On the kinetic rate of biomass particle decomposition - Experimental and numerical analysis

Kardaś, Dariusz; Hercel, Paulina; Wardach-Święcicka, Izabela; Polesek-Karczewska, Sylwia

doi:10.1016/j.energy.2020.119575

Cited by 6 publications

(3 citation statements)

References 41 publications

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“…The effect was especially profound for higher-severity torrefaction conditions (Figure 4). This is well in line with the published sources [42,108,109]. As a consequence of partial loss of volatiles, ash content was also a subject of increase.…”

Section: Torrefied Bsg As a Solid Fuelsupporting

confidence: 90%

Synergetic Co-Production of Beer Colouring Agent and Solid Fuel from Brewers’ Spent Grain in the Circular Economy Perspective

Jackowski¹,

Niedźwiecki²,

Mościcki³

et al. 2021

Sustainability

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Brewers’ Spent Grain is a by-product of the brewing process, with potential applications for energy purposes. This paper presents the results of an investigation aiming at valorization of this residue by torrefaction, making product for two purposes: a solid fuel that could be used for generation of heat for the brewery and a colouring agent that could replace colouring malt for the production of dark beers. Decreased consumption of malt for such purposes would have a positive influence on the sustainability of brewing. Torrefaction was performed at temperatures ranging between 180 °C and 300 °C, with a residence time between 20 and 60 min. For the most severe torrefaction conditions (300 °C, 60 min), the higher heating value of torrefied BSG reached 25 MJ/kg. However, the best beer colouring properties were achieved for mild torrefaction conditions, i.e., 180 °C for 60 min and 210 °C for 40 min, reaching European Brewery Convention colours of 145 and 159, respectively. From the solid fuel properties perspective, the improvements offered by torrefaction in such mild conditions were modest. Overall, the obtained results suggest some trade-off between the optimum colouring properties and optimum solid fuel properties that need to be considered when such dual-purpose torrefaction of BSG for brewery purposes is implemented.

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Section: Torrefied Bsg As a Solid Fuelsupporting

confidence: 90%

Synergetic Co-Production of Beer Colouring Agent and Solid Fuel from Brewers’ Spent Grain in the Circular Economy Perspective

Jackowski¹,

Niedźwiecki²,

Mościcki³

et al. 2021

Sustainability

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“…However, the volumetric productivity (g L −1 h −1 ) of biochemical pathways may be one to two orders of magnitude lower than those of thermochemical pathways and thus require large reactors to achieve the same level of production. 44,45 Thus carbon removal will generally be an auxiliary benefit to biochemical conversion for energy and materials. There are two primary, high TRL biochemical pathways for bioenergy products with carbon removal, as shown in Fig.…”

Section: Carbon Negative Bioproductsmentioning

confidence: 99%

Leveraging the bioeconomy for carbon drawdown

et al. 2023

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“…Due to the high contents of alkali metals (mainly sodium and potassium) in biomass fuels, the ash deposits lead to slagging and fouling problems [4,12] that eventually lead to the deterioration of heating surfaces and lowering heat transfer rates [13,14]. The slagging and fouling tendencies are facilitated by the presence of chlorine, which contributes to the potassium transfer in the gas phase and to further chemical reactions, and this is considered to eventually initiate corrosion [15,16].…”

Section: Introductionmentioning

confidence: 99%

Biomass Combustion in the Helically Coiled Domestic Boiler Combined with the Equilibrium/Chemical Kinetics CFD Approach

2023

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In the face of threats related to energy supply and climate change, the use of biomass is gaining importance, particularly in distributed energy systems. Combustion of biomass, including residue biomass, is considered one of the routes to increase the share of renewables in energy generation. The modeling of gaseous phase reactions remains crucial in predicting the combustion behavior of biomass and pollutant emissions. However, their simulation becomes a challenging task due to the computational cost. This paper presents a numerical analysis of the combustion process of a gas mixture released during biomass decomposition in a domestic 25 kW coil-type boiler. Three types of biogenic fuels were taken into consideration. The work aimed at examining the available tools for modeling gas burning, thus the geometry of the system was limited only to the 2D case. The thermodynamic equilibrium composition of pyrolysis gas was determined and implemented in Ansys to simulate the process. The computational results showed the potential of detailed, but reduced, combustion mechanisms of CH4/CO/H2 mixtures in predicting the main process features. The mechanism involving 85 reactions appeared to be more reliable compared to that comprising 77 reactions, particularly for volatiles with higher H2 content, whilst offering an acceptable calculation time. The burning characteristics obtained for volatiles with less CH4 and more H2 are in good agreement with the real operation conditions reported for the boiler.

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On the kinetic rate of biomass particle decomposition - Experimental and numerical analysis

Cited by 6 publications

References 41 publications

Synergetic Co-Production of Beer Colouring Agent and Solid Fuel from Brewers’ Spent Grain in the Circular Economy Perspective

Synergetic Co-Production of Beer Colouring Agent and Solid Fuel from Brewers’ Spent Grain in the Circular Economy Perspective

Leveraging the bioeconomy for carbon drawdown

Biomass Combustion in the Helically Coiled Domestic Boiler Combined with the Equilibrium/Chemical Kinetics CFD Approach

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