CN114956491A - Chemical cleaning agent and preparation method and application thereof - Google Patents
Chemical cleaning agent and preparation method and application thereof Download PDFInfo
- Publication number
- CN114956491A CN114956491A CN202210523608.7A CN202210523608A CN114956491A CN 114956491 A CN114956491 A CN 114956491A CN 202210523608 A CN202210523608 A CN 202210523608A CN 114956491 A CN114956491 A CN 114956491A
- Authority
- CN
- China
- Prior art keywords
- cleaning agent
- oil
- petroleum
- chemical cleaning
- sludge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012459 cleaning agent Substances 0.000 title claims abstract description 143
- 239000000126 substance Substances 0.000 title claims abstract description 79
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000010802 sludge Substances 0.000 claims abstract description 87
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 78
- 239000002689 soil Substances 0.000 claims abstract description 56
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 36
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims abstract description 24
- ONJQDTZCDSESIW-UHFFFAOYSA-N polidocanol Chemical compound CCCCCCCCCCCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO ONJQDTZCDSESIW-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000344 soap Substances 0.000 claims abstract description 21
- -1 TX-10 Chemical compound 0.000 claims abstract description 18
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 18
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims abstract description 12
- 235000017557 sodium bicarbonate Nutrition 0.000 claims abstract description 12
- 239000002253 acid Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 229910001868 water Inorganic materials 0.000 claims description 23
- 238000002156 mixing Methods 0.000 claims description 7
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000003208 petroleum Substances 0.000 abstract description 19
- 239000003921 oil Substances 0.000 description 104
- 238000004140 cleaning Methods 0.000 description 50
- 239000002245 particle Substances 0.000 description 20
- 230000000694 effects Effects 0.000 description 14
- 229960004418 trolamine Drugs 0.000 description 13
- 230000009471 action Effects 0.000 description 6
- 238000004945 emulsification Methods 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 239000004094 surface-active agent Substances 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 4
- 159000000011 group IA salts Chemical class 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229940051841 polyoxyethylene ether Drugs 0.000 description 4
- 229920000056 polyoxyethylene ether Polymers 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000010865 sewage Substances 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- ICLYJLBTOGPLMC-KVVVOXFISA-N (z)-octadec-9-enoate;tris(2-hydroxyethyl)azanium Chemical compound OCCN(CCO)CCO.CCCCCCCC\C=C/CCCCCCCC(O)=O ICLYJLBTOGPLMC-KVVVOXFISA-N 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910017053 inorganic salt Inorganic materials 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229940117013 triethanolamine oleate Drugs 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000001804 emulsifying effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011066 ex-situ storage Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 238000013048 microbiological method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/04—Surfactants, used as part of a formulation or alone
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
Abstract
The invention discloses a chemical cleaning agent and a preparation method and application thereof, wherein the chemical cleaning agent comprises a first cleaning agent and a second cleaning agent, the first cleaning agent comprises sodium carbonate, sodium bicarbonate and sodium hydroxide, and the second cleaning agent comprises OP-10, NP-10, TX-10, triethanolamine oil soap acid and AEO-9. Therefore, the chemical cleaning agent can reduce the absolute dry oil content of the oil-containing sludge and/or petroleum polluted soil to be lower than 2 wt%, and saves the cost.
Description
Technical Field
The invention belongs to the technical field of environmental protection, and particularly relates to a chemical cleaning agent, and a preparation method and application thereof.
Background
With the annual increase of the exploitation amount of domestic oil fields, soil polluted by crude oil and oily sludge generated in the oil extraction production process are inevitably generated in the oil extraction process. According to statistics, about 600 million tons of oily sludge and petroleum-polluted soil are generated every year in China, the oily sludge and the petroleum-polluted soil are piled up for a long time, pollution is caused to water bodies, crops and atmosphere, meanwhile, due to volatilization of light components of crude oil, safety risk of explosion exists, and in addition, the oily sludge and the petroleum-polluted soil which are not treated for a long time can be ingested by human bodies through the water bodies, the crops and the like, and the human health is harmed. Therefore, the treatment of oil-containing sludge and petroleum-contaminated soil is imminent.
