CN106635250A - Method for preparing transformer oil from edible vegetable oil - Google Patents
Method for preparing transformer oil from edible vegetable oil Download PDFInfo
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- CN106635250A CN106635250A CN201611121843.2A CN201611121843A CN106635250A CN 106635250 A CN106635250 A CN 106635250A CN 201611121843 A CN201611121843 A CN 201611121843A CN 106635250 A CN106635250 A CN 106635250A
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- vegetable oil
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- 239000003921 oil Substances 0.000 title claims abstract description 159
- 235000019198 oils Nutrition 0.000 title claims abstract description 144
- 239000008157 edible vegetable oil Substances 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000003756 stirring Methods 0.000 claims abstract description 80
- 239000008234 soft water Substances 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 239000003513 alkali Substances 0.000 claims abstract description 23
- 239000002253 acid Substances 0.000 claims abstract description 15
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 239000000047 product Substances 0.000 claims description 65
- 238000005406 washing Methods 0.000 claims description 38
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 34
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 31
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Substances [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 31
- 238000010792 warming Methods 0.000 claims description 29
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 28
- 238000009874 alkali refining Methods 0.000 claims description 20
- 239000007795 chemical reaction product Substances 0.000 claims description 19
- 235000019484 Rapeseed oil Nutrition 0.000 claims description 18
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 14
- 238000009413 insulation Methods 0.000 claims description 14
- 230000018044 dehydration Effects 0.000 claims description 11
- 238000006297 dehydration reaction Methods 0.000 claims description 11
- 241000931143 Gleditsia sinensis Species 0.000 claims description 10
- 238000005516 engineering process Methods 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 10
- 239000003963 antioxidant agent Substances 0.000 claims description 9
- 230000003078 antioxidant effect Effects 0.000 claims description 9
- 230000004888 barrier function Effects 0.000 claims description 9
- 235000019483 Peanut oil Nutrition 0.000 claims description 8
- 235000019486 Sunflower oil Nutrition 0.000 claims description 8
- 239000000312 peanut oil Substances 0.000 claims description 8
- 239000003549 soybean oil Substances 0.000 claims description 8
- 235000012424 soybean oil Nutrition 0.000 claims description 8
- 239000002600 sunflower oil Substances 0.000 claims description 8
- 238000001354 calcination Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 7
- 239000002893 slag Substances 0.000 claims description 6
- 235000013305 food Nutrition 0.000 claims description 3
- 239000010773 plant oil Substances 0.000 claims description 2
- 229910017435 S2 In Inorganic materials 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 235000018927 edible plant Nutrition 0.000 claims 1
- 238000000926 separation method Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 4
- 239000004927 clay Substances 0.000 abstract 1
- 238000005086 pumping Methods 0.000 abstract 1
- 239000001397 quillaja saponaria molina bark Substances 0.000 abstract 1
- 229930182490 saponin Natural products 0.000 abstract 1
- 150000007949 saponins Chemical class 0.000 abstract 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 8
- 239000008158 vegetable oil Substances 0.000 description 7
- 239000002480 mineral oil Substances 0.000 description 4
- 235000010446 mineral oil Nutrition 0.000 description 4
- 230000032683 aging Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- -1 fatty acid sodium salt Chemical class 0.000 description 2
- 238000005213 imbibition Methods 0.000 description 2
- IWDCLRJOBJJRNH-UHFFFAOYSA-N p-cresol Chemical compound CC1=CC=C(O)C=C1 IWDCLRJOBJJRNH-UHFFFAOYSA-N 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 239000002841 Lewis acid Substances 0.000 description 1
- 238000006701 autoxidation reaction Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- QNEFNFIKZWUAEQ-UHFFFAOYSA-N carbonic acid;potassium Chemical compound [K].OC(O)=O QNEFNFIKZWUAEQ-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000021615 conjugation Effects 0.000 description 1
- 150000001896 cresols Chemical class 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 150000007517 lewis acids Chemical class 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 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
- C10M109/00—Lubricating compositions characterised by the base-material being a compound of unknown or incompletely defined constitution
- C10M109/02—Reaction products
-
- 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
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/001—Refining fats or fatty oils by a combination of two or more of the means hereafter
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/008—Refining fats or fatty oils by filtration, e.g. including ultra filtration, dialysis
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/02—Refining fats or fatty oils by chemical reaction
- C11B3/06—Refining fats or fatty oils by chemical reaction with bases
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/10—Refining fats or fatty oils by adsorption
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Fats And Perfumes (AREA)
- Lubricants (AREA)
Abstract
The invention discloses a method for preparing transformer oil from edible vegetable oil. The method includes: heating the edible vegetable oil, dropwise adding alkali liquid, continuing heating and stirring, cooling, standing, and separating out saponin; adding soft water, continuing heating and stirring, cooling, standing, performing oil-water separation, and heating; adding soft water while stirring, cooling, standing, and performing oil-water separation and vacuum dewatering; adding activated clay, stirring, filtering, heating, and pumping into a deacidifying tower for deacidifying; cooling after oil discharge, and filtering to obtain the transformer oil. The method for preparing the transformer oil from the edible vegetable oil is simple in technical operation and mild in condition, and the transformer oil prepared according to the method is much smaller than 0.03mgKOH/g in acid value and is excellent in low-temperature fluidity, light in color and great in electrical performance.
