CN107149792B - The removal methods of plasticiser in a kind of insulating oil - Google Patents
The removal methods of plasticiser in a kind of insulating oil Download PDFInfo
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- CN107149792B CN107149792B CN201710563825.8A CN201710563825A CN107149792B CN 107149792 B CN107149792 B CN 107149792B CN 201710563825 A CN201710563825 A CN 201710563825A CN 107149792 B CN107149792 B CN 107149792B
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- plasticiser
- insulating oil
- oil
- cerium
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- 239000004014 plasticizer Substances 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000001179 sorption measurement Methods 0.000 claims abstract description 42
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 27
- 239000000741 silica gel Substances 0.000 claims abstract description 27
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 27
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000002131 composite material Substances 0.000 claims abstract description 21
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 21
- 238000001914 filtration Methods 0.000 claims abstract description 18
- 239000002808 molecular sieve Substances 0.000 claims description 25
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 25
- 229910052684 Cerium Inorganic materials 0.000 claims description 20
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 19
- 238000010521 absorption reaction Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000011068 loading method Methods 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 238000001354 calcination Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 150000002148 esters Chemical class 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 150000000703 Cerium Chemical class 0.000 claims description 2
- 238000004090 dissolution Methods 0.000 claims description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N monobenzene Natural products C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 abstract description 13
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 100
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 16
- 239000000463 material Substances 0.000 description 15
- 230000032683 aging Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 description 4
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- -1 cerium ion Chemical class 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000035987 intoxication Effects 0.000 description 1
- 231100000566 intoxication Toxicity 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 125000005498 phthalate group Chemical group 0.000 description 1
- 150000003021 phthalic acid derivatives Chemical class 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/18—Synthetic zeolitic molecular sieves
- B01J20/186—Chemical treatments in view of modifying the properties of the sieve, e.g. increasing the stability or the activity, also decreasing the activity
-
- 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
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0016—Working-up used lubricants to recover useful products ; Cleaning with the use of chemical agents
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
Abstract
The invention discloses a kind of removal methods of plasticiser in insulating oil, it is characterized in that, insulating oil to be processed is removed into the plasticiser in insulating oil again successively through silica gel, activated alumina, the sial composite oxides adsorption treatment containing rare earth after vacuum oil filtering is handled；The method of the present invention can be used for the removing of the O-phthalic acids plasticiser of transformer oil.The present invention can effectively remove phthalate plasticiser in transformer oil, and simplify treatment process, quite convenient for carrying out phthalate plasticiser removing processing work in transformer oil in substation field, so that it is expected to possess potential economic benefit.
Description
Technical field
The invention belongs to phthalate plasticisers in insulating oil processing technology field more particularly to a kind of insulating oil
Removal methods.
Background technique
Insulating oil is the important component of operating transformer, can play the work of insulation, cooling, arc extinguishing and information carrier
With.The materials such as insulating paper, iron core, copper coil are immersed in insulating oil, can be protected in transformer life cycle 30~50 years
It holds steady in a long-term.But the high molecular material largely used during transformer production, such as rubber seal, insulated paint, tree
Rouge, adhesive etc., with being continuously increased for runing time, immersion is heated in the oil and for a long time, in these high molecular materials
Plasticiser can be gradually dissolved into transformer oil, and transformer oil dielectric loss is caused to increase.Plasticiser, also known as plasticizer are works
The high molecular material auxiliary agent being widely used in industry, can significantly improve the flexibility of material, it is each to be widely used in national economy
In the thousands of kinds of products such as field, including plastics, rubber, adhesive, cellulose, resin, medical instrument, cable.Wherein, adjacent
Phthalates are the most common plasticiser types, daily and be industrially widely used.
" a kind of transformer oil dielectric loss increases point of reason according to disclosed in the Chinese patent literature of CN105784877A
Analysis method ", the plasticiser contained in transformer oil is mainly phthalate, wherein with dibutyl phthalate content
Highest.Phthalate plasticiser will cause transformer oil dielectric loss increase, threaten transformer safety stable operation.
It needs by the phthalate plasticiser removing in oil, to restore oil property.
