CN110921773A - Demulsifier for oilfield sewage and preparation method thereof - Google Patents
Demulsifier for oilfield sewage and preparation method thereof Download PDFInfo
- Publication number
- CN110921773A CN110921773A CN201911284892.1A CN201911284892A CN110921773A CN 110921773 A CN110921773 A CN 110921773A CN 201911284892 A CN201911284892 A CN 201911284892A CN 110921773 A CN110921773 A CN 110921773A
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- CN
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- Prior art keywords
- demulsifier
- surfactant
- oilfield sewage
- polyether
- components
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
Abstract
The invention discloses a demulsifier for oilfield sewage, which comprises the following components in percentage by mass: 30-40% of polyether, 25-30% of polymeric aluminum oxide, 13-18% of citric acid, 8-10% of surfactant, 5-10% of carboxymethyl cellulose and the balance of water, wherein the sum of the mass percentages of the components is 100%. The invention also discloses a preparation method of the demulsifier for oilfield sewage, which comprises the steps of weighing, ball milling and stirring in sequence to obtain the demulsifier for oilfield sewage.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a demulsifier for oilfield sewage and a preparation method of the demulsifier for oilfield sewage.
Background
The oil field sewage contains oil substances, such as petroleum, tar and the like, and the oil field sewage is difficult to purify by adopting a common sewage treatment agent. If the oily wastewater is directly discharged without purification, the oily wastewater pollutes soil, air and water sources, influences the ecological balance of water, and crops can not grow normally in the soil and even threaten the life health of people. Therefore, the demulsifier is needed to be used for gathering oil drops and separating oil from water, the demulsifying effect of most conventional demulsifiers is poor, and a great amount of demulsifiers are needed to be added during treatment.
Disclosure of Invention
The invention aims to provide a demulsifier for oilfield sewage, which improves the demulsification speed of the demulsifier.
The invention also aims to provide a preparation method of the demulsifier for oilfield sewage, and the prepared suspended substance flocculant effectively improves the purification efficiency of oilfield sewage.
The first technical scheme adopted by the invention is that the demulsifier for the oilfield sewage comprises the following components in percentage by mass: 30-40% of polyether, 25-30% of polymeric aluminum oxide, 13-18% of citric acid, 8-10% of surfactant, 5-10% of carboxymethyl cellulose and the balance of water, wherein the sum of the mass percentages of the components is 100%.
The first technical solution of the present invention is also characterized in that,
the surfactant is polyether surfactant.
The second technical scheme adopted by the invention is that the preparation method of the demulsifier for the oilfield sewage comprises the following steps:
step 1, weighing the following components for later use according to a mass ratio, wherein the components comprise 30-40% of polyether, 25-30% of polymeric alumina, 13-18% of citric acid, 8-10% of surfactant, 5-10% of carboxymethyl cellulose and the balance of water, and the sum of the mass percentages of the components is 100%;
step 2, adding the polymerized alumina weighed in the step 1 into a ball mill for ball milling to obtain polymerized alumina particles;
and 3, adding the polymerized alumina particles, polyether, citric acid, carboxymethyl cellulose and water into a stirrer, uniformly stirring to obtain a demulsifying mixture, adding a surfactant into the demulsifying mixture, uniformly stirring, and standing for 10-20min to obtain the demulsifier for the oilfield sewage.
The second technical solution of the present invention is also characterized in that,
the fineness of the polymerized alumina particles is 40-60 meshes.
The rotating speed of the stirrer is 600 and 800 r/min.
The invention has the beneficial effects that:
the demulsifier for oilfield sewage provided by the invention has the advantages that each adopted component can play a role in purifying oilfield sewage, and the polyether and the polymeric alumina mainly have the functions of separating oil from water in the sewage and enabling oil drops to be massively aggregated and flocculated; environmental protection, no pollution and low cost.
The preparation method of the demulsifier for oilfield sewage is simple and clear, has strong operability, obtains the demulsifier for oilfield sewage by weighing, ball milling and stirring, has uniform and stable components, effectively obtains oil and water, enables oil drops to aggregate, flocculate and settle, has high flocculation and settling speed, effectively improves the demulsification efficiency of oilfield sewage, and has wide application value.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The invention relates to a demulsifier for oilfield sewage, which comprises the following components in percentage by mass: 30-40% of polyether, 25-30% of polymeric aluminum oxide, 13-18% of citric acid, 8-10% of surfactant, 5-10% of carboxymethyl cellulose and the balance of water, wherein the sum of the mass percentages of the components is 100%, and the surfactant is polyether surfactant.
