PCDD/PCDF emissions from co-combustion of coal and PVC in a bubbling fluidised bed boiler |
| |
Authors: | JM Sánchez-Hervás L Armesto J Otero-Ruiz Schramm KW |
| |
Affiliation: | a CIEMAT, Fossil Fuels Department, Avda. Complutense 22, 28040 Madrid, Spain b GSF-Forschungszentrum für Umwelt und Gesundheit, Institut für Ökologische Chemie, Ingolstädter Landstr. 1, D-85764 Neuherberg, Germany c TUM, Wissenschaftszentrum Weihenstephan für Ernährung und Landnutzung, Department für Biowissenschaften, Weihenstephaner Steig 23, 85350 Freising, Germany |
| |
Abstract: | This paper reports on the results obtained in the study of the co-combustion of PVC with hard coal from South Africa in a 0,5 MWth Bubbling Fluidised Bed Boiler. The research has included the study of the effect of combustion temperature, fluidisation velocity and PVC content. The addition of urea to the raw fuel, as a dioxin-preventing compound has also been evaluated. Results have been analysed in terms of combustion efficiency, major pollutants emission (NOx, CO), and PCDD/Fs formation in the flue gas and in the fly ash. Under the experimental conditions tested, co-combustion of coal and PVC has proved to be feasible from the combustion efficiency and emission of PCDD/Fs points of view, whose levels remained below limits set by existing legislation on persistent organic pollutants. The addition of solid urea to the fuel blend reduces the amount of chlorinated compounds emitted. However, it has a negative impact on nitrogen pollutants formation |
| |
Keywords: | Co-combustion Bubbling fluidised bed Gaseous pollutants PCDD PCDF |
本文献已被 ScienceDirect 等数据库收录! |
|