Summary of the invention
The technical problem to be solved by the present invention is to lead to oil for the plasticiser generated in newfound operating transformer oil
Dielectric loss increases, and provides a kind of removal methods of plasticiser in insulating oil.It is required that this method can ensure the case where transformer safety
Under in substation carry out continuous circulation processing, treatment effeciency is high.
The technical scheme is that a kind of removal methods of plasticiser in insulating oil are provided, by insulating oil to be processed
Again successively through silica gel, activated alumina, the sial composite oxides adsorption treatment containing rare earth, removing after vacuum oil filtering is handled
Plasticiser in insulating oil.
In the present invention, insulating oil to be processed is handled to removing moisture under vacuum conditions in advance, is then inhaled again through silica gel
Attached processing；For insulating oil after silica gel absorption again through activated alumina adsorption treatment, the insulating oil after activated alumina absorption is last
The sial composite oxides adsorption treatment containing rare earth is passed through again, passes through each suction type, cooperation-removal phthalic acid
Esters plasticiser.In addition, the inventors discovered that, the absorption of the sequence successively carried out can further cooperate with guarantee, promote modeling
The adsorption effect of agent.The present invention cooperates the subsequent silica gel successively carried out, active oxidation by the vacuum processing, again
Three absorption of aluminium, sial composite oxides containing rare earth, the plasticiser that can be unexpectedly substantially reduced in insulating oil contain
Amount.
Preferably, during vacuum oil filtering, vacuum degree control in -0.06~-0.095MPa, vacuum oil filtering processing 23~
25 hours；Further preferably for 24 hours.Under the vacuum condition, help to ensure dehydrating effect, in turn, is further conducive to plasticizing
The removing of agent.
Preferably, moisture content is lower than 20mg/kg in control vacuum oil filtering treated insulating oil.Control is in the moisture
Under range, being more advantageous to prevents moisture to the intoxication of the sial composite oxides containing rare earth, and then is further conducive to modeling
The removing of agent.
Preferably, removal methods of the present invention, by vacuum oil filtering, treated that insulating oil successively flows in series through silicon
Glue adsorption column, activated alumina adsorption column and the sial composite oxides adsorption column containing rare earth；It finally handles, obtains using filter
Remove the insulating oil of plasticiser.
Currently preferred method can reach the effect of continuous treatment.
Preferably, the sial composite oxides containing rare earth are negative and are loaded with the molecular sieve of rare earth element.
The molecular sieve is preferably mesopore molecular sieve.
Mesopore molecular sieve finger-hole diameter molecular sieve between 2-50nm.
Preferably, the mesopore molecular sieve is mesostructured material.
The rare earth element is preferably cerium.
Preferably, the sial composite oxides of the rare earth be cerium-carrying mesopore molecular sieve (present invention is also referred to as
Mesopore molecular sieve containing cerium)；The further preferably mesostructured material of cerium-carrying.
Theoretically the load capacity of rare earth element is higher, plasticiser removal effect is better.
Preferably, the load capacity of rare earth element is greater than or equal to 1wt% in the sial composite oxides containing rare earth；
Further preferably 1~8wt%.Under the load capacity, high plasticiser Adsorption requirement can be met, and processing cost is low.
In the present invention, the load capacity is that the oxide of rare earth element accounts for the weight percent of sial composite oxides.
Further preferably, in the mesopore molecular sieve of cerium-carrying, the load capacity of cerium is greater than or equal to 1wt%；It is further excellent
It is selected as 1~8wt%.The load capacity of the cerium refers to that cerium oxide accounts for the weight percent of mesopore molecular sieve.
Most preferably, in the mesopore molecular sieve of cerium-carrying, the load capacity of cerium is 5~8wt%.
In the present invention, the preparation method of the mesopore molecular sieve of the cerium-carrying is for example are as follows:
Water-soluble cerium salt is dissolved in water dissolution, obtains cerium solution；Molecular sieve is added into cerium solution, controls the load of cerium
Amount；Through calcination processing at drying, 400~500 DEG C after load, the mesopore molecular sieve of the cerium-carrying is obtained.
Still more preferably, the sial composite oxides of the rare earth are the mesostructured material of cerium-carrying.It is excellent
The rare-earth element cerium ion of choosing has 4 valence positive charges, has superior charge polarity, is removing phthalate modeling
The core of agent.
The method of the present invention can handle any insulating oil containing plasticiser, be especially suitable for processing transformer oil.
In the present invention, the plasticiser serialization that the preferred method is applied to transformer oil is removed, it will be to be processed
The insulating oil of transformer is handled through vacuum oil filtering, then successively flows continuously through adsorption column filled with silica gel, active oxidation again
The adsorption column of the mesostructured material of the adsorption column and cerium-carrying of aluminium；Then again by the mesostructured material of cerium-carrying
The efflux of adsorption column is back to transformer body after filtration treatment.
The method of the present invention can be applied to the phthalate plasticiser in insulating oil.
In the present invention, insulating oil further goes moisture removal, silica gel absorption first with silica gel Contact-sorption after vacuum oil filtering processing
Insulating oil afterwards with activated alumina Contact-sorption, removes the polar substances that aging generates in insulating oil again；By activated alumina
Insulating oil after absorption again with the mesostructured material Contact-sorption of cerium-carrying.
Preferably, the loading of silica gel is 30~50kg in silica gel adsorption column, wherein pillar height is 0.5~1.5m.
Preferably, the loading of activated alumina is 50~100kg in activated alumina adsorption column, wherein pillar height is
0.5~1.5m.
Preferably, in the sial composite oxides adsorption column containing rare earth, the sial composite oxides containing rare earth
Loading is 200~300kg, and wherein pillar height is 0.5~1.5m.
Preferably, adjust the temperature of insulating oil after vacuum oil filtering processing to after 50~60 DEG C again with silica gel Contact-sorption.
Preferably, adjusting the temperature of the insulating oil after silica gel absorption to contacting suction with activated alumina again after 50~60 DEG C
It is attached.
Preferably, adjust the temperature of the insulating oil after activated alumina absorption to after 50~60 DEG C again with include rare earth
Sial composite oxides Contact-sorption.
During continuous treatment of the present invention, the insulation oil temperature of control input silica gel adsorption column is 50~60 DEG C；Input
The temperature of activated alumina adsorption column is 50~60 DEG C, and the temperature of sial composite oxides adsorption column of the input comprising rare earth is 50
~60 DEG C.
Preferably, the filter medium that filter process uses is precision Filter element in filter process；The precision Filter element
Aperture is 1~3 μm.
After precision Filter element of the insulating oil after the sial composite oxides absorption containing rare earth by the preferred gap of institute
After processing, the insulating oil for being stripped of plasticiser is obtained, it can directly by this, treated that insulating oil is back to transformer body.
Preferably, the flow that insulating oil flows through each adsorption column is 30~100L/min.
The removal methods of phthalate plasticiser in a kind of more preferably insulating oil of the invention, including following step
It is rapid:
(1) vacuum oil filtering processing is carried out to the transformer oil handled, until water content in oil content is lower than 20mg/
kg；
(2) it when carrying out phthalate plasticiser removing in transformer oil, first passes through equipped with 30~50kg silica gel
Adsorption column, pillar height are 0.5~1.5m, further remove moisture removal, 50~60 DEG C of temperature；
(3) transformer oil after silica gel absorption is passed through into 50~100kg activated alumina adsorption column, pillar height 0.5
~1.5m, remove transformer oil in aging generate polar substances, 50~60 DEG C of temperature；
(4) transformer oil after activated alumina adsorbs is contained to the mesopore molecular sieve of cerium by 200~300kg
MCM-41 pillar (cerium load capacity is 5~8wt%), pillar height are 0.5~1.5m, 50~60 DEG C of temperature；
(5) transformer body is returned to after the precision Filter element that processed transformer oil is 1~3 μm by aperture, processed
Transformer flow should be controlled in 30~100L/min in journey, to guarantee that reaction has time enough that can sufficiently carry out.
Beneficial effect
The method of invention can effectively remove phthalate plasticiser in transformer oil.Using the present invention
Method can simplify treatment process, quite convenient for substation field carry out transformer oil in phthalate plasticiser
Removing processing work.These advantages of the invention, so that the removal methods of phthalate plasticiser are in reality in insulating oil
Border is provided with wider array of application range in promoting the use of, so that it is expected to possess potential economic benefit.
