Caractérisation expérimentale de l’émission d’oxydes d’azote dans l’incinération des déchets ménagers en four à grilles

Abstract

In front of a deposit of waste in constant evolution, the incineration became a very interesting alternative within the fields of management of waste. Nevertheless the combustion is generative of polluting, notably gas among whom nitrogen oxides. The study of the mechanisms of formation of these species shows a very strong dependence of their yield face to face of the local level in oxygen. So, our study was led to determine the influence of the excess air on the formation of NOx during the incineration of municipal solid wastes. This study allows to note the importance of the distribution of the airs between the primary and secondary injections. Face à un gisement de déchets en constante évolution, l’incinération est devenue une alternative très intéressante au sein des filières de gestion des déchets. Néanmoins la combustion est génératrice de polluants, notamment gazeux parmi lesquels les oxydes d’azote. L’étude des mécanismes de formation de ces espèces montre une très forte dépendance de leur rendement de formation vis à vis de la richesse locale en oxygène. Ainsi, notre étude a été menée afin d’étudier l’influence des débits d’air comburant sur la formation des NOx lors de l’incinération des déchets ménagers en four à grille. Cette étude permet de noter l’importance de la répartition des airs entre les injections primaires et secondaires.

Improving Municipal Solid Waste Land Filling Disposal Process: Experiments with a Laboratory Scale Rotary Kiln

“…Municipal waste characterisations in France had showed that plastics materials are made with 91% of poly ethylene (P.E.T.) and 9% of polyamide 6 -6 [17]. Specials consist of plastics films and their polymers.…”

“…It consist of a cylinder slightly inclined (17), to which is appended the primary burner noted burner 1 (RG1). This cylinder have a diameter of 88 cm, measure 108 cm in length, is suspended on bearings ball which allow its rotation around its axis of symmetry as depicted in Figure 1.…”

Contribution to the Design of a Pottery Kiln Using as Fuel a Mixture of Cellulosic and Plastic Materials: Influence of the Proportion of Plastic on the Emissions of NO, CO<sub>2</sub>, O<sub>2</sub>

“…This program ("Reactor"), specific to this application, was developed by [10] and optimized by [8]. He had to be repeated and modified to apply to our study.…”