LEFEVRE, Sebastien; FERRASSE, Jean-Henry; BOUTIN, Olivier; SERGENT, Michelle; FAUCHERAND, Rémy; VIAND, Alain

doi:10.1016/j.cherd.2010.12.009

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LEFEVRE, Sebastien
Modélisation et Simulation Numérique (en mécanique des fluides) [M2P2]

FERRASSE, Jean-Henry
Laboratoire de Mécanique, Modélisation et Procédés Propres [M2P2]

BOUTIN, Olivier
Laboratoire de Mécanique, Modélisation et Procédés Propres [M2P2]

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Chemical Engineering Research and Design. 2011-07, vol. 89, n° 7, p. 1045–1055

Elsevier

Résumé en anglais

This study develops a coupling of energetic and experimental design approaches on a given configuration of wet air oxidation process (WAO), applied for wastewater containing a hard chemical oxygen demand (phenol for instance). Taking into account thermodynamic principles and process simulation, the calculation of minimum heat required by the process, exergetic efficiency and work balance is presented. Five parameters are considered: pressure (20–30 MPa); temperature (200–300 °C); chemical oxygen demand (23–143 g l−1); air ratio (1.2–2) and temperature of exiting steam utilities (160–200 °C). Using the surface response method, it appears that initial chemical oxygen demand and temperature are the two parameters that mainly influence the result. With the modelling, good conditions for the functioning of the presented process are the following: pressure of 19.4 MPa, temperature of 283 °C, chemical oxygen demand of 54.9 g l−1, air ratio of 1.7 and vapour temperature of 183 °C.< Réduire

Mots clés en anglais

Energy efficiency

Exergy

Wet air oxidation process

Optimisation

Experimental design

Numerical analysis

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Process optimisation using the combination of simulation and experimental design approach: Application to wet air oxidation

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