THERMODYNAMIC ANALYSIS OF OXYGEN-ENHANCED COMBUSTION PROCESSES

Cristiano F. Maidana and Gaëlle Gosselin

Keywords

Oxygen-enhanced combustion (OEC), alternative energy, oxygenseparation processes

Abstract

This paper presents a thermodynamic analysis of the process known as oxygen-enhanced combustion (OEC). In order to have a better evaluation of this process, a simple system was modeled, composed only of the main components needed to simulate an OEC process. The concentrated oxidant stream required for the OEC process is provided by a polymeric membrane set. Results show an increase of the energetic efficiency, from 22% to 58%, compared to regular atmospheric combustion. The exergetic efficiency follows the same trend, from 18% to 48.5%. A reduction of more than 60% of specific pollutants emissions is shown. The assessed technique points out to be energetically more attractive than cryogenics for small plants, the size limit depending on operating conditions.

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