2015-Sustainable Industrial Processing Summit
SIPS 2015 Volume 3: Takano Intl. Symp. / Metals & Alloys Processing
| Editors: | Kongoli F, Noldin JH, Mourao MB, Tschiptschin AP, D'Abreu JC |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2015 |
| Pages: | 550 pages |
| ISBN: | 978-1-987820-26-3 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Charcoal as an Additive to Cokemaking: Co2 Reactivity Study
Bruno Flores1; Ismael Flores1; Adria Guerrero2; Daniel Orellana1; Juliana Goncalves Pohlmann1; Claudia Barbieri1; Angeles G. Borrego2; Eduardo Osorio1; Antonio Cezar Vilela1;1FEDERAL UNIVERSITY OF RIO GRANDE DO SUL, Porto Alegre, Brazil; 2INSTITUTO NACIONAL DEL CARBON - INCAR, Oviedo, Spain;
Type of Paper: Regular
Id Paper: 113
Topic: 3
Abstract:
The present work aimed to investigate the influence of charcoal addition of different particle sizes on metallurgical coke reactivity. Thus, an eucalyptus charcoal was added to a prime American medium volatile coking coal in three amounts (3, 5 and 8%) and in two different particle size ranges (below 1 mm and between 3 and 4 mm). Charges of the individual coal and coal/charcoal blends were carbonized in a laboratorial scale coke oven (1 kg). The reactivity of the produced bio-cokes and reference coke were examined and compared using thermal gravimetric analysis in a CO2 atmosphere. Morphological analyses via optical and scanning electronic microscopies using samples from before and after reactivity experiments were also carried out. Charcoal addition showed a tendency to increase coke reactivity and lower the temperature at which carbon gasification started. Morphological observations confirmed that charcoal particles tend to be preferentially consumed compared with the coke matrix. However, bio-cokes produced with charcoal addition up to 3% for both particle sizes and up to 5% for the coarser particle size had a similar behavior in terms of CO2-reactivity as the reference coke. The effects of charcoal addition on coke texture and CO2 surface area appeared to justify the differences in coke reactivity.
Keywords:
CO2; Charcoal; Coke; Energy;References:
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