CN101386793A - 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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- CN101386793A CN101386793A CNA200810226060XA CN200810226060A CN101386793A CN 101386793 A CN101386793 A CN 101386793A CN A200810226060X A CNA200810226060X A CN A200810226060XA CN 200810226060 A CN200810226060 A CN 200810226060A CN 101386793 A CN101386793 A CN 101386793A
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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 of 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; 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 its application.
Background technology
Transformer oil is meant oil-filled electric installations such as being used for transformer, reactor, mutual inductor, sleeve pipe, oil switch, plays a class transformer 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 height, 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 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 cycloalkyl 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 height, 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) engaging aldehyde refinement oil is carried out denitrogenation, remove the denitrification slag, obtain denitrification refining oil;
3) in denitrification refining oil, add carclazyte, carry out clay-filtered;
Obtain transformer oil base oil;
The normal two wires of described 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 described step 1), the quality of furfural and the normal two wires of described QHD32-6 distillate is comparable to be (1.5～3.0): 1; The reaction conditions of described furfural treatment can be: tower top temperature is 70-100 ℃, and column bottom temperature is 40-70 ℃.The mass ratio of furfural and the normal two wires of described QHD32-6 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 ℃.
In the described step 1), the described 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 ℃.
Described step 2) in, can add denitrfying agent.Any commercially available denitrfying agent all can adopt, 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), is preferably 0.2% (mass percent); The condition of described denitrification reaction can be: 80-100 ℃, 30～60min; The condition optimization of described denitrification reaction is; 90 ℃, 45min.
In the described step 3), the add-on of carclazyte can be 2～5% (mass percents); Described clay-treated reaction conditions can be: 120-140 ℃, and 30～60min.The add-on of carclazyte is preferably 3% (mass percent); Described clay-treated reaction conditions is preferably: 130 ℃, 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 target product yield height, energy consumption is low, and the carclazyte residue is few.Transformer oil base oil low temperature performance excellent of the present invention, flowing property is good, and (30 ℃ of kinematic viscosity are 746～925mm
2/ s), electric property excellence (dielectric dissipation factor is 0.00013～0.00047, and voltage breakdown is 45～72) has application space, market widely.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 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 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: 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 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: transformer oil voltage breakdown assay method, GB/T 507-2002.
K. aniline point: petroleum products aniline point assay method, GB/T 262-1988.
L. boiling range: petroleum products boiling range assay method, GB/T255-1977 (1988).
Used denitrfying agent is the WSQ-2 type denitrfying agent that Hubei gold crane chemical industry company limited produces in following examples.
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 mean value 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 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 adds 0.3% (mass percent) in engaging aldehyde refinement oil, 80 ℃ of denitrogenation 60min remove the denitrification slag then, obtain denitrification refining oil.
3, clay-filtered
The carclazyte that adds 5% (mass percent) in denitrification refining oil at 120 ℃, 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 product A.
Two, the performance of transformer oil base oil
Every performance index of product A see 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 mean value 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 furfural solvent in the treated oil, the condition of underpressure distillation is: 1kpa, 125 ℃ obtains engaging aldehyde refinement oil.
2, denitrogenation
The denitrfying agent that adds 0.2% (mass percent) in engaging aldehyde refinement oil, 90 ℃ of denitrogenation 45min remove the denitrification slag then, obtain denitrification refining oil.
3, clay-filtered
The carclazyte that adds 3% (mass percent) in denitrification refining oil at 130 ℃, 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 product B.
Two, the performance of transformer oil base oil
Every performance index of product B see 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 mean value 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 3.0:1, and tower top temperature is 100 ℃, and column bottom temperature is 70 ℃, 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 adds 0.1% (mass percent) in engaging aldehyde refinement oil, 100 ℃ of denitrogenations 30 minutes remove the denitrification slag then, obtain denitrification refining oil.
3, clay-filtered
The carclazyte that adds 2% (mass percent) in denitrification refining oil at 140 ℃, carried out under the condition of nitrogen protection clay-filtered 30 minutes, obtained 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
Every performance index of products C see Table 3.
