CN115340266A - Method for recycling oil sludge generated in industrial production - Google Patents

Method for recycling oil sludge generated in industrial production Download PDF

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CN115340266A
CN115340266A CN202210664096.6A CN202210664096A CN115340266A CN 115340266 A CN115340266 A CN 115340266A CN 202210664096 A CN202210664096 A CN 202210664096A CN 115340266 A CN115340266 A CN 115340266A
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oil sludge
oil
industrial production
recycling
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刘作华
勾星月
郑国灿
陶长元
刘仁龙
杜军
谢昭明
范兴
唐金晶
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Chongqing University
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • 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
    • C02F11/006—Electrochemical treatment, e.g. electro-oxidation or electro-osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/0481—Other specific industrial waste materials not provided for elsewhere in C04B18/00
    • C04B18/049—Wastes from oil or other wells, e.g. drilling mud
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02—Treatment
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02—Treatment
    • C04B20/023—Chemical treatment
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • 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
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Civil Engineering (AREA)
  • Treatment Of Sludge (AREA)

Abstract

The invention discloses a method for recycling oil sludge generated in industrial production, which mainly comprises the steps of pretreating the oil sludge to obtain an oil sludge suspension; d, introducing direct current to the oil sludge suspension under the condition of good air tightness for electrolysis treatment; centrifuging the electrolyzed oil sludge suspension to realize oil-liquid-solid three-phase separation, and respectively recovering surface layer floating oil and solution; drying the oil sludge obtained by the electrolysis treatment to obtain the building material. The method has the advantages of reasonable treatment and resource utilization of the oil sludge, simple process, easy operation and low energy consumption, can realize oil phase recovery in the oil sludge, can realize harmless and resource utilization of the oil sludge, realizes centralized reflection of environmental benefits and economic benefits, and has good popularization and application values.

