CN114772884A - Chemical repairing agent for low-oil-content oil sludge - Google Patents
Chemical repairing agent for low-oil-content oil sludge Download PDFInfo
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- CN114772884A CN114772884A CN202210533512.9A CN202210533512A CN114772884A CN 114772884 A CN114772884 A CN 114772884A CN 202210533512 A CN202210533512 A CN 202210533512A CN 114772884 A CN114772884 A CN 114772884A
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- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 35
- 239000010802 sludge Substances 0.000 title claims abstract description 35
- 239000000126 substance Substances 0.000 title claims abstract description 33
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 176
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 20
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 20
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 20
- XXJWXESWEXIICW-UHFFFAOYSA-N diethylene glycol monoethyl ether Chemical compound CCOCCOCCO XXJWXESWEXIICW-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000001361 adipic acid Substances 0.000 claims abstract description 18
- 235000011037 adipic acid Nutrition 0.000 claims abstract description 18
- 239000003945 anionic surfactant Substances 0.000 claims abstract description 16
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000292 calcium oxide Substances 0.000 claims abstract description 14
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 12
- 150000001412 amines Chemical class 0.000 claims abstract description 12
- 229920000570 polyether Polymers 0.000 claims abstract description 12
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 8
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 8
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000000243 solution Substances 0.000 claims description 45
- 238000003756 stirring Methods 0.000 claims description 34
- 239000002245 particle Substances 0.000 claims description 25
- 239000011259 mixed solution Substances 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 20
- KXBFLNPZHXDQLV-UHFFFAOYSA-N [cyclohexyl(diisocyanato)methyl]cyclohexane Chemical compound C1CCCCC1C(N=C=O)(N=C=O)C1CCCCC1 KXBFLNPZHXDQLV-UHFFFAOYSA-N 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 9
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical group [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 5
- 238000004821 distillation Methods 0.000 claims description 5
- 238000005067 remediation Methods 0.000 claims description 4
- 238000001291 vacuum drying Methods 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 15
- 239000003344 environmental pollutant Substances 0.000 abstract description 10
- 239000003208 petroleum Substances 0.000 abstract description 10
- 231100000719 pollutant Toxicity 0.000 abstract description 10
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 239000003209 petroleum derivative Substances 0.000 abstract description 6
- -1 and secondly Substances 0.000 abstract description 5
- 238000006460 hydrolysis reaction Methods 0.000 abstract description 3
- 230000005012 migration Effects 0.000 abstract description 3
- 238000013508 migration Methods 0.000 abstract description 3
- 239000000843 powder Substances 0.000 abstract description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 abstract 1
- 229910052938 sodium sulfate Inorganic materials 0.000 abstract 1
- 235000011152 sodium sulphate Nutrition 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 33
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 6
- 238000001035 drying Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- C02F11/004—Sludge detoxification
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Soil Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Materials Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to the technical field of soil repairing agents, and discloses a chemical repairing agent for low-oil-content oil sludge, which comprises the following raw materials in parts by weight: magnesium oxide, calcium oxide, an anionic surfactant, an auxiliary agent, water, diethylene glycol ethyl ether, adipic acid, polyether amine and ethanol. The chemical repairing agent for the low-oil-content oil sludge has the advantages of large specific surface area, strong adsorption capacity and the like through magnesium oxide, can well adsorb petroleum molecules or fix the petroleum molecules in gaps of magnesium oxide powder, and secondly, magnesium oxide and calcium oxide both belong to alkaline oxides, can emit a large amount of heat through reaction with water, can volatilize light components of petroleum hydrocarbon, can further enable the petroleum to undergo hydrolysis reaction under the alkaline environment brought by the reaction, reduces the surface tension of the oil through the components such as diethylene glycol ethyl ether, sodium sulfate and sodium silicate, and improves the migration capacity of petroleum hydrocarbon pollutants, so that the pollutants are promoted to be desorbed from soil, and secondary pollution is not easily caused.
Description
Technical Field
The invention relates to the technical field of soil remediation agents, in particular to a chemical remediation agent for low-oil-content oil sludge.
Background
The soil restoration is a technical measure for restoring the normal function of the polluted soil, the soil is originally a natural accommodation place and a purification treatment place of various wastes, the soil accommodates pollutants and does not indicate that the soil is polluted, and the soil is indicated to be polluted only when the various pollutants accommodated in the soil are excessive and influence and exceed the self-cleaning capacity of the soil, so that the harmful influence is generated on the hygiene and epidemiology. Causes of soil pollution, such as industrial sludge, garbage agriculture, sewage irrigation, pollutant sedimentation in the atmosphere, and the use of heavy metal-containing mineral fertilizers and pesticides in large quantities.
