Details

Title:

Results of Fly Ash Quality for Disposal Options from High Thermal Shares Up to Pure Biomass Combustion in a Pilot-Scale and Large Scale Pulverized Fuel Power Plants

Author(s):

Fuller, A., Carbo, M., Savat, P., Kalivodova, J., Maier, J., Scheffknecht, G.

Document(s):

Abstract:

The successful utilization of biomass fuels supports the EU commission goals for 2020. In the frame of the European co-funded project DEBCO, advanced co-firing applications of various feedstocks have been demonstrated in lab-scale up to industrial scale. This paper reports on fly ash quality from combustion of high thermal shares of a herbaceous biomass and a woody biomass. Results show that for very high thermal shares in a large-scale industrial pulverized fuel facility the fly ash collected from the ESP still has a quality that meets limits set in EN450-1. For pure wood combustion in the large-scale industrial pulverized fuel facility, the results show that the limits for EN450-1 are not met, as expected. However, unexpectedly the fly ash still has a good pozzolanic quality when assessed to limits set in EN450-1. SEM-EDX analyses showed a good amount of aluminum and silica contents on particles in the fly ashes, suggesting a good pozzolanity. Results from a 0.5 MWth pilot-scale facility show that a herbaceous biomass co-fired up to 50 % thermal share does not seem to have any negative impact on existing fly ash utilization routes. A dual utilization of the fly ashes may be optimal.

Keywords:

biomass, co-combustion, renewable energy, fly ashes, residues, renewable energies, standards

Topic:

R&D on Biomass Conversion Technologies for Heating, Electricity and Chemicals

Subtopic:

Solid biofuel combustion in large utilities

Event:

21st European Biomass Conference and Exhibition

Session:

2DO.3.5

Pages:

678 - 691

ISBN:

978-88-89407-53-0

Paper DOI:

10.5071/21stEUBCE2013-2DO.3.5

Price:

FREE