CN115677373B - Method for preparing ceramic sand from clear tank oil sludge - Google Patents
Method for preparing ceramic sand from clear tank oil sludge Download PDFInfo
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- CN115677373B CN115677373B CN202211314570.9A CN202211314570A CN115677373B CN 115677373 B CN115677373 B CN 115677373B CN 202211314570 A CN202211314570 A CN 202211314570A CN 115677373 B CN115677373 B CN 115677373B
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- 239000010802 sludge Substances 0.000 title claims abstract description 39
- 239000004576 sand Substances 0.000 title claims abstract description 34
- 239000000919 ceramic Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 238000000197 pyrolysis Methods 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 9
- 238000001354 calcination Methods 0.000 claims abstract description 8
- 238000000227 grinding Methods 0.000 claims abstract description 8
- 239000011521 glass Substances 0.000 claims abstract description 7
- 238000002425 crystallisation Methods 0.000 claims abstract description 6
- 230000008025 crystallization Effects 0.000 claims abstract description 6
- 239000004014 plasticizer Substances 0.000 claims abstract description 6
- 239000002699 waste material Substances 0.000 claims abstract description 5
- 239000013078 crystal Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 238000009495 sugar coating Methods 0.000 claims description 5
- 239000000440 bentonite Substances 0.000 claims description 4
- 229910000278 bentonite Inorganic materials 0.000 claims description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical group O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 4
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical group [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 4
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 240000003183 Manihot esculenta Species 0.000 claims description 3
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims description 3
- 235000019698 starch Nutrition 0.000 claims description 3
- 239000008107 starch Substances 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 239000004375 Dextrin Substances 0.000 claims description 2
- 229920001353 Dextrin Polymers 0.000 claims description 2
- 229910052661 anorthite Inorganic materials 0.000 claims description 2
- 235000012216 bentonite Nutrition 0.000 claims description 2
- NWXHSRDXUJENGJ-UHFFFAOYSA-N calcium;magnesium;dioxido(oxo)silane Chemical compound [Mg+2].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O NWXHSRDXUJENGJ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 235000019425 dextrin Nutrition 0.000 claims description 2
- GWWPLLOVYSCJIO-UHFFFAOYSA-N dialuminum;calcium;disilicate Chemical compound [Al+3].[Al+3].[Ca+2].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] GWWPLLOVYSCJIO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052637 diopside Inorganic materials 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000008187 granular material Substances 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 28
- 239000003921 oil Substances 0.000 description 19
- 239000003208 petroleum Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 229910001570 bauxite Inorganic materials 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 229910052656 albite Inorganic materials 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 235000013339 cereals Nutrition 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 229910001610 cryolite Inorganic materials 0.000 description 2
- 239000010459 dolomite Substances 0.000 description 2
- 229910000514 dolomite Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 238000010587 phase diagram Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 fatlute Substances 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910052907 leucite Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 150000003904 phospholipids Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The invention provides a method for preparing ceramic sand by using clear tank sludge, which comprises the following steps: 1. pyrolyzing the clear tank sludge to obtain pyrolysis residues; 2. and (3) batching: mixing 70-80 parts of pyrolysis residues and 20-30 parts of waste glass powder, and externally doping 1-6 parts of crystallization promoter and 3-5 parts of plasticizer for mixed grinding; 3. granulating; 4. calcining: the calcination temperature is controlled as follows: the granules are kept at 100-200 ℃ for 30-60 min; heating to 400-500 ℃ and staying for 30-60 min; heating to 800-900 ℃ and staying for 30-60 min; heating to 1050-1150 ℃ at a speed of 5 ℃/min, and staying for 30-60 min; then the temperature is reduced to 800 ℃ at the speed of not more than 10 ℃/min. The invention can solve the problem of recycling treatment of the clean tank oil sludge and reduce the production cost of the artificial ceramic grain sand.
Description
Technical Field
The invention relates to the field of waste recycling treatment, in particular to a method for preparing ceramic sand from pyrolysis residues of clear tank sludge.
Background
The clean tank sludge, also called tank bottom sludge, is one kind of oil-containing sludge, and is mainly formed by depositing small amount of mechanical impurities, sand grains, soil, heavy metal salt, paraffin and asphaltene heavy oil components in oil product at the bottom of oil tank when the oil product is stored in storage tank. It features low solid content, high viscosity and high adhesion. The recovery of oil products is difficult to realize by a common hot washing method, and the oil products are usually treated by adopting a method of modulating centrifugal decrement and then pyrolyzing, wherein typical components of residues after oil removal are as follows: 45-55% of SiO2, 9-13% of Al2O3, 9-13% of Fe2O3, 15-20% of CaO, 1-4% of MgO, 2-6% of Na2O, 1-4% of K20 and 10-20% of C.
