Study on Biomass Pyrolysis Kinetics

2004 ◽  
Vol 128 (3) ◽  
pp. 493-496 ◽  
Author(s):  
Xiaodong Zhang ◽  
Min Xu ◽  
Rongfeng Sun ◽  
Li Sun
Keyword(s):  
Model Simulation ◽  
Chemical Conversion ◽  
Main Reaction ◽  
Biomass Feedstock ◽  
Biomass Pyrolysis ◽  
Pyrolysis Kinetics ◽  
Pyrolysis Mechanism ◽  
Pyrolysis Characteristics ◽  
Pyrolysis Behavior ◽  
Pyrolysis Kinetic

Pyrolysis is the most fundamental process in thermal chemical conversion of biomass, and pyrolysis kinetic analysis is valuable for the in-depth exploration of process mechanisms. On the basis of thermal gravity analysis of different kinds of biomass feedstock, thermal kinetics analysis was performed to analyze the pyrolysis behavior of biomass. With the apparent kinetic parameters derived, a kinetic model was proposed for the main reaction section of biomass pyrolysis process. The pyrolysis characteristics of three kinds of biomass material were compared in view of corresponding biochemical constitution. Through model simulation of different pyrolysis processes, the diversity in pyrolysis behavior of different kinds of biomass feedstock was analyzed and pyrolysis mechanism discussed. The results derived are useful for the development and optimization of biomass thermal chemical conversion technology.

Study on Biomass Pyrolysis Kinetics

2005 ◽  
Author(s):  
Xiaodong Zhang ◽  
Min Xu ◽  
Rongfeng Sun ◽  
Li Sun
Keyword(s):  
Model Simulation ◽  
Chemical Conversion ◽  
Main Reaction ◽  
Biomass Feedstock ◽  
Pyrolysis Process ◽  
Biomass Pyrolysis ◽  
Pyrolysis Kinetics ◽  
Pyrolysis Mechanism ◽  
Pyrolysis Characteristics ◽  
Pyrolysis Behavior

Pyrolysis is the most fundamental process in thermal chemical conversion of biomass, and pyrolysis kinetic analysis is valuable for the in-depth explore of process mechanism. On the basis of thermal gravity analysis of different kinds of biomass feedstock, thermal kinetics analysis was performed to analyze the pyrolysis behavior of biomass. With the apparent kinetic parameters derived, kinetic model was proposed for the main reaction section of biomass pyrolysis process. The pyrolysis characteristics of three kinds of biomass material were compared in view of corresponding biochemical constitution. Through model simulation of different pyrolysis process, the diversity in pyrolysis behavior of different kinds of biomass feedstock was analyzed, and pyrolysis mechanism discussed. The results derived are useful for the development and optimization of biomass thermal chemical conversion technology.

Pyrolysis Characteristics and Kinetics of Walnut Shell

2015 ◽  
Vol 713-715 ◽  
pp. 2993-2996
Author(s):  
Fu Sheng Yang ◽  
Ming Zhang ◽  
Min Qun Lin ◽  
Ben Long Wei ◽  
Zhi Yuan Yang
Keyword(s):  
Diffusion Model ◽  
Walnut Shell ◽  
Relevant Parameter ◽  
Kinetics Parameters ◽  
Pyrolysis Mechanism ◽  
Pyrolysis Characteristics ◽  
Pyrolysis Behavior ◽  
Integral Methods ◽  
Kinetics Of

Pyrolysis behavior and kinetics of walnut shell were investigated using thermogravimetic analysis in this study. It was shown that kinetics parameters and model of the walnut shell pyrolysis were determined by the relevant parameter of kinetics calculated using Achar differential and the Šatava-Šesták integral methods. 3D Diffusion model (Z-L-T equation) was fitted to walnut shell pyrolysis mechanism with activated energy from 184.08 to 196.88 KJ/mol.

scholarly journals Elucidating The Thermal Decomposition Mechanism and Pyrolysis Characteristics of Biorefinery-Derived Humins From Sugarcane Bagasse And Rice Husk

2021 ◽  
Author(s):  
Julio César de Jesus Gariboti ◽  
Marina Gontijo Souza Macedo ◽  
Vinícius Matheus Silva Macedo ◽  
Yesid Javier Rueda-Ordóñez ◽  
Emília Savioli Lopes ◽  
...  
Keyword(s):  
Activation Energy ◽  
Sugarcane Bagasse ◽  
Rice Husk ◽  
Isoconversional Method ◽  
Reaction Model ◽  
Thermochemical Conversion ◽  
Thermal Decomposition Mechanism ◽  
Pyrolysis Kinetics ◽  
Pyrolysis Mechanism ◽  
Pyrolysis Characteristics

Abstract Biomass-derived humins produced in the biorefining of biomass represent an attractive feedstock for thermochemical processes and other carbon-derived platform chemicals. However, in most works, humins are merely a by-product that is not further analyzed. This work presents the purification and characterization of humins derived from sugarcane bagasse and rice husks (H-SCB and H-RH respectively), followed by the kinetic and thermodynamic analysis of its pyrolysis. Pyrolysis was examined via thermogravimetric analysis (TGA), and a global reaction model was adopted to address pyrolysis kinetics. To understand the pyrolysis process of humins and boost the quality of fit between the kinetic model and thermoanalytical data, the analyses were based on the Vyazovkin isoconversional method. The activation energy of H-SCB increased from 166.09 to 329.76 kJ mol-1. In contrast, the activation energy of H-RH decreased from 163.31 to 84.99 kJ mol-1. According to the results of the generalized master plot approach, the governing reaction mechanism shifted among order-based models, nucleation, and diffusion-controlled particle mechanisms. Derived thermodynamic properties showed that the heat absorbed helps the humins to achieve a more ordered state close to a conversion of 0.50. As far as we know, these findings are the first reported data on the forecast kinetic curves and pyrolysis mechanism of biorefinery-derived humins from sugarcane bagasse and rice husk, and these results will enable process design for the thermochemical conversion of these emerging materials to produce energy and other products.