The existing treatment technology aiming at the oil-containing sludge and petroleum polluted soil can be divided into in-situ treatment and ex-situ treatment from the construction mode. The in-situ treatment is a method for treating the position where the oil-containing sludge and the petroleum-polluted soil are generated without transferring the position of the oil-containing sludge and the petroleum-polluted soil; ex situ treatment is a method of transferring oil-containing sludge and petroleum contaminated soil from a production site to a centralized treatment facility for centralized disposal. The treatment methods of oily sludge and petroleum-contaminated soil are classified into a microbiological method, a thermal method, a chemical method, and the like. The microorganism method is to decompose oil in oil-containing sludge and petroleum-polluted soil by using petroleum degrading bacteria so as to achieve the aim of removing the oil, has the advantages of low treatment cost and environmental protection, and has the defects that the microorganism needs to be domesticated and cultured for a long time, air needs to be introduced and nutrient substances need to be added in the treatment process, the dependence degree on the environmental temperature is high, and the operation difficulty and the limitation of the biological method are high. The thermal method is a method for separating oil in the oil-containing sludge and the petroleum-polluted soil in a gas form by heating the oil-containing sludge and the petroleum-polluted soil (the heating temperature is generally 400-650 ℃), and can be divided into a pyrolysis method and a thermal desorption method according to different heating temperatures 2 And harmful gases such as NOx. The chemical method is a method for adding a chemical cleaning agent into oil-containing sludge and petroleum polluted soil in a water phase state and removing oil substances through the oil displacement characteristic of the cleaning agent, and has the advantages of low investment and operation cost, good cleaning effect, short cleaning time, easiness in operation and management and the like, and is widely applied; because of the different crude oil components, soil types and grain sizes of the oil-containing sludge and/or petroleum polluted soil in different regions, the oil-containing sludge and/or petroleum polluted soil are converted into chemical soilChemical cleaning agents have raised higher requirements, and the chemical cleaning agents also become the bottleneck problem of the chemical cleaning technology.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention aims to provide a chemical cleaning agent, a preparation method and application thereof, which can reduce the absolute dry oil content of oil-containing sludge and/or petroleum-polluted soil to be less than 2 wt% and save the cost.
In one aspect of the invention, a chemical cleaning agent is provided. According to an embodiment of the present invention, the chemical cleaning agent comprises a first cleaning agent comprising sodium carbonate, sodium bicarbonate and sodium hydroxide and a second cleaning agent comprising OP-10, NP-10, TX-10, triethanolamine oil soap and AEO-9.
The chemical cleaning agent comprises a first cleaning agent and a second cleaning agent, wherein the first cleaning agent comprises sodium carbonate, sodium bicarbonate and sodium hydroxide, and under the emulsification action of the first chemical cleaning agent, oil can be separated from oily sludge and/or petroleum polluted soil particles with the particle size of more than 75 micrometers (low specific surface area); the second cleaning agent comprises OP-10, NP-10, TX-10, triethanolamine oil soap acid and AEO-9, and under the action of the second chemical cleaning agent, oil in gaps on the surfaces of oily sludge and/or petroleum-polluted soil particles with the particle size of less than 75 micrometers (high specific surface area) can be thoroughly cleaned. Therefore, compared with the chemical cleaning agent in the prior art, the chemical cleaning agent is lower in cost, the inorganic alkaline salt is adopted firstly, and then the polyoxyethylene ether type surfactant is adopted to clean the oily sludge and/or the petroleum polluted soil, the oil on the surface of the oily sludge and/or the petroleum polluted soil particles with low specific surface area and high specific surface area can be cleaned in sequence, the absolute dry oil content of the oily sludge and/or the petroleum polluted soil after being cleaned twice is less than 2 wt%, and the treatment effect is higher and stable.
In addition, the chemical cleaning agent according to the above embodiment of the present invention may further have the following additional technical features:
in some embodiments of the invention, the mass ratio of the sodium carbonate, the sodium bicarbonate and the sodium hydroxide is (0.8-3.2): (0-1.2): (0.5 to 3.5).
In some embodiments of the present invention, the concentration of the first cleaning agent is 30 to 50 wt%.
In some embodiments of the invention, the mass ratio of OP-10, NP-10, TX-10, triethanolamine oil soap and AEO-9 is (0.8-1.3): (0-1.7): (0-1.2): (0.2-1.6): (0.9-1.8).
In some embodiments of the present invention, the concentration of the second cleaning agent is 3 to 20 wt%.
In a second aspect of the invention, a method of making the above chemical cleaner is provided. According to an embodiment of the invention, the method comprises:
(1) mixing sodium carbonate, sodium bicarbonate, sodium hydroxide and water to obtain a first cleaning agent;
(2) OP-10, NP-10, TX-10, triethanolamine oil soap, AEO-9 and water were mixed to obtain a second cleanser.
