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Article

Techno-Economic Analysis of Pressurized Oxy-Fuel Combustion of Petroleum Coke

1
Chemical Engineering Department, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
2
Clean Combustion Research Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
*
Author to whom correspondence should be addressed.
Energies 2020, 13(13), 3463; https://doi.org/10.3390/en13133463
Received: 28 April 2020 / Revised: 11 June 2020 / Accepted: 1 July 2020 / Published: 4 July 2020
Petroleum coke (petcoke) is a by-product of heavy petroleum refining, with heating values comparable to that of coal. It is readily available in oil-producing countries such as the United States of America (USA) and the Kingdom of Saudi Arabia (KSA) at minimum costs and can be used as an inexpensive fossil fuel for power generation. Oxy-petcoke combustion is an attractive CO2 capture option as it avoids the use of additional absorption units and chemicals, and results in a CO2 + H2O flue gas stream that is compressed and dehydrated in a CO2 capture and purification unit (CO2CPU). The additional cost of the CO2CPU can be reduced through high pressure combustion. Hence, this paper reports a techno-economic analysis of an oxy-petcoke plant with CO2 capture simulated at pressures between 1 and 15 bars in Aspen PlusTM based on USA and KSA scenarios. Operating at high pressures leads to reduced equipment sizes and numbers of units, specifically compressors in CO2CPU, resulting in increased efficiencies and decreased costs. An optimum pressure of ~10 bars was found to maximize the plant efficiency (~29.7%) and minimize the levelized cost of electricity (LCOE), cost of CO2 avoided and cost of CO2 captured for both the USA and KSA scenarios. The LCOE was found to be moderately sensitive to changes in the capital cost (~0.7% per %) and increases in cost of petcoke (~0.5% per USD/tonne) and insensitive to the costs of labour, utilities and waste treatment. View Full-Text
Keywords: CO2 capture; oxy-fuel combustion; pressurized combustion; petroleum coke; AspenPlusTM simulation CO2 capture; oxy-fuel combustion; pressurized combustion; petroleum coke; AspenPlusTM simulation
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MDPI and ACS Style

Hamadeh, H.; Toor, S.Y.; Douglas, P.L.; Sarathy, S.M.; Dibble, R.W.; Croiset, E. Techno-Economic Analysis of Pressurized Oxy-Fuel Combustion of Petroleum Coke. Energies 2020, 13, 3463. https://doi.org/10.3390/en13133463

AMA Style

Hamadeh H, Toor SY, Douglas PL, Sarathy SM, Dibble RW, Croiset E. Techno-Economic Analysis of Pressurized Oxy-Fuel Combustion of Petroleum Coke. Energies. 2020; 13(13):3463. https://doi.org/10.3390/en13133463

Chicago/Turabian Style

Hamadeh, Hachem; Toor, Sannan Y.; Douglas, Peter L.; Sarathy, S. M.; Dibble, Robert W.; Croiset, Eric. 2020. "Techno-Economic Analysis of Pressurized Oxy-Fuel Combustion of Petroleum Coke" Energies 13, no. 13: 3463. https://doi.org/10.3390/en13133463

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