Petroleum cleaning agent suitable for soil with different textures and cleaning method of petroleum cleaning agent
Through the petroleum cleaning agent composed of sodium dodecyl sulfate, octylphenyl polyoxyethylene ether and sodium tridecanoate, the oscillator elution process is used to solve the problem of poor cleaning effect of petroleum pollution in soils of different textures, and achieve the Efficient petroleum elution and adaptability to soil texture differences.
Patent Information
- Application Number
- CN202411435497.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-01-10
AI Technical Summary
Oil pollution in soils of different textures. Due to the existence of soil agglomerates and clay minerals, the cleaning effect of surfactants is reduced, and it cannot effectively remove oil pollution, which has become a bottleneck in chemical cleaning technology.
The petroleum cleaning agent composed of sodium dodecyl sulfate, octylphenyl polyoxyethylene ether and sodium tridecanoate is used to reduce the adsorption of surfactant by clay minerals through the elution process in the shaker, thereby improving the cleaning effect.
The elution rate of petroleum in soils of different textures is significantly improved, ensuring the accurate determination of oil content in subsequent soils and the effect of re-eluting, and solving the problem of poor cleaning effects caused by soil texture differences.
Abstract
Description
Technical Field
[0001] The invention relates to a petroleum cleaning agent and a cleaning method thereof, in particular to a petroleum cleaning agent suitable for soils of different textures and a cleaning method thereof, and belongs to the technical field of chemical cleaning and restoration of petroleum-contaminated soil. Background Art
[0002] As a major fossil energy source, during its mining or transportation process, improper operation and other factors lead to the continuous increase of petroleum hydrocarbon concentration in the soil, which destroys the original function of the soil and thus causes ecological and environmental risks. In this regard, physical methods, chemical methods and biological remediation methods are mainly used for petroleum-contaminated soil. Among them, chemical remediation methods are mainly used for soil contaminated with high concentrations of petroleum. Currently, chemical remediation methods mainly include chemical leaching and chemical cleaning.
[0003] Compared with chemical leaching, chemical washing has better effect in removing petroleum hydrocarbons. Due to the different particle size distribution of soil, the mechanical composition of soil is also different, resulting in differences in soil texture. According to the different content of sand, silt and clay in the soil, soil can be simply divided into three categories: sand, loam and clay. The content of soil clay minerals such as kaolinite, montmorillonite and illite has a great hindering effect on the cleaning effect of petroleum.
[0004] Therefore, the different soil textures lead to a decrease in the cleaning effect of surfactants. The reasons are: first, soil aggregates reduce the contact opportunities between surfactants and petroleum hydrocarbons; second, surfactants are adsorbed by clay minerals or soil organic matter in clay loam, thereby reducing the cleaning effect of surfactants. This has also become a technical bottleneck for the application of chemical cleaning technology. Summary of the invention
[0005] In order to solve the above technical problems, the present invention provides a petroleum cleaning agent suitable for soils of different textures and a cleaning method thereof, the purpose of which is to reduce soil agglomeration, prevent the surfactant from being adsorbed by clay minerals or soil organic matter in clay loam, and increase the cleaning effect of the surfactant.
[0006] To achieve the above object, the present invention is implemented by adopting the following technical solutions: A petroleum cleaning agent suitable for soils of different textures is prepared from the following raw materials: sodium dodecyl sulfate, octylphenyl polyoxyethylene ether, sodium tridecanoate and water.
[0007] Preferably, the above-mentioned petroleum cleaning agent suitable for soils of different textures is prepared from the following raw materials in the aforementioned weight proportions: for cleaning loam, 15-20 parts of sodium dodecyl sulfate, 2 parts of octylphenyl polyoxyethylene ether, 5 parts of sodium tridecanoate, and 100 parts of water.
[0008] Preferably, the petroleum cleaning agent suitable for soils of different textures is prepared from the following raw materials in the aforementioned weight proportions: for clay cleaning, 10 parts of sodium dodecyl sulfate, 3-4 parts of octylphenyl polyoxyethylene ether, 5 parts of sodium tridecanoate, and 100 parts of water.
