CN110937778A - Oil sludge cleaning agent and preparation method thereof - Google Patents
Oil sludge cleaning agent and preparation method thereof Download PDFInfo
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- CN110937778A CN110937778A CN201911270271.8A CN201911270271A CN110937778A CN 110937778 A CN110937778 A CN 110937778A CN 201911270271 A CN201911270271 A CN 201911270271A CN 110937778 A CN110937778 A CN 110937778A
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/148—Combined use of inorganic and organic substances, being added in the same treatment step
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- Treatment Of Sludge (AREA)
Abstract
The invention discloses an oil sludge cleaning agent and a preparation method thereof. The preparation method of the oil sludge cleaning agent comprises the following steps: mixing 50-80 parts of water, 2-5 parts of sodium dodecyl benzene sulfonate, 2-5 parts of octyl decyl glucoside, 2-5 parts of sodium lignin sulfonate and 0.5-2 parts of a dispersing agent in parts by weight, heating to 55-65 ℃, and stirring for reacting for 1-2 hours to obtain a solution 1; and adding 1-10 parts of phosphate, 1-10 parts of silicate, 0.5-2 parts of inorganic salt and 1-5 parts of alkali into the solution 1, and stirring for reacting for 1-3 hours to obtain the liquid oil sludge cleaning agent. The cleaning agent is added into the oil sludge, the addition amount of the cleaning agent for the oil sludge is 1-10% of the mass of the oil sludge, and three-phase separation of oil, water and sludge is achieved through stirring and centrifuging steps. The invention has the advantages of high oil-sludge separation efficiency, low cost, wide applicability and the like.
Description
Technical Field
The invention belongs to the technical field of demulsifiers in the petrochemical industry, and particularly relates to an oil sludge cleaning agent and a preparation method thereof.
Background
In the petrochemical industry, oil sludge pollution has become a major pollutant that harms the environment and has been classified as a hazardous solid waste. The oil sludge is sticky, has high oil content, fine particles, serious partial emulsification and complex components, contains a large amount of aged heavy oil, wax, asphaltene, colloid, solid suspended matters, bacteria, salts, acid gas, corrosion products and the like, and is difficult to realize multiphase separation in water, thereby increasing the treatment difficulty and the cost. Meanwhile, the oil-containing composite material has high comprehensive utilization value due to extremely high oil content.
The existing methods for treating the oil sludge comprise stripping, heating and settling, burning, adding chemical agents and the like, but the recovery rate of the existing methods for stripping, heating and settling and the like is very low; the incineration method causes a great deal of resource waste and has high treatment cost; the method for adding chemical agents also relates to the problems of screening of the agents, material transfer, separation and the like.
Chinese patent CN201410739352.9 discloses a preparation method of an oil sludge separating agent, which comprises the following steps: 1) mixing phosphoric acid and methyl orange for reaction, and heating to 220 ℃ and 300 ℃; 2) adding the mixture obtained in the step 1 into potassium permanganate; 3) and (4) adding the mixture obtained in the step (3) into a surfactant, uniformly stirring, and extracting a reactant. The oil-sludge separating agent disclosed by the patent has the advantages of high-efficiency oil-sludge separation and environmental protection, but the preparation temperature is as high as 220-300 ℃, and the requirement on reaction conditions is higher.
Aiming at the problems in the prior art, the invention develops the oil sludge cleaning agent and the preparation method thereof, and the oil sludge cleaning agent has lower requirement on the property of the oil sludge, has wide applicability, recycles water, does not discharge waste water and does not have secondary pollution.
Disclosure of Invention
The invention aims to provide an oil sludge cleaning agent and a preparation method thereof. The invention has the advantages of high oil-sludge separation efficiency, low cost, wide applicability and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of the oil sludge cleaning agent comprises the following steps:
(1) mixing 50-80 parts of water, 2-5 parts of sodium dodecyl benzene sulfonate, 2-5 parts of octyl decyl glucoside, 2-5 parts of sodium lignin sulfonate and 0.5-2 parts of a dispersing agent in parts by weight, heating to 55-65 ℃, and stirring for reacting for 1-2 hours to obtain a solution 1;
(2) and adding 1-10 parts of phosphate, 1-10 parts of silicate, 0.5-2 parts of inorganic salt and 1-5 parts of alkali into the solution 1, and stirring for reacting for 1-3 hours to obtain the liquid oil sludge cleaning agent.
Further, the dispersant is selected from one or two of sodium methylene dinaphthalene sulfonate (NNO) and sodium methylene dinaphthalene sulfonate (MF).
