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UTILITY SERVICES AND TECHNOLOGIESUTILITY SERVICES AND TECHNOLOGIES--UTILITY SERVICES AND TECHNOLOGIES-GAS ANALYSIS, MANAGEMENT, AND RECYCLINGGAS ANALYSIS, MANAGEMENT, AND RECYCLINGGAS ANALYSIS, MANAGEMENT, AND RECYCLING
IMPLEMENTATION OFIMPLEMENTATION OFTREATMENT & RECOVERY OFTREATMENT & RECOVERY OF
THE SF6 GAS CONTAINING A HIGHTHE SF6 GAS CONTAINING A HIGHAMOUNT OF DECOMPOSITIONAMOUNT OF DECOMPOSITION
PRODUCTS DUE TO HIGHPRODUCTS DUE TO HIGHVOLTAGE ELECTRICALVOLTAGE ELECTRICAL
INTERRUPTIONSINTERRUPTIONS
J.LJ.L.. BessedeBessede, E., E. HuetHuet, G.F. Montillet, ARE, G.F. Montillet, AREJ.L. Bessede, E. Huet, G.F. Montillet, AREVA T&D.VA T&D.VA T&D.
E.Barbier, J.E.Barbier, J. MicozziMicozzi, AVANTEC., AVANTEC.E.Barbier, J. Micozzi, AVANTEC.
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TABLE OF CONTENTSTABLE OF CONTENTSTABLE OF CONTENTS
11 -- The Impact of SFThe Impact of SF1 - The Impact of SF6 on the Environment66 on the Environmenton the Environment22 -- The AREVA T&D / AVANTEC Procedure for SFThe AREVA T&D / AVANTEC Procedure for SF2 - The AREVA T&D / AVANTEC Procedure for SF666Recovery & RecyclingRecovery & RecyclingRecovery & Recycling
3 - Gas Analysis33 -- Gas AnalysisGas Analysis
44 -- Handling of SFHandling of SF4 - Handling of SF666
55 -- SFSF5 - SF6 Purification Techniques66 Purification TechniquesPurification Techniques
66 -- Destruction & AssessmentDestruction & Assessment6 - Destruction & Assessment
77
--
ConclusionsConclusions
7 - Conclusions
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UTILITY SERVICES AND TECHNOLOGIESUTILITY SERVICES AND TECHNOLOGIES--UTILITY SERVICES AND TECHNOLOGIES-GAS ANALYSIS, MANAGEMENT, AND RECYCLINGGAS ANALYSIS, MANAGEMENT, AND RECYCLINGGAS ANALYSIS, MANAGEMENT, AND RECYCLING
1 - The Impact of SF11 -- The Impact of SThe Impact of SF6
on the Environment66
on the Environmenton the Environment
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Impact of SF6 on the environmentImpact of SFImpact of SF66 on the environmenton the environment
SFSF66 GWP 22200GWP 22200(IPCC 2001)(IPCC 2001)
SFSF66AND ELECTRICITY SECTOR:AND ELECTRICITY SECTOR:
O.1O.1 % of man made GWP gases% of man made GWP gases
Contribution of electricity sector: 0.012 %Contribution of electricity sector: 0.012 %W&E European electricity contribution: 0.008 %W&E European electricity contribution: 0.008 %
* Source CAPIEL
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Life Cycle Assessment (LCA)Life Cycle Assessment (LCA)
LCA of medium voltage network:
LCA of medium voltage network:Major global warming is due toMajor global warming is due to
the energy losses during the lifethe energy losses during the life
of the equipment.of the equipment.
Ref: Life Cycle Assessment: SF6-GIS technology for Power Distribution Medium
Voltage Study commissioned by ABB, AREVA T&D, EnBW Regional, RWE
Energies, SIEMENS, SOLVAY.
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Life Cycle Assessment (2)Life Cycle Assessment (2)
LCA for High Voltage NetworkLCA for High Voltage NetworkStudies show that the totalStudies show that the totalenvironment impact of Airenvironment impact of Air
Insulated Switchgear is higherInsulated Switchgear is higher
than Gas Insulated Substations.than Gas Insulated Substations.
