WIT Press


Flue-gas Coupling Of A Waste Incinerator With A Lignite-fired Coal Boiler: Assessment Of The Best-suited Injection Concept By Computational

Price

Free (open access)

Paper DOI

10.2495/CMEM050161

Volume

41

Pages

14

Published

2005

Size

885 kb

Author(s)

Th. Hilber, Ch. Deeg, S. Kiening, J. Vehlow, J. Maier, H. Seifert, U. Schnell & G. Scheffknecht

Abstract

The work presented in this paper focuses on the combustion behaviour of the coupled UPSWING (Unification of power plant and solid waste incineration on the grate.) process as well as on the reduction and destruction of pollutants like NOx and PCDD/F. The concept, which has been developed by the Forschungszentrum Karlsruhe, describes the coupling of a waste incinerator to a coal-fired power plant for heat and/or electricity generation, both on the steam and on the flue gas side. Possible injection concepts for the incinerator flue gases were investigated by large-scale CFD simulation in order to evaluate the impact of a wet, NOx-rich flue gas stream on the overall combustion behaviour of a pulverised coal-fired boiler. The necessary input data for the large-scale simulation was elaborated in various experiments at a semi-technical combustion reactor. The acquired data was used to validate the reliability of the coal combustion model as a prerequisite for the large-scale simulation. The results of both experimental and theoretical work are used to determine the best-suited coupling concept. Keywords: sustainable waste management, pollutant destruction, CFD, NOx. and experimental methods

Keywords

sustainable waste management, pollutant destruction, CFD, NOx. and experimental methods