CN101386791B - Transformer oil base oil and preparation method and applications thereof - Google Patents
Transformer oil base oil and preparation method and applications thereof Download PDFInfo
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- CN101386791B CN101386791B CN200810226046XA CN200810226046A CN101386791B CN 101386791 B CN101386791 B CN 101386791B CN 200810226046X A CN200810226046X A CN 200810226046XA CN 200810226046 A CN200810226046 A CN 200810226046A CN 101386791 B CN101386791 B CN 101386791B
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Abstract
The invention discloses base oil of transformer oil and a preparation method as well as application thereof. The preparation method for the base oil of the transformer oil comprises the following steps: 1) performing furfural refining on QHD32-6 common cut 2 distillate oil to obtain refined oil, and obtaining furfural removed refined oil after removing furfural; and 2) adding clay to the furfural removed refined oil for clay refining to obtain the base oil of the transformer oil. The preparation method widens raw material source of the base oil of the domestic transformer oil, and can provide brand-new base oil of high-grade No. 45 transformer oil for the market. In addition, the method has the advantages of simple technological process flow, mild operating conditions, and high yield of target objects; and the base oil of the transformer oil has wide market application space.
Description
Technical field
The present invention relates to a kind of transformer oil base oil and preparation method thereof and its application.
Background technology
Transformer oil is meant oil-filled electricinstallations such as being used for X-former, reactor, mutual inductor, sleeve pipe, oil switch, plays one type of X-former oil product of insulation, cooling and arc extinguishing effect.The use properties of transformer oil there is the requirement of three aspects: 1. good physicals; 2. good electric property; 3. good oxidative stability.
Transformer oil base oil is a raw material of producing transformer oil.The performance of transformer oil depends on the performance of transformer oil base oil to a great extent.Usually, paraffinic base transformer oil base oil pour point is high, be prone to oxidation and generate a large amount of acidic cpds, and aromaticity content is few, comes with some shortcomings at aspects such as life-span of transformer oil, anti-oxidant, anti-gassings.And the naphthenic base transformer oil base oil can satisfy requirements such as the insulation, cooling of transformer oil, again can long-term stable operation, therefore become generally acknowledged transformer oil optimal selection.
At present, the naphthenic base crude resource of China mainly concentrates on joyful mountain range of Xinjiang Jiu Qu, the Liaohe River and Bohai Sea Gulf three big blocks, and the raw material that is used to produce transformer oil base oil is that mountain range crude oil is liked in the Xinjiang Jiu Qu crude oil and the Liaohe River.Wherein, at home and abroad share of market is higher to utilize the naphthenic base transformer oil base oil of Xinjiang Jiu Qu crude production, and effect is better.And joyful mountain range, Liaohe River crude oil reduces and quality variation along with output, can not be as the stable resource of producing transformer oil.Along with the continuous growth of the domestic transformer oil market requirement, open up other suitable transformer oil raw materials for production, realize that transformer oil domesticizes significantly, have very big realistic meaning.
The production technique of transformer oil base oil develops along with the development of oil refining process.Be the earliest with naphthenic base crude as raw material, adopt sulfuric acid-clay-filtered explained hereafter transformer oil base oil, but this method cost is high, yield is low, treatment capacity is little, the most important thing is to produce a large amount of acid sludge contaminate environment.
Summary of the invention
The purpose of this invention is to provide a kind of transformer oil base oil and preparation method thereof and its application.
The preparation method of transformer oil base oil provided by the invention comprises the steps:
1) the normal two wires of QHD32-6 distillate is carried out furfural treatment, obtains treated oil, remove furfural after, obtain engaging aldehyde refinement oil;
2) in engaging aldehyde refinement oil, add carclazyte, carry out clay-filtered;
Obtain transformer oil base oil.
The normal two wires of said QHD32-6 distillate can directly be bought and obtain, and can be that raw material carries out air distillation and obtains with Bohai Sea Gulf naphthenic base crude QHD32-6 also.During air distillation, can adopt following condition: the atmospheric pressure kiln temperature out is 365 ℃, and normal two wires boiling range (2%～97%) is 280～350 ℃.
