Keywords:wood vinegar, sawdust, wood dust
The objectives of this study were to study, design, build and performance test a machine for producing wood vinegar from raw materials of sawdust and wood dust which were waste materials considered as garbage from wood processing factories that had to be disposed of or burned away. The elimination of sawdust and wood dust waste materials helped to reduce both pulmonary diseases and environmental problems. The studied, designed and built wood vinegar producing machine was made of stainless steel with the height of 750 mm and the thickness of 9 mm. It had three main components, namely, a cylindrical stainless tank for raw materials with the diameter of 200 mm, the thickness of 3 mm and the height of 400 mm; a standard oval tank lid with the thickness of 50 mm; and a stainless condensation tube with the diameter of 14 mm and the length of 550 mm. The performance test of the machine was conducted by burning sawdust and wood dust materials in the stainless tank until the temperature inside the tank reached 250 . Then the smoke and heat from the combustion were released to the condensation tube for condensation by water cooling for one hour. Performance test results showed that the ratio of wood vinegar produced increased as the quantity of raw material increased (from about 40 % by weight when 0.5 kilogram of raw material was used to about 50 % by weight when 2.5 kilogram of raw material was used). It was also found that the quantity of wood vinegar produced from sawdust was slightly higher than that produced from wood dust.
Keywords : wood vinegar, sawdust, wood dust