Torrefied biomasses in a drop tube furnace to evaluate their utility in blast furnaces

Chen, Wei‐Hsin; Du, Shan‐Wen; Tsai, Chien‐Hsiung; Wang, Zhenyu

doi:10.1016/j.biortech.2012.01.163

Cited by 137 publications

(53 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Recently, the product of biochar from solid biomass has also been studied extensively [10]. The moisture and elemental oxygen and hydrogen contents as well as the volume of raw biomass are high, whereas its calorific value is low [11].…”

Section: Introductionmentioning

confidence: 99%

Characterization of solid and liquid products from bamboo torrefaction

et al. 2015

Self Cite

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Characterization of solid and liquid products from bamboo torrefaction

et al. 2015

Self Cite

View full text Add to dashboard Cite

“…Other modeling and experimental efforts of investigating Pulverized Coal Injections have been done to see the behavior on a particle level, with aid of, for example Computational Fluid Dynamics (CFD) [21,22] or drop-tube furnaces [23,24]. These types of investigations are useful to study a specific effect in a small zone of the furnace.…”

Section: Introductionmentioning

confidence: 99%

Biomass as blast furnace injectant – Considering availability, pretreatment and deployment in the Swedish steel industry

Wang¹,

Mellin

Lövgren³

et al. 2015

Energy Conversion and Management

138

View full text Add to dashboard Cite

a b s t r a c tWe have investigated and modeled the injection of biomass into blast furnaces (BF), in place of pulverized coal (PC) from fossil sources. This is the easiest way to reduce CO 2 emissions, beyond efficiencyimprovements. The considered biomass is either pelletized, torrefied or pyrolyzed. It gives us three cases where we have calculated the maximum replacement ratio for each. It was found that charcoal from pyrolysis can fully replace PC, while torrefied material and pelletized wood can replace 22.8% and 20.0% respectively, by weight.Our energy and mass balance model (MASMOD), with metallurgical sub-models for each zone, further indicates that (1) more Blast Furnace Gas (BFG) will be generated resulting in reduced fuel consumption in an integrated plant, (2) lower need of limestone can be expected, (3) lower amount of generated slag as well, and (4) reduced fuel consumption for heating the hot blast is anticipated. Overall, substantial energy savings are possible, which is one of the main findings in this paper.Due to the high usage of PC in Sweden, large amounts of biomass is required if full substitution by charcoal is pursued (6.19 TWh/y). But according to our study, it is likely available in the long term for the blast furnace designated M3 (located in Luleå).Finally, over a year with almost fully used production capacity (2008 used as reference), a 28.1% reduction in on-site emissions is possible by using charcoal. Torrefied material and wood pellets can reduce the emissions by 6.4% and 5.7% respectively. The complete replacement of PC in BF M3 can reduce 17.3% of the total emissions from the Swedish steel industry.

show abstract

“…VM lost from biomass consists of hydrogen gas and light hydrocarbons which have a low C content compared to H [28]. Hence, there is a substantially greater amount of H and O lost during torrefaction than there is C [29,30]. This is reflected in the increased FC and elemental C content observed in the proximate and ultimate analyses of torrefied Jatropha which…”

Section: Mass Yield Hhv Energy Yieldmentioning

confidence: 65%

Thermochemical and structural changes in Jatropha curcas seed cake during torrefaction for its use as coal co-firing feedstock

Madanayake

Gan

Eastwick

et al. 2016

Energy

View full text Add to dashboard Cite

(2016) Thermochemical and structural changes in Jatropha curcas seed cake during torrefaction for its use as coal co-firing feedstock. Energy, Access from the University of Nottingham repository: http://eprints.nottingham.ac.uk/32379/1/torrefaction%20paperfinalcombined.docx.pdf Copyright and reuse:The Nottingham ePrints service makes this work by researchers of the University of Nottingham available open access under the following conditions. This article is made available under the Creative Commons Attribution Non-commercial No Derivatives licence and may be reused according to the conditions of the licence. For more details see: http://creativecommons.org/licenses/by-nc-nd/2.5/ A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. AbstractJatropha curcas seed cake is a viable feedstock for co-firing with coal as it has the advantages of being renewable, carbon-neutral and sourced from a versatile plant.Torrefaction, a mild pyrolysis treatment by heating in a N 2 atmosphere, was investigated as a technique to improve the thermochemical properties of the biomass, primarily the higher heating value (HHV). The temperature and holding time were to beyond 300°C.

show abstract

Torrefied biomasses in a drop tube furnace to evaluate their utility in blast furnaces

Cited by 137 publications

References 29 publications

Characterization of solid and liquid products from bamboo torrefaction

Characterization of solid and liquid products from bamboo torrefaction

Biomass as blast furnace injectant – Considering availability, pretreatment and deployment in the Swedish steel industry

Thermochemical and structural changes in Jatropha curcas seed cake during torrefaction for its use as coal co-firing feedstock

Contact Info

Product

Resources

About