[0009] Preferably, the above-mentioned cleaning method of a petroleum cleaning agent suitable for soils of different textures comprises the following steps: (1) Place the soil to be cleaned and the cleaning agent in an oscillator and shake repeatedly in the oscillator for elution. The cleaning time is 80-100 minutes, the cleaning intensity is 160-180 rpm, the temperature is 55-65°C, and the mixture is fully mixed and allowed to stand until the crude oil floats on the surface of the solution. (2) Remove the solution floating on the surface to obtain solid soil; (3) The solid soil is washed with deionized water, and the washed soil is placed in a cool place indoors to dry to obtain the washed soil.
[0010] Preferably, in step (1), the weight ratio of the soil to be cleaned to the cleaning agent is 1:10-12.
[0011] Preferably, in step (3), the weight ratio of the soil to be cleaned to deionized water is 1:8-10.
[0012] Preferably, the cleaning agent in step (1) is prepared from the following raw materials in the aforementioned weight proportions: for cleaning loam, 15-20 parts of sodium dodecyl sulfate, 2 parts of octylphenyl polyoxyethylene ether, 5 parts of sodium tridecanoate, and 100 parts of water.
[0013] Preferably, the cleaning agent in step (1) is prepared from the following raw materials in the aforementioned weight proportions: when cleaning clay, 10 parts of sodium dodecyl sulfate, 3-4 parts of octylphenyl polyoxyethylene ether, 5 parts of sodium tridecanoate, and 100 parts of water.
[0014] The octylphenyl polyoxyethylene ether is used in preparing a petroleum cleaning agent suitable for soils of different textures.
[0015] The petroleum cleaning agent is used for cleaning petroleum in soils of different textures.
[0016] Due to the adoption of the above technical solution, the present invention has the following advantages and effects: The combination of sodium dodecyl sulfate (SDS), octylphenyl polyoxyethylene ether (TX-100) and sodium tridecanoate in the present invention effectively solves the adverse effects of petroleum elution on soils of different textures.
[0017] The surfactant used in the present invention can reduce the adsorption of different clay minerals in the soil to petroleum, thereby achieving the purpose of highly efficient elution of petroleum.
[0018] The soil eluted by the method of the present invention does not affect the subsequent determination of the oil content in the soil and the re-elution. DETAILED DESCRIPTION
[0019] The present invention is further described in detail below in conjunction with specific embodiments, but the protection scope of the present invention is not limited by the specific embodiments, but is subject to the claims. In addition, under the premise of not violating the technical solution of the present invention, any modification or change made to the present invention that is easily implemented by a person of ordinary skill in the art will fall within the scope of the claims of the present invention.
[0020] The methods for determining the content of petroleum hydrocarbons in soil in all the following examples and comparative examples are as follows: ultrasound-Soxhlet extraction-gravimetric method.
[0021] Unless otherwise specified, the methods described in the following examples and comparative examples are conventional methods in the art.
[0022] The percentages described in the following examples and comparative examples are by mass unless otherwise specified.
[0023] The soil samples taken are shown in Table 1 Soil samples Sand % Powder % Clay % Soil oil content% Soil texture Soil 1 55~65 18~22 20~25 10~15 Sandy clay loam Soil II 33~38 44~48 18~23 8~13 Loam Soil three 22~27 24~28 50~60 8~14 clay Example 1
[0024] A method for preparing a petroleum cleaning agent suitable for soils of different textures comprises the following steps: adding 20 parts by weight of sodium dodecyl sulfate, 2 parts by weight of octylphenyl polyoxyethylene ether and 5 parts by weight of sodium tridecanoate to 100 parts by weight of water, and stirring the mixture to obtain a cleaning agent for standby use.
[0025] The cleaning method using the above petroleum cleaning agent comprises the following steps: (1) Place the soil to be cleaned and the prepared cleaning agent in an oscillator, with the weight ratio of the soil to be cleaned to the prepared cleaning agent being 1:10, and repeatedly shake in the oscillator for elution. The cleaning time is 100 min, the cleaning intensity is 160 rpm, the temperature is 65°C, and the mixture is fully mixed. Let it stand until the crude oil floats on the surface of the solution; (2) Remove the solution floating on the surface to obtain solid soil; (3) The solid soil is washed with deionized water, and the washed soil is placed in a cool place indoors to dry to obtain the washed soil.
