Deoiling agent for oily sewage and preparation method thereof

A technology for degreasing agent and sewage, which is applied in water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc. It can solve the problems of single component of degreasing agent, complex preparation process, poor salt resistance, etc. , to achieve the effect of meeting environmental protection, simple synthesis process, and strong temperature resistance

Inactive Publication Date: 2017-07-14
徐州汉高科技发展有限公司
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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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  • Deoiling agent for oily sewage and preparation method thereof
  • Deoiling agent for oily sewage and preparation method thereof
  • Deoiling agent for oily sewage and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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

[0030] Degreaser U 1 Cationic degreasing agent is produced by reacting perfluorotriethylamine with 3-methyl bromide-5-dodecylpyridine in ethanol solution, and its molecular formula is as follows:

[0031]

[0032] The molar ratio of perfluorotriethylamine to 3-methyl bromide-5-dodecylpyridine is 1:0.8.

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

[0034] ①Add 1 mol of perfluorotriethylamine to 3710g of ethanol, stir at 45°C, the stirring rate is 250rpm, and the stirring time is 30min, then slowly add 2.60g of catalyst potassium carbonate dropwise, after the addition of the catalyst is completed, cool down naturally to room temperature to obtain solution A;

[0035] ②Add 0.8mol of 3-methyl bromide-5-dodecylpyridine into solution A, slowly raise the temperature to 80°C, stir at 460rpm, react fo...

Embodiment 2

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

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

[0041] Degreaser U 2 Cationic degreasing agent is produced by reacting perfluorotriethylamine with 3-methyl bromide-5-dodecylpyridine in ethanol solution, and its molecular formula is as follows:

[0042]

[0043] The molar ratio of perfluorotriethylamine to 3-methyl bromide-5-dodecylpyridine is 1:1.0.

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

[0045] ① Add 1 mol of perfluorotriethylamine to 5100g of ethanol, stir at 50°C, the stirring rate is 300rpm, and the stirring time is 33min, then slowly add 3.12g of catalyst potassium carbonate dropwise, after the addition of the catalyst is completed, cool down naturally to room temperature to obtain solution A;

[0046] ②Add 1.0mol of 3-methylbromo-5-dodecylpyridine to solution A, slowly raise the temperature to 85°C, stir at 480rpm, react for 11...

Embodiment 3

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

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

[0052] Degreaser U 3 Cationic degreasing agent is produced by reacting perfluorotriethylamine with 3-methyl bromide-5-dodecylpyridine in ethanol solution, and its molecular formula is as follows:

[0053]

[0054] The molar ratio of perfluorotriethylamine to 3-methyl bromide-5-dodecylpyridine is 1:1.2.

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

[0056] ①Add 1 mol of perfluorotriethylamine to 6530g of ethanol, stir at 55°C, the stirring rate is 350rpm, and the stirring time is 37min, then slowly add 3.95g of catalyst potassium carbonate dropwise, after the catalyst is added, cool down naturally to room temperature to obtain solution A;

[0057] ②Add 1.2 mol of 3-methylbromo-5-dodecylpyridine into solution A, slowly raise the temperature to 82°C, stir at 450rpm, react for 10h, then cool down to...

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Abstract

The invention belongs to the technical field of oil field sewage treatment and particularly relates to a deoiling agent for oily sewage and a preparation method thereof. The deoiling agent is a cationic type deoiling agent being prepared by performing a reaction to perfluorotriethylamine and 3-methylbromo-5-dodecylpyridine in an ethanol solution, wherein molar ratio of the perfluorotriethylamine to the 3-methylbromo-5-dodecylpyridine 1:0.8-1.4, preferably 1:1.0. The deoiling agent is simple in preparation process, low in cost and strong in adaptability and has good temperature resistance and good deoiling effect, wherein maximum temperature resistance reaches 250 DEG C and deoiling rate to the oily sewage reaches more than 97%, which is improved than that of medicines in the prior art by more than 50%. Recycled oil, which is generated by separation, has no influence on subsequent crude oil dehydration, so that the deoiling agent can be widely applied to oil removal treatment for oily sewage in oil field.

Description

technical field [0001] The invention relates to a degreasing agent for oilfield sewage treatment, in particular to an oily sewage degreasing agent 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 generally divided into the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D213/36B01F17/18C02F1/54C02F103/10C09K23/18
CPCC02F1/547C07D213/36C02F2103/10C09K23/00
Inventor 张静
Owner 徐州汉高科技发展有限公司
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