In the said step 1), the mass ratio of furfural and the normal two wires of said QHD32-6 distillate is (1.5～3.0): 1; The reaction conditions of said furfural treatment is: tower top temperature is 70-100 ℃, and column bottom temperature is 40-70 ℃.
In the said step 1), the mass ratio of furfural and the normal two wires of said QHD32-6 distillate is preferably 1.8:1; The reaction conditions of said furfural treatment is preferably: tower top temperature is 80 ℃, and column bottom temperature is 50 ℃.
In the said step 1); The said furfural of removing is that treated oil is carried out underpressure distillation; The condition of underpressure distillation is 0～2kpa, 120～130 ℃, and the condition optimization of underpressure distillation is: 0.1～2kpa, 120～130 ℃, the condition of underpressure distillation most preferably is 1kpa, 125 ℃.
Said step 2) in, the add-on of carclazyte is 5～12% (mass percents); Said clay-treated reaction conditions is: 120-160 ℃, and 30～60min.
Said step 2) in, the add-on of carclazyte is preferably 8% (mass percent); Said clay-treated reaction conditions is preferably: 140 ℃, and 45min.
The transformer oil base oil that said method prepares also belongs to protection scope of the present invention.
The performance perameter of transformer oil provided by the invention is seen table 1.
The performance perameter of table 1 transformer oil provided by the invention
Method technical process provided by the invention is simple to operate, mild condition, and the target product yield is high.Transformer oil base oil low-temperature performance of the present invention good (condensation point-50～-70 ℃), of light color, electric property is excellent, has application market space widely.The present invention has widened domestic transformer oil base oil raw material sources, can brand-new high-grade 45# transformer oil base oil be provided for market.
Following embodiment is convenient to understand better the present invention, but does not limit the present invention.
Embodiment
Experimental technique among the following embodiment like no specified otherwise, is ordinary method.
The performance that detects QHD32-6 normal two wires distillate and transformer oil base oil all adopts the standard method of this area, and is specific as follows:
A. density: crude oil and liquid petroleum product density experiment chamber assay method, GB/T 1884-2000.
B. kinematic viscosity: petroleum products kinematic viscosimeter assay method and kinetic viscosity installation, GB/T 265-1988.
C. colourity: chromaticity of petroleum product assay method, SH/T 0168-1992.
D. condensation point: petroleum products questionable points assay method, GB/T 510-1983.
E. close flash point: petroleum products flashing test method (agar diffusion method of remaining silent), GB/T 261-1983 (1991).
F. alkali nitrogen content: petroleum products neutral and alkali N2 method, SH/T 0162-1992.
G. acid number: petroleum products determination of acid value method, GB/T 264-1983 (1991).
H. structural group is formed: petroleum base insulation oil carbon type is formed installation, SH/T 0725-2002.
I. dielectric loss: the measurement of liquid insulating material power frequency relative permittivity, dielectric dissipation factor and volume specific resistance, GB/T 5654-2007.
J. voltage breakdown: transformer oil voltage breakdown assay method, GB/T 507-2002.
K. aniline point: petroleum products aniline point assay method, GB/T 262-1988.
1. boiling range: petroleum products boiling range assay method, GB/T 255-1977 (1988).
The normal two wires of the QHD32-6 cut oil properties that is used as raw material in following examples is as shown in table 2.
The normal two wires of table 2 QHD32-6 cut oil properties
| Project | Parameter | Project | Parameter |
| Density (20 ℃), g/cm 3 | 0.9007 | Colourity | 0.6 |
| Flash-point (remaining silent), ℃ | 145 | Condensation point, ℃ | <—50 |
| Kinematic viscosity (40 ℃), mm 2/s | 10.29 | Acid number, mgKOH/g | 2.2 |
The preparation of embodiment 1, transformer oil base oil and Performance Detection
Test is provided with three repetitions, and performance test results is got the MV of three parts of product A.
