CN112812816A - Oil slurry viscosity modifier and preparation method thereof - Google Patents
Oil slurry viscosity modifier and preparation method thereof Download PDFInfo
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- CN112812816A CN112812816A CN202011570944.4A CN202011570944A CN112812816A CN 112812816 A CN112812816 A CN 112812816A CN 202011570944 A CN202011570944 A CN 202011570944A CN 112812816 A CN112812816 A CN 112812816A
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- oil slurry
- oil
- viscosity modifier
- polyamine
- slurry
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- 239000002002 slurry Substances 0.000 title claims abstract description 69
- 239000004034 viscosity adjusting agent Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title abstract description 10
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002253 acid Substances 0.000 claims abstract description 12
- 229920000768 polyamine Polymers 0.000 claims abstract description 12
- -1 amino, carboxyl Chemical group 0.000 claims abstract description 11
- 238000004821 distillation Methods 0.000 claims abstract description 7
- 238000010992 reflux Methods 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 11
- 125000000217 alkyl group Chemical group 0.000 claims description 6
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 5
- 239000008096 xylene Substances 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 3
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 2
- 125000001931 aliphatic group Chemical group 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 150000004291 polyenes Chemical class 0.000 claims description 2
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000007795 chemical reaction product Substances 0.000 claims 1
- 125000003916 ethylene diamine group Chemical group 0.000 claims 1
- 239000000047 product Substances 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 abstract description 14
- 239000003054 catalyst Substances 0.000 abstract description 4
- 239000000843 powder Substances 0.000 abstract description 4
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 49
- 230000000694 effects Effects 0.000 description 10
- 238000004523 catalytic cracking Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000084 colloidal system Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000010771 distillate fuel oil Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000010762 marine fuel oil Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical class NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- BWDBEAQIHAEVLV-UHFFFAOYSA-N 6-methylheptan-1-ol Chemical compound CC(C)CCCCCO BWDBEAQIHAEVLV-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- FSYKKLYZXJSNPZ-UHFFFAOYSA-N sarcosine Chemical class C[NH2+]CC([O-])=O FSYKKLYZXJSNPZ-UHFFFAOYSA-N 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G29/00—Refining of hydrocarbon oils, in the absence of hydrogen, with other chemicals
- C10G29/02—Non-metals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C233/00—Carboxylic acid amides
- C07C233/01—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
- C07C233/34—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by amino groups
- C07C233/35—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by amino groups with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by an acyclic carbon atom
- C07C233/36—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by amino groups with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by an acyclic carbon atom having the carbon atom of the carboxamide group bound to a hydrogen atom or to a carbon atom of an acyclic saturated carbon skeleton
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/20—Characteristics of the feedstock or the products
- C10G2300/30—Physical properties of feedstocks or products
- C10G2300/302—Viscosity
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention relates to an oil slurry viscosity modifier which simultaneously contains strong polar compounds of amino, carboxyl and amido bond. The invention also provides a preparation method of the oil slurry viscosity modifier, which comprises the following steps: 1) dissolving polyamine in dimethylbenzene, adding dibasic acid in batches, and refluxing and stirring for 2-4 hours at 80-120 ℃ to form ammonium carboxylate; 2) and carrying out reduced pressure distillation at the temperature of 140-180 ℃ for 4-8 h, and dehydrating the ammonium carboxylate to form an amide bond to finally obtain a yellow viscous product. The oil slurry viscosity modifier can reduce the viscosity of oil slurry, enables catalyst powder in the oil slurry to be more easily settled, and can enable the deliming rate of the high-viscosity oil slurry to reach more than 95% and the ash content to be reduced to be less than 0.02% by combining with the oil slurry settling agent.
Description
Technical Field
The invention relates to the technical field of petroleum refining and processing, in particular to a modifier for reducing the viscosity of catalytic cracking oil slurry thrown away and a preparation method thereof.
Background
With the implementation of the tax refunding policy of export of the marine fuel oil in China, domestic refineries actively respond to the production demand and vigorously develop the low-sulfur marine fuel oil. The catalytic cracking oil slurry thrown out is used as an important raw material and becomes a new economic growth point of a refinery. However, the slurry oil often contains 0.2-0.9% of catalyst powder, which severely limits the subsequent use of the slurry oil. For this reason, measures are taken to reduce the solid particle content in the slurry oil. Chemical additive method is usually adopted in domestic refineries, however, the effect of settling agent is different due to the difference of physical and chemical properties of oil slurry in different refineries. Particularly for high-viscosity oil slurry, the content of colloid and asphaltene is high, the movement of molecules and solid particles of the settling agent in the oil slurry is hindered, so that the settling agent is difficult to combine with the catalyst powder, the settling agent is difficult to settle under the action of gravity after combination, and finally the solid content of the settling agent is difficult to reduce. For this reason, measures are necessary to reduce the viscosity of the slurry to facilitate the removal of solid particles.
