CN101386792B - 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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- CN101386792B CN101386792B CN 200810226047 CN200810226047A CN101386792B CN 101386792 B CN101386792 B CN 101386792B CN 200810226047 CN200810226047 CN 200810226047 CN 200810226047 A CN200810226047 A CN 200810226047A CN 101386792 B CN101386792 B CN 101386792B
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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 SZ36-1 common cut 2 distillate oil to obtain refined oil, and obtaining furfural removed refined oil after removing the furfural; 2) performing denitrification on the furfural removed refined oil, removing nitride slag of the furfural removed refined oil, and obtaining denitrogenized refined oil; and 3) adding clay to the denitrogenized 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, 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 application.
Background technology
Transformer oil refers to play a class transformer oil product of insulation, cooling and arc extinguishing effect for oil-filled electric equipments such as transformer, reactor, mutual inductor, sleeve pipe, oil switchs.The use properties of transformer oil there is the requirement of three aspects: 1. good physicals; 2. good electric property; 3. good oxidation stability.
Transformer oil base oil is the 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, and easily oxidation generates 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 cycloalkyl transformer oil base oil can satisfy the 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 Xinjiang Jiu Qu, Liaohe Huanxiling and Bohai Sea Gulf three large blocks, is Xinjiang Jiu Qu crude oil and Liaohe Huanxiling crude oil for the production of the raw material of transformer oil base oil.Wherein, at home and abroad share of market is higher to utilize the cycloalkyl transformer oil base oil of Xinjiang Jiu Qu crude production, and effect is better.And Liaohe Huanxiling crude oil is along with yield reducation and quality variation, can not be as the stable resources of producing transformer oil.Along with the continuous growth of field, Domestic Transformers oil market demand, open up other suitable transformer oil raw materials for production, realize that transformer oil significantly domesticizes, have very large realistic meaning.
The production technique of transformer oil base oil is 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 the 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 application.
The preparation method of transformer oil base oil provided by the invention comprises the steps:
1) the normal two wires of SZ36-1 distillate is carried out furfural treatment, obtains treated oil, remove furfural after, obtain engaging aldehyde refinement oil;
2) engaging aldehyde refinement oil is carried out denitrogenation, except the denitrification slag, obtain denitrification refining oil;
3) add carclazyte in the denitrification refining oil, carry out clay-filtered;
Obtain transformer oil base oil.
The normal two wires of described SZ36-1 distillate can directly be bought and obtain, and also can obtain as raw material carries out air distillation take Bohai Sea Gulf naphthenic base crude SZ36-1.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 ℃.
Described step 1) in, the mass ratio of furfural and the normal two wires of described SZ36-1 distillate can be (1.5～2.2): 1; The reaction conditions of described furfural treatment can be: tower top temperature is 70～90 ℃, and column bottom temperature is 40～60 ℃.The mass ratio of furfural and the normal two wires of described SZ36-1 distillate is preferably 1.8:1; The reaction conditions of described furfural treatment is preferably: tower top temperature is 80 ℃, and column bottom temperature is 50 ℃.
Described step 1) in, the described furfural of removing is that treated oil is carried out underpressure distillation, and the condition of underpressure distillation can be: 0～2kpa, 120～130 ℃.The condition optimization of described underpressure distillation is: 0.1～2kpa, 120～130 ℃.The condition of described underpressure distillation most preferably is 1kpa, 125 ℃.
Described step 2) in, adds denitrfying agent.Any commercially available denitrfying agent all can use, such as the WSQ-2 type denitrfying agent of Hubei gold crane chemical industry company limited production.Described step 2) in, the add-on of described denitrfying agent can be 0.1-0.3% (mass percent); The condition of described denitrification reaction can be: 70-90 ℃, and 30～60min.The add-on of denitrfying agent is preferably 0.2% (mass percent); The condition optimization of described denitrification reaction is: 80 ℃, and 45min.
Described step 3) in, the add-on of carclazyte can be 2～5% (mass percents); Described clay-treated reaction conditions can be: 130-150 ℃, and 30～60min.The add-on of carclazyte is preferably 3% (mass percent); Described clay-treated reaction conditions is preferably: 140 ℃, and 45min.
The transformer oil base oil that described method prepares also belongs to protection scope of the present invention.
The performance perameter of transformer oil provided by the invention sees Table 1.
