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Istituto di ricerche sulla combustione
Soppresso il 01/10/2020

Torna all'elenco Contributi in rivista anno 2020

Contributo in rivista

Tipo: Articolo in rivista

Titolo: On the agglomeration tendency of carbonaceous fuels in fluidized beds

Anno di pubblicazione: 2020

Formato: Elettronico

Autori: M. Urciuolo, R. Solimene, P. Ammendola, S. Krusch, V. Scherer, P. Salatino, R. Chirone, O. Senneca

Affiliazioni autori: Istituto di Ricerche sulla Combustione, C.N.R., Naples, Italy Department of Energy Plant Technology, Ruhr-University, Bochum, Germany DICMAPI- University Federico II, Naples, Italy

Autori CNR:


Lingua: inglese

Abstract: Single particle pyrolysis and combustion experiments have been carried out in a lab scale fluidized bed reactor at temperatures of 600-850 C. The behavior of three different fuels is compared: a bituminous coal (Auguste Victoria), a typical bitumen used in the cement industry, a carbon rich solid waste from the refinery industry, characterized by a very high content of metals. The bituminous coal and the refinery waste particles, during the pyrolysis stage, produce interesting carbonsand aggregates. The outer shell of these aggregates is constituted by quartz sand particles embedded in a carbon matrix. The aggregates are hollow inside. The size of the cavity is comparable with that of the original coal particles, while the outer shell is larger. The increase of particle size due to aggregate formation slows down the combustion rate. For bitumen, no carbon-sand aggregates are observed. The relations between the fuel properties and aggregates formation are discussed, in particular the chemical composition and the pyrolysis kinetics are examined. It is concluded that heavy/tarry species formed in the early pyrolysis stages are most likely responsible for the capture of the sand particles and formation of aggregates.

Lingua abstract: inglese

Pagine totali: 11


Fuel Butterworth Scientific,
Paese di pubblicazione: Regno Unito
Lingua: inglese
ISSN: 0016-2361

Numero volume: 277

DOI: 10.1016/j.fuel.2020.118187

Referee: S: Internazionale

Stato della pubblicazione: Published version

Parole chiave:

  • coal
  • fluidized bed
  • pyrolysis
  • agglomeration
  • swelling
  • petroleum residues

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