Paper details

Title:

Torrefied Biomass Coal Co-Firing Tests on a 500-Kwt Furnace

Author(s):

Paci, M., Leoni, P., Gasperetti, S., Rossi, N., Bonvicini, G., Coraggio, G., Faleni, M.

Document(s):

Abstract:

The feeding of biomass shares to coal­fired power plants is widely recognized as a relatively efficient solution for the power generation in order to reduce the greenhouse gas emissions with contained capital costs. The biomass pre­treatment by means of torrefaction can even increase the advantages of the co­firing technology providing a fuel with increased heating value, reduced specific volume, improved grindability. In order to evaluate the effects of torrefied biomass shares in coal power plants in terms of combustion efficiency, fouling tendency and conventional pollutant emissions, Enel Ingegneria e Ricerca (Enel E&R) and the International Flame Research Foundation (IFRF) carried out an experimental campaign on a 500­kWt pilot­scale furnace located in the Enel E&R Experimental Area in Leghorn (Italy). Biomass thermal shares up to 27% were tested with different oxygen excesses. The combustion chamber temperature and the fouling tendency were respectively measured by means of a pyrometer developed by IFRF and a probe developed by Enel E&R. The fouling deposits underwent Scanning Electron Microscope (SEM) analyses, the ash the standard laboratory analyses (ASTM D3682 and D6357), and, furthermore, iso­kinetic samplings on the flue­gas line were performed, which allowed to evaluate the Loss On Ignition (LOI) of the collected particles.

Keywords:

coal, emissions, fouling, cofiring, torrefied biomass, pilot test, combustion efficiency

Topic:

Industry Sessions

Subtopic:

Power & Heat

Event:

22nd European Biomass Conference and Exhibition

Session:

IBO.12.1

Pages:

1666 - 1671

ISBN:

978-88-89407-52-3

Paper DOI:

10.5071/22ndEUBCE2014-IBO.12.1

Price:

FREE