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Analysis of temperature and residence time of the exhausts in the combustion chamber of an incinerator plant (Contributo in atti di convegno)

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Analysis of temperature and residence time of the exhausts in the combustion chamber of an incinerator plant (Contributo in atti di convegno) (literal)

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Costa M. 1; Dell'Isola M. 2; Massarotti N. 3; Mauro A. 3 (2008)
Analysis of temperature and residence time of the exhausts in the combustion chamber of an incinerator plant
in 2008 ASME International Mechanical Engineering Congress and Exposition, Boston, Massachusetts (USA)
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PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION (literal)

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The interest for energy recovery from waste incineration has increased over the years, in order to reduce the number of landfills and produce electricity and heat. At the same time, concern for the impact such processes have on the environment has also grown, and to reduce such an impact, new legislation is being enforced in Europe and Italy. In particular, important restrictions are imposed on the temperature of the exhausts in the combustion chamber, which must be kept above certain values for a given period of time, depending on the type of waste that is being incinerated. Such conditions can be rather difficult and certainly very expensive to monitor with acceptable accuracy. For this reason, in practical applications the temperature of the exhausts in the chamber is usually calculated through semi-empirical and approximate models that relate the temperatures in different sections of the chamber. In this work, the authors present a numerical approach for the analysis of such models that can be used to quantify the uncertainty on this type of measurement due to the common approximations used in full scale incineration plants. The analysis is based on the CFD simulation of the thermo-fluid-dynamic field in the combustion chamber of an full scale plant in Italy, whose results have verified based on a comparison with the data collected during an experimental campaign. (literal)

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1) Istituto Motori, CNR, Napoli, Italy; 2) University of Cassino, Cassino, Italy; 3) University of Naples \"Parthenope\", Napoli, Italy. (literal)

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Analysis of temperature and residence time of the exhausts in the combustion chamber of an incinerator plant (literal)

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Abstract

The interest for energy recovery from waste incineration has increased over the years, in order to reduce the number of landfills and produce electricity and heat. At the same time, concern for the impact such processes have on the environment has also grown, and to reduce such an impact, new legislation is being enforced in Europe and Italy. In particular, important restrictions are imposed on the temperature of the exhausts in the combustion chamber, which must be kept above certain values for a given period of time, depending on the type of waste that is being incinerated. Such conditions can be rather difficult and certainly very expensive to monitor with acceptable accuracy. For this reason, in practical applications the temperature of the exhausts in the chamber is usually calculated through semi-empirical and approximate models that relate the temperatures in different sections of the chamber. In this work, the authors present a numerical approach for the analysis of such models that can be used to quantify the uncertainty on this type of measurement due to the common approximations used in full scale incineration plants. The analysis is based on the CFD simulation of the thermo-fluid-dynamic field in the combustion chamber of a full scale plant in Italy, whose results have verified based on a comparison with the data collected during an experimental campaign. (literal)

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