CN104593054A - Method for improving interfacial tension of mineral insulating oil - Google Patents
Method for improving interfacial tension of mineral insulating oil Download PDFInfo
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- CN104593054A CN104593054A CN201510052351.1A CN201510052351A CN104593054A CN 104593054 A CN104593054 A CN 104593054A CN 201510052351 A CN201510052351 A CN 201510052351A CN 104593054 A CN104593054 A CN 104593054A
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- Prior art keywords
- oil
- filter
- mineral insulating
- transformer
- vacuum
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G53/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
- C10G53/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only
- C10G53/08—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only including at least one sorption step
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/12—Electrical isolation oil
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Electrostatic Separation (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
Abstract
The invention discloses a method for improving interfacial tension of mineral insulating oil. The method comprises the following steps: 1 carrying out vacuum degassing and dewatering treatment on moisture in to-be-treated mineral insulating oil by virtue of a vacuum oil filter; 2 carrying out polar particle impurity treatment on the mineral insulating oil which is treated by the vacuum oil filter by virtue of an electrostatic oil filter; 3 carrying out regenerating treatment on the mineral insulating oil which is treated by the electrostatic oil filter machine by virtue of a regenerative adsorption oil filter, wherein corresponding indexes of the mineral insulating oil are firstly measured before the steps are carried out; and if the indexes conform to the regulation, the steps are omitted. The method has the characteristics of being simple in process, easy to operate and low in treatment cost. After the treatment through the method, polar particles and polar molecules in oil can be removed; the interfacial tension of the oil is improved; the problem that the oil is exchanged due to overproof interfacial tension can be avoided; the oil exchange cost is saved; and resource recycling is achieved.
Description
Technical field
The invention belongs to mineral insulating oil technical field, be specifically related to a kind of method improving mineral insulating oil interfacial tension.
Background technology
Mineral insulating oil refers in oil-filled electric equipments such as being applicable to transformer, reactor, mutual inductor, sleeve pipe, isolating switch, plays insulation, cooling and a class oil product of arc extinguishing effect.Because mineral insulating oil is primarily of various hydrocarbon composition, be therefore in operation by temperature, air, metal, electric field etc. affect can gradually deterioration.In order to better play mineral insulating oil in many-sided functions such as insulation, heat radiation and arc extinguishings, the quality of power system to oil product has strict requirement.
Interfacial tension is an important indicator of mineral insulating oil, it to reflection oil quality deterioration product and the solubility polar impurity that produces from solid insulating material quite responsive, its size can reflect the purity of fresh oil and run oil deterioration situation.For a certain operation oil product, if interfacial tension lowering, show oil quality deterioration or polluted by polar material, oily Semi-polarity substances content increases, and then has influence on the insulating property of transformer.The solution that current interfacial tension exceeds standard only has more renew oil, however more renew oil not only Financial cost is comparatively large, and the waste oil disposal changed is improper also can threaten to environment.The more important thing is more renew oil time, the transformer oil in transformer, the material such as insulation paper adsorbed cannot thoroughly be discharged, and the old oil therefore remained in transformer can pollute the fresh oil newly changed, and affects the quality of fresh oil.
Summary of the invention
For solving above-mentioned problems of the prior art, the object of the present invention is to provide a kind of method improving mineral insulating oil interfacial tension, after the method process, can except the polar particulate in deoiling and polar molecule, improve the interfacial tension of oil, the financial loss that avoiding changes oil causes, has saved the energy.
