Treatment and use of bottom bed waste in biomass fluidized bed combustors
authors Modolo, RCE; Tarelho, LAC; Teixeira, ER; Ferreira, VM; Labrincha, JA
nationality International
journal FUEL PROCESSING TECHNOLOGY
author keywords Ash; Biomass; BFB; Combustion; Heavy metals; Waste
keywords AGGLOMERATION CHARACTERISTICS; PARTICLE AGGLOMERATION/DEFLUIDIZATION; CONCENTRATION PROFILES; ASH FORMATION; FUELS; INCINERATION; CONVERSION; BOILERS; SLUDGE; WOOD
abstract Bottom bed waste (BBW) from combustion of forest biomass residues was characterized aiming its use as partial substitute of fresh bed sand (FBS) in industrial bubbling fluidized bed combustors (BFBC). BBW partide size distribution, elemental composition (mainly Si, Ca, Al, Na, K, P and Mg) and mineralogy were evaluated considering also the influence of the characteristics of the biomass used as fuel. Biomass combustion experiments were developed using a pilot-scale bubbling fluidized bed combustor. The operating conditions during the experiments were monitored, namely the flue gas composition (CO2, O-2 and CO), temperature and pressure, and compared with data collected from BFBC located in two industrial biomass thermal power plants. Physical, chemical and mineralogical characteristics of the FBS and BBW revealed that practices related with biomass handling at the forest strongly influence the BBW properties, in terms of not only coarse soil particle addition (>1.0 mm) but also mineralogically. However, the results obtained here indicate that by sieving of BBW it is possible to recover almost 60% of the original BBW particles (size between 0.3 and 1.0 mm), which have properties that allow its reuse as substitute of FBS for bed make-up in industrial BFBC. (C) 2014 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 0378-3820
year published 2014
volume 125
beginning page 170
ending page 181
digital object identifier (doi) 10.1016/j.fuproc.2014.03.040
web of science category Chemistry, Applied; Energy & Fuels; Engineering, Chemical
subject category Chemistry; Energy & Fuels; Engineering
unique article identifier WOS:000337876300021
  ciceco authors
  impact metrics
journal analysis (jcr 2017):
journal impact factor 3.956
5 year journal impact factor 4.307
category normalized journal impact factor percentile 81.746
dimensions (citation analysis):
altmetrics (social interaction):



 


Sponsors

1suponsers_list_ciceco.jpg