Impact of the Addition of Pyrolysed Forestry Waste to the Coking Process on the Resulting Green Biocoke
The suitability of the charcoal obtained from woody biomass pyrolysis in a continuous screw reactor at 573, 773, 973, 1173 K temperature profile as fuel and reducing agent in metallurgical applications has been evaluated, in order to reduce the CO<sub>2</sub> emissions in these processes...
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2021-04-01
|
Series: | Metals |
Subjects: | |
Online Access: | https://www.mdpi.com/2075-4701/11/4/613 |
id |
doaj-2611099409d94dbd82f302bc386d3ed5 |
---|---|
record_format |
Article |
spelling |
doaj-2611099409d94dbd82f302bc386d3ed52021-04-09T23:06:51ZengMDPI AGMetals2075-47012021-04-011161361310.3390/met11040613Impact of the Addition of Pyrolysed Forestry Waste to the Coking Process on the Resulting Green BiocokeJon Solar0Blanca María Caballero1Carmen Barriocanal2Alexander Lopez-Urionabarrenechea3Esther Acha4Chemical and Environmental Engineering Department, School of Engineering of Bilbao, University of the Basque Country (UPV/EHU), Plaza Ingeniero Torres Quevedo, 1, 48013 Bilbao, SpainChemical and Environmental Engineering Department, School of Engineering of Bilbao, University of the Basque Country (UPV/EHU), Plaza Ingeniero Torres Quevedo, 1, 48013 Bilbao, SpainInstituto de Cienciay Tecnología del Carbono (INCAR-CSIC), IFrancisco Pintado Fe, 26, 33011 Oviedo, SpainChemical and Environmental Engineering Department, School of Engineering of Bilbao, University of the Basque Country (UPV/EHU), Plaza Ingeniero Torres Quevedo, 1, 48013 Bilbao, SpainChemical and Environmental Engineering Department, School of Engineering of Bilbao, University of the Basque Country (UPV/EHU), Plaza Ingeniero Torres Quevedo, 1, 48013 Bilbao, SpainThe suitability of the charcoal obtained from woody biomass pyrolysis in a continuous screw reactor at 573, 773, 973, 1173 K temperature profile as fuel and reducing agent in metallurgical applications has been evaluated, in order to reduce the CO<sub>2</sub> emissions in these processes. On the one hand, a comparative study between charcoal and commercial reducers has been carried out. On the other hand, different proportions of this charcoal have been added to an industrial coking coal blend and carbonized together in a semi-pilot movable wall oven, to study the influence in the plastic and mechanical properties of the produced biocoke. The charcoal obtained fulfills the requirements to be used as fuel and reducer in non-ferrous processes where no mechanical strength is required, like rotary kilns, in substitution of fossil reducers. Its higher heating value (>32 MJ kg<sup>−1</sup>) is in the range or over those of fossil coals, with the advantage of not containing polluting elements (S, N) and having less ash. The addition of up to 0.9 wt.% almost does not affect the quality of the biocoke; but the addition of ³2 wt.% degrades the biocoke mechanical and plastic properties below the demanded requirements. Moreover, biocoke reactivity seems independent of the amount of charcoal added.https://www.mdpi.com/2075-4701/11/4/613pinus radiata woodchipspyrolysischarcoalcoking processbiocoke |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jon Solar Blanca María Caballero Carmen Barriocanal Alexander Lopez-Urionabarrenechea Esther Acha |
spellingShingle |
Jon Solar Blanca María Caballero Carmen Barriocanal Alexander Lopez-Urionabarrenechea Esther Acha Impact of the Addition of Pyrolysed Forestry Waste to the Coking Process on the Resulting Green Biocoke Metals pinus radiata woodchips pyrolysis charcoal coking process biocoke |
author_facet |
Jon Solar Blanca María Caballero Carmen Barriocanal Alexander Lopez-Urionabarrenechea Esther Acha |
author_sort |
Jon Solar |
title |
Impact of the Addition of Pyrolysed Forestry Waste to the Coking Process on the Resulting Green Biocoke |
title_short |
Impact of the Addition of Pyrolysed Forestry Waste to the Coking Process on the Resulting Green Biocoke |
title_full |
Impact of the Addition of Pyrolysed Forestry Waste to the Coking Process on the Resulting Green Biocoke |
title_fullStr |
Impact of the Addition of Pyrolysed Forestry Waste to the Coking Process on the Resulting Green Biocoke |
title_full_unstemmed |
Impact of the Addition of Pyrolysed Forestry Waste to the Coking Process on the Resulting Green Biocoke |
title_sort |
impact of the addition of pyrolysed forestry waste to the coking process on the resulting green biocoke |
publisher |
MDPI AG |
series |
Metals |
issn |
2075-4701 |
publishDate |
2021-04-01 |
description |
The suitability of the charcoal obtained from woody biomass pyrolysis in a continuous screw reactor at 573, 773, 973, 1173 K temperature profile as fuel and reducing agent in metallurgical applications has been evaluated, in order to reduce the CO<sub>2</sub> emissions in these processes. On the one hand, a comparative study between charcoal and commercial reducers has been carried out. On the other hand, different proportions of this charcoal have been added to an industrial coking coal blend and carbonized together in a semi-pilot movable wall oven, to study the influence in the plastic and mechanical properties of the produced biocoke. The charcoal obtained fulfills the requirements to be used as fuel and reducer in non-ferrous processes where no mechanical strength is required, like rotary kilns, in substitution of fossil reducers. Its higher heating value (>32 MJ kg<sup>−1</sup>) is in the range or over those of fossil coals, with the advantage of not containing polluting elements (S, N) and having less ash. The addition of up to 0.9 wt.% almost does not affect the quality of the biocoke; but the addition of ³2 wt.% degrades the biocoke mechanical and plastic properties below the demanded requirements. Moreover, biocoke reactivity seems independent of the amount of charcoal added. |
topic |
pinus radiata woodchips pyrolysis charcoal coking process biocoke |
url |
https://www.mdpi.com/2075-4701/11/4/613 |
work_keys_str_mv |
AT jonsolar impactoftheadditionofpyrolysedforestrywastetothecokingprocessontheresultinggreenbiocoke AT blancamariacaballero impactoftheadditionofpyrolysedforestrywastetothecokingprocessontheresultinggreenbiocoke AT carmenbarriocanal impactoftheadditionofpyrolysedforestrywastetothecokingprocessontheresultinggreenbiocoke AT alexanderlopezurionabarrenechea impactoftheadditionofpyrolysedforestrywastetothecokingprocessontheresultinggreenbiocoke AT estheracha impactoftheadditionofpyrolysedforestrywastetothecokingprocessontheresultinggreenbiocoke |
_version_ |
1721532030828675072 |