[0026] 100 portions of soil 1 and soil 2 were taken, eluted using the method of this embodiment, and the cleaned soils were tested by weight method. The elution rate of soil 1 was 95.3-98.6%; the elution rate of soil 2 was 93.7-96.6%. Example 2
[0027] A method for preparing a petroleum cleaning agent suitable for soils of different textures comprises the following steps: adding 15 parts by weight of sodium dodecyl sulfate, 2 parts by weight of octylphenyl polyoxyethylene ether and 5 parts by weight of sodium tridecanoate to 100 parts by weight of water, and stirring the mixture to obtain a cleaning agent for standby use.
[0028] The cleaning method using the above petroleum cleaning agent comprises the following steps: (1) Place the soil to be cleaned and the prepared cleaning agent in an oscillator, with the weight ratio of the soil to be cleaned to the prepared cleaning agent being 1:12, and repeatedly shake in the oscillator for elution. The cleaning time is 80 min, the cleaning intensity is 180 rpm, the temperature is 60°C, and the mixture is fully mixed. Let it stand until the crude oil floats on the surface of the solution; (2) Remove the solution floating on the surface to obtain solid soil; (3) The solid soil is washed with deionized water, and the washed soil is placed in a cool place indoors to dry to obtain the washed soil.
[0029] 100 portions of soil 1 and soil 2 were taken, eluted using the method of this embodiment, and the cleaned soils were tested by weight method. The elution rate of soil 1 was 96.3-97.5%; the elution rate of soil 2 was 94.3-95.9%. Example 3
[0030] A method for preparing a petroleum cleaning agent suitable for soils of different textures comprises the following steps: adding 17 parts by weight of sodium dodecyl sulfate, 2 parts by weight of octylphenyl polyoxyethylene ether and 5 parts by weight of sodium tridecanoate to 100 parts by weight of water, and stirring the mixture to obtain a cleaning agent for standby use.
[0031] The cleaning method using the above petroleum cleaning agent comprises the following steps: (1) Place the soil to be cleaned and the prepared cleaning agent in an oscillator, with the weight ratio of the soil to be cleaned to the prepared cleaning agent being 1:11, and repeatedly shake in the oscillator for elution. The cleaning time is 90 minutes, the cleaning intensity is 170 rpm, the temperature is 65°C, and the mixture is fully mixed. Let it stand until the crude oil floats on the surface of the solution; (2) Remove the solution floating on the surface to obtain solid soil; (3) The solid soil is washed with deionized water, and the washed soil is placed in a cool place indoors to dry to obtain the washed soil.
[0032] 100 portions of soil 1 and soil 2 were taken, eluted using the method of this embodiment, and the cleaned soils were tested by weight method. The elution rate of soil 1 was 96.9-99.1%; the elution rate of soil 2 was 95.2-97.4%. Example 4
[0033] A method for preparing a petroleum cleaning agent suitable for soils of different textures comprises the following steps: adding 15.5 parts by weight of sodium dodecyl sulfate, 2 parts by weight of octylphenyl polyoxyethylene ether and 5 parts by weight of sodium tridecanoate to 100 parts by weight of water, and stirring the mixture to obtain a cleaning agent for standby use.
[0034] The cleaning method using the above petroleum cleaning agent comprises the following steps: (1) Place the soil to be cleaned and the prepared cleaning agent in an oscillator, with the weight ratio of the soil to be cleaned to the prepared cleaning agent being 1:10.5, and repeatedly shake in the oscillator for elution. The cleaning time is 85 min, the cleaning intensity is 165 rpm, the temperature is 62°C, and the mixture is fully mixed. Let it stand until the crude oil floats on the surface of the solution; (2) Remove the solution floating on the surface to obtain solid soil; (3) The solid soil is washed with deionized water, and the washed soil is placed in a cool place indoors to dry to obtain the washed soil.