The Switchgear represents lessThe Switchgear represents less
than 10% of the total networksthan 10% of the total networks
Global Warming Impact.Global Warming Impact.
Ref: Life Cycle Assessment: SF6-GIS technology for Power Distribution Medium
Voltage Study commissioned by ABB, EnBW Regional, RWE Energies,
SIEMENS, & SOLVAY.
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Electrical IndustryElectrical Industry
Electrical Initiatives to Reduce SFElectrical Initiatives to Reduce SF66 EmissionsEmissions- Improvement of the Gas handling- Improvement of the Gas handlingprocedure.procedure.- Systematic gas re-uses.- Systematic gas re-uses.- Voluntary emission reduction- Voluntary emission reductionprograms.programs.
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Electrical Industry InitiativesElectrical Industry Initiatives
WG B3.02 TF 01 GuideWG B3.02 TF 01 Guide
to SFto SF66 Handling thenHandling then
became SFbecame SF66 RecyclingRecyclingGuide. Brochure 234.Guide. Brochure 234.
IEC Technical Report 61634 aboutIEC Technical Report 61634 about
Use and Handling of SFUse and Handling of SF66 in HVin HVSwitchgear and Control gear. UnderSwitchgear and Control gear. Under
revision.revision.
IEC 60 376 Under revision. (2005)IEC 60 376 Under revision. (2005)IEC 60 480 Ed 2. Oct. 2004IEC 60 480 Ed 2. Oct. 2004
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Evolution of the IEC StandardsEvolution of the IEC Standards
Evolution of the StandardsEvolution of the Standards
Improvement in SFImprovement in SF66 recoveryrecovery
and on site purificationand on site purification
User Analysis on SiteUser Analysis on Site
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Electrical Industry InitiativesElectrical Industry Initiatives
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UTILITY SERVICES AND TECHNOLOGIESUTILITY SERVICES AND TECHNOLOGIES--UTILITY SERVICES AND TECHNOLOGIES-GAS ANALYSIS, MANAGEMENT, AND RECYCLINGGAS ANALYSIS, MANAGEMENT, AND RECYCLINGGAS ANALYSIS, MANAGEMENT, AND RECYCLING
22 -- The AREVA T&D / AVANTEC ProcedureThe AREVA T&D / AVANTEC Procedure2 - The AREVA T&D / AVANTEC Procedure for SF6 Recovery & Recyclingfor SFfor SF66 Recovery & RecyclingRecovery & Recycling
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AREVA T&D / AVANTEC Procedure for
Recovery & Recycling
AREVA T&D / AVANTEC Procedure forRecovery & Recycling
Recycling of SF6 and its re-useRecycling of SF6 and its re-use
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Normal Current Interruption in SF6Normal Current Interruption in SFNormal Current Interruption in SF66
Reaction diagram showing the decomposition of stableReaction diagram showing the decomposition of stableReaction diagram showing the decomposition of stableproductsproductsproducts
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Normal Current Interruption in SF6Normal Current Interruption in SFNormal Current Interruption in SF66
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UTILITY SERVICES AND TECHNOLOGIESUTILITY SERVICES AND TECHNOLOGIES--UTILITY SERVICES AND TECHNOLOGIES-GAS ANALYSIS, MANAGEMENT, AND RECYCLINGGAS ANALYSIS, MANAGEMENT, AND RECYCLINGGAS ANALYSIS, MANAGEMENT, AND RECYCLING
33 -- Gas AnalysisGas Analysis3 - Gas Analysis
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Gas analysisGas analysis
Gas PhaseGas PhaseGas Phase
ChromatographyChromatographyChromatography
(GPC) at site.(GPC) at site.(GPC) at site.
