Autothermal Siberian Pine Nutshell Pyrolysis Maintained by Exothermic Reactions

Alexander Astafev, Ivan Shanenkov, Kanipa Ibraeva, Roman Tabakaev () and Sergei Preis
Additional contact information
Alexander Astafev: Institute of Environmental and Agricultural Biology (X-BIO), University of Tyumen, 6 Volodarskogo Street, 625003 Tyumen, Russia
Ivan Shanenkov: Institute of Environmental and Agricultural Biology (X-BIO), University of Tyumen, 6 Volodarskogo Street, 625003 Tyumen, Russia
Kanipa Ibraeva: Institute of Environmental and Agricultural Biology (X-BIO), University of Tyumen, 6 Volodarskogo Street, 625003 Tyumen, Russia
Roman Tabakaev: Institute of Environmental and Agricultural Biology (X-BIO), University of Tyumen, 6 Volodarskogo Street, 625003 Tyumen, Russia
Sergei Preis: Department of Materials and Environmental Technology, Tallinn University of Technology, 5 Ehitajate Tee, 19086 Tallinn, Estonia

Energies, 2022, vol. 15, issue 19, 1-15

Abstract: The global energy industry works towards an increased use of carbon-neutral biomass. Nutshell represents a regional bio-waste, i.e., a bio-energy resource. Pyrolysis is a common method for processing biomass into valuable energy products. The heat demand, however, limits pyrolysis applications. Yet, such demand may be addressed via exothermic pyrolysis reactions under selected operation conditions. Making the pyrolysis of Siberian pine nutshell autothermic comprised the objective of the study. The study involved analytical methods together with a pyrolysis experiment. The analytical methods included a thermogravimetric analysis combined with differential scanning calorimetry and an integrated gas analyzer. Thermophysical characterization was executed using a thermal diffusivity analyzer with the laser flash method. At 650 °C, pyrolytic heat was released in the amount of 1224.6 kJ/kg, exceeding the heat demand of 1179.5 kJ/kg. Pyrolysis at a lower temperature of 550 °C remained endothermic, although the combusted gas product provided 847.7 kJ/kg of heat, which, together with exothermic release, covered the required heat demand for the pyrolysis process.

Keywords: pyrolysis; pine nutshell; exothermic reactions; heat expense; pyrolysis gas (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: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/15/19/7118/pdf (application/pdf)
https://www.mdpi.com/1996-1073/15/19/7118/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:15:y:2022:i:19:p:7118-:d:927678

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().