According to the method for preparing the chemical cleaning agent, firstly, sodium carbonate, sodium bicarbonate, sodium hydroxide and water are mixed to obtain a first cleaning agent, and under the emulsification effect of the first chemical cleaning agent, oil can be separated from oil-containing sludge and/or petroleum-polluted soil particles with the particle size of more than 75 micrometers (low specific surface area); and then OP-10, NP-10, TX-10, triethanolamine oil soap acid, AEO-9 and water are mixed to obtain a second cleaning agent, and under the action of the second chemical cleaning agent, the oil-containing sludge with the particle size of less than 75 micrometers (with high specific surface area) and/or oil in gaps on the surfaces of petroleum-polluted soil particles can be thoroughly cleaned. Compared with the chemical cleaning agent in the prior art, the chemical cleaning agent prepared by the method is lower in cost, the inorganic alkaline salt is adopted firstly, and then the polyoxyethylene ether type surfactant is adopted to clean the oily sludge and/or the petroleum-polluted soil, so that the oily sludge and/or the petroleum-polluted soil particle surface oil with low specific surface area and high specific surface area can be cleaned in sequence, the absolute dry oil content of the oily sludge and/or the petroleum-polluted soil after being cleaned twice is less than 2 wt%, and the treatment effect is higher and stable.
In addition, the method for preparing the chemical cleaning agent according to the above embodiment of the present invention may further have the following additional technical features:
in some embodiments of the present invention, in the step (1), the concentration of the first cleaning agent is 30 to 50 wt%.
In some embodiments of the invention, in the step (1), the mass ratio of the sodium carbonate, the sodium bicarbonate and the sodium hydroxide is (0-3.2) to (0-1.2): (0.5 to 3.5).
In some embodiments of the present invention, in the step (2), the concentration of the second cleaning agent is 3 to 20 wt%.
In some embodiments of the present invention, in step (2), the mass ratio of the OP-10, the NP-10, the TX-10, the triethanolamine oleyl soap and the AEO-9 is (0.8-1.3): (0-1.7): (0-1.2): (0-1.6): (0.9-1.8).
In a third aspect of the invention, the invention provides the application of the chemical cleaning agent in the treatment of oil-containing sludge and/or petroleum-polluted soil. Thus, the chemical cleaning agent can reduce the absolute dry oil content of the oil-containing sludge and/or petroleum polluted soil to be less than 2 wt%.
In addition, the method for preparing the chemical cleaning agent according to the above embodiment of the present invention may further have the following additional technical features:
in some embodiments of the invention, the mass ratio of the oily sludge and/or petroleum-contaminated soil to the first cleaning agent to the second cleaning agent is 1: (0.02-0.05): (0.03-0.1).
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a process flow diagram of a method of preparing a chemical cleaner according to one embodiment of the present invention;
FIG. 2 is a graph showing the effect of oil content of absolute sludge after chemical cleaning of oily sludge at the bottom of a large tank of Liaohe oilfield sewage plant according to Experimental example 1;
FIG. 3 is a graph showing the effect of oil content in absolute dry sludge after chemical cleaning of oily sludge at the bottom of a large tank of a middle-sea oil sewage plant according to Experimental example 2.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, and the embodiments described below with reference to the accompanying drawings are exemplary and intended to be illustrative of the present invention and should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In one aspect of the invention, a chemical cleaning agent is provided. According to an embodiment of the present invention, the chemical cleaning agent comprises a first cleaning agent comprising sodium carbonate, sodium bicarbonate and sodium hydroxide and a second cleaning agent comprising OP-10, NP-10, TX-10, triethanolamine oil soap and AEO-9.
The chemical cleaning agent comprises a first cleaning agent and a second cleaning agent, wherein the first cleaning agent comprises sodium carbonate, sodium bicarbonate and sodium hydroxide, and under the emulsification action of the first chemical cleaning agent, oil can be separated from oily sludge and/or petroleum polluted soil particles with the particle size of more than 75 micrometers (low specific surface area); the second cleaning agent comprises OP-10, NP-10, TX-10, triethanolamine oil soap acid and AEO-9, and under the action of the second chemical cleaning agent, oil in gaps on the surfaces of oily sludge and/or petroleum-polluted soil particles with the particle size of less than 75 micrometers (high specific surface area) can be thoroughly cleaned. Therefore, compared with the chemical cleaning agent in the prior art, the chemical cleaning agent is lower in cost, the inorganic alkaline salt is adopted firstly, and then the polyoxyethylene ether type surfactant is adopted to clean the oily sludge and/or the petroleum polluted soil, the oil on the surface of the oily sludge and/or the petroleum polluted soil particles with low specific surface area and high specific surface area can be cleaned in sequence, the absolute dry oil content of the oily sludge and/or the petroleum polluted soil after being cleaned twice is less than 2 wt%, and the treatment effect is higher and stable.
