The availability of liquid fuel obtained from co-pyrolysis of coal and waste cotton oil

One of the techniques used to obtain alternative liquid fuel is pyrolysis. In this study, co-pyrolysis process was applied to waste cotton oil and coal. Samples were generated by mixing liquid fuel obtained from co-pyrolysis and diesel fuel at certain ratios. Nitrogen (N), carbon (C), hydrogen (H) and sulfur (S) content of samples were measured by elemental analyzes. The values of density, yield point, flash point and viscosity were analyzed in the laboratory. Aniline point of the samples were found and cetane number was calculated from these values found. After measurements, the obtained samples were found to usable in diesel engine; then these samples were tested in a three-cylinder four-stroke diesel engine at a constant engine speed. As a result of experiments, it was concluded that, performance values of obtained liquid fuel and diesel fuel were similar. However, it was seen that, with the increasing rate of pyrolysis liquid in the mixture; CO and NOx emissions were increased and CO2, HC and O2 emissions were reduced. Also it was observed that fuel consumption and specific fuel consumption values were improved with addition of pyrolysis liquid. Nevertheless, liquid fuel usage and quality can be increased by further studies concerning with the enhancement in pyrolysis liquid quality and usage.