HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation

Méthodologie pour tenir compte de l'impact environnemental d'un procédé lors de sa conception

Abstract : The environmental impact of a process is assessed by evaluation methods such as life cycle assessment (LCA). A complementary method has been developed in order to characterize the environmental impact at the preliminary design stage by application of a thermodynamic balance on the process boundaries. The chosen thermodynamic function is exergy which takes into account irreversibilities and is linked to the mean environment temperature, pressure and composition. Existence of irreversibility in a process means that a part of the provided energy is wasted increasing simultaneously pollutant emissions. Exergy is also a tool for co-products allocation. The study focuses on climate change that implies greenhouse gas (GHG) emissions. To illustrate the potential of coupling LCA and exergy analysis in the petroleum industry, a naphtha catalytic reforming process has been selected and evaluated in terms of climate change. In this process, GHG emissions have two origins: direct (due to catalyst regeneration) and indirect (due to utilities) emissions. The process and the reactors have been respectively modelled with the process simulator ProII and with a Fortran subroutine to take into account chemical transformations. The method, which cannot avoid LCA data, has underlined, for the process, a positive relationship between GHG emissions and respectively a thermodynamic parameter Ip and the variation of chemical exergy. The method has been extended to compare two processes having the same function and to take into account co-products quality and resource depletion
Document type :
Complete list of metadata

Cited literature [125 references]  Display  Hide  Download

Contributor : Thèses Ul Connect in order to contact the contributor
Submitted on : Thursday, March 29, 2018 - 2:04:05 PM
Last modification on : Friday, February 26, 2021 - 3:36:03 PM


Files produced by the author(s)


  • HAL Id : tel-01752998, version 1



Jean-François Portha. Méthodologie pour tenir compte de l'impact environnemental d'un procédé lors de sa conception. Autre. Institut National Polytechnique de Lorraine, 2008. Français. ⟨NNT : 2008INPL055N⟩. ⟨tel-01752998⟩



Record views


Files downloads