Membrane Technology for
Post-Combustion Carbon Capture from Coal-Fired Power Plants
Group 2: Tim Becker, Hye-In Son, Angel Asante, Nadeeka Karunaratne
The Investment Costs are set by the price of the equipment which is mainly the pumps and the membrane. Again there is not much we can do to reduce the price of the pumps. However, the price of the membrane is determined by the area which is influenced by the membrane properties the selectivity and the permeability.
INVESTMENT COSTS - MEMBRANE AREA
For low pressure ratios there is a optimal selectivity around 50. At lower selectivities the separation is not good enough (a) and for higher selectivities the required membrane area increases (b), because the process is limited by the slow permeability of the nitrogen.
The two equations show how the membrane price is normally estimated in a Cost Calculation. It is determined by the membrane are, the membrane price and the membrane frame price.
Baker et al (2010)