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Ind. Eng. Chem. Res. 2011, 50 (2), pp 775–784
Francisco Jimenez-Espadafor, Juan R. Portela, Violeta Vadillo, Jezabel Sanchez-Oneto , Jose A. Becerra Villanueva , Miguel Torres Garcia , and Enrique J. Martinez de la Ossa
Departamento de Ingenieria Energeetica y Mecánica de Fluidos, Escuela Teecnica Superior de Ingenieros, Universidad de Sevilla, Camino de los descubrimientos s/n 41092, Sevilla, Spain, and Departamento de Ingenieria Quimica y Tecnologia de Alimentos, Facultad de Ciencias, Universidad de Cádiz, 11510 Puerto Real (Cádiz), Spain
Abstract
The destruction of industrial wastewaters by supercritical water oxidation (SCWO) has been studied intensively in the last two decades due to the powerful and promising advantages of this technology. However, the SCWO process is not yet commercially established due to several drawbacks that limit its application as a general treatment, process costs being one of those limitations. In an effort to enhance the viability of SCWO as a commercial process, a study was performed in a pilot plant (25 kg/h) used to treat industrial oily wastes by SCWO, and a simulation was carried out to evaluate the viability of energy production on an industrial scale. The SCWO pilot plant effluent is good for producing hot water or steam by recovering heat of waste organics. Both alternatives are evaluated for a SCWO industrial plant design with 1000 kg/h, with it being possible to recover a maximum of 118 kW, that is, 71% of the energy content of the wastewater.
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