CN114395436A - Preparation method of plant transformer oil - Google Patents
Preparation method of plant transformer oil Download PDFInfo
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- CN114395436A CN114395436A CN202111667690.2A CN202111667690A CN114395436A CN 114395436 A CN114395436 A CN 114395436A CN 202111667690 A CN202111667690 A CN 202111667690A CN 114395436 A CN114395436 A CN 114395436A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 29
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000001914 filtration Methods 0.000 claims abstract description 20
- 230000000994 depressogenic effect Effects 0.000 claims abstract description 15
- 239000002808 molecular sieve Substances 0.000 claims abstract description 15
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000004202 carbamide Substances 0.000 claims abstract description 12
- 235000013877 carbamide Nutrition 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 10
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 10
- 239000002244 precipitate Substances 0.000 claims abstract description 7
- 239000003921 oil Substances 0.000 claims description 87
- 235000019198 oils Nutrition 0.000 claims description 87
- 239000000047 product Substances 0.000 claims description 33
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 28
- 239000008158 vegetable oil Substances 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 19
- 235000013311 vegetables Nutrition 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 13
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical group CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 10
- 235000010354 butylated hydroxytoluene Nutrition 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims 2
- 239000002253 acid Substances 0.000 abstract description 5
- 239000012535 impurity Substances 0.000 abstract description 5
- 239000002245 particle Substances 0.000 abstract description 2
- 239000002480 mineral oil Substances 0.000 description 4
- 235000010446 mineral oil Nutrition 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000009874 alkali refining Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M177/00—Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/40—Fatty vegetable or animal oils
- C10M2207/401—Fatty vegetable or animal oils used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/02—Pour-point; Viscosity index
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/14—Electric or magnetic purposes
- C10N2040/16—Dielectric; Insulating oil or insulators
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Organic Insulating Materials (AREA)
Abstract
The invention discloses a preparation method of plant transformer oil, which comprises the steps of adding carbamide, stirring and reacting under certain air pressure to generate precipitates, effectively reducing the acid value, adding an antioxidant and a pour point depressant, removing particle impurities by a molecular sieve, filtering water and the like.
Description
Technical Field
The invention relates to the technical field of transformer oil, in particular to a preparation method of plant transformer oil.
Background
At present, mineral oil and synthetic oil are mainly used as transformer insulating oil. However, mineral oil has a low ignition point and poor biodegradability, and is a non-renewable resource; synthetic oil is relatively high in cost, can not be completely biodegraded, even contains toxicity, and is limited to be used in certain occasions. The vegetable oil can replace non-renewable mineral oil in the aspects of insulating property and environmental protection, can replace synthetic oil in the aspects of considering cost, biodegradability, raw material sources and the like, and is novel green transformer oil without negative influence on the ecological environment. The vegetable oil has the characteristic of higher ignition point, the ignition point is higher than 320 ℃, and the vegetable oil is a renewable resource, can be almost completely biodegraded, has the electrical property equivalent to that of mineral oil, has stronger water absorption, and is favorable for delaying the aging speed of the insulating paper. Vegetable transformer oil (vegetable transformer oil) is a power term published in 2020.
However, the conventional vegetable transformer oil needs to be obtained by refining the vegetable oil through alkali refining, decoloring, deodorizing and the like, and in the conventional treatment process, a large amount of pure water is needed for alkali refining and primary and secondary water washing, so that excessive industrial wastewater is generated, and resources are wasted; moreover, the obtained dielectric loss factor indexes of the transformer oil are very unstable, and in the actual operation of the transformer oil, the volume resistivity of the plant transformer oil is often reduced, the acid value is increased, the breakdown resistance is reduced, the moisture is increased and the like, so that a simple and feasible production process is urgently needed to improve the indexes of the plant transformer oil so as to reach the standard of safe operation of the transformer.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a preparation method of plant transformer oil.