AREVA T&D GPC and laptopAREVA T&D GPC and laptopAREVA T&D GPC and laptop
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Characteristics of gas to be purifiedCharacteristics of gas to be purifiedCharacteristics of gas to be purified
Limits of the gas sample to be reclaimed (in ppmw):Limits of the gas sample to be reclaimed (in ppmw):Limits of the gas sample to be reclaimed (in ppmw): Acidity level less than 4,000 ppmAcidity level less than 4,000 ppmAcidity level less than 4,000 ppm
Or/and nonOr/and non--condensable gases less than or equal tocondensable gases less than or equal to Or/and non-condensable gases less than or equal to 7,500 ppm or CF4 less than or equal to 1,000 ppm7,500 ppm or CF7,500 ppm or CF44 less than or equal to 1,000 ppmless than or equal to 1,000 ppm
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LaptopLaptopLaptop
GPCGPCGPC
Gas Phase Chromatography at siteGas Phase Chromatography at site
Characteristics of gasCharacteristics of gasCharacteristics of gas
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Example of result of an analysis
Characteristics of gasCharacteristics of gasCharacteristics of gas
Example of result of an analysis
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Laboratories AnalysisLaboratories Analysis
Sample taking of liquid phase:Sample taking of liquid phase:Sample taking of liquid phase:--- checking of the purity,checking of the purity,checking of the purity,--- checking the acidity in terms ofchecking the acidity in terms ofchecking the acidity in terms ofHF and CF
4
content,HF and CFHF and CF44 content,content,
--- non-condensable gasesnonnon--condensable gasescondensable gases
ANALYSIS AT RECLAIMING CENTERANALYSIS AT RECLAIMING CENTERANALYSIS AT RECLAIMING CENTER
METHOD USED BY AVANTECMETHOD USED BY AVANTECMETHOD USED BY AVANTEC
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Laboratories AnalysisLaboratories Analysis
- The purity of SF6 by the GPC Method.-- The purity of SFThe purity of SF66 by the GPC Method.by the GPC Method.
- The water content (Karl Fisher method).-- The water content (Karl Fisher method).The water content (Karl Fisher method).
--- Non condensable gases.Non condensable gases.
Non condensable gases.--- Acidity in terms of HF.Acidity in terms of HF.Acidity in terms of HF.
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Laboratories AnalysisLaboratories Analysis
The S2F10 content by theThe SThe S22FF1010 content by thecontent by the Perkin Elmer-Auto system XIPerkinPerkin ElmerElmer--Auto system XIAuto system XI(Turbochrom software).((TurbochromTurbochrom software).software).--- The non-volatile residues.The nonThe non--volatile residues.volatile residues.
- The oil content by infrared absorption.-- The oil content by infrared absorption.The oil content by infrared absorption.
ANALYSIS AT RECLAIMING CENTERANALYSIS AT RECLAIMING CENTERANALYSIS AT RECLAIMING CENTER
METHOD USED BY AVANTECMETHOD USED BY AVANTECMETHOD USED BY AVANTEC
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Laboratories AnalysisLaboratories Analysis
After the recycling of the gas, controls are processed inAfter the recycling of the gas, controls are processed inAfter the recycling of the gas, controls are processed in
order to check if the gas purity is in accordance toorder to check if the gas purity is in accordance toorder to check if the gas purity is in accordance tostandard IEC 60480 Ed. 2 (Oct. 2004) or better with thestandard IEC 60480 Ed. 2 (Oct. 2004) or better with thestandard IEC 60480 Ed. 2 (Oct. 2004) or better with the
specification for technical grade SF6, IEC 60376 Ed. 2. (tospecification for technical gradespecification for technical grade SFSF66, IEC 60376 Ed. 2. (to, IEC 60376 Ed. 2. (to
be published in 2005).be published in 2005).be published in 2005).
