Effects of particle size on the fast pyrolysis of oil mallee woody biomass

Shen, Jun; Wang, Xiao Shan; Garcı̀a-Pèrez, Manuel; Mourant, Daniel; Rhodes, Martin; Li, Chun‐Zhu

doi:10.1016/j.fuel.2009.05.001

Cited by 309 publications

(207 citation statements)

References 36 publications

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“…Some of these studies show a strong relationship between fuel consumption and wood characteristics, which would contradict the use of standardized average figures (Liss 1987). Furthermore, wood characteristics may have a significant effect on particle size distribution, which is crucial to fuel handling efficiency (Jensen et al 2004), to its drying and reaction rate (Lu et al 2010), to the energy required for conversion into ethanol (Hosseini and Shah 2009), and to the yield of bio-oil obtained from pyrolysis (Shen et al 2009). …”

Section: Introductionmentioning

confidence: 99%

Determining the impact of some wood characteristics on the performance of a mobile chipper

Spinelli¹,

Magagnotti²,

Paletto³

et al. 2011

Silva Fenn.

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A study was conducted to determine the effect of some wood characteristics such as species, moisture content and tree part on the performance and product quality offered by a mobile industrial chipper, of the type commonly used for roadside chipping. Two main species, two tree parts and two moisture content levels were combined in a factorial design yielding 8 treatments, each replicated 5 or 6 times. A flow meter was installed on the chipper engine, and all chips produced were weighed and sampled for moisture content and particle size distribution. The results indicated that some wood characteristics such as species and moisture content have a secondary effect on chipper productivity and fuel consumption, which are primarily controlled by piece size. In particular, fuel consumption per unit dry mass seem to be rather constant and in the range of 3.2 l per oven dry ton. Moisture content and tree part may have a significant effect on the particle size distribution of chips. Of course, these results were only verified for the species used in the test and for industrial chippers, and may change if substantially different species or machines are used.

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Section: Introductionmentioning

confidence: 99%

Determining the impact of some wood characteristics on the performance of a mobile chipper

Spinelli¹,

Magagnotti²,

Paletto³

et al. 2011

Silva Fenn.

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show abstract

“…The positive effect of torrefaction on energy consumption during biomass size reduction can be captured only if the large particle size of biomass is utilized in the torrefaction process. A large particle size induces higher char production and lower liquid yield in the pyrolysis process [5][6][7]. However, how this affects the torrefaction process, or product yield and quality is not known.…”

mentioning

confidence: 99%

The Effects of Particle Size, Different Corn Stover Components, and Gas Residence Time on Torrefaction of Corn Stover

et al. 2012

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Large scale biofuel production will be possible only if significant quantities of biomass feedstock can be stored, transported, and processed in an economic and sustainable manner. Torrefaction has the potential to significantly reduce the cost of transportation, storage, and downstream processing through the improvement of physical and chemical characteristics of biomass. The main objective of this study was to investigate the effects of particle size, plant components, and gas residence time on the production of torrefied corn (Zea mays) stover. Different particle sizes included 0.85 mm and 20 mm. Different stover components included ground corn stover, whole corn stalk, stalk shell and pith, and corn cob shell. Three different purge gas residence times were employed to assess the effects of interaction of volatiles and torrefied biomass. Elemental analyses were performed on all of the samples, and the data obtained was used to estimate the energy contents and energy yields of different torrefied biomass samples. Particle density, elemental composition, and fiber composition of raw biomass fractions were also determined. Stalk pith torrefied at 280 °C and stalk shell torrefied at 250 °C had highest and lowest dry matter loss, of about 44% and 13%, respectively. Stalk pith torrefied at 250 °C had lowest energy density of about 18-18.5 MJ/kg, while cob shell torrefied at 280 °C had the highest energy density of about 21.5 MJ/kg. The lowest energy yield, at 59%, was recorded for stalk pith torrefied at 280 °C, whereas cob and stalk shell torrefied at 250 °C had highest energy yield at 85%. These differences were a consequence of the differences in particle densities, hemicellulose quantities, and chemical properties of the OPEN ACCESSEnergies 2012, 5 1200 original biomass samples. Gas residence time did not have a significant effect on the aforementioned parameters.

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“…With smaller particle size, biomass particles experienced higher heating rate inside of the pyrolysis reactor, which favored the further cracking of the lignin fraction, which is typically hard to completely decompose within a short time. The effects of biomass particle size (0.18 to 5.6 mm) on the yield and composition of bio-oil from the pyrolysis of Australian oil mallee woody biomass were investigated in a fluidized bed reactor at 500 °C (Shen et al 2009), and it was found that the yield of bio-oil decreased as the average biomass particle size was increased from 0.3 to about 1.5 mm. The authors ascribed this result to the impact of particle size in the production of lignin-derived compounds.…”

Section: Effect Of Fast Pyrolysis Conditions On the Phenols Yield Fromentioning

confidence: 99%

Optimization of Bark Fast Pyrolysis for the Production of Phenol-Rich Bio-oil

et al. 2013

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Bark is one of the most under-utilized types of lignocellulosic biomass in the forest industry. In this study, bark fast pyrolysis was optimized for phenols yield using response surface methodology (RSM), considering the pyrolysis temperature, gas flow rate, and biomass particle size. The bio-oil generated under optimal conditions was then characterized by gas chromatography-mass spectrometry (GC-MS), ultimate analysis, and several physical methods. A regression equation was estimated based on the statistical analysis. It was found that the optimal conditions for phenols yield were 485 °C (pyrolysis reaction temperature), 28 L/min (gas flow rate), and 0.35 mm (biomass particle size), giving an experimental phenols yield of 13.2 wt%. The bio-oil obtained in optimum conditions met ASTM standard D7544-12 and contained up to 30.42% phenols. This renewable, phenol-rich bio-oil may be a good feedstock for phenolic-based chemicals, such as phenolic resin and phenoplast.

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Effects of particle size on the fast pyrolysis of oil mallee woody biomass

Cited by 309 publications

References 36 publications

Determining the impact of some wood characteristics on the performance of a mobile chipper

Determining the impact of some wood characteristics on the performance of a mobile chipper

The Effects of Particle Size, Different Corn Stover Components, and Gas Residence Time on Torrefaction of Corn Stover

Optimization of Bark Fast Pyrolysis for the Production of Phenol-Rich Bio-oil

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