Furthermore, the concentration of the first cleaning agent is 30-50 wt%, and the concentration of the second cleaning agent is 3-20 wt%. The inventor finds that the high concentration of the first cleaning agent can cause the precipitated oil to be dissolved in the cleaning solution again, which is not beneficial to the recovery of the oil, and in addition, the high concentration of the first cleaning agent can generate more alkali steam, which has great influence on the environment; the concentration of the first cleaning agent is too low, the cleaning efficiency of the first cleaning agent on oil-containing sludge and/or oil-polluted soil is low, and the technical index requirement that the absolute dry oil content is less than 2 wt% cannot be met. The charge in the cleaning solution is reversed due to the over-high concentration of the second cleaning agent, so that the aim of cleaning the oil-containing sludge and/or petroleum-polluted soil cannot be fulfilled; if the concentration of the second cleaning agent is too low, the degree of emulsification is weak, and therefore the cleaning efficiency of the oil is reduced.
Furthermore, the mass ratio of the sodium carbonate to the sodium bicarbonate to the sodium hydroxide in the first cleaning agent is (0-3.2) to (0-1.2): (0.5-3.5). The inventor finds that the concentration of each component is too high, and different alkaline ions cannot synergistically remove oil substances on the surface of oil-containing sludge and/or petroleum-polluted soil; too low a concentration results in low cleaning efficiency due to low alkalinity of the cleaning solution. In the second cleaning agent, the mass ratio of OP-10, NP-10, TX-10, triethanolamine oil soap acid and AEO-9 is (0.8-1.3) to (0-1.7) to (0-1.2): (0-1.6): (0.9-1.8). The inventor finds that the cleaning fluid charges are reversed due to the excessively high concentration of each component, and the cleaning effect on oil-containing sludge and/or oil-polluted soil surface oil substances is avoided; too low a concentration results in a less emulsifying property of the cleaning solution, which reduces the cleaning efficiency.
In a second aspect of the invention, a method of preparing the chemical cleaning agent is provided. According to an embodiment of the invention, with reference to fig. 1, the method comprises:
s100: mixing sodium carbonate, sodium bicarbonate, sodium hydroxide and water
In the step, sodium carbonate, sodium bicarbonate, sodium hydroxide and water are mixed, stirred for 1-3 hours at the rotating speed of 30-60 r/min, inorganic salt is fully dissolved, and then the mixture is kept stand until the temperature of liquid in a reaction container is reduced to 25-30 ℃ so as to avoid volatilization of alkali liquor steam, and therefore the first cleaning agent is obtained. Specifically, the concentration of the first cleaning agent is 30-50 wt%. The inventor finds that the oil separated out can be dissolved in the cleaning liquid again due to the excessively high concentration of the first cleaning agent, so that the oil is not beneficial to be recovered, and in addition, the high concentration of the first cleaning agent can generate more alkali steam, so that the environmental impact is large; too low concentration has low efficiency for cleaning oil on oil-containing sludge and/or petroleum-polluted soil, and can not meet the technical index requirement that the absolute dry oil content is less than 2 wt%.
Further, the mass ratio of the sodium carbonate, the sodium bicarbonate and the sodium hydroxide is (0-3.2) to (0-1.2): (0.5 to 3.5). The inventor finds that the concentration of each component is too high, and different alkaline ions cannot synergistically remove oil substances on the surface of oil-containing sludge and/or petroleum-polluted soil; too low a concentration results in low cleaning efficiency due to low alkalinity of the cleaning solution.
S200: mixing OP-10, NP-10, TX-10, triethanolamine oil soap acid, AEO-9 and water
In the step, OP-10, NP-10, TX-10, triethanolamine oil soap acid, AEO-9 and water are mixed and stirred for 1-3 hours at the rotating speed of 30-60 r/min, so that a second cleaning agent is obtained. Specifically, the concentration of the second cleaning agent is 3-20 wt%. The inventor finds that the charge in the cleaning solution is reversed due to the excessively high concentration of the second cleaning agent, so that the aim of cleaning the oil-containing sludge and/or petroleum-polluted soil cannot be fulfilled; if the concentration of the second cleaning agent is too low, the emulsification degree is weak, and therefore the cleaning efficiency for oils is lowered.