The petroleum sludge is generated in the processes of oil field exploitation, refining, transportation, use, storage and the like, or is a mixture formed by mixing crude oil or product oil, which is caused by old, damaged and corroded facilities, various accidents and improper operation, with water and soil or even other pollutants, and the like, into the ground and other environmental media, and not only occupies a large area of land, but also seriously pollutes surrounding soil, water and balling environment, but also causes secondary pollution by using a surfactant in most of oil sludge chemical repairing agents in the current market, so that the low-oil-content oil sludge chemical repairing agent is provided to solve the problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a low-oil-content oil sludge chemical repairing agent, which has the advantages of environmental friendliness and the like, and solves the problem that secondary pollution is caused by a surfactant used in most oil sludge chemical repairing agents in the current market.
(II) technical scheme
In order to achieve the above-mentioned environmental friendly purpose, the invention provides the following technical scheme: the chemical repairing agent for the low-oil-content oil sludge comprises the following raw materials in parts by weight: 48-52 parts of magnesium oxide, 100-104 parts of calcium oxide, 2-4 parts of anionic surfactant, 6-10 parts of assistant, 1400-1600 parts of water, 1-1.2 parts of diethylene glycol ethyl ether, 0.8-1 part of adipic acid, 1.8-2 parts of dicyclohexyl methane diisocyanate, 0.8-1 part of polyether amine and 60-80 parts of ethanol.
Preferably, the anionic surfactant is sodium lauryl sulfate.
Preferably, the assistant is sodium silicate.
A chemical repairing agent for low oil-containing oil sludge comprises the following steps:
1) separating ethanol into a first component ethanol and a second component ethanol;
2) adding diethylene glycol ethyl ether and adipic acid into a container, stirring and reacting for 1-1.2 hours at the speed of 500-600 revolutions per minute in water bath heating, cooling to room temperature, and adding a first component of ethanol until the ethanol is completely dissolved to obtain a first solution;
3) uniformly mixing dicyclohexylmethane diisocyanate and a second component of ethanol, and gradually adding polyetheramine under the stirring condition to obtain a second solution;
4) mixing the first solution and the second solution, uniformly stirring to obtain a mixed solution, and distilling at 40-60 ℃ to remove ethanol in the mixed solution to obtain particles 1;
5) drying the particles 1 in vacuum for 4-6 hours to obtain particles 2;
6) and (3) dissolving the particles 2, the anionic surfactant and the auxiliary agent in water, adding magnesium oxide and calcium oxide, and stirring and mixing uniformly to obtain the required chemical repairing agent for the low oil-containing oil sludge.
Preferably, in the step 1, the ethanol is divided into a first component ethanol and a second component ethanol, and the weight ratio of the first component ethanol to the second component ethanol is 1: 1.
preferably, in the step 2, the diethylene glycol ethyl ether and the adipic acid are added into a container, stirred and reacted for 1-1.2 hours at 600 revolutions per minute in the water bath heating process, the mixture is cooled to the room temperature, then the first component ethanol is added until the first component ethanol is completely dissolved to obtain a first solution, and the first solution is heated to 140 ℃ in the water bath heating process.
Preferably, the dicyclohexylmethane diisocyanate and the second component ethanol are uniformly mixed in the step 3, and the polyetheramine is gradually added under the stirring condition to obtain the second solution, and the stirring is performed at 300-400 rpm.
Preferably, in the step 4, the first solution and the second solution are mixed and then uniformly stirred to obtain a mixed solution, ethanol in the mixed solution is distilled and removed at 40-60 ℃ to obtain particles 1, and the distillation time is 1-2 hours.
