Abstract: The existing energy efficiency evaluation methods used in refineries at domestic and overseas are mainly applicable to the comparison of the overall energy consumption level between enterprises. Based on the energy-using mechanism, the energy-using analysis of the “Three-link” theory, and the process simulation technology, the energy-using parameters of the key links of the unit and system were used to evaluate the energy consumption level in the refinery, and a new energy efficiency evaluation method was also proposed. The results of evaluating the energy efficiency level of atmospheric and vacuum distillation units show that this method can guide the analysis of energy-saving potential and optimization of the energy-saving scheme in the refinery units, which can make the single unit realize better energy-saving, and assist the realization of “double carbon” goal.

Key words: refinery unit, comprehensive energy consumption, single factor energy consumption, energy efficiency evaluation