Thermal effects investigation during biomass slow pyrolysis in a fixed bed reactor

Roman Tabakaev, Alexander Astafev, Yuliya Shanenkova, Yury Dubinin, Nikolay Yazykov, Vadim Yakovlev

Research output: Contribution to journalArticle

Abstract

The desire to increase the role of renewable biomass resources in the energy sector sets the task of finding promising areas for its resource-efficient use. Pyrolytic conversion (pyrolysis) of biomass can be considered as one of such directions. The efficiency of pyrolysis depends on the possibility of its implementation in the autothermal mode. In this regard, the purpose of this work is to study the thermal conversion of biomass in the process of slow low-temperature pyrolysis in relation to its implementation in a fixed bed reactor. Physical experiment methods, differential thermal analysis and electron scanning microscopy were used in the work. As a result of the study, it was shown that in the process of straw and peat low-temperature pyrolysis (heating rate of 10 °C/min) a thermal exothermic decomposition effect was observed when the reactor was heated to 500 °C. This effect led to an increase in the rate of heating of the biomass bed. Moreover, in the case of straw pyrolysis, the temperature in the bed began to exceed the temperature of the reactor wall (up to 55–60 °C) when heated above 303 °C. The total values of the exothermic effect of straw and peat pyrolysis in the temperature range of 170–600 °C were 1,475 kJ/kg and 862 kJ/kg, respectively (based on the dry mass of the feedstock). The scanning microscopy method shows the change in the biomass structure during the pyrolytic decomposition process.

Original languageEnglish
Pages (from-to)26-33
Number of pages8
JournalBiomass and Bioenergy
Volume126
DOIs
Publication statusPublished - 1 Jul 2019

Fingerprint

pyrolysis
temperature effect
Thermal effects
Biomass
Pyrolysis
heat
biomass
Straw
straw
Peat
temperature
peat
Temperature
heating
Decomposition
energy resources
differential thermal analysis
thermal degradation
thermal analysis
thermal decomposition

Keywords

  • Biomass
  • SEM micrographs of decomposition
  • Slow pyrolysis
  • Thermal effect
  • Thermal processing

ASJC Scopus subject areas

  • Forestry
  • Renewable Energy, Sustainability and the Environment
  • Agronomy and Crop Science
  • Waste Management and Disposal

Cite this

Thermal effects investigation during biomass slow pyrolysis in a fixed bed reactor. / Tabakaev, Roman; Astafev, Alexander; Shanenkova, Yuliya; Dubinin, Yury; Yazykov, Nikolay; Yakovlev, Vadim.

In: Biomass and Bioenergy, Vol. 126, 01.07.2019, p. 26-33.

Research output: Contribution to journalArticle

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