Multi-objective economic and environmental assessment for the preliminary design of CO2 transport pipelines
Creators
Description
A methodology based on the multi-objective optimisation of economic and environmental aspects is presented to
support the preliminary design of CO2 transport pipelines employed as part of Carbon Capture and Storage (CCS)
systems. Pareto optimal design solutions are determined for a realistic point-to-point CO2 pipeline using Level
Diagrams and choosing the Nominal Pipe Size (NPS) as a decision variable. A quantitative procedure entailing
the definition of economic and environmental key performance indicators is defined to allow the identification of
an optimum pipeline design. The outcome is compared against the minimisation of single-objective indicators
based on the CO2 avoided and carbon pricing concepts. The results of a case-study concerning a 70 km long
pipeline transporting 10 Mt yr 1 of supercritical CO2 show that the multi-objective method yields an optimum
NPS equal to 30, higher than the NPS 28 deriving from the alternative indexing methods. The proposed multicriteria
approach effectively considers case-specific environmental sustainability constraints, which result in
determining 46% of the overall performance measure of the identified optimum solution. The results show that
conventional single-objective methods underestimate the contribution of environmental factors up to 2.6% of the
overall performance index value. A Monte Carlo probabilistic analysis is performed to verify the robustness of the
results with respect to the possible uncertainties.
Files
Journal of Cleaner production.pdf
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