In the existing technology for recycling the oily sludge, firing the ceramsite by using the oily sludge is a solution, and the ceramsite is usually fired by adding other ingredients to adjust the ingredients to reach a level which meets or approximates to a Riley phase diagram. The components of the tank cleaning sludge and the components required by the Riley phase diagram are greatly different, and particularly the calcium content in the tank cleaning sludge is seriously out of standard, and even if the tank cleaning sludge is blended, the blending amount is low.
The petroleum fracturing propping agent is solid particles for supporting rock cracks during oil field exploitation, can greatly improve the recovery ratio of petroleum, and is an essential important material for modern petroleum fracturing exploitation. Proppants commonly used today are natural quartz sand and artificial ceramic sand. The artificial ceramic sand is made by firing bauxite as a main raw material, and the main crystal phase of the artificial ceramic sand is corundum or mullite, and has the advantages of high density, high strength and high price.
The applicant has studied the technology, and the prior art for preparing the fracturing propping agent by using the oil sludge exists in the prior patent literature. As disclosed in patent document 1 (CN 110257046 a), a method for preparing a petroleum fracturing propping agent from red mud and oil sludge is disclosed, wherein the main components of alumina by-product red mud and oil sludge sand, such as silicon, aluminum, iron, etc., are used as main components, and the high-strength petroleum fracturing propping agent is obtained through proportioning, molding and calcining. Patent document 2 (CN 109467414 a) discloses a method for preparing a fracturing-resistant proppant, which comprises the steps of preparing a fracturing-resistant ceramsite proppant from albite, bauxite, kaolin, fly ash, dolomite, cryolite, tetraethoxysilane modified rice hull fiber, fatlute, fatty acid, modified rubber powder, polyalcohol, phospholipid, mineral powder, sodium bicarbonate and a silane coupling agent.
The applicant found that: in the prior art including the above documents, it is difficult to obtain a balance between the raw material cost, the process cost, the proppant density and the compressive strength in preparing the ceramsite sand of different grades. The components such as the red mud, the oil sludge and the like in the raw materials have larger deviation, cannot be directly used, and require complex pretreatment procedures; such as albite, bauxite, kaolin, fly ash, dolomite, cryolite and the like, and the production cost is high. At present, no preparation method which has simple process and low production cost and is specially used for preparing low-density high-strength ceramsite sand aiming at clear tank sludge exists in the industry.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problem to be solved by the invention is to provide a method for preparing ceramic sand by using the clean tank sludge, thereby reducing the production cost, obtaining ceramic sand with excellent physical properties and solving the problems of innocuity and recycling of the clean tank sludge which is difficult to treat.
A method for preparing ceramic sand by using clear tank sludge, comprising the following steps:
1. pyrolyzing the clear tank sludge to obtain pyrolysis residues;
2. and (3) batching: mixing 70-80 parts of pyrolysis residues and 20-30 parts of waste glass powder, and externally doping 1-6 parts of crystallization promoter and 3-5 parts of plasticizer for mixed grinding;
3. granulating: granulating the ground mixture;
4. calcining: the calcination temperature is controlled as follows: the granules are kept at 100-200 ℃ for 30-60 min; heating to 400-500 ℃ and staying for 30-60 min; heating to 800-900 ℃ and staying for 30-60 min; heating to 1050-1150 ℃ at a speed of 5 ℃/min, and staying for 30-60 min; then the temperature is reduced to 800 ℃ at the speed of not more than 10 ℃/min.
Further, the water content of the pyrolysis residue obtained in the step 1 is less than or equal to 1, and the oil content is less than or equal to 1.
Further, in step 2, the fineness after the mixing grinding is controlled below 45 micrometers.
Further, in step 2, the crystallization promoter includes, but is not limited to, calcium fluoride, titanium dioxide.
Further, in step 2, the plasticizer includes, but is not limited to, bentonite, dextrin, tapioca starch.
Further, in step 3, the granulation machine includes, but is not limited to, a forced mixing granulator, a sugar coating machine.
