Abstract
CO2 captured from fossil-fueled power generation plants is said to be economically transported via pipelines over long distances. The CO2 must be compressed to pipeline specifications using compressors and pumps that are driven by gas turbine (GT) or other prime movers. This paper presents the evaluation of actual work transfer or required prime power by modeling the governing equations of compression using the Peng–Robinson equation of state (PR-EOS). A computer code was developed to carry out the modeling and subsequent simulation of the compression power requirement. The simulation of prime mover power was carried out for different technology (head per stage) of the compressor ranging from 10-staged compression to double stage compression. The results show that the current technology of the centrifugal compressor could require as much as 23MW of prime mover power to compress 1.5 million tonnes per year of CO2—a projected equivalent CO2 released from a 530MW combined cycle gas turbine (CCGT) power generation plant.
Highlights
Sustainability of fossil fuel-fired power generation plants require the removal of carbon in the form of carbon dioxide (CO2 ) from either the fuel before combustion or flue gas after combustion
It is worth mentioning that the quantification of compression duty has been conducted by many researchers, especially in areas that deal with cost prediction models of CO2 pipeline transport [6]
It is worth mentioning that the maximum pressure required for the the CO2 pipeline is 15 MPa, which is within the EOS applicability range
Summary
Sustainability of fossil fuel-fired power generation plants require the removal of carbon in the form of carbon dioxide (CO2 ) from either the fuel before combustion or flue gas after combustion. It is worth mentioning that the quantification of compression duty has been conducted by many researchers, especially in areas that deal with cost prediction models of CO2 pipeline transport [6]. In such studies, the required energy for compression is either treated as an efficiency penalty on the overall power generation plant’s efficiency or assumed to be supplied from the grid [7,8,9,10]. Analysis of this kind becomes imperative to aid the techno-economic assessment of deploying this prime mover in a CO2 pipeline transport
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