(III) advantageous effects
Compared with the prior art, the invention provides a chemical repairing agent for low-oil-content oil sludge, which has the following beneficial effects:
the chemical repairing agent for the low-oil-content oil sludge has the advantages of large specific surface area, strong adsorption capacity and the like through magnesium oxide, can well adsorb petroleum molecules or fix the petroleum molecules in gaps of magnesium oxide powder, and secondly, magnesium oxide and calcium oxide both belong to alkaline oxides and can release a large amount of heat through reaction with water, so that light components of petroleum hydrocarbon can be volatilized, the petroleum can be further subjected to hydrolysis reaction under the alkaline environment brought by the reaction, the surface tension of the oil is reduced through the arrangement of diethylene glycol ethyl ether, adipic acid, ethanol, dicyclohexylmethane diisocyanate, polyetheramine, sodium dodecyl sulfate and sodium silicate, the migration capacity of petroleum hydrocarbon pollutants is improved, the pollutants are promoted to be desorbed from soil, and secondary pollution is not easily caused.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The first embodiment is as follows: the chemical repairing agent for the low-oil-content oil sludge comprises the following raw materials in parts by weight: 48 parts of magnesium oxide, 100 parts of calcium oxide, 2 parts of anionic surfactant, 6 parts of auxiliary agent, 1400 parts of water, 1 part of diethylene glycol ethyl ether, 0.8 part of adipic acid, 1.8 parts of dicyclohexyl methane diisocyanate, 0.8 part of polyether amine and 60 parts of ethanol.
The anionic surfactant is sodium lauryl sulfate.
The assistant is sodium silicate.
A chemical repairing agent for low oil-containing oil sludge comprises the following steps:
1) separating ethanol into a first component ethanol and a second component ethanol;
2) adding diethylene glycol ethyl ether and adipic acid into a container, stirring and reacting for 1 hour at 500 revolutions per minute in water bath heating, cooling to room temperature, and adding a first component of ethanol until the first component of ethanol is completely dissolved to obtain a first solution;
3) uniformly mixing dicyclohexylmethane diisocyanate and a second component of ethanol, and gradually adding polyether amine under the stirring condition to obtain a second solution;
4) mixing the first solution and the second solution, uniformly stirring to obtain a mixed solution, and distilling at 40 ℃ to remove ethanol in the mixed solution to obtain particles 1;
5) drying the particles 1 in vacuum for 4 hours to obtain particles 2;
6) and (3) dissolving the particles 2, the anionic surfactant and the auxiliary agent in water, adding magnesium oxide and calcium oxide, and stirring and mixing uniformly to obtain the required low oil-containing oil sludge chemical repairing agent.
In the step 1, ethanol is divided into a first component ethanol and a second component ethanol, wherein the weight ratio of the first component ethanol to the second component ethanol is 1: 1.
in the step 2, diethylene glycol ethyl ether and adipic acid are added into a container, stirred and reacted for 1 hour at the speed of 500-600 revolutions per minute in water bath heating, the mixture is cooled to room temperature, then the first component ethanol is added until the first component ethanol is completely dissolved to obtain a first solution, and the first solution is heated to 100 ℃ in water bath.
In the step 3, dicyclohexylmethane diisocyanate and the second component ethanol are uniformly mixed, polyetheramine is gradually added under the stirring condition to obtain a second solution, and the stirring is performed under the stirring condition of 300 revolutions per minute.
And 4, mixing the first solution and the second solution, uniformly stirring to obtain a mixed solution, distilling at 40 ℃ to remove ethanol in the mixed solution to obtain particles 1, wherein the distillation time is 1 hour.
Example two: the chemical repairing agent for the low-oil-content oil sludge comprises the following raw materials in parts by weight: 50 parts of magnesium oxide, 102 parts of calcium oxide, 3 parts of anionic surfactant, 8 parts of assistant, 1500 parts of water, 1.1 parts of diethylene glycol ethyl ether, 0.9 part of adipic acid, 1.9 parts of dicyclohexyl methane diisocyanate, 0.9 part of polyether amine and 70 parts of ethanol.
The anionic surfactant is sodium lauryl sulfate.
The assistant is sodium silicate.
A chemical repairing agent for low oil-containing oil sludge comprises the following steps:
1) separating ethanol into a first component ethanol and a second component ethanol;
2) adding diethylene glycol ethyl ether and adipic acid into a container, stirring and reacting for 1.1 hours at 550 revolutions per minute in water bath heating, cooling to room temperature, and adding a first component of ethanol until the first component of ethanol is completely dissolved to obtain a first solution;
3) uniformly mixing dicyclohexylmethane diisocyanate and a second component of ethanol, and gradually adding polyether amine under the stirring condition to obtain a second solution;
4) mixing the first solution and the second solution, uniformly stirring to obtain a mixed solution, and distilling at 50 ℃ to remove ethanol in the mixed solution to obtain particles 1;
5) drying the particles 1 in vacuum for 5 hours to obtain particles 2;
6) and (3) dissolving the particles 2, the anionic surfactant and the auxiliary agent in water, adding magnesium oxide and calcium oxide, and stirring and mixing uniformly to obtain the required chemical repairing agent for the low oil-containing oil sludge.