For achieving the above object, the technical solution adopted in the present invention is:
Improve a method for mineral insulating oil interfacial tension, comprise the steps:
Step 1: first whether the moisture measured in mineral insulating oil conforms with the regulations, if conform with the regulations, then directly carry out step 2, otherwise, vacuum oil-filter is used to carry out vacuum outgas processed to the moisture in pending mineral insulating oil, concrete grammar is: select flow to be 3000-9000L/h, heating power is the vacuum oil-filter of 36-72kW, the oil inlet pipe of vacuum oil-filter is connected to the fuel-displaced valve of transformer bottom, the oil outlet pipe of vacuum oil-filter is connected to the oil inlet valve at the top of transformer, start vacuum oil-filter, the well heater of adjustment vacuum oil-filter, oil temperature is made to be 30-70 DEG C, working vacuum degree≤133Pa, through circulating filtration process, until the moisture content of mineral insulating oil meets the standard gauge definite value of corresponding transformer voltage grade,
Step 2: whether the granule foreign first in measurement mineral insulating oil and greasy filth conform with the regulations, if conform with the regulations, directly carry out step 3, otherwise, electrostatic oil filter is used the mineral insulating oil after vacuum oil-filter process to be carried out to the process of granule foreign, concrete grammar is: select flow to be the electrostatic oil filter of 150-1000L/h, the oil inlet pipe of electrostatic oil filter is connected to the fuel-displaced valve of transformer bottom, the oil outlet pipe of electrostatic oil filter is connected to the oil inlet valve at the top of transformer, start electrostatic oil filter, the operating voltage of adjustment electrostatic oil filter is 11kV-14kV, oil temperature during operation is made to be 60-80 DEG C, through circulating filtration process, until the granularity of mineral insulating oil and greasy filth content meet the standard gauge definite value of corresponding transformer voltage grade,
Step 3: use regenerative adsorption oil filter to carry out manipulation of regeneration to the mineral insulating oil after the process of electrostatic oil filter, except the polar molecule in deoiling, concrete grammar is: select in-built high-performance micropore polar molecule adsorbent reactivation filter core to be that 3-6 props up, in regeneration filter core, high-performance micropore polar molecule adsorbent weight is the regenerative adsorption oil filter of 5-10kg, the oil inlet pipe of regenerative adsorption oil filter is connected to the fuel-displaced valve of transformer bottom, the oil outlet pipe of regenerative adsorption oil filter is connected to the oil inlet valve at the top of transformer, start regenerative adsorption oil filter, the flow adjusting regenerative adsorption oil filter is 1000-9000L/h, operating pressure≤2.0MPa, oil temperature during operation is made to be 20-60 DEG C, carry out circulating filtration process, if operating pressure exceeds prescribed value, then change regeneration filter core, until the interfacial tension of transformer oil meets the standard gauge definite value of corresponding transformer voltage grade.
The present invention has the advantages that technique is simple, easy handling, processing cost are low, after the method process, can except the polar particulate in deoiling and polar molecule, improve the interfacial tension of oil, more renew oil can be avoided because interfacial tension exceeds standard, save cost of changing oil, achieve the recycling of resource.
Embodiment
By embodiment, the present invention is described in further detail below.
Embodiment one:
The greasy filth of pending mineral insulating oil and granularity meet runs oil standard requirement.So save step 2, step 1 and step 3 is adopted to process.Detailed process is as follows:
The oil inlet pipe of vacuum oil-filter (flow 6000L/h) is connected to the fuel-displaced valve of transformer bottom, the oil outlet pipe of vacuum oil-filter is connected to the oil inlet valve at the top of transformer, start vacuum oil-filter, adjust the power of the well heater of vacuum oil-filter, oil temperature is made to remain on 50 DEG C, adjustment working vacuum degree is 130Pa, through circulating filtration process, stops when the moisture content of detection transformer oil reaches 5mg/L.Then vacuum oil-filter is removed, the oil inlet pipe connecing regenerative adsorption oil filter is connected to the fuel-displaced valve of transformer bottom, the oil outlet pipe of regenerative adsorption oil filter is connected to the oil inlet valve at the top of transformer, (flow of regenerative adsorption oil filter is flow 6000L/h to start regenerative adsorption oil filter, oil temperature is 50 DEG C, operating pressure is≤2.0MPa), carry out circulating filtration process, if operating pressure exceeds 1.8MPa, then change regeneration filter core, amount to more renew cartridge 3 to overlap, before and after check processing, the Comparative result of transformer oil sees the following form 1.