Further, the phosphate is selected from one or more of sodium pyrophosphate, sodium tripolyphosphate, disodium hydrogen phosphate, sodium dihydrogen phosphate and trisodium phosphate.
Further, the silicate is selected from one or more of layer silicon, sodium silicate and sodium metasilicate.
Further, the inorganic salt is one of sodium chloride, sodium sulfate, sodium carbonate, sodium citrate and disodium ethylene diamine tetraacetate.
Further, the alkali is selected from one or two of sodium hydroxide and potassium hydroxide.
On the other hand, the invention also provides the oil sludge cleaning agent prepared by the preparation method.
In another aspect, the invention also provides an application of the oil sludge cleaning agent, wherein the oil sludge cleaning agent is added into the oil sludge, the addition amount of the oil sludge cleaning agent is 1-10% of the mass of the oil sludge, and three-phase separation of oil, water and mud is achieved through stirring and centrifuging.
The invention has the following technical characteristics:
1) the oil sludge cleaning agent disclosed by the invention is easy to obtain preparation raw materials, simple in preparation method, mild in preparation conditions and low in preparation cost.
2) When the oil sludge cleaning agent is applied, the dosage is low, the oil sludge separation effect is good, and the application cost is low.
3) The oil sludge cleaning agent disclosed by the invention has lower requirements on the properties of oil sludge and is wider in applicability.
4) The oil sludge cleaning agent disclosed by the invention has the advantages of thorough oil recovery and high resource recycling, and is low in energy consumption and energy-saving.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.
Example 1:
preparing an oil sludge cleaning agent: mixing 60 parts of water, 5 parts of sodium dodecyl benzene sulfonate, 5 parts of octyl decyl glucoside, 5 parts of sodium lignin sulfonate and 1 part of dispersing agent MF, heating to 60 ℃, and stirring for reacting for 1 hour to obtain a solution 1; and adding 1 part of sodium pyrophosphate, 5 parts of sodium silicate, 1 part of sodium chloride and 1 part of sodium hydroxide into the solution 1, and stirring for reacting for 2 hours to obtain the liquid sludge cleaning agent.
The application comprises the following steps: the product prepared according to the embodiment is applied to the treatment of oil sludge in Liaohe oil field, and the oil sludge comprises the following components: the oil content is 35%, the water content is 50%, the ash content is 5%, other substances are 10%, the oil sludge cleaning agent is 5% of the mass of the oil sludge, after the oil sludge cleaning agent is added, the mixture is stirred at 70 ℃ and subjected to ultrasonic reaction for 30min, after the stirring reaction is finished, the solution is filled into a centrifugal tube and put into a centrifugal machine, the centrifugal tube is centrifuged for 5min at the rotating speed of 3000r/min, the centrifugal tube is taken out, the floating oil and the solution on the upper layer are scraped, the sediment at the bottom is taken out (the wall of the centrifugal tube is not touched in the process), the sediment is put into a clean glass container, three-phase separation of oil, water and.
Example 2
Preparing an oil sludge cleaning agent: mixing 65 parts of water, 2 parts of sodium dodecyl benzene sulfonate, 5 parts of octyl decyl glucoside, 2 parts of sodium lignin sulfonate and 1.5 parts of dispersant NNO in parts by weight, heating to 60 ℃, and stirring for reacting for 1 hour to obtain a solution 1; and adding 1 part of sodium tripolyphosphate, 5 parts of sodium metasilicate, 1.5 parts of sodium chloride and 1 part of potassium hydroxide into the solution 1, and stirring for reacting for 2 hours to obtain the liquid oil sludge cleaning agent.
The application comprises the following steps: the product prepared according to the embodiment is applied to the treatment of oil sludge in the Tuha oil field, and the oil sludge comprises the following components: the oil content is 61.4%, the water content is 34.0%, the ash content is 3%, other substances are 1.6%, the oil sludge cleaning agent accounts for 5% of the mass of the oil sludge, after the oil sludge cleaning agent is added, the mixture is stirred at 70 ℃ and subjected to ultrasonic reaction for 30min, after the stirring reaction is finished, the solution is filled into a centrifuge tube and put into a centrifuge, the centrifuge tube is centrifuged for 5min at the rotating speed of 3000r/min, the centrifuge tube is taken out, the upper-layer floating oil and the solution are scraped, bottom silt is taken out (the wall of the centrifuge tube is not touched in the process), the sediment is put into a clean glass container, three-phase separation of oil, water and mud is achieved.
