Modeling of a Porous Reactor for Supercritical Water Oxidation by a Residence Time Distribution Study

Autor:	E. Pomier, P. Guichardon, G. Charbit, Françoise Charbit, E. Fauvel, Stéphane Sarrade, C. Joussot-Dubien
Rok vydání:	2003
Předmět:	Supercritical water oxidation Materials science Supercritical carbon dioxide Precipitation (chemistry) Cascade General Chemical Engineering Tube (fluid conveyance) General Chemistry Mechanics Residence time distribution Porosity Industrial and Manufacturing Engineering Corrosion
Zdroj:	Industrial & Engineering Chemistry Research. 42:2122-2130
ISSN:	1520-5045 0888-5885
DOI:	10.1021/ie0207616
Popis:	Supercritical water oxidation (SCWO) performances are limited by salt precipitation and corrosion when it comes to treating real wastes. A porous reactor has been developed to overcome these problems. It consists of a concentric double-wall reactor in which the corrosive reactants are maintained inside an alumina porous tube, whereas pressure resistance is ensured by a stainless steel external vessel. Hydrodynamics in the reactor is thought to be rather complex. Thus, a residence time distribution study was performed to investigate the flow pattern. The experiments were carried out in supercritical carbon dioxide for experimental consideration. According to the experimental results, the axially dispersed-plug-flow model as well as the tanks in the series model can be used to describe the tubular reacting zone when there is no radial flow through the porous barrier. The whole reactor can then be considered as a cascade of equal ideally mixed tanks with a stage radial feed. This proposed hydrodynamic model ...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8eb1f69b6a1ddaa1bf5dcf4bbe9c7497 https://doi.org/10.1021/ie0207616 Zobrazit plný text záznamu