Fuel conversion of moist bark by heat treatment with waste oil
1993
Takano, R.(Toyama-ken. Forestry and Forest Products Research Center, Imizu (Japan))
Siberian ezomatu bark had higher moisture content and its fuel value was low. In this paper, a method for calorific fuel conversion of moist bark by heat treatment with waste oil was investigated. The results obtained was as follows: 1) Bark containing from 50 to 70% water by weight were dried by heating it with waste oil for 15 to 20 minutes at about 190degC. And its drying time was from 1/3 to 1/4 compared with air dried treatment. 2) Both vegetable and animal cooking waste oil could be used. But, engine oil was unsuitable because the oil bubbled excessively with an increase in temperature. 3) Bark given to heat treatment by waste oil was impregnated from 20 to 30% with oil by weight. And its colorific value on dry base was about 5400 cal/g, which was about 700 cal/g greater than that of dried bark. 4) Bark given to heat treatment by waste oil was easy to grind compared with untreated bark.
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