Oxy-combustion processes for CO2 capture from advanced supercritical PF and NGCC power plant

Publisher Summary This chapter represents a reasonable baseline of oxy-combustion; the process evaluation was based on proven technology, where possible, with oxygen production based on cryogenic separation technology and the recycle system utilizing either flue gas or CO2. Process flow diagrams (PFDs) were developed and heat and mass balances (HMBs) compiled to model the overall oxy-combustion process. The PFDs/HMBs analysis produced data allows specifications for the major plant items to be developed; this in turn allows budget capital costs for the major components to be assessed and operating philosophies to be investigated. Aspects of the oxy-combustion process which impact on the safety and operability of the power plant were also highlighted in this chapter. Finally an economic analysis was performed similar to that undertaken on integrated gasification combined cycle (IGCC) power generation to arrive at the power cost per kWh. The basic cost elements being capital cost, operating cost, and agreed economic parameters. A sensitivity analysis was undertaken to compare the influence of discount rate and fuel costs on power costs.