One, the preparation of transformer oil base oil
1, furfural treatment
The normal two wires of above-mentioned QHD32-6 distillate is carried out furfural treatment, and the mass ratio of the normal two wires of furfural and QHD32-6 distillate is 1.5:1, and tower top temperature is 70 ℃, and column bottom temperature is 40 ℃, obtains treated oil.
Adopt distillation under vacuum to remove the furfural solvent in the treated oil, the condition of underpressure distillation is: 2kpa, 130 ℃ obtains engaging aldehyde refinement oil.
2, clay-filtered
Get carclazyte that treated oil adds 12% (mass percent) again at 160 ℃, carry out clay-filtered 30min under the condition of nitrogen protection, obtain transformer oil base oil after filtering out the carclazyte waste residue, its called after product A.
Two, the performance of transformer oil base oil
Each item performance index of product A are seen table 3.
The preparation of embodiment 2, transformer oil base oil and Performance Detection
Test is provided with three repetitions, and performance test results is got the MV of three parts of product B.
One, the preparation of transformer oil base oil
1, furfural treatment
The normal two wires of above-mentioned QHD32-6 distillate is carried out furfural treatment, and the mass ratio of the normal two wires of furfural and QHD32-6 distillate is 1.8:1, and tower top temperature is 80 ℃, and column bottom temperature is 50 ℃, obtains treated oil.
Adopt distillation under vacuum to remove the furfural solvent in the treated oil, the condition of underpressure distillation is: 1kpa, 125 ℃ obtains engaging aldehyde refinement oil.
2, clay-filtered
The carclazyte that in engaging aldehyde refinement oil, adds 8% (mass percent) carries out clay-filtered 45min at 140 ℃ under the condition of nitrogen protection, obtain transformer oil base oil after filtering out the carclazyte waste residue, with its called after product B.
Two, the performance of transformer oil base oil
Each item performance index of product B are seen table 3.
The preparation of embodiment 3, transformer oil base oil and Performance Detection
Test is provided with three repetitions, and performance test results is got the MV of three parts of products C.
One, the preparation of transformer oil base oil
1, furfural treatment
The normal two wires of above-mentioned QHD32-6 distillate is carried out furfural treatment, and the mass ratio of the normal two wires of furfural and QHD32-6 distillate is 3:1, and tower top temperature is 100 ℃, and column bottom temperature is 70 ℃, obtains treated oil.
Adopt distillation under vacuum to remove the furfural solvent in the treated oil, the condition of underpressure distillation is: 0.1kpa, 120 ℃ obtains engaging aldehyde refinement oil.
2, clay-filtered
The carclazyte that in engaging aldehyde refinement oil, adds 5% (mass percent) carries out clay-filtered 60min at 120 ℃ under the condition of nitrogen protection, obtain transformer oil base oil after filtering out the carclazyte waste residue, with its called after products C.
Two, the performance of transformer oil base oil
Each item performance index of products C are seen table 3.
Table 3 product each item Key Performance Indicator
Can know that by the data in the table 3 the product each item performance among three embodiment all satisfies the key index requirement of GB transformer oil product G B2536-90.Wherein, the product A yield among the embodiment 1 is the highest, up to 71%, and its C accordingly
AValue is also maximum, and aromaticity content is the highest, will be the most useful to the degassing property of transformer oil.Though and the products C yield among the embodiment 3 is low, refining depth is high, and colourity is best, and basic n content is minimum, and electric property is best, will be the most useful to the oxidation stability of transformer oil.
Claims (5)
1. the preparation method of a transformer oil base oil comprises the steps:
1) the normal two wires of QHD32-6 distillate is carried out furfural treatment, obtains treated oil, remove furfural after, obtain engaging aldehyde refinement oil; The mass ratio of furfural and the normal two wires of said QHD32-6 distillate is (1.5～3.0): 1; The reaction conditions of said furfural treatment is: tower top temperature is 70-100 ℃, and column bottom temperature is 40-70 ℃; The said furfural of removing is that said treated oil is carried out underpressure distillation, and the condition of underpressure distillation is: 0～2kpa, 120～130 ℃;
2) in engaging aldehyde refinement oil, add carclazyte, carry out clay-filtered; The add-on of carclazyte is 5～12% (mass percents); Said clay-treated reaction conditions is: 120-160 ℃, and 30～60min;
Obtain transformer oil base oil.
