Mini-Rectangular Kiln to Produce Charcoal and Wood Vinegar

Abstract

This research aimed to evaluate the production of charcoal and wood vinegar in a mini-rectangular kiln equipped with a condenser and vertical smoke burner. The kiln had a chimney, a condenser and a vertical smoke burner. The logs were 0.90 m long and had characterized. Ten carbonization runs were conducted to evaluate the kiln’s performance, determining the gravimetric yields in charcoal, wood vinegar, and gases. The carbonization process took three days to conclude and four days to cool the charcoal. The results showed that the average yields for charcoal, wood vinegar, and gases were 34.0, 31.2, and 34.8%, respectively. The charcoal produced, despite the use of moderate-density wood, demonstrated favorable characteristics. The moisture content, ash content, volatile materials, and higher calorific values all fell within the ideal ranges. This, coupled with a good yield, confirms the technical viability of the system as an alternative for small producers.

Keywords:
Carbonization process; Kiln performance; Charcoal quality