scholarly journals Investigation of element migration characteristics and product properties during biomass pyrolysis: a case study of pine cones rich in nitrogen

RSC Advances ◽  
2021 ◽  
Vol 11 (55) ◽  
pp. 34795-34805
Author(s):  
Jielong Wu ◽  
Liangcai Wang ◽  
Huanhuan Ma ◽  
Jianbin Zhou
Keyword(s):  
Thermogravimetric Analysis ◽  
Biomass Pyrolysis ◽  
Pyrolysis Behavior ◽  
Pine Cone ◽  
Element Migration ◽  
Pine Cones

To further understand the element migration characteristics and product properties during biomass pyrolysis, herein, pine cone (PC) cellulose and PC lignin were prepared, and their pyrolysis behavior was determined using thermogravimetric analysis (TGA).

Research on Pyrolysis Kinetics of Shenhua Coal and Direct Liquefaction Residue

2012 ◽  
Vol 550-553 ◽  
pp. 2758-2762 ◽  
Author(s):  
Xi Jie Chu ◽  
Yong Gang Wang ◽  
Li Hong Zhao
Keyword(s):  
Experimental Data ◽  
Activation Energy ◽  
Kinetic Parameters ◽  
Heating Rate ◽  
Coal Pyrolysis ◽  
Pyrolysis Kinetics ◽  
Differential Heating ◽  
Pyrolysis Behavior ◽  
Direct Liquefaction ◽  
Kinetics Of

The pyrolysis tests of Shenhua coal and Shenhua direct liquefaction residue have been carried out using thermogravimetric at the differential heating rate. The kinetic parameters k and E were calculated using DAEM method. Results show DAME model can describe the pyrolysis behavior of Shenhua coal within the range of 20% to 95%, the activation energy of coal pyrolysis ranges from 53.98 to 279.38 kJ/mol, and DAME model can describe the behavior of Shenhua direct liquefaction residue within the range of 10% to 80%, the activation energy of residue pyrolysis is about 170 kJ/mol. The results of which are basically consistent with the experimental data.

Application of a detailed biomass pyrolysis kinetic scheme to hardwood and softwood torrefaction

Fuel ◽  
2016 ◽  
Vol 167 ◽  
pp. 158-167 ◽  
Author(s):  
Andrés Anca-Couce ◽  
Ingwald Obernberger
Keyword(s):  
Kinetic Scheme ◽  
Biomass Pyrolysis ◽  
Pyrolysis Kinetic

Prognostication of lignocellulosic biomass pyrolysis behavior using ANFIS model tuned by PSO algorithm

Fuel ◽  
2019 ◽  
Vol 253 ◽  
pp. 189-198 ◽  
Author(s):  
Mortaza Aghbashlo ◽  
Meisam Tabatabaei ◽  
Mohammad Hossein Nadian ◽  
Vandad Davoodnia ◽  
Salman Soltanian
Keyword(s):  
Lignocellulosic Biomass ◽  
Pso Algorithm ◽  
Biomass Pyrolysis ◽  
Anfis Model ◽  
Pyrolysis Behavior

scholarly journals Investigation of the pyrolysis characteristics and kinetics of oil-palm solid waste by using Coats–Redfern method

2019 ◽  
Vol 38 (1) ◽  
pp. 298-309
Author(s):  
Fredy Surahmanto ◽  
Harwin Saptoadi ◽  
Hary Sulistyo ◽  
Tri A Rohmat
Keyword(s):  
Activation Energy ◽  
Solid Waste ◽  
Oil Palm ◽  
Frequency Factor ◽  
Nitrogen Atmosphere ◽  
Empty Fruit Bunch ◽  
Pyrolysis Kinetics ◽  
Pyrolysis Characteristics ◽  
Kinetics Of

The pyrolysis kinetics of oil-palm solid waste was investigated by performing experiments on its individual components, including empty fruit bunch, fibre, shell, as well as the blends by using a simultaneous thermogravimetric analyser at a heating rate of 10°C/min under nitrogen atmosphere and setting up from initial temperature of 30°C to a final temperature of 550°C. The results revealed that the activation energy and frequency factor values of empty fruit bunch, fibre, and shell are 7.58–63.25 kJ/mol and 8.045E-02–4.054E + 04 s−1, 10.45–50.76 kJ/mol and 3.639E-01–5.129E + 03 s−1, 9.46–55.64 kJ/mol and 2.753E-01–9.268E + 03, respectively. Whereas, the corresponding values for empty fruit bunch–fibre, empty fruit bunch–shell, fibre–shell, empty fruit bunch–fibre–shell are 2.97–38.35 kJ/mol and 1.123E-02–1.326E + 02 s−1, 7.95–40.12 kJ/mol and 9.26E-02–2.101E + 02 s−1, 9.14–50.17 kJ/mol and 1.249E-01–2.25E + 03 s−1, 8.35–45.69 kJ/mol and 1.344E + 01–4.23E + 05 s−1, respectively. It was found that the activation energy and frequency factor values of the blends were dominantly due to the role of the components with a synergistic effect occurred during pyrolysis.

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