Further, the mass ratio of OP-10, NP-10, TX-10, triethanolamine oil soap acid and AEO-9 is (0.8-1.3): (0-1.7): 0-1.2): (0.2-1.6): (0.9-1.8). The inventor finds that the cleaning fluid charges are reversed due to the excessively high concentration of each component, and the cleaning effect on oil-containing sludge and/or oil-polluted soil surface oil substances is avoided; too low a concentration results in a less emulsifying property of the cleaning solution, which reduces the cleaning efficiency.
According to the method for preparing the chemical cleaning agent, the sodium carbonate, the sodium bicarbonate, the sodium hydroxide and the water are mixed to obtain the first cleaning agent, and under the emulsification effect of the first chemical cleaning agent, the oil can be separated from the oily sludge and/or petroleum polluted soil particles with the particle size of more than 75 micrometers (low specific surface area); and then OP-10, NP-10, TX-10, triethanolamine oil soap acid, AEO-9 and water are mixed to obtain a second cleaning agent, and under the action of the second chemical cleaning agent, the oil-containing sludge with the particle size of less than 75 micrometers (with high specific surface area) and/or oil in gaps on the surfaces of petroleum-polluted soil particles can be thoroughly cleaned. Compared with the chemical cleaning agent in the prior art, the chemical cleaning agent prepared by the method is lower in cost, the inorganic alkaline salt is adopted firstly, and then the polyoxyethylene ether type surfactant is adopted to clean the oily sludge and/or the petroleum-polluted soil, so that the oily sludge and/or the petroleum-polluted soil particle surface oil with low specific surface area and high specific surface area can be cleaned in sequence, the absolute dry oil content of the oily sludge and/or the petroleum-polluted soil after being cleaned twice is less than 2 wt%, and the treatment effect is higher and stable. It should be noted that the features and advantages described above for the chemical cleaning agent are also applicable to the method for preparing the chemical cleaning agent, and are not described herein again.
In a third aspect of the invention, the invention provides the application of the chemical cleaning agent in the treatment of oil-containing sludge and/or petroleum-polluted soil. Thus, the chemical cleaning agent can reduce the absolute dry oil content of the oil-containing sludge and/or petroleum polluted soil to be less than 2 wt%.
Further, the mass ratio of the oily sludge and/or petroleum-polluted soil to the first cleaning agent to the second cleaning agent is 1: (0.02-0.05): (0.03-0.1). The inventor finds that the quality ratio of the oily sludge and/or petroleum polluted soil to the two cleaning agents is too high, an excessively emulsified cleaning solution can be formed, and a large negative effect is generated on the cleaning effect; if the mass ratio is too low, the cleaning effect cannot meet the technical requirement that the absolute dry oil content is less than 2 wt% due to the low concentration of the cleaning agent.
It should be noted that the features and advantages described above for the chemical cleaning agent and the method for preparing the chemical cleaning agent are also applicable to the method for preparing the chemical cleaning agent, and are not described in detail herein.
The invention will now be described with reference to specific examples, which are intended to be illustrative only and not to be limiting in any way.
Example 1
Preparing a first cleaning agent:
mixing Na 2 CO 3 NaOH and water, wherein Na 2 CO 3 And NaOH in a concentration of 40 wt%, Na 2 CO 3 The mass ratio of the NaOH solution to the NaOH solution is 0.8: and 3.2, fully stirring for 1 hour until the inorganic salt is completely dissolved, and completing the preparation of the first cleaning agent when the temperature of the solution in the reaction kettle is reduced to 25-30 ℃.
Preparing a second cleaning agent:
mixing OP-10, triethanolamine oleate soap, AEO-9 and water, wherein the concentration of the OP-10, the triethanolamine oleate soap and the AEO-9 is 20 wt%, and the mass ratio of the OP-10 to the triethanolamine oleate soap to the AEO-9 is 1.0: 1.0: and 1.5, fully stirring for 1 hour at the rotating speed of 30r/min until the organic surfactant is completely dissolved, and finishing the preparation of the second cleaning agent.
Example 2
Preparing a first cleaning agent:
NaHCO is added 3 NaOH and water, wherein NaHCO is 3 And NaOH in a concentration of 30 wt.%, NaHCO 3 The mass ratio of the NaOH solution to the NaOH solution is 1.0: 3.0, fully stirring for 1 hour till the inorganic salt is completely dissolved, and when the temperature of the solution in the reaction kettle is reduced to 25-30 ℃, first cleaningAnd (5) finishing the preparation of the lotion.
