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Optimisation énergétique des procédés : application à la distillation atmosphérique du pétrole

Abstract : The objective of this thesis is to demonstrate, on thermodynamic grounds, that introducing a flash in the preheating train of an atmospheric oil distillation process , together with an appropriate feeding of the resulting vapors into the column, could potentially bring substantial energy savings by reducing the duty of the preheating furnace and by reducing the distillation column irreversibilities. This idea has been expended by showing how this can be done while keeping the throughput and the product characteristics unchanged. The outcome is that placing several flashes after the heat exchangers and feeding the corresponding vapor streams to the appropriate trays of the column, reduces the pumparound flows and then the heat brought to the preheating train. The resulting heat deficit may then be compensated in additional heat exchangers by using low level heat recuperated from the products of the distillation and/or imported from other processes. The use of this residual heat reduces the furnace duty by approximately an equivalent amount and could be as high as 21%. The approach can be applied in the design of news processes or in the revamping of existing ones
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  • HAL Id : tel-01749284, version 1



Tahar Benali. Optimisation énergétique des procédés : application à la distillation atmosphérique du pétrole. Autre. Université de Lorraine, 2012. Français. ⟨NNT : 2012LORR0085⟩. ⟨tel-01749284⟩



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