In the step 1, ethanol is divided into a first component ethanol and a second component ethanol, wherein the weight ratio of the first component ethanol to the second component ethanol is 1: 1.
in the step 2, diethylene glycol ethyl ether and adipic acid are added into a container, stirred and reacted for 1.1 hours at the speed of 600 revolutions per minute in water bath heating, the mixture is cooled to room temperature and then added with the first component ethanol until the first component ethanol is completely dissolved to obtain a first solution, and the first solution is heated to 120 ℃ in water bath.
Step 3, uniformly mixing dicyclohexylmethane diisocyanate and the second component ethanol, gradually adding polyether amine under the stirring condition to obtain a second solution, and stirring at 350 revolutions per minute.
And 4, mixing the first solution and the second solution, uniformly stirring to obtain a mixed solution, and distilling at 50 ℃ to remove ethanol in the mixed solution to obtain the particles 1, wherein the distillation time is 1.5 hours.
Example three: the chemical repairing agent for the low-oil-content oil sludge comprises the following raw materials in parts by weight: 52 parts of magnesium oxide, 104 parts of calcium oxide, 4 parts of anionic surfactant, 10 parts of assistant, 1600 parts of water, 1.2 parts of diethylene glycol ethyl ether, 1 part of adipic acid, 2 parts of dicyclohexyl methane diisocyanate, 1 part of polyether amine and 80 parts of ethanol.
The anionic surfactant is sodium dodecyl sulfate.
The assistant is sodium silicate.
A chemical repairing agent for low oil-containing oil sludge comprises the following steps:
1) separating the ethanol into a first component ethanol and a second component ethanol;
2) adding diethylene glycol ethyl ether and adipic acid into a container, stirring and reacting for 1.2 hours at 600 revolutions per minute in water bath heating, cooling to room temperature, and adding a first component of ethanol until the first component of ethanol is completely dissolved to obtain a first solution;
3) uniformly mixing dicyclohexylmethane diisocyanate and a second component of ethanol, and gradually adding polyether amine under the stirring condition to obtain a second solution;
4) mixing the first solution and the second solution, uniformly stirring to obtain a mixed solution, and distilling at 60 ℃ to remove ethanol in the mixed solution to obtain particles 1;
5) drying the particles 1 in vacuum for 6 hours to obtain particles 2;
6) and (3) dissolving the particles 2, the anionic surfactant and the auxiliary agent in water, adding magnesium oxide and calcium oxide, and stirring and mixing uniformly to obtain the required chemical repairing agent for the low oil-containing oil sludge.
In the step 1, the ethanol is divided into a first component ethanol and a second component ethanol, wherein the weight ratio of the first component ethanol to the second component ethanol is 1: 1.
in the step 2, diethylene glycol ethyl ether and adipic acid are added into a container, stirred and reacted for 1.2 hours at the speed of 600 revolutions per minute in water bath heating, the mixture is cooled to room temperature, then the first component ethanol is added until the first component ethanol is completely dissolved to obtain a first solution, and the first solution is heated to 140 ℃ in water bath.
In the step 3, dicyclohexylmethane diisocyanate and the second component ethanol are uniformly mixed, and polyetheramine is gradually added under the stirring condition to obtain a second solution, and the stirring is performed at 400 revolutions per minute.
And 4, mixing the first solution and the second solution, uniformly stirring to obtain a mixed solution, and distilling at 60 ℃ to remove ethanol in the mixed solution to obtain particles 1, wherein the distillation time is 2 hours.
The beneficial effects of the invention are:
the chemical repairing agent for the low-oil-content oil sludge has the advantages of large specific surface area, strong adsorption capacity and the like through magnesium oxide, can well adsorb petroleum molecules or fix the petroleum molecules in gaps of magnesium oxide powder, and secondly, magnesium oxide and calcium oxide both belong to alkaline oxides and can release a large amount of heat through reaction with water, so that light components of petroleum hydrocarbon can be volatilized, the petroleum can be further subjected to hydrolysis reaction under the alkaline environment brought by the reaction, the surface tension of the oil is reduced through the arrangement of diethylene glycol ethyl ether, adipic acid, ethanol, dicyclohexylmethane diisocyanate, polyetheramine, sodium dodecyl sulfate and sodium silicate, the migration capacity of petroleum hydrocarbon pollutants is improved, the pollutants are promoted to be desorbed from soil, and secondary pollution is not easily caused.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The chemical repairing agent for the low-oil-content oil sludge is characterized by comprising the following raw materials in parts by weight: 48-52 parts of magnesium oxide, 100-104 parts of calcium oxide, 2-4 parts of anionic surfactant, 6-10 parts of assistant, 1400-1600 parts of water, 1-1.2 parts of diethylene glycol ethyl ether, 0.8-1 part of adipic acid, 1.8-2 parts of dicyclohexyl methane diisocyanate, 0.8-1 part of polyether amine and 60-80 parts of ethanol.
