Advanced petroleum coke oxy‐combustion power generation with carbon capture and sequestration: Part I—Design and techno‐economic analysis
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AbstractThis study presents a first‐of‐its‐kind design and economic analysis of a petroleum coke oxy‐combustion electric power generation technology operated with and without carbon capture and sequestration. In this work, we examined three petroleum coke oxy‐combustion designs: petcoke oxy‐combustion, petcoke oxy‐combustion operated with carbon capture and sequestration (CCS), and petcoke oxy‐combustion with CO2 purification by distillation and CCS. The technical and economic performance of the designs were assessed based on thermal efficiency, CO2 capture rate, pipeline CO2 purity, CO2 emissions, and levelized cost of electricity (LCOE). The results of our assessments yielded a base‐case LCOE of $84.24/MWh for the petcoke oxy‐combustion design, $90.94/MWh for the petcoke oxy‐combustion design operated with CCS, and $102.8/MWh for petcoke oxy‐combustion with CO2 purification by distillation and CCS. Although the design that employed CO2 purification had higher LCOE than the other designs, its captured CO2 stream meets pipeline standards. Therefore, this design was selected for the proposed petroleum coke oxy‐combustion technology. Further analysis carried out includes the cradle‐to‐customer gate life‐cycle environmental impact assessment of the petcoke oxy‐combustion power plant which is presented in Part II of this work. Thus, this work represents the first study to present the eco‐technoeconomic and life‐cycle analysis that considered the impacts of O2 removal from CO2 captured from oxy‐combustion exhaust via cryogenic distillation for solid fuels in general.