[0035] 100 portions of soil 1 and soil 2 were taken, eluted using the method of this embodiment, and the cleaned soils were tested by weight method. The elution rate of soil 1 was 94.1-97.2%; the elution rate of soil 2 was 93.3-95.8%. Example 5
[0036] A method for preparing a petroleum cleaning agent suitable for soils of different textures comprises the following steps: adding 20 parts by weight of sodium dodecyl sulfate, 2 parts by weight of octylphenyl polyoxyethylene ether and 5 parts by weight of sodium tridecanoate to 100 parts by weight of water, and stirring the mixture to obtain a cleaning agent for standby use.
[0037] The cleaning method using the above petroleum cleaning agent comprises the following steps: (1) Place the soil to be cleaned and the prepared cleaning agent in an oscillator, with the weight ratio of the soil to be cleaned to the prepared cleaning agent being 1:11.5, and repeatedly shake in the oscillator for elution. The cleaning time is 95 min, the cleaning intensity is 175 rpm, the temperature is 58°C, and the mixture is fully mixed and allowed to stand until the crude oil floats on the surface of the solution; (2) Remove the solution floating on the surface to obtain solid soil; (3) The solid soil is washed with deionized water, and the washed soil is placed in a cool place indoors to dry to obtain the washed soil.
[0038] 100 portions of soil 1 and soil 2 were taken, eluted using the method of this embodiment, and the cleaned soils were tested by weight method. The elution rate of soil 1 was 95.7-98.9%; the elution rate of soil 2 was 94.2-96.9%. Example 6
[0039] A method for preparing a petroleum cleaning agent suitable for soils of different textures comprises the following steps: adding 10 parts by weight of sodium dodecyl sulfate, 3 parts by weight of octylphenyl polyoxyethylene ether and 5 parts by weight of sodium tridecanoate to 100 parts by weight of water, and stirring the mixture to obtain a cleaning agent for standby use.
[0040] The cleaning method using the above petroleum cleaning agent comprises the following steps: (1) Place the soil to be cleaned and the prepared cleaning agent in an oscillator, with the weight ratio of the soil to be cleaned to the prepared cleaning agent being 1:11.5, and repeatedly shake in the oscillator for elution. The cleaning time is 95 min, the cleaning intensity is 175 rpm, the temperature is 58°C, and the mixture is fully mixed and allowed to stand until the crude oil floats on the surface of the solution; (2) Remove the solution floating on the surface to obtain solid soil; (3) The solid soil is washed with deionized water, and the washed soil is placed in a cool place indoors to dry to obtain the washed soil.
[0041] 100 portions of Soil 3 were taken and eluted using the method of this embodiment. The cleaned soil was tested using a gravimetric method. The elution rate of Soil 3 was found to be 97.2-98.1%. Example 7
[0042] A method for preparing a petroleum cleaning agent suitable for soils of different textures comprises the following steps: adding 10 parts by weight of sodium dodecyl sulfate, 4 parts by weight of octylphenyl polyoxyethylene ether and 5 parts by weight of sodium tridecanoate to 100 parts by weight of water, and stirring the mixture to obtain a cleaning agent for standby use.
[0043] The cleaning method using the above petroleum cleaning agent comprises the following steps: (1) Place the soil to be cleaned and the prepared cleaning agent in an oscillator, with the weight ratio of the soil to be cleaned to the prepared cleaning agent being 1:10.5, and repeatedly shake in the oscillator for elution. The cleaning time is 85 min, the cleaning intensity is 165 rpm, the temperature is 62°C, and the mixture is fully mixed. Let it stand until the crude oil floats on the surface of the solution; (2) Remove the solution floating on the surface to obtain solid soil; (3) The solid soil is washed with deionized water, and the washed soil is placed in a cool place indoors to dry to obtain the washed soil.
[0044] 100 portions of Soil 3 were taken and eluted using the method of this embodiment. The cleaned soil was tested using a gravimetric method. The elution rate of Soil 3 was found to be 98.7-99.2%. Example 8
[0045] A method for preparing a petroleum cleaning agent suitable for soils of different textures comprises the following steps: adding 10 parts by weight of sodium dodecyl sulfate, 3.5 parts by weight of octylphenyl polyoxyethylene ether and 5 parts by weight of sodium tridecanoate to 100 parts by weight of water, and stirring the mixture to obtain a cleaning agent for standby use.
