Solvent fuel oil is a type of liquid fuel primarily used in industrial applications. It is a blend of various hydrocarbon solvents, often derived from petroleum refining processes. The primary purpose of solvent fuel oil is to provide an economical source of energy for heating, combustion, and as a solvent in various industrial processes. Solvent fuel oil is typically lighter and more fluid than other heavy oils, such as furnace oil or tyre pyrolysis fuel oil (tdf), and is often used when a more easily ignitable and lower-viscosity fuel is required. Key Features: Lower Viscosity: Compared to heavier oils, solvent fuel oils have lower viscosity, making them easier to pump and handle. Blended Composition: It is typically a blend of light to medium hydrocarbons with solvents that help it burn more efficiently. Higher Volatility: Solvent fuel oils tend to have higher volatility compared to heavy fuel oils, which makes them more easily ignitable, but also means they evaporate more quickly. Energy Density: While not as energy-dense as heavier oils, solvent fuel oils provide a decent calorific value, making them suitable for medium-scale industrial applications.