The invention provides a preparation method of plant transformer oil, which comprises the following steps:
s1, heating the vegetable oil to 20-30 ℃, introducing dry air, stirring uniformly under a certain air pressure, adding carbamide, continuing stirring, and filtering to remove precipitates to obtain an intermediate oil product A;
s2, adding an antioxidant and a pour point depressant into the intermediate oil product A, and heating and uniformly stirring to obtain an intermediate oil product B;
s3, adding a molecular sieve into the intermediate oil product B, introducing dry air, fully heating and stirring under a certain air pressure, and then filtering to remove the molecular sieve to obtain an intermediate oil product C;
and S4, filtering the intermediate oil product C to remove water, thereby obtaining the vegetable transformer oil.
Preferably, in S1, the vegetable oil is heated to 20-30 deg.C, dried air is introduced, stirring is carried out at 0.3-0.5MPa for 10-20min, and then carbamide is added, and stirring is continued for 50-60 min. The purpose of S1 is to reduce the acid number of the plant transformer oil.
Preferably, in S1, the mass of carbamide is 0.1-0.2% of the mass of vegetable oil.
Preferably, in S2, the intermediate oil product A is heated to 50-60 ℃, then the antioxidant is added and stirred for 20-40min, then the pour point depressant is added and stirred for 40-60min, and the intermediate oil product B is obtained. The purpose of S2 is to improve the oxidation resistance of the plant transformer oil and make it have low pour point.
Preferably, in S2, the antioxidant accounts for 0.2-0.3% of the vegetable oil by mass, and the pour point depressant accounts for 0.06-0.8% of the vegetable oil by mass.
The specific kinds of the antioxidant and pour point depressant of the present invention are not particularly limited. Preferably, the antioxidant is 2, 6-di-tert-butyl-4-methylphenol, 2, 6-di-tert-butyl-p-cresol or a combination thereof, and the pour point depressant is a T6012 model manufactured by Shandong Kun chemical company.
Preferably, in S3, heating and stirring at 50-60 deg.C for 40-60min under 0.3-0.5 MPa. The purpose of S3 is to adsorb and remove trace ionizable dissolved impurities or colloid particles in the vegetable transformer oil and improve the volume resistivity.
Preferably, in S3, the mass of the molecular sieve is 1-2% of the mass of the vegetable oil.
Preferably, in S4, the filtration is carried out by using a filter element with the diameter of 1-3 μm and the filtration temperature of 60-70 ℃. The purpose of S4 is to reduce the micro-water content in the vegetable transformer oil and simultaneously improve the voltage resistance value of the transformer oil.
The plant transformer oil is prepared by the preparation method.
The invention has the following beneficial effects:
the invention relates to a preparation process method for improving and improving the electrical performance of plant transformer oil, which can generate precipitates to effectively reduce the acid value by adding carbamide and stirring the carbamide for reaction under certain air pressure, thereby avoiding complex treatment processes of alkali refining, primary secondary washing and the like in the conventional process, having simple production process and low production cost, and the generated waste can be directly used as agricultural fertilizer without adverse effect on the environment; in addition, the molecular sieve is used for replacing activated clay for treatment, so that the molecular sieve can be recycled, and the cost is saved. Moreover, the vegetable transformer oil treated by the process can improve and improve the electrical performance, ensure the stability of the electrical performance, improve the volume resistivity, reduce the micro-water content, particularly improve the stable breakdown voltage, reduce the acid value index, enhance the oxidation resistance, reduce the pour point and other performances, and improve the stability and the applicability of the vegetable transformer oil.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
Example 1
A preparation method of plant transformer oil comprises the following steps:
s1, heating the vegetable oil to 25 ℃, introducing dry air, stirring for 15min under the air pressure of 0.4MPa, adding carbamide, continuously stirring for 55min, and filtering by a plate oil filter to remove precipitates to obtain an intermediate oil product A;
s2, heating the intermediate oil product A to 55 ℃, adding 2, 6-di-tert-butyl-4-methylphenol, stirring for 30min, adding a pour point depressant of type T6012 produced by Shandongkun chemical company, and stirring for 50min to obtain an intermediate oil product B, wherein the mass of the 2, 6-di-tert-butyl-4-methylphenol is 0.25% of that of the vegetable oil, and the mass of the pour point depressant is 0.2% of that of the vegetable oil;
s3, adding a molecular sieve which accounts for 1.5 percent of the mass of the vegetable oil into the intermediate oil product B, introducing dry air, heating and stirring for 50min at 55 ℃ under the air pressure of 0.4MPa, and filtering by using a plate oil filter to remove the molecular sieve to obtain an intermediate oil product C;
s4, adopting the model of the intermediate oil product C produced by Chongqing Lushun science and technology development Limited company: and filtering by using a ZJA-200 vacuum heating oil filter to remove impurities such as water and the like, setting the temperature to be 65 ℃, and setting a filter element to be 2 mu m to obtain the plant transformer oil.
