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

A technology for degreasing agent and oily sewage, which is applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc. It can solve problems such as high price, unsatisfactory effect of oily sewage, complicated preparation methods, etc. , to achieve the effects of not easy to decompose, meet environmental protection, and simple synthesis process

Active Publication Date: 2020-07-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main shortcoming of this invention is that its preparation method is complicated, the price is expensive, and the effect to oily sewage is unsatisfactory

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 M 1 and its preparation method

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

[0030] Degreaser M 1 It is a non-ionic degreasing agent produced by the reaction of ethyl benzoate and ethylene oxide at a molar ratio of 1:2, and its molecular formula is as follows:

[0031]

[0032] (2) Degreaser M 1 The preparation method is as follows:

[0033] ① Weigh 1 mol of ethyl benzoate and 75.1 g of catalyst, place them in an autoclave, purge the pipeline and the reactor with nitrogen for 5 minutes, then stir and heat up to 80 °C at a stirring rate of 200 rpm for 5 minutes, then feed 2mol of ethylene oxide, and then feed nitrogen to make the pressure of the reactor reach 0.2MPa, adjust the stirring rate to 470rpm, and raise the temperature to 100°C. After 3 hours of reaction, the system is cooled to room temperature with circulating cooling water, and the obtained mixture.

[0034] ②The above mixture ...

Embodiment 2

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

[0038] (1) Degreaser M 2 The composition, components and molecular formula are as follows:

[0039] Degreaser M 2 It is a non-ionic degreasing agent produced by the reaction of ethyl benzoate and ethylene oxide at a molar ratio of 1:3, and its molecular formula is as follows:

[0040]

[0041] (2) Degreaser M 2 The preparation method is as follows:

[0042] ① Weigh 1 mol of ethyl benzoate and 120.1 g of catalyst, place them in an autoclave, purge the pipeline and the reactor with nitrogen for 6 minutes, then stir and heat up to 90°C at a stirring rate of 230 rpm for 10 minutes, then feed 3mol of ethylene oxide, and then feed nitrogen to make the pressure of the reactor reach 0.5MPa, adjust the stirring rate to 450rpm, and raise the temperature to 120°C. After 4 hours of reaction, the system is cooled to room temperature with circulating cooling water, and the obtained mixture.

[0043] ②The above mixture...

Embodiment 3

[0046] Embodiment 3: Degreaser M 3 and its preparation method

[0047] (1) Degreaser M 3 The composition, components and molecular formula are as follows:

[0048] Degreaser M 3 It is a non-ionic degreasing agent produced by the reaction of ethyl benzoate and ethylene oxide at a molar ratio of 1:4, and its molecular formula is as follows:

[0049]

[0050] (2) Degreaser M 3 The preparation method is as follows:

[0051]① Weigh 1mol of ethyl benzoate and 180.2g of catalyst, place them in an autoclave, purge the pipeline and reactor with nitrogen for 8min, then stir and heat up to 85°C, the stirring rate is 260rpm, after 12min, feed 4mol of ethylene oxide, and then feed nitrogen to make the pressure of the reactor reach 0.6MPa, adjust the stirring rate to 400rpm, and raise the temperature to 150°C. After 4h of reaction, the system is cooled to room temperature with circulating cooling water to obtain mixture.

[0052] ②The above mixture is subjected to gas-liquid separ...

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Abstract

The invention belongs to the technical field of sewage water treatment in an oil field and particularly relates to a degreasing agent for treating oily sewage in an oil field and a preparation method of the degreasing agent. The degreasing agent is a non-ionic type degreasing agent produced by reacting ethyl benzoate with ethylene oxide, wherein the molar ratio of ethyl benzoate to ethylene oxide is 1: (2-5), preferably 1: 3. The degreasing agent has the characteristics of simple process, low cost, high adaptability, high temperature resistance and good degreasing effect and can resist the highest temperature of 250 DEG C, the degreasing rate of the oily sewage is 98% or higher and increased by 55% or higher than that of the oily sewage treated with existing chemicals, recovered oil produced through separation cannot affect following crude oil dehydration, and accordingly, the degreasing agent can be widely applied to degreasing treatment of the oily sewage in the oil field.

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 increasing environmental pollution, the control and treatment of water environmental pollution has gradually attracted enough attention and made progress in all aspects. The current conventional treatment process (natural sedimentation-coagulation sedimentation-filtration) is difficult to effectively treat heavy oil thermal recovery wastewater. For example, the air flotation method uses an air flotation machine to remove most of the oil, polymers and suspended solids in the water, because some oilfield sewage will contain polymers, which will double the viscosity of the sewage and increase the oil-carrying capacity of the water phase; The particle size of medium oil droplets is small, and the oil droplets are stable in the water; the se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/28C02F1/40C07C67/26C07C69/78C02F101/32C02F103/10
CPCC02F1/285C02F1/40C02F2101/32C02F2103/10C07C67/26C07C69/78
Inventor 潘永强袁长忠高生伟吴晓玲刘涛巴燕汤晓东冯云王新耿雪丽
Owner CHINA PETROLEUM & CHEM CORP
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