The invention relates to a preparation method of a demulsifier for oilfield sewage, which is implemented according to the following steps:
step 1, weighing the following components for later use according to a mass ratio, wherein the components comprise 30-40% of polyether, 25-30% of polymeric alumina, 13-18% of citric acid, 8-10% of surfactant, 5-10% of carboxymethyl cellulose and the balance of water, and the sum of the mass percentages of the components is 100%;
step 2, adding the polymeric alumina weighed in the step 1 into a ball mill for ball milling to obtain polymeric alumina particles with the fineness of 40-60 meshes;
and 3, adding the polymerized alumina particles, polyether, citric acid, carboxymethyl cellulose and water into a stirrer with the rotation speed of 600-800r/min, uniformly stirring to obtain a demulsification mixture, adding a surfactant into the demulsification mixture, uniformly stirring, and standing for 10-20min to obtain the demulsifier for the oilfield sewage.
Example 1
The embodiment provides a demulsifier for oilfield sewage, which comprises the following components in percentage by mass: 30% of polyether, 25% of polymeric aluminum oxide, 13% of citric acid, 8% of surfactant, 5% of carboxymethyl cellulose and the balance of water, wherein the sum of the mass percentages of the components is 100%, and the surfactant is polyether surfactant.
The embodiment also provides a preparation method of the demulsifier for oilfield sewage, which is used for preparing the demulsifier for oilfield sewage of the embodiment and is implemented according to the following steps:
step 1, weighing the following components for later use according to a mass ratio, wherein the components comprise 30% of polyether, 25% of polymeric aluminum oxide, 13% of citric acid, 8% of surfactant, 5% of carboxymethyl cellulose and the balance of water, the sum of the mass percentages of the components is 100%, and the surfactant is polyether surfactant;
step 2, adding the polymeric alumina weighed in the step 1 into a ball mill for ball milling to obtain polymeric alumina particles with the fineness of 40 meshes;
and 3, adding the polymerized alumina particles, polyether, citric acid, carboxymethyl cellulose and water into a stirrer with the rotating speed of 600r/min, uniformly stirring to obtain a demulsification mixture, adding a surfactant into the demulsification mixture, uniformly stirring, and standing for 10min to obtain the demulsifier for the oilfield sewage.
Example 2
The embodiment provides a demulsifier for oilfield sewage, which comprises the following components in percentage by mass: 40% of polyether, 30% of polymeric aluminum oxide, 13% of citric acid, 8% of surfactant, 5% of carboxymethyl cellulose and the balance of water, wherein the sum of the mass percentages of the components is 100%, and the surfactant is polyether surfactant.
The embodiment also provides a preparation method of the demulsifier for oilfield sewage, which is used for preparing the demulsifier for oilfield sewage of the embodiment and is implemented according to the following steps:
step 1, weighing the following components for later use according to a mass ratio, wherein the components comprise 40% of polyether, 30% of polymeric aluminum oxide, 13% of citric acid, 8% of surfactant, 5% of carboxymethyl cellulose and the balance of water, the sum of the mass percentages of the components is 100%, and the surfactant is polyether surfactant;
step 2, adding the polymerized alumina weighed in the step 1 into a ball mill for ball milling to obtain polymerized alumina particles with the fineness of 60 meshes;
and 3, adding the polymerized alumina particles, polyether, citric acid, carboxymethyl cellulose and water into a stirrer with the rotating speed of 800r/min, uniformly stirring to obtain a demulsification mixture, adding a surfactant into the demulsification mixture, uniformly stirring, and standing for 20min to obtain the demulsifier for the oilfield sewage.
Example 3
The embodiment provides a demulsifier for oilfield sewage, which comprises the following components in percentage by mass: 30% of polyether, 30% of polymeric aluminum oxide, 18% of citric acid, 10% of surfactant, 10% of carboxymethyl cellulose and the balance of water, wherein the sum of the mass percentages of the components is 100%, and the surfactant is polyether surfactant.
