High-temperature high-salt resistant thick oil thermal recovery sewage degreasing agent and preparation method thereof

A technology of heavy oil thermal recovery and degreasing agent, applied in water/sewage treatment, mining wastewater treatment, chemical instruments and methods, etc. Complicated preparation process and other problems, to overcome the effects of poor temperature resistance and salt resistance, good dehydration performance, and simple synthesis process

Active Publication Date: 2017-01-25
深圳市亿歌润滑科技有限公司
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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
At present, there are few patents on the treatment of heavy oily sewage, and there are very few degreasing agents for heavy oily sewage that can be biodegraded

Method used

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  • High-temperature high-salt resistant thick oil thermal recovery sewage degreasing agent and preparation method thereof
  • High-temperature high-salt resistant thick oil thermal recovery sewage degreasing agent and preparation method thereof
  • High-temperature high-salt resistant thick oil thermal recovery sewage degreasing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0029] (1) Degreaser E 1 The composition and its components are as follows:

[0030]

[0031] According to existing literature, the preparation method of described double cationic surfactant is as follows:

[0032]

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

[0034] ①Put 10 parts of water in a beaker in a constant temperature water bath at 40°C, and slowly add 1 part of dicationic surfactant at a stirring rate of 350rpm. After the addition is complete, continue stirring for 30 minutes to obtain a mixed solution;

[0035] ② Adjust the temperature of the above mixed solution to 50°C. After the temperature is constant, slowly add 0.01 part of sodium carboxymethylcellulose at a stirring rate of 200 rpm, and continue stirring for 25 minutes to obtain a transparent solution;

[0036] ③Adjust the temperature of the above transparent solution to 35°C, adjust the stirring rate to 400rpm, an...

Embodiment 2

[0037] Embodiment 2: Degreaser E 2 and its preparation method

[0038] (1) Degreaser E 2 The composition and its components are as follows:

[0039]

[0040] According to existing literature, the preparation method of described double cationic surfactant is as follows:

[0041]

[0042]

[0043] (2) Degreaser E 2 The preparation method is as follows:

[0044] ①In a constant temperature water bath at 30°C, put 15 parts of water in a beaker, and slowly add 1 part of dicative surfactant at a stirring rate of 300rpm. After the addition is complete, continue stirring for 20 minutes to obtain a mixed solution;

[0045] ② Adjust the temperature of the above mixed solution to 52°C. After the temperature is constant, slowly add 0.25 parts of sodium carboxymethylcellulose at a stirring rate of 220 rpm, and continue stirring for 20 minutes to obtain a transparent solution;

[0046] ③Adjust the temperature of the above transparent solution to 38°C, adjust the stirring rate t...

Embodiment 3

[0047] Embodiment 3: Degreaser E 3 and its preparation method

[0048] (1) Degreaser E 3 The composition and its components are as follows:

[0049]

[0050] According to existing literature, the preparation method of described double cationic surfactant is as follows:

[0051]

[0052] (2) Degreaser E 3The preparation method is as follows:

[0053] ①In a constant temperature water bath at 50°C, put 30 parts of water in a beaker, and slowly add 1 part of dicative surfactant at a stirring rate of 400rpm. After the addition is complete, continue stirring for 25 minutes to obtain a mixed solution;

[0054] ② Adjust the temperature of the above mixed solution to 55°C. After the temperature is constant, slowly add 0.75 parts of sodium carboxymethylcellulose at a stirring rate of 250 rpm, and continue stirring for 30 minutes to obtain a transparent solution;

[0055] ③Adjust the temperature of the above transparent solution to 40°C, adjust the stirring rate to 600rpm, and...

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Abstract

The invention belongs to the technical filed of oil field sewage treatment, and in particular relates to a high-temperature high-salt resistant thick oil thermal recovery sewage degreasing agent which is compounded from a dication surfactant, activated silica, sodium carboxymethylcellulose and water, wherein the dication surfactant is a symmetric molecule with long-carbon-chain alkyl and biquaternary ammonium salt cation polar groups. The degreasing agent provided by the invention has the characteristics of simple preparation process, low cost and good temperature and salt resistance, the mineralization resistance degree of the degreasing agent can be up to 250000mg/L, the temperature resistance of the degreasing agent is up to 250 DEG C, and a good degreasing effect can be achieved; the degreasing rate of thick oil thermal recovery sewage can be greater than 96%, and compared with that of a conventional agent, the degreasing rate of the degreasing agent is increased by more than 40%. Therefore, the degreasing agent can be widely applied to degreasing processes of thick oil thermal recovery sewage.

Description

technical field [0001] The invention relates to a degreasing agent for oil field sewage treatment, in particular to a high temperature and high salt resistant heavy oil thermal recovery sewage degreasing agent and a preparation method thereof. Background technique [0002] The viscosity of heavy oil is high, and the sewage treatment produced by mining has always been one of the important links restricting its development. After the crude oil undergoes thermochemical sedimentation treatment in the dehydration process for a period of time, the sediment and other mechanical impurities enter the sewage system together, so that the total amount of suspended solids in the sewage reaches about 20,000mg / L. It makes sewage treatment more difficult. At the same time, in order to lift the ultra-heavy oil to the ground, some surfactants, such as sulfonate and other substances, are added during the oil recovery process, so that the produced fluid needs to be demulsified and dehydrated, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C02F1/28C02F1/56C02F103/10
CPCC02F1/00C02F1/285C02F1/56C02F2103/10C02F2305/04
Inventor 吕小芳
Owner 深圳市亿歌润滑科技有限公司
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