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SF6 decomposition process for Hitachi

SF6 decomposition process for Hitachi

A review on SF6 substitute gases and research status of. Nov 01, 2018The health damage caused by sf 6 and its by-products obviously exist. In 1990, Kraut and Lilis reported six workers who contacted sf 6 decomposition products in an appliance repair facility; the workers were exposed without protection in a closed space for

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  • The SF6 Decomposition Mechanism: Background and

    2017-1-24Gas Insulated Switchgear (GIS) has been widely used in substations. The insulating medium used in GIS is sulfur hexafluoride (SF6) gas. However, the internal insulation defect existed in GIS would inevitably lead to partial discharge (PD), and cause the composition of SF6 to SOF2, SO2F2 and SO2 and other characteristic component gases. The decompositionCited by: 1

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  • Laser-ablation-assisted SF6 decomposition for extensive

    2019-4-1We present a safe, clean, convenient and easy-to-control method for extensive fluorination of graphene using laser-ablation-assisted decomposition of gaseous SF 6 molecules. The decomposition process is based on irradiation of a silicon target using a Nd:YAG laser (532 nm) in an SF 6 atmosphere. The reactiveCited by: 4

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  • THERMAL DECOMPOSITION OF SF6 AND SF6-AIR

    2013-1-1Thermal decomposition of SF 6 in contact with hot metallic surfaces has been previously investigated and the decomposition mechanisms are well known. This paper describes thermal decomposition of SF 6 and SF 6-air mixtures under practical conditions usually encountered in indoor gas-insulated substations.Dissociation of SF 6Cited by: 6

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  • Decomposition of SF6 in an RF Plasma Environment

    2018-6-12Decomposition of SF 6 A sensitivity analysis of an earlier model showed that the applied power was the most important parameter and positively affects the decomposition fraction of re-actants in an RF plasma reactor.13 Figure 2 shows that when no oxygen was added to the reactor (feed O 2 /SF 6 ratio = 0.0), η SF6Cited by: 25

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  • Correlation analysis between SF6 decomposed

    To obtain and understand the decomposition characteristics and decomposition process of SF 6 gas under different negative DC voltages, a physical model of the needle‐plate defect is used to conduct decomposition experiments of SF 6 gas. Experimental results show that, under different negative DC voltages, the partial discharge (PD) caused by the needle‐plate defect decomposes SF 6

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  • CiteSeerX — A Novel Purification Process for Used SF6

    CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): In test field studies under highly stressed conditions, one possible toxic SF6 decomposition product formed is disulfur decafluoride or S2F10. This paper presents a test facility for the investigation of the destruction of S2F10 via pyrolysis and the more

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  • Hitachi CD-60 Super Catalytic Decomposition System |

    2021-3-3The Hitachi SCDS is designed for processing PFC gases used in semiconductor abrication. The system features a 60l/min gas throughput and decomposition rates of over 99.4% for CF4, C2F6,

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  • SF6-alternatives Decomposition for sale

    A review on SF6 substitute gases and research status of. Nov 01, 2018The health damage caused by SF 6 and its by-products obviously exist. In 1990, Kraut and Lilis reported six workers who contacted SF 6 decomposition products in an appliance repair facility; the workers were exposed without protection in a closed space for

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  • Handling and Use of Sulfur Hexafluoride Gas

    2016-2-11Handling and Use of Sulfur Hexafluoride Gas Page 4 of 8 V. PROCEDURE A. Handling of Sulfur Hexafluoride Gas - Central Facilities. 1. All SF 6 gas shall be obtained through a central facility. 2. The designated central facility is responsible for maintaining a log of all SF 6 gas procurements and disbursals.

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  • Application of Electron Beams for the Treatment of VOC

    2019-5-26Electron-beam technology is based on using radical reactions to destroy air pollutants. Twenty volatile organic compounds (VOCs) were irradiated with electron beams in a laboratory-scale apparatus to examine the influence of the chemical structures of the VOCs from an energetic point of view. The experiments

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  • SF6 Free HV GIS and Breakers - US EPA

    2017-2-9Purpose Share status on replacement of SF6 with environmentally friendly insulating gas for high voltage GIS and breakers. SDGE, SCE, SMUD, LADWP PGE EPRI ABB, GE, Hitachi Siemens 3M Discussion on the Eco Gas replacement for SF6 November 29, 30 2016 What we learned 2

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  • Multivariate Evaluation Method for Screening Optimum

    2020-7-24In previous studies, the selection of optimal gas-sensing materials for detecting target gases mainly relied on their response value, but other indices, such as the recovery capability of materials, have usually been overlooked. Here, we propose a new method for evaluating sensor effectiveness that includes a broaderAuthor: Jifeng Chu, Xu Yang, Aijun Yang, Dawei Wang, Huan Yuan, Xiaohua Wang, Mingzhe Rong

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  • Theoretical study of the neutral decomposition of SF6 in

    2016-8-26In the presence of H 2 O and O 2, the dissociation products of SF 6 will decompose to form several main stable byproducts (i.e. SOF 2, SOF 4 and SO 2 F 2) in an electrical discharge.These byproducts are chemically active and have been shown experimentally to be associated with discharge faults. However, the relationships between the discharges and types of decompositionCited by: 39

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  • 西安交通大学

    Translate this page2019-6-1010. Fei Yang,Mingzhe Rong, Yi Wu, Simulation of Arc Splitting Process Considering Splitter-Plate Erosion,IEEE Transactions on Plasma Science,2011,39(11 PART 1):2862-2863. 11. 荣命哲,杨飞,吴翊等. 直流断路器电弧研究的新进展. 电工技术学报

