Evaluation of the use of lignite of Turkeys’ with biomass as Agricultural waste as fuel in terms of emissions

¹ Balikesir University, Engineering Faculty, Department of Mechanical Engineering, Cagis Campus, 10145 Balikesir, Turkey
² Balikesir University, Engineering Faculty, Department of Mechanical Engineering, Cagis Campus, 10145 Balikesir, Turkey

^* Corresponding author: ismail@balikesir.edu.tr

Abstract

Agricultural wastes as Biomass contains low carbon, high hydrogen, high oxygen and a lower amount of sulfur. Coals contain higher amounts of carbon, lower amounts of hydrogen, lower oxygen and higher amounts of sulfur. With the use of lignite and biomass mixture as fuel will provide less CO₂ and SO₂ emissions and a more economical mixture will be obtained. Considering these emissions, fluidized bed combustion systems are recommended in the literature for the combustion of lignite and biomass. In this study, rice husks, corn cobs, walnut shells, sunflower shells, olive cake and woodchips were used as agricultural waste. 10 different lignite extracted from Turkey were used as fuel. It has been assumed that the combustion process was carried out by taking the biomass rate of 10%, 30% and 50%. When burning of 1 kg of lignite and biomass mixture, the highest CO₂ emission occurs from 10% woodchips - 90% Kütahya - Ömerler (washed) mixture as 2.938 kg and the highest SO₂ emission obtained from 10% olive cake - 90% Kütahya Seyitömer-Ayvalı lignite mixture as 0.061 kg. The highest H₂O emission was obtained by mixing 50% woodchips - 50% Manisa-Kısrakdere lignite as 0.563 kg.