Example 3
Preparing an oil sludge cleaning agent: mixing 65 parts of water, 2 parts of sodium dodecyl benzene sulfonate, 5 parts of octyl decyl glucoside, 5 parts of sodium lignin sulfonate and 1 part of dispersant NNO in parts by weight, heating to 60 ℃, and stirring for reacting for 1 hour to obtain a solution 1; to solution 1, 1 part of disodium hydrogenphosphate, 5 parts of layered silicon, and 1.5 parts of
And stirring and reacting the sodium chloride and 1 part of potassium hydroxide for 2 hours to obtain the liquid oil sludge cleaning agent.
The application comprises the following steps: the product prepared according to the embodiment is applied to the treatment of oil sludge in a port of a Zhoushan, and the oil sludge in the oil field comprises the following components: the oil content is 54.8%, the water content is 25.0%, the ash content is 14.2%, other substances are 6%, the oil sludge cleaning agent accounts for 6% of the mass of the oil sludge, after the oil sludge cleaning agent is added, the mixture is stirred at 70 ℃ and subjected to ultrasonic reaction for 30min, after the stirring reaction is finished, the solution is filled into a centrifugal tube and put into a centrifugal machine, the centrifugal tube is centrifuged for 5min at the rotating speed of 3000r/min, the centrifugal tube is taken out, the upper-layer floating oil and the upper-layer solution are scraped, bottom silt is taken out (the wall of the centrifugal tube is not touched in the process), the bottom silt is put into a clean glass container, three-phase separation of oil, water.
Comparative example 1
An oil sludge cleaning agent comprises an earth eluent and an emulsifier. The soil eluent is prepared by mixing the following raw materials in percentage by mass: 3-6% of sodium sulfate, 2.5-5% of limonene, 0.3-0.5% of organic acid, 1-2% of propylene bis (octadecyl dimethyl ammonium chloride) and 87.5-93.2% of water; the emulsifier is prepared by mixing the following raw materials in percentage by mass: 10-15% of fatty alcohol-polyoxyethylene ether, 10-20% of hydroxyethyl ethylenediamine, 30-55% of sodium carbonate and 15-25% of rhamnolipid.
The application comprises the following steps: the cleaning agent is applied to the treatment of oil sludge in Liaohe oil field, and the oil sludge comprises the following components: the oil content is 35%, the water content is 50%, the ash content is 5%, other substances are 10%, the oil sludge cleaning agent is 5% of the mass of the oil sludge, after the oil sludge cleaning agent is added, the mixture is stirred at 70 ℃ and subjected to ultrasonic reaction for 30min, after the stirring reaction is finished, the solution is filled into a centrifugal tube and put into a centrifugal machine, the centrifugal tube is centrifuged for 5min at the rotating speed of 3000r/min, the centrifugal tube is taken out, the floating oil and the solution on the upper layer are scraped, the sediment at the bottom is taken out (the wall of the centrifugal tube is not touched in the process), the sediment is put into a clean glass container, three-phase separation of oil, water and.
Comparative example 2
The oil sludge cleaning agent is prepared by mixing the following raw materials in percentage by mass: 2-8% of emulsifier, 1-5% of builder, 6-15% of sodium dodecyl benzene sulfonate, 1-8% of dodecyl trimethyl ammonium chloride, 2-6% of thickener, 1-5% of chelating agent and the balance of water. Wherein the emulsifier is sorbitan fatty acid ester (span 80), builder sodium tripolyphosphate, the thickener is coconut oil diethanolamide (6501), and the chelating agent is sodium citrate.
The application comprises the following steps: the cleaning agent is applied to the treatment of oil sludge in the Tuhao oil field, and the oil sludge in the oil field comprises the following components: the oil content is 61.4%, the water content is 34.0%, the ash content is 3%, other substances are 1.6%, the oil sludge cleaning agent accounts for 5% of the mass of the oil sludge, after the oil sludge cleaning agent is added, the mixture is stirred at 70 ℃ and subjected to ultrasonic reaction for 30min, after the stirring reaction is finished, the solution is filled into a centrifuge tube and put into a centrifuge, the centrifuge tube is centrifuged for 5min at the rotating speed of 3000r/min, the centrifuge tube is taken out, the upper-layer floating oil and the solution are scraped, bottom silt is taken out (the wall of the centrifuge tube is not touched in the process), the sediment is put into a clean glass container, three-phase separation of oil, water and mud is achieved.
Comparative example 3
The oil sludge cleaning agent is prepared by mixing the following raw materials in percentage by mass: 0.12% of sodium silicate, 0.10% of carbamide, 0.02% of sodium dodecyl benzene sulfonate and 99.76% of water.