Through the research of the applicant, the clear tank oil sludge is used as the main raw material of the artificial ceramic sand, only a small amount of waste glass powder, crystallization promoter and plasticizer are needed to be added, and the ceramic sand mainly comprising anorthite and diopside crystal phases can be obtained through a proper sintering method, the firing temperature is lower, the density of the prepared ceramic sand is lower, and the strength can reach a medium level. Wherein the calcination temperature is controlled to be kept at 100-200 ℃ for 30-60 min, which is the water removal; stay at 400-500 ℃ for 30-60 min, and remove residual carbon; standing at 800-900 ℃ for 30-60 min for crystallizing; the heating rate is not more than 5 ℃/min at the temperature of more than 900 ℃, which is the gradual growth of the crystal; the temperature is kept at 1050-1150 ℃ for 30-60 min, so that crystals are formed finally; the cooling speed from the sintering temperature to 800 ℃ is not more than 10 ℃/min, so as to avoid the influence of microcracks formed by the excessively rapid cooling on the strength.
The beneficial effects are that: the invention can solve the problem of recycling treatment of the clean tank oil sludge and reduce the production cost of the artificial ceramic grain sand.
Detailed Description
For a clearer understanding of the objects, technical solutions and technical effects of the present invention, the present invention will be further described below, but the scope of the present invention is not limited to the following examples.
The sludge used in the specific embodiment is clear tank sludge of a factory in Shaanxi.
Example 1:
a method for preparing ceramic sand by using clear tank sludge, comprising the following steps:
(1) Performing anaerobic pyrolysis on the clean tank sludge by using a vacuum atmosphere furnace to ensure that the water content is less than 1% and the oil content is less than 1%;
(2) Mixing the pyrolyzed residues with glass powder according to a mass ratio of 8:2, adding 1% by weight of calcium fluoride, and mixing and grinding 5% by weight of tapioca starch until the fineness is below 45 micrometers;
(3) Preparing the mixture into particles with 20-40 meshes by using a sugar coating machine;
(4) Drying the granule below 200deg.C for 30min, heating to 400deg.C for 30min, heating to 800deg.C for 30min, heating to 1060 deg.C for 60min at a rate of 3deg.C/min, and cooling to 800deg.C at a rate of 10deg.C/min; the ceramic sand can be obtained.
The obtained ceramsite sand has a bulk density of 1.45g/cm3 and a crushing value of 6.1% at 52 MPa.
Example 2:
a method for preparing ceramic sand by using clear tank sludge, comprising the following steps:
(1) Performing anaerobic pyrolysis on the clean tank sludge by adopting a pyrolysis furnace to ensure that the water content is less than 1% and the oil content is less than 1%;
(2) Mixing the pyrolyzed residues with glass powder according to a mass ratio of 7:3, adding 6 wt% of titanium dioxide and 3 wt% of bentonite, and mixing and grinding until the fineness is below 45 microns;
(3) Preparing the mixture into particles with 20-40 meshes by using a sugar coating machine;
(4) Drying the granule below 200deg.C for 30min, heating to 400deg.C for 30min, heating to 850deg.C for 60min, heating to 1100deg.C for 60min at 5deg.C/min, and cooling to 800deg.C at 5deg.C/min; the ceramic sand can be obtained.
The obtained ceramsite sand has a bulk density of 1.48g/cm3 and a crushing value of 2.1% at 52 MPa.
Example 3:
a method for preparing ceramic sand by using clear tank sludge, comprising the following steps:
(1) And performing anaerobic pyrolysis on the clean tank sludge by adopting a pyrolysis furnace to ensure that the water content is less than 1% and the oil content is less than 1%.
(2) Mixing the pyrolyzed residues with glass powder according to a mass ratio of 7:3, and mixing and grinding 2% by weight of calcium fluoride, 2% by weight of leucite and 3% by weight of bentonite to a fineness of below 45 microns.
(3) And preparing the mixture into 30-50-mesh granules by using a sugar coating machine.
(4) Drying the granule below 200deg.C for 30min, heating to 450deg.C for 30min, heating to 900deg.C for 40min, heating to 1140 deg.C for 40min at a rate of 5deg.C/min, and cooling to 800deg.C at a rate of 10deg.C/min; the ceramic sand can be obtained.
The obtained ceramsite sand has a bulk density of 1.42g/cm3 and a crushing value of 5.6% at 52 MPa.
