Physicochemical Properties of Fuel Blends Composed of Heavy Fuel Oil and Tire-Derived Pyrolytic Oils

Abstract

The paper presents physicochemical properties of pyrolysis oil (PO) blends obtained from pyrolysis of rubber and spent tires mixed with selected heavy fuel oil (HFO) and the effect of PO properties on physicochemical properties of the final heavy heating oil. On the basis of physicochemical properties determinations, one sample of PO was selected, which was characterized by the best properties from the point of view of technological application. In the next step, physicochemical properties for the selected sample of heavy heating fuel oil consisting of 25% PO and 75% HFO were determined. It was found that the most important property of tire-derived PO is the content of gasoline, i.e., light hydrocarbons with a boiling point below 180 °C, which determine the ignition temperature of the obtained fuel blends. This property determines also the amount of PO that can be added to HFO, on the order of 30 wt % and more. The lower content of light hydrocarbons, the greater the amount of PO can be used to compose HFO. A positive aspect of the use of tire derive PO for the composing of heavy heating fuel is about a threefold decrease in kinematic viscosity, lowering the flow temperature and a significant reduction in ash content. Other properties of the modified HFO remained virtually unchanged and the fuel obtained as a result of blending meets the requirements of the relevant standard.

Investigating the Compatibility of Various Components in Marine Low-Sulfur Fuel Oil by Molecular Dynamics Simulations

“…erefore, to investigate the interactions between the molecules in lowsulfur fuel oil, representative VR components, i.e., saturate, aromatic, resin, and asphaltene (SARA), were selected as model compounds [26]. In addition, typically, a low-viscosity residue or light distillate oil is added to reduce the fuel oil viscosity and improve the combustion performance [27,28]. erefore, hexadecane (C16) was used as a representative compound for the light distillate.…”

Swirling Flame Combustion of Heavy Fuel Oil: Effect of Fuel Sulfur Content

“…The SO2 gas produced during HFO combustion leads to SO3 formation on subsequent oxidation and if the exhaust temperatures are lower than the dew point of the acid formed from SO3 (sulfuric acid), cold end corrosion occurs [10]. Asphaltenes present in HFO tend to reduce the combustion efficiency and cause the emissions particulate matter (PM) which are another source of concern associated with HFO usage [11]. PM emissions are the result of incomplete fuel combustion and constitute complex organic and inorganic compounds.…”