Pyrolysis of Eucalyptus camaldulensis, denhn
1986
Thusnee Kitirattrakarn
At temperature below 250 deg. C., all specimens were not completely carbonized although the pyrolysis had been taken as long as seven hours. The remaining products were more than 67 %. The heat of combustion and fixed carbon content of the products were less than 5,500 cal/g and 35 %, respectively. The volatile matter contents of products were greater than 64 %. At temperature between 300 - 350 deg. C., all specimens were completely carbonized within 30 minutes. The average charcoal yield, heat of combustion, fixed carbon and volatile matter contents were almost constant after 30 minutes of reaction time. The charcoal yield was 39 - 47 %. The heat of combustion, fixed carbon and volatile matter contents were 6,200 - 6,420 cal/g,57 - 62 % and 37.5 - 42 %, respectively. Between 400 -600 deg. C., all specimens were completely carbonized within 15 minutes. The average charcoal yield, heat of combustion, fixed carbon and volatile matter contents were slightly changed after 30 minutes of reaction time. The charcoal yield was 24.5 - 34.5 %. The heat of combustion, fixed carbon and volatile matter contents were 6,620 - 7,480 cal/g,68 - 87 % and 11 - 31 %, respectively. The charcoal from these temperature provided these chemical properties similar to usual cooking charcoal. At 800 deg. C., the reaction temperature was too high to produce charcoal. The charcoal yield was decreased with respect to reaction time. The heat of combustion, fixed carbon as well as volatile matter contents were not better than those charcoal properties at 600 deg. C.
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This bibliographic record has been provided by Thai National AGRIS Centre, Kasetsart University