The every Key Performance Indicator of table 3 product
By the data in the table 3 as can be known, the product performance among three embodiment are all better, especially condensation point well below 45# transformer oil GB GB2536-90 require=45 ℃.Wherein, the product A yield among the embodiment 1 is the highest, up to 75%, 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, the refining depth height, colourity is best, and basic n content is minimum, and electrical property the best will be the most useful to the oxidation stability of transformer oil.
Claims (10)
1, a kind of preparation method of 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;
2) engaging aldehyde refinement oil is carried out denitrogenation, remove the denitrification slag, obtain denitrification refining oil;
3) in denitrification refining oil, add carclazyte, carry out clay-filtered;
Obtain transformer oil base oil.
2, the method for claim 1 is characterized in that: in the described step 1), the mass ratio of furfural and the normal two wires of described QHD32-6 distillate is (1.5～3.0): 1; The reaction conditions of described furfural treatment is: tower top temperature is 70-100 ℃, and column bottom temperature is 40-70 ℃.
3, method as claimed in claim 2 is characterized in that: in the described step 1), the mass ratio of furfural and the normal two wires of described QHD32-6 distillate is 1.8:1; The reaction conditions of described furfural treatment is: tower top temperature is 80 ℃, and column bottom temperature is 50 ℃.
4, as arbitrary described method in the claim 1 to 3, it is characterized in that: removing furfural described in the step 1) is that treated oil is carried out underpressure distillation, and the condition of underpressure distillation is: 0～2kpa, 120～130 ℃.
5, method as claimed in claim 4 is characterized in that: removing furfural described in the step 1) is that treated oil is carried out underpressure distillation, and the condition of underpressure distillation is: 1kpa, 125 ℃.
6, as arbitrary described method in the claim 1 to 5, it is characterized in that: add denitrfying agent described step 2).
7, method as claimed in claim 6 is characterized in that: the add-on of described denitrfying agent is 0.1-0.3% (mass percent), preferred 0.2% (mass percent); The reaction conditions of described denitrification reaction is: 80-100 ℃, and 30-60min; The reaction conditions of described denitrification reaction is preferably: 90 ℃, and 45min.
8, as arbitrary described method in the claim 1 to 7, it is characterized in that: in the described step 3), the add-on of carclazyte is 2～5% (mass percents); Described clay-treated reaction conditions is: 120-140 ℃, and 30～60min.
9, method as claimed in claim 8 is characterized in that: in the described step 3), the add-on of carclazyte is 3% (mass percent); Described clay-treated reaction conditions is: 130 ℃, and 45min.
10, the transformer oil base oil that arbitrary described method prepares in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA200810226060XA CN101386793A (en) | 2008-11-05 | 2008-11-05 | Transformer oil base oil and preparation method and applications thereof |
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| CNA200810226060XA CN101386793A (en) | 2008-11-05 | 2008-11-05 | Transformer oil base oil and preparation method and applications thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676215A (en) * | 2011-03-08 | 2012-09-19 | 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 |
| CN105087059A (en) * | 2015-09-01 | 2015-11-25 | 中国海洋石油总公司 | Anti-gassing component of transformer oil and preparation method of component |
| CN105462614A (en) * | 2015-11-27 | 2016-04-06 | 中国海洋石油总公司 | Transformer oil base oil with low freezing point and high naphthenic carbon content and preparation method of transformer oil base oil |
| 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 |
-
2008
- 2008-11-05 CN CNA200810226060XA patent/CN101386793A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676215A (en) * | 2011-03-08 | 2012-09-19 | 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 |
| 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 |
| CN105087059A (en) * | 2015-09-01 | 2015-11-25 | 中国海洋石油总公司 | Anti-gassing component of transformer oil and preparation method of component |
| CN105462614A (en) * | 2015-11-27 | 2016-04-06 | 中国海洋石油总公司 | Transformer oil base oil with low freezing point and high naphthenic carbon content and preparation method of transformer oil base oil |
| 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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Application publication date: 20090318 |