Investigation of the combustion mechanism of a Vertical Combustor using a small experimental furnace

Abstract

Vertical Combustor was developed for the treatment of medical waste and are now recognized as being capable of treating a wide range of waste. Various measurements and analyses were carried out in a real incinerator to analyze the combustion of a Vertical Combustor, but since the characteristics of the waste were not constant and the flue gas characteristics varied significantly from one measurement to another, a small experimental furnace was built to simulate a Vertical Combustor and combustion experiments were carried out using wood pellets, which have stable characteristics, as fuel. The combustion mechanism of the Vertical Combustor was investigated. A Gold Furnace was used in the lower part of the furnace to visualize the combustion state in the layer, as the combustion emitted light that could be transmitted through the furnace to check the internal state. This experiment confirmed that the combustion characteristics of the small experimental furnace were similar to those of a real Vertical Combustor. In the future, experiments with different primary combustion air ratios and combustion experiments with fuels of different properties will be carried out to confirm the combustion mechanism and to investigate the combustion conditions that produce stable pyrolysis gases.