Desulfurization of Tyre Pyrolysis Oil (TPO) for fuel production using different acids and H2O2 Mixtures.

Abstract The need of sustainable energy source arises with the time due to the reduction of the other energy sources like diesel, petroleum etc. Application of tyre oil in place of diesel hinders due to the high level of impurities, emissions and bad odor. This study comprises of removal of these impurities and reduction in emissions by oxidative desulfurization of TPO at laboratory scale. Different treatments are prepared of different concentrations (15, 20 and 25%) of acid and H2O2 mixtures such as acetic acid/H2O2, formic acid/H2O2), 8% H2SO4 and 20% HNO3 at varying temperature conditions. Emissions of crude TPO, desulfurized TPO and diesel measured by burning it into enclosed cylindrical iron container at small scale without mixing any other fuel. In Acetic acid treatment maximum reduction of the SOx emission occur at 45ºC. This treatment removes 99.42%, 98.71% and 91.9% of SOx, NOx and CO respectively for 1:2 with 20% conc. In formic acid treatment, removes the significant amount of SOx, NOx and CO (99.71%, 71.69% and 83.2% respectively) for 2:1 ratio with 25% conc. Viscosity of the treated samples varied significantly from 1.96cSt for nitric acid to 87.65cSt for formic acid/H2O2. Calorific values of samples are lower at the lowest emissions of SOx. The oxidative desulfurization of crude TPO is effective for the reduction of the sulfur content, hazardous gaseous and improve fuel and air quality. Cost analysis of crude TPO shows that the use of TPO in power generation is 85% more economical than the diesel and furnace oil.