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  • Dryad Data -- Insights on decomposition process of c

    The yield of the main decomposition products, the reaction pathways and enthalpy under different temperatures were explored. It was found that the decomposition of c-C4F8/N2 mainly produces CF2, F, CF3, CF, C, CF4 and C2F4. c-C4F8 can decompose to C2F4 by absorbing 43.28 kcal/mol, which is the main decomposition path and this process

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  • SF6-alternative gases for application in gas-insulated

    2018-3-20The environmental problems caused by greenhouse gases have received unprecedented attention. Sulfur hexafluoride (SF 6), which is the preferred gas for use in gas-insulated switchgear (circuit breakers, disconnect switches, etc. for high-voltage electrical circuits), has a very high global warming potential, andCited by: 72

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  • Decomposition of SF6 in an RF plasma environment

    Sulfur hexafluoride (SFd)-contained gas is a common pollutant emitted during the etching process used in the semiconductor industry. This study demonstrated the application of radio-frequency (RF) plasma in the decomposition of SF6. The decomposition fraction of SF6 [etaSF6 (C(in)-C(out))/C(in) x 10Cited by: 25

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  • Decomposition of SF6 in an RF plasma environment.

    Decomposition of SF6 in an RF plasma environment. Shih M, Lee WJ, Tsai CH, Tsai PJ, Chen CY. Sulfur hexafluoride (SFd)-contained gas is a common pollutant emitted during the etching process used in the semiconductor industry. This study demonstrated the application of radio-frequency (RF) plasma in the decompositionCited by: 25

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  • SF6-filled Reclamation for sale

    SF6-filled Reclamation for sale. 5. SF6 Filled Ring main Unit 6-36kV 6. MV Switchgear 4.16-36kV 6. LV Switchboard 110-690V 7. SF6 Circuit Breaker 36-252kV 8. Disconnecting Switch 36-1100kV 9. PT and CT 6-252kV 10. Soft Starter 0.4-15kV. 11. Compact Substation : Services 1. Project Consulting 2. Cost Estimation 3.

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  • Sensors | Free Full-Text | Gas Sensing Analysis of Ag

    Detection of decomposition products of sulfur hexafluoride (SF6) is one of the best ways to diagnose early latent insulation faults in gasCited by: 10

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  • SF6 positive DC partial discharge decomposition

    The condition monitoring and fault diagnosis method based on decomposed component analysis (DCA) for SF 6 gas‐insulated equipment, which mainly aiming at AC SF 6 gas‐insulated equipment, has become a research hotspot. Therefore, SF 6 positive DC partial discharge (PD) decomposition experiments under four typical

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  • Thermal Decomposition Properties of Epoxy Resin in

    Also thermal decomposition process of epoxy resin was simulated by the ReaxFF force field to reveal basic chemical reactions in terms of bond-breaking order, which further verified that CO₂ and H₂O produced during thermal decomposition of epoxy resin can intensify degradation of SF₆ dielectric property.

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  • Insights on decomposition process of c-C4F8 and c

    It was found that the decomposition of c-C 4 F 8 /N 2 mainly produces CF 2, F, CF 3, CF, C, CF 4 and C 2 F 4. c-C 4 F 8 can decompose to C 2 F 4 by absorbing 43.28 kcal/mol, which is the main decomposition path and this process easily occurs under high temperature. There is a dynamic equilibrium process among the variousCited by: 1

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  • 电气工程专区 [费米维基]

    Translate this page2020-12-1Insights on decomposition process of c-C4F8 and c-C4F8/N2 mixture as substitutes for SF6,Royal Societr Open Science, Volume 5, Issue 10 (2018) Decomposition mechanism of the C5-PFK/CO2 gas mixture as an alternative gas for SF6, Chemical Engineering Journal Volume 336, 38-46 (2018)

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  • TiO2 Nanotube Array Sensor for Detecting the SF6

    The detection of partial discharge through analysis of SF6 gas components in gas-insulated switchgear, is significant for the diagnosis and assessment of the operating state of power equipment. The present study proposes the use of a TiO2 nanotube array sensor for detecting the SF6 decomposition product SO2, and theCited by: 124

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  • 文章详细信息 - CNKI

    Translate this pageSF6局部过热分解特征组分的微量O2作用机制[J].高电压技术,2015,41(12):4105-4112. ZENG Fuping, et al. Influence mechanisms of trace H2O on the generating process of SF6spark discharge decomposition components[J]. Plasma Chemistry and Plasma

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  • Chemical Decomposition of High Pressure SF6/N2 (5:95

    6 hours agoSulfur hexafluoride (SF6) is the insulator gas used in most of equipments handling high and very high voltages.Owing to its high global warming potential, SF6 has been classified during the Kyoto conference on climate change among the greenhouse gases. Its emission in the atmosphere must therefore be

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  • SF6 Decomposition for subway - mmarzeszow.pl

    SF6 Decomposition for subway. SF6 gas excellence. Measuring system for laboratory analysis of decomposition. Special features Identification and precise quantification of the main decomposition products from SF6 gas Resistant against highly-corrosive gases Non-destructive method of measurement Factory...

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  • Global Super-Resolution Microscopes Market to Reach

    2021-3-16- Interactive peer-to-peer and enterprise-to-enterprise ideation and market intelligence exchange is facilitated via a robust, secure, and validated process. The process draws from uniquely qualified project-specific and geographically focused executives overseeing business development, marketing

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