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2020
Journal Article
Titel
Valorisation of lignocellulosic biomass investigating different pyrolysis temperatures
Abstract
Presently, sugarcane bagasse (SB) and oat hulls (OH) have a distinctive potential as a renewable source of biomass, due to its global availability, which is advantageous for producing liquid and gaseous fuels by thermochemical processes. Thermo-Catalytic Reforming (TCR) is a pyrolysis based technology for generating energy vectors (char, bio-oil and syngas) from biomass wastes. This work aims to study the conversion of SB and OH into fuels, using TCR in a 2 kg/h continuous pilot-scale reactor at different pyrolysis temperatures. The pyrolysis temperatures were studied at 400, 450 and 500 °C, while the subsequent reforming temperature remained constant at 500 °C. The bio-oil contained the highest calorific value of 33.4 and 33.5 MJ/kg for SB and OH, respectively at 500 C pyrolysis temperature, which represented a notable increase compared to the raw material calorific value of SB and OH (16.4 and16.0 MJ/kg, respectively), this was the result of deoxygenation reactions occurring. Furthermore, the increment of the pyrolysis temperature improved the water content, total acid number (TAN), viscosity and density of the bio-oil. The syngas and the biochar properties did not change significantly with the increase of the pyrolysis temperature. In order to use TCR bio-oil as an engine fuel, it is necessary to carry out some upgrading treatments; or blend it with fossil fuels if it is to be used as a transportation fuel. Overall, TCR is a promising future route for the valorisation of lingo cellulosic residues to produce energy vectors.
Author(s)
Santos, Joao
University of Birmingham, School of Chemical Engineering, Edgbaston, Birmingham, B15 2TT, UK
Ouadi, Miloud
University of Birmingham, School of Chemical Engineering, Edgbaston, Birmingham, B15 2TT, UK
Jahangiri, Hessam
University of Birmingham, School of Chemical Engineering, Edgbaston, Birmingham, B15 2TT, UK