Description

Method for recycling oil sludge generated in industrial production
Technical Field
The invention belongs to the technical field of oil sludge treatment.
Background
Oil sludge is one of the most important solid wastes generated in the petroleum industry, the natural gas industry and other processes. Sludge is typically a complex and stable viscous mass formed from water, saturated hydrocarbons, aromatics, resins, asphaltenes, solid particles, and small amounts of metals and heavy metals. The improper disposal of the oil sludge can cause serious threat to the environment and endanger the health of human beings. The recovery of the petroleum hydrocarbon in the oil sludge is an ideal and environment-friendly method for treating the oil sludge waste, and the method can recover valuable petroleum hydrocarbon resources and reduce the use of non-renewable energy.
Due to the complex nature of the sludge itself, existing processes do not provide a compromise between meeting environmental requirements and reducing disposal costs. Therefore, further development and improvement are required.
Disclosure of Invention
The invention aims to provide a method for recycling oil sludge generated in industrial production, which is characterized by comprising the following steps:
mixing oil sludge produced in industrial production with alkali liquor for pretreatment to obtain an oil sludge suspension;
placing the oil sludge suspension obtained in the step 1) in an electrolytic bath, and electrifying direct current to carry out electrolytic treatment;
centrifuging the mixture after the electrolysis is finished, and separating out surface layer floating oil, liquid and solid oil sludge;
and 4, drying the solid oil sludge obtained in the step 3 to obtain the admixture for concrete.
The oil sludge comprises one or more of tank bottom oil sludge, ground oil sludge, sludge from a sewage treatment plant, oil sludge produced in the oil exploitation process, oil sludge produced in the oil refining process, oil sludge produced in the shale gas exploitation process, and solid and slurry substances of active carbon containing organic components.
Based on the method, the floating oil separated in the step 3) can be recovered, and the recovery of hydrocarbon substances in the oil sludge is realized. And 3, recycling the alkali liquor separated in the step 3. And 4, the solid generated in the step 4 can be used as a building material with excellent performance, so that resource utilization is realized.
Further, in the step 1), the liquid-solid ratio in the mixing pretreatment is 1:1 to 5:1.
Further, in the step 1), during the mixing pretreatment, the alkali liquor is a sodium hydroxide solution with the concentration of 1.5-3.5 wt%.
Further, in the step 2), the electrode material is stainless steel material, the electrolysis time is 30-150 min, the volume of the suspension liquid after one treatment can be 2-4L, and the current density is 0.2-0.4A/cm 2 。
Further, the method comprises the following steps: in the step 2, an electrolytic bath with air tightness is adopted, and generated gas is collected in the electrolytic process.
Further, in the step 3), a centrifugal separation method is adopted to realize oil-liquid solid-three phase separation.
Further, in the step 4), the obtained admixture is uniformly mixed with cement, fly ash and water when preparing concrete, and then the concrete is obtained through curing. Preferably, the cement and the fly ash are ground and sieved by a 200-mesh sieve, and are uniformly mixed with the product obtained in the step 4 and water, the added water amount is 33wt% of the total mixed materials, the forming time is about 1d, and the natural curing time is 7-28 d.
Compared with the prior art, the technical scheme of the invention has the following technical effects: the structure and the material composition of the oil sludge can be changed, so that the recovery of the petroleum hydrocarbon in the oil sludge can be realized easily; meanwhile, gas generated in the process can be recycled as energy; the oil sludge obtained by electrolytic treatment can be used as a blending material of building materials.
The method for recycling the oil sludge realizes the requirements of reduction, harmlessness and recycling of oil sludge treatment with lower energy consumption, so that environmental benefits and economic benefits are reflected in a centralized manner, and the method has good popularization and application values.
Drawings
Fig. 1 is a process flow diagram of the method for recycling oil sludge according to the present invention.
Detailed Description
The present invention is further illustrated by the following examples, but it should not be construed that the scope of the above-described subject matter is limited to the following examples. Various substitutions and alterations can be made without departing from the technical idea of the invention and the scope of the invention is covered by the present invention according to the common technical knowledge and the conventional means in the field.
Example 1:
a method for recycling oil sludge generated in industrial production is characterized by comprising the following steps:
taking waste oil sludge generated in the shale gas exploitation process as a test sample, and mixing the waste oil sludge with alkali liquor for pretreatment to obtain an oil sludge suspension.
The raw components of the sludge sample used in this example are as follows:
serial number Substance(s) Weight percent of
1 Moisture content 7.27％
2 Ash content 76.33％
3 Volatile component 12.41％
4 Fixed carbon 3.99％
Wherein the inorganic components in the ash are as follows:
Figure BDA0003691026700000021
Figure BDA0003691026700000031
during the mixing pretreatment, the alkali liquor is a sodium hydroxide solution with the concentration of 2wt%, and the liquid-solid ratio is 5:1.
