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Proof-of-Concept of High-Pressure Torrefaction for Improvement of Pelletized Biomass Fuel Properties and Process Cost Reduction
- Source :
- Energies; Volume 13; Issue 18; Pages: 4790, Energies, Vol 13, Iss 4790, p 4790 (2020)
- Publication Year :
- 2020
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2020.
-
Abstract
- This paper provides a comprehensive description of the new approach to biomass torrefaction under high-pressure conditions. A new type of laboratory-scale high-pressure reactor was designed and built. The aim of the study was to compare the high-pressure torrefaction with conventional near atmospheric pressure torrefaction. Specifically, we investigated the torrefaction process influence on the fuel properties of wooden-pellet for two different pressure regimes up to 15 bar. All torrefaction processes were conducted at 300 °C, at 30 min of residence time. The initial analysis of the increased pressure impact on the torrefaction parameters: mass yields, energy densification ratio, energy yield, process energy consumption, the proximate analysis, high heating value, and energy needed to grind torrefied pellets was completed. The results show that high-pressure torrefaction needed up to six percent less energy, whereas energy densification in the pellet was ~12% higher compared to conventional torrefaction. The presence of pressure during torrefaction did not have an impact on the energy required for pellet grinding (p < 0.05).
- Subjects :
- Control and Optimization
Materials science
020209 energy
Pellets
Energy Engineering and Power Technology
Biomass
02 engineering and technology
010501 environmental sciences
lcsh:Technology
01 natural sciences
pressure torrefaction
pellet
renewable energy sources
energy consumption
grinding
thermogravimetric analysis
proximate analysis
high heating value
torrefied biomass
biochar
Pellet
0202 electrical engineering, electronic engineering, information engineering
Electrical and Electronic Engineering
Engineering (miscellaneous)
0105 earth and related environmental sciences
Atmospheric pressure
lcsh:T
Renewable Energy, Sustainability and the Environment
business.industry
Energy consumption
Torrefaction
Pulp and paper industry
Renewable energy
Heat of combustion
business
Energy (miscellaneous)
Subjects
Details
- Language :
- English
- ISSN :
- 19961073
- Database :
- OpenAIRE
- Journal :
- Energies; Volume 13; Issue 18; Pages: 4790
- Accession number :
- edsair.doi.dedup.....72f9f356ea88bc33fb5edca1825619cc
- Full Text :
- https://doi.org/10.3390/en13184790