Preparing a second cleaning agent:
mixing OP-10, TX-10, AEO-9 and water, wherein the concentration of the OP-10, the TX-10 and the AEO-9 is 15 wt%, and the mass ratio of the OP-10, the TX-10 and the AEO-9 is 0.8: 1.1: and 1.4, fully stirring for 1 hour at the rotating speed of 30r/min until the organic surfactant is completely dissolved, and finishing the preparation of the second cleaning agent.
Experimental example 1
The experiment uses the chemical cleaning simulation industrial application developed by the oil-containing sludge at the bottom of the tank of the Liaohe oilfield sewage plant, and in the simulation application process, the first cleaning agent and the second cleaning agent of the chemical cleaning agent in the embodiment 1 are added in two units. Firstly, feeding oil-containing sludge at the bottom of a large tank with a certain mass into a primary cleaning tank, then adding a first cleaning agent, wherein the feeding amount of the first cleaning agent is 5 wt% of the mass of the oil-containing sludge, starting stirring to fully mix the oil-containing sludge and the first cleaning agent, standing, pumping out bottom sludge slurry, and dehydrating until the water content is not more than 70 wt%, wherein the oil content of the oven-dried oil-containing sludge at the bottom of the large tank before chemical cleaning by the cleaning agent is 20.52 wt%, and the oil content of the oven-dried oil-containing sludge after cleaning is 3.11 wt%. And (3) putting the dewatered sludge of the primary chemical cleaning unit into a secondary chemical cleaning unit, adding a second cleaning agent with the mass of 10 wt% of that of the oily sludge, dewatering the bottom slurry liquid after cleaning until the water content is not more than 70 wt%, and then detecting the oil content of the absolute dry sludge of the cleaned sludge, wherein the oil content of the absolute dry sludge is 1.32 wt% after secondary cleaning. FIG. 2 is a data diagram of oil content of oven-dried sludge after adding a first cleaning agent and a second cleaning agent. As can be seen from the figure, after the first cleaning agent is added into the first-stage chemical cleaning unit, the oil content of the absolute dry sludge is not more than 3.2 wt%, and after the second cleaning agent is added into the second-stage chemical cleaning unit, the oil content of the absolute dry sludge is not more than 1.4 wt%.
Experimental example 2
The experiment uses the chemical cleaning simulation industrial application developed by the oily sludge at the bottom of the large tank of the middle-sea oil sewage plant, and in the simulation application process, the first cleaning agent and the second cleaning agent of the chemical cleaning agent in the embodiment 2 are added in two units. Firstly, feeding oily sludge at the bottom of a large tank with a certain mass into a primary cleaning tank, adding a first cleaning agent, wherein the feeding amount of the first cleaning agent is 4 wt% of the mass of the oily sludge, starting stirring to fully mix the oily sludge and the first cleaning agent, standing, extracting bottom slurry, and dehydrating until the water content is not more than 70 wt%; the oil content of the absolute dry sludge of the oily sludge at the bottom of the tank before chemical cleaning is 15.42 wt%, and the oil content of the absolute dry sludge after cleaning is 2.84 wt%. And (3) putting the dewatered sludge of the primary chemical cleaning unit into a secondary chemical cleaning unit, adding a second cleaning agent with the mass of 7 wt% of that of the oily sludge, dewatering the bottom slurry liquid after cleaning until the water content is not more than 70 wt%, and then detecting the oil content of the absolute dry sludge of the cleaned sludge, wherein the oil content of the absolute dry sludge is 1.18 wt% after secondary cleaning. FIG. 3 is a data diagram of oil content of oven-dried sludge after a first cleaning agent and a second cleaning agent are added. As can be seen from the figure, after the first cleaning agent is added into the first-stage chemical cleaning unit, the oil content of the oven-dried mud is not more than 3.0 wt%, and after the second cleaning agent is added into the second-stage chemical cleaning unit, the oil content of the oven-dried mud is not more than 1.2 wt%.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. The chemical cleaning agent is characterized by comprising a first cleaning agent and a second cleaning agent, wherein the first cleaning agent comprises sodium carbonate, sodium bicarbonate and sodium hydroxide, and the second cleaning agent comprises OP-10, NP-10, TX-10, triethanolamine oil soap acid and AEO-9.
2. The chemical cleaning agent according to claim 1, wherein the mass ratio of the sodium carbonate, the sodium bicarbonate and the sodium hydroxide is (0-3.2) to (0-1.2): (0.5 to 3.5);
optionally, the concentration of the first cleaning agent is 30-50 wt%.
3. The chemical cleaning agent according to claim 2, wherein the mass ratio of OP-10, NP-10, TX-10, triethanolamine oil soap and AEO-9 is (0.8-1.3): (0-1.7): (0-1.2): (0-1.6): (0.9 to 1.8);
optionally, the concentration of the second cleaning agent is 3-20 wt%.