The viscosity of the slurry oil can be obviously reduced by increasing the temperature and adding light fuel oil, however, the increase of the temperature is usually accompanied with the change of the upstream and downstream processes and the increase of energy consumption; the addition of light fuel oil increases the cost and reduces the economical efficiency of oil slurry recycling, and if the oil slurry is recycled, new equipment needs to be added, so that the operation cost is increased. Therefore, the method for adjusting the viscosity of the oil slurry by adding the oil slurry viscosity modifier is the most economical and convenient treatment method.
The key point of adjusting the viscosity of the oil slurry is to improve the dispersion performance of the colloid and the asphaltene in the oil slurry.
Patent US5948237A describes a sarcosinate derivative which inhibits the deposition of asphaltenes and promotes their dispersion in heavy oils.
Patent US7122112B2 was designed and developed a hydrocarbon compound with carboxyl and amide bonds, which not only disperses asphaltenes, but also improves the anti-emulsification properties of crude oil, lowers system viscosity, reduces sediment formation, reduces surface adhesion and corrosion.
Patent CN1297981A describes a method of adopting tetraethylenepentamine and fat dimer acid as flocculating agents, settling for 16-48h at 80-100 ℃, and assisting centrifugal separation, which can reduce the ash content of oil slurry to below 50 ppm.
In patent CN201810327207.8, the deliming effect is improved by adding acrylic acid high carbonate as a viscosity reducer.
The above patent states that much research is being conducted on the dispersion and viscosity reduction of asphaltenes in heavy oil or crude oil, and that compounds having amino and carboxyl groups can play a positive role by the action of hydrogen bonds with asphaltenes. In the development of slurry settling agents, there have also been reports of the introduction of amino, carboxyl or other viscosity reducing agents to enhance deliming effect. However, the development of the viscosity modifier of the catalytic cracking external-throwing oil slurry is still in the initial stage, and the problems of large addition amount and unobvious effect on the high-viscosity oil slurry generally exist, so that the ash content of the oil slurry is difficult to remove.
Disclosure of Invention
The invention aims to make up the defects of the existing slurry settling agent, designs and synthesizes a slurry viscosity modifier, and connects polyamine and dibasic acid through an amide bond to form a strong polar compound simultaneously containing amino, carboxyl and amide bond so as to improve the dispersity to colloid and asphaltene to reduce the viscosity of the slurry and further improve the removal effect of the slurry settling agent to catalyst powder in catalytic cracking slurry.
The invention provides an oil slurry viscosity modifier, wherein the oil slurry viscosity modifier has the following structural formula:
in the formula, R1Is alkyl chain or alkyl chain containing secondary amino structure, R2Is an alkyl chain of C2-C10.
The invention also provides a preparation method of the oil slurry viscosity modifier, which comprises the following steps:
1) dissolving polyamine in dimethylbenzene, adding dibasic acid in batches, and refluxing and stirring for 2-4 hours at 80-120 ℃ to form ammonium carboxylate;
2) and carrying out reduced pressure distillation at the temperature of 140-180 ℃ for 4-8 h, dehydrating the ammonium carboxylate to form an amide bond, and separating the removed water and a solvent xylene from a reaction system through reduced pressure distillation to finally obtain a yellow viscous product.
In the above preparation method, the polyamine is preferably an aliphatic diamine or a polyene polyamine having C2 to C12, and more preferably ethylenediamine, hexamethylenediamine, diethylenetriamine or triethylenetetramine.
In the preparation method, the dibasic acid is aliphatic dibasic acid of C2-C10.
In the above production method, in the step 1), the molar ratio of the polyamine to the dibasic acid is preferably 1: 1.
The oil slurry viscosity modifier has the advantages that: (1) the amino, carboxyl and amido bonds are combined on one molecule, and can form strong hydrogen bond action with the asphaltene, thereby playing the roles of dispersing the asphaltene and reducing the viscosity of the oil slurry; (2) the raw materials used for synthesis are common chemical raw materials, and the reaction process is simple, so the production cost is low; (3) only contains four elements of carbon, hydrogen, oxygen and nitrogen, and does not contain elements of sulfur, metal and the like which have influence on oil products.
Detailed Description
The present invention will be described with reference to specific examples. It should be noted that the following examples are illustrative, and are not intended to limit the scope of the present invention in any way.
Example 1: preparation of oil slurry viscosity modifier A
12.0g (0.2mol) of ethylenediamine was dispersed in 50mL of xylene, 40.5g (0.2mol) of sebacic acid was added in five portions, and after reaction at 100 ℃ for 3 hours, the temperature was raised to 160 ℃ and distillation was carried out under reduced pressure for 6 hours to obtain a yellow viscous paste.
Example 2: preparation of oil slurry viscosity modifier B
23.2g (0.2mol) of hexamethylenediamine are dispersed in 80mL of xylene, 29.2g (0.2mol) of adipic acid are added in four portions and reacted at 120 ℃ for 2 hours, the temperature is raised to 180 ℃ and distillation is carried out under reduced pressure for 4 hours to give a yellow viscous product.
