Abstract

SOTALIN, Daniel; MONTENEGRO, Lucía  and  CABRERA, Marcelo. Study of the Influence of the Operational Parameters on the Emissions of a Tunnel Kiln for Ceramic Materials. Rev Politéc. (Quito) [online]. 2021, vol.47, n.1, pp.35-42. ISSN 2477-8990.  https://doi.org/10.33333/rp.vol47n1.04.

In this investigation we analyzed how the operational parameters of a tunnel kiln for ceramic tile of an Ecuadorian industry influenced on the emission of gases to the atmosphere. The initial diagnosis consisted on the measurements of temperature, the oven internal pressure, oxygen concentration, and fuel consumption. Subsequently, we made a balance between mass and energy, thus we were able to determine the theorical relationship of fuel and air per gallon of diesel. We were able to identify that the air mass fluid entering the oven (5.83 kg/s) was less than the air leaving (9.89 kg/s), and also that the consumption between fuel and air was 1200ft3 of air per gallon of diesel. Considering a 20% of air excess, we regulated the inlet air that goes to the oven burners, so we can determine the optimum conditions for combustion. Under this new setting, we were able to see a 22% reduction of CO concentration and 1,5% oxygen concentration in the oven exhaust fans. Nevertheless, these percentages do not meet the country’s Ambiental normative. We concluded that the inlet air to the oven and the fuel-air relationship are the most influential on the oven emissions for ceramic tile. Additionally, that throughout the calibration of the burners we are able to reduce by 22% the CO emissions and on 1,5% the oxygen concentration without causing harm to the final product.

Keywords : Ceramic tunnel kiln; Emissions to the atmosphere; carbon monoxide; Oxygen.

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