[0046] The cleaning method using the above petroleum cleaning agent comprises the following steps: (1) Place the soil to be cleaned and the prepared cleaning agent in an oscillator, with the weight ratio of the soil to be cleaned to the prepared cleaning agent being 1:11, and repeatedly shake in the oscillator for elution. The cleaning time is 90 minutes, the cleaning intensity is 170 rpm, the temperature is 65°C, and the mixture is fully mixed. Let it stand until the crude oil floats on the surface of the solution; (2) Remove the solution floating on the surface to obtain solid soil; (3) The solid soil is washed with deionized water, and the washed soil is placed in a cool place indoors to dry to obtain the washed soil.
[0047] 100 portions of Soil 3 were taken and eluted using the method of this embodiment. The cleaned soil was tested using a gravimetric method. The elution rate of Soil 3 was found to be 98.7-99.3%. Example 9
[0048] A method for preparing a petroleum cleaning agent suitable for soils of different textures comprises the following steps: adding 10 parts by weight of sodium dodecyl sulfate, 3.2 parts by weight of octylphenyl polyoxyethylene ether and 5 parts by weight of sodium tridecanoate to 100 parts by weight of water, stirring the mixture evenly to obtain a cleaning agent for standby use.
[0049] The cleaning method using the above petroleum cleaning agent comprises the following steps: (1) Place the soil to be cleaned and the prepared cleaning agent in an oscillator, with the weight ratio of the soil to be cleaned to the prepared cleaning agent being 1:12, and repeatedly shake in the oscillator for elution. The cleaning time is 80 min, the cleaning intensity is 180 rpm, the temperature is 60°C, and the mixture is fully mixed. Let it stand until the crude oil floats on the surface of the solution; (2) Remove the solution floating on the surface to obtain solid soil; (3) The solid soil is washed with deionized water, and the washed soil is placed in a cool place indoors to dry to obtain the washed soil.
[0050] 100 portions of Soil 3 were taken and eluted using the method of this embodiment. The cleaned soil was tested using a gravimetric method. The elution rate of Soil 3 was found to be 98.4-98.9%. Example 10
[0051] A method for preparing a petroleum cleaning agent suitable for soils of different textures comprises the following steps: adding 10 parts by weight of sodium dodecyl sulfate, 3.7 parts by weight of octylphenyl polyoxyethylene ether and 5 parts by weight of sodium tridecanoate to 100 parts by weight of water, stirring the mixture to obtain a cleaning agent for standby use.
[0052] The cleaning method using the above petroleum cleaning agent comprises the following steps: (1) Place the soil to be cleaned and the prepared cleaning agent in an oscillator, with the weight ratio of the soil to be cleaned to the prepared cleaning agent being 1:10, and repeatedly shake in the oscillator for elution. The cleaning time is 100 min, the cleaning intensity is 160 rpm, the temperature is 65°C, and the mixture is fully mixed. Let it stand until the crude oil floats on the surface of the solution; (2) Remove the solution floating on the surface to obtain solid soil; (3) The solid soil is washed with deionized water, and the washed soil is placed in a cool place indoors to dry to obtain the washed soil.
[0053] 100 portions of Soil 3 were taken and eluted using the method of this embodiment. The cleaned soil was tested using a gravimetric method. The elution rate of Soil 3 was found to be 97.9-98.5%.
[0054] Comparative Example 1
[0055] The preparation method of the petroleum cleaning agent is as follows: 20 parts by weight of sodium dodecyl sulfate and 2 parts by weight of octylphenyl polyoxyethylene ether are added to 100 parts by weight of water, and the cleaning agent is prepared and set aside. 100 parts of soil 1 and soil 2 are taken, and the cleaning agent prepared by the method of this embodiment and the elution method of embodiment 1 are used to clean the soil. The cleaned soil is tested by the weight method, and the elution rate of soil 1 is 57.6-59.2%; the elution rate of soil 2 is 55.3-56.5%.
