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    Item type:Publication, Access status: with files ,
    Post-combustion CO₂ capture in coal-fired power plants : comparison of integrated chemical absorption processes with piperazine promoted potassium carbonate and MEA
    (Elsevier, 2008-11)
    Oexmann, Jochen
    ;
    Kather, Alfons
    A thermodynamic and economic comparison of post-combustion CO2capture processes using aqueous solutions of piperazine (PZ) promoted potassium carbonate (K2CO3) and monoethanolamine (MEA) based on fair boundary conditions and constant assumptions using rigorous thermodynamic models is described. In contrast to a first preliminary comparison, it is shown that under the stated assumptions and considered boundary conditions, a 7 m MEA solution performs better in both thermodynamic and economic terms than aqueous solutions of K2CO3and PZ.
    Publicationtype: Conference Paper
    Scopus© Citations 62  515  341
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    Item type:Publication, Access status: with files ,
    Comparative thermodynamic analysis and integration issues of CCS steam power plants based on oxy-combustion with cryogenic or membrane based air separation
    (Elsevier, 2008-11)
    Pfaff, Imo
    ;
    Kather, Alfons
    When realizing CSS steam power plants based on oxy-combustion, the energy demand for oxygen production is one of the main causes for efficiency losses. This comparative study focuses on the impact of the air separation technology - cryogenic as well as high temperature membrane based - on the efficiency of a coal-fired oxyfuel steam power plant. As a result of this study both show comparable efficiency potentials whereas the membrane based technology needs a higher degree of integration into the power cycle to compete efficiencies of the oxyfuel power plant with cryogenic ASU.
    Publicationtype: Conference Paper
    Scopus© Citations 157  443  459