Example 2
A preparation method of plant transformer oil comprises the following steps:
s1, heating the vegetable oil to 20 ℃, introducing dry air, stirring for 20min under the air pressure of 0.3MPa, adding carbamide, continuously stirring for 50min, and filtering by a plate oil filter to remove precipitates to obtain an intermediate oil product A;
s2, heating the intermediate oil product A to 50 ℃, adding 2, 6-di-tert-butyl-4-methylphenol, stirring for 40min, adding a pour point depressant of type T6012 produced by Shandongkun chemical company, and stirring for 60min to obtain an intermediate oil product B, wherein the mass of the 2, 6-di-tert-butyl-4-methylphenol is 0.2% of that of the vegetable oil, and the mass of the pour point depressant is 0.06% of that of the vegetable oil;
s3, adding a molecular sieve which accounts for 1% of the mass of the vegetable oil into the intermediate oil product B, introducing dry air, heating and stirring at 60 ℃ for 60min under the air pressure of 0.3MPa, and filtering by using a plate oil filter to remove the molecular sieve to obtain an intermediate oil product C;
s4, adopting the model of the intermediate oil product C produced by Chongqing Lushun science and technology development Limited company: and filtering by using a ZJA-200 vacuum heating oil filter to remove impurities such as water and the like, setting the temperature to be 65 ℃, and setting a filter element to be 2 mu m to obtain the plant transformer oil.
Example 3
A preparation method of plant transformer oil comprises the following steps:
s1, heating the vegetable oil to 30 ℃, introducing dry air, stirring for 10min under the air pressure of 0.5MPa, adding carbamide, continuously stirring for 60min, and filtering by a plate oil filter to remove precipitates to obtain an intermediate oil product A;
s2, heating the intermediate oil product A to 60 ℃, adding 2, 6-di-tert-butyl-4-methylphenol, stirring for 20min, adding a pour point depressant model T6012 produced by Shandongkun chemical company, and stirring for 40min to obtain an intermediate oil product B, wherein the mass of the 2, 6-di-tert-butyl-4-methylphenol is 0.3% of that of the vegetable oil, and the mass of the pour point depressant is 0.8% of that of the vegetable oil;
s3, adding a molecular sieve with the mass being 2% of that of the vegetable oil into the intermediate oil product B, introducing dry air, heating and stirring at 50 ℃ for 40min under the air pressure of 0.5MPa, and filtering by using a plate oil filter to remove the molecular sieve to obtain an intermediate oil product C;
s4, adopting the model of the intermediate oil product C produced by Chongqing Lushun science and technology development Limited company: and filtering by using a ZJA-200 vacuum heating oil filter to remove impurities such as water and the like, setting the temperature to be 65 ℃, and setting a filter element to be 2 mu m to obtain the plant transformer oil.
The vegetable transformer oil prepared in example 1 was subjected to a performance test, and the results are shown in table 1:
TABLE 1
The detection data obviously show that the key indexes of the finished product of the vegetable transformer oil prepared by the invention are improved and promoted.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The preparation method of the plant transformer oil is characterized by comprising the following steps:
s1, heating the vegetable oil to 20-30 ℃, introducing dry air, stirring uniformly under a certain air pressure, adding carbamide, continuing stirring, and filtering to remove precipitates to obtain an intermediate oil product A;
s2, adding an antioxidant and a pour point depressant into the intermediate oil product A, and heating and uniformly stirring to obtain an intermediate oil product B;
s3, adding a molecular sieve into the intermediate oil product B, introducing dry air, fully heating and stirring under a certain air pressure, and then filtering to remove the molecular sieve to obtain an intermediate oil product C;
and S4, filtering the intermediate oil product C to remove water, thereby obtaining the vegetable transformer oil.