Example 3: preparation of oil slurry viscosity modifier C
37.9g (0.2mol) of tetraethylenepentamine are dispersed in 60mL of dimethylbenzene, 23.6g (0.2mol) of succinic acid is added in three portions, after reaction for 4h at 80 ℃, the temperature is raised to 140 ℃, and reduced pressure distillation is carried out for 8h, so as to obtain yellow viscous paste.
Example 4: performance evaluation of the three slurry viscosity modifiers prepared in examples 1-3.
(1) Experimental materials
The oil slurry used in the embodiment is heavy oil catalytic cracking external throwing oil slurry provided by a certain refinery, and the kinematic viscosity at 50 ℃ is 367.32mm2(S), the content of colloid and asphaltene is 12.13%, and the content of ash is 0.3304%.
In this embodiment, the oil slurry settling agent is a product independently developed by Zhonghai oil Tianjin chemical research and design institute Limited.
(2) Experimental methods
Under the heating condition, the oil slurry viscosity modifier is dispersed in a mixed solvent of high-flash-point solvent oil and isooctyl alcohol to prepare an oil slurry viscosity modifier solution with the mass fraction of 30%, and the solution is cooled to room temperature for later use.
1kg of oil slurry is taken and preheated to 100 ℃, 100mg of the oil slurry viscosity modifier solution and 400mg of the oil slurry settling agent are added, after uniform mixing, the mixture is kept stand and settled for 24 hours at 100 ℃, then the upper layer of clarified oil slurry is taken, and the ash content is measured according to the method specified in the national standard GB/T508-85 Petroleum products Ash measuring method. The slurry viscosity modifier only, the slurry settling agent only and the slurry without any additive are treated by the same method to be used as a contrast test.
(3) Results of the experiment
The results of the evaluation of the effect of the slurry viscosity modifier on the deliming effect of the slurry are shown in Table 1.
TABLE 1 Effect of oil slurry viscosity modifier on the deliming Effect of oil slurries
As can be seen from the data in Table 1, the slurry oil hardly settles in the high temperature sedimentation treatment due to the high viscosity, and the effect is not obvious even if the slurry oil sedimentation agent is added. After the oil slurry viscosity modifier prepared by the invention is added, more than 15% of ash content can be naturally settled, and after the oil slurry viscosity modifier and the oil slurry settling agent are compounded, the ash removal rate can reach 95%, and the ash content of the treated oil slurry is below 0.02%, so that the subsequent use requirements of most oil slurries can be met.
Claims (5)
1. The oil slurry viscosity modifier is characterized by being a reaction product of polyamine and dibasic acid, and having a chemical structural formula as follows:
in the formula, R1Is alkyl chain or alkyl chain containing secondary amino structure, R2Is an alkyl chain of C2-C10.
2. A method for preparing the slurry viscosity modifier of claim 1, comprising the steps of:
1) dissolving polyamine in dimethylbenzene, adding dibasic acid in batches, and refluxing and stirring for 2-4 hours at 80-120 ℃ to form ammonium carboxylate; the molar ratio of the polyamine to the dibasic acid is 1: 1;
2) and (3) carrying out reduced pressure distillation at the temperature of 140-180 ℃ for 4-8 h to remove water and solvent xylene, and dehydrating ammonium carboxylate to form an amido bond, thereby finally obtaining a yellow viscous product.
3. The method of claim 2, wherein the polyamine is a C2-C12 aliphatic diamine or polyene polyamine.
4. The method according to claim 3, wherein the polyamine is ethylenediamine, hexamethylenediamine, diethylenetriamine, or triethylenetetramine.
5. The method according to claim 3, wherein the dibasic acid is an aliphatic dibasic acid having a carbon number of 2-10.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011570944.4A CN112812816B (en) | 2020-12-26 | 2020-12-26 | Oil slurry viscosity modifier and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011570944.4A CN112812816B (en) | 2020-12-26 | 2020-12-26 | Oil slurry viscosity modifier and preparation method thereof |
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| Publication Number | Publication Date |
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| CN112812816A true CN112812816A (en) | 2021-05-18 |
| CN112812816B CN112812816B (en) | 2022-12-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117363374A (en) * | 2023-11-24 | 2024-01-09 | 中海油天津化工研究设计院有限公司 | Deliming agent for oil slurry in alkali catalytic system and its application, method for removing solid particles in oil slurry |
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|---|---|---|---|---|
| CN117363374A (en) * | 2023-11-24 | 2024-01-09 | 中海油天津化工研究设计院有限公司 | Deliming agent for oil slurry in alkali catalytic system and its application, method for removing solid particles in oil slurry |
| CN117363374B (en) * | 2023-11-24 | 2025-10-28 | 中海油天津化工研究设计院有限公司 | Deashing agent for alkali-catalyzed slurry oil and its application, and method for removing solid particles in slurry oil |
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| CN112812816B (en) | 2022-12-30 |
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