Table 1
Case study on implementation two:
The moisture of pending transformer oil meets the requirement of operation oil standard.So save step 1, step 2 and step 3 is adopted to process.Detailed process is as follows:
The oil inlet pipe of electrostatic oil filter (flow 800L/h) is connected to the fuel-displaced valve of transformer bottom, the oil outlet pipe of electrostatic oil filter is connected to the oil inlet valve at the top of transformer, start electrostatic oil filter, the operating voltage of adjustment electrostatic oil filter is 12kV-13kV, through circulating filtration process, until the granularity of transformer oil is less than NAS16383 level and greasy filth content lower than 0.02%.Then electrostatic oil filter is removed, the oil inlet pipe connecing regenerative adsorption oil filter is connected to the fuel-displaced valve of transformer bottom, the oil outlet pipe of regenerative adsorption oil filter is connected to the oil inlet valve at the top of transformer, (flow of regenerative adsorption oil filter is flow 8000L/h to start regenerative adsorption oil filter, oil temperature is 55 DEG C, operating pressure is≤2.0MPa), carry out circulating filtration process, if operating pressure exceeds 1.8MPa, then change regeneration filter core, amount to more renew cartridge 4 to overlap, before and after check processing, the Comparative result of transformer oil sees the following form 2:
Table 2
Case study on implementation three:
The indices of pending mineral insulating oil all exceeds standard, and adopts step 1, step 2 and step 3 to process.Detailed process is as follows:
The oil inlet pipe of vacuum oil-filter (flow 5000L/h) is connected to the fuel-displaced valve of transformer bottom,
The oil outlet pipe of vacuum oil-filter is connected to the oil inlet valve at the top of transformer, start vacuum oil-filter, adjust the power of the well heater of vacuum oil-filter, oil temperature is made to remain on 50 DEG C, adjustment working vacuum degree is 125Pa, through circulating filtration process, stop when the moisture content of detection transformer oil reaches 4mg/L.Then vacuum oil-filter is removed, the oil inlet pipe of electrostatic oil filter (flow 300L/h) is connected to the fuel-displaced valve of transformer bottom, the oil outlet pipe of electrostatic oil filter is connected to the oil inlet valve at the top of transformer, start electrostatic oil filter, the operating voltage of adjustment electrostatic oil filter is 11kV-12kV, through circulating filtration process, until the granularity of transformer oil is less than NAS16383 level and greasy filth content lower than 0.02%.Then electrostatic oil filter is removed, the oil inlet pipe connecing regenerative adsorption oil filter is connected to the fuel-displaced valve of transformer bottom, the oil outlet pipe of regenerative adsorption oil filter is connected to the oil inlet valve at the top of transformer, (flow of regenerative adsorption oil filter is flow 7000L/h to start regenerative adsorption oil filter, oil temperature is 55 DEG C, operating pressure is≤2.0MPa), carry out circulating filtration process, if operating pressure exceeds 1.8MPa, then change regeneration filter core, amount to more renew cartridge 2 to overlap, before and after check processing, the Comparative result of transformer oil sees the following form 3
Table 3
Claims (1)
1. improve a method for mineral insulating oil interfacial tension, it is characterized in that: comprise the steps:
Step 1: first whether the moisture measured in mineral insulating oil conforms with the regulations, if conform with the regulations, then directly carry out step 2, otherwise, vacuum oil-filter is used to carry out vacuum outgas processed to the moisture in pending mineral insulating oil, concrete grammar is: select flow to be 3000-9000L/h, heating power is the vacuum oil-filter of 36-72kW, the oil inlet pipe of vacuum oil-filter is connected to the fuel-displaced valve of transformer bottom, the oil outlet pipe of vacuum oil-filter is connected to the oil inlet valve at the top of transformer, start vacuum oil-filter, the heater temperature of adjustment vacuum oil-filter is 30-70 DEG C, working vacuum degree≤133Pa, through circulating filtration process, until the moisture content of mineral insulating oil meets the standard gauge definite value of corresponding transformer voltage grade,