2. The method for preparing vegetable transformer oil as claimed in claim 1, wherein in S1, the vegetable oil is heated to 20-30 ℃, the dry air is introduced, the mixture is stirred for 10-20min under the air pressure of 0.3-0.5MPa, and then carbamide is added, and the stirring is continued for 50-60 min.
3. The method according to claim 1, wherein the amount of carbamide in S1 is 0.1-0.2% of the amount of vegetable oil.
4. The method for preparing the vegetable transformer oil as claimed in claim 1, wherein in S2, the intermediate oil A is heated to 50-60 ℃, then the antioxidant is added and stirred for 20-40min, then the pour point depressant is added and stirred for 40-60min, and the intermediate oil B is obtained.
5. The method for preparing the vegetable transformer oil as claimed in claim 1, wherein in S2, the mass of the antioxidant is 0.2-0.3% of the mass of the vegetable oil, and the mass of the pour point depressant is 0.06-0.8% of the mass of the vegetable oil.
6. The method of claim 1, wherein the antioxidant is 2, 6-di-tert-butyl-4-methylphenol, 2, 6-di-tert-butyl-p-cresol, or a combination thereof.
7. The method for preparing vegetable transformer oil as claimed in claim 1, wherein in S3, the mixture is heated and stirred at 50-60 ℃ for 40-60min under 0.3-0.5 MPa.
8. The method for preparing vegetable transformer oil according to claim 1, wherein in S3, the mass of the molecular sieve is 1-2% of the mass of the vegetable oil.
9. The method for preparing the vegetable transformer oil as claimed in claim 1, wherein in S4, the filter element used for filtration is 1-3 μm, and the filtration temperature is 60-70 ℃.
10. A plant transformer oil, characterized by being produced by the production method according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111667690.2A CN114395436A (en) | 2021-12-30 | 2021-12-30 | Preparation method of plant transformer oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111667690.2A CN114395436A (en) | 2021-12-30 | 2021-12-30 | Preparation method of plant transformer oil |
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| Publication Number | Publication Date |
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| CN114395436A true CN114395436A (en) | 2022-04-26 |
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| CN202111667690.2A Pending CN114395436A (en) | 2021-12-30 | 2021-12-30 | Preparation method of plant transformer oil |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010008387A (en) * | 2000-11-30 | 2001-02-05 | 이성권 | Method for producing highly pure unsaturated fatty acid using crystallization |
| CN105296110A (en) * | 2015-10-29 | 2016-02-03 | 上海中孚特种油品有限公司 | Environment-friendly plant transformer oil and preparation method thereof |
| CN109574826A (en) * | 2019-01-22 | 2019-04-05 | 中国科学院新疆理化技术研究所 | A kind of preparation method of high-purity oleic acid |
| CN109628213A (en) * | 2018-12-27 | 2019-04-16 | 安徽嘉旗粮油工程技术有限公司 | A method of transformer oil is prepared using vegetable oil |
| CN110272447A (en) * | 2018-03-17 | 2019-09-24 | 南京工业大学 | A method of preparing organosilicon Biolubrication oil base oil |
-
2021
- 2021-12-30 CN CN202111667690.2A patent/CN114395436A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010008387A (en) * | 2000-11-30 | 2001-02-05 | 이성권 | Method for producing highly pure unsaturated fatty acid using crystallization |
| CN105296110A (en) * | 2015-10-29 | 2016-02-03 | 上海中孚特种油品有限公司 | Environment-friendly plant transformer oil and preparation method thereof |
| CN110272447A (en) * | 2018-03-17 | 2019-09-24 | 南京工业大学 | A method of preparing organosilicon Biolubrication oil base oil |
| CN109628213A (en) * | 2018-12-27 | 2019-04-16 | 安徽嘉旗粮油工程技术有限公司 | A method of transformer oil is prepared using vegetable oil |
| CN109574826A (en) * | 2019-01-22 | 2019-04-05 | 中国科学院新疆理化技术研究所 | A kind of preparation method of high-purity oleic acid |
Non-Patent Citations (3)
| Title |
|---|
| 吕微等: "植物油脂多不饱和脂肪酸的分离与富集研究", 《食品工业科技》 * |
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