The performance perameter of table 1 transformer oil base 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, and the carclazyte residue is few.Transformer oil base oil density of the present invention is 876.3～881.4Kg/m
3, acid number is 0.002～0.003, rotary oxygen bomb is up to 220～239min, and low temperature performance excellent (condensation point＜-50 ℃), flowing property is good, and (30 ℃ of kinematic viscosity are 521.31～771.07mm
2/ s), dielectric dissipation factor very little (0.00034～0.00105) has widely application space, market.The present invention has widened domestic transformer oil base oil raw material sources, can provide brand-new high-grade 45# transformer oil base oil 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 if no special instructions, is ordinary method.
The performance that detects SZ36-1 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 computing method, 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: Flash Point for Petroleum Products assay method (agar diffusion method of remaining silent), GB/T 261-1983 (1991).
F. basic nitrogen: petroleum products neutral and alkali N2 method, SH/T0162-1992.
G. acid number: petroleum product acid value measuring method, GB/T 264-1983 (1991).
H. structural group forms: petroleum base insulation oil carbon type forms computing method, 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: insulating oil breakdown voltage assay method, GB/T 507-2002.
K. aniline point: petroleum products aniline point assay method, GB/T 262-1988.
1. boiling range: petroleum products Measurement of distilled process method, GB/T 255-1977 (1988).
M. rotary oxygen bomb: lubricating oil oxidation stability assay method (rotary oxygen bomb method), SH/T 0193-1992.
Used denitrfying agent is the WSQ-2 type denitrfying agent that Hubei gold crane chemical industry company limited produces in below implementing.
The performance perameter that is used as the normal two wires of the SZ36-1 distillate of raw material in following examples sees Table 2.
The normal two wires of table 2 SZ36-1 cut oil properties
The preparation of embodiment 1, transformer oil base oil and Performance Detection
One, the preparation of transformer oil base oil
Test arranges three repetitions, and performance test results is got the mean value of three parts of products A.
1, furfural treatment
The normal two wires of SZ36-1 distillate is carried out furfural treatment, and the mass ratio of the normal two wires of furfural and SZ36-1 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 furfural solvent in the treated oil, the condition of underpressure distillation is: 1kpa, 125 ℃ obtains engaging aldehyde refinement oil.
2, the denitrfying agent that in engaging aldehyde refinement oil, adds 0.2% (mass percent), 80 ℃ of denitrogenation 45min, the separating off nitrogen slag obtains denitrification refining oil.。
3, clay-filtered
The carclazyte that adds 3% (mass percent) in denitrification refining oil at 140 ℃, carries out clay-filtered 45min under the condition of nitrogen protection, obtain transformer oil base oil after filtering out the carclazyte waste residue, with its called after products A.
Two, the performance of transformer oil base oil
The property indices of products A sees Table 3.
The preparation of embodiment 2, transformer oil base oil and Performance Detection
One, the preparation of transformer oil base oil
Test arranges three repetitions, and performance test results is got the mean value of three parts of product B.
1, furfural treatment
The normal two wires of SZ36-1 distillate is carried out furfural treatment, and the mass ratio of the normal two wires of furfural and SZ36-1 distillate is 2.2:1, and tower top temperature is 90 ℃, and column bottom temperature is 60 ℃, obtains treated oil.
Adopt distillation under vacuum to remove furfural solvent in the treated oil, the condition of underpressure distillation is: 0.1kpa, 120 ℃ obtains engaging aldehyde refinement oil.
2, denitrogenation
The denitrfying agent that in engaging aldehyde refinement oil, adds 0.1% (mass percent), 90 ℃ of denitrogenation 30min, the separating off nitrogen slag obtains denitrification refining oil.
3, clay finishing
The carclazyte that adds 2% (mass percent) in denitrification refining oil at 150 ℃, carries out clay-filtered 30min 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
The property indices of product B sees Table 3.
The preparation of embodiment 3, transformer oil base oil and Performance Detection
One, the preparation of transformer oil base oil
Test arranges three repetitions, and performance test results is got the mean value of three parts of products C.
1, furfural treatment
The normal two wires of SZ36-1 distillate is carried out furfural treatment, and the mass ratio of the normal two wires of furfural and SZ36-1 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 furfural solvent in the treated oil, the condition of underpressure distillation is: 2kpa, 130 ℃ obtains engaging aldehyde refinement oil.
