ATAC i system - Energimyndigheten

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• The choice of nickel or iron oxide as oxygen carrier has no significant impact on the overall efficiency of the studied combined cycles if the same TIT is assumed and no losses are included. However the study shows that the choice between nickel and iron oxide has a considerable impact on the process and reactor design. Further studies on different oxygen carriers are necessary. Behov av fortsatta forskningsarbeten (Future work): • Exchange information with the group at Chalmers and make a collaborative study together. • Adjusting the CLC reactor parameter mapping to experimental results. • Further modeling of the systems and creating more efficient process alternatives. • Investigating systems with other oxygen carriers (e.g. manganese oxides). • Identify the possibilities of implementation of CLC with other feedstock (e.g., biomass and coal). • Identify application for the technique (e.g., power or cogeneration). • To finish a PhD degree in year 2004/05. • We are planning a cooperation with Prof. H. Jin (Chinese Academy of Sciences, who had been working with Prof. Isida in Japan) to make a joint study on the new systems Publikationslista (List of publications): Wolf, J., Anheden, M., and Yan, J., 2001, “Performance Analysis of Combined Cycles with Chemical Looping Combustion for CO2 Capture”, International Pittsburgh Coal Conference, Newcastle, New South Wales, Australia, December 3 - 7, 2001 A manuscript is under preparation. 4
Development of tools for the design of low emission burners in industrial gas turbines (Utveckling av gasturbinbrännare med låg emission för kraftgenerering) Projekt nr: P12459-1 Projektledare: Prof. Laszlo Fuchs Projektdeltagare: TeknD. Fabrice Guillard (30%), experiments TeknD. Doru Caraeni (30%), computations Christophe Duwig, doktorand (100%) Projektets varaktighet: 2000-07-01 till 2002-03-31 Beviljade medel: 2 418 000 kr Referensgrupp: Vladimir Miloslajevic (Alstom Power), Rolf Gabrielsson (VAC) ___________________________________________________________________________ Project description: The current trend of design of low emission burners for single and multiple fuels is to burn lean mixture. By this, the peak temperature can be reduced and the formation of thermal NO is greatly avoided. The limit of how lean the mixture can be is determined by either flame blow out or incomplete combustion, which leads to elevated levels of emissions of CO and unburned hydrocarbons (UHC). The issue is thus, how to design burners and their integration into a combustion system in such a way that they will function in a well-defined manner (i.e. at design conditions). This problem is difficult and currently there are no complete solutions available. The aim of the work proposed herein is specifically focused towards answering the problems associated with burner design, for power generating gas turbine applications, using low emission burners for less favorable fuels (such as low value bio-gas) and/or water injection which may lead to lowering the flammability of the fuel. Active research is carried out worldwide in improving modeling of turbulent combustion. In this project the theoretical work focuses on the mixing properties of industrial GT (low emission) burners and mixing effects on the combustion. In addition we study mixing and combustion effects of mixtures of (multi-component) fuels and the effect of species dependent (i.e. Schmidt number) diffusivity on mixing and combustion. The theoretical work is proposed to be supported by combined experiments, which are conducted in close collaboration with ALSTOM Power. Project goals: 1. Developing and validating design tools for low-value gas/bio-gas fuels for low NOx power GT burners. 2. Study the effects fuel (including low value biogas) composition and/or of water injection on flame stability. 3. Study potentially new injection and mixing techniques for lean and/or low load combustion. 4. Develop and refined modeling (i.e. computational) and experimental models/techniques for handling low emission burner design.
Page 1 and 2: ATAC i system Projekt nr: P10025 -
Page 3 and 4: I Figur 2 visas ett exempel där 10
Page 5 and 6: Termodynamiska data för luft-vatte
Page 7 and 8: 2002-02-22 liquid components were a
Page 9 and 10: Dimensionering av befuktare för ev
Page 11 and 12: Slutsatser. Utfall i relation till
Page 13 and 14: Rekuperatorer för Gasturbinanlägg
Page 15 and 16: Blomgren) har skett här och viss a
Page 17 and 18: Expertsystem baserat på ANN: Metod
Page 21 and 22: med en vanlig luftpump (cykel, bil)
Page 23 and 24: Biobränslebaserad småskalig kraft
Page 25 and 26: These findings together with the di
Page 27 and 28: stirlingmotorer för andra ändamå
Page 29 and 30: Projektets mål (Project goal): Fö
Page 31 and 32: Analys och optimering av avancerade
Page 33 and 34: Biomass and Natural Gas. Increased
Page 35 and 36: cycles, repowering of old steam uni
Page 37 and 38: Systemstudier av kraftcykler med Ch
Page 39: compensated by the steam cycle. The
Page 43 and 44: High Pressure Catalytic Combustion
Page 45 and 46: combustion catalysts. The incipient
Page 47 and 48: Project goal: The overall objective
Page 49 and 50: pressure ratio of 2.7. Above a pres
Page 51 and 52: Förbränning för koldioxidfria pr
Page 53 and 54: 3 candidate, the measurement strate
Page 55 and 56: Dynamisk processimulering för opti
Page 59 and 60: Nedan anges viktiga delmål, dvs de
Page 61 and 62: Behov av fortsatta forskningsarbete
Page 63 and 64: Katalytisk förbränning av förgas

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