Influence of biomass torrefaction parameters on fast pyrolysis products under flame-equivalent conditions

Pielsticker, Stefan; Möller, Georg; Gövert, Benjamin Maximilian; Kreitzberg, Thobias; Hatzfeld, O.; Yönder, Özlem; Angenent, Vanessa; Hättig, Christof; Schmid, Rochus; Kneer, Reinhold

doi:10.1016/j.biombioe.2018.08.014

Cited by 15 publications

(4 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The obtained results from the proximate analyses are as follows: volatile matter content for the miscanthus, hops, sewage sludge, and mixtures were 82.8 ± 3.3, 82.2 ± 0.3, 56.0 ± 2.2, 67.9 ± 2.7, and 62.1 ± 2.5 wt.%, respectively. The results of volatile compounds were higher in the lignocellulosic biomasses than in nonlignocellulosic biomass, which indicated that lignocellulosic biomasses possessed higher reactivity compared to non-lignocellulosic materials [73,74]. Consequently, the contents of fixed carbon were significantly lower (<12 wt.%) than those of the volatile matter, especially in the lignocellulosic biomasses.…”

Section: Properties Of Raw Biomass Samplesmentioning

confidence: 88%

Improving Lignocellulosic and Non-Lignocellulosic Biomass Characteristics through Torrefaction Process

et al. 2022

View full text Add to dashboard Cite

In this study, three locally available biomasses, namely miscanthus, hops, sewage sludge, and additionally, their mixtures, were subjected to the torrefaction process to improve their fuel properties. The torrefaction process was conducted at 250–350 °C and 10–60 min in a nitrogen (N2) environment. The torrefaction temperature and time were studied to evaluate the selected biomass materials; furthermore, heating values, mass and energy yields, enhancement factors, torrefaction severity indexes (TSI), and energy-mass co-benefit indexes (EMCI) were calculated. In addition, thermogravimetric (TGA) and Fourier transform infrared analyses (FTIR) were performed to characterize raw and torrefied biomass under the most stringent conditions (350 °C and 60 min). The results showed that with increasing torrefaction temperature and duration, mass and energy yields decreased, and heating values (HHVs) increased for all studied biomasses. The results of the TSI and EMCI indexes showed that the optimum torrefaction conditions were as follows: 260 °C and 10 min for pure miscanthus and hops, whilst this could not be confirmed for the sewage sludge. Furthermore, the combination of sewage sludge and the above-mentioned types of lignocellulosic biomass exhibited better fuel properties than sewage sludge alone.

show abstract

Section: Properties Of Raw Biomass Samplesmentioning

confidence: 88%

Improving Lignocellulosic and Non-Lignocellulosic Biomass Characteristics through Torrefaction Process

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The major conditions that affect the outcome of pyrolysis are temperature and RT. [57] TG analysis improves the understanding of the pyrolysis process. It is a technique applied for diverse kinetic analysis of the pyrolysis method.…”

Section: Pyrolysismentioning

confidence: 99%

Generation of Sustainable Energy from Agro‐Residues through Thermal Pretreatment for Developing Nations: A Review

Ibitoye

Jen

Mahamood

et al. 2021

Adv Energy and Sustain Res

View full text Add to dashboard Cite

Energy is a prerequisite for any nation's industrial, social, and economic advancements. [1][2][3][4] Energy can broadly be categorized into renewable and nonrenewable energies. Nonrenewable energies are energy that cannot be replenished over a short period. Examples of such energy are coal, nuclear energy, natural gas, and crude oil. Renewable energies, in contrast, are those energies that are replenishable over a short period. This form of energy includes solar, hydro, tidal, wind, biomass energy, etc. Biomass energy is the energy generated from biomass materials. Biomass material could be woody (such as teak, mahogany), nonwoody (such as agro-residues, industrial waste), and animal materials. [5] Agroresidues are described as all organic materials that are generated as byproducts from agricultural activities. These byproducts constitute the main part of biomass feedstock's total annual production, which forms an essential and sustainable source of energy for industrial and domestic applications. [6] They are material that are of benefit to humankind, though their economic benefits are less than the cost of transformation for advantageous use. [7] Agro-residues can be divided into residues generated on the field and residues generated during the processing of agricultural products. [8] Field-based residues include but are not limited to tobacco stalks, maize stalks, sugar cane tops, rice straw, soybean straw/pods, and cocoa pods. In contrast, process-based include peanuts shell, rice husk, maize cob, bagasse, and coffee husk. Agro-residues are available in large quantities in an area with a high level of agricultural activities. [9] In developing nations, major agricultural activities are recorded in the rural areas, resulting in a larger quantity of agro-residues in these areas. [10,11] Most of the time, the farmers in developing nations' dump these residues in an open field or

show abstract

“…Quite a few factors have been reported to affect the product of torrefaction-temperature, residence or dwelling time, and particle sizes. However, the most significant factors are temperature and residence time [11,17,18].…”

Section: Introductionmentioning

confidence: 99%

“…The results showed that high-standard torrefied briquettes could be produced on a commercial scale. The effect of torrefaction temperature on thermal degradation of woody biomass (beech wood) and nonwoody biomass (miscanthus) of northern Germany origin was investigated by Pielsticker et al [17]. Fuel basic properties such as proximate, particle size, ultimate analyses, char yields, and HHV were investigated.…”

Section: Introductionmentioning

confidence: 99%

Improving the Combustion Properties of Corncob Biomass via Torrefaction for Solid Fuel Applications

et al. 2021

View full text Add to dashboard Cite

The overdependence on fossils as the primary energy source has led to climate change, global warming, and the emission of greenhouse gas. As a result, the United Nations, while setting the goals for the year 2030, has made the provision of a green environment and energy one of the top priorities. In this study, the suitability of corncob for green energy production was investigated. The improvement of corncob’s thermal and combustion properties via the torrefaction process was considered for solid fuel applications. The raw corncob was collected, sorted, and dried for seven days before being used for the torrefaction experiment. Different torrefaction temperatures (200, 240, and 260 °C) and residence times (20, 40, 60 min) were studied. There was no particle reduction—samples were torrefied as collected (whole corncob). The results show that torrefaction temperature and residence time affect the torrefaction products yields along with their properties. Thermal and combustion properties were improved with an increase in torrefaction temperature and residence time. The higher heating value and energy density of the torrefied corncob varied between 17.26 and 18.89 MJ/kg, and 3.23 and 5.66 GJ/m3, respectively. High torrefaction temperature and residence time lead to low solid yield; however, liquid and gas yields increase with torrefaction temperature and residence time. The solid yields varied from 27.57 to 52.23%, while the liquid and gas yields varied from 31.56 to 44.78% and 16.21 to 27.65%, respectively. The properties of corncob improve after torrefaction and are suitable for solid fuel application.

show abstract

Influence of biomass torrefaction parameters on fast pyrolysis products under flame-equivalent conditions

Cited by 15 publications

References 51 publications

Improving Lignocellulosic and Non-Lignocellulosic Biomass Characteristics through Torrefaction Process

Improving Lignocellulosic and Non-Lignocellulosic Biomass Characteristics through Torrefaction Process

Generation of Sustainable Energy from Agro‐Residues through Thermal Pretreatment for Developing Nations: A Review

Improving the Combustion Properties of Corncob Biomass via Torrefaction for Solid Fuel Applications

Contact Info

Product

Resources

About