oil produced by separation does not affect the subsequent dehydration of crude oil. Therefore, the present invention can be widely used in the oil removal treatment process of oily sewage in oil fields.

Description

technical field [0001] The invention relates to a degreasing agent for treating oily sewage, in particular to a degreasing agent for treating oily sewage in an oilfield and a preparation method thereof. Background technique [0002] With the rapid development of the petroleum industry, more and more oilfield sewage is produced. How to deal with this kind of sewage has gradually become a serious problem for oil companies. If these oily sewage is discharged directly without treatment, it will seriously pollute the environment and waste water. resource. In order to effectively utilize the sewage produced by oilfields, it is necessary to effectively treat the sewage. [0003] The current conventional treatment process (natural sedimentation-coagulation sedimentation-filtration) is difficult to effectively treat heavy oil thermal recovery wastewater. Another method to remove crude oil from oilfield sewage is chemical method, that is, using degreaser method. Degreasers are gene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C211/63C07C209/12B01F17/18C02F1/40C02F1/54C02F103/36C09K23/18
CPCC02F1/40C02F1/547C07C209/12C07C211/63C02F2103/365C09K23/00
Inventor 张静
Owner 克拉玛依中科恒信科技有限责任公司
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