Description
Technical field
The present invention relates to transformer oil technical field, more particularly to a kind of method that edible vegetable oil prepares transformer oil.
Background technology
At present transformer oil is mainly using mineral oil and artificial oil.But, mineral oil burning-point is relatively low, biodegradability
Difference, is non-renewable resources；Artificial oil is relatively costly, it is impossible to complete biodegradable, or even containing toxic, is limited in certain occasion
System is used.Vegetable oil may replace non-renewable mineral oil in terms of insulating properties and the feature of environmental protection, take into account cost, biodegradable
The aspect such as property and raw material sources can replace artificial oil, be a kind of novel green transformer oil without negatively influencing to ecological environment.Food
Have compared with high-flash feature with vegetable oil, burning-point is higher than 300 DEG C, and is renewable resource, almost can with complete biodegradable,
Its electric property is suitable with mineral oil, there is higher water imbibition, is conducive to delaying insulating paper aging speed.Food after treatment
There is good electric property with vegetable oil, there is good water imbibition, it is compatible good with conventional transformer raw material, can be substantially
The ageing rate of insulating paper in transformer is reduced, extends the service life of transformer.Existing vegetable oil prepares transformer oil requirement acid
Value is at least in below 0.03mgKOH/g, and conventional preparation techniques can not reach.
The content of the invention
To solve technical problem present in background technology, the present invention proposes that a kind of edible vegetable oil prepares transformer oil
Method, its technological process is simple to operate, mild condition, and not only acid number is much smaller than 0.03mgKOH/g to prepared transformer oil, and
It is of light color and low temperature flowability is excellent, and electric property is good.
The method that a kind of edible vegetable oil proposed by the present invention prepares transformer oil, comprises the steps：
S1, edible vegetable oil is warming up to into 30-50 DEG C, it is 20- that concentration is added dropwise under the stirring of 20-40r/min rotating speeds
The alkali lye of 30wt%, completes to be added dropwise in 10-15min, is continuously heating to 50-70 DEG C, and with the rotating speed of 50-70r/min 5- is stirred
15min, then 25-35min is stirred with the rotating speed of 20-40r/min, 5-8h is stood after cooling, isolate and obtain after Chinese honey locust alkali refining oil
First product；
S2, the alkali refining for obtaining S1 oil first product are warming up to 50-70 DEG C, and stirring is lower to add the soft water that temperature is 60-80 DEG C,
Complete to add water in 15-25min, be continuously heating to 80-100 DEG C, 10-20min is stirred with the rotating speed of 50-70r/min, it is quiet after cooling
3-6h is put, obtains washing oily first product after water-oil separating；
S3, the washing for obtaining S2 oil first product are warming up to 70-90 DEG C, and stirring is lower to add the soft water that temperature is 80-100 DEG C,
Complete to add water in 5-15min, 5-15min is stirred with the rotating speed of 50-70r/min, 2-5h is stood after cooling, obtain after water-oil separating
Washing oil end product；
S4, the washing for obtaining S3 oil end product are heated under vacuo 100-120 DEG C and carry out vacuum dehydration, and dewatering time is
1.5-2h, then atlapulgite is added under the rotating speed stirring of 55-75r/min, filter after stirring 1-1.5h, at the beginning of obtaining transformer oil
Product；
S5, the transformer oil first product for obtaining S4 is pumped in extracting tower after being heated to 250-270 DEG C carries out depickling, vacuum
For 130-180Pa, oil outlet temperature is 220-250 DEG C, it is fuel-displaced after be cooled to 30-45 DEG C and filtered, obtain the transformer oil.
Preferably, the edible vegetable oil is one or more in rapeseed oil, peanut oil, soybean oil, sunflower oil
Combination, preferably rapeseed oil；Preferably, the acid number of edible vegetable oil is 0.9-1.2mgKOH/g.
Preferably, in S1, the consumption of the alkali lye is the 0.28-0.33wt% of edible vegetable oil.
Preferably, in S2, the consumption of the soft water is the 15-20wt% of edible vegetable oil.
Preferably, in S3, the consumption of the soft water is the 10-15wt% of edible vegetable oil.
Preferably, in S4, vacuum is -0.09～-0.12Mpa.
Preferably, in S4, the atlapulgite is load potassium carbonate atlapulgite, and its preparation technology includes：Will be active white
After soil adds water, stir at 50-60 DEG C to being uniformly dispersed, add concentration to stir for the phosphoric acid solution of 5-10%, phosphoric acid is molten
The consumption of liquid is the 20-60% of atlapulgite weight, is filtered, drying, after grinding, adds K2C03It is well mixed, K2C03Consumption
It is the 10-30% of atlapulgite weight, in N2With the ramp of 10-15 DEG C/min to 450-650 DEG C under the atmosphere of protection, protect
After temperature calcining 3-5h, room temperature is down to, obtains the load potassium carbonate atlapulgite；Preferably, the load potassium carbonate activity is white
The consumption of soil is the 3.5-5.5wt% of edible vegetable oil.