4. A method for producing the chemical cleaning agent according to any one of claims 1 to 3, comprising:
(1) mixing sodium carbonate, sodium bicarbonate, sodium hydroxide and water to obtain a first cleaning agent;
(2) OP-10, NP-10, TX-10, triethanolamine oil soap, AEO-9 and water were mixed to obtain a second cleanser.
5. The method as claimed in claim 4, wherein the concentration of the first cleaning agent in the step (1) is 30 to 50 wt%.
6. The method according to claim 5, wherein in the step (1), the mass ratio of the sodium carbonate, the sodium bicarbonate and the sodium hydroxide is (0-3.2) to (0-1.2): (0.5 to 3.5).
7. The method as claimed in claim 4 or 5, wherein the concentration of the second cleaning agent in the step (2) is 3 to 20 wt%.
8. The method as claimed in claim 7, wherein in step (2), the mass ratio of the OP-10, the NP-10, the TX-10, the triethanolamine oil soap and the AEO-9 is (0.8-1.3): (0-1.7): (0-1.2): (0-1.6): (0.9-1.8).
9. Use of the chemical cleaning agent as defined in any one of claims 1 to 3 in the treatment of oil-containing sludge and/or petroleum-contaminated soil.
10. The use according to claim 9, wherein the mass ratio of the oily sludge and/or petroleum-contaminated soil to the first cleaning agent to the second cleaning agent is 1: (0.02-0.05): (0.03-0.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210523608.7A CN114956491B (en) | 2022-05-13 | 2022-05-13 | Chemical cleaning agent and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210523608.7A CN114956491B (en) | 2022-05-13 | 2022-05-13 | Chemical cleaning agent and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114956491A true CN114956491A (en) | 2022-08-30 |
| CN114956491B CN114956491B (en) | 2024-01-30 |
Family
ID=82983793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210523608.7A Active CN114956491B (en) | 2022-05-13 | 2022-05-13 | Chemical cleaning agent and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114956491B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343347A (en) * | 2013-06-27 | 2013-10-09 | 陈德辉 | Production method of oil removal agent for stainless steel |
| CN103820800A (en) * | 2014-02-20 | 2014-05-28 | 苏州龙腾万里化工科技有限公司 | Low-temperature degreasing cleaning agent |
| CN107055990A (en) * | 2016-07-20 | 2017-08-18 | 西安华诺环保股份有限公司 | A kind of oily sludge cleaning agent and its preparation method and application |
| CN108059313A (en) * | 2017-12-14 | 2018-05-22 | 西南石油大学 | A kind of greasy filth cleaning agent and its method for handling greasy filth |
| CN108707516A (en) * | 2018-06-06 | 2018-10-26 | 浙江汉蓝环境科技有限公司 | A kind of offshore drilling platform oil-contained drilling cuttings cleaning agent and preparation method thereof |
| CN108911447A (en) * | 2018-08-01 | 2018-11-30 | 珠海亿诚化工科技有限公司 | A kind of polymer-containing oil sludge complex treatment medicament and its application method |
| CN109179929A (en) * | 2018-09-29 | 2019-01-11 | 西南石油大学 | A kind of oily sludge cleaning agent and cleaning method |
| 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 |
| CN111849651A (en) * | 2020-07-15 | 2020-10-30 | 中国海洋大学 | Thermochemical cleaning agent containing polymer oil sludge in oil field and preparation method and application thereof |
| CN112724981A (en) * | 2019-10-28 | 2021-04-30 | 中国石油化工股份有限公司 | Petroleum-polluted soil eluting agent composition and preparation method thereof |
| CN113800654A (en) * | 2021-08-09 | 2021-12-17 | 大连理工大学盘锦产业技术研究院 | Oil removal, water purification, scale inhibition and corrosion inhibition integrated agent and preparation method thereof |
| CN114308140A (en) * | 2021-12-07 | 2022-04-12 | 苏州西热节能环保技术有限公司 | Catalyst regeneration method based on ammonium bisulfate poisoning |
-
2022
- 2022-05-13 CN CN202210523608.7A patent/CN114956491B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343347A (en) * | 2013-06-27 | 2013-10-09 | 陈德辉 | Production method of oil removal agent for stainless steel |
| CN103820800A (en) * | 2014-02-20 | 2014-05-28 | 苏州龙腾万里化工科技有限公司 | Low-temperature degreasing cleaning agent |
| CN107055990A (en) * | 2016-07-20 | 2017-08-18 | 西安华诺环保股份有限公司 | A kind of oily sludge cleaning agent and its preparation method and application |