Placing the oil sludge suspension obtained in the step 1) in an electrolytic bath, and electrifying direct current to carry out electrolytic treatment; the electrode material is stainless steel material, the electrolysis time is 90min, and the current density is 0.3A/cm 2 。
In the embodiment, an electrolytic cell with air tightness is adopted, and generated gas is collected in the electrolytic process.
Centrifuging the mixture after the electrolysis is finished, namely centrifuging for 15min at 3000r/min, and separating out superficial oil slick, liquid and solid oil sludge;
and 4, drying the solid oil sludge obtained in the step 3 in a drying oven at 105 ℃ for 24 hours to obtain the admixture for concrete.
When the obtained admixture is used for preparing concrete, the admixture is uniformly mixed with cement, fly ash and water, and then the concrete is obtained through maintenance. Uniformly mixing the mixture with cement, fly ash and water which are sieved by a 200-mesh sieve, pouring the mixture into a mold for molding, wherein the mass ratio of the added materials is that the weight ratio of oil sludge to the cement is that the fly ash =1: 0.6, the water addition amount is 33wt% of the total material mass, the molding time is 1d, demolding and taking out after 1d, and naturally curing for 28d.
And (3) testing:
the composition of the surface layer oil slick recovered from the waste oil sludge (the sample used in step 1 of this example) generated during the shale gas extraction process was qualitatively analyzed (the testing instrument is GC-MS 5977B, agilent technologies ltd., usa), and the specific data are shown in the following table:
TABLE 2 recovery of oil component in step 3 of this example
Retention time (min) Name of Compound
1.040 C 8 H 18
6.708 C 9 H 20
10.085 C 11 H 24
13.334/16.438 C 12 H 26
19.277 C 14 H 30
21.978 C 17 H 36
24.415/26.843/29.006/31.170 C 21 H 44
33.196 C 24 H 50
The test results showed that the composition of the surface layer oil slick recovered from the waste oil sludge (sample used in step 1 of this example) generated during shale gas exploitation was C 8 ～C 24 The long-chain alkane has good recovery value.
The oil content of a sample before and after electrolytic treatment of waste oil sludge (sample adopted in step 1 of this example) generated in the shale gas exploitation process is determined (the determination method is that an oil sludge sample is placed in a drying oven at 105 ℃ to be dried to constant weight, then the sample is transferred to a muffle furnace, and the ratio of the mass difference value after roasting for 2 hours at 450 ℃ to the oil sludge sample mass is the oil content of the sample). The determination result shows that the total petroleum hydrocarbon content of the waste oil sludge generated in the exploitation process of the electrolytically treated shale gas can be removed to be about 62.791wt%, and the experiment has reproducibility.
Qualitative analysis (the test instruments are GC-1100 and a smoke gas analyzer Sensonic 4000 of Beijing Pujingyo general instruments Co., ltd.) respectively performed on the non-condensable gas generated by the cathode and the anode in the step 2) of the embodiment shows that the gas generated by the cathode is pure gas generated by electrolyzing the waste oil sludge suspension generated in the shale gas exploitation processThe clean hydrogen can be used as energy gas for recycling. The gas produced at the anode contains oxygen, carbon oxide stream and trace C 1 、C 2 The gas can be recycled after the anode gas is purified.
And (4) testing the compressive strength of the concrete curing test block prepared in the step (4) according to the technical specification DBJT13-71-2022 for testing the compressive strength of concrete by a rebound method. The test result shows that the solidified test block with the mass ratio of oil sludge to cement to fly ash = 1.7.
Example 2:
a method for recycling oil sludge generated in industrial production is characterized by comprising the following steps:
taking waste oil sludge generated in the shale gas exploitation process as a test sample, and mixing the waste oil sludge with alkali liquor for pretreatment to obtain an oil sludge suspension.
The raw components of the sludge sample used in this example are as follows:
serial number Substance(s) Weight percent of
1 Moisture content 7.27％
2 Ash content 76.33％
3 Volatile component 12.41％
4 Fixed carbon 3.99％
Wherein the inorganic components in the ash are as follows:
serial number Substance(s) Weight percent of
1 SiO 2 37.86％
2 BaSO 4 16.61％
3 Al 2 O 3 11.38％
4 CaO 8.96％
5 S 8.89％
5 Fe 2 O 3 6.85％
6 MgO 2.13％
7 K 2 O 2.71％
8 Balance of 4.61％
During the mixing pretreatment, the alkali liquor is a sodium hydroxide solution with the concentration of 2wt%, and the liquid-solid ratio is 4:1.
Placing the oil sludge suspension obtained in the step 1) in an electrolytic bath, and electrifying direct current to carry out electrolytic treatment; the electrode material is stainless steel material, the electrolysis time is 60min, and the current density is 0.4A/cm 2 。
In the embodiment, an electrolytic cell with air tightness is adopted, and generated gas is collected in the electrolytic process.
Centrifuging the mixture after the electrolysis is finished, namely centrifuging for 15min at 3000r/min, and separating out superficial oil slick, liquid and solid oil sludge;
and 4, drying the solid oil sludge obtained in the step 3 in a drying oven at 105 ℃ for 24 hours to obtain the admixture for concrete.
When the obtained admixture is used for preparing concrete, the admixture is uniformly mixed with cement, fly ash and water, and then the concrete is obtained through maintenance. Uniformly mixing the mixture with cement, fly ash and water which are sieved by a 200-mesh sieve, pouring the mixture into a mold for molding, wherein the mass ratio of the added materials is that the weight ratio of oil sludge to the cement is that the fly ash = 0.8.
