Influence of Torrefaction and Pelletizing of Sawdust on the Design Parameters of a Fixed Bed Gasifier

Hao Luo, Lukasz Niedzwiecki, Amit Arora, Krzysztof Mościcki, Halina Pawlak-Kruczek, Krystian Krochmalny, Marcin Baranowski, Mayank Tiwari, Anshul Sharma, Tanuj Sharma and Zhimin Lu
Additional contact information
Hao Luo: Department of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark
Lukasz Niedzwiecki: Department of Mechanics, Machines, Devices and Energy Processes; Wrocław University of Science and Technology, 50-370 Wrocław, Poland
Amit Arora: Department of Chemical Engineering, Shaheed Bhagat Singh State Technical Campus, Ferozepur 152004, Punjab, India
Krzysztof Mościcki: Department of Mechanics, Machines, Devices and Energy Processes; Wrocław University of Science and Technology, 50-370 Wrocław, Poland
Halina Pawlak-Kruczek: Department of Mechanics, Machines, Devices and Energy Processes; Wrocław University of Science and Technology, 50-370 Wrocław, Poland
Krystian Krochmalny: Department of Mechanics, Machines, Devices and Energy Processes; Wrocław University of Science and Technology, 50-370 Wrocław, Poland
Marcin Baranowski: Department of Mechanics, Machines, Devices and Energy Processes; Wrocław University of Science and Technology, 50-370 Wrocław, Poland
Mayank Tiwari: Department of Mechanics, Machines, Devices and Energy Processes; Wrocław University of Science and Technology, 50-370 Wrocław, Poland
Anshul Sharma: Department of Mechanics, Machines, Devices and Energy Processes; Wrocław University of Science and Technology, 50-370 Wrocław, Poland
Tanuj Sharma: Department of Mechanics, Machines, Devices and Energy Processes; Wrocław University of Science and Technology, 50-370 Wrocław, Poland
Zhimin Lu: School of Electric Power, South China University of Technology, Guangzhou 510641, China

Energies, 2020, vol. 13, issue 11, 1-19

Abstract: Gasification of biomass in fixed bed gasifiers is a well-known technology, with its origins dating back to the beginning of 20th century. It is a technology with good prospects, in terms of small scale, decentralized power co-generation. However, the understanding of the process is still not fully developed. Therefore, assessment of the changes in the design of a gasifier is typically performed with extensive prototyping stage, thus introducing significant cost. This study presents experimental results of gasification of a single pellet and bed of particles of raw and torrefied wood. The procedure can be used for obtaining design parameters of a fixed bed gasifier. Results of two suits of experiments, namely pyrolysis and CO 2 gasification are presented. Moreover, results of pyrolysis of pellets are compared against a numerical model, developed for thermally thick particles. Pyrolysis time, predicted by model, was in good agreement with experimental results, despite some differences in the time when half of the initial mass was converted. Conversion times for CO 2 gasification were much longer, despite higher temperature of the process, indicating importance of the reduction reactions. Overall, the obtained results could be helpful in developing a complete model of gasification of thermally thick particles in a fixed bed.

Keywords: torrefaction; pyrolysis; gasification; fixed bed; thermally thick particle; modelling (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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