Published Article
Purification Methods for Captured CO2 from Petroleum Coke Oxy-Combustion Power Plants
Tia Ghantous, Ikenna J Okeke, Thomas A Adams II
October 21, 2021
We present eco-technoeconomic analyses of four processes, including two novel designs, for the purification of captured CO2 from flue gas for a petroleum coke (petcoke) oxy-combustion power plant operated with carbon capture and sequestration (CCS). A base case petcoke oxy-combustion design obtained from a previous study consisting of flue gas water removal using condensation was used in this study. Other purification processes evaluated consist of a cryogenic distillation petcoke oxy-combustion with CCS, an oxygen deficient petcoke oxy-combustion with CCS and a catalytic dehydration petcoke oxy-combustion via hydrogen conversion with CCS. An eco-technoeconomic analysis considering greenhouse gas (GHG) emissions, levelized cost of electricity (LCOE), thermal efficiency and CO2 product purity to meet pipe-line specifications, was conducted on all purification candidates. This revealed that base case design did not meet the CO2 pipeline specifications. The highest LCOE was attributed to the cryogenic distillation design, although it produces the purest CO2 product compared to all other designs. The oxygen-deficient design has the lowest LCOE and GHG emission, proving to be a desirable candidate, however further re-search is required to determine the feasibility associated with the incomplete combustion of fuels. The catalytic de-oxygenation design appears to be a middle ground between the latter two designs, with a lower LCOE than the cryogenic design and a higher purity CO2 product compared to the oxygen deficient design. In brief, this study presents and performs eco-technoeconomic analyses of four candidates for the purification of captured CO2 from petcoke oxy-combustion power plants while respecting pipeline specifications, the first of its kind to do so.
Carbon Dioxide Capture, eco-technoeconomic analysis, oxy-combustion, Petroleum Coke
Suggested Citation
Ghantous T, Okeke IJ, Adams TA II. Purification Methods for Captured CO2 from Petroleum Coke Oxy-Combustion Power Plants. (2021). LAPSE:2021.0795
Author Affiliations
Ghantous T: McMaster University
Okeke IJ: University of Toronto
Adams TA II: McMaster University [ORCID] [Google Scholar]
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CSChE Systems & Control Transactions
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Proceedings of the Canadian Chemical Engineering Conference 2021, October 24-27, Montréal, Québec, Canada
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