[0056] Comparative Example 2
[0057] The preparation method of the petroleum cleaning agent is as follows: 15 parts by weight of sodium dodecyl sulfate and 2 parts by weight of octylphenyl polyoxyethylene ether are added to 100 parts by weight of water, and the cleaning agent is prepared and set aside. 100 parts of soil 1 and soil 2 are taken, and the cleaning agent prepared by the method of this embodiment and the elution method of embodiment 2 are used to clean the soil. The cleaned soil is tested by the weight method, and the elution rate of soil 1 is 54.1-56.7%; the elution rate of soil 2 is 53.2-53.9%.
[0058] Comparative Example 3
[0059] The preparation method of the petroleum cleaning agent is as follows: 10 parts by weight of sodium dodecyl sulfate and 3 parts by weight of octylphenyl polyoxyethylene ether are added to 100 parts by weight of water, and the cleaning agent is prepared and set aside. 100 parts of soil 3 are taken, and the cleaning agent prepared by the method of this embodiment is used, and the soil is cleaned by the elution method of embodiment 6. The cleaned soil is tested by the weight method, and the elution rate of soil 3 is measured to be 52.9-53.8%.
[0060] Comparative Example 4
[0061] The preparation method of the petroleum cleaning agent is as follows: 10 parts by weight of sodium dodecyl sulfate and 4 parts by weight of octylphenyl polyoxyethylene ether are added to 100 parts by weight of water, and the cleaning agent is prepared and set aside. 100 parts of soil 3 are taken, and the cleaning agent prepared by the method of this embodiment is used, and the soil is cleaned by the elution method of embodiment 7. The cleaned soil is tested by the weight method, and the elution rate of soil 3 is measured to be 51.4-52.6%.
[0062] Comparative Example 5 The preparation method of the petroleum cleaning agent is as follows: 12 parts by weight of sodium dodecyl sulfate, 3 parts by weight of octylphenyl polyoxyethylene ether, and 5 parts by weight of sodium tridecanoate are added to 100 parts by weight of water, and the cleaning agent is prepared and set aside. 100 parts of soil 1 and soil 2 are taken, and the cleaning agent prepared by the method of this embodiment is used, and the soil is cleaned by the elution method of embodiment 4. The cleaned soil is tested by the weight method, and the elution rate of soil 1 is 69.5-73.7%, and the elution rate of soil 2 is 68.2-72.8%.
[0063] Comparative Example 6
[0064] The preparation method of the petroleum cleaning agent is as follows: 25 parts by weight of sodium dodecyl sulfate, 2 parts by weight of octylphenyl polyoxyethylene ether, and 4 parts of sodium tridecanoate are added to 100 parts by weight of water, and the cleaning agent is prepared and set aside. 100 parts of soil 1 and soil 2 are taken, and the cleaning agent prepared by the method of this embodiment is used, and the soil is cleaned by the elution method of embodiment 5. The cleaned soil is tested by the weight method, and the elution rate of soil 1 is 72.2-75.6%; the elution rate of soil 2 is 70.2-75.5%.
[0065] Comparative Example 7
[0066] The preparation method of the petroleum cleaning agent is as follows: 8 parts by weight of sodium dodecyl sulfate, 5 parts by weight of octylphenyl polyoxyethylene ether, and 4 parts of sodium tridecanoate are added to 100 parts by weight of water, and the cleaning agent is prepared and set aside. 100 parts of soil 3 are taken, and the cleaning agent prepared by the method of this embodiment is used, and the soil is cleaned by the elution method of embodiment 5. The cleaned soil is tested by the weight method, and the elution rate of soil 3 is measured to be 71.3-75.4%.
[0067] Comparative Example 8
[0068] The preparation method of the petroleum cleaning agent is as follows: 12 parts by weight of sodium dodecyl sulfate, 2 parts by weight of octylphenyl polyoxyethylene ether, and 6 parts by weight of sodium tridecanoate are added to 100 parts by weight of water, and the cleaning agent is prepared and set aside. 100 parts of soil 3 are taken, and the cleaning agent prepared by the method of this embodiment is used, and the soil is cleaned by the elution method of embodiment 5. The cleaned soil is tested by the weight method, and the elution rate of soil 3 is measured to be 68.1-72.5%.
