AN ECONOMIC EVALUATION FOR SMALL SCALE THERMAL PLASMA WASTETO-ENERGY SYSTEMS

Summary

I.J. van der Walt1, J.T. Nel1, D. Glasser2, D. Hildebrandt2, L. Ngubevana2 1 The South African Nuclear Energy Corporation SOC Ltd. (Necsa), Elias Motsoaledi Street Ext., (Church Street West), Pelindaba, Brits Magisterial District, North-West Province, South Africa. 2 University of South Africa,Chemical Engineering Department, Cnr. Christiaan de Wet Road & Pioneer Avenue, Florida, Gauteng, South Africa Abstract: A combined small scale plasma-gasification system, developed by Necsa, and a Fischer-Tropsch syngas system, developed by Wits and Unisa, is being developed in order to determine the economic viability of such a system. A techno-economic model was developed and different scenarios will be discussed to describe the influence of different waste types and industry-specific influences. Keywords: Plasma gasification, plasma economic viability, small scale Fischer Tropsch. Background Experimentswith various types of biomass proved Plasma gasification that when different feed materials are gasified by The process of plasma gasification of municipal athermal plasma, the product mixture can be and other types of waste is not new [2-5]. changed by manipulating the plasma conditions in Commercial systems are available worldwide and order to generate a good quality syngas. The many plasma research projects are currently being compressed syngas is purified from any impurities conducted to cater for the treatment of various and in one integrated process Fischer-Tropsch (FT) types of waste.Unfortunately, the different waste

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