A method for preparing
petroleum naphthalene from C10 heavy
Aromatic Hydrocarbon material belongs to the preparation technical field of
petroleum naphthalene, which comprises exchanging the heat of C10 heavy
Aromatic Hydrocarbon material with low
naphthalene with the light fraction distillate at the top of a first
distillation column, leading the material into the
distillation column to be distilled, exchanging the heat and condensing the light fraction at column top, feeding condensate into a
reflux tank at column top, leading the top distillate as a first
solvent via a pipeline, leading out rich
durene solution from the first side pipeline of the first
distillation column, separating out the light fraction distillate and the rich
durene solution, leading the heavy fraction distillate at the column bottom into a second distillation column to be distilled, leading out the top distillate of the second distillation column as a second
solvent via a pipeline, separating out the light and heavy fraction distillates in the second distillation column, leading out rich naphthalene solution from a second side pipeline of the second distillation column, cooling, crystallizing the rich naphthalene solution via a
crystallization device, and separating
crystallization mother liquor via a
centrifugal separator, to obtain final product of
petroleum naphthalene. The invention has few process, simple operation and low cost, while the whole preparation has no generation of three wastes.