The application comprises the following steps: the cleaning agent is applied to the treatment of oil sludge in the port of the Zhoushan, and the oil sludge in the oil field comprises the following components: the oil content is 54.8%, the water content is 25.0%, the ash content is 14.2%, other substances are 6%, the oil sludge cleaning agent accounts for 6% of the mass of the oil sludge, after the oil sludge cleaning agent is added, the mixture is stirred at 70 ℃ and subjected to ultrasonic reaction for 30min, after the stirring reaction is finished, the solution is filled into a centrifugal tube and put into a centrifugal machine, the centrifugal tube is centrifuged for 5min at the rotating speed of 3000r/min, the centrifugal tube is taken out, the upper-layer floating oil and the upper-layer solution are scraped, bottom silt is taken out (the wall of the centrifugal tube is not touched in the process), the bottom silt is put into a clean glass container, three-phase separation of oil.
The oil-washing effects of examples 1-3 and comparative examples 1-3 are listed in the following table:
| numbering | Initial oil content% | Oil content after treatment% | Oil washing rate% |
| Example 1 | 35.0％ | ＜1％ | 99.5％ |
| Example 2 | 61.4％ | ＜1％ | 99.8％ |
| Example 3 | 54.8％ | ＜1％ | 99.2％ |
| Comparative example 1 | 35.0％ | 5％ | 95.0％ |
| Comparative example 2 | 61.4％ | 6％ | 98.1％ |
| Comparative example 3 | 54.8％ | 8％ | 94.2％ |
As can be seen from the table above, the oil sludge separation effect of the oil sludge cleaning agent is better than that of other oil sludge cleaning agents when the oil sludge cleaning agent is applied.
The above description of the embodiments is only intended to facilitate the understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (8)
1. The preparation method of the oil sludge cleaning agent is characterized by comprising the following steps:
(1) mixing 50-80 parts of water, 2-5 parts of sodium dodecyl benzene sulfonate, 2-5 parts of octyl decyl glucoside, 2-5 parts of sodium lignin sulfonate and 0.5-2 parts of a dispersing agent in parts by weight, heating to 55-65 ℃, and stirring for reacting for 1-2 hours to obtain a solution 1;
(2) and adding 1-10 parts of phosphate, 1-10 parts of silicate, 0.5-2 parts of inorganic salt and 1-5 parts of alkali into the solution 1, and stirring for reacting for 1-3 hours to obtain the liquid oil sludge cleaning agent.
2. The preparation method according to claim 1, wherein the dispersant is one or two selected from sodium methylenedinaphthalene sulfonate (NNO) and sodium methylenedinaphthalene sulfonate (MF).
3. The preparation method according to claim 1, wherein the phosphate is selected from one or more of sodium pyrophosphate, sodium tripolyphosphate, disodium hydrogen phosphate, sodium dihydrogen phosphate and trisodium phosphate.
4. The preparation method according to claim 1, wherein the silicate is selected from one or more of layer silicon, sodium silicate and sodium metasilicate.
5. The method according to claim 1, wherein the inorganic salt is one of sodium chloride, sodium sulfate, sodium carbonate, sodium citrate, and disodium ethylenediaminetetraacetate.
6. The method according to claim 1, wherein the alkali is one or two selected from sodium hydroxide and potassium hydroxide.
7. A sludge cleaning agent prepared by the preparation method according to any one of claims 1 to 6.
8. The application of the sludge cleaning agent as claimed in any one of claims 1 to 7, wherein the sludge cleaning agent is added into the sludge, the addition amount of the sludge cleaning agent is 1-10% of the mass of the sludge, and three-phase separation of oil, water and sludge is achieved through stirring and centrifuging steps.
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Cited By (4)
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| CN111575122A (en) * | 2020-05-27 | 2020-08-25 | 新疆博云时代环保科技有限公司 | Oil sludge cleaning agent and preparation method and application thereof |
| CN111747622A (en) * | 2020-05-29 | 2020-10-09 | 新疆博云时代环保科技有限公司 | Method for efficiently treating oil stains |
| CN111847817A (en) * | 2020-09-01 | 2020-10-30 | 广西大学 | Oil sludge demulsifier, preparation method and application thereof |
| WO2024047742A1 (en) * | 2022-08-30 | 2024-03-07 | 清水建設株式会社 | Method for treating oil-containing sludge, method for recovering oil from oil-containing sludge, apparatus for treating oil-containing sludge, apparatus for recovering oil from oil- containing sludge, system for treating oil-containing sludge, and system for recovering oil from oil-containing sludge |
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