Analysis of the Rice Husk Pyrolysis Products from a Fluidized Bed Reactor

Hsu, Chen-Pei; Huang, An‐Ni; Kuo, H.P.

doi:10.1016/j.proeng.2015.01.244

Cited by 19 publications

(7 citation statements)

References 8 publications

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“…Rel For all of the samples, the main components of the liquid collected from the second condenser were phenolic compounds that were produced by the degradation of lignin. Powder vinasse and extraction sludge showed 50% of phenolic compounds, which is a very similar result to those reported in the literature [49][50][51]. The liquid fraction obtained from the press mud pyrolysis contained the highest proportion of alkanes (25.1%), although powder vinasse presented heavier alkenes, up to C32.…”

Section: Press Mudsupporting

confidence: 88%

Evaluation of Press Mud, Vinasse Powder and Extraction Sludge with Ethanol in a Pyrolysis Process

et al. 2019

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The effluents of the sugar and bio-ethanol industry, mainly vinasse as well as lignocellulosic waste, are produced in high volumes. Therefore, their treatment and valorization would reduce the environmental impact and make this industry more productive and competitive. The purpose of this study was to determine the potential use of press mud (lignocellulosic waste), vinasse powder, and vinasse sludge from an extraction process with ethanol, as raw materials for conventional pyrolysis evaluating the physicochemical characteristics that affect this thermochemical process, such as calorific power, density, ash content, volatile material, moisture and nitrogen, sulfur, carbon and hydrogen content, thermogravimetric profile, and quantification of lignin cellulose and hemicellulose. The batch pyrolysis experiments showed that all three wastes could be converted successfully into more valuable products. The powder vinasse led to the formation of the lowest content of bio-char (42.7%), the highest production of volatiles (61.6 wt.%), and the lowest ash content (20.5 wt.%). Besides, it showed the high heating value of 15.63 MJ/kg. Meanwhile, the extraction sludge presented the highest liquid yield (32%) with the lowest gas formation (18.2 wt.%) and the lowest heating value of 8.57 MJ/kg. Thus, the sludge could be a good feedstock for production of bio-oil and bio-char.

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Section: Press Mudsupporting

confidence: 88%

Evaluation of Press Mud, Vinasse Powder and Extraction Sludge with Ethanol in a Pyrolysis Process

et al. 2019

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“…High biooil yield up to 75 % can be obtained under a careful control of process parameters [10][11][12]. Studies on pyrolysis of RH to bio-oil have been carried out by many researchers [13][14][15][16][17][18][19][20][21][22][23][24]. Bio-oil yields between 25 and 38 wt% rich in acid and ketones are mostly recorded during the pyrolysis of RH at around 600°C [15,16,19,[21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

“…Studies on pyrolysis of RH to bio-oil have been carried out by many researchers [13][14][15][16][17][18][19][20][21][22][23][24]. Bio-oil yields between 25 and 38 wt% rich in acid and ketones are mostly recorded during the pyrolysis of RH at around 600°C [15,16,19,[21][22][23][24]. Catalytic pyrolysis is also being used towards improving the oil quality from RH, and a considerable degree of deoxygenation is achieved at the detriment of oil yield [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Co-pyrolysis of Rice Husk with Underutilized Biomass Species: A Sustainable Route for Production of Precursors for Fuels and Valuable Chemicals

Mohammed

Lim

Kazi

et al. 2016

Waste Biomass Valor

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In this study, co-pyrolysis of rice husk with underutilized biomass, Napier grass and sago waste was carried out in a fixed bed reactor at 600°C, 30°C/min and 5 L/min nitrogen flowrate. Two-phase bio-oil (organic and aqueous) was collected and characterized using standard analytical techniques. 34.13-45.55 wt% total boil-oil yield was recorded using assorted biomass compared to pure risk husk biomass with 31.51 wt% yield. The organic phase consist mainly benzene derivatives with higher proportion in the oil from the co-pyrolysis process relative to the organic phase from the pyrolysis of the individual biomass while the aqueous phase in all cases was predominantly water, acids, ketones, aldehydes, sugars and traces of phenolics. This study has demonstrated a good approach towards increasing valorization of rice husk in a single reaction step for the production of high grade bio-oil, which can be transformed into fuel and valuable chemicals.

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“…The average biochar recovery of the reactor was 31.75% (dry basis). Natarajan and Ganapathy (2009) reported that average char yield at 550 °C is about 34% and Hsu, et al, (2015) reported average char yield of 30.65% at the temperature 600 °C and at a feeding rate of 10 g/min. Thus, the obtained results were within the satisfactory level.…”

Section: Biochar Recovery and The Mass Balance Of The Reactormentioning

confidence: 99%

Performance evaluation of a down draft double chamber pyrolysis reactor under field conditions

2018

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Sequestration of carbon through production of biochar has been recognized as a feasible approach to combat global warming. The application of biochar production technology in industrial scale is still new to developing countries due to high complexity and specificity of pyrolysis technology. Therefore, this study aimed to evaluate a small scale pyrolysis unit (Down Draft Double Chamber pyrolysis reactor-DDDC reactor) to be used in continuous biochar production with the use of paddy husk as the both feedstock and fuel material. The temperature variation, syngas composition and energy value, mass and energy balances of the DDDC reactor were evaluated through field trials. The average temperature varied from 330 °C to 560 °C from bottom to the top of the reactor fulfilling the temperature requirement for pyrolysis. However, fluctuations in temperature were observed during trials due to low energy supply through paddy husk as the fuel. This suggested a need of using a supplementary fuel source to operate the reactor. The biochar recovery of the reactor was 32% (dry matter basis) and the average biochar production rate was 1 kg/h for material input of 4.42 kg/h of paddy husk and 0.77 kg/h of coconut shell as fuel sources. The average raw syngas composition (v/v) was 20.78% CO,

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Analysis of the Rice Husk Pyrolysis Products from a Fluidized Bed Reactor

Cited by 19 publications

References 8 publications

Evaluation of Press Mud, Vinasse Powder and Extraction Sludge with Ethanol in a Pyrolysis Process

Evaluation of Press Mud, Vinasse Powder and Extraction Sludge with Ethanol in a Pyrolysis Process

Co-pyrolysis of Rice Husk with Underutilized Biomass Species: A Sustainable Route for Production of Precursors for Fuels and Valuable Chemicals

Performance evaluation of a down draft double chamber pyrolysis reactor under field conditions

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