Characteristics and Ash-Related Problem Prediction of Refused Derived Fuel from River Waste

Abstract

Environmental pollution, especially in rivers, increases every year, especially due to waste being dumped directly into rivers. Municipal solid waste can be processed into refused derived fuel to be used as a coal fuel mixture in CFPP. This research aims to analyse the risk of burning RDF originating from river waste as a single fuel and RDF as a mixed fuel for coal up to 30%. Solid fuel standard tests were used to determine sample characteristics and properties. To determine the initial risk of the ash deposition problem of RDF from river waste (RDF-R), the theoretical prediction indices are used. As a single fuel, RDF-R exhibits a high risk of slagging due to its high composition of Fe2O3 and CaO in the ash. Adding RDF-R to coal leads to increase of the slagging and fouling risk. However, addition up to 30% RDF-R to coal has insignificant effect in corrosion because the sulfur content in the coal can reduce the corrosive effects of chlorine.