Investigating the effect of the position of the calciner burners on reducing the emission of environmental pollutants in the cement factory (Case study: Qaen city)

Despite its great impact on economic progress, the cement industry produces a variety of environmental pollutants, including NOx, carbon dioxide, and carbon monoxide, the release of which can cause serious damage to the environment. In the meantime, the biggest impact of this industry on the environment is related to its burners, and the present research was written with the aim of investigating the effect of the location of calciner burners on reducing the emission of environmental pollutants in Qaen Cement Factory. The research method in the current research is quantitative, and in order to numerically investigate the effect of two positions for calciner burners in the lower part (main position) and in the upper part on the emission of pollutants, was used Ansys Fluent 2022 software. The findings of the research show that the Qaen cement factory in the calciner section is facing the problem of incomplete combustion, which has led to the production of carbon monoxide instead of carbon dioxide. In addition to reducing temperature and increasing fuel consumption, this incomplete combustion causes the production of significant carbon monoxide, which destroys the environment. Also, the results indicate that in the upper burner mode, due to the reduction in the chance of fuel and air mixing, the combustion becomes incomplete and the emission of carbon monoxide increases, but the production of Nox decreases due to the decrease in the combustion temperature.