[0069] It can be seen from the elution results of Examples 1-10 of the present invention and Comparative Examples 1-4 that the addition of sodium tridecanoate greatly improves the elution rate of petroleum hydrocarbons in the contaminated soil. It may be that the sodium ions introduced by the addition of sodium tridecanoate to the contaminated soil cause the surfactant to transform into a highly aggregated state. In addition, the oxidation of sodium tridecanoate destroys the cementing material of the soil, which is conducive to destroying the soil structure, achieving the effect of dispersing the soil, and improving the cleaning effect of petroleum hydrocarbons in the contaminated soil.
[0070] It can be seen from the elution results of Examples 1-10 of the present invention and Comparative Examples 5-8 that the elution effects are different when the dosages of the components are different. Only when the dosage range of the raw materials of the present invention is met, the components produce a synergistic effect and the elution effect is optimal.
[0071] The above examples also demonstrate the application of octylphenyl polyoxyethylene ether in the preparation of petroleum cleaning agents suitable for soils of different textures, and the application of petroleum cleaning agents in petroleum cleaning in soils of different textures.
[0072] The above analysis shows that in the scheme of the present application, the cleaning agent composed of sodium dodecyl sulfate (SDS), octylphenyl polyoxyethylene ether (TX-100) and sodium tridecanoate has a targeted and enhanced elution effect on the petroleum elution in soils of different textures, thereby achieving a highly efficient elution effect.
Claims
1. A petroleum cleaning agent suitable for soils of different textures, characterized in that The invention is prepared from the following raw materials: sodium dodecyl sulfate, octylphenyl polyoxyethylene ether, sodium tridecanoate and water.
2. A petroleum cleaning agent suitable for soils of different textures according to claim 1, characterized in that The invention is prepared from the following raw materials according to the weight proportions: 15-20 parts of sodium dodecyl sulfate, 2 parts of octylphenyl polyoxyethylene ether, 5 parts of sodium tridecanoate and 100 parts of water.
3. The petroleum cleaning agent suitable for soils of different textures according to claim 1, characterized in that The invention is prepared from the following raw materials according to the above weight proportions: 10 parts of sodium dodecyl sulfate, 3-4 parts of octylphenyl polyoxyethylene ether, 5 parts of sodium tridecanoate and 100 parts of water.
4. A cleaning method for a petroleum cleaning agent suitable for soils of different textures according to any one of claims 1 to 3, characterized in that The steps include: (1) Place the soil to be cleaned and the cleaning agent in an oscillator and shake repeatedly in the oscillator for elution. The cleaning time is 80-100 minutes, the cleaning intensity is 160-180 rpm, the temperature is 55-65°C, and the mixture is fully mixed and allowed to stand until the crude oil floats on the surface of the solution. (2) Remove the solution floating on the surface to obtain solid soil; (3) The solid soil is washed with deionized water, and the washed soil is placed in a cool place indoors to dry to obtain the washed soil.
5. A cleaning method for a petroleum cleaning agent suitable for soils of different textures according to claim 6, characterized in that In step (1), the weight ratio of the soil to be cleaned to the cleaning agent is 1:10-12.
6. A cleaning method for a petroleum cleaning agent suitable for soils of different textures according to claim 6, characterized in that In step (3), the weight ratio of the soil to be cleaned to deionized water is 1:8-10.
7. A cleaning method for a petroleum cleaning agent suitable for soils of different textures according to claim 6, characterized in that The cleaning agent described in step (1) is prepared from the following raw materials in the aforementioned weight proportions: for cleaning loam, 15-20 parts of sodium dodecyl sulfate, 2 parts of octylphenyl polyoxyethylene ether, 5 parts of sodium tridecanoate, and 100 parts of water.
8. A cleaning method for a petroleum cleaning agent suitable for soils of different textures according to claim 6, characterized in that The cleaning agent described in step (1) is prepared from the following raw materials in the aforementioned weight proportions: when cleaning clay, 10 parts of sodium dodecyl sulfate, 3-4 parts of octylphenyl polyoxyethylene ether, 5 parts of sodium tridecanoate, and 100 parts of water.
9. Use of the octylphenyl polyoxyethylene ether according to any one of claims 1 to 3 in the preparation of a petroleum cleaning agent suitable for soils of different textures.
10. Use of the petroleum cleaning agent according to any one of claims 1 to 3 in cleaning petroleum in soils of different textures.