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Sökning: LAR1:cth > Övrigt vetenskapligt > Johnsson Filip 1960 > Jilvero Henrik 1984

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  • Jilvero, Henrik, 1984-, et al. (författare)
  • Heat requirement of CO2 absorption by aqueous ammonia
  • 2011
  • Ingår i: 1st Post Combustion Capture Conference.
  • Konferensbidrag (övrigt vetenskapligt)abstract
    • Aqueous ammonia has lately emerged as a promising absorbent of CO2 in post-combustion capture applications, often referred to as the chilled ammonia process (CAP). The heat required for regeneration, i.e. the reboiler duty (kJ/kg CO2), is a crucial parameter for all absorbents. For the CAP, the required reboiler duty presented in literature ranges from 1,500 to 4,200 kJ/kg CO2 [1-6]. This is a wide range with crucial consequences for the feasibility of the process. The aim of this work is to review the different sources in order to explain the large difference in heat requirement.
  • Jilvero, Henrik, 1984-, et al. (författare)
  • Techno-economic Analysis of Carbon Capture at an Aluminum Production Plant – Comparison of Post-combustion Capture Using MEA and Ammonia
  • 2014
  • Ingår i: Energy Procedia. ; 63, s. 6590-6601
  • Konferensbidrag (övrigt vetenskapligt)abstract
    • Two absorbents, ammonia and MEA, have been evaluated for post-combustion capture of carbon dioxide at an aluminum manufacturing plant with respect to technical and economic performance. Process simulations combined with advanced thermodynamic models are used to model the process performance. A detailed economical estimation has been made for both ammonia and MEA-based post combustion capture as a function of flue gas CO2 concentration. The two processes have been compared with respect to the specific capture cost (€/tCO2 captured). The results show that the ammonia-based process is the most cost efficient at high flue gas CO2 concentrations (7-10%) with a cost of 74-82 €/tCO2 and the MEA-based process is the most cost efficient option at low flue gas CO2 concentrations (3-4%) with a cost of 93-97 €/tCO2. A heat integration analysis reveals that up to 50% of the heat requirement can be covered with excess heat from the aluminum manufacturing plant, which potentially could reduce the capture cost with 10-15 €/tCO2.
  • Jilvero, Henrik, 1984-, et al. (författare)
  • Thermal Integration of the Chilled Ammonia Process
  • 2010
  • Ingår i: 10th International Conference on Greenhouse Gas Control Technologies.
  • Konferensbidrag (övrigt vetenskapligt)abstract
    • This work evaluates the performance of the chilled ammonia process (CAP) for CO2 capture. An equilibrium based thermodynamic model of the NH3-CO2-H2O system is combined with a reactor system description of the CAP to estimate the electric efficiency of a state-of-the-art coal-fired power plant equipped with the CAP. The ammonia concentration is a critical design parameter; for the modelled concentrations the specific energy requirement in the reboiler varies between 2200-2800 kJ/kg CO2 captured. When equipped with the CAP for CO2 capture, the electric efficiency of the reference plant decreases with 8 to 10%, depending on cooling water temperature and ammonia concentration.
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