It is found by test, the present invention program has unexpectedly effect, wherein the oily dielectric loss decline 80% of insulating oil
More than, the removal efficiency of plasticiser is higher than 96%.
Specific embodiment:
Embodiment 1:
The present embodiment use the mesostructured material containing cerium the preparation method comprises the following steps: a certain amount of cerous nitrate is molten
Solution (mass ratio of cerous nitrate and water is 1: 5) into deionized water, is then added molecular sieve MCM-41, and stirring is filtered after 2 hours,
120 DEG C drying 24 hours, 450 DEG C after calcining 4 hours to obtain the final product, wherein CeO2Mass concentration be molecular sieve MCM-41 8%.
The 110kV 21 years transformer station high-voltage side bus time of the good people No. 1, oil in dibutyl phthalate concentration be 18.5mg/kg, oil
Dielectric loss is 2.1%, 20 tons of oily weight, carries out oil processing by following below scheme to this transformer:
(1) processing of vacuum (- 0.06~-0.095MPa) oil strain is carried out for 24 hours to transformer oil, through detecting water content in oil content
For 18mg/kg；
(2) by the transformer oil after vacuum oil filtering, by the adsorption column equipped with 50kg silica gel, (pillar height is 0.5~1.5m；Stream
Amount is 30~100L/min), further remove moisture removal, temperature 60 C；
(3) by the transformer oil after silica gel absorption by 100kg activated alumina adsorption column (pillar height be 0.5~
1.5m；Flow is 30~100L/min), remove the polar substances that aging generates in transformer oil, temperature 60 C；
(4) by the transformer oil after reaction by the mesostructured material containing cerium made from 300kg the present embodiment
(pillar height is 0.5~1.5m to pillar；Flow is 30~100L/min)；
(5) processed transformer oil is that transformer body is returned to after 1 μm of precision Filter element by hole, in treatment process
Transformer flow 50L/min.
Dibutyl phthalate concentration is detected as 0.7mg/kg, oily dielectric loss 0.4%, phthalic acid in oil after processing
Dibutyl ester removal efficiency is 96%.
Embodiment 2
The present embodiment use the mesostructured material containing cerium the preparation method comprises the following steps: a certain amount of cerous nitrate is molten
Solution (mass ratio of cerous nitrate and water is 1: 5) into deionized water, is then added molecular sieve MCM-41, and stirring is filtered after 2 hours,
120 DEG C drying 24 hours, 450 DEG C after calcining 4 hours to obtain the final product, wherein CeO2Mass concentration be molecular sieve MCM-41 1%.
The 15 years transformer station high-voltage side bus time of the pavilion 110kV Huang Jia 1, oil in dibutyl phthalate concentration be 15.9mg/kg,
Oily dielectric loss is 1.9%, 23 tons of oily weight, carries out oil processing by following below scheme to this transformer:
(1) processing of vacuum (- 0.06~-0.095MPa) oil strain is carried out for 24 hours to transformer oil, through detecting water content in oil content
For 18mg/kg；
(2) by the transformer oil after vacuum oil filtering, by the adsorption column equipped with 50kg silica gel, (pillar height is 0.5~1.5m；Stream
Amount is 30~100L/min), further remove moisture removal, temperature 60 C；
(3) by the transformer oil after silica gel absorption by 100kg activated alumina adsorption column (pillar height be 0.5~
1.5m；Flow is 30~100L/min), remove the polar substances that aging generates in transformer oil, temperature 60 C；
(4) by the transformer oil after reaction by the mesostructured material containing cerium made from 300kg the present embodiment
(pillar height is 0.5~1.5m to pillar；Flow is 30~100L/min)
(5) processed transformer oil is that transformer body is returned to after 1 μm of precision Filter element by hole, in treatment process
Transformer flow 50L/min.
Dibutyl phthalate concentration is detected as 4.8mg/kg, oily dielectric loss 0.8%, phthalic acid in oil after processing
Dibutyl ester removal efficiency is 69.8%.