Preferably, in S5, after the transformer oil first product heating that S4 is obtained, extracting tower is pumped into the flow of 500-700L/h
In, live (open) steam air lift 5-10min carries out air lift depickling, and the consumption of live (open) steam is the 0.2-0.5wt% of edible vegetable oil.
Preferably, in S5, also include adding antioxidant, the consumption of antioxidant after transformer oil first product is filtered
It is the 0.08-0.12wt% of edible vegetable oil, after stirring at 50-70 DEG C, insulation is filtered by barrier film oil filter
Slag, obtains the transformer oil；Preferably, the antioxidant is BHT and/or N- phenyl-α-naphthalene
Amine.
Preferably, the method that described edible vegetable oil prepares transformer oil, comprises the steps：
S1, edible vegetable oil is warming up to into 30-40 DEG C, it is 25- that concentration is added dropwise under the stirring of 25-35r/min rotating speeds
The alkali lye of 30wt%, the consumption of alkali lye is the 0.28-0.33wt% of edible vegetable oil, completes to be added dropwise in 12-14min, continues to rise
Temperature stirs 5-10min to 55-65 DEG C with the rotating speed of 55-65r/min, then stirs 30-35min with the rotating speed of 25-35r/min, cold
But 6-7h is stood afterwards, is isolated and obtain after Chinese honey locust alkali refining oil first product；
S2, the alkali refining for obtaining S1 oil first product are warming up to 55-65 DEG C, and the lower addition temperature of stirring is 65-75 DEG C of soft water, soft
The consumption of water is the 15-20wt% of edible vegetable oil, completes to add water in 15-20min, 85-95 DEG C is continuously heating to, with 55-
The rotating speed stirring 10-15min of 65r/min, stands 4-5h after cooling, obtain washing oily first product after water-oil separating；
S3, the washing for obtaining S2 oil first product are warming up to 75-85 DEG C, and the lower addition temperature of stirring is 85-95 DEG C of soft water, soft
The consumption of water is the 10-15wt% of edible vegetable oil, completes to add water in 10-15min, and with the rotating speed of 55-65r/min 5- is stirred
10min, stands 3-4h after cooling, obtain washing oily end product after water-oil separating；
S4, the washing for obtaining S3 oil end product are heated under vacuo 100-110 DEG C and carry out vacuum dehydration, and dewatering time is
1.6-1.8h, then atlapulgite is added under the rotating speed stirring of 60-70r/min, the consumption of atlapulgite is edible vegetable oil
3.5-5.5wt%, filters after stirring 1.2-1.4h, obtains transformer oil first product；
S5, the transformer oil first product for obtaining S4 is pumped in extracting tower after being heated to 260-270 DEG C carries out depickling, vacuum
For 150-160Pa, oil outlet temperature is 230-240 DEG C, it is fuel-displaced after be cooled to 35-40 DEG C and filtered, add antioxidant, resist
The consumption of oxidant is the 0.08-0.12wt% of edible vegetable oil, after stirring at 50-70 DEG C, is incubated and is filtered by barrier film
Oil machine carries out filtration slag, obtains the transformer oil.
Compared with prior art, the method that a kind of edible vegetable oil proposed by the present invention prepares transformer oil, by successively
Alkali white silk is carried out, is washed, dehydration is decolourized, the refinery practice such as depickling, and adjustment is optimized to each parameter in refinery practice, can
Vegetable oil acid number is effectively reduced, the alkali refining time is greatly reduced, reduce washing times and consumption, improve preparation efficiency, and maintained
The good electric property of oil product, easy controlled operation and simple.
In concrete preparation method, first only carry out an alkali and practice, by select suitable concentration sodium hydroxide solution and
Alkali practices temperature and stir speed (S.S.), has neutralized the free fatty of the overwhelming majority in edible vegetable oil, the fatty acid sodium salt (soap of generation
Angle) not readily dissolve in oil, formed flocculation jelly and sedimentation separation go out acid number be 0.25mgKOH/g alkali refining oil first product；This
Wash through high temperature twice afterwards, a large amount of Chinese honey locusts and water-solubility impurity are removed in the vegetable oil after practicing to alkali, washing oil end product
Acid number be down to below 0.04mgKOH/g；Vacuum dehydration is carried out again, it is to avoid high dielectric of the water in oil product affects, and maintains oil product
Good electric property；Then decolourized, the decoloration process under vacuum, and bleaching temperature and time are controlled, conjugation can be suppressed
The formation of acid；It is used as decolouring reagent by selecting load potassium carbonate atlapulgite simultaneously, it not only has the extremely strong surface of solids
Adsorption activity, decolorizing efficiency is high, and as the Bronsted on the atlapulgite after potassium carbonate and acidifying is sour, Lewis acid is living
Property be centrally formed firmly load, give atlapulgite alkalescence and catalytic performance, deep removal can be carried out to acid number in vegetable oil,
Oil product acid number is set to be down to below 0.009mgKOH/g；Finally oil product is pumped in extracting tower again, using vacuum air lift method, allowed
Remaining free fatty is separated with steam volatilization, acid number is further reduced to below 0.007mgKOH/g, while can add
Antioxidant, it can occur instead with the living radical (R) that generates in autoxidation process in oil and peroxide (ROO)
Should, and form stable compound, so as to consume oil in the free radical that generates and prevent the oxidation course of oil molecule, obtain
A kind of more stable transformer oil of performance.