Step 2: whether the polar particulate impurity first in measurement mineral insulating oil and greasy filth conform with the regulations, if conform with the regulations, directly carry out step 3, otherwise, electrostatic oil filter is used the mineral insulating oil after vacuum oil-filter process to be carried out to the process of polar particulate impurity, concrete grammar is: select flow to be the electrostatic oil filter of 150-1000L/h, the oil inlet pipe of electrostatic oil filter is connected to the fuel-displaced valve of transformer bottom, the oil outlet pipe of electrostatic oil filter is connected to the oil inlet valve at the top of transformer, start electrostatic oil filter, the operating voltage of adjustment electrostatic oil filter is 11kV-14kV, oil temperature during operation is made to be 60-80 DEG C, through circulating filtration process, until the granularity of mineral insulating oil and greasy filth content meet the standard gauge definite value of corresponding transformer voltage grade,
Step 3: use regenerative adsorption oil filter to carry out manipulation of regeneration to the mineral insulating oil after the process of electrostatic oil filter, except the polar molecule in deoiling, concrete grammar is: select in-built high-performance micropore polar molecule adsorbent reactivation filter core to be that 3-6 props up, in regeneration filter core, high-performance micropore polar molecule adsorbent weight is the regenerative adsorption oil filter of 5-10kg, the oil inlet pipe of regenerative adsorption oil filter is connected to the fuel-displaced valve of transformer bottom, the oil outlet pipe of regenerative adsorption oil filter is connected to the oil inlet valve at the top of transformer, start regenerative adsorption oil filter, the flow adjusting regenerative adsorption oil filter is 1000-9000L/h, operating pressure≤2.0MPa, oil temperature during operation is made to be 20-60 DEG C, carry out circulating filtration process, if operating pressure exceeds prescribed value, then change regeneration filter core, until the interfacial tension of transformer oil meets the standard gauge definite value of corresponding transformer voltage grade.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510052351.1A CN104593054B (en) | 2015-01-30 | 2015-01-30 | A kind of method improving mineral insulating oil interfacial tension |
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| CN201510052351.1A CN104593054B (en) | 2015-01-30 | 2015-01-30 | A kind of method improving mineral insulating oil interfacial tension |
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| CN104593054B CN104593054B (en) | 2016-09-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783039A (en) * | 2016-12-02 | 2017-05-31 | 国网四川省电力公司电力科学研究院 | Hybrid insulation systems oil-filled transformer and its structural optimization method |
| CN107287016A (en) * | 2017-07-10 | 2017-10-24 | 西安热工研究院有限公司 | The oxygen-enriched super renovation process of wind power gear oil and regenerator |
| CN109671555A (en) * | 2018-11-14 | 2019-04-23 | 沈阳大型电力变压器维修有限公司 | A kind of oil filtering unit for EHV transformer electrification oil strain |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055381A (en) * | 1991-04-09 | 1991-10-16 | 吉林市通用机械情报研究所 | Super purifier of insulating oil |
| CN2122865U (en) * | 1992-04-05 | 1992-11-25 | 谭书贵 | Multi-funcitonal insulating oil regenerator |
| CN2179873Y (en) * | 1993-05-31 | 1994-10-19 | 上海交通大学 | Used oil purifying regenerator for mineral oil |
| CN2181982Y (en) * | 1993-12-11 | 1994-11-09 | 山东省电力试验研究所 | Purifying treatment apparatus for oils |
| CN2589048Y (en) * | 2002-10-28 | 2003-12-03 | 齐齐哈尔电业局 | Electricity purifying insulating oil purifying installation |
-
2015
- 2015-01-30 CN CN201510052351.1A patent/CN104593054B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055381A (en) * | 1991-04-09 | 1991-10-16 | 吉林市通用机械情报研究所 | Super purifier of insulating oil |
| CN2122865U (en) * | 1992-04-05 | 1992-11-25 | 谭书贵 | Multi-funcitonal insulating oil regenerator |
| CN2179873Y (en) * | 1993-05-31 | 1994-10-19 | 上海交通大学 | Used oil purifying regenerator for mineral oil |
| CN2181982Y (en) * | 1993-12-11 | 1994-11-09 | 山东省电力试验研究所 | Purifying treatment apparatus for oils |
| CN2589048Y (en) * | 2002-10-28 | 2003-12-03 | 齐齐哈尔电业局 | Electricity purifying insulating oil purifying installation |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783039A (en) * | 2016-12-02 | 2017-05-31 | 国网四川省电力公司电力科学研究院 | Hybrid insulation systems oil-filled transformer and its structural optimization method |
| CN106783039B (en) * | 2016-12-02 | 2018-04-24 | 国网四川省电力公司电力科学研究院 | The structural optimization method of hybrid insulation systems oil-immersed transformer |
| CN107287016A (en) * | 2017-07-10 | 2017-10-24 | 西安热工研究院有限公司 | The oxygen-enriched super renovation process of wind power gear oil and regenerator |
| CN109671555A (en) * | 2018-11-14 | 2019-04-23 | 沈阳大型电力变压器维修有限公司 | A kind of oil filtering unit for EHV transformer electrification oil strain |
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| CN104593054B (en) | 2016-09-28 |
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