And (3) testing:
the oil content of a sample before and after electrolytic treatment of waste oil sludge (sample adopted in step 1 of this example) generated in the shale gas exploitation process is determined (the determination method is that an oil sludge sample is placed in a drying oven at 105 ℃ to be dried to constant weight, then the sample is transferred to a muffle furnace, and the ratio of the mass difference value after roasting for 2 hours at 450 ℃ to the oil sludge sample mass is the oil content of the sample). The determination result shows that the total petroleum hydrocarbon content of the waste oil sludge generated in the exploitation process of the electrolytically treated shale gas can be removed to be about 62.386wt%, and the experiment has reproducibility.
The qualitative analysis of the non-condensable gas generated by the cathode and the anode in step 2) (the test instruments are GC-1100 and a smoke analyzer Sensonic 4000 of beijing puzzo general instruments co., ltd.) respectively shows that the gas generated by the cathode is pure hydrogen gas and can be recycled as energy gas when the waste oil sludge suspension generated in the shale gas exploitation process is electrolytically treated. The gas produced at the anode contains oxygen, carbon oxide stream and trace C 1 、C 2 The gas can be recycled after the anode gas is purified.
And (5) testing the compressive strength of the concrete curing test block prepared in the step (4) according to DBJT13-71-2022 which is technical specification for testing the compressive strength of the concrete by a rebound method. The test result shows that the cement-fly ash-cement concrete has a certain compressive strength, the specific value is 5.1MPa, the cement mortar meets the strength grade of M5, and the cement mortar can be used as a building raw material and has practical application value.
Example 3:
a method for recycling oil sludge generated in industrial production is characterized by comprising the following steps:
taking waste oil sludge generated in the shale gas exploitation process as a test sample, and mixing the waste oil sludge with alkali liquor for pretreatment to obtain an oil sludge suspension.
The raw components of the sludge sample used in this example are as follows:
serial number Substance(s) Weight percent of
1 Moisture content 7.27％
2 Ash content 76.33％
3 Volatile component(s) 12.41％
4 Fixed carbon 3.99％
Wherein the inorganic components in the ash are as follows:
serial number Substance(s) Weight percent of
1 SiO 2 37.86％
2 BaSO 4 16.61％
3 Al 2 O 3 11.38％
4 CaO 8.96％
5 S 8.89％
5 Fe 2 O 3 6.85％
6 MgO 2.13％
7 K 2 O 2.71％
8 Balance of 4.61％
During the mixing pretreatment, the alkali liquor is 3wt% sodium hydroxide solution, and the liquid-solid ratio is 4:1.
Placing the oil sludge suspension obtained in the step 1) in an electrolytic bath, and electrifying direct current to carry out electrolytic treatment; the electrode material is stainless steel material, the electrolysis time is 60min, and the current density is 0.3A/cm 2 。
In the embodiment, an electrolytic cell with air tightness is adopted, and generated gas is collected in the electrolytic process.
Centrifuging the mixture after the electrolysis is finished, namely centrifuging for 15min at 3000r/min, and separating out superficial oil slick, liquid and solid oil sludge;
and 4, drying the solid oil sludge obtained in the step 3 in a drying oven at 105 ℃ for 24 hours to obtain the admixture for concrete.
When the obtained admixture is used for preparing concrete, the admixture is uniformly mixed with cement, fly ash and water, and then the concrete is obtained through maintenance. Uniformly mixing the mixture with cement, fly ash and water which are sieved by a 200-mesh sieve, pouring the mixture into a mold for molding, wherein the mass ratio of the added materials is that the weight ratio of oil sludge to the cement is that the fly ash = 1.2.
And (3) testing:
the oil content of a sample before and after electrolytic treatment of waste oil sludge (sample adopted in step 1 of this example) generated in the shale gas exploitation process is determined (the determination method is that an oil sludge sample is placed in a drying oven at 105 ℃ to be dried to constant weight, then the sample is transferred to a muffle furnace, and the ratio of the mass difference value after roasting for 2 hours at 450 ℃ to the oil sludge sample mass is the oil content of the sample). The determination result shows that the total petroleum hydrocarbon content of the waste oil sludge generated in the electrolytic shale gas exploitation process can be removed to be about 60.566wt%, and the experiment has reproducibility.
The qualitative analysis of the non-condensable gas generated by the cathode and the anode in step 2) (the test instruments are GC-1100 and a smoke analyzer Sensonic 4000 of beijing puzzo general instruments co., ltd.) respectively shows that the gas generated by the cathode is pure hydrogen gas and can be recycled as energy gas when the waste oil sludge suspension generated in the shale gas exploitation process is electrolytically treated. The gas produced at the anode contains oxygen, carbon oxide stream and trace C 1 、C 2 The gas can be recycled after the anode gas is purified.
And (4) testing the compressive strength of the concrete curing test block prepared in the step (4) according to the technical specification DBJT13-71-2022 for testing the compressive strength of concrete by a rebound method. The test result shows that the cement-fly ash concrete has a certain compressive strength, the specific value is 5.5Mpa, the concrete can meet the M5 strength grade of cement mortar, and the cement-fly ash concrete can be used as a building raw material and has practical application value, wherein the mass ratio of the added materials is oil sludge to cement-fly ash =1.