2, denitrogenation
The denitrfying agent that in engaging aldehyde refinement oil, adds 0.3% (mass percent), 70 ℃ of denitrogenation 60min, the separating off nitrogen slag obtains denitrification refining oil.
3, clay-filtered
The carclazyte that adds 5% (mass percent) in denitrification refining oil at 130 ℃, carries out clay-filtered 60min 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
The property indices of products C sees Table 3.
The every Key Performance Indicator of table 3 product
By the data in the table 3 as can be known, the product properties among three embodiment is all better, and condensation point is lower than-45 ℃ that 45# transformer oil GB GB2536-90 requires.Wherein, the products C yield among the embodiment 3 is the highest, up to 70%, and corresponding its C
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 product B yield among the embodiment 2 is low, refining depth is high, electric property best (dielectric dissipation factor is minimum, and voltage breakdown is the highest), oxidation stability best (rotary oxygen bomb is up to 239min).
Claims (7)
1. the preparation method of a transformer oil base oil comprises the steps:
1) the normal two wires of SZ36-1 distillate is carried out furfural treatment, obtains treated oil, remove furfural after, obtain engaging aldehyde refinement oil;
2) add denitrfying agent engaging aldehyde refinement oil is carried out denitrogenation, except the denitrification slag, obtain denitrification refining oil;
3) add carclazyte in the denitrification refining oil, carry out clay-filtered;
Obtain transformer oil base oil;
Wherein, step 1) in, the mass ratio of furfural and the normal two wires of described SZ36-1 distillate is (1.5～2.2): 1; The reaction conditions of described furfural treatment is: tower top temperature is 70-90 ℃, and column bottom temperature is 40-60 ℃;
Step 2) in, the add-on of described denitrfying agent is 0.1-0.3% by mass percentage; The condition of described denitrification reaction is: 70-90 ℃, and 30～60min;
Step 3) in, the add-on of carclazyte is 2～5% by mass percentage; Described clay-treated reaction conditions is: 130-150 ℃, and 30～60min.
2. the method for claim 1, it is characterized in that: described step 1), the mass ratio of furfural and the normal two wires of described SZ36-1 distillate is 1.8: 1; The reaction conditions of described furfural treatment is: tower top temperature is 80 ℃, and column bottom temperature is 50 ℃.
3. the method for claim 1 is characterized in that: step 1) in, the described furfural of removing is that treated oil is carried out underpressure distillation, the condition of underpressure distillation is: 0～2kpa, 120～130 ℃.
4. method as claimed in claim 3 is characterized in that: the condition of described underpressure distillation is 1kpa, 125 ℃.
5. the method for claim 1, it is characterized in that: described step 2), the add-on of denitrfying agent is 0.2% by mass percentage; The condition of described denitrification reaction is: 80 ℃, and 45min.
6. the method for claim 1, it is characterized in that: described step 3), the add-on of carclazyte is 3% by mass percentage; Described clay-treated reaction conditions is: 140 ℃, and 45min.
7. the transformer oil base oil that arbitrary described method prepares in the claim 1 to 6.
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102086419B (en) * | 2009-12-03 | 2013-07-31 | 中国石油天然气股份有限公司 | Base oil of converter transformer insulation oil and preparation method thereof |
| 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 lowering condensation point of base oil of transformer oil |
| CN103789019B (en) * | 2012-11-05 | 2015-05-13 | 中国石油化工股份有限公司 | Method for hydrogenation of medium-low temperature coal tar to produce transformer oil base oil |
| CN105087059B (en) * | 2015-09-01 | 2017-02-01 | 中国海洋石油总公司 | Anti-gassing component of transformer oil and preparation method of component |
| CN105602686A (en) * | 2015-12-30 | 2016-05-25 | 安徽凯奥润滑油科技有限公司 | Low-dielectric-loss transformer oil and preparation method thereof |
| CN110240926B (en) * | 2019-06-26 | 2021-05-18 | 武汉纺织大学 | Method for adsorption treatment of base oil and regeneration and cyclic utilization of silica gel |
| 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 |
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| CN1177626A (en) * | 1997-09-10 | 1998-04-01 | 中国石油化工总公司 | Denitrification process for base oil of lubricating oil |
| 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 (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1177626A (en) * | 1997-09-10 | 1998-04-01 | 中国石油化工总公司 | Denitrification process for base oil of lubricating oil |
| 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: 20170224 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. |