A New Algebraic Pinch Analysis Tool for Optimising CO<sub>2</sub> Capture, Utilisation and Storage
Mohd Nawi, W.N.R.
Wan Alwi, S.R.
Manan, Z.A.
Klemeš, J.J.
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Mohd Nawi W., Wan Alwi S., Manan Z., Klemeš J., 2015, A New Algebraic Pinch Analysis Tool for Optimising CO2 Capture, Utilisation and Storage, Chemical Engineering Transactions, 45, 265-270.
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Optimal CO2 reduction planning can curb the rise in environmental emissions due to the increase in energy demand and utilisation. Carbon (more precisely, CO2) Capture and Storage (CCS) has been one of the proposed solutions to control CO2 emissions. However, mitigating CO2 emissions via CO2 storage in geological reservoirs without utilisation is neither a sustainable solution, nor really a clean technology option. This paper introduces a new algebraic method for targeting the optimum CO2 capture, utilisation and storage based on the Pinch Analysis approach. A new Total Site CO2 Integration concept is introduced. The concept is to capture CO2 with certain quality from various plants on the Total Site and inject it into CO2 headers. The CO2 headers are divided into certain composition ranges. The CO2 headers can satisfy the CO2 demands for various industries located along the headers, which require CO2 as its raw material. The CO2 can be further regenerated, and mixed as needed with pure CO2 generated from one or multiple centralised CO2 plant if required. The excess CO2 is to be sent to geological storage. The proper utilisation of CO2 will reduce the amount of CO2 needed to be stored. This will extend the geological carbon storage-life capacity. Aside from estimating CO2 utilisation, this method also allows an industrial site planner to identify the suitable industries that can act as CO2 sources or CO2 demands for a given region.
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