An Investigation on the Interaction between Biomass and Coal during their Co-Pyrolysis

2019 ◽  
Vol 797 ◽  
pp. 299-308
Author(s):  
Engamba Esso Samy Berthold ◽  
Shun Li Fang ◽  
Yan Ting Xue ◽  
Yi Wang ◽  
Zhe Xiong ◽  
...  
Keyword(s):  
Thermogravimetric Analysis ◽  
Synergistic Effect ◽  
Rice Husk ◽  
Fast Pyrolysis ◽  
Pyrolysis Process ◽  
Oxygenated Compounds ◽  
Aromatic Components ◽  
Oil Characterization ◽  
Predicted Values ◽  
Auger Reactor

This study aims to investigate the interaction during the co-pyrolysis of Cangzhou coal and sawdust/rice husk. The synergistic is analyzed in the thermal behavior of the blends and the kinetics by thermogravimetric analysis (TG), also in the products yield (oil and char) from the fast co-pyrolysis and the oil characterization by GC-MS and UV fluorescence spectroscopy. Firstly TG experiment indicated the synergistic effect occurs during the co-pyrolysis process of the coal and rice husk occurs during the all the main pyrolysis (300-550°C) and that of the sawdust between 300-410°C (for the 50:50 and the 75:25 blends) and 300-550°C (for the 25:75 blend). Then the co-fast pyrolysis in a novel auger reactor increased the oil yield compared to the predicted values. The synergistic interaction promoted the oxygenated compounds, limited the SOx emissions, was less reactive and did not promote the aromatic components.

CFD analysis of fast pyrolysis process in a pilot-scale auger reactor

Fuel ◽  
2020 ◽  
Vol 273 ◽  
pp. 117782
Author(s):  
Salman Jalalifar ◽  
Rouzbeh Abbassi ◽  
Vikram Garaniya ◽  
Fatemeh Salehi ◽  
Sadegh Papari ◽  
...  
Keyword(s):  
Fast Pyrolysis ◽  
Pilot Scale ◽  
Cfd Analysis ◽  
Pyrolysis Process ◽  
Auger Reactor

Production and Characterization of Rice Husk Chars Obtained under Different Conditions

2013 ◽  
Vol 805-806 ◽  
pp. 228-231
Author(s):  
Wen Yan Li ◽  
Lei Qiang Zhao ◽  
Hang Tao Liao ◽  
Qiang Lu
Keyword(s):  
Physicochemical Properties ◽  
Carbon Content ◽  
Cooling Rate ◽  
Heating Rate ◽  
Rice Husk ◽  
Fast Pyrolysis ◽  
Pyrolysis Process ◽  
Reaction Conditions ◽  
Resident Time

Rice husk was subjected to slow and fast pyrolysis under different reaction conditions, to investigate the effects of several pyrolysis factors on the physicochemical properties of the rice husk chars, including the pyrolysis heating rate, cooling rate and resident time. The results indicated that the char yield did not show great changes during the slow pyrolysis process, while it was gradually decreased along with the resident time during the fast pyrolysis process. With the elevating of the pyrolysis conditions, the carbon content of the chars was increased monotonically, while the oxygen content was decreased. Moreover, the rice husk and its chars greatly differed in their functional groups, resulting from various decompositon, decarbonylation and aromatization reactions during the pyrolysis process.

Residence Time Influence on the Fast Pyrolysis of Loblolly Pine Biomass

2010 ◽  
Vol 132 (4) ◽  
Author(s):  
J. Rhett Mayor ◽  
Alexander Williams
Keyword(s):  
Thermogravimetric Analysis ◽  
Pinus Taeda ◽  
Residence Time ◽  
Loblolly Pine ◽  
Fast Pyrolysis ◽  
Residence Times ◽  
Pyrolysis Process ◽  
Heating Rates ◽  
Degradation Model ◽  
Two Component

Bio-oils were produced within a fast pyrolysis microreactor at 400°C from Pinus taeda (Loblolly pine) with varying residence times. This study has considered six residence times, evaluating the products of the reaction between 10 s and 120 s. The collected bio-oils and solids were analyzed for their calorific values and yields. Heating rates greater than 100°C/s were achieved, allowing for isothermal conditions throughout the majority of the reaction despite short residence times. The predictive capabilities of thermogravimetric analysis derived Arrhenius coefficients are evaluated and a new two component degradation model is empirically derived, showing a much improved representation of the fast pyrolysis process.