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UTILITY SERVICES AND TECHNOLOGIESUTILITY SERVICES AND TECHNOLOGIES--UTILITY SERVICES AND TECHNOLOGIES-GAS ANALYSIS, MANAGEMENT, AND RECYCLINGGAS ANALYSIS, MANAGEMENT, AND RECYCLINGGAS ANALYSIS, MANAGEMENT, AND RECYCLING
4 - Handling of the SF44 -- Handling of the SHandling of the SF666
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Filling procedure for gas recovery
containers
Filling procedure for gas recoveryFilling procedure for gas recovery
containerscontainers
Containers used specially for transport andContainers used specially for transport andContainers used specially for transport and
for containing used SF6 which may containfor containing used SFfor containing used SF
66 which may containwhich may contain
TOXIC and CORROSIVE impurities.TOXIC and CORROSIVE impurities.TOXIC and CORROSIVE impurities.
Each container is tested every fiveEach container is tested every five--- Each container is tested every five years.years.years.--- Checking the filling ratio (70 bars fillinging the filling ratio (70 bars fillinging the filling ratio (70 bars fillingCheckCheckratio is 1.04 Kg/l.)ratio is 1.04 Kg/l.)ratio is 1.04 Kg/l.)--- Checking the filling weight and avoiding the filling weight and avoiding the filling weight and avoidCheckCheckoverfilling.overfilling.overfilling.
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Gas recovery unit in a GIS substationGas recovery unit in a GIS substationGas recovery unit in a GIS substation
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Site Gas Recovery UnitsSite Gas Recovery Units
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Transportation of used gasTransportation of used gasTransportation of used gas
Procedure for the Return ofProcedure for the Return ofProcedure for the Return of
Packaging of used SF6 to the Plant.Packaging of used SFPackaging of used SF66 to the Plant.to the Plant.
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Label for Transport of used gasLabel for Transport of used gasLabel for Transport of used gas
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UTILITY SERVICES AND TECHNOLOGIESUTILITY SERVICES AND TECHNOLOGIES--UTILITY SERVICES AND TECHNOLOGIES-GAS ANALYSIS, MANAGEMENT, AND RECYCLINGGAS ANALYSIS, MANAGEMENT, AND RECYCLINGGAS ANALYSIS, MANAGEMENT, AND RECYCLING
5 - SF55 -- SSF6 Gas Purification Techniques
66 Gas Purification TechniquesGas Purification Techniques
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SF6 Gas Purification TechniquesSFSF66 Gas Purification TechniquesGas Purification Techniques
- As a pre-treatment, when the content
of non-condensable gases in SF6 is too
high (more than 7,500 ppm weight) aprocess of distillation has to be used by
separation between the gas phases of
air and SF6
.
- Then the purification process is run.
- Regeneration in the liquid phase.
- As a pre-treatment, when the content
of non-condensable gases in SF6 is too
high (more than 7,500 ppm weight) aprocess of distillation has to be used by
separation between the gas phases of
air and SF6 .
- Then the purification process is run.
- Regeneration in the liquid phase.
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SF6 Gas Purification TechniquesSFSF66 Gas Purification TechniquesGas Purification Techniques
- Polluted SF6 is pushed with a- Polluted SF6 is pushed with a
pneumatic pump, then risespneumatic pump, then rises
inside the process column,inside the process column,passes through adsorbentspasses through adsorbents
layers, filtered through a 5layers, filtered through a 5
microns filter and recovered.microns filter and recovered.
- A valve allows a direct- A valve allows a direct
sampling to determine thesampling to determine the
purity level of the recoveredpurity level of the recovered
gas.gas.
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SF6 Gas Purification TechniquesSFSF66 Gas Purification TechniquesGas Purification Techniques
SF6 Gas RecycledSFSF66 Gas RecycledGas Recycled
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UTILITY SERVICES AND TECHNOLOGIESUTILITY SERVICES AND TECHNOLOGIES--UTILITY SERVICES AND TECHNOLOGIES-GAS ANALYSIS, MANAGEMENT, AND RECYCLINGGAS ANALYSIS, MANAGEMENT, AND RECYCLINGGAS ANALYSIS, MANAGEMENT, AND RECYCLING
66
--
Destruction & AssessmentDestruction & Assessment
6 - Destruction & Assessment
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DestructionDestructionDestruction
--- When the gas contains more than 4,000When the gas contains more than 4,000When the gas contains more than 4,000ppmv of acidity, expressed in HF, is it tooppmv of acidity, expressed in HF, is it tooppmv of acidity, expressed in HF, is it toocorrosive to be passed through thecorrosive to be passed through thecorrosive to be passed through the
purification process.purification process.purification process.
