A technical and economic evaluation of two different oxygen sources for a small oxy-combustion unit

Oxy-combustion is a feasible CO2 capture method in the power and heat generation sector. This paper aims to propose a methodology for assessing two oxygen production technologies for small-scale oxy-combustion units: i) two-bed pressure swing adsorption (PSA), and ii) liquid oxygen delivery (LOX) for any local conditions, including the greenhouse gas (GHC) footprint for the oxygen that is produced. An analysis of PSA technology and LOX technology was carried out for the Czech Republic and for Germany, where the electricity, labor costs, and greenhouse gas (GHC) emission factors of electrical power differ considerably, but the equipment costs are similar.