Comparison of cost of CO2 capture (CC) systems with consideration of technological learning effect

• 1、Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
• 2、 Petroleum Company Ltd., China National Aviation Fuel Group, Beijing 100088, China

Abstract：Post-combustion, pre-combustion and oxy-combustion, as three CO2 capture systems, differ greatly with regards to technological characteristics, energy efficiency and economy. Evaluation and comparison of the three systems should not only take their current performances into account, but also depend on the potential of future improvement. We calculate the learning rates of the three systems, analyze and compare their economies after wide applications on the basis of technology learning curve theory. The results show that pre-combustion possesses the lowest cost of CO2 capture and cost of electricity (COE) among the three systems when their installed capacities reach 1000 GW, while its cumulative investment is relatively high. Generally, there is no marked difference between the three systems in terms of technical economy, and the prospects of their applications are affected by some other factors such as industrial policy and environmental impact.

Keywords： CO2 capture (CC) learning curve economic analysis cost comparison