S = 0.25 to 0.5
Da = Absorber Dia calculated above
The technology to recover CO2 from flue gases is commercially available and, though mature, is being significantly improved. The process economics greatly depends on the size of the plant. This paper provides approximates for establishing preliminary estimates of fixed & operating costs. A 1000 te/d plant of conservative design can produce CO2 for $30/tonne or from coal-fired flue gas. However, 4600 te/d single-train plants are possible. Economy of scale, together with the ongoing development in improving the solvent properties (e.g. MHI has developed an hindered amine based solvent KS-1 which is supposed to reduce the production cost for low pressure systems such as recovery from flue gases), have the potential of delivering CO2 at a price much lesse than that of the reference 1000 te/d plant.