In order to reproduce combustion properties of heavy fuel oil

a multi component surrogate was proposed based on the chemical deconstruction method. The multi-component surrogate consisted of n-tetradecane

farnesane

tetralin and n-decylbenzene to characterize n-alkanes

iso-alkanes

cyclo-alkanes and aromatics in the target fuel

respectively. Besides

the optimal proportions of surrogate components were determined by the weighted Euclidean distance algorithm. Point-to-point validations of oxidation properties of the multi-component surrogate at low and intermediate temperatures were experimentally conducted in a flow reactor. The multi-component surrogate successfully reproduced the changing profiles of the concentrations of typical reactants

intermediates and products with temperature. Based on the decoupling methodology

a skeletal mechanism for the multi-component surrogate was proposed and developed. The mechanism effectively predicted the oxidation property of heavy residual fuel oil at low and intermediate temperatures. According to the sensitivity analyses based on the skeletal mechanism

elementary reactions relates to large n-alkane contributed a lot to soot formation in the combustion of heavy fuel oil. Besides

according to the results in a visual constant volume combustion chamber

the multi-component surrogate well predictes the spray and combustion process in engine-relevant conditions.