Daniel Chinn

CO 2 Removal from Power Plant Flue Gas-Cost Efficient Design and Integration Study

This chapter focuses on the evaluation of various engineering options to reduce the costs of amine-based carbon dioxide (CO 2 ) capture from flue gas generated by a 400 MW natural gas fired combined cycle (NGCC) power plant. The objective of this study is to cut the cost of a post-combustion amine-based CO 2 capture process by 50-70%. Results from this study indicate that capital investment for post-combustion CO 2 recovery from gas turbine (GT) exhaust by monoethanolamine (MEA) can be reduced 40-55%. For a near-term MEA plant designed as an add-on to existing power plant, the capital cost can be reduced by 40% through alternate equipment selections such as using plate and frame (P&F) instead of shell and tube (S&T) exchangers, elimination of the flue gas cooler, using ANSI instead of API pumps, using structured instead of random packing, and by combining two 50% trains into one 100% train CO 2 compression. An ejector-assisted hot lean amine-flashing drum is added to reduce reboiling steam requirement by about 15%. All of the proposed changes are commercially demonstrated either for amine services or for other similar applications, and thus considered to have minimum risks.

Cost efficient amine plant design for post combustion CO2 capture from power plant flue gas

Publisher Summary The CO 2 capture project (CCP) is a major industrial/government collaboration developing new technology for the capture and geological storage of CO 2 .The initial phase involves the design of a baseline natural gas combined-cycle (NGCC) and a 30-wt% monoethanolamine (MEA) retrofit plant designed to refinery/API standards. The second phase was a value engineering exercise, where changes in equipment and design standards were implemented to create a low-cost retrofit MEA plant. In the final phase, the NGCC and value-engineered MEA plant was redesigned as a new, integrated system. The CCP had developed capital and operating costs for the various design options, and have concluded that there are significant opportunities through value engineering and process integration to reduce the

CO2 removal from gas using ionic liquid absorbents

/C0 2 avoided cost of post-combustion CO 2 capture.