Fast pyrolysis of rice husk under different reaction conditions

Heo, Hyeon Su; Park, Hyun Ju; Dong, Jong-In; Park, Sunghoon; Kim, Seungdo; Suh, Dong Jin; Suh, Young‐Woong; Kim, Seung-Soo; Park, Young-Kwon

doi:10.1016/j.jiec.2010.01.026

Cited by 143 publications

(54 citation statements)

References 23 publications

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“…The main components of bio-oil were acetic acid, 1-hydroxy-2-propanone, and ethyl alcohol from the FTIR results. Heo et al (2010) studied the fast pyrolysis of rice husk in a fluidized bed at different reaction conditions. The optimal pyrolysis temperature for bio-oil production was between 400 and 450°C.…”

Section: Introductionmentioning

confidence: 99%

Sugarcane Bagasse Pyrolysis in a Carbon Dioxide Atmosphere with Conventional and Microwave-Assisted Heating

Lin

Chen

2015

Front. Energy Res.

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Pyrolysis is an important thermochemical method to convert biomass into bio-oil. In this study, the pyrolysis of sugarcane bagasse in a CO 2 atmosphere under conventional and microwave-assisted heating is investigated to achieve CO 2 utilization. In the microwave pyrolysis, charcoal is used as the microwave absorber to aid in pyrolysis reactions. The results indicate that the yields of pyrolysis products are greatly influenced by the heating modes. In the conventional heating, the prime product is bio-oil and its yield is in the range of 51-54 wt%, whereas biochar is the major product in microwave-assisted heating and its yield ranges from 61 to 84 wt%. Two different absorber blending ratios of 0.1 and 0.3 are considered in the microwave pyrolysis. The solid yield decreases when the absorber blending ratio decreases from 0.3 to 0.1, while the gas and liquid yields increase. This is attributed to more energy consumed for bagasse pyrolysis at the lower blending ratio. Hydrogen is produced under the microwave pyrolysis and its concentration is between 2 and 12 vol%. This arises from the fact that the secondary cracking of vapors and the secondary decomposition of biochar in an environment with microwave irradiation is easier than those with conventional heating.

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Section: Introductionmentioning

confidence: 99%

Sugarcane Bagasse Pyrolysis in a Carbon Dioxide Atmosphere with Conventional and Microwave-Assisted Heating

Lin

Chen

2015

Front. Energy Res.

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“…However, high molecular weight compounds were collected beyond the optimum gas velocity. Heo et al said higher fluidizing gas flow minimizes the possibility of the secondary reactions, such as thermal cracking, re-polymerization, and re-condensation [1].…”

Section: Influence Of Fluidized Bed Velocitymentioning

confidence: 99%

“…Heo et al [1] said that a higher feeding rate can efficiently prevent pyrolysis vapors from being converted into gas via secondary cracking in the dense bed, resulting in an increased bio-oil yield when the temperature of the dense bed is higher than that of freeboard. However, pyrolysis temperature in the bubbling fluidized bed pyrolyzer was lower than that of Heo et al [1], secondary cracking in the dense bed might increase with increasing feeding rates and resulted in an increase of gas yield.…”

Section: Influence Of Feeding Ratementioning

confidence: 99%

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Effect of Operation Conditions on Pyrolysis of Larch Sawdust in a Bubbling Fluidized Bed

Yoo¹,

Eom²,

Lee

2016

Applied Chemistry for Engineering

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In this study, a bubbling fluidized bed pyrolyzer (0.076 m I.D. and 0.8 m high) was employed to investigate the fast pyrolysis characteristics of larch sawdust which is abundant in Korea. The effects of operation conditions, such as bed temperature (350-550 ℃), fluidization velocity ratio (Uo/Umf : 2.0-6.0) and feeding rate (2.2-7.0 g/min) on product yields and their chemical components were studied. The number of chemical compounds in the bio-oil decreased with the increasing bed temperature because of secondary pyrolysis. The effects of the Uo/Umf ratio and feeding rate on bio-oil compositions were relatively lower than those of the bed temperature.

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“…Thermochemical conversion processes including liquefaction, pyrolysis and gasification were employed to convert lignocellulose into liquid fuel [3][4][5]. Among these methods, liquefaction is a preferred technology due to its mild operation temperature, which could avoid cross linked and reverse reaction during liquefaction process.…”

Section: Introductionmentioning

confidence: 99%

Hydro-liquefaction of woody biomass for bio-oil in supercritical solvent with [BMIM]Cl/NiCl2 catalyst

Peng

Liu

et al. 2015

Appl Petrochem Res

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Thermochemical liquefaction characteristics of sawdust were explored with ethanol as solvent and [BMIM]Cl-NiCl 2 as catalyst. The influences of liquefaction parameters including reaction temperature, residence time and hydrogen initial pressure on the sawdust conversion and products distribution were studied. The maximum bio-oil yield of 75.45 % and conversion of 86.01 % were obtained in ethanol at 320°C and 30 min under 10 MPa hydrogen pressure. The chemical composition of bio-oil and gaseous products derived from optimized conditions was analyzed via GC-MS and GC. These results showed that the dominant compounds of light oil were carboxylic acid, esters and phenol and its derivatives. In addition, the gaseous components consisted of CO 2 , CO, methane, ethane and ethene.

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Fast pyrolysis of rice husk under different reaction conditions

Cited by 143 publications

References 23 publications

Sugarcane Bagasse Pyrolysis in a Carbon Dioxide Atmosphere with Conventional and Microwave-Assisted Heating

Sugarcane Bagasse Pyrolysis in a Carbon Dioxide Atmosphere with Conventional and Microwave-Assisted Heating

Effect of Operation Conditions on Pyrolysis of Larch Sawdust in a Bubbling Fluidized Bed

Hydro-liquefaction of woody biomass for bio-oil in supercritical solvent with [BMIM]Cl/NiCl2 catalyst

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