Summary, the method technological process that the present invention is provided is simple to operate, mild condition.Its transformer for preparing
Not only acid number is much smaller than 0.03mgKOH/g to oil, and low temperature flowability is excellent, of light color, and electric property is good, with wide
General market using value.The present invention preferably solves acid number in traditional plant oil refining transformer oil and is difficult to up to standard lacking
Fall into, widened the source of the transformer oil of the country, and can preferably increase its low temperature flow, be conducive to producing performance top grade
Transformer oil.
Specific embodiment
Below, technical scheme is described in detail by specific embodiment.
Embodiment 1
The method that a kind of edible vegetable oil proposed by the present invention prepares transformer oil, including：
S1, rapeseed oil is warming up to 30 DEG C, alkali lye of the concentration for 20wt%, institute are added dropwise under the stirring of 40r/min rotating speeds
The consumption for stating alkali lye is the 0.33wt% of rapeseed oil, completes to be added dropwise in 10min, 70 DEG C is continuously heating to, with the rotating speed of 50r/min
Stirring 15min, then 35min is stirred with the rotating speed of 20r/min, 5h is stood after cooling, isolate and obtain after Chinese honey locust alkali refining oil first product；
S2, the alkali refining for obtaining S1 oil first product are warming up to 70 DEG C, and stirring is lower to add the soft water that temperature is 60 DEG C, the soft water
Consumption be rapeseed oil 20wt%, complete to add water in 15min, be continuously heating to 100 DEG C, stirred with the rotating speed of 50r/min
20min, stands 3h after cooling, obtain washing oily first product after water-oil separating；
S3, the washing for obtaining S2 oil first product are warming up to 90 DEG C, and stirring is lower to add the soft water that temperature is 80 DEG C, the soft water
Consumption be rapeseed oil 15wt%, complete to add water in 5min, 5min is stirred with the rotating speed of 70r/min, 5h is stood after cooling, oil
Water obtains washing oily end product after separating；
S4, the washing for obtaining S3 oil end product are heated under vacuo 100 DEG C carries out vacuum dehydration, vacuum for-
0.12Mpa, dewatering time is 1.5h, then adds atlapulgite, the consumption of the atlapulgite under the rotating speed stirring of 75r/min
It is the 3.5wt% of rapeseed oil, filters after stirring 1.5h, obtain transformer oil first product, wherein the atlapulgite is load carbonic acid
Potassium atlapulgite, its preparation technology includes：After atlapulgite is added water, stir at 50 DEG C to being uniformly dispersed, add the concentration to be
10% phosphoric acid solution stirs, and the consumption of phosphoric acid solution is the 20% of atlapulgite weight, filters, drying, after grinding, plus
Enter K2C03It is well mixed, K2C03Consumption be the 30% of atlapulgite weight, in N2With the speed of 10 DEG C/min under the atmosphere of protection
Rate is warming up to 650 DEG C, after insulation calcining 3h, is down to room temperature, obtains the load potassium carbonate atlapulgite；
After S5, the transformer oil first product for obtaining S4 are heated to 270 DEG C, pumped in extracting tower directly with the flow of 500L/h
Steam air lift 10min, carries out air lift depickling, and the consumption of live (open) steam is the 0.2wt% of rapeseed oil, and vacuum is 180Pa, fuel-displaced
Temperature is 220 DEG C, it is fuel-displaced after be cooled to 45 DEG C and filtered, add BHT, 2,6- di-t-butyls pair
The consumption of cresols is the 0.08wt% of rapeseed oil, and after stirring at 70 DEG C, insulation carried out filter residue by barrier film oil filter
Matter, obtains the transformer oil.
