The Production of high quality wood vinegar.

Abstract

The objective of the research is to produce high quality wood vinegar from different types of tree, age, and moisture content of the raw wood, in a small scale incinerator. The experimental were carried out in four part. The first part was constructing the incinerator form the 200 liters metal tank. The second part was producing the wood vinegar for Three different types of wood, i.e., grapefruit tree, guava fruit tree, and mango tree. The third was pure wood vinegar. The final part was doing physical and chemical analysis. The quality of the produced wood vinegar was compared against the Thai industrial standard of wood vinegar no. 659/2547.
The process is as follows: 1. The oven moisture flue entrance temperature of about 70 – 75 ํ C , next the fuel The smoke has a pungent odor. 2. Collecting wood vinegar burning in the mouth for some time, temperature flue 80-85 ํ C , wood in the stove to heat it accumulated enough to keep the temperature in the oven to rise, during this gradual Reduce fuel entering the furnace Page and collecting wood vinegar. Climate by dimming control or reduce the front-burner stove page 20-30 cm3, to maintain the temperature in the oven as long as possible. Proper temperature flue collecting wood vinegar about 85 – 120 ํ C , because as the gas in the timber is ejected. 3. Done making pure wood vinegar the wood vinegar being stored in a non-metallic tank lid about 55-72 days do not be impacted, wood vinegar settling into 3 layers, upstairs is light oil, midway is wood vinegar and below is tar.
The results showed that the wood vinegar produced from this method has moisture content of 21%-45%, pH in the range of 2.4 to 3.4, and the specific gravity between 1.0 to 1.07. The physical and chemical properties of the wood vinegar from this research are complied with Thai industrial standard of wood vinegar no.659/2547.