| CN108059313A (en) * | 2017-12-14 | 2018-05-22 | 西南石油大学 | A kind of greasy filth cleaning agent and its method for handling greasy filth |
| CN108707516A (en) * | 2018-06-06 | 2018-10-26 | 浙江汉蓝环境科技有限公司 | A kind of offshore drilling platform oil-contained drilling cuttings cleaning agent and preparation method thereof |
| CN108911447A (en) * | 2018-08-01 | 2018-11-30 | 珠海亿诚化工科技有限公司 | A kind of polymer-containing oil sludge complex treatment medicament and its application method |
| CN109179929A (en) * | 2018-09-29 | 2019-01-11 | 西南石油大学 | A kind of oily sludge cleaning agent and cleaning method |
| CN112724981A (en) * | 2019-10-28 | 2021-04-30 | 中国石油化工股份有限公司 | Petroleum-polluted soil eluting agent composition and preparation method thereof |
| 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 |
| CN111849651A (en) * | 2020-07-15 | 2020-10-30 | 中国海洋大学 | Thermochemical cleaning agent containing polymer oil sludge in oil field and preparation method and application thereof |
| CN113800654A (en) * | 2021-08-09 | 2021-12-17 | 大连理工大学盘锦产业技术研究院 | Oil removal, water purification, scale inhibition and corrosion inhibition integrated agent and preparation method thereof |
| CN114308140A (en) * | 2021-12-07 | 2022-04-12 | 苏州西热节能环保技术有限公司 | Catalyst regeneration method based on ammonium bisulfate poisoning |
Non-Patent Citations (3)
| Title |
|---|
| 刘晓燕: "含油污泥与热化学洗涤技术的研究", 《中国优秀硕士学位论文全文数据库-工程科技Ⅰ辑》, no. 2018, pages 11 - 15 * |
| 方景礼;: "21世纪电镀添加剂的进展 笫一部分──除油添加剂", 电镀与涂饰, no. 02 * |
| 胡磊;: "工业清洗剂配方设计――表面活性剂的选择", 中国洗涤用品工业, no. 05 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114956491B (en) | 2024-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11180399B2 (en) | Intelligent oil sludge treatment apparatuses and treatment processes | |
| CN107055990A (en) | A kind of oily sludge cleaning agent and its preparation method and application | |
| CN204675983U (en) | Oil sludge and oil base landwaste pyrolysis absorption harmless treatment device | |
| CN103539325B (en) | Process for treating oil-containing sludge and system | |
| CN108585398A (en) | A kind of method and its apparatus system of processing oily sludge | |
| CN108862954B (en) | Method for treating oily waste by adopting switch type mixed solvent system | |
| CN104373065B (en) | A kind of oil-based drill cuttings processing method | |
| CN104310739B (en) | A kind of method promoting polycyclic aromatic hydrocarbons in sludge anaerobic degradation | |
| CN108409077A (en) | Oily sludge materialization coupled processing method | |
| CN110240373A (en) | A kind of cleaning agent and processing method handling polymer-containing oil sludge | |
| CN102432148A (en) | Method for treating oil sludge of tertiary recovery | |
| CN106966558A (en) | A kind of processing method of saponification water and greasy filth | |
| CN107661898B (en) | Device and method for repairing organic contaminated soil by using supercritical multi-fluid | |
| CN108264946A (en) | A kind of harmlessness disposing of waste mineral oil utilizes method | |
| CN102344214A (en) | Physicochemical comprehensive treatment system for dangerous waste liquid | |
| CN114956491A (en) | Chemical cleaning agent and preparation method and application thereof | |
| CN110272174B (en) | Alkaline separating agent and application thereof in treatment of oil sludge | |
| CN106966559A (en) | A kind of oil-sludge treatment dispersant and its preparation method and application | |
| CN111218288B (en) | Washing liquid for treating light oil product polluted silt and recovering oil content and use method thereof | |
| CN113443799B (en) | Catalytic treatment process and system for converting hazardous waste oil-containing silt into solid waste | |
| CN105000782A (en) | Plate-type vaporizing drying system and technology for treating oily sludge | |
| CN205035239U (en) | Board -like processing oiliness sludge drying vaporization system | |
| CN208500707U (en) | A kind of apparatus system handling oily sludge | |
| CN113264650A (en) | Biological method oily sludge treatment process method | |
| CN202201762U (en) | Dangerous waste liquid recycling and comprehensive processing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |