SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "LAR1:cth ;pers:(Lyngfelt Anders 1955);conttype:(scientificother);lar1:(cth)"

Sökning: LAR1:cth > Lyngfelt Anders 1955 > Övrigt vetenskapligt > Chalmers tekniska högskola

  • Resultat 1-10 av 54
  • [1]23456Nästa
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  • Arjmand, Mehdi, 1986-, et al. (författare)
  • Investigation of CuO-based Oxygen Carriers as CLOU Materials for Solid Fuels
  • 2011
  • Ingår i: Proceeding of the 2011 AIChE Fall Annual Meeting. - 978-0-8169-1070-0
  • Konferensbidrag (övrigt vetenskapligt)abstract
    • Chemical-looping combustion (CLC) is a promising combustion technique with efficient CO2-capture at low cost due to inherent gas separation. In a CLC process, a metal oxide is circulated between two reactors, wherein they undergo changes from an oxidized form in the air reactor to a reduced one in the fuel reactor. In the case of chemical-looping with oxygen uncoupling (CLOU), the oxygen carrier releases oxygen in the gas phase in the fuel reactor as shown in the figure. This enables a high rate of conversion of char from solid fuels, as it eliminates the need for the gasification step needed in normal CLC with solid fuels. Only certain pure metal oxides of Co, Cu and Mn have an equilibrium partial pressure of oxygen suitable for CLOU. Due to its favorable thermodynamics (facile redox properties) and agile kinetics (high reactivity), CuO is a promising CLOU material, in addition to being an excellent oxygen carrier in the combustion of gaseous fuels. In this work, the performance of CuO-based oxygen carriers supported on ZrO2 stabilized by calcium oxide, magnesia and ceria will be presented to assess their suitability as oxygen carriers for solid fuel combustion. The samples were prepared by freeze-granulation and the reactivity was examined in a laboratory fluidized bed reactor under cyclic oxidizing and reducing conditions, simulating the CLOU process. Owing to the fast release of oxygen by CLOU particles, the reaction rates were investigated using coke as the fuel of choice. The influence of reaction temperature and oxygen concentration on the rate of reaction was also studied.
  •  
2.
  •  
3.
  •  
4.
  •  
5.
  • Berntsson, Thore, 1947-, et al. (författare)
  • Towards Sustainabel Oil Refinery - Pre-study for larger co-operation project
  • 2008
  • Rapport (övrigt vetenskapligt)abstract
    • In this report, the Chalmers EnergiCentrum (CEC) presents the results of a pre-study commissioned by Preem relating to the effective production of future vehicle fuels. This pre-study was made up of three studies focusing on energy streamlining, the utilisation of waste heat and carbon-dioxide separation and biorefinement relating to the gasification and hydration of vegetable oils. One of the common starting points for these studies was the current situation at the Preem refineries in Göteborg and Lysekil from where the measurement data were obtained and analysed. The report summarises the knowledge situation based on current research in the individual technical fields. The results present some interesting future opportunities for developing the sustainable production of future vehicle fuels. The sections vary, as the areas that have been examined differ and the sections have been written by different people. The reports ends with some joint conclusions and a number of questions which could be included and answered in a more extensive future main study, as part of a developed research partnership between Preem and the Chalmers University of Technology. The preliminary results of this work were analysed with the client at workshops on 1 October and 29 November 2007. The report is written in English combined with an extensive summary in Swedish including a proposal on a future main study. The study was conducted by the Chalmers EnergiCentrum (CEC), in collaboration with a number of researchers in the CEC’s network. They included Thore Berntsson, Jessica Algehed, Erik Hektor and Lennart Persson Elmeroth, all from Heat and Power Technology, Börje Gevert, Chemical and Biological Engineering, Tobias Richards, Forest Products and Chemical Engineering, Filip Johnsson and Anders Lyngfelt, Energy Technology, and Per-Åke Franck and Anders Åsblad, CIT Industriell Energianalys AB. The client, Preem, was represented by Bengt Ahlén, Sören Eriksson, Johan Jervehed, Bertil Karlsson, Gunnar Olsson, Ulf Kuylenstierna, Stefan Nyström, Martin Sjöberg and Thomas Ögren. Tobias Richards was responsible for compiling the report and Bertil Pettersson was the project manager.
6.
  • Iqbal, A, et al. (författare)
  • Alstom’s Chemical Looping Prototypes
  • 2012
  • Ingår i: 37th International Technical Conference on Clean Coal & Fuel Systems June 3-7, 2012 Clearwater, FL, USA.
  • Konferensbidrag (övrigt vetenskapligt)
  •  
7.
  •  
8.
  • Jing, Dazheng, 1986-, et al. (författare)
  • Innovative Oxygen Carrier Materials for Chemical-Looping Combustion
  • 2013
  • Ingår i: Energy Procedia. - 1876-6102. ; 37, s. 645-653
  • Konferensbidrag (övrigt vetenskapligt)abstract
    • In chemical-looping combustion, the oxygen needed for combustion of fuel is provided by metal oxides called oxygen carriers, and inherent separation of CO2 is achieved without energy penalty. For gaseous fuels, such as natural gas, Ni-based oxygen carriers have generally been shown to be the most reactive. But as Ni-based materials are burdened by high costs and environmental risks with respect to toxicity, it is of high importance to find viable non-Ni alternatives. In the EU-financed project INNOCUOUS, one of the key issues is to find novel non-Ni based oxygen carriers. In this paper results from reactivity investigations of three groups of oxygen carrier materials are reported. The materials were prepared by spray-drying, and are based on 1) CuO, 2) Ca-Mn-X-O where X = Cu, Fe, Ti and Mg, and 3) Mg-Mn-O. A number of materials showed a combination of sufficient mechanical strength, high release of gas phase oxygen and high reactivity with methane, and can thus be considered viable alternatives to Ni-based materials.
9.
  •  
10.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 1-10 av 54
  • [1]23456Nästa
Åtkomst
fritt online (9)
Typ av publikation
konferensbidrag (34)
bokkapitel (11)
tidskriftsartikel (6)
rapport (2)
samlingsverk (redaktörskap) (1)
Typ av innehåll
Författare/redaktör
Mattisson, Tobias, 1 ... (35)
Rydén, Magnus, 1975- ... (15)
Leion, Henrik, 1976- ... (9)
Leckner, Bo, 1936-, (8)
Johansson, Marcus, 1 ... (5)
visa fler...
Adanez, Juan (5)
Åmand, Lars-Erik, 19 ... (4)
Beal, Corinne (4)
Linderholm, Carl, 19 ... (4)
Kuusik, Rein (4)
Moldenhauer, Patrick ... (4)
Younes, Mourad (4)
Pröll, Tobias (3)
Niass, Tidjani (3)
Fadhel, Bandar (3)
Ballaguet, Jean-Pier ... (3)
Johnsson, Filip, 196 ... (2)
Hedayati, Ali, 1984- ... (2)
Azad, Abdul-Majeed, ... (2)
Azimi, Golnar, 1985- ... (2)
Jing, Dazheng, 1986- ... (2)
Jerndal, Erik, 1980- ... (2)
Epple, Bernd (2)
Snijkers, Franz (2)
Trikkel, Andres (2)
Garcia-Labiano, Fran ... (2)
Hofbauer, Hermann (2)
Kolbitsch, Philipp (2)
Abad, Alberto, 1972- (1)
Arjmand, Mehdi, 1986 ... (1)
Franck, Per-Åke, 195 ... (1)
Berntsson, Thore, 19 ... (1)
Karlsson, Maria (1)
Algehed, Jessica, 19 ... (1)
Åsblad, Anders, 1956 ... (1)
Azar, Christian, 196 ... (1)
Snijkers, Frans (1)
Larring, Yngve (1)
Joumani, Y (1)
Wolf, Jens (1)
Bergqvist, Klas, (1)
Markström, Pontus, 1 ... (1)
Persson Elmeroth, Le ... (1)
Hektor, Erik, 1978-, (1)
Gevert, Börje, 1956- ... (1)
Richards, Tobias, 19 ... (1)
Cho, P. (1)
Zevenhoven., Ron (1)
Hallberg, Peter, 198 ... (1)
visa färre...
Lärosäte
Språk
Engelska (54)
Ämne (HSV)
Teknik (54)
Naturvetenskap (7)

År

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy