Among the wash oil fractions, the dimethyl naphthalene fraction has the smallest polymerization performance, and it can be used as an absorbent to reduce consumption. Dimethyl naphthalene fraction has low methyl naphthalene content, but high total methyl naphthalene and dimethyl naphthalene content, and low acenaphthene, fluorene and oxyfluorene content, so it has good absorption performance for benzene hydrocarbons. In addition, the dimethyl naphthalene fraction has low naphthalene content, and it can be used as an absorbent to reduce the naphthalene content of the gas after washing the benzene tower. In summary, the extraction of valuable compounds from the wash oil also improves the quality of the wash oil as an absorbent. Therefore, it is an effective way for comprehensive utilization of the wash oil.
