The influence of selected biomass additions on the co-pyrolysis with an inertinite-rich medium rank C grade South African coal
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Date
2015Author
Strydom, C.A.
Sehume, T.Z.
Bunt, J.R.
Van Dyk, J.C.
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Show full item recordAbstract
Co-pyrolysis of four biomass samples (hardwood chip, softwood chip,
pinewood chip, and sugarcane bagasse) with an inertinite-rich medium
rank C South African coal was investigated. Proximate and ultimate
analyses of the chars prepared using a heating rate of 10°C/min up to
1100°C in a nitrogen atmosphere were used to compare the properties of
the biomass and the coal chars. Similar gross calorific values (28.5–29.1
MJ/kg) for the woody biomass-coal blended chars were observed, which
were slightly higher than that of the coal char sample (26.5 MJ/kg). CO2
surface areas of the chars of the woody biomass samples (328.1–329.4
m2/g) and of the blends (238.5–271.5 m2/g) were higher than that of the
coal char sample (94.2 m2/g). Thermogravimetric (TG), differential
thermal analyses (DTG), and calculated weighted averaged TG curves
indicated that the influence of the biomass on the pyrolysis rate of the coal
is small and vice versa. The CO2-producing reactions of the coal were
slightly enhanced during co-pyrolysis
URI
http://hdl.handle.net/10394/18575http://dx.doi.org/10.17159/2411-9717/2015/v115n8a7
http://www.saimm.co.za/Journal/v115n08p707.pdf