2. the method for claim 1, it is characterized in that: in the said step 1), the mass ratio of furfural and the normal two wires of said QHD32-6 distillate is 1.8: 1; The reaction conditions of said furfural treatment is: tower top temperature is 80 ℃, and column bottom temperature is 50 ℃.
3. the method for claim 1, it is characterized in that: removing furfural described in the step 1) is that said treated oil is carried out underpressure distillation, and the condition of underpressure distillation is: 1kpa, 125 ℃.
4. the method for claim 1, it is characterized in that: said step 2), the add-on of carclazyte is 8% (mass percent); Said clay-treated reaction conditions is: 140 ℃, and 45min.
5. the transformer oil base oil that arbitrary said method prepares in the claim 1 to 4.
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676215B (en) * | 2011-03-08 | 2014-06-04 | 中国石油天然气股份有限公司 | Method for improving gassing resistance of transformer oil and equipment for producing transformer oil |
| CN103305268A (en) * | 2012-03-09 | 2013-09-18 | 中国石油天然气股份有限公司 | Method for reducing condensation point of base oil of transformer oil |
| CN104130830B (en) * | 2014-07-02 | 2016-08-24 | 安徽吉思特智能装备有限公司 | A kind of nano aluminum nitride transformer oil adding suspension stabilizer and preparation method thereof |
| CN104130831B (en) * | 2014-07-02 | 2016-08-24 | 安徽吉思特智能装备有限公司 | A kind of composite nanoparticle transformer oil and preparation method thereof |
| CN104130824B (en) * | 2014-07-02 | 2016-08-17 | 安徽吉思特智能装备有限公司 | The anti-aging of a kind of nitrogen aluminum nanoparticles and etch-proof transformer oil and preparation method thereof |
| CN104130825B (en) * | 2014-07-02 | 2016-07-06 | 安徽吉思特智能装备有限公司 | A kind of antirust composite nanoparticle transformer oil high with insulating properties and preparation method thereof |
| CN104498086B (en) * | 2014-11-25 | 2016-09-07 | 宁波永润石化科技有限公司 | A kind of high acid value ocean readymade oil takes off acid treatment process |
| CN111171862A (en) * | 2020-01-17 | 2020-05-19 | 中国海洋石油集团有限公司 | Preparation method of heat conduction oil base oil |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1251382A (en) * | 1999-11-04 | 2000-04-26 | 中国石化集团武汉石油化工厂 | Improvement of electric refining method for lubricant base-oil denitrification process |
| CN1944583A (en) * | 2005-10-09 | 2007-04-11 | 涿州贝尔森生化科技发展有限公司 | Deacidifying process for lubricating oil base oil |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1251382A (en) * | 1999-11-04 | 2000-04-26 | 中国石化集团武汉石油化工厂 | Improvement of electric refining method for lubricant base-oil denitrification process |
| CN1944583A (en) * | 2005-10-09 | 2007-04-11 | 涿州贝尔森生化科技发展有限公司 | Deacidifying process for lubricating oil base oil |
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Effective date of registration: 20170221 Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee after: China National Offshore Oil Corporation Patentee after: China National Offshore Oil Corporation Patentee after: CNOOC Refining & Chemical Research Institute (Beijing) Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. 1414, No. Patentee before: China National Offshore Oil Corporation Patentee before: China National Offshore Oil and Gas Development and Utilization Co., Ltd. |
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Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: China National Offshore Oil Corporation Patentee after: China Offshore Oil Group Co., Ltd. Co-patentee after: CNOOC Refining & Chemical Research Institute (Beijing) Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: China National Offshore Oil Corporation Patentee before: China National Offshore Oil Corporation Co-patentee before: CNOOC Refining & Chemical Research Institute (Beijing) Co., Ltd. |
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