Comparative example 1
Laboratory lab scale is carried out to No. 1 transformer oil of the good people of 110kV, dibutyl phthalate concentration is in oil
18.5mg/kg, oily dielectric loss are 2.1%, 20 kilograms of formation testing, carry out oil processing by following below scheme to this transformer:
(1) processing of vacuum (- 0.06~-0.095MPa) oil strain is carried out for 24 hours to transformer oil, through detecting water content in oil content
For 16mg/kg；
(2) transformer oil after vacuum oil filtering is passed through into adsorption column (the pillar height 0.2m equipped with 0.5kg silica gel；Flow is
30~100L/min), further remove moisture removal, temperature 60 C；
(3) transformer oil after silica gel absorption is passed through into 1kg activated alumina adsorption column (pillar height 0.2m；Flow
For 30~100L/min), the polar substances that aging generates in transformer oil, temperature 60 C are removed；
Dibutyl phthalate concentration is detected as 13.8mg/kg, oily dielectric loss 1.2%, O-phthalic in oil after processing
Dibutyl phthalate removal efficiency is 25.4%.
Claims (9)
1. the removal methods of plasticiser in a kind of insulating oil, which is characterized in that handle insulating oil to be processed through vacuum oil filtering
The plasticizing in insulating oil is removed successively through silica gel, activated alumina, the sial composite oxides adsorption treatment containing rare earth again afterwards
Agent；
Sial composite oxides containing rare earth are the mesopore molecular sieve of cerium-carrying.
2. the removal methods of plasticiser in insulating oil as described in claim 1, which is characterized in that by vacuum oil filtering, treated
Insulating oil successively flows in series through silica gel adsorption column, activated alumina adsorption column and the sial composite oxides absorption containing rare earth
Column；It is finally handled using filter, the insulating oil of plasticiser must be removed.
3. the removal methods of plasticiser in insulating oil as claimed in claim 1 or 2, which is characterized in that at control vacuum oil filtering
Moisture content is lower than 20mg/kg in insulating oil after reason.
4. the removal methods of plasticiser in insulating oil as described in claim 1, which is characterized in that the mesopore molecular sieve of cerium-carrying
In, the load capacity of cerium is greater than or equal to 1wt%.
5. the removal methods of plasticiser in insulating oil as described in claim 1, which is characterized in that the mesopore molecular sieve of cerium-carrying
In, the load capacity of cerium is 1~8wt%.
6. the removal methods of plasticiser in insulating oil as described in claim 4 or 5, which is characterized in that the cerium-carrying
Mesopore molecular sieve the preparation method comprises the following steps:
Water-soluble cerium salt is dissolved in water dissolution, obtains cerium solution；Molecular sieve is added into cerium solution, controls the load capacity of cerium；It is negative
Through calcination processing at drying, 400~500 DEG C after load, the mesopore molecular sieve of the cerium-carrying is obtained.
7. the removal methods of plasticiser in insulating oil as claimed in claim 1 or 2, which is characterized in that adjust at vacuum oil filtering
After reason the temperature of insulating oil to after 50~60 DEG C again with silica gel Contact-sorption；
The temperature of insulating oil after adjusting silica gel absorption to after 50~60 DEG C again with activated alumina Contact-sorption；
The temperature of insulating oil after adjusting activated alumina absorption to after 50~60 DEG C again with the sial combined oxidation comprising rare earth
Object Contact-sorption.
8. the removal methods of plasticiser in insulating oil as claimed in claim 2, which is characterized in that in silica gel adsorption column, silica gel
Loading be 30~50kg, wherein pillar height be 0.5~1.5m；
In activated alumina adsorption column, the loading of activated alumina is 50~100kg, and wherein pillar height is 0.5~1.5m；
In sial composite oxides adsorption column containing rare earth, the loadings of the sial composite oxides containing rare earth is 200~
300kg, wherein pillar height is 0.5~1.5m；
In filter process, the filter medium that filter process uses is precision Filter element；The aperture of the precision Filter element is 1~3 μm.
9. the removal methods of plasticiser in insulating oil as described in claim 1, which is characterized in that the plasticiser is adjacent benzene
Diformic ester plasticiser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710563825.8A CN107149792B (en) | 2017-07-11 | 2017-07-11 | The removal methods of plasticiser in a kind of insulating oil |
Applications Claiming Priority (1)
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| 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 |
| CN111974343B (en) * | 2020-07-28 | 2023-04-07 | 江苏方天电力技术有限公司 | Adsorbent for reducing dielectric loss of mineral transformer oil and preparation method thereof |
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