Embodiment 2
The method that a kind of edible vegetable oil proposed by the present invention prepares transformer oil, including：
S1, rapeseed oil is warming up to 50 DEG C, alkali lye of the concentration for 30wt%, institute are added dropwise under the stirring of 20r/min rotating speeds
The consumption for stating alkali lye is the 0.28wt% of rapeseed oil, completes to be added dropwise in 15min, 55 DEG C is continuously heating to, with the rotating speed of 70r/min
Stirring 5min, then 25min is stirred with the rotating speed of 40r/min, 8h is stood after cooling, isolate and obtain after Chinese honey locust alkali refining oil first product；
S2, the alkali refining for obtaining S1 oil first product are warming up to 50 DEG C, and stirring is lower to add the soft water that temperature is 80 DEG C, the soft water
Consumption be rapeseed oil 15wt%, complete to add water in 25min, be continuously heating to 80 DEG C, stirred with the rotating speed of 70r/min
10min, stands 6h after cooling, obtain washing oily first product after water-oil separating；
S3, the washing for obtaining S2 oil first product are warming up to 70 DEG C, and the lower addition temperature of stirring is 100 DEG C of soft water, described soft
The consumption of water is the 10wt% of rapeseed oil, completes to add water in 15min, and with the rotating speed of 50r/min 15min is stirred, and is stood after cooling
2h, obtains washing oily end product after water-oil separating；
S4, the washing for obtaining S3 oil end product are heated under vacuo 120 DEG C carries out vacuum dehydration, vacuum for-
0.09Mpa, dewatering time is 2h, then adds the consumption of atlapulgite, the atlapulgite to be under the rotating speed stirring of 55r/min
The 5.5wt% of rapeseed oil, filters after stirring 1h, obtains transformer oil first product, wherein the atlapulgite is lived for load potassium carbonate
Property carclazyte, its preparation technology includes：After atlapulgite is added water, stir at 60 DEG C to being uniformly dispersed, add concentration to be 5%
Phosphoric acid solution stirs, and the consumption of phosphoric acid solution is the 60% of atlapulgite weight, filters, drying, after grinding, adds K2C03
It is well mixed, K2C03Consumption be the 10% of atlapulgite weight, in N2With the ramp of 15 DEG C/min under the atmosphere of protection
To 450 DEG C, after insulation calcining 5h, room temperature is down to, obtains the load potassium carbonate atlapulgite；
After S5, the transformer oil first product for obtaining S4 are heated to 250 DEG C, pumped in extracting tower directly with the flow of 700L/h
Steam air lift 5min, carries out air lift depickling, and the consumption of live (open) steam is the 0.5wt% of rapeseed oil, and vacuum is 130Pa, fuel-displaced
Temperature is 250 DEG C, it is fuel-displaced after be cooled to 30 DEG C and filtered, add N- PAs, the consumption of N- PAs
It is the 0.12wt% of rapeseed oil, after stirring at 50 DEG C, insulation carries out filtration slag by barrier film oil filter, obtains described
Transformer oil.
Embodiment 3
The method that a kind of edible vegetable oil proposed by the present invention prepares transformer oil, including：
S1, peanut oil is warming up to 30 DEG C, alkali lye of the concentration for 25wt%, alkali are added dropwise under the stirring of 35r/min rotating speeds
The consumption of liquid is the 0.31wt% of peanut oil, completes to be added dropwise in 12min, is continuously heating to 65 DEG C, is stirred with the rotating speed of 55r/min
10min, then 35min is stirred with the rotating speed of 25r/min, 6h is stood after cooling, isolate and obtain after Chinese honey locust alkali refining oil first product；
S2, the alkali refining for obtaining S1 oil first product are warming up to 65 DEG C, and stirring is lower to add the soft water that temperature is 65 DEG C, the use of soft water
Amount is the 17wt% of peanut oil, completes to add water in 20min, is continuously heating to 95 DEG C, and with the rotating speed of 55r/min 15min is stirred, cold
But 4h is stood afterwards, obtains washing oily first product after water-oil separating；
S3, the washing for obtaining S2 oil first product are warming up to 85 DEG C, and stirring is lower to add the soft water that temperature is 85 DEG C, the use of soft water
Amount is the 12wt% of peanut oil, completes to add water in 10min, and with the rotating speed of 65r/min 5min is stirred, and 4h, profit are stood after cooling
Obtain washing oily end product after separation；
S4, the washing for obtaining S3 oil end product are heated under vacuo 100 DEG C carries out vacuum dehydration, vacuum for-
0.1Mpa, dewatering time is 1.6h, then adds atlapulgite under the rotating speed stirring of 70r/min, and the consumption of atlapulgite is colored
The 4.5wt% of oil generation, filters after stirring 1.4h, obtains transformer oil first product, wherein the atlapulgite is lived for load potassium carbonate
Property carclazyte, its preparation technology includes：After atlapulgite is added water, stir at 55 DEG C to being uniformly dispersed, add concentration to be 7%
Phosphoric acid solution stirs, and the consumption of phosphoric acid solution is the 40% of atlapulgite weight, filters, drying, after grinding, adds K2C03
It is well mixed, K2C03Consumption be the 20% of atlapulgite weight, in N2With the ramp of 12 DEG C/min under the atmosphere of protection
To 550 DEG C, after insulation calcining 4h, room temperature is down to, obtains the load potassium carbonate atlapulgite；
After S5, the transformer oil first product for obtaining S4 are heated to 270 DEG C, pumped in extracting tower with the flow of 500L/h, directly
Steam air lift 10min is connect, air lift depickling is carried out, the consumption of live (open) steam is the 0.2wt% of peanut oil, and vacuum is 160Pa, is gone out
Oil temperature is 230 DEG C, it is fuel-displaced after be cooled to 40 DEG C and filtered, add BHT, 2,6- di-t-butyls
The consumption of paracresol is the 0.1wt% of peanut oil, and after stirring at 70 DEG C, insulation carried out filter residue by barrier film oil filter
Matter, obtains the transformer oil.
