Screening of site-wide retrofit options for the minimization of CO₂ emissions in process industries

Abstract This paper addresses the systematic screening of possible retrofit options for the minimization of CO₂ emissions from process industries. In retrofit scenarios there are various options for the reduction of CO₂ emitted which can be considered with different costs and capacities for CO₂ reduction/removal. This study considers a holistic view accounting for multiple sources of CO₂ emitted from a site and multiple potential retrofit options which can be implemented individually or in combination to meet CO₂ reduction targets. For a given site the different possible retrofit options are ranked in terms of cost-effectiveness and the most appropriate options are highlighted using graphical methods to suggest the most cost-effective combinations of retrofits. A case study is used to demonstrate the applicability of the proposed design methodology. This case study illustrates how fuel switching and energy-saving projects can be practical and beneficial measures for the implementation of decarbonization in process industries.