Evaluation on oxy-fuel co-combustion behavior of Chinese lignite and eucalyptus bark

Wei, Yuanhang; Chen, Meiqian; Niu, Shibo; You, Xingquan; Xue, Feng

doi:10.1007/s10973-015-5050-x

Cited by 26 publications

(7 citation statements)

References 27 publications

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“…As shown in Table , it is evident that the ignition temperatures of PKS samples increased progressively along with the increase in wet torrefaction severity. The high O/C ratio in samples can promote thermal devolatilization, resulting in lower ignition temperatures for raw PKS and the PKS wet-torrefied under mild conditions . In contrast, no apparent trend can be observed for the burnout temperature; hence, the time taken for the combustion of samples could not be deduced.…”

Section: Resultsmentioning

confidence: 97%

“…The high O/C ratio in samples can promote thermal devolatilization, resulting in lower ignition temperatures for raw PKS and the PKS wettorrefied under mild conditions. 42 In contrast, no apparent trend can be observed for the burnout temperature; hence, the time taken for the combustion of samples could not be deduced. In addition, the burnout temperature (T b ) for raw PKS determined through the "conversion method" by Lu and Chen showed huge disparity from the literature.…”

Section: Combustion Studies Of Raw Andmentioning

confidence: 97%

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Enhancement of Palm Kernel Shell Fuel Properties via Wet Torrefaction: Response Surface, Optimization, and Combustion Studies

Gan

Lim

et al. 2019

Energy Fuels

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Wet torrefaction emerges as a potential biomass pretreatment process to enhance the fuel properties of biomass. The present research was aimed to determine the energy-efficient conditions for the wet torrefaction of palm kernel shell via response surface methodology. The inherent relationship between fuel properties and operating conditions such as temperature (180–220 °C), residence time (10–30 min), and the palm kernel shell (PKS)/water ratio (0.1:0.2) was investigated, and temperature was observed to be the most significant parameter. Higher heating value of PKS was increased from 18.9 to 23.4 MJ/kg after torrifying at 220 °C, 30 min, and a water-to-biomass ratio at 0.2. The outcome of thermal analysis confirmed that wet-torrefied PKS exhibited an improved combustion behavior. The highest value of the comprehensive performance index for torrefied PKS was 5.687 × 10–10 min–2 °C–3. Wet torrefaction improved the fuel properties of PKS as the torrefied biomass had a higher carbon content, lower oxygen content, and lower ash content than raw PKS.

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Section: Resultsmentioning

confidence: 97%

Section: Combustion Studies Of Raw Andmentioning

confidence: 97%

Enhancement of Palm Kernel Shell Fuel Properties via Wet Torrefaction: Response Surface, Optimization, and Combustion Studies

Gan

Lim

et al. 2019

Energy Fuels

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“…The kinetic parameters of biomass and their derived biochars can be determined by the Doyle's method (Eq. 5) (Wei et al 2016), (5) where β is the heating rate (°C/min), T is the absolute temperature (K), A is the preexponential factor (min -1 ), Ea is the activation energy (kJ/mol), R is the universal gas constant (mol/K), and α is the conversion degree of the sample at any time.…”

Section: Characterization Of Torrefaction and Pyrolysis Productionmentioning

confidence: 99%

Effect of the Torrefaction Temperature on the Structural Properties and Pyrolysis Behavior of Biomass

Zheng¹,

Tao²,

Yang³

et al. 2017

BioResources

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To improve prospects for high-value utilization of biomass, torrefaction pretreatments were conducted at 210, 230, 250, 270, and 300 °C with a reaction time of 30 min. The pyrolysis of torrefied biomass was also performed on a fixed-bed reactor system at 450 °C. The effect of torrefaction temperature on the yield, energy yield, structure, physicalchemical characteristics, and production composition of bio-oil was studied. The torrefaction pretreatment improved the fuel characteristics of pyrolysis products. When the torrefaction temperature was increased, the -OH and C=O contents decreased, the C=C contents increased, the pyrolysis peak temperature decreased, the residual carbon contents noticeably increased, and the Ea value remained in the range of 69 to 129 kJmol -1. The pore volume increased and the crystallinity index decreased due to degradation and recrystallization. The solid yield of pyrolysis biomass decreased sharply in contrast to the liquid yield. When the torrefaction temperature increased, the bio-oil yield decreased from 36.82 wt.% to 20.13 wt.%. The phenol content in the bio-oil markedly increased; however, oxygen-containing compounds such as acids, sugars, and furans, significantly decreased, which indicated that torrefaction pretreatment efficiently improved the quality of the fuel.

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“…The alkali and alkaline earth metals in biofuels can induce catalytic activity during co‐combustion . By non‐isothermal thermogravimetric analysis (TGA), it indicated that blending biomass improved the burning rate of coals in air, oxygen enriched air, and O 2 /CO 2 combustion . Moreover, an interactive effect between coal and biomass was detected during their co‐combustion in air, oxygen enriched air, and O 2 /CO 2 combustion .…”

Section: Introductionmentioning

confidence: 99%

“…By non‐isothermal thermogravimetric analysis (TGA), it indicated that blending biomass improved the burning rate of coals in air, oxygen enriched air, and O 2 /CO 2 combustion . Moreover, an interactive effect between coal and biomass was detected during their co‐combustion in air, oxygen enriched air, and O 2 /CO 2 combustion . Co‐combustion offers lower NOx emission, and NOx emission decreases with increasing biomass blending ratio .…”

Section: Introductionmentioning

confidence: 99%

Experimental study of the combustion and NO emission behaviors during cofiring coal and biomass in O₂/N₂ and O₂/H₂O

Zhou

et al. 2018

Asia-Pacific J Chem Eng

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Evaluation on oxy-fuel co-combustion behavior of Chinese lignite and eucalyptus bark

Cited by 26 publications

References 27 publications

Enhancement of Palm Kernel Shell Fuel Properties via Wet Torrefaction: Response Surface, Optimization, and Combustion Studies

Enhancement of Palm Kernel Shell Fuel Properties via Wet Torrefaction: Response Surface, Optimization, and Combustion Studies

Effect of the Torrefaction Temperature on the Structural Properties and Pyrolysis Behavior of Biomass

Experimental study of the combustion and NO emission behaviors during cofiring coal and biomass in O₂/N₂ and O₂/H₂O

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Evaluation on oxy-fuel co-combustion behavior of Chinese lignite and eucalyptus bark

Cited by 26 publications

References 27 publications

Enhancement of Palm Kernel Shell Fuel Properties via Wet Torrefaction: Response Surface, Optimization, and Combustion Studies

Enhancement of Palm Kernel Shell Fuel Properties via Wet Torrefaction: Response Surface, Optimization, and Combustion Studies

Effect of the Torrefaction Temperature on the Structural Properties and Pyrolysis Behavior of Biomass

Experimental study of the combustion and NO emission behaviors during cofiring coal and biomass in O2/N2 and O2/H2O

Contact Info

Product

Resources

About

Experimental study of the combustion and NO emission behaviors during cofiring coal and biomass in O₂/N₂ and O₂/H₂O