Embodiment 4
The method that a kind of edible vegetable oil proposed by the present invention prepares transformer oil, including：
S1, soybean oil is warming up to 40 DEG C, alkali lye of the concentration for 30wt%, alkali are added dropwise under the stirring of 25r/min rotating speeds
The consumption of liquid is the 0.28wt% of soybean oil, completes to be added dropwise in 14min, is continuously heating to 55 DEG C, is stirred with the rotating speed of 65r/min
5min, then 30min is stirred with the rotating speed of 35r/min, 7h is stood after cooling, isolate and obtain after Chinese honey locust alkali refining oil first product；
S2, the alkali refining for obtaining S1 oil first product are warming up to 55 DEG C, and stirring is lower to add the soft water that temperature is 75 DEG C, the use of soft water
Amount is the 15wt% of soybean oil, completes to add water in 20min, is continuously heating to 85 DEG C, and with the rotating speed of 65r/min 10min is stirred, cold
But 5h is stood afterwards, obtains washing oily first product after water-oil separating；
S3, the washing for obtaining S2 oil first product are warming up to 75 DEG C, and stirring is lower to add the soft water that temperature is 95 DEG C, the use of soft water
Amount is the 10wt% of soybean oil, completes to add water in 15min, and with the rotating speed of 55r/min 10min is stirred, and 3h, profit are stood after cooling
Obtain washing oily end product after separation；
S4, the washing for obtaining S3 oil end product are heated under vacuo 110 DEG C carries out vacuum dehydration, vacuum for-
0.09Mpa, dewatering time is 1.8h, then adds atlapulgite under the rotating speed stirring of 60r/min, and the consumption of atlapulgite is big
The 5.5wt% of soya-bean oil, filters after stirring 1.2h, obtains transformer oil first product, wherein the atlapulgite is lived for load potassium carbonate
Property carclazyte, its preparation technology includes：After atlapulgite is added water, stir at 60 DEG C to being uniformly dispersed, add concentration to be 5%
Phosphoric acid solution stirs, and the consumption of phosphoric acid solution is the 20% of atlapulgite weight, filters, drying, after grinding, adds K2C03
It is well mixed, K2C03Consumption be the 30% of atlapulgite weight, in N2With the ramp of 10 DEG C/min under the atmosphere of protection
To 650 DEG C, after insulation calcining 3h, room temperature is down to, obtains the load potassium carbonate atlapulgite；
After S5, the transformer oil first product for obtaining S4 are heated to 260 DEG C, pumped in extracting tower with the flow of 700L/h, directly
Steam air lift 10min is connect, air lift depickling is carried out, the consumption of live (open) steam is the 0.2wt% of soybean oil, and vacuum is 150Pa, is gone out
Oil temperature is 240 DEG C, it is fuel-displaced after be cooled to 35 DEG C and filtered, add N- PAs, the use of N- PAs
Amount is the 0.12wt% of soybean oil, and after stirring at 50 DEG C, insulation carries out filtration slag by barrier film oil filter, obtains institute
State transformer oil.
Embodiment 5
The method that a kind of edible vegetable oil proposed by the present invention prepares transformer oil, including：
S1, sunflower oil is warming up to 35 DEG C, alkali lye of the concentration for 28wt% is added dropwise under the stirring of 30r/min rotating speeds,
The consumption of alkali lye is the 0.3wt% of sunflower oil, completes to be added dropwise in 13min, 50 DEG C is continuously heating to, with the rotating speed of 60r/min
Stirring 7min, then 32min is stirred with the rotating speed of 30r/min, 6.5h is stood after cooling, isolate and obtain after Chinese honey locust alkali refining oil just
Product；
S2, the alkali refining for obtaining S1 oil first product are warming up to 60 DEG C, and stirring is lower to add the soft water that temperature is 70 DEG C, the use of soft water
Amount is the 18wt% of sunflower oil, completes to add water in 18min, is continuously heating to 90 DEG C, and with the rotating speed of 60r/min 13min is stirred,
4.5h is stood after cooling, obtains washing oily first product after water-oil separating；
S3, the washing for obtaining S2 oil first product are warming up to 80 DEG C, and stirring is lower to add the soft water that temperature is 90 DEG C, the use of soft water
Amount is the 12wt% of sunflower oil, completes to add water in 13min, and with the rotating speed of 60r/min 7min is stirred, and 3.5h is stood after cooling,
Obtain washing oily end product after water-oil separating；
S4, the washing for obtaining S3 oil end product are heated under vacuo 105 DEG C carries out vacuum dehydration, vacuum for-
0.11Mpa, dewatering time is 1.7h, then adds atlapulgite under the rotating speed stirring of 65r/min, and the consumption of atlapulgite is certain herbaceous plants with big flowers
The 4.5wt% of flower seed oil, filters after stirring 1.3h, obtains transformer oil first product, wherein the atlapulgite is load potassium carbonate
Atlapulgite, its preparation technology includes：After atlapulgite is added water, stir at 55 DEG C to being uniformly dispersed, add concentration to be 7%
Phosphoric acid solution stir, the consumption of phosphoric acid solution is the 50% of atlapulgite weight, filter, drying, after grinding, add
K2C03It is well mixed, K2C03Consumption be the 20% of atlapulgite weight, in N2With the speed of 13 DEG C/min under the atmosphere of protection
550 DEG C are warming up to, after insulation calcining 4h, room temperature is down to, the load potassium carbonate atlapulgite is obtained；
After S5, the transformer oil first product for obtaining S4 are heated to 265 DEG C, pumped in extracting tower with the flow of 600L/h, directly
Steam air lift 7min is connect, air lift depickling is carried out, the consumption of live (open) steam is the 0.4wt% of sunflower oil, and vacuum is 155Pa,
Oil outlet temperature is 235 DEG C, it is fuel-displaced after be cooled to 38 DEG C and filtered, add BHT, 2,6- bis- tertiary fourths
The consumption of base paracresol is the 0.1wt% of sunflower oil, and after stirring at 60 DEG C, insulation was carried out by barrier film oil filter
Filter residue matter, obtains the transformer oil.
