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Advancements in RDF co-firing demonstration project at ENEL Fusina Power Plant

pubblicazioni - Articolo

Advancements in RDF co-firing demonstration project at ENEL Fusina Power Plant

Vengono presentati alcuni risultati relativi al monitoraggio della corrosione nella camera di combustione e nel passo convettivo della caldaia e alle performances dei sistemi di filtrazione dei fumi nella Centrale ENEL di Fusina (VE), operante in regime di co-combustione di carbone e CSS (Combustibile Solido Secondario). Le attività sono state svolte nell¿ambito del progetto europeo DEBCO (Demonstration of large scale Biomass CO-combustion and supply chain integration).

Enel is carruing out a demonstration project at Fusina Power Plant aimed at proving the feasibility of high share RDF (Refuse Derived Fuel)/coal co-firing. Since 2004, RDF has been co-fired with coal on two 320 MWe boilers (units 3 and 4).From February 2009, the average share of co-firing has been increased up to 5% of thermal input. Fusina power plant is involved, in the European Founded DEBCO (Demonstration of Biomass Co-Combustion) project focused on the demonstration of large scale biomass co-firing and supply chain integration. In this framework, long term monitoring of RDF quality and of boiler performance is foreseen. Since October 2009 corrosion monitoring probes have been installed, both on boiler walls and convective pass. In order to monitor corrosion behavior also in ultra-super-critical (USC) conditions, corrosion probes with advances material will be installed. Performance of main air pollution control devices (APCD) has been monitored as well, through an extended experimental measurement, campaign carried out in October 2009. In this paper the ongoing activities are described including secondary fuel quality and milling performance monitoring, corrosion evaluation, slagging and flue gas cleaning system performance assessment. The aim of EU project is to demonstrate that RDF can be co-fired safely and with low impact on plant performance and will take to a general optimization of the fuel supply system and of the combustion process.

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