Browsing SINTEF Open by Author "Várhegyi, Gábor"

CO2 Gasification of Chars Prepared by Fast and Slow Pyrolysis from Wood and Forest Residue. A Kinetic Study

Wang, Liang; Li, Tian; Várhegyi, Gábor; Skreiberg, Øyvind; Løvås, Terese (Journal article; Peer reviewed, 2017)

Effect of slow pyrolysis conditions on biocarbon yield and properties: Characterization of the volatiles

Babinszki, Bence; Sebestyén, Zoltán; Jakab, Emma; Kőhalmi, Luca; Bozi, Janos; Várhegyi, Gábor; Wang, Liang; Skreiberg, Øyvind; Czégény, Zsuzsanna (Peer reviewed; Journal article, 2021)

Slow pyrolysis of spruce and birch was performed at various heating programs and conditions in a horizontal quartz tube reactor heated by an electric furnace. The effects of feedstock and carbonization conditions on the ...

EFFECT OF STORAGE TIME AND CONDITIONS ON BIOMASS CHARCOAL PROPERTIES

Wang, Liang; Hu, Kathryn; Higashi, Charissa; Skreiberg, Øyvind; Myrvågnes, Viktor; Grønli, Morten; Antal, Michael Jerry; Várhegyi, Gábor (Journal article, 2015)

Empirical Kinetic Models for the CO2 Gasification of Biomass Chars. Part 1. Gasification of Wood Chars and Forest Residue Chars

Várhegyi, Gábor; Wang, Liang; Skreiberg, Øyvind (Journal article; Peer reviewed, 2021)

The gasification kinetics of charcoals and biomass chars is complicated by several factors, including chemical and physical inhomogeneities, the presence of mineral matter, and the irregular geometry of the pore structure. ...

Kinetics of the CO2 gasification of woods, torrefied woods, and wood chars. Least squares evaluations by empirical models

Várhegyi, Gábor; Wang, Liang; Skreiberg, Øyvind (Peer reviewed; Journal article, 2023)

The gasification kinetics of chars forming from biomass materials was studied by kinetic equations of type dX/dt = A f(X) exp(− E/(RT)) where X is the conversion of the sample, A is the pre-exponential factor, E is the ...