Properties detection is carried out by the transformer oil to preparing in embodiment 1-5, its result is as shown in the table：
| Detection project | Embodiment oil product | State quota | Test method |
| Pour point/40 DEG C | -43 | ≤-40 | GB/T3535 |
| Condensation point/40 DEG C | -47 | ≤-45 | GB/T5102 |
| Kinematic viscosity (40 DEG C)/(mm2/s) | 10.1 | ≤12 | GB/T265 |
| Density (40 DEG C)/(kg/m3) | 875 | ≤895 | GB/T1884 1885 |
| Breakdown voltage (spacing 2.5mm) KV | 55 | ≥30 | GB/T5075 |
| Dielectric dissipation factor (90 DEG C) | 0.0003 | ≤0.005 | GB/T5654 |
| Acid number (in terms of mgKOH)/(mg/g) | 0.0065 | ≤0.01 | NB/SH/T0836 |
| Interfacial tension mN/m | 44.8 | ≥40 | GB/T6541 |
| Flash-point (remaining silent)/DEG C | 180 | ≥135 | GB/T261 |
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept equivalent or change in addition, all should be included within the scope of the present invention.
Claims (10)
1. a kind of method that edible vegetable oil prepares transformer oil, it is characterised in that comprise the steps：
S1, edible vegetable oil is warming up to into 30-50 DEG C, it is 20-30wt% that concentration is added dropwise under the stirring of 20-40r/min rotating speeds
Alkali lye, complete to be added dropwise in 10-15min, be continuously heating to 50-70 DEG C, 5-15min is stirred with the rotating speed of 50-70r/min, then
25-35min is stirred with the rotating speed of 20-40r/min, 5-8h is stood after cooling, isolated and obtain after Chinese honey locust alkali refining oil first product；
S2, the alkali refining for obtaining S1 oil first product are warming up to 50-70 DEG C, and stirring is lower to add the soft water that temperature is 60-80 DEG C, 15-
Complete to add water in 25min, be continuously heating to 80-100 DEG C, 10-20min is stirred with the rotating speed of 50-70r/min, stand after cooling
3-6h, obtains washing oily first product after water-oil separating；
S3, the washing for obtaining S2 oil first product are warming up to 70-90 DEG C, and stirring is lower to add the soft water that temperature is 80-100 DEG C, 5-
Complete to add water in 15min, 5-15min is stirred with the rotating speed of 50-70r/min, 2-5h is stood after cooling, water is obtained after water-oil separating
Washing oil end product；
S4, the washing for obtaining S3 oil end product are heated under vacuo 100-120 DEG C and carry out vacuum dehydration, and dewatering time is 1.5-
2h, then atlapulgite is added under the rotating speed stirring of 55-75r/min, filter after stirring 1-1.5h, obtain transformer oil first product；
S5, the transformer oil first product for obtaining S4 is pumped in extracting tower after being heated to 250-270 DEG C carries out depickling, and vacuum is
130-180Pa, oil outlet temperature is 220-250 DEG C, it is fuel-displaced after be cooled to 30-45 DEG C and filtered, obtain the transformer oil.
2. the method that edible vegetable oil according to claim 1 prepares transformer oil, it is characterised in that the food plant
Oil is one or more the combination in rapeseed oil, peanut oil, soybean oil, sunflower oil, preferably rapeseed oil；Preferably,
The acid number of edible vegetable oil is 0.9-1.2mgKOH/g.