The embodiment also provides a preparation method of the demulsifier for oilfield sewage, which is used for preparing the demulsifier for oilfield sewage of the embodiment and is implemented according to the following steps:
step 1, weighing the following components for later use according to a mass ratio, wherein the components comprise 30% of polyether, 30% of polymeric aluminum oxide, 18% of citric acid, 10% of surfactant, 10% of carboxymethyl cellulose and the balance of water, the sum of the mass percentages of the components is 100%, and the surfactant is polyether surfactant;
step 2, adding the polymerized alumina weighed in the step 1 into a ball mill for ball milling to obtain polymerized alumina particles with the fineness of 50 meshes;
and 3, adding the polymerized alumina particles, polyether, citric acid, carboxymethyl cellulose and water into a stirrer with the rotating speed of 700r/min, uniformly stirring to obtain a demulsification mixture, adding a surfactant into the demulsification mixture, uniformly stirring, and standing for 14min to obtain the demulsifier for the oilfield sewage.
Claims (5)
1. The demulsifier for oilfield sewage is characterized by comprising the following components in percentage by mass: 30-40% of polyether, 25-30% of polymeric aluminum oxide, 13-18% of citric acid, 8-10% of surfactant, 5-10% of carboxymethyl cellulose and the balance of water, wherein the sum of the mass percentages of the components is 100%.
2. The method for preparing the demulsifier for oilfield sewage according to claim 2, wherein the surfactant is a polyether surfactant.
3. The preparation method of the demulsifier for oilfield sewage is characterized by comprising the following steps:
step 1, weighing the following components for later use according to a mass ratio, wherein the components comprise 30-40% of polyether, 25-30% of polymeric alumina, 13-18% of citric acid, 8-10% of surfactant, 5-10% of carboxymethyl cellulose and the balance of water, and the sum of the mass percentages of the components is 100%;
step 2, adding the polymerized alumina weighed in the step 1 into a ball mill for ball milling to obtain polymerized alumina particles;
and 3, adding the polymerized alumina particles, polyether, citric acid, carboxymethyl cellulose and water into a stirrer, uniformly stirring to obtain a demulsifying mixture, adding a surfactant into the demulsifying mixture, uniformly stirring, and standing for 10-20min to obtain the demulsifier for the oilfield sewage.
4. The method for preparing the demulsifier for oilfield sewage according to claim 3, wherein the fineness of the polymeric alumina particles is 40-60 meshes.
5. The method for preparing the demulsifier for oilfield wastewater according to claim 2, wherein the rotation speed of the stirrer is 600-800 r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911284892.1A CN110921773A (en) | 2019-12-13 | 2019-12-13 | Demulsifier for oilfield sewage and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911284892.1A CN110921773A (en) | 2019-12-13 | 2019-12-13 | Demulsifier for oilfield sewage and preparation method thereof |
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| CN110921773A true CN110921773A (en) | 2020-03-27 |
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| CN201911284892.1A Pending CN110921773A (en) | 2019-12-13 | 2019-12-13 | Demulsifier for oilfield sewage and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102627380A (en) * | 2012-04-19 | 2012-08-08 | 重庆融极环保工程有限公司 | Efficient acidic oil sludge decomposing agent, and preparation method and application thereof |
| CN105253974A (en) * | 2015-10-30 | 2016-01-20 | 广州振清环保技术有限公司 | Invert-demulsion coagulating agent, preparation method of invert-demulsion coagulating agent and application of invert-demulsion coagulating agent |
| CN106044945A (en) * | 2016-07-14 | 2016-10-26 | 慎叶 | Novel composite demulsifier for environmental protection and preparation method of novel composite demulsifier |
| CN108314290A (en) * | 2018-02-09 | 2018-07-24 | 江苏大洋环保工程有限公司 | A kind of processing method of oily sludge |
-
2019
- 2019-12-13 CN CN201911284892.1A patent/CN110921773A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102627380A (en) * | 2012-04-19 | 2012-08-08 | 重庆融极环保工程有限公司 | Efficient acidic oil sludge decomposing agent, and preparation method and application thereof |
| CN105253974A (en) * | 2015-10-30 | 2016-01-20 | 广州振清环保技术有限公司 | Invert-demulsion coagulating agent, preparation method of invert-demulsion coagulating agent and application of invert-demulsion coagulating agent |
| CN106044945A (en) * | 2016-07-14 | 2016-10-26 | 慎叶 | Novel composite demulsifier for environmental protection and preparation method of novel composite demulsifier |
| CN108314290A (en) * | 2018-02-09 | 2018-07-24 | 江苏大洋环保工程有限公司 | A kind of processing method of oily sludge |
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Application publication date: 20200327 |