Physiochemical Properties of Pyrolysis Oil Derived from Fast Pyrolysis of Wet and Dried Rice Husk in a Free Fall Reactor

2014 ◽  
Vol 625 ◽  
pp. 604-607 ◽  
Author(s):  
Salman Raza Naqvi ◽  
Yoshimitsu Uemura ◽  
Noridah Binti Osman ◽  
Suzana Yusup ◽  
Mohd Fadhil Nuruddin
Keyword(s):  
Rice Husk ◽  
Oil And Gas ◽  
Fast Pyrolysis ◽  
Fixed Bed ◽  
Free Fall ◽  
Pyrolysis Oil ◽  
Pyrolysis Process ◽  
Physiochemical Properties ◽  
Fuels And Chemicals ◽  
Free Fall Reactor

Rice husk is considered as a massive agricultural lignocellulosic biomass residue for the production of bio-based fuels and chemicals products. The purpose of this study is to investigate the physiochemical properties of the pyrolysis-oil derived from wet and dried rice husk fast pyrolysis process. The experiments were performed in a drop type fixed-bed pyrolyzer at the pyrolysis temperature of 350 to 600 °C. The products, char, pyrolysis-oil and gas, yield are investigated. The pyrolysis-oil derived from dried rice husk contained higher Carbon and Hydrogen and less oxygen contents than the pyrolysis-oil obtained from wet rice husk. FT-IR results showed the oxygenated compounds present in both pyrolysis-oil. The pyrolysis oil from dried rice husk has higher concentration of hydrocarbons as compared to wet rice husk pyrolysis-oil. The dried rice husk pyrolysis-oil produced more phenols and less carboxylic acid as compared to wet rice husk pyrolysis-oil at 500 °C. More volatile released in dried rice husk conversion produced more volatile compounds. These findings suggest that the original moisture present in biomass samples is the major influencing parameter on the thermal degradation of biomass during fast pyrolysis process.

Effects of the pyrolysis process on the oil sorption capacity of rice husk

2012 ◽  
Vol 98 ◽  
pp. 166-176 ◽  
Author(s):  
I. Uzunov ◽  
S. Uzunova ◽  
D. Angelova ◽  
A. Gigova
Keyword(s):  
Sorption Capacity ◽  
Rice Husk ◽  
Pyrolysis Process ◽  
Oil Sorption

Bio-oil derived from banana pseudo-stem via fast pyrolysis process

2021 ◽  
Vol 148 ◽  
pp. 106034
Author(s):  
Rahmad Mohd Taib ◽  
Nurhayati Abdullah ◽  
Nur Syairah Mohamad Aziz
Keyword(s):  
Fast Pyrolysis ◽  
Pyrolysis Process ◽  
Bio Oil

scholarly journals Thermogravimetric analysis on rice husk ashes-based geopolymer paste

2018 ◽  
Vol 405 ◽  
pp. 012014
Author(s):  
N R A Nasruddin ◽  
N Mazlan ◽  
M S Mohd Basri ◽  
A H Mohamed Ariff ◽  
N A Mohd Nasir
Keyword(s):  
Thermogravimetric Analysis ◽  
Rice Husk ◽  
Geopolymer Paste

scholarly journals Study of the Combustion , Pyrolysis Characteristics and Synergistic Effect of Co-hydrocharsation Products of Oil Shale and Rice HuskStudy of the Combustion , Pyrolysis Characteristics and Synergistic Effect of Co-hydrocharsation Products of Oil Shale and Rice Husk

2021 ◽  
Author(s):  
Yaoxin LIU ◽  
Enyu Wang ◽  
Ze KAN
Keyword(s):  
Synergistic Effect ◽  
Functional Groups ◽  
Rice Husk ◽  
Oil Shale ◽  
Thermal Transformation ◽  
Combustion Process ◽  
Hydrothermal Temperature ◽  
Fossil Energy ◽  
Pyrolysis Characteristics ◽  
Pyrolysis Processes

Abstract Under the pressure of environmental problems and fossil energy shortage, countries all over the world are looking for fuel to replace fossil energy. Oil shale and rice husk are potential fuels, but they both have some problems, such as high ash content and low calorific value .In the present study,oil shale and rice husk were used as feedstock for the high quality fuel through hydrothermal approach,it provides a new way for the resource utilization of oil shale and rice.Thermogravimetric method was used to analyze the functional groups change and thermal transformation characteristics of mixed hydrochars prepared for oil shale(OS) and rice husk(RH) at different hydrothermal temperatures(150,200 and 250℃), including combustion and pyrolysis processes, and analyze the synergistic effects. Results showed that the co-hydrocharsization pretreatment had a significant effect on the thermal transformation behavior of oil shale and rice husk.On the one hand, the mixture of hydrocar has higher volatile content than its calculated value.On the other hand,a synergistic effect(promoting combustion and pyrolysis behavior) was found in both combustion and pyrolysis processes, and this effect was the most obvious when the hydrothermal temperature was around 200℃,and the characteristic peak of functional groups vibration was strong.Since the synergistic effect of pyrolysis process is lower than that of combustion process, co-hydrocharsation products are considered to be more suitable for combustion.These findings have positive significance of energy generation and utilization of organic waste by the combination of co-hydrocharsization modification and subsequent thermochemical process.

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