2. The chemical remediation agent for low oil content oil sludge according to claim 1, wherein the anionic surfactant is sodium dodecyl sulfate.
3. The chemical remediation agent for low oil content oil sludge according to claim 1, wherein the auxiliary agent is sodium silicate.
4. The chemical repairing agent for the low oil content oil sludge according to claim 1, which is characterized by comprising the following steps:
1) separating the ethanol into a first component ethanol and a second component ethanol;
2) adding diethylene glycol ethyl ether and adipic acid into a container, stirring and reacting for 1-1.2 hours at the speed of 500-600 revolutions per minute in water bath heating, cooling to room temperature, and adding a first component of ethanol until the ethanol is completely dissolved to obtain a first solution;
3) uniformly mixing dicyclohexylmethane diisocyanate and a second component of ethanol, and gradually adding polyether amine under the stirring condition to obtain a second solution;
4) mixing the first solution and the second solution, uniformly stirring to obtain a mixed solution, and distilling at 40-60 ℃ to remove ethanol in the mixed solution to obtain particles 1;
5) vacuum drying the particles 1 for 4-6 hours to obtain particles 2;
6) and (3) dissolving the particles 2, the anionic surfactant and the auxiliary agent in water, adding magnesium oxide and calcium oxide, and stirring and mixing uniformly to obtain the required chemical repairing agent for the low oil-containing oil sludge.
5. The chemical repairing agent for the low oil content oil sludge according to claim 4, wherein the ethanol is divided into a first component ethanol and a second component ethanol in the step 1, and the weight ratio of the first component ethanol to the second component ethanol is 1: 1.
6. the chemical repairing agent for oil sludge with low oil content as claimed in claim 4, wherein in the step 2, diethylene glycol ethyl ether and adipic acid are added into a container, the mixture is stirred and reacted for 1-1.2 hours at 600 rpm in water bath heating, the mixture is cooled to room temperature, then the first component ethanol is added until the mixture is completely dissolved to obtain a first solution, and the mixture is heated to 140 ℃ in water bath heating.
7. The chemical repairing agent for oil sludge with low oil content as claimed in claim 4, wherein the dicyclohexylmethane diisocyanate and the second component ethanol are uniformly mixed in step 3, and the polyether amine is gradually added under stirring to obtain the second solution, wherein the stirring is performed at 300-400 rpm.
8. The chemical repairing agent for the oil sludge with low oil content as claimed in claim 4, wherein the first solution and the second solution are mixed and stirred uniformly in step 4 to obtain a mixed solution, ethanol in the mixed solution is distilled and removed at 40-60 ℃ to obtain particles 1, and the distillation time is 1-2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210533512.9A CN114772884A (en) | 2022-05-17 | 2022-05-17 | Chemical repairing agent for low-oil-content oil sludge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210533512.9A CN114772884A (en) | 2022-05-17 | 2022-05-17 | Chemical repairing agent for low-oil-content oil sludge |
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| CN105771913A (en) * | 2016-03-21 | 2016-07-20 | 南开大学 | Method of utilizing modified corncobs to purify and elute cleaning liquid for soil seriously polluted by petroleum |
| CN107891060A (en) * | 2017-12-29 | 2018-04-10 | 大连润鸣材料技术有限公司 | The method for repairing petroleum hydrocarbon contaminated soil |
| CN110527515A (en) * | 2019-08-20 | 2019-12-03 | 北京上水环境科技发展有限公司 | A kind of petroleum hydrocarbon contaminated soil renovation agent and its preparation and application method |
| CN110564421A (en) * | 2019-09-11 | 2019-12-13 | 纳新环保材料(湖北)有限公司 | Contaminated oil soil remediation agent and using method thereof |
| CN112680231A (en) * | 2020-12-08 | 2021-04-20 | 广西博世科环保科技股份有限公司 | Repairing agent and repairing method for repairing aged petroleum polluted soil |
| CN113072945A (en) * | 2021-03-23 | 2021-07-06 | 中国石油大学(华东) | Microemulsion for high-concentration crude oil polluted severe saline-alkali soil and restoration method thereof |
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