3. the method that edible vegetable oil according to claim 1 and 2 prepares transformer oil, it is characterised in that in S1, it is described
The consumption of alkali lye is the 0.28-0.33wt% of edible vegetable oil.
4. the method that the edible vegetable oil according to any one of claim 1-3 prepares transformer oil, it is characterised in that S2
In, the consumption of the soft water is the 15-20wt% of edible vegetable oil.
5. the method that the edible vegetable oil according to any one of claim 1-4 prepares transformer oil, it is characterised in that S3
In, the consumption of the soft water is the 10-15wt% of edible vegetable oil.
6. the method that the edible vegetable oil according to any one of claim 1-5 prepares transformer oil, it is characterised in that S4
In, vacuum is -0.09～-0.12Mpa.
7. the method that the edible vegetable oil according to any one of claim 1-6 prepares transformer oil, it is characterised in that S4
In, the atlapulgite is load potassium carbonate atlapulgite, and its preparation technology includes：After atlapulgite is added water, at 50-60 DEG C
Under stir to being uniformly dispersed, add concentration to stir for the phosphoric acid solution of 5-10%, the consumption of phosphoric acid solution is atlapulgite
The 20-60% of weight, filters, drying, after grinding, adds K2C03It is well mixed, K2C03Consumption be atlapulgite weight
10-30%, in N2With the ramp of 10-15 DEG C/min to 450-650 DEG C under the atmosphere of protection, after insulation calcining 3-5h, drop
To room temperature, the load potassium carbonate atlapulgite is obtained；Preferably, the consumption of the load potassium carbonate atlapulgite is edible plant
The 3.5-5.5wt% of thing oil.
8. the method that the edible vegetable oil according to any one of claim 1-7 prepares transformer oil, it is characterised in that S5
In, after the transformer oil first product heating that S4 is obtained, pumped in extracting tower with the flow of 500-700L/h, live (open) steam air lift 5-
10min, carries out air lift depickling, and the consumption of live (open) steam is the 0.2-0.5wt% of edible vegetable oil.
9. the method that the edible vegetable oil according to any one of claim 1-8 prepares transformer oil, it is characterised in that S5
In, also including adding antioxidant after transformer oil first product is filtered, the consumption of antioxidant is edible vegetable oil
0.08-0.12wt%, after stirring at 50-70 DEG C, insulation carries out filtration slag by barrier film oil filter, obtains the change
Depressor oil；Preferably, the antioxidant is BHT and/or N- PAs.
10. the method that the edible vegetable oil according to any one of claim 1-9 prepares transformer oil, it is characterised in that bag
Include following steps：
S1, edible vegetable oil is warming up to into 30-40 DEG C, it is 25-30wt% that concentration is added dropwise under the stirring of 25-35r/min rotating speeds
Alkali lye, the consumption of alkali lye is the 0.28-0.33wt% of edible vegetable oil, complete in 12-14min be added dropwise, be continuously heating to 55-
65 DEG C, 5-10min is stirred with the rotating speed of 55-65r/min, then 30-35min is stirred with the rotating speed of 25-35r/min, it is quiet after cooling
6-7h is put, is isolated and obtain after Chinese honey locust alkali refining oil first product；
S2, the alkali refining for obtaining S1 oil first product are warming up to 55-65 DEG C, and stirring is lower to add the soft water that temperature is 65-75 DEG C, soft water
Consumption is the 15-20wt% of edible vegetable oil, completes to add water in 15-20min, 85-95 DEG C is continuously heating to, with 55-65r/min
Rotating speed stirring 10-15min, 4-5h is stood after cooling, obtain washing oily first product after water-oil separating；
S3, the washing for obtaining S2 oil first product are warming up to 75-85 DEG C, and stirring is lower to add the soft water that temperature is 85-95 DEG C, soft water
Consumption is the 10-15wt% of edible vegetable oil, completes to add water in 10-15min, and with the rotating speed of 55-65r/min 5-10min is stirred,
3-4h is stood after cooling, obtains washing oily end product after water-oil separating；
S4, the washing for obtaining S3 oil end product are heated under vacuo 100-110 DEG C and carry out vacuum dehydration, and dewatering time is 1.6-
1.8h, then atlapulgite is added under the rotating speed stirring of 60-70r/min, the consumption of atlapulgite is the 3.5- of edible vegetable oil
5.5wt%, filters after stirring 1.2-1.4h, obtains transformer oil first product；
S5, the transformer oil first product for obtaining S4 is pumped in extracting tower after being heated to 260-270 DEG C carries out depickling, and vacuum is
150-160Pa, oil outlet temperature is 230-240 DEG C, it is fuel-displaced after be cooled to 35-40 DEG C and filtered, add antioxidant, antioxygen
The consumption of agent is the 0.08-0.12wt% of edible vegetable oil, and after stirring at 50-70 DEG C, insulation passes through barrier film oil strain
Machine carries out filtration slag, obtains the transformer oil.
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| CN114058445A (en) * | 2021-10-29 | 2022-02-18 | 广东电网有限责任公司广州供电局 | Vegetable insulating oil and its purification method |
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