Method for producing aromatic hydrocarbons by using naphtha

The invention belongs to the technical field of petroleum refining, and discloses a method for producing aromatic hydrocarbons by using naphtha. The method comprises the following steps: naphtha enters a preprocessing and refining unit to obtain reforming topped oil and a reforming feedstock; the reforming feedstock enters a catalytic reforming unit and then enters a depentanizing tower to obtain depentanized oil and pentane oil; the depentanized oil enters an aromatic hydrocarbon extracting tower as a raw material and undergoes aromatic hydrocarbon extraction to obtain mixed aromatic hydrocarbons and raffinate oil; the topped oil, the pentane oil and the raffinate oil are mixed, and the obtained oil mixture enters an aromatization unit and is separated to obtain a liquid product rich in aromatic hydrocarbons, liquefied gas, and dry gas; and the liquid product is mixed with reformatting generation oil, the obtained mixture enters the depentanizing tower and is depentanized, and the depentanized oil enters the aromatic hydrocarbon extracting tower as an extraction raw material. The method utilizing the aromatization unit to aromatize the topped oil, the pentane oil and the raffinate oil which cannot be processed through catalytic reforming improves the yield of the aromatic hydrocarbons, so the petroleum resource is fully used.