--- Also, when the SF6 contains more than66 contains more thancontains more thanAlso, when the SFAlso, when the SF7,500 ppmv of air, the efficiency of the7,500 ppmv of air, the efficiency of the7,500 ppmv of air, the efficiency of the
process is very poor.process is very poor.process is very poor.
Gas must be destroyed.Gas must be destroyed.Gas must be destroyed.
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DestructionDestructionDestruction
--- When the gas is heated above 1,000 C, SF6 starts66 startsstartsWhen the gas is heated above 1,000When the gas is heated above 1,000 C, SFC, SFto dissociate into reactive fragments, mainlyto dissociate into reactive fragments, mainlyto dissociate into reactive fragments, mainlyHydrogen and Oxygen to form SO2 and HF.Hydrogen and Oxygen to form SOHydrogen and Oxygen to form SO22 and HF.and HF.--- At 1,200 C the gas is destroyed at 99%.At 1,200At 1,200 C the gas is destroyed at 99%.C the gas is destroyed at 99%.
--- Products of the reaction are removed by passingProducts of the reaction are removed by passingProducts of the reaction are removed by passingthrough a calcium hydroxide solution in order tothrough a calcium hydroxide solution in order tothrough a calcium hydroxide solution in order to
neutralize the acids and form sulfates and fluorides.neutralize the acids and form sulfates and fluorides.neutralize the acids and form sulfates and fluorides.
Gas was destroyed.Gas was destroyed.Gas was destroyed.
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AssessmentAssessmentAssessment
- Target: to meet new standard IEC 60480 Ed.
2. and even better, the future IEC 60 376 Ed. 2.
- Target: to meet new standard IEC 60480 Ed.
2. and even better, the future IEC 60 376 Ed. 2.
--- Experience shows that typicalExperienceExperience shows that typicalshows that typicalconcentration of impurities isconcentration of impurities isconcentration of impurities is
much better :much better :much better :
Three years of experience haveThree years of experience haveThree years of experience haveshown that several tens of tonsshown that several tens of tonsshown that several tens of tons
of SF6 gas have been processedof SFof SF66 gas have been processedgas have been processed
with a total loss of less than 2 %.with a total loss of less than 2 %.with a total loss of less than 2 %.
--- Objective: to reduce the lossesObjective:Objective: to reduce the lossesto reduce the lossesto 0.5 %.to 0.5 %.to 0.5 %.
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UTILITY SERVICES AND TECHNOLOGIESUTILITY SERVICES AND TECHNOLOGIES--UTILITY SERVICES AND TECHNOLOGIES-GAS ANALYSIS, MANAGEMENT, AND RECYCLINGGAS ANALYSIS, MANAGEMENT, AND RECYCLINGGAS ANALYSIS, MANAGEMENT, AND RECYCLING
77 -- ConclusionsConclusions7 - Conclusions
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Conclusions: RecyclingConclusions: Recycling
Environmental Advantage:Environmental Advantage:Environmental Advantage: Save energySave energySave energy
Decrease need of new SFDecrease need of new SFDecrease need of new SF666 gasgasgas Available purification on siteAvailable purification on siteAvailable purification on site
(Reduce waste transportation)(Reduce waste transportation)(Reduce waste transportation)
FINANCIAL ADVANTAGEFINANCIAL ADVANTAGEFINANCIAL ADVANTAGE
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Thank you for your attention.Thank you for your attention.Thank you for your attention.Time for Questions.Time for Questions.Time for Questions.
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