A temperature-resistant and highly efficient degreasing agent for oily sewage and its preparation method

A degreasing agent and oily sewage technology, which is applied in the field of temperature-resistant and high-efficiency oily sewage degreasing agent and its preparation, can solve the problems of single component of degreasing agent, complex preparation process, poor degreasing effect, etc. Simple synthesis process and high oil removal efficiency

Inactive Publication Date: 2019-07-02
深圳市富益达材料科技有限公司
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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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  • A temperature-resistant and highly efficient degreasing agent for oily sewage and its preparation method
  • A temperature-resistant and highly efficient degreasing agent for oily sewage and its preparation method
  • A temperature-resistant and highly efficient degreasing agent for oily sewage and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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

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

[0031]

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

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

[0034] ①Add 1 mol of perfluorotriethylamine to 5565g of ethanol, stir at 40°C with a stirring rate of 250rpm, and continue to stir for 6 minutes, then slowly add 0.371g of catalyst dimethyl sulfate dropwise, after the addition of the catalyst is completed, cool down to room temperature to obtain solution A;

[0035] ② Add 0.8 mol of 3-dodecyl-5-octylbenzyl bromide to solution A, slowly raise the temperature to 82°C, stir at 450rpm, react for 8h, then cool...

Embodiment 2

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

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

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

[0042]

[0043] The molar ratio of perfluorotriethylamine to 3-dodecyl-5-octylbenzyl bromide is 1:1.1.

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

[0045] ①Add 1 mol of perfluorotriethylamine to 4250g of ethanol, stir at 45°C with a stirring rate of 300rpm, and continue to stir for 8min, then slowly add 0.758g of catalyst dimethyl sulfate dropwise, after the addition of the catalyst is completed, cool down to room temperature to obtain solution A;

[0046] ② Add 1.1 mol of 3-dodecyl-5-octylbenzyl bromide to solution A, slowly raise the temperature to 84°C, stir at 500rpm, react for 9h, then cool down...

Embodiment 3

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

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

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

[0053]

[0054] The molar ratio of perfluorotriethylamine to 3-dodecyl-5-octylbenzyl bromide is 1:1.3.

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

[0056] ①Add 1 mol of perfluorotriethylamine to 3052g of ethanol, stir at 55°C at a stirring rate of 320rpm, continue stirring for 5min, then slowly add 1.235g of catalyst dimethyl sulfate dropwise, after the addition of the catalyst is completed, cool down to room temperature to obtain solution A;

[0057] ②Add 1.3 mol of 3-dodecyl-5-octylbenzyl bromide into solution A, slowly raise the temperature to 80°C, stir at 460rpm, react for 12h, then cool down to 6...

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Abstract

The invention belongs to the technical field of oil field sewage treatment, and particularly relates to a heat-resistant high-effective oil removal agent for oil-containing sewage and a preparation method thereof. The oil removal agent is a cationic oil removal agent prepared by performing a reaction to perfluorotriethylamine and 3-dodecyl-5-octylbenzylbromine in an ethanol solution, wherein the molar ratio of the perfluorotriethylamine to the 3-dodecyl-5-octylbenzylbromine is 1:0.8-1.5, preferably 1:1.1. The oil removal agent has simple process, low cost and strong adaptability, has good heat resistance and oil removal effect, is 250 DEG C in maximum temperature resistance and reaches more than 97% in oil removal rate to the oil-containing sewage, which is increased by more than 50% than medicines in the prior art. In addition, recovered oil, produced through separation, has no influence on subsequent crude oil dehydration, so that the oil removal agent can be widely applied to oil removal process for oil-containing sewage in an oil field.

Description

technical field [0001] The invention relates to a degreasing agent for oilfield sewage treatment, in particular to a temperature-resistant and high-efficiency 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. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D17/04C02F1/00C02F1/52C02F103/10
CPCB01D17/048C02F1/00C02F1/52C02F2101/32C02F2103/10C02F2305/04
Inventor 张静
Owner 深圳市富益达材料科技有限公司
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