Application of fast pyrolysis char in an electric arc furnace

Funke, Axel; Demus, T.; Willms, Thomas; Schenke, Lea; Echterhof, Thomas; Niebel, A.; Pfeifer, Herbert; Dahmen, Nicolaus

doi:10.1016/j.fuproc.2018.02.013

Cited by 21 publications

(26 citation statements)

References 18 publications

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“…In that case it could even be feasible to cover the heat demand for steam production with the pyrolysis gas. All of the produced char would then be available for gasification within the bioliq® concept or other potential applications [52,53]. These observations may prove important advantages for the Dry case even though less organic liquids are produced.…”

Section: Aspen Simulations: Calculation Of Heat Flowsmentioning

confidence: 99%

Moisture content as a design and operational parameter for fast pyrolysis

Fonseca

Funke²,

Niebel³

et al. 2019

Journal of Analytical and Applied Pyrolysis

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Highlights1. Wheat straw of three different moisture contents were subjected to fast pyrolysis 2. In contrast to expectations, drying of feedstock led to lower organic oil yields 3. These experimental results were used to model product distribution in Aspen Plus® 4. Pyrolysis gas can theoretically supply the heat demand of the process 5. Alternatively, a dryer can be integrated using waste heat for feedstock drying ii

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Section: Aspen Simulations: Calculation Of Heat Flowsmentioning

confidence: 99%

Moisture content as a design and operational parameter for fast pyrolysis

Fonseca

Funke²,

Niebel³

et al. 2019

Journal of Analytical and Applied Pyrolysis

Self Cite

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“…Funke et al [48] investigated the use of a biomass carbonisate from wheat straw fast pyrolysis as charge carbon substitute in the EAF. The carbonisate is a by-product of a biofuel production process and was pretreated by agglomeration prior to the melting trials in a pilot-scale EAF.…”

Section: Biomass Based Alternativesmentioning

confidence: 99%

Review on the Use of Alternative Carbon Sources in EAF Steelmaking

Echterhof

2021

Metals

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Steelmaking in the electric arc furnace (EAF), either scrap-based or based on hydrogen direct reduced iron, will in future contribute substantially to the reduction of CO2 emissions in the iron and steel industry. However, there still will be the need to introduce carbon into the EAF process either to carburize the steel or to create foaming slag to improve the energy efficiency of the melting process. So, to reach the emission reduction goals set around the world, it will be necessary to substitute fossil charge and injection carbon used in EAF steelmaking with alternative carbon sources. This review presents the recent research on carbon-neutral biomass-based and circular rubber or plastics-based carbon sources and their potential to substitute fossil charge or injection carbon in the EAF process. It also discusses the current state-of-the art and suggests further opportunities and needs for research and development to use alternative carbon sources to produce a really green and carbon neutral and/or fully circular steel.

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“…Approximately 15-20% char is obtained after fast pyrolysis [157]. The physical properties of fast pyrolysis chars are rather interesting, because they are different from those of the slow pyrolysis chars; in particular, they have lower surface areas and higher volatile content [157,158]. Fast pyrolysis chars can be used as fuel or as adsorbent with an optional activation [157][158][159][160], and since they are stable in soil, they may be used in amendment applications [161].…”

Section: Fast Pyrolysismentioning

confidence: 99%

“…The physical properties of fast pyrolysis chars are rather interesting, because they are different from those of the slow pyrolysis chars; in particular, they have lower surface areas and higher volatile content [157,158]. Fast pyrolysis chars can be used as fuel or as adsorbent with an optional activation [157][158][159][160], and since they are stable in soil, they may be used in amendment applications [161]. Recently, fast pyrolysis chars were proposed to Processes 2021, 9, 87 6 of 24 be combined with fast pyrolysis liquids to produce bioslurries, a feedstock for gasification to produce drop-in fuels by the bioliq TM process [160,162,163].…”

Section: Fast Pyrolysismentioning

confidence: 99%

State-of-the-Art Char Production with a Focus on Bark Feedstocks: Processes, Design, and Applications

Şen

Pereira

2021

Processes

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In recent years, there has been a surge of interest in char production from lignocellulosic biomass due to the fact of char’s interesting technological properties. Global char production in 2019 reached 53.6 million tons. Barks are among the most important and understudied lignocellulosic feedstocks that have a large potential for exploitation, given bark global production which is estimated to be as high as 400 million cubic meters per year. Chars can be produced from barks; however, in order to obtain the desired char yields and for simulation of the pyrolysis process, it is important to understand the differences between barks and woods and other lignocellulosic materials in addition to selecting a proper thermochemical method for bark-based char production. In this state-of-the-art review, after analyzing the main char production methods, barks were characterized for their chemical composition and compared with other important lignocellulosic materials. Following these steps, previous bark-based char production studies were analyzed, and different barks and process types were evaluated for the first time to guide future char production process designs based on bark feedstock. The dry and wet pyrolysis and gasification results of barks revealed that application of different particle sizes, heating rates, and solid residence times resulted in highly variable char yields between the temperature range of 220 °C and 600 °C. Bark-based char production should be primarily performed via a slow pyrolysis route, considering the superior surface properties of slow pyrolysis chars.

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Application of fast pyrolysis char in an electric arc furnace

Cited by 21 publications

References 18 publications

Moisture content as a design and operational parameter for fast pyrolysis

Moisture content as a design and operational parameter for fast pyrolysis

Review on the Use of Alternative Carbon Sources in EAF Steelmaking

State-of-the-Art Char Production with a Focus on Bark Feedstocks: Processes, Design, and Applications

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