Claims (7)

1. A method for recycling oil sludge generated in industrial production is characterized by comprising the following steps:
mixing oil sludge generated in industrial production with the alkali liquor for pretreatment to obtain an oil sludge suspension;
placing the oil sludge suspension obtained in the step 1) in an electrolytic bath, and electrifying direct current to carry out electrolytic treatment;
separating floating oil, liquid and solid oil sludge on the surface layer of the mixture after the electrolysis;
and 4, drying the solid oil sludge obtained in the step 3 to obtain the admixture for concrete.
2. The method for recycling oil sludge generated in industrial production according to claim 1, wherein the method comprises the following steps: in the step 1, the liquid-solid ratio is 1:1-5:1 during the mixing pretreatment.
3. The method for recycling oil sludge generated in industrial production according to claim 1 or 2, wherein the method comprises the following steps: in the step 1, during the mixing pretreatment, the alkali liquor is a sodium hydroxide solution with the concentration of 1.5-3.5 wt%.
4. The method for recycling oil sludge generated in industrial production according to claim 2 or 3, wherein the method comprises the following steps: in the step 2, the electrode material is stainless steel material.
5. The method for recycling oil sludge generated in industrial production according to claim 2 or 3, wherein the method comprises the following steps: in the step 2, an electrolytic bath with air tightness is adopted, and generated gas is collected in the electrolytic process.
6. The method for recycling the oil sludge generated in the industrial production according to claim 3, wherein the method comprises the following steps: and 3, adopting a centrifugal separation method to realize the separation of oil liquid and solid.
7. The method for recycling the oil sludge generated in the industrial production according to claim 3, wherein the method comprises the following steps: in the step 4, when the obtained admixture is used for preparing concrete, the admixture is uniformly mixed with cement, fly ash and water, and then the concrete is obtained through curing.
CN202210664096.6A 2022-06-13 2022-06-13 Method for recycling oil sludge generated in industrial production Pending CN115340266A (en)

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Cited By (1)

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CN116623491A (en) * 2023-07-15 2023-08-22 江苏增光新材料科技股份有限公司 Highway maintenance macadam seal layer and production process thereof

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Publication number Priority date Publication date Assignee Title
JP2017144355A (en) * 2016-02-15 2017-08-24 中国電力株式会社 Cleaning method and cleaning device for pcb-contaminated article
RU2691422C1 (en) * 2018-04-16 2019-06-13 Максим Владимирович Назаров Oil sludge processing method

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刘晓瑜;王文斌;尹先清;靖波;张健;孟凡雪;: "含聚油泥处理技术及研究进展", 中外能源 *
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Publication number Priority date Publication date Assignee Title
CN116623491A (en) * 2023-07-15 2023-08-22 江苏增光新材料科技股份有限公司 Highway maintenance macadam seal layer and production process thereof
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