The above examples are only specific to the practical embodiments of the present invention, and are not intended to limit the scope of the invention, but all equivalent implementations or modifications that do not depart from the scope of the invention are included in the claims.
Claims (5)
1. A method for preparing ceramic sand by using clear tank sludge, which is characterized by comprising the following steps:
(1) Pyrolyzing the clean tank sludge to obtain pyrolysis residues;
(2) And (3) proportioning: mixing 70-80 parts of pyrolysis residues and 20-30 parts of waste glass powder, and externally doping 1-6 parts of crystallization promoter and 3-5 parts of plasticizer for mixed grinding;
the crystallization promoter is calcium fluoride or titanium dioxide;
(3) Granulating: granulating the ground mixture;
(4) And (3) calcining: the calcination temperature is controlled as follows: the particles are kept at 100-200 ℃ for 30-60 min, which is the water removal; heating to 400-500 ℃ and staying for 30-60 min to remove residual carbon; heating to 800-900 deg.c and maintaining for 30-60 min for crystallizing; then heating to 1050-1150 ℃ at a speed of 5 ℃/min, so as to gradually grow the crystal; the residence time is 30 to 60 minutes, so that crystals are finally formed; then the temperature is reduced to 800 ℃ at a speed of not more than 10 ℃/min, so as to avoid the formation of microcracks during the excessively rapid cooling; thus obtaining the ceramic sand with anorthite and diopside crystal phases as main components.
2. A method for preparing ceramic sand from clean tank sludge as claimed in claim 1, wherein: the water content of the pyrolysis residue obtained in the step 1 is less than or equal to 1 percent, and the oil content is less than or equal to 1 percent.
3. A method for preparing ceramic sand from clean tank sludge as claimed in claim 1, wherein: in the step 2, the fineness after the mixed grinding is controlled below 45 micrometers.
4. A method for preparing ceramic sand from clean tank sludge as claimed in claim 1, wherein: in the step 2, the plasticizer is bentonite, dextrin or tapioca starch.
5. A method for preparing ceramic sand from clean tank sludge as claimed in claim 1, wherein: in step 3, the granulating machine is a forced mixing granulator or a sugar coating machine.
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| CN202211314570.9A CN115677373B (en) | 2022-10-26 | 2022-10-26 | Method for preparing ceramic sand from clear tank oil sludge |
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| CN202211314570.9A CN115677373B (en) | 2022-10-26 | 2022-10-26 | Method for preparing ceramic sand from clear tank oil sludge |
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| CN117466621B (en) * | 2023-12-28 | 2024-03-08 | 西南石油大学 | Hollow ultra-light ceramsite based on oil-based rock debris and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201319557D0 (en) * | 2013-11-06 | 2013-12-18 | Statoil Petroleum As | Porus Proppants |
| CN106518148A (en) * | 2016-11-11 | 2017-03-22 | 中石化节能环保工程科技有限公司 | Ceramsite with lipophilic characteristic and preparation method of ceramsite |
| CN106747371A (en) * | 2016-11-11 | 2017-05-31 | 中石化节能环保工程科技有限公司 | Ceramic fracturing sand with oil-wet behavior and preparation method thereof |
| CN109851323A (en) * | 2018-12-29 | 2019-06-07 | 武汉理工大学 | A kind of haydite and preparation method thereof using the preparation of oily sludge Thermal desorption residue |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011094106A1 (en) * | 2010-01-29 | 2011-08-04 | Oxane Materials, Inc. | Self-toughened high-strengh proppant and methods of making same |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201319557D0 (en) * | 2013-11-06 | 2013-12-18 | Statoil Petroleum As | Porus Proppants |
| CN106518148A (en) * | 2016-11-11 | 2017-03-22 | 中石化节能环保工程科技有限公司 | Ceramsite with lipophilic characteristic and preparation method of ceramsite |
| CN106747371A (en) * | 2016-11-11 | 2017-05-31 | 中石化节能环保工程科技有限公司 | Ceramic fracturing sand with oil-wet behavior and preparation method thereof |
| CN109851323A (en) * | 2018-12-29 | 2019-06-07 | 武汉理工大学 | A kind of haydite and preparation method thereof using the preparation of oily sludge Thermal desorption residue |
Non-Patent Citations (1)
| Title |
|---|
| 油田污水处理技术发展现状及展望;李平平;;内江科技(第07期);第79-80页 * |
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