Syngas Production from Pyrolysis of Nine Composts Obtained from Nonhybrid and Hybrid Perennial Grasses

Hlavsová, Adéla; Corsaro, Agnieszka; Raclavská, Helena; Juchelková, Dagmar; Frydrych, J.

doi:10.1155/2014/723092

Cited by 29 publications

(18 citation statements)

References 41 publications

(96 reference statements)

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“…Superficial velocity = 3.0 L/min × 1 m 3 /1000 L × 1/2.29 × 10 −3 m 2 × 1 min/60 s = 0.0218 m/s. (10) In this study, the ER was manipulated by varying the air flowrate while the biomass feeding rate remained unchanged. The effects of ER on product yield are shown in Figure 3.…”

Section: Er = (Actual Weight Air/weight Of Dry Biomass)/(stoichiometrmentioning

confidence: 99%

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Thermochemical Conversion of Napier Grass for Production of Renewable Syngas

et al. 2019

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Fuel resource diversification is a global effort to deviate from non-renewable fossil fuels. Biomass has been identified as an alternative solid biofuel source due to its desirable properties and carbon neutrality. As reported in the literature, biomass can positively contribute towards combating climate change while providing alleviation for energy security issue. As part of efforts to diversify biomass resources, this work intends to explore the potential of Napier grass, one type of energy crop, for the production of renewable syngas via gasification. This energy crop is originally from Africa, which is highly productive with low cost (40 tonnes per year per hectare). Limited studies were conducted to analyze the potential of such an energy crop as a fuel source, which is the subject of this work. In order to analyze the full potential of such energy crop, the physical and chemical characteristics of this biomass was first analyzed. To determine the productivity of syngas from this biomass, fluidized bed gasifier was used in this work. The effects of gasification process parameters (i.e., equivalence ratio and temperature) on product yield and producer gas compositions were examined. Besides, the effects of equivalence ratio towards higher heating value of syngas and carbon conversion efficiency were analyzed. Based on the ultimate analysis results, the molecular formula of Napier gas was CH1.56O0.81N0.0043. Meanwhile, the higher heating value of such biomass was determined as 16.73 MJ/kg, which was comparable to other biomasses. It is noted that in this work, the volatile matter was determined as 85.52% and this promoted gasification process remarkably. The dynamics of the reactions involved were observed as a significant variation in product yield and biogas components were recorded at varying equivalence ratio and gasifier operating temperature.

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Section: Er = (Actual Weight Air/weight Of Dry Biomass)/(stoichiometrmentioning

confidence: 99%

“…Napier grass (NG) has gained considerable attention in recent years due to its desirable characteristics as potential renewable fuel. This energy crop of African origin is highly productive with low establishment cost [10]. The annual yield is 40 tonnes per hectare with multiple harvest frequency.…”

Section: Introductionmentioning

confidence: 99%

Thermochemical Conversion of Napier Grass for Production of Renewable Syngas

et al. 2019

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“…The increase of the pyrolysis temperature in the limits between 300qC and 800qC led to a decrease of the gas density value (Figure 3). High temperatures caused modification of the density, this varying from 1.1 (300qC) to 1.7 (800qC) but keeping good value for an energy valuable gas [27].…”

Section: Fig 2 Trend For Concentration Of Gas Compounds Generated Fmentioning

confidence: 99%

Bio-Gaseous Fuels from Agricultural Waste Pyrolysis (Part II)

2019

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The results presented in the following paper are making the aim of a broadly research concentrated to investigate the temperature effects on agricultural waste pyrolysis performed in a batch reactor. Briefly, the motivation along with experimental features and main results generated from the rape straw low temperature pyrolysis (300°C-500°C) have been offered in the first part submitted at the MSE 2019 conference, with the title: Bio-gaseous fuels from agricultural waste pyrolysis (Part I). The current section (second part of the study) presents the results obtained in case of the rape straw high temperature pyrolysis (600°C-800°C). Overall, as expected, the augmentation of the operating temperature, inhibits the bio-oil and biochar formation, enhancing the pyrolysis gas production. The distribution of gaseous components varies depending on temperature and residence time. The transition stages and the formation of the main pyrolysis gaseous species are also presented and discussed. The most dominant chemical element from the pyrolysis gas is N2, due to its constant presence as non-oxidant agent in the process. Considering the same premise, the rape straw pyrolysis gaseous species distribution in the temperature range of 600°C-800°C varies between: 47%-58% CO2, 18%-28% CO, 14%-35% H2, while the pyrolysis gas density 1.1-1.4 kg/m3 and higher heating value 23-52 MJ/kg.

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“…The temperature of the reactor was controlled by a PID temperature controller (Model 4836, Parr), whereas the temperature of the reaction was sensed by a K-type thermocouple. More detailed description of the set-up has been described elsewhere [28]. Two sets of experiments were conducted.…”

Section: Pyrolysis Experimentsmentioning

confidence: 99%